summaryrefslogtreecommitdiffstats
path: root/api/src
diff options
context:
space:
mode:
Diffstat (limited to 'api/src')
-rw-r--r--api/src/Makefile.am36
-rw-r--r--api/src/glfs-fops.c3252
-rw-r--r--api/src/glfs-handleops.c1278
-rw-r--r--api/src/glfs-handles.h143
-rw-r--r--api/src/glfs-internal.h200
-rw-r--r--api/src/glfs-master.c154
-rw-r--r--api/src/glfs-mem-types.h32
-rw-r--r--api/src/glfs-mgmt.c543
-rw-r--r--api/src/glfs-resolve.c969
-rw-r--r--api/src/glfs.c673
-rw-r--r--api/src/glfs.h581
11 files changed, 7861 insertions, 0 deletions
diff --git a/api/src/Makefile.am b/api/src/Makefile.am
new file mode 100644
index 000000000..7c5df3e20
--- /dev/null
+++ b/api/src/Makefile.am
@@ -0,0 +1,36 @@
+lib_LTLIBRARIES = libgfapi.la
+noinst_HEADERS = glfs-mem-types.h glfs-internal.h
+libgfapi_HEADERS = glfs.h glfs-handles.h
+libgfapidir = $(includedir)/glusterfs/api
+
+libgfapi_la_SOURCES = glfs.c glfs-mgmt.c glfs-fops.c glfs-resolve.c \
+ glfs-handleops.c
+libgfapi_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la \
+ $(top_builddir)/rpc/rpc-lib/src/libgfrpc.la \
+ $(top_builddir)/rpc/xdr/src/libgfxdr.la \
+ $(GF_LDADD)
+
+libgfapi_la_CPPFLAGS = $(GF_CPPFLAGS) -D__USE_FILE_OFFSET64 \
+ -I$(top_srcdir)/libglusterfs/src \
+ -I$(top_srcdir)/rpc/rpc-lib/src \
+ -I$(top_srcdir)/rpc/xdr/src
+
+
+xlator_LTLIBRARIES = api.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/mount
+# workaround for broken parallel install support in automake with LTLIBRARIES
+# http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7328
+install_xlatorLTLIBRARIES = install-xlatorLTLIBRARIES
+$(install_xlatorLTLIBRARIES): install-libLTLIBRARIES
+
+api_la_SOURCES = glfs-master.c
+api_la_DEPENDENCIES = libgfapi.la
+api_la_LDFLAGS = -module -avoid-version
+api_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la \
+ $(top_builddir)/rpc/rpc-lib/src/libgfrpc.la \
+ $(top_builddir)/rpc/xdr/src/libgfxdr.la \
+ $(top_builddir)/api/src/libgfapi.la
+
+AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src
+
+AM_CFLAGS = -Wall $(GF_CFLAGS)
diff --git a/api/src/glfs-fops.c b/api/src/glfs-fops.c
new file mode 100644
index 000000000..10bb7d38b
--- /dev/null
+++ b/api/src/glfs-fops.c
@@ -0,0 +1,3252 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+#include "glfs-internal.h"
+#include "glfs-mem-types.h"
+#include "syncop.h"
+#include "glfs.h"
+#include <limits.h>
+
+#ifdef NAME_MAX
+#define GF_NAME_MAX NAME_MAX
+#else
+#define GF_NAME_MAX 255
+#endif
+
+#define READDIRBUF_SIZE (sizeof(struct dirent) + GF_NAME_MAX + 1)
+
+int
+glfs_loc_link (loc_t *loc, struct iatt *iatt)
+{
+ int ret = -1;
+ inode_t *linked_inode = NULL;
+
+ if (!loc->inode) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ linked_inode = inode_link (loc->inode, loc->parent, loc->name, iatt);
+ if (linked_inode) {
+ inode_lookup (linked_inode);
+ inode_unref (linked_inode);
+ ret = 0;
+ } else {
+ ret = -1;
+ errno = ENOMEM;
+ }
+
+ return ret;
+}
+
+
+void
+glfs_iatt_to_stat (struct glfs *fs, struct iatt *iatt, struct stat *stat)
+{
+ iatt_to_stat (iatt, stat);
+ stat->st_dev = fs->dev_id;
+}
+
+
+int
+glfs_loc_unlink (loc_t *loc)
+{
+ inode_unlink (loc->inode, loc->parent, loc->name);
+
+ return 0;
+}
+
+
+struct glfs_fd *
+glfs_open (struct glfs *fs, const char *path, int flags)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd)
+ goto out;
+
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (IA_ISDIR (iatt.ia_type)) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ if (!IA_ISREG (iatt.ia_type)) {
+ ret = -1;
+ errno = EINVAL;
+ goto out;
+ }
+
+ if (glfd->fd) {
+ /* Retry. Safe to touch glfd->fd as we
+ still have not glfs_fd_bind() yet.
+ */
+ fd_unref (glfd->fd);
+ glfd->fd = NULL;
+ }
+
+ glfd->fd = fd_create (loc.inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_open (subvol, &loc, flags, glfd->fd);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ if (ret && glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ } else if (glfd) {
+ glfd->fd->flags = flags;
+ fd_bind (glfd->fd);
+ glfs_fd_bind (glfd);
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return glfd;
+}
+
+
+int
+glfs_close (struct glfs_fd *glfd)
+{
+ xlator_t *subvol = NULL;
+ int ret = -1;
+ fd_t *fd = NULL;
+ struct glfs *fs = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_flush (subvol, fd);
+out:
+ fs = glfd->fs;
+ glfs_fd_destroy (glfd);
+
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_lstat (struct glfs *fs, const char *path, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0 && stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_stat (struct glfs *fs, const char *path, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0 && stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_fstat (struct glfs_fd *glfd, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ struct iatt iatt = {0, };
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fstat (subvol, fd, &iatt);
+
+ if (ret == 0 && stat)
+ glfs_iatt_to_stat (glfd->fs, &iatt, stat);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+struct glfs_fd *
+glfs_creat (struct glfs *fs, const char *path, int flags, mode_t mode)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd)
+ goto out;
+
+ /* This must be glfs_resolve() and NOT glfs_lresolve().
+ That is because open("name", O_CREAT) where "name"
+ is a danging symlink must create the dangling
+ destinataion.
+ */
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == -1 && errno != ENOENT)
+ /* Any other type of error is fatal */
+ goto out;
+
+ if (ret == -1 && errno == ENOENT && !loc.parent)
+ /* The parent directory or an ancestor even
+ higher does not exist
+ */
+ goto out;
+
+ if (loc.inode) {
+ if (flags & O_EXCL) {
+ ret = -1;
+ errno = EEXIST;
+ goto out;
+ }
+
+ if (IA_ISDIR (iatt.ia_type)) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ if (!IA_ISREG (iatt.ia_type)) {
+ ret = -1;
+ errno = EINVAL;
+ goto out;
+ }
+ }
+
+ if (ret == -1 && errno == ENOENT) {
+ loc.inode = inode_new (loc.parent->table);
+ if (!loc.inode) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+ }
+
+ if (glfd->fd) {
+ /* Retry. Safe to touch glfd->fd as we
+ still have not glfs_fd_bind() yet.
+ */
+ fd_unref (glfd->fd);
+ glfd->fd = NULL;
+ }
+
+ glfd->fd = fd_create (loc.inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ if (ret == 0) {
+ ret = syncop_open (subvol, &loc, flags, glfd->fd);
+ } else {
+ ret = syncop_create (subvol, &loc, flags, mode, glfd->fd,
+ xattr_req, &iatt);
+ }
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_link (&loc, &iatt);
+out:
+ loc_wipe (&loc);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ if (ret && glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ } else if (glfd) {
+ glfd->fd->flags = flags;
+ fd_bind (glfd->fd);
+ glfs_fd_bind (glfd);
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return glfd;
+}
+
+
+off_t
+glfs_lseek (struct glfs_fd *glfd, off_t offset, int whence)
+{
+ struct stat sb = {0, };
+ int ret = -1;
+
+ __glfs_entry_fd (glfd);
+
+ switch (whence) {
+ case SEEK_SET:
+ glfd->offset = offset;
+ break;
+ case SEEK_CUR:
+ glfd->offset += offset;
+ break;
+ case SEEK_END:
+ ret = glfs_fstat (glfd, &sb);
+ if (ret) {
+ /* seek cannot fail :O */
+ break;
+ }
+ glfd->offset = sb.st_size + offset;
+ break;
+ }
+
+ return glfd->offset;
+}
+
+
+//////////////
+
+ssize_t
+glfs_preadv (struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
+ off_t offset, int flags)
+{
+ xlator_t *subvol = NULL;
+ ssize_t ret = -1;
+ ssize_t size = -1;
+ struct iovec *iov = NULL;
+ int cnt = 0;
+ struct iobref *iobref = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ size = iov_length (iovec, iovcnt);
+
+ ret = syncop_readv (subvol, fd, size, offset, 0, &iov, &cnt, &iobref);
+ if (ret <= 0)
+ goto out;
+
+ size = iov_copy (iovec, iovcnt, iov, cnt); /* FIXME!!! */
+
+ glfd->offset = (offset + size);
+
+ ret = size;
+out:
+ if (iov)
+ GF_FREE (iov);
+ if (iobref)
+ iobref_unref (iobref);
+
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_read (struct glfs_fd *glfd, void *buf, size_t count, int flags)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = buf;
+ iov.iov_len = count;
+
+ ret = glfs_preadv (glfd, &iov, 1, glfd->offset, flags);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_pread (struct glfs_fd *glfd, void *buf, size_t count, off_t offset,
+ int flags)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = buf;
+ iov.iov_len = count;
+
+ ret = glfs_preadv (glfd, &iov, 1, offset, flags);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_readv (struct glfs_fd *glfd, const struct iovec *iov, int count,
+ int flags)
+{
+ ssize_t ret = 0;
+
+ ret = glfs_preadv (glfd, iov, count, glfd->offset, flags);
+
+ return ret;
+}
+
+
+struct glfs_io {
+ struct glfs_fd *glfd;
+ int op;
+ off_t offset;
+ struct iovec *iov;
+ int count;
+ int flags;
+ glfs_io_cbk fn;
+ void *data;
+};
+
+
+static int
+glfs_io_async_cbk (int ret, call_frame_t *frame, void *data)
+{
+ struct glfs_io *gio = data;
+
+ gio->fn (gio->glfd, ret, gio->data);
+
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+
+ return 0;
+}
+
+
+static int
+glfs_io_async_task (void *data)
+{
+ struct glfs_io *gio = data;
+ ssize_t ret = 0;
+
+ switch (gio->op) {
+ case GF_FOP_WRITE:
+ ret = glfs_pwritev (gio->glfd, gio->iov, gio->count,
+ gio->offset, gio->flags);
+ break;
+ case GF_FOP_FTRUNCATE:
+ ret = glfs_ftruncate (gio->glfd, gio->offset);
+ break;
+ case GF_FOP_FSYNC:
+ if (gio->flags)
+ ret = glfs_fdatasync (gio->glfd);
+ else
+ ret = glfs_fsync (gio->glfd);
+ break;
+ case GF_FOP_DISCARD:
+ ret = glfs_discard (gio->glfd, gio->offset, gio->count);
+ break;
+ case GF_FOP_ZEROFILL:
+ ret = glfs_zerofill(gio->glfd, gio->offset, gio->count);
+ break;
+ }
+
+ return (int) ret;
+}
+
+
+int
+glfs_preadv_async_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, struct iovec *iovec,
+ int count, struct iatt *stbuf, struct iobref *iobref,
+ dict_t *xdata)
+{
+ struct glfs_io *gio = NULL;
+ xlator_t *subvol = NULL;
+ struct glfs *fs = NULL;
+ struct glfs_fd *glfd = NULL;
+
+
+ gio = frame->local;
+ frame->local = NULL;
+ subvol = cookie;
+ glfd = gio->glfd;
+ fs = glfd->fs;
+
+ if (op_ret <= 0)
+ goto out;
+
+ op_ret = iov_copy (gio->iov, gio->count, iovec, count);
+
+ glfd->offset = gio->offset + op_ret;
+out:
+ errno = op_errno;
+ gio->fn (gio->glfd, op_ret, gio->data);
+
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ STACK_DESTROY (frame->root);
+ glfs_subvol_done (fs, subvol);
+
+ return 0;
+}
+
+
+int
+glfs_preadv_async (struct glfs_fd *glfd, const struct iovec *iovec, int count,
+ off_t offset, int flags, glfs_io_cbk fn, void *data)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+ call_frame_t *frame = NULL;
+ xlator_t *subvol = NULL;
+ glfs_t *fs = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ fs = glfd->fs;
+
+ frame = syncop_create_frame (THIS);
+ if (!frame) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ gio->iov = iov_dup (iovec, count);
+ if (!gio->iov) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ gio->op = GF_FOP_READ;
+ gio->glfd = glfd;
+ gio->count = count;
+ gio->offset = offset;
+ gio->flags = flags;
+ gio->fn = fn;
+ gio->data = data;
+
+ frame->local = gio;
+
+ STACK_WIND_COOKIE (frame, glfs_preadv_async_cbk, subvol, subvol,
+ subvol->fops->readv, fd, iov_length (iovec, count),
+ offset, flags, NULL);
+
+out:
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ STACK_DESTROY (frame->root);
+ glfs_subvol_done (fs, subvol);
+ }
+
+ if (fd)
+ fd_unref (fd);
+
+ return ret;
+}
+
+
+int
+glfs_read_async (struct glfs_fd *glfd, void *buf, size_t count, int flags,
+ glfs_io_cbk fn, void *data)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = buf;
+ iov.iov_len = count;
+
+ ret = glfs_preadv_async (glfd, &iov, 1, glfd->offset, flags, fn, data);
+
+ return ret;
+}
+
+
+int
+glfs_pread_async (struct glfs_fd *glfd, void *buf, size_t count, off_t offset,
+ int flags, glfs_io_cbk fn, void *data)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = buf;
+ iov.iov_len = count;
+
+ ret = glfs_preadv_async (glfd, &iov, 1, offset, flags, fn, data);
+
+ return ret;
+}
+
+
+int
+glfs_readv_async (struct glfs_fd *glfd, const struct iovec *iov, int count,
+ int flags, glfs_io_cbk fn, void *data)
+{
+ ssize_t ret = 0;
+
+ ret = glfs_preadv_async (glfd, iov, count, glfd->offset, flags,
+ fn, data);
+ return ret;
+}
+
+///// writev /////
+
+ssize_t
+glfs_pwritev (struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt,
+ off_t offset, int flags)
+{
+ xlator_t *subvol = NULL;
+ int ret = -1;
+ size_t size = -1;
+ struct iobref *iobref = NULL;
+ struct iobuf *iobuf = NULL;
+ struct iovec iov = {0, };
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ size = iov_length (iovec, iovcnt);
+
+ iobuf = iobuf_get2 (subvol->ctx->iobuf_pool, size);
+ if (!iobuf) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ iobref = iobref_new ();
+ if (!iobref) {
+ iobuf_unref (iobuf);
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ }
+
+ ret = iobref_add (iobref, iobuf);
+ if (ret) {
+ iobuf_unref (iobuf);
+ iobref_unref (iobref);
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ }
+
+ iov_unload (iobuf_ptr (iobuf), iovec, iovcnt); /* FIXME!!! */
+
+ iov.iov_base = iobuf_ptr (iobuf);
+ iov.iov_len = size;
+
+ ret = syncop_writev (subvol, fd, &iov, 1, offset, iobref, flags);
+
+ iobuf_unref (iobuf);
+ iobref_unref (iobref);
+
+ if (ret <= 0)
+ goto out;
+
+ glfd->offset = (offset + size);
+
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_write (struct glfs_fd *glfd, const void *buf, size_t count, int flags)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = (void *) buf;
+ iov.iov_len = count;
+
+ ret = glfs_pwritev (glfd, &iov, 1, glfd->offset, flags);
+
+ return ret;
+}
+
+
+
+ssize_t
+glfs_writev (struct glfs_fd *glfd, const struct iovec *iov, int count,
+ int flags)
+{
+ ssize_t ret = 0;
+
+ ret = glfs_pwritev (glfd, iov, count, glfd->offset, flags);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_pwrite (struct glfs_fd *glfd, const void *buf, size_t count, off_t offset,
+ int flags)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = (void *) buf;
+ iov.iov_len = count;
+
+ ret = glfs_pwritev (glfd, &iov, 1, offset, flags);
+
+ return ret;
+}
+
+
+int
+glfs_pwritev_async (struct glfs_fd *glfd, const struct iovec *iovec, int count,
+ off_t offset, int flags, glfs_io_cbk fn, void *data)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->iov = iov_dup (iovec, count);
+ if (!gio->iov) {
+ GF_FREE (gio);
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->op = GF_FOP_WRITE;
+ gio->glfd = glfd;
+ gio->count = count;
+ gio->offset = offset;
+ gio->flags = flags;
+ gio->fn = fn;
+ gio->data = data;
+
+ ret = synctask_new (glfs_from_glfd (glfd)->ctx->env,
+ glfs_io_async_task, glfs_io_async_cbk,
+ NULL, gio);
+
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ }
+
+ return ret;
+}
+
+
+int
+glfs_write_async (struct glfs_fd *glfd, const void *buf, size_t count, int flags,
+ glfs_io_cbk fn, void *data)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = (void *) buf;
+ iov.iov_len = count;
+
+ ret = glfs_pwritev_async (glfd, &iov, 1, glfd->offset, flags, fn, data);
+
+ return ret;
+}
+
+
+int
+glfs_pwrite_async (struct glfs_fd *glfd, const void *buf, int count,
+ off_t offset, int flags, glfs_io_cbk fn, void *data)
+{
+ struct iovec iov = {0, };
+ ssize_t ret = 0;
+
+ iov.iov_base = (void *) buf;
+ iov.iov_len = count;
+
+ ret = glfs_pwritev_async (glfd, &iov, 1, offset, flags, fn, data);
+
+ return ret;
+}
+
+
+int
+glfs_writev_async (struct glfs_fd *glfd, const struct iovec *iov, int count,
+ int flags, glfs_io_cbk fn, void *data)
+{
+ ssize_t ret = 0;
+
+ ret = glfs_pwritev_async (glfd, iov, count, glfd->offset, flags,
+ fn, data);
+ return ret;
+}
+
+
+int
+glfs_fsync (struct glfs_fd *glfd)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fsync (subvol, fd, 0);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+static int
+glfs_fsync_async_common (struct glfs_fd *glfd, glfs_io_cbk fn, void *data,
+ int dataonly)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->op = GF_FOP_FSYNC;
+ gio->glfd = glfd;
+ gio->flags = dataonly;
+ gio->fn = fn;
+ gio->data = data;
+
+ ret = synctask_new (glfs_from_glfd (glfd)->ctx->env,
+ glfs_io_async_task, glfs_io_async_cbk,
+ NULL, gio);
+
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ }
+
+ return ret;
+
+}
+
+
+int
+glfs_fsync_async (struct glfs_fd *glfd, glfs_io_cbk fn, void *data)
+{
+ return glfs_fsync_async_common (glfd, fn, data, 0);
+}
+
+
+int
+glfs_fdatasync (struct glfs_fd *glfd)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fsync (subvol, fd, 1);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_fdatasync_async (struct glfs_fd *glfd, glfs_io_cbk fn, void *data)
+{
+ return glfs_fsync_async_common (glfd, fn, data, 1);
+}
+
+
+int
+glfs_ftruncate (struct glfs_fd *glfd, off_t offset)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_ftruncate (subvol, fd, offset);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_ftruncate_async (struct glfs_fd *glfd, off_t offset,
+ glfs_io_cbk fn, void *data)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->op = GF_FOP_FTRUNCATE;
+ gio->glfd = glfd;
+ gio->offset = offset;
+ gio->fn = fn;
+ gio->data = data;
+
+ ret = synctask_new (glfs_from_glfd (glfd)->ctx->env,
+ glfs_io_async_task, glfs_io_async_cbk,
+ NULL, gio);
+
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ }
+
+ return ret;
+}
+
+
+int
+glfs_access (struct glfs *fs, const char *path, int mode)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_access (subvol, &loc, mode);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_symlink (struct glfs *fs, const char *data, const char *path)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (loc.inode) {
+ errno = EEXIST;
+ ret = -1;
+ goto out;
+ }
+
+ if (ret == -1 && errno != ENOENT)
+ /* Any other type of error is fatal */
+ goto out;
+
+ if (ret == -1 && errno == ENOENT && !loc.parent)
+ /* The parent directory or an ancestor even
+ higher does not exist
+ */
+ goto out;
+
+ /* ret == -1 && errno == ENOENT */
+ loc.inode = inode_new (loc.parent->table);
+ if (!loc.inode) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_symlink (subvol, &loc, data, xattr_req, &iatt);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_link (&loc, &iatt);
+out:
+ loc_wipe (&loc);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_readlink (struct glfs *fs, const char *path, char *buf, size_t bufsiz)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+ char *linkval = NULL;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (iatt.ia_type != IA_IFLNK) {
+ ret = -1;
+ errno = EINVAL;
+ goto out;
+ }
+
+ ret = syncop_readlink (subvol, &loc, &linkval, bufsiz);
+ if (ret > 0) {
+ memcpy (buf, linkval, ret);
+ GF_FREE (linkval);
+ }
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_mknod (struct glfs *fs, const char *path, mode_t mode, dev_t dev)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (loc.inode) {
+ errno = EEXIST;
+ ret = -1;
+ goto out;
+ }
+
+ if (ret == -1 && errno != ENOENT)
+ /* Any other type of error is fatal */
+ goto out;
+
+ if (ret == -1 && errno == ENOENT && !loc.parent)
+ /* The parent directory or an ancestor even
+ higher does not exist
+ */
+ goto out;
+
+ /* ret == -1 && errno == ENOENT */
+ loc.inode = inode_new (loc.parent->table);
+ if (!loc.inode) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_mknod (subvol, &loc, mode, dev, xattr_req, &iatt);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_link (&loc, &iatt);
+out:
+ loc_wipe (&loc);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_mkdir (struct glfs *fs, const char *path, mode_t mode)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (loc.inode) {
+ errno = EEXIST;
+ ret = -1;
+ goto out;
+ }
+
+ if (ret == -1 && errno != ENOENT)
+ /* Any other type of error is fatal */
+ goto out;
+
+ if (ret == -1 && errno == ENOENT && !loc.parent)
+ /* The parent directory or an ancestor even
+ higher does not exist
+ */
+ goto out;
+
+ /* ret == -1 && errno == ENOENT */
+ loc.inode = inode_new (loc.parent->table);
+ if (!loc.inode) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_mkdir (subvol, &loc, mode, xattr_req, &iatt);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_link (&loc, &iatt);
+out:
+ loc_wipe (&loc);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_unlink (struct glfs *fs, const char *path)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (iatt.ia_type == IA_IFDIR) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ ret = syncop_unlink (subvol, &loc);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_unlink (&loc);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_rmdir (struct glfs *fs, const char *path)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (iatt.ia_type != IA_IFDIR) {
+ ret = -1;
+ errno = ENOTDIR;
+ goto out;
+ }
+
+ ret = syncop_rmdir (subvol, &loc);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret == 0)
+ ret = glfs_loc_unlink (&loc);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_rename (struct glfs *fs, const char *oldpath, const char *newpath)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t oldloc = {0, };
+ loc_t newloc = {0, };
+ struct iatt oldiatt = {0, };
+ struct iatt newiatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, oldpath, &oldloc, &oldiatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &oldloc, retry);
+
+ if (ret)
+ goto out;
+retrynew:
+ ret = glfs_lresolve (fs, subvol, newpath, &newloc, &newiatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &newloc, retrynew);
+
+ if (ret && errno != ENOENT && newloc.parent)
+ goto out;
+
+ if (newiatt.ia_type != IA_INVAL) {
+ if ((oldiatt.ia_type == IA_IFDIR) !=
+ (newiatt.ia_type == IA_IFDIR)) {
+ /* Either both old and new must be dirs,
+ * or both must be non-dirs. Else, fail.
+ */
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+ }
+
+ /* TODO: check if new or old is a prefix of the other, and fail EINVAL */
+
+ ret = syncop_rename (subvol, &oldloc, &newloc);
+
+ if (ret == -1 && errno == ESTALE) {
+ if (reval < DEFAULT_REVAL_COUNT) {
+ reval++;
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+ goto retry;
+ }
+ }
+
+ if (ret == 0)
+ inode_rename (oldloc.parent->table, oldloc.parent, oldloc.name,
+ newloc.parent, newloc.name, oldloc.inode,
+ &oldiatt);
+out:
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_link (struct glfs *fs, const char *oldpath, const char *newpath)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t oldloc = {0, };
+ loc_t newloc = {0, };
+ struct iatt oldiatt = {0, };
+ struct iatt newiatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_lresolve (fs, subvol, oldpath, &oldloc, &oldiatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &oldloc, retry);
+
+ if (ret)
+ goto out;
+retrynew:
+ ret = glfs_lresolve (fs, subvol, newpath, &newloc, &newiatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &newloc, retrynew);
+
+ if (ret == 0) {
+ ret = -1;
+ errno = EEXIST;
+ goto out;
+ }
+
+ if (oldiatt.ia_type == IA_IFDIR) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ /* Filling the inode of the hard link to be same as that of the
+ original file
+ */
+ if (newloc.inode) {
+ inode_unref (newloc.inode);
+ newloc.inode = NULL;
+ }
+ newloc.inode = inode_ref (oldloc.inode);
+
+ ret = syncop_link (subvol, &oldloc, &newloc);
+
+ if (ret == -1 && errno == ESTALE) {
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+ if (reval--)
+ goto retry;
+ }
+
+ if (ret == 0)
+ ret = glfs_loc_link (&newloc, &oldiatt);
+out:
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+struct glfs_fd *
+glfs_opendir (struct glfs *fs, const char *path)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd)
+ goto out;
+
+ INIT_LIST_HEAD (&glfd->entries);
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (!IA_ISDIR (iatt.ia_type)) {
+ ret = -1;
+ errno = ENOTDIR;
+ goto out;
+ }
+
+ if (glfd->fd) {
+ /* Retry. Safe to touch glfd->fd as we
+ still have not glfs_fd_bind() yet.
+ */
+ fd_unref (glfd->fd);
+ glfd->fd = NULL;
+ }
+
+ glfd->fd = fd_create (loc.inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_opendir (subvol, &loc, glfd->fd);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ if (ret && glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ } else {
+ fd_bind (glfd->fd);
+ glfs_fd_bind (glfd);
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return glfd;
+}
+
+
+int
+glfs_closedir (struct glfs_fd *glfd)
+{
+ __glfs_entry_fd (glfd);
+
+ gf_dirent_free (list_entry (&glfd->entries, gf_dirent_t, list));
+
+ glfs_fd_destroy (glfd);
+
+ return 0;
+}
+
+
+long
+glfs_telldir (struct glfs_fd *fd)
+{
+ return fd->offset;
+}
+
+
+void
+glfs_seekdir (struct glfs_fd *fd, long offset)
+{
+ gf_dirent_t *entry = NULL;
+ gf_dirent_t *tmp = NULL;
+
+ if (fd->offset == offset)
+ return;
+
+ fd->offset = offset;
+ fd->next = NULL;
+
+ list_for_each_entry_safe (entry, tmp, &fd->entries, list) {
+ if (entry->d_off != offset)
+ continue;
+
+ if (&tmp->list != &fd->entries) {
+ /* found! */
+ fd->next = tmp;
+ return;
+ }
+ }
+ /* could not find entry at requested offset in the cache.
+ next readdir_r() will result in glfd_entry_refresh()
+ */
+}
+
+int
+glfs_discard_async (struct glfs_fd *glfd, off_t offset, size_t len,
+ glfs_io_cbk fn, void *data)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->op = GF_FOP_DISCARD;
+ gio->glfd = glfd;
+ gio->offset = offset;
+ gio->count = len;
+ gio->fn = fn;
+ gio->data = data;
+
+ ret = synctask_new (glfs_from_glfd (glfd)->ctx->env,
+ glfs_io_async_task, glfs_io_async_cbk,
+ NULL, gio);
+
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ }
+
+ return ret;
+}
+
+int
+glfs_zerofill_async (struct glfs_fd *glfd, off_t offset, size_t len,
+ glfs_io_cbk fn, void *data)
+{
+ struct glfs_io *gio = NULL;
+ int ret = 0;
+
+ gio = GF_CALLOC (1, sizeof (*gio), glfs_mt_glfs_io_t);
+ if (!gio) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ gio->op = GF_FOP_ZEROFILL;
+ gio->glfd = glfd;
+ gio->offset = offset;
+ gio->count = len;
+ gio->fn = fn;
+ gio->data = data;
+
+ ret = synctask_new (glfs_from_glfd (glfd)->ctx->env,
+ glfs_io_async_task, glfs_io_async_cbk,
+ NULL, gio);
+
+ if (ret) {
+ GF_FREE (gio->iov);
+ GF_FREE (gio);
+ }
+
+ return ret;
+}
+
+
+void
+gf_dirent_to_dirent (gf_dirent_t *gf_dirent, struct dirent *dirent)
+{
+ dirent->d_ino = gf_dirent->d_ino;
+
+#ifdef _DIRENT_HAVE_D_OFF
+ dirent->d_off = gf_dirent->d_off;
+#endif
+
+#ifdef _DIRENT_HAVE_D_TYPE
+ dirent->d_type = gf_dirent->d_type;
+#endif
+
+#ifdef _DIRENT_HAVE_D_NAMLEN
+ dirent->d_namlen = strlen (gf_dirent->d_name);
+#endif
+
+ strncpy (dirent->d_name, gf_dirent->d_name, GF_NAME_MAX + 1);
+}
+
+
+int
+glfd_entry_refresh (struct glfs_fd *glfd, int plus)
+{
+ xlator_t *subvol = NULL;
+ gf_dirent_t entries;
+ gf_dirent_t old;
+ int ret = -1;
+ fd_t *fd = NULL;
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ if (fd->inode->ia_type != IA_IFDIR) {
+ ret = -1;
+ errno = EBADF;
+ goto out;
+ }
+
+ INIT_LIST_HEAD (&entries.list);
+ INIT_LIST_HEAD (&old.list);
+
+ if (plus)
+ ret = syncop_readdirp (subvol, fd, 131072, glfd->offset,
+ NULL, &entries);
+ else
+ ret = syncop_readdir (subvol, fd, 131072, glfd->offset,
+ &entries);
+ if (ret >= 0) {
+ if (plus)
+ gf_link_inodes_from_dirent (THIS, fd->inode, &entries);
+
+ list_splice_init (&glfd->entries, &old.list);
+ list_splice_init (&entries.list, &glfd->entries);
+
+ /* spurious errno is dangerous for glfd_entry_next() */
+ errno = 0;
+ }
+
+ if (ret > 0)
+ glfd->next = list_entry (glfd->entries.next, gf_dirent_t, list);
+
+ gf_dirent_free (&old);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+gf_dirent_t *
+glfd_entry_next (struct glfs_fd *glfd, int plus)
+{
+ gf_dirent_t *entry = NULL;
+ int ret = -1;
+
+ if (!glfd->offset || !glfd->next) {
+ ret = glfd_entry_refresh (glfd, plus);
+ if (ret < 0)
+ return NULL;
+ }
+
+ entry = glfd->next;
+ if (!entry)
+ return NULL;
+
+ if (&entry->next->list == &glfd->entries)
+ glfd->next = NULL;
+ else
+ glfd->next = entry->next;
+
+ glfd->offset = entry->d_off;
+
+ return entry;
+}
+
+
+static struct dirent *
+glfs_readdirbuf_get (struct glfs_fd *glfd)
+{
+ struct dirent *buf = NULL;
+
+ LOCK (&glfd->fd->lock);
+ {
+ buf = glfd->readdirbuf;
+ if (buf) {
+ memset (buf, 0, READDIRBUF_SIZE);
+ goto unlock;
+ }
+
+ buf = GF_CALLOC (1, READDIRBUF_SIZE, glfs_mt_readdirbuf_t);
+ if (!buf) {
+ errno = ENOMEM;
+ goto unlock;
+ }
+
+ glfd->readdirbuf = buf;
+ }
+unlock:
+ UNLOCK (&glfd->fd->lock);
+
+ return buf;
+}
+
+
+int
+glfs_readdirplus_r (struct glfs_fd *glfd, struct stat *stat, struct dirent *ext,
+ struct dirent **res)
+{
+ int ret = 0;
+ gf_dirent_t *entry = NULL;
+ struct dirent *buf = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ errno = 0;
+
+ if (ext)
+ buf = ext;
+ else
+ buf = glfs_readdirbuf_get (glfd);
+
+ if (!buf) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ entry = glfd_entry_next (glfd, !!stat);
+ if (errno)
+ ret = -1;
+
+ if (res) {
+ if (entry)
+ *res = buf;
+ else
+ *res = NULL;
+ }
+
+ if (entry) {
+ gf_dirent_to_dirent (entry, buf);
+ if (stat)
+ glfs_iatt_to_stat (glfd->fs, &entry->d_stat, stat);
+ }
+
+ return ret;
+}
+
+
+int
+glfs_readdir_r (struct glfs_fd *glfd, struct dirent *buf, struct dirent **res)
+{
+ return glfs_readdirplus_r (glfd, 0, buf, res);
+}
+
+
+struct dirent *
+glfs_readdirplus (struct glfs_fd *glfd, struct stat *stat)
+{
+ struct dirent *res = NULL;
+ int ret = -1;
+
+ ret = glfs_readdirplus_r (glfd, stat, NULL, &res);
+ if (ret)
+ return NULL;
+
+ return res;
+}
+
+
+
+struct dirent *
+glfs_readdir (struct glfs_fd *glfd)
+{
+ return glfs_readdirplus (glfd, NULL);
+}
+
+
+int
+glfs_statvfs (struct glfs *fs, const char *path, struct statvfs *buf)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_statfs (subvol, &loc, buf);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_setattr (struct glfs *fs, const char *path, struct iatt *iatt,
+ int valid, int follow)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt riatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ if (follow)
+ ret = glfs_resolve (fs, subvol, path, &loc, &riatt, reval);
+ else
+ ret = glfs_lresolve (fs, subvol, path, &loc, &riatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_setattr (subvol, &loc, iatt, valid, 0, 0);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_fsetattr (struct glfs_fd *glfd, struct iatt *iatt, int valid)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fsetattr (subvol, fd, iatt, valid, 0, 0);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_chmod (struct glfs *fs, const char *path, mode_t mode)
+{
+ int ret = -1;
+ struct iatt iatt = {0, };
+ int valid = 0;
+
+ iatt.ia_prot = ia_prot_from_st_mode (mode);
+ valid = GF_SET_ATTR_MODE;
+
+ ret = glfs_setattr (fs, path, &iatt, valid, 1);
+
+ return ret;
+}
+
+
+int
+glfs_fchmod (struct glfs_fd *glfd, mode_t mode)
+{
+ int ret = -1;
+ struct iatt iatt = {0, };
+ int valid = 0;
+
+ iatt.ia_prot = ia_prot_from_st_mode (mode);
+ valid = GF_SET_ATTR_MODE;
+
+ ret = glfs_fsetattr (glfd, &iatt, valid);
+
+ return ret;
+}
+
+
+int
+glfs_chown (struct glfs *fs, const char *path, uid_t uid, gid_t gid)
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_uid = uid;
+ iatt.ia_gid = gid;
+ valid = GF_SET_ATTR_UID|GF_SET_ATTR_GID;
+
+ ret = glfs_setattr (fs, path, &iatt, valid, 1);
+
+ return ret;
+}
+
+
+int
+glfs_lchown (struct glfs *fs, const char *path, uid_t uid, gid_t gid)
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_uid = uid;
+ iatt.ia_gid = gid;
+ valid = GF_SET_ATTR_UID|GF_SET_ATTR_GID;
+
+ ret = glfs_setattr (fs, path, &iatt, valid, 0);
+
+ return ret;
+}
+
+
+int
+glfs_fchown (struct glfs_fd *glfd, uid_t uid, gid_t gid)
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_uid = uid;
+ iatt.ia_gid = gid;
+ valid = GF_SET_ATTR_UID|GF_SET_ATTR_GID;
+
+ ret = glfs_fsetattr (glfd, &iatt, valid);
+
+ return ret;
+}
+
+
+int
+glfs_utimens (struct glfs *fs, const char *path, struct timespec times[2])
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_atime = times[0].tv_sec;
+ iatt.ia_atime_nsec = times[0].tv_nsec;
+ iatt.ia_mtime = times[1].tv_sec;
+ iatt.ia_mtime_nsec = times[1].tv_nsec;
+
+ valid = GF_SET_ATTR_ATIME|GF_SET_ATTR_MTIME;
+
+ ret = glfs_setattr (fs, path, &iatt, valid, 1);
+
+ return ret;
+}
+
+
+int
+glfs_lutimens (struct glfs *fs, const char *path, struct timespec times[2])
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_atime = times[0].tv_sec;
+ iatt.ia_atime_nsec = times[0].tv_nsec;
+ iatt.ia_mtime = times[1].tv_sec;
+ iatt.ia_mtime_nsec = times[1].tv_nsec;
+
+ valid = GF_SET_ATTR_ATIME|GF_SET_ATTR_MTIME;
+
+ ret = glfs_setattr (fs, path, &iatt, valid, 0);
+
+ return ret;
+}
+
+
+int
+glfs_futimens (struct glfs_fd *glfd, struct timespec times[2])
+{
+ int ret = -1;
+ int valid = 0;
+ struct iatt iatt = {0, };
+
+ iatt.ia_atime = times[0].tv_sec;
+ iatt.ia_atime_nsec = times[0].tv_nsec;
+ iatt.ia_mtime = times[1].tv_sec;
+ iatt.ia_mtime_nsec = times[1].tv_nsec;
+
+ valid = GF_SET_ATTR_ATIME|GF_SET_ATTR_MTIME;
+
+ ret = glfs_fsetattr (glfd, &iatt, valid);
+
+ return ret;
+}
+
+
+int
+glfs_getxattr_process (void *value, size_t size, dict_t *xattr,
+ const char *name)
+{
+ data_t *data = NULL;
+ int ret = -1;
+
+ data = dict_get (xattr, (char *)name);
+ if (!data) {
+ errno = ENODATA;
+ ret = -1;
+ goto out;
+ }
+
+ ret = data->len;
+ if (!value || !size)
+ goto out;
+
+ if (size < ret) {
+ ret = -1;
+ errno = ERANGE;
+ goto out;
+ }
+
+ memcpy (value, data->data, ret);
+out:
+ if (xattr)
+ dict_unref (xattr);
+ return ret;
+}
+
+
+ssize_t
+glfs_getxattr_common (struct glfs *fs, const char *path, const char *name,
+ void *value, size_t size, int follow)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ dict_t *xattr = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ if (follow)
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+ else
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_getxattr (subvol, &loc, &xattr, name);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = glfs_getxattr_process (value, size, xattr, name);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_getxattr (struct glfs *fs, const char *path, const char *name,
+ void *value, size_t size)
+{
+ return glfs_getxattr_common (fs, path, name, value, size, 1);
+}
+
+
+ssize_t
+glfs_lgetxattr (struct glfs *fs, const char *path, const char *name,
+ void *value, size_t size)
+{
+ return glfs_getxattr_common (fs, path, name, value, size, 0);
+}
+
+
+ssize_t
+glfs_fgetxattr (struct glfs_fd *glfd, const char *name, void *value,
+ size_t size)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ dict_t *xattr = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fgetxattr (subvol, fd, &xattr, name);
+ if (ret)
+ goto out;
+
+ ret = glfs_getxattr_process (value, size, xattr, name);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_listxattr_process (void *value, size_t size, dict_t *xattr)
+{
+ int ret = -1;
+
+ ret = dict_keys_join (NULL, 0, xattr, NULL);
+
+ if (!value || !size)
+ goto out;
+
+ if (size < ret) {
+ ret = -1;
+ errno = ERANGE;
+ goto out;
+ }
+
+ dict_keys_join (value, size, xattr, NULL);
+out:
+ if (xattr)
+ dict_unref (xattr);
+ return ret;
+}
+
+
+ssize_t
+glfs_listxattr_common (struct glfs *fs, const char *path, void *value,
+ size_t size, int follow)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ dict_t *xattr = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+retry:
+ if (follow)
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+ else
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_getxattr (subvol, &loc, &xattr, NULL);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = glfs_listxattr_process (value, size, xattr);
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+ssize_t
+glfs_listxattr (struct glfs *fs, const char *path, void *value, size_t size)
+{
+ return glfs_listxattr_common (fs, path, value, size, 1);
+}
+
+
+ssize_t
+glfs_llistxattr (struct glfs *fs, const char *path, void *value, size_t size)
+{
+ return glfs_listxattr_common (fs, path, value, size, 0);
+}
+
+
+ssize_t
+glfs_flistxattr (struct glfs_fd *glfd, void *value, size_t size)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ dict_t *xattr = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fgetxattr (subvol, fd, &xattr, NULL);
+ if (ret)
+ goto out;
+
+ ret = glfs_listxattr_process (value, size, xattr);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+dict_t *
+dict_for_key_value (const char *name, const char *value, size_t size)
+{
+ dict_t *xattr = NULL;
+ int ret = 0;
+
+ xattr = dict_new ();
+ if (!xattr)
+ return NULL;
+
+ ret = dict_set_static_bin (xattr, (char *)name, (void *)value, size);
+ if (ret) {
+ dict_destroy (xattr);
+ xattr = NULL;
+ }
+
+ return xattr;
+}
+
+
+int
+glfs_setxattr_common (struct glfs *fs, const char *path, const char *name,
+ const void *value, size_t size, int flags, int follow)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ dict_t *xattr = NULL;
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ if (follow)
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+ else
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ xattr = dict_for_key_value (name, value, size);
+ if (!xattr) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_setxattr (subvol, &loc, xattr, flags);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+out:
+ loc_wipe (&loc);
+ if (xattr)
+ dict_unref (xattr);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_setxattr (struct glfs *fs, const char *path, const char *name,
+ const void *value, size_t size, int flags)
+{
+ return glfs_setxattr_common (fs, path, name, value, size, flags, 1);
+}
+
+
+int
+glfs_lsetxattr (struct glfs *fs, const char *path, const char *name,
+ const void *value, size_t size, int flags)
+{
+ return glfs_setxattr_common (fs, path, name, value, size, flags, 0);
+}
+
+
+int
+glfs_fsetxattr (struct glfs_fd *glfd, const char *name, const void *value,
+ size_t size, int flags)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ dict_t *xattr = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ xattr = dict_for_key_value (name, value, size);
+ if (!xattr) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_fsetxattr (subvol, fd, xattr, flags);
+out:
+ if (xattr)
+ dict_unref (xattr);
+
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_removexattr_common (struct glfs *fs, const char *path, const char *name,
+ int follow)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ if (follow)
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+ else
+ ret = glfs_lresolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ ret = syncop_removexattr (subvol, &loc, name);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_removexattr (struct glfs *fs, const char *path, const char *name)
+{
+ return glfs_removexattr_common (fs, path, name, 1);
+}
+
+
+int
+glfs_lremovexattr (struct glfs *fs, const char *path, const char *name)
+{
+ return glfs_removexattr_common (fs, path, name, 0);
+}
+
+
+int
+glfs_fremovexattr (struct glfs_fd *glfd, const char *name)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fremovexattr (subvol, fd, name);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_fallocate (struct glfs_fd *glfd, int keep_size, off_t offset, size_t len)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_fallocate (subvol, fd, keep_size, offset, len);
+out:
+ if (fd)
+ fd_unref(fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_discard (struct glfs_fd *glfd, off_t offset, size_t len)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_discard (subvol, fd, offset, len);
+out:
+ if (fd)
+ fd_unref(fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_zerofill (struct glfs_fd *glfd, off_t offset, size_t len)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ errno = EBADFD;
+ goto out;
+ }
+
+ ret = syncop_zerofill (subvol, fd, offset, len);
+out:
+ if (fd)
+ fd_unref(fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_chdir (struct glfs *fs, const char *path)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (!IA_ISDIR (iatt.ia_type)) {
+ ret = -1;
+ errno = ENOTDIR;
+ goto out;
+ }
+
+ glfs_cwd_set (fs, loc.inode);
+
+out:
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+
+int
+glfs_fchdir (struct glfs_fd *glfd)
+{
+ int ret = -1;
+ inode_t *inode = NULL;
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ inode = fd->inode;
+
+ if (!IA_ISDIR (inode->ia_type)) {
+ ret = -1;
+ errno = ENOTDIR;
+ goto out;
+ }
+
+ glfs_cwd_set (glfd->fs, inode);
+ ret = 0;
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+char *
+glfs_realpath (struct glfs *fs, const char *path, char *resolved_path)
+{
+ int ret = -1;
+ char *retpath = NULL;
+ char *allocpath = NULL;
+ xlator_t *subvol = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int reval = 0;
+
+ __glfs_entry_fs (fs);
+
+ if (resolved_path)
+ retpath = resolved_path;
+ else
+ retpath = allocpath = malloc (PATH_MAX + 1);
+
+ if (!retpath) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+retry:
+ ret = glfs_resolve (fs, subvol, path, &loc, &iatt, reval);
+
+ ESTALE_RETRY (ret, errno, reval, &loc, retry);
+
+ if (ret)
+ goto out;
+
+ if (loc.path) {
+ strncpy (retpath, loc.path, PATH_MAX);
+ retpath[PATH_MAX] = 0;
+ }
+
+out:
+ loc_wipe (&loc);
+
+ if (ret == -1) {
+ if (allocpath)
+ free (allocpath);
+ retpath = NULL;
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return retpath;
+}
+
+
+char *
+glfs_getcwd (struct glfs *fs, char *buf, size_t n)
+{
+ int ret = -1;
+ inode_t *inode = NULL;
+ char *path = NULL;
+
+ __glfs_entry_fs (fs);
+
+ if (!buf || n < 2) {
+ ret = -1;
+ errno = EINVAL;
+ goto out;
+ }
+
+ inode = glfs_cwd_get (fs);
+
+ if (!inode) {
+ strncpy (buf, "/", n);
+ ret = 0;
+ goto out;
+ }
+
+ ret = inode_path (inode, 0, &path);
+ if (n <= ret) {
+ ret = -1;
+ errno = ERANGE;
+ goto out;
+ }
+
+ strncpy (buf, path, n);
+ ret = 0;
+out:
+ GF_FREE (path);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (ret < 0)
+ return NULL;
+
+ return buf;
+}
+
+
+static void
+gf_flock_to_flock (struct gf_flock *gf_flock, struct flock *flock)
+{
+ flock->l_type = gf_flock->l_type;
+ flock->l_whence = gf_flock->l_whence;
+ flock->l_start = gf_flock->l_start;
+ flock->l_len = gf_flock->l_len;
+ flock->l_pid = gf_flock->l_pid;
+}
+
+
+static void
+gf_flock_from_flock (struct gf_flock *gf_flock, struct flock *flock)
+{
+ gf_flock->l_type = flock->l_type;
+ gf_flock->l_whence = flock->l_whence;
+ gf_flock->l_start = flock->l_start;
+ gf_flock->l_len = flock->l_len;
+ gf_flock->l_pid = flock->l_pid;
+}
+
+
+int
+glfs_posix_lock (struct glfs_fd *glfd, int cmd, struct flock *flock)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ struct gf_flock gf_flock = {0, };
+ struct gf_flock saved_flock = {0, };
+ fd_t *fd = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ subvol = glfs_active_subvol (glfd->fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (glfd->fs, subvol, glfd);
+ if (!fd) {
+ ret = -1;
+ errno = EBADFD;
+ goto out;
+ }
+
+ gf_flock_from_flock (&gf_flock, flock);
+ gf_flock_from_flock (&saved_flock, flock);
+ ret = syncop_lk (subvol, fd, cmd, &gf_flock);
+ gf_flock_to_flock (&gf_flock, flock);
+
+ if (ret == 0 && (cmd == F_SETLK || cmd == F_SETLKW))
+ fd_lk_insert_and_merge (fd, cmd, &saved_flock);
+out:
+ if (fd)
+ fd_unref (fd);
+
+ glfs_subvol_done (glfd->fs, subvol);
+
+ return ret;
+}
+
+
+struct glfs_fd *
+glfs_dup (struct glfs_fd *glfd)
+{
+ xlator_t *subvol = NULL;
+ fd_t *fd = NULL;
+ glfs_fd_t *dupfd = NULL;
+ struct glfs *fs = NULL;
+
+ __glfs_entry_fd (glfd);
+
+ fs = glfd->fs;
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ errno = EIO;
+ goto out;
+ }
+
+ fd = glfs_resolve_fd (fs, subvol, glfd);
+ if (!fd) {
+ errno = EBADFD;
+ goto out;
+ }
+
+ dupfd = glfs_fd_new (fs);
+ if (!dupfd) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ dupfd->fd = fd_ref (fd);
+out:
+ if (fd)
+ fd_unref (fd);
+ if (dupfd)
+ glfs_fd_bind (dupfd);
+
+ glfs_subvol_done (fs, subvol);
+
+ return dupfd;
+}
diff --git a/api/src/glfs-handleops.c b/api/src/glfs-handleops.c
new file mode 100644
index 000000000..9c707a619
--- /dev/null
+++ b/api/src/glfs-handleops.c
@@ -0,0 +1,1278 @@
+/*
+ * Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ * This file is part of GlusterFS.
+ *
+ * This file is licensed to you under your choice of the GNU Lesser
+ * General Public License, version 3 or any later version (LGPLv3 or
+ * later), or the GNU General Public License, version 2 (GPLv2), in all
+ * cases as published by the Free Software Foundation.
+ */
+
+
+#include "glfs-internal.h"
+#include "glfs-mem-types.h"
+#include "syncop.h"
+#include "glfs.h"
+#include "glfs-handles.h"
+
+static void
+glfs_iatt_from_stat (struct stat *stat, int valid, struct iatt *iatt,
+ int *glvalid)
+{
+ /* validate in args */
+ if ((stat == NULL) || (iatt == NULL) || (glvalid == NULL)) {
+ errno = EINVAL;
+ return;
+ }
+
+ *glvalid = 0;
+
+ if (valid & GFAPI_SET_ATTR_MODE) {
+ iatt->ia_prot = ia_prot_from_st_mode (stat->st_mode);
+ *glvalid |= GF_SET_ATTR_MODE;
+ }
+
+ if (valid & GFAPI_SET_ATTR_UID) {
+ iatt->ia_uid = stat->st_uid;
+ *glvalid |= GF_SET_ATTR_UID;
+ }
+
+ if (valid & GFAPI_SET_ATTR_GID) {
+ iatt->ia_gid = stat->st_gid;
+ *glvalid |= GF_SET_ATTR_GID;
+ }
+
+ if (valid & GFAPI_SET_ATTR_ATIME) {
+ iatt->ia_atime = stat->st_atime;
+ iatt->ia_atime_nsec = ST_ATIM_NSEC (stat);
+ *glvalid |= GF_SET_ATTR_ATIME;
+ }
+
+ if (valid & GFAPI_SET_ATTR_MTIME) {
+ iatt->ia_mtime = stat->st_mtime;
+ iatt->ia_mtime_nsec = ST_MTIM_NSEC (stat);
+ *glvalid |= GF_SET_ATTR_MTIME;
+ }
+
+ return;
+}
+
+struct glfs_object *
+glfs_h_lookupat (struct glfs *fs, struct glfs_object *parent,
+ const char *path, struct stat *stat)
+{
+ int ret = 0;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ struct iatt iatt = {0, };
+ struct glfs_object *object = NULL;
+ loc_t loc = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (path == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ if (parent) {
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+ }
+
+ /* fop/op */
+ ret = glfs_resolve_at (fs, subvol, inode, path, &loc, &iatt,
+ 0 /*TODO: links? */, 0);
+
+ /* populate out args */
+ if (!ret) {
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ ret = glfs_create_object (&loc, &object);
+ }
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+int
+glfs_h_stat (struct glfs *fs, struct glfs_object *object, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ /* populate loc */
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_stat (subvol, &loc, &iatt);
+
+ /* populate out args */
+ if (!ret && stat) {
+ glfs_iatt_to_stat (fs, &iatt, stat);
+ }
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_h_getattrs (struct glfs *fs, struct glfs_object *object, struct stat *stat)
+{
+ int ret = 0;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ struct iatt iatt = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ /* fop/op */
+ ret = glfs_resolve_base (fs, subvol, inode, &iatt);
+
+ /* populate out args */
+ if (!ret && stat) {
+ glfs_iatt_to_stat (fs, &iatt, stat);
+ }
+
+out:
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_h_setattrs (struct glfs *fs, struct glfs_object *object, struct stat *stat,
+ int valid)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ int glvalid = 0;
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL) || (stat == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ /* map valid masks from in args */
+ glfs_iatt_from_stat (stat, valid, &iatt, &glvalid);
+
+ /* populate loc */
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_setattr (subvol, &loc, &iatt, glvalid, 0, 0);
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+struct glfs_fd *
+glfs_h_open (struct glfs *fs, struct glfs_object *object, int flags)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ /* check types to open */
+ if (IA_ISDIR (inode->ia_type)) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ if (!IA_ISREG (inode->ia_type)) {
+ ret = -1;
+ errno = EINVAL;
+ goto out;
+ }
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ glfd->fd = fd_create (inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ /* populate loc */
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_open (subvol, &loc, flags, glfd->fd);
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (ret && glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ } else {
+ glfd->fd->flags = flags;
+ fd_bind (glfd->fd);
+ glfs_fd_bind (glfd);
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return glfd;
+}
+
+struct glfs_object *
+glfs_h_creat (struct glfs *fs, struct glfs_object *parent, const char *path,
+ int flags, mode_t mode, struct stat *stat)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ struct glfs_object *object = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (parent == NULL) || (path == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_PINODE (inode, loc, ret, errno, out, path);
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd)
+ goto out;
+
+ glfd->fd = fd_create (loc.inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ /* fop/op */
+ ret = syncop_create (subvol, &loc, flags, mode, glfd->fd,
+ xattr_req, &iatt);
+
+ /* populate out args */
+ if (ret == 0) {
+ /* TODO: If the inode existed in the cache (say file already
+ exists), then the glfs_loc_link will not update the
+ loc.inode, as a result we will have a 0000 GFID that we
+ would copy out to the object, this needs to be fixed.
+ */
+ ret = glfs_loc_link (&loc, &iatt);
+ if (ret != 0) {
+ goto out;
+ }
+
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ ret = glfs_create_object (&loc, &object);
+ }
+
+out:
+ if (ret && object != NULL) {
+ glfs_h_close (object);
+ object = NULL;
+ }
+
+ loc_wipe(&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ if (glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+struct glfs_object *
+glfs_h_mkdir (struct glfs *fs, struct glfs_object *parent, const char *path,
+ mode_t mode, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ struct glfs_object *object = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (parent == NULL) || (path == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_PINODE (inode, loc, ret, errno, out, path);
+
+ /* fop/op */
+ ret = syncop_mkdir (subvol, &loc, mode, xattr_req, &iatt);
+
+ /* populate out args */
+ if ( ret == 0 ) {
+ ret = glfs_loc_link (&loc, &iatt);
+ if (ret != 0) {
+ goto out;
+ }
+
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ ret = glfs_create_object (&loc, &object);
+ }
+
+out:
+ if (ret && object != NULL) {
+ glfs_h_close (object);
+ object = NULL;
+ }
+
+ loc_wipe(&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+struct glfs_object *
+glfs_h_mknod (struct glfs *fs, struct glfs_object *parent, const char *path,
+ mode_t mode, dev_t dev, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ struct glfs_object *object = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (parent == NULL) || (path == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_PINODE (inode, loc, ret, errno, out, path);
+
+ /* fop/op */
+ ret = syncop_mknod (subvol, &loc, mode, dev, xattr_req, &iatt);
+
+ /* populate out args */
+ if (ret == 0) {
+ ret = glfs_loc_link (&loc, &iatt);
+ if (ret != 0) {
+ goto out;
+ }
+
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ ret = glfs_create_object (&loc, &object);
+ }
+out:
+ if (ret && object != NULL) {
+ glfs_h_close (object);
+ object = NULL;
+ }
+
+ loc_wipe(&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+int
+glfs_h_unlink (struct glfs *fs, struct glfs_object *parent, const char *path)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (parent == NULL) || (path == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if ( !subvol ) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ ret = glfs_resolve_at (fs, subvol, inode, path, &loc, NULL, 0 , 0);
+ if (ret != 0) {
+ goto out;
+ }
+
+ if (!IA_ISDIR(loc.inode->ia_type)) {
+ ret = syncop_unlink (subvol, &loc);
+ if (ret != 0) {
+ goto out;
+ }
+ } else {
+ ret = syncop_rmdir (subvol, &loc);
+ if (ret != 0) {
+ goto out;
+ }
+ }
+
+ if (ret == 0)
+ ret = glfs_loc_unlink (&loc);
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+struct glfs_fd *
+glfs_h_opendir (struct glfs *fs, struct glfs_object *object)
+{
+ int ret = -1;
+ struct glfs_fd *glfd = NULL;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ if (!IA_ISDIR (inode->ia_type)) {
+ ret = -1;
+ errno = ENOTDIR;
+ goto out;
+ }
+
+ glfd = glfs_fd_new (fs);
+ if (!glfd)
+ goto out;
+
+ INIT_LIST_HEAD (&glfd->entries);
+
+ glfd->fd = fd_create (inode, getpid());
+ if (!glfd->fd) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_opendir (subvol, &loc, glfd->fd);
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (ret && glfd) {
+ glfs_fd_destroy (glfd);
+ glfd = NULL;
+ } else {
+ fd_bind (glfd->fd);
+ glfs_fd_bind (glfd);
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ return glfd;
+}
+
+ssize_t
+glfs_h_extract_handle (struct glfs_object *object, unsigned char *handle,
+ int len)
+{
+ ssize_t ret = -1;
+
+ /* validate in args */
+ if (object == NULL) {
+ errno = EINVAL;
+ goto out;
+ }
+
+ if (!handle || !len) {
+ ret = GFAPI_HANDLE_LENGTH;
+ goto out;
+ }
+
+ if (len < GFAPI_HANDLE_LENGTH)
+ {
+ errno = ERANGE;
+ goto out;
+ }
+
+ memcpy (handle, object->gfid, GFAPI_HANDLE_LENGTH);
+
+ ret = GFAPI_HANDLE_LENGTH;
+
+out:
+ return ret;
+}
+
+struct glfs_object *
+glfs_h_create_from_handle (struct glfs *fs, unsigned char *handle, int len,
+ struct stat *stat)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+ struct iatt iatt = {0, };
+ inode_t *newinode = NULL;
+ xlator_t *subvol = NULL;
+ struct glfs_object *object = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (handle == NULL) || (len != GFAPI_HANDLE_LENGTH)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ errno = EIO;
+ goto out;
+ }
+
+ memcpy (loc.gfid, handle, GFAPI_HANDLE_LENGTH);
+
+ newinode = inode_find (subvol->itable, loc.gfid);
+ if (newinode)
+ loc.inode = newinode;
+ else {
+ loc.inode = inode_new (subvol->itable);
+ if (!loc.inode) {
+ errno = ENOMEM;
+ goto out;
+ }
+ }
+
+ ret = syncop_lookup (subvol, &loc, 0, &iatt, 0, 0);
+ if (ret) {
+ gf_log (subvol->name, GF_LOG_WARNING,
+ "inode refresh of %s failed: %s",
+ uuid_utoa (loc.gfid), strerror (errno));
+ goto out;
+ }
+
+ newinode = inode_link (loc.inode, 0, 0, &iatt);
+ if (newinode)
+ inode_lookup (newinode);
+ else {
+ gf_log (subvol->name, GF_LOG_WARNING,
+ "inode linking of %s failed: %s",
+ uuid_utoa (loc.gfid), strerror (errno));
+ errno = EINVAL;
+ goto out;
+ }
+
+ /* populate stat */
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ object = GF_CALLOC (1, sizeof(struct glfs_object),
+ glfs_mt_glfs_object_t);
+ if (object == NULL) {
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ }
+
+ /* populate the return object */
+ object->inode = newinode;
+ uuid_copy (object->gfid, object->inode->gfid);
+
+out:
+ /* TODO: Check where the inode ref is being held? */
+ loc_wipe (&loc);
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+int
+glfs_h_close (struct glfs_object *object)
+{
+ /* Release the held reference */
+ inode_unref (object->inode);
+ GF_FREE (object);
+
+ return 0;
+}
+
+int
+glfs_h_truncate (struct glfs *fs, struct glfs_object *object, off_t offset)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_truncate (subvol, &loc, (off_t)offset);
+
+ /* populate out args */
+ if (ret == 0)
+ ret = glfs_loc_unlink (&loc);
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+struct glfs_object *
+glfs_h_symlink (struct glfs *fs, struct glfs_object *parent, const char *name,
+ const char *data, struct stat *stat)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ loc_t loc = {0, };
+ struct iatt iatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+ struct glfs_object *object = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (parent == NULL) || (name == NULL) ||
+ (data == NULL)) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, parent);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_PINODE (inode, loc, ret, errno, out, name);
+
+ /* fop/op */
+ ret = syncop_symlink (subvol, &loc, data, xattr_req, &iatt);
+
+ /* populate out args */
+ if (ret == 0) {
+ /* TODO: If the inode existed in the cache (say file already
+ * exists), then the glfs_loc_link will not update the
+ * loc.inode, as a result we will have a 0000 GFID that we
+ * would copy out to the object, this needs to be fixed.
+ */
+ ret = glfs_loc_link (&loc, &iatt);
+ if (ret != 0) {
+ goto out;
+ }
+
+ if (stat)
+ glfs_iatt_to_stat (fs, &iatt, stat);
+
+ ret = glfs_create_object (&loc, &object);
+ }
+
+out:
+ if (ret && object != NULL) {
+ glfs_h_close (object);
+ object = NULL;
+ }
+
+ loc_wipe(&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ glfs_subvol_done (fs, subvol);
+
+ return object;
+}
+
+int
+glfs_h_readlink (struct glfs *fs, struct glfs_object *object, char *buf,
+ size_t bufsiz)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ char *linkval = NULL;
+
+ /* validate in args */
+ if ((fs == NULL) || (object == NULL) || (buf == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, object);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_INODE (inode, loc, out);
+
+ /* fop/op */
+ ret = syncop_readlink (subvol, &loc, &linkval, bufsiz);
+
+ /* populate out args */
+ if (ret > 0)
+ memcpy (buf, linkval, ret);
+
+out:
+ loc_wipe (&loc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (linkval)
+ GF_FREE (linkval);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_h_link (struct glfs *fs, struct glfs_object *linksrc,
+ struct glfs_object *parent, const char *name)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *inode = NULL;
+ inode_t *pinode = NULL;
+ loc_t oldloc = {0, };
+ loc_t newloc = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (linksrc == NULL) || (parent == NULL) ||
+ (name == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if (!subvol) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ inode = glfs_resolve_inode (fs, subvol, linksrc);
+ if (!inode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ if (inode->ia_type == IA_IFDIR) {
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+
+ GLFS_LOC_FILL_INODE (inode, oldloc, out);
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ pinode = glfs_resolve_inode (fs, subvol, parent);
+ if (!pinode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ /* setup newloc based on parent */
+ newloc.parent = inode_ref (pinode);
+ newloc.name = name;
+ ret = glfs_loc_touchup (&newloc);
+ if (ret != 0) {
+ errno = EINVAL;
+ goto out;
+ }
+
+ /* Filling the inode of the hard link to be same as that of the
+ * original file
+ */
+ newloc.inode = inode_ref (inode);
+
+ /* fop/op */
+ ret = syncop_link (subvol, &oldloc, &newloc);
+
+ if (ret == 0)
+ /* TODO: No iatt to pass as there has been no lookup */
+ ret = glfs_loc_link (&newloc, NULL);
+out:
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+
+ if (inode)
+ inode_unref (inode);
+
+ if (pinode)
+ inode_unref (pinode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
+
+int
+glfs_h_rename (struct glfs *fs, struct glfs_object *olddir, const char *oldname,
+ struct glfs_object *newdir, const char *newname)
+{
+ int ret = -1;
+ xlator_t *subvol = NULL;
+ inode_t *oldpinode = NULL;
+ inode_t *newpinode = NULL;
+ loc_t oldloc = {0, };
+ loc_t newloc = {0, };
+ struct iatt oldiatt = {0, };
+ struct iatt newiatt = {0, };
+
+ /* validate in args */
+ if ((fs == NULL) || (olddir == NULL) || (oldname == NULL) ||
+ (newdir == NULL) || (newname == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ __glfs_entry_fs (fs);
+
+ /* get the active volume */
+ subvol = glfs_active_subvol (fs);
+ if ( !subvol ) {
+ ret = -1;
+ errno = EIO;
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ oldpinode = glfs_resolve_inode (fs, subvol, olddir);
+ if (!oldpinode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ ret = glfs_resolve_at (fs, subvol, oldpinode, oldname, &oldloc,
+ &oldiatt, 0 , 0);
+ if (ret != 0) {
+ goto out;
+ }
+
+ /* get/refresh the in arg objects inode in correlation to the xlator */
+ newpinode = glfs_resolve_inode (fs, subvol, newdir);
+ if (!newpinode) {
+ errno = ESTALE;
+ goto out;
+ }
+
+ ret = glfs_resolve_at (fs, subvol, newpinode, newname, &newloc,
+ &newiatt, 0, 0);
+
+ if (ret && errno != ENOENT && newloc.parent)
+ goto out;
+
+ if (newiatt.ia_type != IA_INVAL) {
+ if ((oldiatt.ia_type == IA_IFDIR) !=
+ (newiatt.ia_type == IA_IFDIR)) {
+ /* Either both old and new must be dirs,
+ * or both must be non-dirs. Else, fail.
+ */
+ ret = -1;
+ errno = EISDIR;
+ goto out;
+ }
+ }
+
+ /* TODO: check if new or old is a prefix of the other, and fail EINVAL */
+
+ ret = syncop_rename (subvol, &oldloc, &newloc);
+
+ if (ret == 0)
+ inode_rename (oldloc.parent->table, oldloc.parent, oldloc.name,
+ newloc.parent, newloc.name, oldloc.inode,
+ &oldiatt);
+
+out:
+ loc_wipe (&oldloc);
+ loc_wipe (&newloc);
+
+ if (oldpinode)
+ inode_unref (oldpinode);
+
+ if (newpinode)
+ inode_unref (newpinode);
+
+ glfs_subvol_done (fs, subvol);
+
+ return ret;
+}
diff --git a/api/src/glfs-handles.h b/api/src/glfs-handles.h
new file mode 100644
index 000000000..437f2cbc8
--- /dev/null
+++ b/api/src/glfs-handles.h
@@ -0,0 +1,143 @@
+/*
+ Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _GLFS_HANDLES_H
+#define _GLFS_HANDLES_H
+
+#include "glfs.h"
+
+/* GLFS OBJECT BASED OPERATIONS
+ *
+ * The following APIs are introduced to provide an API framework that can work
+ * with gluster objects (files and directories), instead of absolute paths.
+ *
+ * The following API set can be related to the POSIX *at interfaces (like
+ * openat (2)). The intention of these APIs is to be able to operate based
+ * on parent object and looking up or creating child objects within, OR to be
+ * used on the actual object thus looked up or created, and retrieve information
+ * regarding the same.
+ *
+ * The APIs also provide for generating an opaque invariant handle to the
+ * object, that can later be used to lookup the object, instead of the regular
+ * glfs_h_* variants. The APIs that provide this behaviour are,
+ * glfs_h_extract_handle and glfs_h_create_from_handle.
+ *
+ * The object handles can be transitioned to fd based operations as supported
+ * by glfs.h calls, using the glfs_h_open call. This provides a way to move
+ * from objects to fd's akin to moving from path to fd for required operations.
+ *
+ * NOTE: The opaque invariant handle is the GFID of the object in reality, but
+ * maintained as an opaque data value, for potential internal changes to the
+ * same without impacting the caller.
+ *
+ * NOTE: Currently looking up an object can create multiple object handles to
+ * the same, i.e distinct glfs_object *. Hence each such looked up or received
+ * handle from other calls, would need to be closed. In the future, for a given
+ * object these pointers would be the same, and an ease of use API to forget all
+ * instances of this bject would be provided (instead of a per lookup close).
+ * This should not change the APIs in their current form.
+ *
+ */
+
+/* Values for valid falgs to be used when using XXXsetattr, to set multiple
+ attribute values passed via the related stat structure.
+ */
+#define GFAPI_SET_ATTR_MODE 0x1
+#define GFAPI_SET_ATTR_UID 0x2
+#define GFAPI_SET_ATTR_GID 0x4
+#define GFAPI_SET_ATTR_SIZE 0x8
+#define GFAPI_SET_ATTR_ATIME 0x10
+#define GFAPI_SET_ATTR_MTIME 0x20
+
+/* Handle length for object handles returned from glfs_h_extract_handle or
+ * glfs_h_create_from_handle */
+#define GFAPI_HANDLE_LENGTH 16
+
+__BEGIN_DECLS
+
+/*
+ * Notes:
+ *
+ * The file object handle. One per looked up, created file/directory
+ *
+ * This had been introduced to facilitate gfid/inode based gfapi
+ * - a requirement introduced by nfs-ganesha
+ */
+struct glfs_object;
+typedef struct glfs_object glfs_object_t;
+
+/* Handle based operations */
+/* Operations that generate handles */
+struct glfs_object *glfs_h_lookupat (struct glfs *fs,
+ struct glfs_object *parent,
+ const char *path, struct stat *stat);
+
+struct glfs_object *glfs_h_creat (struct glfs *fs, struct glfs_object *parent,
+ const char *path, int flags, mode_t mode,
+ struct stat *sb);
+
+struct glfs_object *glfs_h_mkdir (struct glfs *fs, struct glfs_object *parent,
+ const char *path, mode_t flags,
+ struct stat *sb);
+
+struct glfs_object *glfs_h_mknod (struct glfs *fs, struct glfs_object *parent,
+ const char *path, mode_t mode, dev_t dev,
+ struct stat *sb);
+
+struct glfs_object *glfs_h_symlink (struct glfs *fs, struct glfs_object *parent,
+ const char *name, const char *data,
+ struct stat *stat);
+
+/* Operations on the actual objects */
+int glfs_h_unlink (struct glfs *fs, struct glfs_object *parent,
+ const char *path);
+
+int glfs_h_close (struct glfs_object *object);
+
+int glfs_caller_specific_init (void *uid_caller_key, void *gid_caller_key,
+ void *future);
+
+int glfs_h_truncate (struct glfs *fs, struct glfs_object *object, off_t offset);
+
+int glfs_h_stat(struct glfs *fs, struct glfs_object *object, struct stat *stat);
+
+int glfs_h_getattrs (struct glfs *fs, struct glfs_object *object,
+ struct stat *stat);
+
+int glfs_h_setattrs (struct glfs *fs, struct glfs_object *object,
+ struct stat *sb, int valid);
+
+int glfs_h_readlink (struct glfs *fs, struct glfs_object *object, char *buf,
+ size_t bufsiz);
+
+int glfs_h_link (struct glfs *fs, struct glfs_object *linktgt,
+ struct glfs_object *parent, const char *name);
+
+int glfs_h_rename (struct glfs *fs, struct glfs_object *olddir,
+ const char *oldname, struct glfs_object *newdir,
+ const char *newname);
+
+/* Operations enabling opaque invariant handle to object transitions */
+ssize_t glfs_h_extract_handle (struct glfs_object *object,
+ unsigned char *handle, int len);
+
+struct glfs_object *glfs_h_create_from_handle (struct glfs *fs,
+ unsigned char *handle, int len,
+ struct stat *stat);
+
+/* Operations enabling object handles to fd transitions */
+struct glfs_fd *glfs_h_opendir (struct glfs *fs, struct glfs_object *object);
+
+struct glfs_fd *glfs_h_open (struct glfs *fs, struct glfs_object *object,
+ int flags);
+
+__END_DECLS
+
+#endif /* !_GLFS_HANDLES_H */ \ No newline at end of file
diff --git a/api/src/glfs-internal.h b/api/src/glfs-internal.h
new file mode 100644
index 000000000..ec1d5579d
--- /dev/null
+++ b/api/src/glfs-internal.h
@@ -0,0 +1,200 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+#ifndef _GLFS_INTERNAL_H
+#define _GLFS_INTERNAL_H
+
+#include "xlator.h"
+
+#define GLFS_SYMLINK_MAX_FOLLOW 2048
+
+#define DEFAULT_REVAL_COUNT 1
+
+#define ESTALE_RETRY(ret,errno,reval,loc,label) do { \
+ if (ret == -1 && errno == ESTALE) { \
+ if (reval < DEFAULT_REVAL_COUNT) { \
+ reval++; \
+ loc_wipe (loc); \
+ goto label; \
+ } \
+ } \
+ } while (0)
+
+#define GLFS_LOC_FILL_INODE(oinode, loc, label) do { \
+ loc.inode = inode_ref (oinode); \
+ uuid_copy (loc.gfid, oinode->gfid); \
+ ret = glfs_loc_touchup (&loc); \
+ if (ret != 0) { \
+ errno = EINVAL; \
+ goto label; \
+ } \
+ } while (0)
+
+#define GLFS_LOC_FILL_PINODE(pinode, loc, ret, errno, label, path) do { \
+ loc.inode = inode_new (pinode->table); \
+ if (!loc.inode) { \
+ ret = -1; \
+ errno = ENOMEM; \
+ goto label; \
+ } \
+ loc.parent = inode_ref (pinode); \
+ loc.name = path; \
+ ret = glfs_loc_touchup (&loc); \
+ if (ret != 0) { \
+ errno = EINVAL; \
+ goto label; \
+ } \
+ } while (0)
+
+struct glfs;
+
+typedef int (*glfs_init_cbk) (struct glfs *fs, int ret);
+
+struct glfs {
+ char *volname;
+
+ glusterfs_ctx_t *ctx;
+
+ pthread_t poller;
+
+ glfs_init_cbk init_cbk;
+ pthread_mutex_t mutex;
+ pthread_cond_t cond;
+ int init;
+ int ret;
+ int err;
+
+ xlator_t *active_subvol;
+ xlator_t *next_subvol;
+ xlator_t *old_subvol;
+
+ char *oldvolfile;
+ ssize_t oldvollen;
+
+ inode_t *cwd;
+
+ uint32_t dev_id; /* Used to fill st_dev in struct stat */
+
+ struct list_head openfds;
+
+ gf_boolean_t migration_in_progress;
+};
+
+struct glfs_fd {
+ struct list_head openfds;
+ struct glfs *fs;
+ off_t offset;
+ fd_t *fd; /* Currently guared by @fs->mutex. TODO: per-glfd lock */
+ struct list_head entries;
+ gf_dirent_t *next;
+ struct dirent *readdirbuf;
+};
+
+/* glfs object handle introduced for the alternate gfapi implementation based
+ on glfs handles/gfid/inode
+*/
+struct glfs_object {
+ inode_t *inode;
+ uuid_t gfid;
+};
+
+#define DEFAULT_EVENT_POOL_SIZE 16384
+#define GF_MEMPOOL_COUNT_OF_DICT_T 4096
+#define GF_MEMPOOL_COUNT_OF_DATA_T (GF_MEMPOOL_COUNT_OF_DICT_T * 4)
+#define GF_MEMPOOL_COUNT_OF_DATA_PAIR_T (GF_MEMPOOL_COUNT_OF_DICT_T * 4)
+
+int glfs_mgmt_init (struct glfs *fs);
+void glfs_init_done (struct glfs *fs, int ret);
+int glfs_process_volfp (struct glfs *fs, FILE *fp);
+int glfs_resolve (struct glfs *fs, xlator_t *subvol, const char *path, loc_t *loc,
+ struct iatt *iatt, int reval);
+int glfs_lresolve (struct glfs *fs, xlator_t *subvol, const char *path, loc_t *loc,
+ struct iatt *iatt, int reval);
+fd_t *glfs_resolve_fd (struct glfs *fs, xlator_t *subvol, struct glfs_fd *glfd);
+
+fd_t *__glfs_migrate_fd (struct glfs *fs, xlator_t *subvol, struct glfs_fd *glfd);
+
+int glfs_first_lookup (xlator_t *subvol);
+
+static inline void
+__glfs_entry_fs (struct glfs *fs)
+{
+ THIS = fs->ctx->master;
+}
+
+
+static inline void
+__glfs_entry_fd (struct glfs_fd *fd)
+{
+ THIS = fd->fd->inode->table->xl->ctx->master;
+}
+
+
+/*
+ By default all lock attempts from user context must
+ use glfs_lock() and glfs_unlock(). This allows
+ for a safe implementation of graph migration where
+ we can give up the mutex during syncop calls so
+ that bottom up calls (particularly CHILD_UP notify)
+ can do a mutex_lock() on @glfs without deadlocking
+ the filesystem
+*/
+static inline int
+glfs_lock (struct glfs *fs)
+{
+ pthread_mutex_lock (&fs->mutex);
+
+ while (!fs->init)
+ pthread_cond_wait (&fs->cond, &fs->mutex);
+
+ while (fs->migration_in_progress)
+ pthread_cond_wait (&fs->cond, &fs->mutex);
+
+ return 0;
+}
+
+
+static inline void
+glfs_unlock (struct glfs *fs)
+{
+ pthread_mutex_unlock (&fs->mutex);
+}
+
+
+void glfs_fd_destroy (struct glfs_fd *glfd);
+
+struct glfs_fd *glfs_fd_new (struct glfs *fs);
+void glfs_fd_bind (struct glfs_fd *glfd);
+
+xlator_t * glfs_active_subvol (struct glfs *fs);
+xlator_t * __glfs_active_subvol (struct glfs *fs);
+void glfs_subvol_done (struct glfs *fs, xlator_t *subvol);
+
+inode_t * glfs_refresh_inode (xlator_t *subvol, inode_t *inode);
+
+inode_t *glfs_cwd_get (struct glfs *fs);
+int glfs_cwd_set (struct glfs *fs, inode_t *inode);
+inode_t *glfs_resolve_inode (struct glfs *fs, xlator_t *subvol,
+ struct glfs_object *object);
+int glfs_create_object (loc_t *loc, struct glfs_object **retobject);
+int __glfs_cwd_set (struct glfs *fs, inode_t *inode);
+
+int glfs_resolve_base (struct glfs *fs, xlator_t *subvol, inode_t *inode,
+ struct iatt *iatt);
+int glfs_resolve_at (struct glfs *fs, xlator_t *subvol, inode_t *at,
+ const char *origpath, loc_t *loc, struct iatt *iatt,
+ int follow, int reval);
+int glfs_loc_touchup (loc_t *loc);
+void glfs_iatt_to_stat (struct glfs *fs, struct iatt *iatt, struct stat *stat);
+int glfs_loc_link (loc_t *loc, struct iatt *iatt);
+int glfs_loc_unlink (loc_t *loc);
+
+#endif /* !_GLFS_INTERNAL_H */
diff --git a/api/src/glfs-master.c b/api/src/glfs-master.c
new file mode 100644
index 000000000..c02534c18
--- /dev/null
+++ b/api/src/glfs-master.c
@@ -0,0 +1,154 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <limits.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "glusterfs.h"
+
+#include "glfs-internal.h"
+#include "glfs-mem-types.h"
+
+
+int
+glfs_graph_setup (struct glfs *fs, glusterfs_graph_t *graph)
+{
+ xlator_t *new_subvol = NULL;
+ xlator_t *old_subvol = NULL;
+ inode_table_t *itable = NULL;
+ int ret = -1;
+
+ new_subvol = graph->top;
+
+ /* This is called in a bottom-up context, it should specifically
+ NOT be glfs_lock()
+ */
+ pthread_mutex_lock (&fs->mutex);
+ {
+ if (new_subvol->switched ||
+ new_subvol == fs->active_subvol ||
+ new_subvol == fs->next_subvol) {
+ /* Spurious CHILD_UP event on old graph */
+ ret = 0;
+ goto unlock;
+ }
+
+ if (!new_subvol->itable) {
+ itable = inode_table_new (131072, new_subvol);
+ if (!itable) {
+ errno = ENOMEM;
+ ret = -1;
+ goto unlock;
+ }
+
+ new_subvol->itable = itable;
+ }
+
+ old_subvol = fs->next_subvol;
+ fs->next_subvol = new_subvol;
+ fs->next_subvol->winds++; /* first ref */
+ ret = 0;
+ }
+unlock:
+ pthread_mutex_unlock (&fs->mutex);
+
+ if (old_subvol)
+ /* wasn't picked up so far, skip */
+ glfs_subvol_done (fs, old_subvol);
+
+ return ret;
+}
+
+
+int
+notify (xlator_t *this, int event, void *data, ...)
+{
+ glusterfs_graph_t *graph = NULL;
+ struct glfs *fs = NULL;
+
+ graph = data;
+ fs = this->private;
+
+ switch (event) {
+ case GF_EVENT_GRAPH_NEW:
+ gf_log (this->name, GF_LOG_INFO, "New graph %s (%d) coming up",
+ uuid_utoa ((unsigned char *)graph->graph_uuid),
+ graph->id);
+ break;
+ case GF_EVENT_CHILD_UP:
+ glfs_graph_setup (fs, graph);
+ glfs_init_done (fs, 0);
+ break;
+ case GF_EVENT_CHILD_DOWN:
+ glfs_graph_setup (fs, graph);
+ glfs_init_done (fs, 1);
+ break;
+ case GF_EVENT_CHILD_CONNECTING:
+ break;
+ default:
+ gf_log (this->name, GF_LOG_DEBUG,
+ "got notify event %d", event);
+ break;
+ }
+
+ return 0;
+}
+
+
+int
+mem_acct_init (xlator_t *this)
+{
+ int ret = -1;
+
+ if (!this)
+ return ret;
+
+ ret = xlator_mem_acct_init (this, glfs_mt_end + 1);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to initialise "
+ "memory accounting");
+ return ret;
+ }
+
+ return 0;
+}
+
+
+int
+init (xlator_t *this)
+{
+ return 0;
+}
+
+
+void
+fini (xlator_t *this)
+{
+
+}
+
+
+struct xlator_dumpops dumpops;
+
+
+struct xlator_fops fops;
+
+
+struct xlator_cbks cbks;
diff --git a/api/src/glfs-mem-types.h b/api/src/glfs-mem-types.h
new file mode 100644
index 000000000..3301b3da5
--- /dev/null
+++ b/api/src/glfs-mem-types.h
@@ -0,0 +1,32 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _GLFS_MEM_TYPES_H
+#define _GLFS_MEM_TYPES_H
+
+#include "mem-types.h"
+
+#define GF_MEM_TYPE_START (gf_common_mt_end + 1)
+
+enum glfs_mem_types_ {
+ glfs_mt_glfs_t = GF_MEM_TYPE_START,
+ glfs_mt_call_pool_t,
+ glfs_mt_xlator_t,
+ glfs_mt_glfs_fd_t,
+ glfs_mt_glfs_io_t,
+ glfs_mt_volfile_t,
+ glfs_mt_xlator_cmdline_option_t,
+ glfs_mt_glfs_object_t,
+ glfs_mt_readdirbuf_t,
+ glfs_mt_end
+
+};
+#endif
+
diff --git a/api/src/glfs-mgmt.c b/api/src/glfs-mgmt.c
new file mode 100644
index 000000000..6843e9cb3
--- /dev/null
+++ b/api/src/glfs-mgmt.c
@@ -0,0 +1,543 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <pthread.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif /* _CONFIG_H */
+
+#include "glusterfs.h"
+#include "stack.h"
+#include "dict.h"
+#include "event.h"
+#include "defaults.h"
+
+#include "rpc-clnt.h"
+#include "protocol-common.h"
+#include "glusterfs3.h"
+#include "portmap-xdr.h"
+#include "xdr-generic.h"
+
+#include "syncop.h"
+#include "xlator.h"
+
+#include "glfs-internal.h"
+#include "glfs-mem-types.h"
+
+
+int glfs_volfile_fetch (struct glfs *fs);
+
+int
+glfs_process_volfp (struct glfs *fs, FILE *fp)
+{
+ glusterfs_graph_t *graph = NULL;
+ int ret = -1;
+ xlator_t *trav = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = fs->ctx;
+ graph = glusterfs_graph_construct (fp);
+ if (!graph) {
+ gf_log ("glfs", GF_LOG_ERROR, "failed to construct the graph");
+ goto out;
+ }
+
+ for (trav = graph->first; trav; trav = trav->next) {
+ if (strcmp (trav->type, "mount/fuse") == 0) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "fuse xlator cannot be specified "
+ "in volume file");
+ goto out;
+ }
+ }
+
+ ret = glusterfs_graph_prepare (graph, ctx);
+ if (ret) {
+ glusterfs_graph_destroy (graph);
+ goto out;
+ }
+
+ ret = glusterfs_graph_activate (graph, ctx);
+
+ if (ret) {
+ glusterfs_graph_destroy (graph);
+ goto out;
+ }
+
+ ret = 0;
+out:
+ if (fp)
+ fclose (fp);
+
+ if (!ctx->active) {
+ ret = -1;
+ }
+
+ return ret;
+}
+
+
+int
+mgmt_cbk_spec (struct rpc_clnt *rpc, void *mydata, void *data)
+{
+ struct glfs *fs = NULL;
+ xlator_t *this = NULL;
+
+ this = mydata;
+ fs = this->private;
+
+ glfs_volfile_fetch (fs);
+
+ return 0;
+}
+
+
+int
+mgmt_cbk_event (struct rpc_clnt *rpc, void *mydata, void *data)
+{
+ return 0;
+}
+
+
+rpcclnt_cb_actor_t mgmt_cbk_actors[] = {
+ [GF_CBK_FETCHSPEC] = {"FETCHSPEC", GF_CBK_FETCHSPEC, mgmt_cbk_spec },
+ [GF_CBK_EVENT_NOTIFY] = {"EVENTNOTIFY", GF_CBK_EVENT_NOTIFY,
+ mgmt_cbk_event},
+};
+
+
+struct rpcclnt_cb_program mgmt_cbk_prog = {
+ .progname = "GlusterFS Callback",
+ .prognum = GLUSTER_CBK_PROGRAM,
+ .progver = GLUSTER_CBK_VERSION,
+ .actors = mgmt_cbk_actors,
+ .numactors = GF_CBK_MAXVALUE,
+};
+
+char *clnt_handshake_procs[GF_HNDSK_MAXVALUE] = {
+ [GF_HNDSK_NULL] = "NULL",
+ [GF_HNDSK_SETVOLUME] = "SETVOLUME",
+ [GF_HNDSK_GETSPEC] = "GETSPEC",
+ [GF_HNDSK_PING] = "PING",
+ [GF_HNDSK_EVENT_NOTIFY] = "EVENTNOTIFY",
+};
+
+rpc_clnt_prog_t clnt_handshake_prog = {
+ .progname = "GlusterFS Handshake",
+ .prognum = GLUSTER_HNDSK_PROGRAM,
+ .progver = GLUSTER_HNDSK_VERSION,
+ .procnames = clnt_handshake_procs,
+};
+
+
+int
+mgmt_submit_request (void *req, call_frame_t *frame,
+ glusterfs_ctx_t *ctx,
+ rpc_clnt_prog_t *prog, int procnum,
+ fop_cbk_fn_t cbkfn, xdrproc_t xdrproc)
+{
+ int ret = -1;
+ int count = 0;
+ struct iovec iov = {0, };
+ struct iobuf *iobuf = NULL;
+ struct iobref *iobref = NULL;
+ ssize_t xdr_size = 0;
+
+ iobref = iobref_new ();
+ if (!iobref) {
+ goto out;
+ }
+
+ if (req) {
+ xdr_size = xdr_sizeof (xdrproc, req);
+
+ iobuf = iobuf_get2 (ctx->iobuf_pool, xdr_size);
+ if (!iobuf) {
+ goto out;
+ };
+
+ iobref_add (iobref, iobuf);
+
+ iov.iov_base = iobuf->ptr;
+ iov.iov_len = iobuf_pagesize (iobuf);
+
+ /* Create the xdr payload */
+ ret = xdr_serialize_generic (iov, req, xdrproc);
+ if (ret == -1) {
+ gf_log (THIS->name, GF_LOG_WARNING,
+ "failed to create XDR payload");
+ goto out;
+ }
+ iov.iov_len = ret;
+ count = 1;
+ }
+
+ /* Send the msg */
+ ret = rpc_clnt_submit (ctx->mgmt, prog, procnum, cbkfn,
+ &iov, count,
+ NULL, 0, iobref, frame, NULL, 0, NULL, 0, NULL);
+
+out:
+ if (iobref)
+ iobref_unref (iobref);
+
+ if (iobuf)
+ iobuf_unref (iobuf);
+ return ret;
+}
+
+
+static int
+glusterfs_oldvolfile_update (struct glfs *fs, char *volfile, ssize_t size)
+{
+ int ret = -1;
+
+ fs->oldvollen = size;
+ if (!fs->oldvolfile) {
+ fs->oldvolfile = GF_CALLOC (1, size+1, glfs_mt_volfile_t);
+ } else {
+ fs->oldvolfile = GF_REALLOC (fs->oldvolfile, size+1);
+ }
+
+ if (!fs->oldvolfile) {
+ fs->oldvollen = 0;
+ } else {
+ memcpy (fs->oldvolfile, volfile, size);
+ fs->oldvollen = size;
+ ret = 0;
+ }
+
+ return ret;
+}
+
+
+int
+mgmt_getspec_cbk (struct rpc_req *req, struct iovec *iov, int count,
+ void *myframe)
+{
+ gf_getspec_rsp rsp = {0,};
+ call_frame_t *frame = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ int ret = 0;
+ ssize_t size = 0;
+ FILE *tmpfp = NULL;
+ int need_retry = 0;
+ struct glfs *fs = NULL;
+
+ frame = myframe;
+ ctx = frame->this->ctx;
+ fs = ((xlator_t *)ctx->master)->private;
+
+ if (-1 == req->rpc_status) {
+ ret = -1;
+ need_retry = 1;
+ goto out;
+ }
+
+ ret = xdr_to_generic (*iov, &rsp, (xdrproc_t)xdr_gf_getspec_rsp);
+ if (ret < 0) {
+ gf_log (frame->this->name, GF_LOG_ERROR, "XDR decoding error");
+ ret = -1;
+ goto out;
+ }
+
+ if (-1 == rsp.op_ret) {
+ gf_log (frame->this->name, GF_LOG_ERROR,
+ "failed to get the 'volume file' from server");
+ ret = -1;
+ errno = rsp.op_errno;
+ goto out;
+ }
+
+ ret = 0;
+ size = rsp.op_ret;
+
+ if ((size == fs->oldvollen) &&
+ (memcmp (fs->oldvolfile, rsp.spec, size) == 0)) {
+ gf_log (frame->this->name, GF_LOG_INFO,
+ "No change in volfile, continuing");
+ goto out;
+ }
+
+ tmpfp = tmpfile ();
+ if (!tmpfp) {
+ ret = -1;
+ goto out;
+ }
+
+ fwrite (rsp.spec, size, 1, tmpfp);
+ fflush (tmpfp);
+ if (ferror (tmpfp)) {
+ ret = -1;
+ goto out;
+ }
+
+ /* Check if only options have changed. No need to reload the
+ * volfile if topology hasn't changed.
+ * glusterfs_volfile_reconfigure returns 3 possible return states
+ * return 0 =======> reconfiguration of options has succeeded
+ * return 1 =======> the graph has to be reconstructed and all the xlators should be inited
+ * return -1(or -ve) =======> Some Internal Error occurred during the operation
+ */
+
+ ret = glusterfs_volfile_reconfigure (fs->oldvollen, tmpfp, fs->ctx,
+ fs->oldvolfile);
+ if (ret == 0) {
+ gf_log ("glusterfsd-mgmt", GF_LOG_DEBUG,
+ "No need to re-load volfile, reconfigure done");
+ ret = glusterfs_oldvolfile_update (fs, rsp.spec, size);
+ goto out;
+ }
+
+ if (ret < 0) {
+ gf_log ("glusterfsd-mgmt", GF_LOG_DEBUG,
+ "Reconfigure failed !!");
+ goto out;
+ }
+
+ ret = glfs_process_volfp (fs, tmpfp);
+ /* tmpfp closed */
+ tmpfp = NULL;
+ if (ret)
+ goto out;
+
+ ret = glusterfs_oldvolfile_update (fs, rsp.spec, size);
+out:
+ STACK_DESTROY (frame->root);
+
+ if (rsp.spec)
+ free (rsp.spec);
+
+ // Stop if server is running at an unsupported op-version
+ if (ENOTSUP == ret) {
+ gf_log ("mgmt", GF_LOG_ERROR, "Server is operating at an "
+ "op-version which is not supported");
+ errno = ENOTSUP;
+ glfs_init_done (fs, -1);
+ }
+
+ if (ret && ctx && !ctx->active) {
+ /* Do it only for the first time */
+ /* Failed to get the volume file, something wrong,
+ restart the process */
+ gf_log ("glfs-mgmt", GF_LOG_ERROR,
+ "failed to fetch volume file (key:%s)",
+ ctx->cmd_args.volfile_id);
+ if (!need_retry) {
+ if (!errno)
+ errno = EINVAL;
+ glfs_init_done (fs, -1);
+ }
+ }
+
+ if (tmpfp)
+ fclose (tmpfp);
+
+ return 0;
+}
+
+
+int
+glfs_volfile_fetch (struct glfs *fs)
+{
+ cmd_args_t *cmd_args = NULL;
+ gf_getspec_req req = {0, };
+ int ret = 0;
+ call_frame_t *frame = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ dict_t *dict = NULL;
+
+ ctx = fs->ctx;
+ cmd_args = &ctx->cmd_args;
+
+ frame = create_frame (THIS, ctx->pool);
+
+ req.key = cmd_args->volfile_id;
+ req.flags = 0;
+
+ dict = dict_new ();
+ if (!dict) {
+ ret = -1;
+ goto out;
+ }
+
+ // Set the supported min and max op-versions, so glusterd can make a
+ // decision
+ ret = dict_set_int32 (dict, "min-op-version", GD_OP_VERSION_MIN);
+ if (ret) {
+ gf_log (THIS->name, GF_LOG_ERROR, "Failed to set min-op-version"
+ " in request dict");
+ goto out;
+ }
+
+ ret = dict_set_int32 (dict, "max-op-version", GD_OP_VERSION_MAX);
+ if (ret) {
+ gf_log (THIS->name, GF_LOG_ERROR, "Failed to set max-op-version"
+ " in request dict");
+ goto out;
+ }
+
+ ret = dict_allocate_and_serialize (dict, &req.xdata.xdata_val,
+ &req.xdata.xdata_len);
+ if (ret < 0) {
+ gf_log (THIS->name, GF_LOG_ERROR,
+ "Failed to serialize dictionary");
+ goto out;
+ }
+
+ ret = mgmt_submit_request (&req, frame, ctx, &clnt_handshake_prog,
+ GF_HNDSK_GETSPEC, mgmt_getspec_cbk,
+ (xdrproc_t)xdr_gf_getspec_req);
+out:
+ return ret;
+}
+
+
+static int
+mgmt_rpc_notify (struct rpc_clnt *rpc, void *mydata, rpc_clnt_event_t event,
+ void *data)
+{
+ xlator_t *this = NULL;
+ cmd_args_t *cmd_args = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ struct glfs *fs = NULL;
+ int ret = 0;
+
+ this = mydata;
+ ctx = this->ctx;
+ fs = ((xlator_t *)ctx->master)->private;
+ cmd_args = &ctx->cmd_args;
+
+ switch (event) {
+ case RPC_CLNT_DISCONNECT:
+ if (!ctx->active) {
+ cmd_args->max_connect_attempts--;
+ gf_log ("glfs-mgmt", GF_LOG_ERROR,
+ "failed to connect with remote-host: %s",
+ strerror (errno));
+ gf_log ("glfs-mgmt", GF_LOG_INFO,
+ "%d connect attempts left",
+ cmd_args->max_connect_attempts);
+ if (0 >= cmd_args->max_connect_attempts) {
+ errno = ENOTCONN;
+ glfs_init_done (fs, -1);
+ }
+ }
+ break;
+ case RPC_CLNT_CONNECT:
+ rpc_clnt_set_connected (&((struct rpc_clnt*)ctx->mgmt)->conn);
+
+ ret = glfs_volfile_fetch (fs);
+ if (ret && ctx && (ctx->active == NULL)) {
+ /* Do it only for the first time */
+ /* Exit the process.. there are some wrong options */
+ gf_log ("glfs-mgmt", GF_LOG_ERROR,
+ "failed to fetch volume file (key:%s)",
+ ctx->cmd_args.volfile_id);
+ errno = EINVAL;
+ glfs_init_done (fs, -1);
+ }
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+
+int
+glusterfs_mgmt_notify (int32_t op, void *data, ...)
+{
+ int ret = 0;
+
+ switch (op)
+ {
+ case GF_EN_DEFRAG_STATUS:
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+
+int
+glfs_mgmt_init (struct glfs *fs)
+{
+ cmd_args_t *cmd_args = NULL;
+ struct rpc_clnt *rpc = NULL;
+ dict_t *options = NULL;
+ int ret = -1;
+ int port = GF_DEFAULT_BASE_PORT;
+ char *host = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = fs->ctx;
+ cmd_args = &ctx->cmd_args;
+
+ if (ctx->mgmt)
+ return 0;
+
+ if (cmd_args->volfile_server_port)
+ port = cmd_args->volfile_server_port;
+
+ host = "localhost";
+ if (cmd_args->volfile_server)
+ host = cmd_args->volfile_server;
+
+ ret = rpc_transport_inet_options_build (&options, host, port);
+ if (ret)
+ goto out;
+
+ rpc = rpc_clnt_new (options, THIS->ctx, THIS->name, 8);
+ if (!rpc) {
+ ret = -1;
+ gf_log (THIS->name, GF_LOG_WARNING,
+ "failed to create rpc clnt");
+ goto out;
+ }
+
+ ret = rpc_clnt_register_notify (rpc, mgmt_rpc_notify, THIS);
+ if (ret) {
+ gf_log (THIS->name, GF_LOG_WARNING,
+ "failed to register notify function");
+ goto out;
+ }
+
+ ret = rpcclnt_cbk_program_register (rpc, &mgmt_cbk_prog, THIS);
+ if (ret) {
+ gf_log (THIS->name, GF_LOG_WARNING,
+ "failed to register callback function");
+ goto out;
+ }
+
+ ctx->notify = glusterfs_mgmt_notify;
+
+ /* This value should be set before doing the 'rpc_clnt_start()' as
+ the notify function uses this variable */
+ ctx->mgmt = rpc;
+
+ ret = rpc_clnt_start (rpc);
+out:
+ return ret;
+}
+
diff --git a/api/src/glfs-resolve.c b/api/src/glfs-resolve.c
new file mode 100644
index 000000000..4ca2eb6fc
--- /dev/null
+++ b/api/src/glfs-resolve.c
@@ -0,0 +1,969 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <limits.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "glusterfs.h"
+#include "logging.h"
+#include "stack.h"
+#include "event.h"
+#include "glfs-mem-types.h"
+#include "common-utils.h"
+#include "syncop.h"
+#include "call-stub.h"
+
+#include "glfs-internal.h"
+
+#define graphid_str(subvol) (uuid_utoa((unsigned char *)subvol->graph->graph_uuid))
+
+
+int
+glfs_first_lookup_safe (xlator_t *subvol)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+
+ loc.inode = subvol->itable->root;
+ memset (loc.gfid, 0, 16);
+ loc.gfid[15] = 1;
+ loc.path = "/";
+ loc.name = "";
+
+ ret = syncop_lookup (subvol, &loc, 0, 0, 0, 0);
+
+ gf_log (subvol->name, GF_LOG_DEBUG, "first lookup complete %d", ret);
+
+ return ret;
+}
+
+
+int
+__glfs_first_lookup (struct glfs *fs, xlator_t *subvol)
+{
+ int ret = -1;
+
+ fs->migration_in_progress = 1;
+ pthread_mutex_unlock (&fs->mutex);
+ {
+ ret = glfs_first_lookup_safe (subvol);
+ }
+ pthread_mutex_lock (&fs->mutex);
+ fs->migration_in_progress = 0;
+ pthread_cond_broadcast (&fs->cond);
+
+ return ret;
+}
+
+
+inode_t *
+glfs_refresh_inode_safe (xlator_t *subvol, inode_t *oldinode)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+ struct iatt iatt = {0, };
+ inode_t *newinode = NULL;
+
+
+ if (!oldinode)
+ return NULL;
+
+ if (oldinode->table->xl == subvol)
+ return inode_ref (oldinode);
+
+ newinode = inode_find (subvol->itable, oldinode->gfid);
+ if (newinode)
+ return newinode;
+
+ uuid_copy (loc.gfid, oldinode->gfid);
+ loc.inode = inode_new (subvol->itable);
+ if (!loc.inode)
+ return NULL;
+
+ ret = syncop_lookup (subvol, &loc, 0, &iatt, 0, 0);
+
+ if (ret) {
+ gf_log (subvol->name, GF_LOG_WARNING,
+ "inode refresh of %s failed: %s",
+ uuid_utoa (oldinode->gfid), strerror (errno));
+ loc_wipe (&loc);
+ return NULL;
+ }
+
+ newinode = inode_link (loc.inode, 0, 0, &iatt);
+ if (newinode)
+ inode_lookup (newinode);
+
+ loc_wipe (&loc);
+
+ return newinode;
+}
+
+
+inode_t *
+__glfs_refresh_inode (struct glfs *fs, xlator_t *subvol, inode_t *inode)
+{
+ inode_t *newinode = NULL;
+
+ fs->migration_in_progress = 1;
+ pthread_mutex_unlock (&fs->mutex);
+ {
+ newinode = glfs_refresh_inode_safe (subvol, inode);
+ }
+ pthread_mutex_lock (&fs->mutex);
+ fs->migration_in_progress = 0;
+ pthread_cond_broadcast (&fs->cond);
+
+ return newinode;
+}
+
+int
+glfs_loc_touchup (loc_t *loc)
+{
+ char *path = NULL;
+ int ret = -1;
+ char *bn = NULL;
+
+ if (loc->parent)
+ ret = inode_path (loc->parent, loc->name, &path);
+ else
+ ret = inode_path (loc->inode, 0, &path);
+
+ loc->path = path;
+
+ if (ret < 0 || !path) {
+ ret = -1;
+ errno = ENOMEM;
+ goto out;
+ }
+
+ bn = strrchr (path, '/');
+ if (bn)
+ bn++;
+ loc->name = bn;
+ ret = 0;
+out:
+ return ret;
+}
+
+
+int
+glfs_resolve_symlink (struct glfs *fs, xlator_t *subvol, inode_t *inode,
+ char **lpath)
+{
+ loc_t loc = {0, };
+ char *path = NULL;
+ char *rpath = NULL;
+ int ret = -1;
+
+ loc.inode = inode_ref (inode);
+ uuid_copy (loc.gfid, inode->gfid);
+ ret = inode_path (inode, NULL, &rpath);
+ if (ret < 0)
+ goto out;
+ loc.path = rpath;
+
+ ret = syncop_readlink (subvol, &loc, &path, 4096);
+
+ if (ret < 0)
+ goto out;
+
+ if (lpath)
+ *lpath = path;
+out:
+ loc_wipe (&loc);
+ return ret;
+}
+
+
+int
+glfs_resolve_base (struct glfs *fs, xlator_t *subvol, inode_t *inode,
+ struct iatt *iatt)
+{
+ loc_t loc = {0, };
+ int ret = -1;
+ char *path = NULL;
+
+ loc.inode = inode_ref (inode);
+ uuid_copy (loc.gfid, inode->gfid);
+
+ ret = inode_path (loc.inode, NULL, &path);
+ loc.path = path;
+ if (ret < 0)
+ goto out;
+
+ ret = syncop_lookup (subvol, &loc, NULL, iatt, NULL, NULL);
+out:
+ loc_wipe (&loc);
+
+ return ret;
+}
+
+
+inode_t *
+glfs_resolve_component (struct glfs *fs, xlator_t *subvol, inode_t *parent,
+ const char *component, struct iatt *iatt,
+ int force_lookup)
+{
+ loc_t loc = {0, };
+ inode_t *inode = NULL;
+ int reval = 0;
+ int ret = -1;
+ int glret = -1;
+ struct iatt ciatt = {0, };
+ uuid_t gfid;
+ dict_t *xattr_req = NULL;
+
+ loc.name = component;
+
+ loc.parent = inode_ref (parent);
+ uuid_copy (loc.pargfid, parent->gfid);
+
+
+ if (strcmp (component, ".") == 0)
+ loc.inode = inode_ref (parent);
+ else if (strcmp (component, "..") == 0)
+ loc.inode = inode_parent (parent, 0, 0);
+ else
+ loc.inode = inode_grep (parent->table, parent, component);
+
+ if (loc.inode) {
+ uuid_copy (loc.gfid, loc.inode->gfid);
+ reval = 1;
+
+ if (!force_lookup) {
+ inode = inode_ref (loc.inode);
+ ciatt.ia_type = inode->ia_type;
+ goto found;
+ }
+ } else {
+ uuid_generate (gfid);
+ loc.inode = inode_new (parent->table);
+ }
+
+ if (!loc.inode)
+ goto out;
+
+ glret = glfs_loc_touchup (&loc);
+ if (glret < 0) {
+ ret = -1;
+ goto out;
+ }
+
+ ret = syncop_lookup (subvol, &loc, NULL, &ciatt, NULL, NULL);
+ if (ret && reval) {
+ inode_unref (loc.inode);
+ loc.inode = inode_new (parent->table);
+ if (!loc.inode) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ xattr_req = dict_new ();
+ if (!xattr_req) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ uuid_generate (gfid);
+
+ ret = dict_set_static_bin (xattr_req, "gfid-req", gfid, 16);
+ if (ret) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ ret = syncop_lookup (subvol, &loc, xattr_req, &ciatt,
+ NULL, NULL);
+ }
+ if (ret)
+ goto out;
+
+ inode = inode_link (loc.inode, loc.parent, component, &ciatt);
+found:
+ if (inode)
+ inode_lookup (inode);
+ if (iatt)
+ *iatt = ciatt;
+out:
+ if (xattr_req)
+ dict_unref (xattr_req);
+
+ loc_wipe (&loc);
+
+ return inode;
+}
+
+
+int
+glfs_resolve_at (struct glfs *fs, xlator_t *subvol, inode_t *at,
+ const char *origpath, loc_t *loc, struct iatt *iatt,
+ int follow, int reval)
+{
+ inode_t *inode = NULL;
+ inode_t *parent = NULL;
+ char *saveptr = NULL;
+ char *path = NULL;
+ char *component = NULL;
+ char *next_component = NULL;
+ int ret = -1;
+ struct iatt ciatt = {0, };
+
+ path = gf_strdup (origpath);
+ if (!path) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ parent = NULL;
+ if (at && path[0] != '/') {
+ /* A relative resolution of a path which starts with '/'
+ is equal to an absolute path resolution.
+ */
+ inode = inode_ref (at);
+ } else {
+ inode = inode_ref (subvol->itable->root);
+
+ if (strcmp (path, "/") == 0)
+ glfs_resolve_base (fs, subvol, inode, &ciatt);
+ }
+
+ for (component = strtok_r (path, "/", &saveptr);
+ component; component = next_component) {
+
+ next_component = strtok_r (NULL, "/", &saveptr);
+
+ if (parent)
+ inode_unref (parent);
+
+ parent = inode;
+
+ inode = glfs_resolve_component (fs, subvol, parent,
+ component, &ciatt,
+ /* force hard lookup on the last
+ component, as the caller
+ wants proper iatt filled
+ */
+ (reval || (!next_component &&
+ iatt)));
+ if (!inode)
+ break;
+
+ if (IA_ISLNK (ciatt.ia_type) && (next_component || follow)) {
+ /* If the component is not the last piece,
+ then following it is necessary even if
+ not requested by the caller
+ */
+ char *lpath = NULL;
+ loc_t sym_loc = {0,};
+
+ if (follow > GLFS_SYMLINK_MAX_FOLLOW) {
+ errno = ELOOP;
+ ret = -1;
+ if (inode) {
+ inode_unref (inode);
+ inode = NULL;
+ }
+ break;
+ }
+
+ ret = glfs_resolve_symlink (fs, subvol, inode, &lpath);
+ inode_unref (inode);
+ inode = NULL;
+ if (ret < 0)
+ break;
+
+ ret = glfs_resolve_at (fs, subvol, parent, lpath,
+ &sym_loc,
+ /* followed iatt becomes the
+ component iatt
+ */
+ &ciatt,
+ /* always recurisvely follow while
+ following symlink
+ */
+ follow + 1, reval);
+ if (ret == 0)
+ inode = inode_ref (sym_loc.inode);
+ loc_wipe (&sym_loc);
+ GF_FREE (lpath);
+ }
+
+ if (!next_component)
+ break;
+
+ if (!IA_ISDIR (ciatt.ia_type)) {
+ /* next_component exists and this component is
+ not a directory
+ */
+ inode_unref (inode);
+ inode = NULL;
+ ret = -1;
+ errno = ENOTDIR;
+ break;
+ }
+ }
+
+ if (parent && next_component)
+ /* resolution failed mid-way */
+ goto out;
+
+ /* At this point, all components up to the last parent directory
+ have been resolved successfully (@parent). Resolution of basename
+ might have failed (@inode) if at all.
+ */
+
+ loc->parent = parent;
+ if (parent) {
+ uuid_copy (loc->pargfid, parent->gfid);
+ loc->name = component;
+ }
+
+ loc->inode = inode;
+ if (inode) {
+ uuid_copy (loc->gfid, inode->gfid);
+ if (iatt)
+ *iatt = ciatt;
+ ret = 0;
+ }
+
+ glfs_loc_touchup (loc);
+out:
+ GF_FREE (path);
+
+ /* do NOT loc_wipe here as only last component might be missing */
+
+ return ret;
+}
+
+
+int
+glfs_resolve_path (struct glfs *fs, xlator_t *subvol, const char *origpath,
+ loc_t *loc, struct iatt *iatt, int follow, int reval)
+{
+ int ret = -1;
+ inode_t *cwd = NULL;
+
+ if (origpath[0] == '/')
+ return glfs_resolve_at (fs, subvol, NULL, origpath, loc, iatt,
+ follow, reval);
+
+ cwd = glfs_cwd_get (fs);
+
+ ret = glfs_resolve_at (fs, subvol, cwd, origpath, loc, iatt,
+ follow, reval);
+ if (cwd)
+ inode_unref (cwd);
+
+ return ret;
+}
+
+
+int
+glfs_resolve (struct glfs *fs, xlator_t *subvol, const char *origpath,
+ loc_t *loc, struct iatt *iatt, int reval)
+{
+ int ret = -1;
+
+ ret = glfs_resolve_path (fs, subvol, origpath, loc, iatt, 1, reval);
+
+ return ret;
+}
+
+
+int
+glfs_lresolve (struct glfs *fs, xlator_t *subvol, const char *origpath,
+ loc_t *loc, struct iatt *iatt, int reval)
+{
+ int ret = -1;
+
+ ret = glfs_resolve_path (fs, subvol, origpath, loc, iatt, 0, reval);
+
+ return ret;
+}
+
+
+int
+glfs_migrate_fd_locks_safe (struct glfs *fs, xlator_t *oldsubvol, fd_t *oldfd,
+ xlator_t *newsubvol, fd_t *newfd)
+{
+ dict_t *lockinfo = NULL;
+ int ret = 0;
+ char uuid1[64];
+
+ if (!oldfd->lk_ctx || fd_lk_ctx_empty (oldfd->lk_ctx))
+ return 0;
+
+ newfd->lk_ctx = fd_lk_ctx_ref (oldfd->lk_ctx);
+
+ ret = syncop_fgetxattr (oldsubvol, oldfd, &lockinfo,
+ GF_XATTR_LOCKINFO_KEY);
+ if (ret < 0) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "fgetxattr (%s) failed (%s) on graph %s (%d)",
+ uuid_utoa_r (oldfd->inode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (oldsubvol), oldsubvol->graph->id);
+ goto out;
+ }
+
+ if (!dict_get (lockinfo, GF_XATTR_LOCKINFO_KEY)) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "missing lokinfo key (%s) on graph %s (%d)",
+ uuid_utoa_r (oldfd->inode->gfid, uuid1),
+ graphid_str (oldsubvol), oldsubvol->graph->id);
+ goto out;
+ }
+
+ ret = syncop_fsetxattr (newsubvol, newfd, lockinfo, 0);
+ if (ret < 0) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "fsetxattr (%s) failed (%s) on graph %s (%d)",
+ uuid_utoa_r (newfd->inode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (newsubvol), newsubvol->graph->id);
+ goto out;
+ }
+out:
+ if (lockinfo)
+ dict_unref (lockinfo);
+ return ret;
+}
+
+
+fd_t *
+glfs_migrate_fd_safe (struct glfs *fs, xlator_t *newsubvol, fd_t *oldfd)
+{
+ fd_t *newfd = NULL;
+ inode_t *oldinode = NULL;
+ inode_t *newinode = NULL;
+ xlator_t *oldsubvol = NULL;
+ int ret = -1;
+ loc_t loc = {0, };
+ char uuid1[64];
+
+
+ oldinode = oldfd->inode;
+ oldsubvol = oldinode->table->xl;
+
+ if (oldsubvol == newsubvol)
+ return fd_ref (oldfd);
+
+ if (!oldsubvol->switched) {
+ ret = syncop_fsync (oldsubvol, oldfd, 0);
+ if (ret) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "fsync() failed (%s) on %s graph %s (%d)",
+ strerror (errno),
+ uuid_utoa_r (oldfd->inode->gfid, uuid1),
+ graphid_str (oldsubvol), oldsubvol->graph->id);
+ }
+ }
+
+ newinode = glfs_refresh_inode_safe (newsubvol, oldinode);
+ if (!newinode) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "inode (%s) refresh failed (%s) on graph %s (%d)",
+ uuid_utoa_r (oldinode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (newsubvol), newsubvol->graph->id);
+ goto out;
+ }
+
+ newfd = fd_create (newinode, getpid());
+ if (!newfd) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "fd_create (%s) failed (%s) on graph %s (%d)",
+ uuid_utoa_r (newinode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (newsubvol), newsubvol->graph->id);
+ goto out;
+ }
+
+ loc.inode = inode_ref (newinode);
+
+ ret = inode_path (oldfd->inode, NULL, (char **)&loc.path);
+ if (ret < 0) {
+ gf_log (fs->volname, GF_LOG_INFO, "inode_path failed");
+ goto out;
+ }
+
+ uuid_copy (loc.gfid, oldinode->gfid);
+
+
+ if (IA_ISDIR (oldinode->ia_type))
+ ret = syncop_opendir (newsubvol, &loc, newfd);
+ else
+ ret = syncop_open (newsubvol, &loc,
+ oldfd->flags & ~(O_TRUNC|O_EXCL|O_CREAT),
+ newfd);
+ loc_wipe (&loc);
+
+ if (ret) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "syncop_open%s (%s) failed (%s) on graph %s (%d)",
+ IA_ISDIR (oldinode->ia_type) ? "dir" : "",
+ uuid_utoa_r (newinode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (newsubvol), newsubvol->graph->id);
+ goto out;
+ }
+
+ ret = glfs_migrate_fd_locks_safe (fs, oldsubvol, oldfd, newsubvol,
+ newfd);
+
+ if (ret) {
+ gf_log (fs->volname, GF_LOG_WARNING,
+ "lock migration (%s) failed (%s) on graph %s (%d)",
+ uuid_utoa_r (newinode->gfid, uuid1),
+ strerror (errno),
+ graphid_str (newsubvol), newsubvol->graph->id);
+ goto out;
+ }
+
+ newfd->flags = oldfd->flags;
+ fd_bind (newfd);
+out:
+ if (newinode)
+ inode_unref (newinode);
+
+ if (ret) {
+ fd_unref (newfd);
+ newfd = NULL;
+ }
+
+ return newfd;
+}
+
+
+fd_t *
+__glfs_migrate_fd (struct glfs *fs, xlator_t *newsubvol, struct glfs_fd *glfd)
+{
+ fd_t *oldfd = NULL;
+ fd_t *newfd = NULL;
+
+ oldfd = glfd->fd;
+
+ fs->migration_in_progress = 1;
+ pthread_mutex_unlock (&fs->mutex);
+ {
+ newfd = glfs_migrate_fd_safe (fs, newsubvol, oldfd);
+ }
+ pthread_mutex_lock (&fs->mutex);
+ fs->migration_in_progress = 0;
+ pthread_cond_broadcast (&fs->cond);
+
+ return newfd;
+}
+
+
+fd_t *
+__glfs_resolve_fd (struct glfs *fs, xlator_t *subvol, struct glfs_fd *glfd)
+{
+ fd_t *fd = NULL;
+
+ if (glfd->fd->inode->table->xl == subvol)
+ return fd_ref (glfd->fd);
+
+ fd = __glfs_migrate_fd (fs, subvol, glfd);
+ if (!fd)
+ return NULL;
+
+ if (subvol == fs->active_subvol) {
+ fd_unref (glfd->fd);
+ glfd->fd = fd_ref (fd);
+ }
+
+ return fd;
+}
+
+
+fd_t *
+glfs_resolve_fd (struct glfs *fs, xlator_t *subvol, struct glfs_fd *glfd)
+{
+ fd_t *fd = NULL;
+
+ glfs_lock (fs);
+ {
+ fd = __glfs_resolve_fd (fs, subvol, glfd);
+ }
+ glfs_unlock (fs);
+
+ return fd;
+}
+
+
+void
+__glfs_migrate_openfds (struct glfs *fs, xlator_t *subvol)
+{
+ struct glfs_fd *glfd = NULL;
+ fd_t *fd = NULL;
+
+ list_for_each_entry (glfd, &fs->openfds, openfds) {
+ if (uuid_is_null (glfd->fd->inode->gfid)) {
+ gf_log (fs->volname, GF_LOG_INFO,
+ "skipping openfd %p/%p in graph %s (%d)",
+ glfd, glfd->fd, graphid_str(subvol),
+ subvol->graph->id);
+ /* create in progress, defer */
+ continue;
+ }
+
+ fd = __glfs_migrate_fd (fs, subvol, glfd);
+ if (fd) {
+ fd_unref (glfd->fd);
+ glfd->fd = fd;
+ }
+ }
+}
+
+
+xlator_t *
+__glfs_active_subvol (struct glfs *fs)
+{
+ xlator_t *new_subvol = NULL;
+ int ret = -1;
+ inode_t *new_cwd = NULL;
+
+ if (!fs->next_subvol)
+ return fs->active_subvol;
+
+ new_subvol = fs->next_subvol;
+
+ ret = __glfs_first_lookup (fs, new_subvol);
+ if (ret) {
+ gf_log (fs->volname, GF_LOG_INFO,
+ "first lookup on graph %s (%d) failed (%s)",
+ graphid_str (new_subvol), new_subvol->graph->id,
+ strerror (errno));
+ return NULL;
+ }
+
+ if (fs->cwd) {
+ new_cwd = __glfs_refresh_inode (fs, new_subvol, fs->cwd);
+
+ if (!new_cwd) {
+ char buf1[64];
+ gf_log (fs->volname, GF_LOG_INFO,
+ "cwd refresh of %s graph %s (%d) failed (%s)",
+ uuid_utoa_r (fs->cwd->gfid, buf1),
+ graphid_str (new_subvol),
+ new_subvol->graph->id, strerror (errno));
+ return NULL;
+ }
+ }
+
+ __glfs_migrate_openfds (fs, new_subvol);
+
+ /* switching @active_subvol and @cwd
+ should be atomic
+ */
+ fs->old_subvol = fs->active_subvol;
+ fs->active_subvol = fs->next_subvol;
+ fs->next_subvol = NULL;
+
+ if (new_cwd) {
+ __glfs_cwd_set (fs, new_cwd);
+ inode_unref (new_cwd);
+ }
+
+ gf_log (fs->volname, GF_LOG_INFO, "switched to graph %s (%d)",
+ graphid_str (new_subvol), new_subvol->graph->id);
+
+ return new_subvol;
+}
+
+xlator_t *
+glfs_active_subvol (struct glfs *fs)
+{
+ xlator_t *subvol = NULL;
+ xlator_t *old_subvol = NULL;
+
+ glfs_lock (fs);
+ {
+ subvol = __glfs_active_subvol (fs);
+
+ if (subvol)
+ subvol->winds++;
+
+ if (fs->old_subvol) {
+ old_subvol = fs->old_subvol;
+ fs->old_subvol = NULL;
+ old_subvol->switched = 1;
+ }
+ }
+ glfs_unlock (fs);
+
+ if (old_subvol)
+ glfs_subvol_done (fs, old_subvol);
+
+ return subvol;
+}
+
+
+void
+glfs_subvol_done (struct glfs *fs, xlator_t *subvol)
+{
+ int ref = 0;
+ xlator_t *active_subvol = NULL;
+
+ if (!subvol)
+ return;
+
+ glfs_lock (fs);
+ {
+ ref = (--subvol->winds);
+ active_subvol = fs->active_subvol;
+ }
+ glfs_unlock (fs);
+
+ if (ref == 0) {
+ assert (subvol != active_subvol);
+ xlator_notify (subvol, GF_EVENT_PARENT_DOWN, subvol, NULL);
+ }
+}
+
+
+int
+__glfs_cwd_set (struct glfs *fs, inode_t *inode)
+{
+ if (inode->table->xl != fs->active_subvol) {
+ inode = __glfs_refresh_inode (fs, fs->active_subvol, inode);
+ if (!inode)
+ return -1;
+ } else {
+ inode_ref (inode);
+ }
+
+ if (fs->cwd)
+ inode_unref (fs->cwd);
+
+ fs->cwd = inode;
+
+ return 0;
+}
+
+
+int
+glfs_cwd_set (struct glfs *fs, inode_t *inode)
+{
+ int ret = 0;
+
+ glfs_lock (fs);
+ {
+ ret = __glfs_cwd_set (fs, inode);
+ }
+ glfs_unlock (fs);
+
+ return ret;
+}
+
+
+inode_t *
+__glfs_cwd_get (struct glfs *fs)
+{
+ inode_t *cwd = NULL;
+
+ if (!fs->cwd)
+ return NULL;
+
+ if (fs->cwd->table->xl == fs->active_subvol) {
+ cwd = inode_ref (fs->cwd);
+ return cwd;
+ }
+
+ cwd = __glfs_refresh_inode (fs, fs->active_subvol, fs->cwd);
+
+ return cwd;
+}
+
+inode_t *
+glfs_cwd_get (struct glfs *fs)
+{
+ inode_t *cwd = NULL;
+
+ glfs_lock (fs);
+ {
+ cwd = __glfs_cwd_get (fs);
+ }
+ glfs_unlock (fs);
+
+ return cwd;
+}
+
+inode_t *
+__glfs_resolve_inode (struct glfs *fs, xlator_t *subvol,
+ struct glfs_object *object)
+{
+ inode_t *inode = NULL;
+
+ if (object->inode->table->xl == subvol)
+ return inode_ref (object->inode);
+
+ inode = __glfs_refresh_inode (fs, fs->active_subvol,
+ object->inode);
+ if (!inode)
+ return NULL;
+
+ if (subvol == fs->active_subvol) {
+ inode_unref (object->inode);
+ object->inode = inode_ref (inode);
+ }
+
+ return inode;
+}
+
+inode_t *
+glfs_resolve_inode (struct glfs *fs, xlator_t *subvol,
+ struct glfs_object *object)
+{
+ inode_t *inode = NULL;
+
+ glfs_lock (fs);
+ {
+ inode = __glfs_resolve_inode(fs, subvol, object);
+ }
+ glfs_unlock (fs);
+
+ return inode;
+}
+
+int
+glfs_create_object (loc_t *loc, struct glfs_object **retobject)
+{
+ struct glfs_object *object = NULL;
+
+ object = GF_CALLOC (1, sizeof(struct glfs_object),
+ glfs_mt_glfs_object_t);
+ if (object == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ object->inode = loc->inode;
+ uuid_copy (object->gfid, object->inode->gfid);
+
+ /* we hold the reference */
+ loc->inode = NULL;
+
+ *retobject = object;
+
+ return 0;
+}
diff --git a/api/src/glfs.c b/api/src/glfs.c
new file mode 100644
index 000000000..29ed47c0c
--- /dev/null
+++ b/api/src/glfs.c
@@ -0,0 +1,673 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+/*
+ TODO:
+ - merge locks in glfs_posix_lock for lock self-healing
+ - set proper pid/lk_owner to call frames (currently buried in syncop)
+ - fix logging.c/h to store logfp and loglevel in glusterfs_ctx_t and
+ reach it via THIS.
+ - update syncop functions to accept/return xdata. ???
+ - protocol/client to reconnect immediately after portmap disconnect.
+ - handle SEEK_END failure in _lseek()
+ - handle umask (per filesystem?)
+ - make itables LRU based
+ - 0-copy for readv/writev
+ - reconcile the open/creat mess
+*/
+
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <limits.h>
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "glusterfs.h"
+#include "logging.h"
+#include "stack.h"
+#include "event.h"
+#include "glfs-mem-types.h"
+#include "common-utils.h"
+#include "syncop.h"
+#include "call-stub.h"
+
+#include "glfs.h"
+#include "glfs-internal.h"
+#include "hashfn.h"
+#include "rpc-clnt.h"
+
+
+static gf_boolean_t
+vol_assigned (cmd_args_t *args)
+{
+ return args->volfile || args->volfile_server;
+}
+
+
+static int
+glusterfs_ctx_defaults_init (glusterfs_ctx_t *ctx)
+{
+ call_pool_t *pool = NULL;
+ int ret = -1;
+
+ xlator_mem_acct_init (THIS, glfs_mt_end + 1);
+
+ ctx->process_uuid = generate_glusterfs_ctx_id ();
+ if (!ctx->process_uuid) {
+ goto err;
+ }
+
+ ctx->page_size = 128 * GF_UNIT_KB;
+
+ ctx->iobuf_pool = iobuf_pool_new ();
+ if (!ctx->iobuf_pool) {
+ goto err;
+ }
+
+ ctx->event_pool = event_pool_new (DEFAULT_EVENT_POOL_SIZE);
+ if (!ctx->event_pool) {
+ goto err;
+ }
+
+ ctx->env = syncenv_new (0, 0, 0);
+ if (!ctx->env) {
+ goto err;
+ }
+
+ pool = GF_CALLOC (1, sizeof (call_pool_t),
+ glfs_mt_call_pool_t);
+ if (!pool) {
+ goto err;
+ }
+
+ /* frame_mem_pool size 112 * 4k */
+ pool->frame_mem_pool = mem_pool_new (call_frame_t, 4096);
+ if (!pool->frame_mem_pool) {
+ goto err;
+ }
+ /* stack_mem_pool size 256 * 1024 */
+ pool->stack_mem_pool = mem_pool_new (call_stack_t, 1024);
+ if (!pool->stack_mem_pool) {
+ goto err;
+ }
+
+ ctx->stub_mem_pool = mem_pool_new (call_stub_t, 1024);
+ if (!ctx->stub_mem_pool) {
+ goto err;
+ }
+
+ ctx->dict_pool = mem_pool_new (dict_t, GF_MEMPOOL_COUNT_OF_DICT_T);
+ if (!ctx->dict_pool)
+ goto err;
+
+ ctx->dict_pair_pool = mem_pool_new (data_pair_t,
+ GF_MEMPOOL_COUNT_OF_DATA_PAIR_T);
+ if (!ctx->dict_pair_pool)
+ goto err;
+
+ ctx->dict_data_pool = mem_pool_new (data_t, GF_MEMPOOL_COUNT_OF_DATA_T);
+ if (!ctx->dict_data_pool)
+ goto err;
+
+ INIT_LIST_HEAD (&pool->all_frames);
+ INIT_LIST_HEAD (&ctx->cmd_args.xlator_options);
+ LOCK_INIT (&pool->lock);
+ ctx->pool = pool;
+
+ pthread_mutex_init (&(ctx->lock), NULL);
+
+ ret = 0;
+err:
+ if (ret && pool) {
+ if (pool->frame_mem_pool)
+ mem_pool_destroy (pool->frame_mem_pool);
+ if (pool->stack_mem_pool)
+ mem_pool_destroy (pool->stack_mem_pool);
+ GF_FREE (pool);
+ }
+
+ if (ret && ctx) {
+ if (ctx->stub_mem_pool)
+ mem_pool_destroy (ctx->stub_mem_pool);
+ if (ctx->dict_pool)
+ mem_pool_destroy (ctx->dict_pool);
+ if (ctx->dict_data_pool)
+ mem_pool_destroy (ctx->dict_data_pool);
+ if (ctx->dict_pair_pool)
+ mem_pool_destroy (ctx->dict_pair_pool);
+ }
+
+ return ret;
+}
+
+
+static int
+create_master (struct glfs *fs)
+{
+ int ret = 0;
+ xlator_t *master = NULL;
+
+ master = GF_CALLOC (1, sizeof (*master),
+ glfs_mt_xlator_t);
+ if (!master)
+ goto err;
+
+ master->name = gf_strdup ("gfapi");
+ if (!master->name)
+ goto err;
+
+ if (xlator_set_type (master, "mount/api") == -1) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "master xlator for %s initialization failed",
+ fs->volname);
+ goto err;
+ }
+
+ master->ctx = fs->ctx;
+ master->private = fs;
+ master->options = get_new_dict ();
+ if (!master->options)
+ goto err;
+
+
+ ret = xlator_init (master);
+ if (ret) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "failed to initialize gfapi translator");
+ goto err;
+ }
+
+ fs->ctx->master = master;
+ THIS = master;
+
+ return 0;
+
+err:
+ if (master) {
+ xlator_destroy (master);
+ }
+
+ return -1;
+}
+
+
+static FILE *
+get_volfp (struct glfs *fs)
+{
+ int ret = 0;
+ cmd_args_t *cmd_args = NULL;
+ FILE *specfp = NULL;
+ struct stat statbuf;
+
+ cmd_args = &fs->ctx->cmd_args;
+
+ ret = lstat (cmd_args->volfile, &statbuf);
+ if (ret == -1) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "%s: %s", cmd_args->volfile, strerror (errno));
+ return NULL;
+ }
+
+ if ((specfp = fopen (cmd_args->volfile, "r")) == NULL) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "volume file %s: %s",
+ cmd_args->volfile,
+ strerror (errno));
+ return NULL;
+ }
+
+ gf_log ("glfs", GF_LOG_DEBUG,
+ "loading volume file %s", cmd_args->volfile);
+
+ return specfp;
+}
+
+
+int
+glfs_volumes_init (struct glfs *fs)
+{
+ FILE *fp = NULL;
+ cmd_args_t *cmd_args = NULL;
+ int ret = 0;
+
+ cmd_args = &fs->ctx->cmd_args;
+
+ if (!vol_assigned (cmd_args))
+ return -1;
+
+ if (cmd_args->volfile_server) {
+ ret = glfs_mgmt_init (fs);
+ goto out;
+ }
+
+ fp = get_volfp (fs);
+
+ if (!fp) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "Cannot reach volume specification file");
+ ret = -1;
+ goto out;
+ }
+
+ ret = glfs_process_volfp (fs, fp);
+ if (ret)
+ goto out;
+
+out:
+ return ret;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+int
+glfs_set_xlator_option (struct glfs *fs, const char *xlator, const char *key,
+ const char *value)
+{
+ xlator_cmdline_option_t *option = NULL;
+
+ option = GF_CALLOC (1, sizeof (*option),
+ glfs_mt_xlator_cmdline_option_t);
+ if (!option)
+ goto enomem;
+
+ INIT_LIST_HEAD (&option->cmd_args);
+
+ option->volume = gf_strdup (xlator);
+ if (!option->volume)
+ goto enomem;
+ option->key = gf_strdup (key);
+ if (!option->key)
+ goto enomem;
+ option->value = gf_strdup (value);
+ if (!option->value)
+ goto enomem;
+
+ list_add (&option->cmd_args, &fs->ctx->cmd_args.xlator_options);
+
+ return 0;
+enomem:
+ errno = ENOMEM;
+
+ if (!option)
+ return -1;
+
+ GF_FREE (option->volume);
+ GF_FREE (option->key);
+ GF_FREE (option->value);
+ GF_FREE (option);
+
+ return -1;
+}
+
+int glfs_setfsuid (uid_t fsuid)
+{
+ return syncopctx_setfsuid (&fsuid);
+}
+
+int glfs_setfsgid (gid_t fsgid)
+{
+ return syncopctx_setfsgid (&fsgid);
+}
+
+int glfs_setfsgroups (size_t size, const gid_t *list)
+{
+ return syncopctx_setfsgroups(size, list);
+}
+
+struct glfs *
+glfs_from_glfd (struct glfs_fd *glfd)
+{
+ return glfd->fs;
+}
+
+
+struct glfs_fd *
+glfs_fd_new (struct glfs *fs)
+{
+ struct glfs_fd *glfd = NULL;
+
+ glfd = GF_CALLOC (1, sizeof (*glfd), glfs_mt_glfs_fd_t);
+ if (!glfd)
+ return NULL;
+
+ glfd->fs = fs;
+
+ INIT_LIST_HEAD (&glfd->openfds);
+
+ return glfd;
+}
+
+
+void
+glfs_fd_bind (struct glfs_fd *glfd)
+{
+ struct glfs *fs = NULL;
+
+ fs = glfd->fs;
+
+ glfs_lock (fs);
+ {
+ list_add_tail (&glfd->openfds, &fs->openfds);
+ }
+ glfs_unlock (fs);
+}
+
+void
+glfs_fd_destroy (struct glfs_fd *glfd)
+{
+ if (!glfd)
+ return;
+
+ glfs_lock (glfd->fs);
+ {
+ list_del_init (&glfd->openfds);
+ }
+ glfs_unlock (glfd->fs);
+
+ if (glfd->fd)
+ fd_unref (glfd->fd);
+
+ GF_FREE (glfd->readdirbuf);
+
+ GF_FREE (glfd);
+}
+
+
+static void *
+glfs_poller (void *data)
+{
+ struct glfs *fs = NULL;
+
+ fs = data;
+
+ event_dispatch (fs->ctx->event_pool);
+
+ return NULL;
+}
+
+
+struct glfs *
+glfs_new (const char *volname)
+{
+ struct glfs *fs = NULL;
+ int ret = -1;
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = glusterfs_ctx_new ();
+ if (!ctx) {
+ return NULL;
+ }
+
+#ifdef DEBUG
+ gf_mem_acct_enable_set (ctx);
+#endif
+
+ /* first globals init, for gf_mem_acct_enable_set () */
+ ret = glusterfs_globals_init (ctx);
+ if (ret)
+ return NULL;
+
+ THIS->ctx = ctx;
+
+ /* then ctx_defaults_init, for xlator_mem_acct_init(THIS) */
+ ret = glusterfs_ctx_defaults_init (ctx);
+ if (ret)
+ return NULL;
+
+ fs = GF_CALLOC (1, sizeof (*fs), glfs_mt_glfs_t);
+ if (!fs)
+ return NULL;
+ fs->ctx = ctx;
+
+ glfs_set_logging (fs, "/dev/null", 0);
+
+ fs->ctx->cmd_args.volfile_id = gf_strdup (volname);
+
+ fs->volname = gf_strdup (volname);
+
+ pthread_mutex_init (&fs->mutex, NULL);
+ pthread_cond_init (&fs->cond, NULL);
+
+ INIT_LIST_HEAD (&fs->openfds);
+
+ return fs;
+}
+
+
+int
+glfs_set_volfile (struct glfs *fs, const char *volfile)
+{
+ cmd_args_t *cmd_args = NULL;
+
+ cmd_args = &fs->ctx->cmd_args;
+
+ if (vol_assigned (cmd_args))
+ return -1;
+
+ cmd_args->volfile = gf_strdup (volfile);
+
+ return 0;
+}
+
+
+int
+glfs_set_volfile_server (struct glfs *fs, const char *transport,
+ const char *host, int port)
+{
+ cmd_args_t *cmd_args = NULL;
+
+ cmd_args = &fs->ctx->cmd_args;
+
+ if (vol_assigned (cmd_args))
+ return -1;
+
+ cmd_args->volfile_server = gf_strdup (host);
+ cmd_args->volfile_server_transport = gf_strdup (transport);
+ cmd_args->volfile_server_port = port;
+ cmd_args->max_connect_attempts = 2;
+
+ return 0;
+}
+
+
+int
+glfs_set_logging (struct glfs *fs, const char *logfile, int loglevel)
+{
+ int ret = 0;
+ char *tmplog = NULL;
+
+ if (!logfile) {
+ ret = gf_set_log_file_path (&fs->ctx->cmd_args);
+ if (ret)
+ goto out;
+ tmplog = fs->ctx->cmd_args.log_file;
+ } else {
+ tmplog = (char *)logfile;
+ }
+
+ ret = gf_log_init (fs->ctx, tmplog, NULL);
+ if (ret)
+ goto out;
+
+ if (loglevel >= 0)
+ gf_log_set_loglevel (loglevel);
+
+out:
+ return ret;
+}
+
+
+int
+glfs_init_wait (struct glfs *fs)
+{
+ int ret = -1;
+
+ /* Always a top-down call, use glfs_lock() */
+ glfs_lock (fs);
+ {
+ while (!fs->init)
+ pthread_cond_wait (&fs->cond,
+ &fs->mutex);
+ ret = fs->ret;
+ errno = fs->err;
+ }
+ glfs_unlock (fs);
+
+ return ret;
+}
+
+
+void
+glfs_init_done (struct glfs *fs, int ret)
+{
+ glfs_init_cbk init_cbk;
+
+ if (!fs) {
+ gf_log ("glfs", GF_LOG_ERROR,
+ "fs is NULL");
+ goto out;
+ }
+
+ init_cbk = fs->init_cbk;
+
+ /* Always a bottom-up call, use mutex_lock() */
+ pthread_mutex_lock (&fs->mutex);
+ {
+ fs->init = 1;
+ fs->ret = ret;
+ fs->err = errno;
+
+ if (!init_cbk)
+ pthread_cond_broadcast (&fs->cond);
+ }
+ pthread_mutex_unlock (&fs->mutex);
+
+ if (init_cbk)
+ init_cbk (fs, ret);
+out:
+ return;
+}
+
+
+int
+glfs_init_common (struct glfs *fs)
+{
+ int ret = -1;
+
+ ret = create_master (fs);
+ if (ret)
+ return ret;
+
+ ret = gf_thread_create (&fs->poller, NULL, glfs_poller, fs);
+ if (ret)
+ return ret;
+
+ ret = glfs_volumes_init (fs);
+ if (ret)
+ return ret;
+
+ fs->dev_id = gf_dm_hashfn (fs->volname, strlen (fs->volname));
+ return ret;
+}
+
+
+int
+glfs_init_async (struct glfs *fs, glfs_init_cbk cbk)
+{
+ int ret = -1;
+
+ fs->init_cbk = cbk;
+
+ ret = glfs_init_common (fs);
+
+ return ret;
+}
+
+
+int
+glfs_init (struct glfs *fs)
+{
+ int ret = -1;
+
+ ret = glfs_init_common (fs);
+ if (ret)
+ return ret;
+
+ ret = glfs_init_wait (fs);
+
+ return ret;
+}
+
+
+int
+glfs_fini (struct glfs *fs)
+{
+ int ret = -1;
+ int countdown = 100;
+ xlator_t *subvol = NULL;
+ glusterfs_ctx_t *ctx = NULL;
+ call_pool_t *call_pool = NULL;
+
+ ctx = fs->ctx;
+
+ if (ctx->mgmt) {
+ rpc_clnt_disable (ctx->mgmt);
+ ctx->mgmt = NULL;
+ }
+
+ __glfs_entry_fs (fs);
+
+ call_pool = fs->ctx->pool;
+
+ while (countdown--) {
+ /* give some time for background frames to finish */
+ if (!call_pool->cnt)
+ break;
+ usleep (100000);
+ }
+ /* leaked frames may exist, we ignore */
+
+ /*We deem glfs_fini as successful if there are no pending frames in the call
+ *pool*/
+ ret = (call_pool->cnt == 0)? 0: -1;
+
+ subvol = glfs_active_subvol (fs);
+ if (subvol) {
+ /* PARENT_DOWN within glfs_subvol_done() is issued only
+ on graph switch (new graph should activiate and
+ decrement the extra @winds count taken in glfs_graph_setup()
+
+ Since we are explicitly destroying, PARENT_DOWN is necessary
+ */
+ xlator_notify (subvol, GF_EVENT_PARENT_DOWN, subvol, 0);
+ /* TBD: wait for CHILD_DOWN before exiting, in case of
+ asynchronous cleanup like graceful socket disconnection
+ in the future.
+ */
+ }
+
+ glfs_subvol_done (fs, subvol);
+
+ if (ctx->log.logfile)
+ fclose (ctx->log.logfile);
+
+ return ret;
+}
diff --git a/api/src/glfs.h b/api/src/glfs.h
new file mode 100644
index 000000000..18fda496e
--- /dev/null
+++ b/api/src/glfs.h
@@ -0,0 +1,581 @@
+/*
+ Copyright (c) 2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+
+#ifndef _GLFS_H
+#define _GLFS_H
+
+/*
+ Enforce the following flags as libgfapi is built
+ with them, and we want programs linking against them to also
+ be built with these flags. This is necessary as it affects
+ some of the structures defined in libc headers (like struct stat)
+ and those definitions need to be consistently compiled in
+ both the library and the application.
+*/
+
+#ifndef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+
+#ifndef __USE_FILE_OFFSET64
+#define __USE_FILE_OFFSET64
+#endif
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/uio.h>
+#include <unistd.h>
+#include <sys/cdefs.h>
+#include <dirent.h>
+#include <sys/statvfs.h>
+
+__BEGIN_DECLS
+
+/* The filesystem object. One object per 'virtual mount' */
+struct glfs;
+typedef struct glfs glfs_t;
+
+
+/*
+ SYNOPSIS
+
+ glfs_new: Create a new 'virtual mount' object.
+
+ DESCRIPTION
+
+ This is most likely the very first function you will use. This function
+ will create a new glfs_t (virtual mount) object in memory.
+
+ On this newly created glfs_t, you need to be either set a volfile path
+ (glfs_set_volfile) or a volfile server (glfs_set_volfile_server).
+
+ The glfs_t object needs to be initialized with glfs_init() before you
+ can start issuing file operations on it.
+
+ PARAMETERS
+
+ @volname: Name of the volume. This identifies the server-side volume and
+ the fetched volfile (equivalent of --volfile-id command line
+ parameter to glusterfsd). When used with glfs_set_volfile() the
+ @volname has no effect (except for appearing in log messages).
+
+ RETURN VALUES
+
+ NULL : Out of memory condition.
+ Others : Pointer to the newly created glfs_t virtual mount object.
+
+*/
+
+glfs_t *glfs_new (const char *volname);
+
+
+/*
+ SYNOPSIS
+
+ glfs_set_volfile: Specify the path to the volume specification file.
+
+ DESCRIPTION
+
+ If you are using a static volume specification file (without dynamic
+ volume management abilities from the CLI), then specify the path to
+ the volume specification file.
+
+ This is incompatible with glfs_set_volfile_server().
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be configured with the volume
+ specification file.
+
+ @volfile: Path to the locally available volume specification file.
+
+ RETURN VALUES
+
+ 0 : Success.
+ -1 : Failure. @errno will be set with the type of failure.
+
+*/
+
+int glfs_set_volfile (glfs_t *fs, const char *volfile);
+
+
+/*
+ SYNOPSIS
+
+ glfs_set_volfile_server: Specify the address of management server.
+
+ DESCRIPTION
+
+ This function specifies the address of the management server (glusterd)
+ to connect, and establish the volume configuration. The @volname
+ parameter passed to glfs_new() is the volume which will be virtually
+ mounted as the glfs_t object. All operations performed by the CLI at
+ the management server will automatically be reflected in the 'virtual
+ mount' object as it maintains a connection to glusterd and polls on
+ configuration change notifications.
+
+ This is incompatible with glfs_set_volfile().
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be configured with the volume
+ specification file.
+
+ @transport: String specifying the transport used to connect to the
+ management daemon. Specifying NULL will result in the usage
+ of the default (tcp) transport type. Permitted values
+ are those what you specify as transport-type in a volume
+ specification file (e.g "tcp", "rdma", "unix".)
+
+ @host: String specifying the address of where to find the management
+ daemon. Depending on the transport type this would either be
+ an FQDN (e.g: "storage01.company.com"), ASCII encoded IP
+ address "192.168.22.1", or a UNIX domain socket path (e.g
+ "/tmp/glusterd.socket".)
+
+ @port: The TCP port number where gluster management daemon is listening.
+ Specifying 0 uses the default port number GF_DEFAULT_BASE_PORT.
+ This parameter is unused if you are using a UNIX domain socket.
+
+ RETURN VALUES
+
+ 0 : Success.
+ -1 : Failure. @errno will be set with the type of failure.
+
+*/
+
+int glfs_set_volfile_server (glfs_t *fs, const char *transport,
+ const char *host, int port);
+
+
+/*
+ SYNOPSIS
+
+ glfs_set_logging: Specify logging parameters.
+
+ DESCRIPTION
+
+ This function specifies logging parameters for the virtual mount.
+ Default log file is /dev/null.
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be configured with the logging parameters.
+
+ @logfile: The logfile to be used for logging. Will be created if it does not
+ already exist (provided system permissions allow). If NULL, a new
+ logfile will be created in default log directory associated with
+ the glusterfs installation.
+
+ @loglevel: Numerical value specifying the degree of verbosity. Higher the
+ value, more verbose the logging.
+
+ RETURN VALUES
+
+ 0 : Success.
+ -1 : Failure. @errno will be set with the type of failure.
+
+*/
+
+int glfs_set_logging (glfs_t *fs, const char *logfile, int loglevel);
+
+
+/*
+ SYNOPSIS
+
+ glfs_init: Initialize the 'virtual mount'
+
+ DESCRIPTION
+
+ This function initializes the glfs_t object. This consists of many steps:
+ - Spawn a poll-loop thread.
+ - Establish connection to management daemon and receive volume specification.
+ - Construct translator graph and initialize graph.
+ - Wait for initialization (connecting to all bricks) to complete.
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be initialized.
+
+ RETURN VALUES
+
+ 0 : Success.
+ -1 : Failure. @errno will be set with the type of failure.
+
+*/
+
+int glfs_init (glfs_t *fs);
+
+
+/*
+ SYNOPSIS
+
+ glfs_fini: Cleanup and destroy the 'virtual mount'
+
+ DESCRIPTION
+
+ This function attempts to gracefully destroy glfs_t object. An attempt is
+ made to wait for all background processing to complete before returning.
+
+ glfs_fini() must be called after all operations on glfs_t is finished.
+
+ IMPORTANT
+
+ IT IS NECESSARY TO CALL glfs_fini() ON ALL THE INITIALIZED glfs_t
+ OBJECTS BEFORE TERMINATING THE PROGRAM. THERE MAY BE CACHED AND
+ UNWRITTEN / INCOMPLETE OPERATIONS STILL IN PROGRESS EVEN THOUGH THE
+ API CALLS HAVE RETURNED. glfs_fini() WILL WAIT FOR BACKGROUND OPERATIONS
+ TO COMPLETE BEFORE RETURNING, THEREBY MAKING IT SAFE FOR THE PROGRAM TO
+ EXIT.
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be destroyed.
+
+ RETURN VALUES
+
+ 0 : Success.
+*/
+
+int glfs_fini (glfs_t *fs);
+
+/*
+ * FILE OPERATION
+ *
+ * What follows are filesystem operations performed on the
+ * 'virtual mount'. The calls here are kept as close to
+ * the POSIX system calls as possible.
+ *
+ * Notes:
+ *
+ * - All paths specified, even if absolute, are relative to the
+ * root of the virtual mount and not the system root (/).
+ *
+ */
+
+/* The file descriptor object. One per open file/directory. */
+
+struct glfs_fd;
+typedef struct glfs_fd glfs_fd_t;
+
+/*
+ * PER THREAD IDENTITY MODIFIERS
+ *
+ * The following operations enable to set a per thread identity context
+ * for the glfs APIs to perform operations as. The calls here are kept as close
+ * to POSIX equivalents as possible.
+ *
+ * NOTES:
+ *
+ * - setgroups is a per thread setting, hence this is named as fsgroups to be
+ * close in naming to the fs(u/g)id APIs
+ * - Typical mode of operation is to set the IDs as required, with the
+ * supplementary groups being optionally set, make the glfs call and post the
+ * glfs operation set them back to eu/gid or uid/gid as appropriate to the
+ * caller
+ * - The groups once set, need to be unset by setting the size to 0 (in which
+ * case the list argument is a do not care)
+ * - Once a process for a thread of operation choses to set the IDs, all glfs
+ * calls made from that thread would default to the IDs set for the thread.
+ * As a result use these APIs with care and ensure that the set IDs are
+ * reverted to global process defaults as required.
+ *
+ */
+int glfs_setfsuid (uid_t fsuid);
+int glfs_setfsgid (gid_t fsgid);
+int glfs_setfsgroups (size_t size, const gid_t *list);
+
+/*
+ SYNOPSIS
+
+ glfs_open: Open a file.
+
+ DESCRIPTION
+
+ This function opens a file on a virtual mount.
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be initialized.
+
+ @path: Path of the file within the virtual mount.
+
+ @flags: Open flags. See open(2). O_CREAT is not supported.
+ Use glfs_creat() for creating files.
+
+ RETURN VALUES
+
+ NULL : Failure. @errno will be set with the type of failure.
+ Others : Pointer to the opened glfs_fd_t.
+
+ */
+
+glfs_fd_t *glfs_open (glfs_t *fs, const char *path, int flags);
+
+
+/*
+ SYNOPSIS
+
+ glfs_creat: Create a file.
+
+ DESCRIPTION
+
+ This function opens a file on a virtual mount.
+
+ PARAMETERS
+
+ @fs: The 'virtual mount' object to be initialized.
+
+ @path: Path of the file within the virtual mount.
+
+ @mode: Permission of the file to be created.
+
+ @flags: Create flags. See open(2). O_EXCL is supported.
+
+ RETURN VALUES
+
+ NULL : Failure. @errno will be set with the type of failure.
+ Others : Pointer to the opened glfs_fd_t.
+
+ */
+
+glfs_fd_t *glfs_creat (glfs_t *fs, const char *path, int flags,
+ mode_t mode);
+
+int glfs_close (glfs_fd_t *fd);
+
+glfs_t *glfs_from_glfd (glfs_fd_t *fd);
+
+int glfs_set_xlator_option (glfs_t *fs, const char *xlator, const char *key,
+ const char *value);
+
+/*
+
+ glfs_io_cbk
+
+ The following is the function type definition of the callback
+ function pointer which has to be provided by the caller to the
+ *_async() versions of the IO calls.
+
+ The callback function is called on completion of the requested
+ IO, and the appropriate return value is returned in @ret.
+
+ In case of an error in completing the IO, @ret will be -1 and
+ @errno will be set with the appropriate error.
+
+ @ret will be same as the return value of the non _async() variant
+ of the particular call
+
+ @data is the same context pointer provided by the caller at the
+ time of issuing the async IO call. This can be used by the
+ caller to differentiate different instances of the async requests
+ in a common callback function.
+*/
+
+typedef void (*glfs_io_cbk) (glfs_fd_t *fd, ssize_t ret, void *data);
+
+// glfs_{read,write}[_async]
+
+ssize_t glfs_read (glfs_fd_t *fd, void *buf, size_t count, int flags);
+ssize_t glfs_write (glfs_fd_t *fd, const void *buf, size_t count, int flags);
+int glfs_read_async (glfs_fd_t *fd, void *buf, size_t count, int flags,
+ glfs_io_cbk fn, void *data);
+int glfs_write_async (glfs_fd_t *fd, const void *buf, size_t count, int flags,
+ glfs_io_cbk fn, void *data);
+
+// glfs_{read,write}v[_async]
+
+ssize_t glfs_readv (glfs_fd_t *fd, const struct iovec *iov, int iovcnt,
+ int flags);
+ssize_t glfs_writev (glfs_fd_t *fd, const struct iovec *iov, int iovcnt,
+ int flags);
+int glfs_readv_async (glfs_fd_t *fd, const struct iovec *iov, int count,
+ int flags, glfs_io_cbk fn, void *data);
+int glfs_writev_async (glfs_fd_t *fd, const struct iovec *iov, int count,
+ int flags, glfs_io_cbk fn, void *data);
+
+// glfs_p{read,write}[_async]
+
+ssize_t glfs_pread (glfs_fd_t *fd, void *buf, size_t count, off_t offset,
+ int flags);
+ssize_t glfs_pwrite (glfs_fd_t *fd, const void *buf, size_t count,
+ off_t offset, int flags);
+int glfs_pread_async (glfs_fd_t *fd, void *buf, size_t count, off_t offset,
+ int flags, glfs_io_cbk fn, void *data);
+int glfs_pwrite_async (glfs_fd_t *fd, const void *buf, int count, off_t offset,
+ int flags, glfs_io_cbk fn, void *data);
+
+// glfs_p{read,write}v[_async]
+
+ssize_t glfs_preadv (glfs_fd_t *fd, const struct iovec *iov, int iovcnt,
+ off_t offset, int flags);
+ssize_t glfs_pwritev (glfs_fd_t *fd, const struct iovec *iov, int iovcnt,
+ off_t offset, int flags);
+int glfs_preadv_async (glfs_fd_t *fd, const struct iovec *iov, int count,
+ off_t offset, int flags, glfs_io_cbk fn, void *data);
+int glfs_pwritev_async (glfs_fd_t *fd, const struct iovec *iov, int count,
+ off_t offset, int flags, glfs_io_cbk fn, void *data);
+
+
+off_t glfs_lseek (glfs_fd_t *fd, off_t offset, int whence);
+
+int glfs_truncate (glfs_t *fs, const char *path, off_t length);
+
+int glfs_ftruncate (glfs_fd_t *fd, off_t length);
+int glfs_ftruncate_async (glfs_fd_t *fd, off_t length, glfs_io_cbk fn,
+ void *data);
+
+int glfs_lstat (glfs_t *fs, const char *path, struct stat *buf);
+int glfs_stat (glfs_t *fs, const char *path, struct stat *buf);
+int glfs_fstat (glfs_fd_t *fd, struct stat *buf);
+
+int glfs_fsync (glfs_fd_t *fd);
+int glfs_fsync_async (glfs_fd_t *fd, glfs_io_cbk fn, void *data);
+
+int glfs_fdatasync (glfs_fd_t *fd);
+int glfs_fdatasync_async (glfs_fd_t *fd, glfs_io_cbk fn, void *data);
+
+int glfs_access (glfs_t *fs, const char *path, int mode);
+
+int glfs_symlink (glfs_t *fs, const char *oldpath, const char *newpath);
+
+int glfs_readlink (glfs_t *fs, const char *path, char *buf, size_t bufsiz);
+
+int glfs_mknod (glfs_t *fs, const char *path, mode_t mode, dev_t dev);
+
+int glfs_mkdir (glfs_t *fs, const char *path, mode_t mode);
+
+int glfs_unlink (glfs_t *fs, const char *path);
+
+int glfs_rmdir (glfs_t *fs, const char *path);
+
+int glfs_rename (glfs_t *fs, const char *oldpath, const char *newpath);
+
+int glfs_link (glfs_t *fs, const char *oldpath, const char *newpath);
+
+glfs_fd_t *glfs_opendir (glfs_t *fs, const char *path);
+
+/*
+ * @glfs_readdir_r and @glfs_readdirplus_r ARE thread safe AND re-entrant,
+ * but the interface has ambiguity about the size of @dirent to be allocated
+ * before calling the APIs. 512 byte buffer (for @dirent) is sufficient for
+ * all known systems which are tested againt glusterfs/gfapi, but may be
+ * insufficient in the future.
+ */
+
+int glfs_readdir_r (glfs_fd_t *fd, struct dirent *dirent,
+ struct dirent **result);
+
+int glfs_readdirplus_r (glfs_fd_t *fd, struct stat *stat, struct dirent *dirent,
+ struct dirent **result);
+
+/*
+ * @glfs_readdir and @glfs_readdirplus are NEITHER thread safe NOR re-entrant
+ * when called on the same directory handle. However they ARE thread safe
+ * AND re-entrant when called on different directory handles (which may be
+ * referring to the same directory too.)
+ */
+
+struct dirent *glfs_readdir (glfs_fd_t *fd);
+
+struct dirent *glfs_readdirplus (glfs_fd_t *fd, struct stat *stat);
+
+long glfs_telldir (glfs_fd_t *fd);
+
+void glfs_seekdir (glfs_fd_t *fd, long offset);
+
+int glfs_closedir (glfs_fd_t *fd);
+
+int glfs_statvfs (glfs_t *fs, const char *path, struct statvfs *buf);
+
+int glfs_chmod (glfs_t *fs, const char *path, mode_t mode);
+
+int glfs_fchmod (glfs_fd_t *fd, mode_t mode);
+
+int glfs_chown (glfs_t *fs, const char *path, uid_t uid, gid_t gid);
+
+int glfs_lchown (glfs_t *fs, const char *path, uid_t uid, gid_t gid);
+
+int glfs_fchown (glfs_fd_t *fd, uid_t uid, gid_t gid);
+
+int glfs_utimens (glfs_t *fs, const char *path, struct timespec times[2]);
+
+int glfs_lutimens (glfs_t *fs, const char *path, struct timespec times[2]);
+
+int glfs_futimens (glfs_fd_t *fd, struct timespec times[2]);
+
+ssize_t glfs_getxattr (glfs_t *fs, const char *path, const char *name,
+ void *value, size_t size);
+
+ssize_t glfs_lgetxattr (glfs_t *fs, const char *path, const char *name,
+ void *value, size_t size);
+
+ssize_t glfs_fgetxattr (glfs_fd_t *fd, const char *name,
+ void *value, size_t size);
+
+ssize_t glfs_listxattr (glfs_t *fs, const char *path, void *value, size_t size);
+
+ssize_t glfs_llistxattr (glfs_t *fs, const char *path, void *value,
+ size_t size);
+
+ssize_t glfs_flistxattr (glfs_fd_t *fd, void *value, size_t size);
+
+int glfs_setxattr (glfs_t *fs, const char *path, const char *name,
+ const void *value, size_t size, int flags);
+
+int glfs_lsetxattr (glfs_t *fs, const char *path, const char *name,
+ const void *value, size_t size, int flags);
+
+int glfs_fsetxattr (glfs_fd_t *fd, const char *name,
+ const void *value, size_t size, int flags);
+
+int glfs_removexattr (glfs_t *fs, const char *path, const char *name);
+
+int glfs_lremovexattr (glfs_t *fs, const char *path, const char *name);
+
+int glfs_fremovexattr (glfs_fd_t *fd, const char *name);
+
+int glfs_fallocate(glfs_fd_t *fd, int keep_size, off_t offset, size_t len);
+
+int glfs_discard(glfs_fd_t *fd, off_t offset, size_t len);
+
+
+int glfs_discard_async (glfs_fd_t *fd, off_t length, size_t lent,
+ glfs_io_cbk fn, void *data);
+
+int glfs_zerofill(glfs_fd_t *fd, off_t offset, size_t len);
+
+int glfs_zerofill_async (glfs_fd_t *fd, off_t length, size_t len,
+ glfs_io_cbk fn, void *data);
+
+char *glfs_getcwd (glfs_t *fs, char *buf, size_t size);
+
+int glfs_chdir (glfs_t *fs, const char *path);
+
+int glfs_fchdir (glfs_fd_t *fd);
+
+char *glfs_realpath (glfs_t *fs, const char *path, char *resolved_path);
+
+/*
+ * @cmd and @flock are as specified in man fcntl(2).
+ */
+int glfs_posix_lock (glfs_fd_t *fd, int cmd, struct flock *flock);
+
+glfs_fd_t *glfs_dup (glfs_fd_t *fd);
+
+__END_DECLS
+
+#endif /* !_GLFS_H */
generated by cgit (git 2.34.1) at 2025-12-28 22:47:54 +0000