diff options
Diffstat (limited to 'xlators/storage/posix')
| -rw-r--r-- | xlators/storage/posix/Makefile.am | 3 | ||||
| -rw-r--r-- | xlators/storage/posix/src/Makefile.am | 17 | ||||
| -rw-r--r-- | xlators/storage/posix/src/posix.c | 3715 | ||||
| -rw-r--r-- | xlators/storage/posix/src/posix.h | 110 | ||||
| -rw-r--r-- | xlators/storage/posix/src/xattr-cache.c | 521 | ||||
| -rw-r--r-- | xlators/storage/posix/src/xattr-cache.h | 65 |
6 files changed, 4431 insertions, 0 deletions
diff --git a/xlators/storage/posix/Makefile.am b/xlators/storage/posix/Makefile.am new file mode 100644 index 00000000000..d471a3f9243 --- /dev/null +++ b/xlators/storage/posix/Makefile.am @@ -0,0 +1,3 @@ +SUBDIRS = src + +CLEANFILES = diff --git a/xlators/storage/posix/src/Makefile.am b/xlators/storage/posix/src/Makefile.am new file mode 100644 index 00000000000..2859e09aa49 --- /dev/null +++ b/xlators/storage/posix/src/Makefile.am @@ -0,0 +1,17 @@ + +xlator_LTLIBRARIES = posix.la +xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/storage + +posix_la_LDFLAGS = -module -avoidversion + +posix_la_SOURCES = posix.c xattr-cache.c +posix_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la + +noinst_HEADERS = posix.h xattr-cache.h + +AM_CFLAGS = -fPIC -fno-strict-aliasing -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D$(GF_HOST_OS) -Wall \ + -I$(top_srcdir)/libglusterfs/src -shared -nostartfiles \ + $(GF_CFLAGS) + +CLEANFILES = + diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c new file mode 100644 index 00000000000..159f02ddeb4 --- /dev/null +++ b/xlators/storage/posix/src/posix.c @@ -0,0 +1,3715 @@ +/* + Copyright (c) 2006, 2007, 2008, 2009 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#define __XOPEN_SOURCE 500 + +#include <stdint.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <errno.h> +#include <ftw.h> + +#ifndef GF_BSD_HOST_OS +#include <alloca.h> +#endif /* GF_BSD_HOST_OS */ + +#include "glusterfs.h" +#include "dict.h" +#include "logging.h" +#include "posix.h" +#include "xlator.h" +#include "defaults.h" +#include "common-utils.h" +#include "compat-errno.h" +#include "compat.h" +#include "byte-order.h" + +#undef HAVE_SET_FSID +#ifdef HAVE_SET_FSID + +#define DECLARE_OLD_FS_ID_VAR uid_t old_fsuid; gid_t old_fsgid; + +#define SET_FS_ID(uid, gid) do { \ + old_fsuid = setfsuid (uid); \ + old_fsgid = setfsgid (gid); \ + } while (0) + +#define SET_TO_OLD_FS_ID() do { \ + setfsuid (old_fsuid); \ + setfsgid (old_fsgid); \ + } while (0) + +#else + +#define DECLARE_OLD_FS_ID_VAR +#define SET_FS_ID(uid, gid) +#define SET_TO_OLD_FS_ID() + +#endif + +typedef struct { + xlator_t *this; + const char *real_path; + dict_t *xattr; + struct stat *stbuf; + loc_t *loc; +} posix_xattr_filler_t; + +int +posix_forget (xlator_t *this, inode_t *inode) +{ + uint64_t tmp_cache = 0; + if (!inode_ctx_del (inode, this, &tmp_cache)) + dict_destroy ((dict_t *)(long)tmp_cache); + + return 0; +} + +static void +_posix_xattr_get_set (dict_t *xattr_req, + char *key, + data_t *data, + void *xattrargs) +{ + posix_xattr_filler_t *filler = xattrargs; + char *value = NULL; + ssize_t xattr_size = -1; + int ret = -1; + char *databuf = NULL; + int _fd = -1; + loc_t *loc = NULL; + ssize_t req_size = 0; + + + /* should size be put into the data_t ? */ + if (!strcmp (key, "glusterfs.content")) { + /* file content request */ + req_size = data_to_uint64 (data); + if (req_size >= filler->stbuf->st_size) { + _fd = open (filler->real_path, O_RDONLY); + + if (_fd == -1) { + gf_log (filler->this->name, GF_LOG_ERROR, + "opening file %s failed: %s", + filler->real_path, strerror (errno)); + goto err; + } + + databuf = calloc (1, filler->stbuf->st_size); + + if (!databuf) { + gf_log (filler->this->name, GF_LOG_ERROR, + "out of memory :("); + goto err; + } + + ret = read (_fd, databuf, filler->stbuf->st_size); + if (ret == -1) { + gf_log (filler->this->name, GF_LOG_ERROR, + "read on file %s failed: %s", + filler->real_path, strerror (errno)); + goto err; + } + + ret = close (_fd); + _fd = -1; + if (ret == -1) { + gf_log (filler->this->name, GF_LOG_ERROR, + "close on file %s failed: %s", + filler->real_path, strerror (errno)); + goto err; + } + + ret = dict_set_bin (filler->xattr, key, + databuf, filler->stbuf->st_size); + if (ret < 0) { + goto err; + } + + /* To avoid double free in cleanup below */ + databuf = NULL; + err: + if (_fd != -1) + close (_fd); + if (databuf) + FREE (databuf); + } + } else if (!strcmp (key, GLUSTERFS_OPEN_FD_COUNT)) { + loc = filler->loc; + if (!list_empty (&loc->inode->fd_list)) { + ret = dict_set_uint32 (filler->xattr, key, 1); + } else { + ret = dict_set_uint32 (filler->xattr, key, 0); + } + } else { + xattr_size = lgetxattr (filler->real_path, key, NULL, 0); + + if (xattr_size > 0) { + value = calloc (1, xattr_size + 1); + + lgetxattr (filler->real_path, key, value, xattr_size); + + value[xattr_size] = '\0'; + ret = dict_set_bin (filler->xattr, key, + value, xattr_size); + if (ret < 0) + gf_log (filler->this->name, GF_LOG_ERROR, + "dict set failed. path: %s, key: %s", + filler->real_path, key); + } + } +} + + +dict_t * +posix_lookup_xattr_fill (xlator_t *this, const char *real_path, loc_t *loc, + dict_t *xattr_req, struct stat *buf) +{ + dict_t *xattr = NULL; + posix_xattr_filler_t filler = {0, }; + + xattr = get_new_dict(); + if (!xattr) { + gf_log (this->name, GF_LOG_ERROR, + "memory allocation failed :("); + goto out; + } + + filler.this = this; + filler.real_path = real_path; + filler.xattr = xattr; + filler.stbuf = buf; + filler.loc = loc; + + dict_foreach (xattr_req, _posix_xattr_get_set, &filler); +out: + return xattr; +} + + +int32_t +posix_lookup (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *xattr_req) +{ + struct stat buf = {0, }; + char * real_path = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + dict_t * xattr = NULL; + + struct posix_private *priv = NULL; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (loc->path, out); + + MAKE_REAL_PATH (real_path, this, loc->path); + + priv = this->private; + + op_ret = lstat (real_path, &buf); + op_errno = errno; + + if (op_ret == -1) { + if (op_errno != ENOENT) { + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s failed: %s", + loc->path, strerror (op_errno)); + } + goto out; + } + + /* Make sure we don't access another mountpoint inside export dir. + * It may cause inode number to repeat from single export point, + * which leads to severe problems.. + */ + if (priv->base_stdev != buf.st_dev) { + op_errno = ENOENT; + gf_log (this->name, GF_LOG_WARNING, + "%s: different mountpoint/device, returning " + "ENOENT", loc->path); + goto out; + } + + if (xattr_req && (op_ret == 0)) { + xattr = posix_lookup_xattr_fill (this, real_path, loc, + xattr_req, &buf); + } + + op_ret = 0; +out: + frame->root->rsp_refs = NULL; + + if (xattr) + dict_ref (xattr); + + STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &buf, xattr); + + if (xattr) + dict_unref (xattr); + + return 0; +} + + +int32_t +posix_stat (call_frame_t *frame, + xlator_t *this, + loc_t *loc) +{ + struct stat buf = {0,}; + char * real_path = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = lstat (real_path, &buf); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID(); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + + return 0; +} + +int32_t +posix_opendir (call_frame_t *frame, xlator_t *this, + loc_t *loc, fd_t *fd) +{ + char * real_path = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + DIR * dir = NULL; + struct posix_fd * pfd = NULL; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (loc->path, out); + VALIDATE_OR_GOTO (fd, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + dir = opendir (real_path); + + if (dir == NULL) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "opendir failed on %s (%s)", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = dirfd (dir); + if (op_ret < 0) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "dirfd() failed on %s (%s)", + loc->path, strerror (op_errno)); + goto out; + } + + pfd = CALLOC (1, sizeof (*fd)); + if (!pfd) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + pfd->dir = dir; + pfd->fd = dirfd (dir); + pfd->path = strdup (real_path); + if (!pfd->path) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + fd_ctx_set (fd, this, (uint64_t)(long)pfd); + + frame->root->rsp_refs = NULL; + + op_ret = 0; + + out: + if (op_ret == -1) { + if (dir) { + closedir (dir); + dir = NULL; + } + if (pfd) { + if (pfd->path) + FREE (pfd->path); + FREE (pfd); + pfd = NULL; + } + } + + SET_TO_OLD_FS_ID (); + STACK_UNWIND (frame, op_ret, op_errno, fd); + return 0; +} + + +int32_t +posix_getdents (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t off, int32_t flag) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + dir_entry_t entries = {0, }; + dir_entry_t * tmp = NULL; + DIR * dir = NULL; + struct dirent * dirent = NULL; + int real_path_len = -1; + int entry_path_len = -1; + char * entry_path = NULL; + int count = 0; + struct posix_fd * pfd = NULL; + uint64_t tmp_pfd = 0; + struct stat buf = {0,}; + int ret = -1; + char tmp_real_path[ZR_PATH_MAX]; + char linkpath[ZR_PATH_MAX]; + + DECLARE_OLD_FS_ID_VAR ; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "fd %p does not have context in %s", + fd, this->name); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + if (!pfd->path) { + op_errno = EBADFD; + gf_log (this->name, GF_LOG_ERROR, + "pfd does not have path set (possibly file " + "fd, fd=%p)", fd); + goto out; + } + + real_path = pfd->path; + real_path_len = strlen (real_path); + + entry_path_len = real_path_len + NAME_MAX; + entry_path = CALLOC (1, entry_path_len); + + if (!entry_path) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + strncpy (entry_path, real_path, entry_path_len); + entry_path[real_path_len] = '/'; + + dir = pfd->dir; + + if (!dir) { + op_errno = EBADFD; + gf_log (this->name, GF_LOG_ERROR, + "pfd does not have dir set (possibly file fd, " + "fd=%p, path=`%s'", + fd, real_path); + goto out; + } + + /* TODO: check for all the type of flag, and behave appropriately */ + + while ((dirent = readdir (dir))) { + if (!dirent) + break; + + /* This helps in self-heal, when only directories + needs to be replicated */ + + /* This is to reduce the network traffic, in case only + directory is needed from posix */ + + strncpy (tmp_real_path, real_path, ZR_PATH_MAX); + strncat (tmp_real_path, "/", + ZR_PATH_MAX - strlen (tmp_real_path)); + + strncat (tmp_real_path, dirent->d_name, + ZR_PATH_MAX - strlen (tmp_real_path)); + ret = lstat (tmp_real_path, &buf); + + if ((flag == GF_GET_DIR_ONLY) + && (ret != -1 && !S_ISDIR(buf.st_mode))) { + continue; + } + + tmp = CALLOC (1, sizeof (*tmp)); + + if (!tmp) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + tmp->name = strdup (dirent->d_name); + if (!tmp->name) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + if (entry_path_len < + (real_path_len + 1 + strlen (tmp->name) + 1)) { + entry_path_len = (real_path_len + + strlen (tmp->name) + 1024); + + entry_path = realloc (entry_path, entry_path_len); + } + + strcpy (&entry_path[real_path_len+1], tmp->name); + + ret = lstat (entry_path, &tmp->buf); + + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lstat on %s failed: %s", + entry_path, strerror (op_errno)); + goto out; + } + + if (S_ISLNK(tmp->buf.st_mode)) { + + ret = readlink (entry_path, linkpath, ZR_PATH_MAX); + if (ret != -1) { + linkpath[ret] = '\0'; + tmp->link = strdup (linkpath); + } + } else { + tmp->link = ""; + } + + count++; + + tmp->next = entries.next; + entries.next = tmp; + + /* if size is 0, count can never be = size, so entire + dir is read */ + if (count == size) + break; + } + + FREE (entry_path); + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + if (op_ret == -1) { + if (entry_path) + FREE (entry_path); + } + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &entries, count); + + if (op_ret == 0) { + while (entries.next) { + tmp = entries.next; + entries.next = entries.next->next; + FREE (tmp->name); + FREE (tmp); + } + } + + return 0; +} + + +int32_t +posix_releasedir (xlator_t *this, + fd_t *fd) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + struct posix_fd * pfd = NULL; + uint64_t tmp_pfd = 0; + int ret = 0; + + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_del (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "pfd from fd=%p is NULL", fd); + goto out; + } + + pfd = (struct posix_fd *)(long)tmp_pfd; + if (!pfd->dir) { + op_errno = EINVAL; + gf_log (this->name, GF_LOG_ERROR, + "pfd->dir is NULL for fd=%p path=%s", + fd, pfd->path ? pfd->path : "<NULL>"); + goto out; + } + + ret = closedir (pfd->dir); + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "closedir on %p failed", pfd->dir); + goto out; + } + pfd->dir = NULL; + + if (!pfd->path) { + op_errno = EBADFD; + gf_log (this->name, GF_LOG_ERROR, + "pfd->path was NULL. fd=%p pfd=%p", + fd, pfd); + goto out; + } + + op_ret = 0; + + out: + if (pfd) { + if (pfd->path) + FREE (pfd->path); + FREE (pfd); + } + + return 0; +} + + +int32_t +posix_readlink (call_frame_t *frame, xlator_t *this, + loc_t *loc, size_t size) +{ + char * dest = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + + dest = alloca (size + 1); + + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = readlink (real_path, dest, size); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "readlink on %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + dest[op_ret] = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + + STACK_UNWIND (frame, op_ret, op_errno, dest); + + return 0; +} + +int32_t +posix_mknod (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode, dev_t dev) +{ + int tmp_fd = 0; + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = { 0, }; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = mknod (real_path, mode, dev); + + if (op_ret == -1) { + op_errno = errno; + if ((op_errno == EINVAL) && S_ISREG (mode)) { + /* Over Darwin, mknod with (S_IFREG|mode) + doesn't work */ + tmp_fd = creat (real_path, mode); + if (tmp_fd == -1) + goto out; + close (tmp_fd); + } else { + + gf_log (this->name, GF_LOG_ERROR, + "mknod on %s: %s", loc->path, + strerror (op_errno)); + goto out; + } + } + +#ifndef HAVE_SET_FSID + op_ret = lchown (real_path, frame->root->uid, frame->root->gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lchown on %s: %s", loc->path, strerror (op_errno)); + goto out; + } +#endif + + op_ret = lstat (real_path, &stbuf); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "mknod on %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); + + return 0; +} + +int32_t +posix_mkdir (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + struct stat stbuf = {0, }; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = mkdir (real_path, mode); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "mkdir of %s: %s", loc->path, strerror (op_errno)); + goto out; + } + +#ifndef HAVE_SET_FSID + op_ret = chown (real_path, frame->root->uid, frame->root->gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "chown on %s: %s", loc->path, strerror (op_errno)); + goto out; + } +#endif + + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lstat on %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); + + return 0; +} + + +int32_t +posix_unlink (call_frame_t *frame, xlator_t *this, + loc_t *loc) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + + xattr_cache_handle_t handle = {{0,}, 0}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + loc_copy (&handle.loc, loc); + { + posix_xattr_cache_flush (this, &handle); + } + loc_wipe (&handle.loc); + + op_ret = unlink (real_path); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "unlink of %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + +int32_t +posix_rmdir (call_frame_t *frame, xlator_t *this, + loc_t *loc) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + + xattr_cache_handle_t handle = {{0,}, 0}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + loc_copy (&handle.loc, loc); + { + posix_xattr_cache_flush (this, &handle); + } + loc_wipe (&handle.loc); + + op_ret = rmdir (real_path); + op_errno = errno; + + if (op_errno == EEXIST) + /* Solaris sets errno = EEXIST instead of ENOTEMPTY */ + op_errno = ENOTEMPTY; + + if (op_ret == -1 && op_errno != ENOTEMPTY) { + gf_log (this->name, GF_LOG_WARNING, + "rmdir of %s: %s", loc->path, strerror (op_errno)); + goto out; + } + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + +int32_t +posix_symlink (call_frame_t *frame, xlator_t *this, + const char *linkname, loc_t *loc) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = { 0, }; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (linkname, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = symlink (linkname, real_path); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "symlink of %s --> %s: %s", + loc->path, linkname, strerror (op_errno)); + goto out; + } + +#ifndef HAVE_SET_FSID + op_ret = lchown (real_path, frame->root->uid, frame->root->gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lchown failed on %s: %s", + loc->path, strerror (op_errno)); + goto out; + } +#endif + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat failed on %s: %s", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, loc->inode, &stbuf); + + return 0; +} + + +int +posix_rename (call_frame_t *frame, xlator_t *this, + loc_t *oldloc, loc_t *newloc) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_oldpath = NULL; + char * real_newpath = NULL; + struct stat stbuf = {0, }; + + xattr_cache_handle_t handle = {{0,}, 0}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (oldloc, out); + VALIDATE_OR_GOTO (newloc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_oldpath, this, oldloc->path); + MAKE_REAL_PATH (real_newpath, this, newloc->path); + + loc_copy (&handle.loc, oldloc); + { + posix_xattr_cache_flush (this, &handle); + } + loc_wipe (&handle.loc); + + op_ret = rename (real_oldpath, real_newpath); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, + (op_errno == ENOTEMPTY ? GF_LOG_DEBUG : GF_LOG_ERROR), + "rename of %s to %s failed: %s", + oldloc->path, newloc->path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_newpath, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s failed: %s", + real_newpath, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + + +int +posix_link (call_frame_t *frame, xlator_t *this, + loc_t *oldloc, loc_t *newloc) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_oldpath = 0; + char * real_newpath = 0; + struct stat stbuf = {0, }; + + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (oldloc, out); + VALIDATE_OR_GOTO (newloc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_oldpath, this, oldloc->path); + MAKE_REAL_PATH (real_newpath, this, newloc->path); + + op_ret = link (real_oldpath, real_newpath); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "link %s to %s failed: %s", + oldloc->path, newloc->path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_newpath, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s failed: %s", + real_newpath, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, oldloc->inode, &stbuf); + + return 0; +} + + +int +posix_chmod (call_frame_t *frame, xlator_t *this, + loc_t *loc, mode_t mode) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = {0,}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + if (S_ISLNK (loc->inode->st_mode)) { + /* chmod on a link should always succeed */ + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lstat on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } + op_ret = 0; + goto out; + } + + op_ret = lchmod (real_path, mode); + if ((op_ret == -1) && (errno == ENOSYS)) { + gf_log (this->name, GF_LOG_DEBUG, + "lchmod not implemented, falling back to chmod"); + op_ret = chmod (real_path, mode); + } + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "chmod on %s failed: %s", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "lstat on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + + +int +posix_chown (call_frame_t *frame, xlator_t *this, + loc_t *loc, uid_t uid, gid_t gid) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = {0,}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = lchown (real_path, uid, gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lchown on %s failed: %s", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + + +int32_t +posix_truncate (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + off_t offset) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = {0,}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = truncate (real_path, offset); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "truncate on %s failed: %s", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "lstat on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + + +int +posix_utimens (call_frame_t *frame, xlator_t *this, + loc_t *loc, struct timespec ts[2]) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = 0; + struct stat stbuf = {0,}; + struct timeval tv[2] = {{0,},{0,}}; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + tv[0].tv_sec = ts[0].tv_sec; + tv[0].tv_usec = ts[0].tv_nsec / 1000; + tv[1].tv_sec = ts[1].tv_sec; + tv[1].tv_usec = ts[1].tv_nsec / 1000; + + op_ret = lutimes (real_path, tv); + if ((op_ret == -1) && (errno == ENOSYS)) { + op_ret = utimes (real_path, tv); + } + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "utimes on %s: %s", real_path, strerror (op_errno)); + goto out; + } + + op_ret = lstat (real_path, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "lstat on %s: %s", real_path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + +int32_t +posix_create (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flags, mode_t mode, + fd_t *fd) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int32_t _fd = -1; + int _flags = 0; + char * real_path = NULL; + struct stat stbuf = {0, }; + struct posix_fd * pfd = NULL; + struct posix_private * priv = NULL; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (fd, out); + + priv = this->private; + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + if (!flags) { + _flags = O_CREAT | O_RDWR | O_EXCL; + } + else { + _flags = flags | O_CREAT; + } + + if (priv->o_direct) + flags |= O_DIRECT; + + _fd = open (real_path, _flags, mode); + + if (_fd == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "open on %s: %s", loc->path, strerror (op_errno)); + goto out; + } + +#ifndef HAVE_SET_FSID + op_ret = chown (real_path, frame->root->uid, frame->root->gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "chown on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } +#endif + + op_ret = fstat (_fd, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "fstat on %d failed: %s", _fd, strerror (op_errno)); + goto out; + } + + op_ret = -1; + pfd = CALLOC (1, sizeof (*pfd)); + + if (!pfd) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + close (_fd); + goto out; + } + + pfd->flags = flags; + pfd->fd = _fd; + + fd_ctx_set (fd, this, (uint64_t)(long)pfd); + + ((struct posix_private *)this->private)->stats.nr_files++; + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, fd, loc->inode, &stbuf); + + return 0; +} + +int32_t +posix_open (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flags, fd_t *fd) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + int32_t _fd = -1; + struct posix_fd * pfd = NULL; + struct posix_private * priv = NULL; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (this->private, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (fd, out); + + priv = this->private; + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + if (priv->o_direct) + flags |= O_DIRECT; + + _fd = open (real_path, flags, 0); + if (_fd == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "open on %s: %s", real_path, strerror (op_errno)); + goto out; + } + + pfd = CALLOC (1, sizeof (*pfd)); + + if (!pfd) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + pfd->flags = flags; + pfd->fd = _fd; + + fd_ctx_set (fd, this, (uint64_t)(long)pfd); + + ((struct posix_private *)this->private)->stats.nr_files++; + +#ifndef HAVE_SET_FSID + if (flags & O_CREAT) { + op_ret = chown (real_path, frame->root->uid, frame->root->gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "chown on %s failed: %s", + real_path, strerror (op_errno)); + goto out; + } + } +#endif + + op_ret = 0; + + out: + if (op_ret == -1) { + if (_fd != -1) { + close (_fd); + _fd = -1; + } + } + + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, fd); + + return 0; +} + +#define ALIGN_BUF(ptr,bound) ((void *)((unsigned long)(ptr + bound - 1) & \ + (unsigned long)(~(bound - 1)))) + +int +posix_readv (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t offset) +{ + uint64_t tmp_pfd = 0; + int32_t op_ret = -1; + int32_t op_errno = 0; + char * buf = NULL; + char * alloc_buf = NULL; + int _fd = -1; + struct posix_private * priv = NULL; + dict_t * reply_dict = NULL; + struct iovec vec = {0,}; + struct posix_fd * pfd = NULL; + struct stat stbuf = {0,}; + int align = 1; + int ret = -1; + int dict_ret = -1; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL from fd=%p", fd); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + if (!size) { + op_errno = EINVAL; + gf_log (this->name, GF_LOG_ERROR, "size == 0"); + goto out; + } + + if (pfd->flags & O_DIRECT) { + align = 4096; /* align to page boundary */ + } + + alloc_buf = MALLOC (1 * (size + align)); + if (!alloc_buf) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + /* page aligned buffer */ + buf = ALIGN_BUF (alloc_buf, align); + + _fd = pfd->fd; + + op_ret = lseek (_fd, offset, SEEK_SET); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lseek(%"PRId64") failed: %s", + offset, strerror (op_errno)); + goto out; + } + + op_ret = read (_fd, buf, size); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "read failed: %s", strerror (op_errno)); + goto out; + } + + priv->read_value += size; + priv->interval_read += size; + + vec.iov_base = buf; + vec.iov_len = op_ret; + + op_ret = -1; + reply_dict = get_new_dict (); + if (!reply_dict) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + dict_ref (reply_dict); + + dict_ret = dict_set_ptr (reply_dict, NULL, alloc_buf); + if (dict_ret < 0) { + op_errno = -dict_ret; + gf_log (this->name, GF_LOG_ERROR, "could not dict_set: (%s)", + strerror (op_errno)); + goto out; + } + + /* + * readv successful, and we need to get the stat of the file + * we read from + */ + + op_ret = fstat (_fd, &stbuf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "fstat failed: %s", strerror (op_errno)); + goto out; + } + + op_ret = 0; + out: + if (op_ret == -1) { + frame->root->rsp_refs = NULL; + + if (reply_dict) { + dict_unref (reply_dict); + reply_dict = NULL; + } + + if ((alloc_buf != NULL) && (dict_ret != -1)) + FREE (alloc_buf); + } + + if (reply_dict) + frame->root->rsp_refs = reply_dict; + + STACK_UNWIND (frame, op_ret, op_errno, &vec, 1, &stbuf); + + if (reply_dict) + dict_unref (reply_dict); + + return 0; +} + + +int32_t +posix_writev (call_frame_t *frame, xlator_t *this, + fd_t *fd, struct iovec *vector, int32_t count, off_t offset) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct posix_private * priv = NULL; + struct posix_fd * pfd = NULL; + struct stat stbuf = {0,}; + int ret = -1; + + int idx = 0; + int align = 4096; + int max_buf_size = 0; + int retval = 0; + char * buf = NULL; + char * alloc_buf = NULL; + uint64_t tmp_pfd = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + VALIDATE_OR_GOTO (vector, out); + VALIDATE_OR_GOTO (this->private, out); + + priv = this->private; + + VALIDATE_OR_GOTO (priv, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL from fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = lseek (_fd, offset, SEEK_SET); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "lseek(%"PRId64") failed: %s", + offset, strerror (op_errno)); + goto out; + } + + /* Check for the O_DIRECT flag during open() */ + if (pfd->flags & O_DIRECT) { + /* This is O_DIRECT'd file */ + op_ret = -1; + for (idx = 0; idx < count; idx++) { + if (max_buf_size < vector[idx].iov_len) + max_buf_size = vector[idx].iov_len; + } + + alloc_buf = MALLOC (1 * (max_buf_size + align)); + if (!alloc_buf) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + goto out; + } + + for (idx = 0; idx < count; idx++) { + /* page aligned buffer */ + buf = ALIGN_BUF (alloc_buf, align); + + memcpy (buf, vector[idx].iov_base, + vector[idx].iov_len); + + /* not sure whether writev works on O_DIRECT'd fd */ + retval = write (_fd, buf, vector[idx].iov_len); + + if (retval == -1) { + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "O_DIRECT enabled: %s", + strerror (op_errno)); + goto out; + } + + break; + } + if (op_ret == -1) + op_ret = 0; + op_ret += retval; + } + + } else /* if (O_DIRECT) */ { + + /* This is not O_DIRECT'd fd */ + op_ret = writev (_fd, vector, count); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "writev failed: %s", + strerror (op_errno)); + goto out; + } + } + + priv->write_value += op_ret; + priv->interval_write += op_ret; + + if (op_ret >= 0) { + /* wiretv successful, we also need to get the stat of + * the file we wrote to + */ + ret = fstat (_fd, &stbuf); + if (ret == -1) { + op_ret = -1; + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "fstat failed: %s", + strerror (op_errno)); + goto out; + } + } + + out: + if (alloc_buf) { + FREE (alloc_buf); + } + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &stbuf); + + return 0; +} + + +int32_t +posix_statfs (call_frame_t *frame, xlator_t *this, + loc_t *loc) +{ + char * real_path = NULL; + int32_t op_ret = -1; + int32_t op_errno = 0; + struct statvfs buf = {0, }; + struct posix_private * priv = NULL; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (this->private, out); + + MAKE_REAL_PATH (real_path, this, loc->path); + + priv = this->private; + + op_ret = statvfs (real_path, &buf); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "statvfs failed: %s", + strerror (op_errno)); + goto out; + } + + if (!priv->export_statfs) { + buf.f_blocks = 0; + buf.f_bfree = 0; + buf.f_bavail = 0; + buf.f_files = 0; + buf.f_ffree = 0; + buf.f_favail = 0; + } + + op_ret = 0; + + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + return 0; +} + + +int32_t +posix_flush (call_frame_t *frame, xlator_t *this, + fd_t *fd) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL on fd=%p", fd); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + /* do nothing */ + posix_xattr_cache_flush_all (this); + + op_ret = 0; + + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + + +int32_t +posix_release (xlator_t *this, + fd_t *fd) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct posix_private * priv = NULL; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + xattr_cache_handle_t handle = {{0,},0}; + + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + priv = this->private; + + priv->stats.nr_files--; + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL from fd=%p", fd); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + handle.fd = fd; + posix_xattr_cache_flush (this, &handle); + + _fd = pfd->fd; + + op_ret = close (_fd); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "close(): %s", strerror (op_errno)); + goto out; + } + + if (pfd->dir) { + op_ret = -1; + op_errno = EBADF; + gf_log (this->name, GF_LOG_ERROR, + "pfd->dir is %p (not NULL) for file fd=%p", + pfd->dir, fd); + goto out; + } + + op_ret = 0; + + out: + if (pfd) + FREE (pfd); + + return 0; +} + + +int32_t +posix_fsync (call_frame_t *frame, xlator_t *this, + fd_t *fd, int32_t datasync) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + +#ifdef GF_DARWIN_HOST_OS + /* Always return success in case of fsync in MAC OS X */ + op_ret = 0; + goto out; +#endif + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, "pfd not found in fd's ctx"); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + if (datasync) { + ; +#ifdef HAVE_FDATASYNC + op_ret = fdatasync (_fd); +#endif + } else { + op_ret = fsync (_fd); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "fsync: %s", + strerror (op_errno)); + } + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + +static int gf_posix_xattr_enotsup_log; + +int +set_file_contents (xlator_t *this, char *real_path, + data_pair_t *trav, int flags) +{ + char * key = NULL; + char real_filepath[ZR_PATH_MAX] = {0,}; + int32_t file_fd = -1; + int op_ret = 0; + int ret = -1; + + key = &(trav->key[15]); + sprintf (real_filepath, "%s/%s", real_path, key); + + if (flags & XATTR_REPLACE) { + /* if file exists, replace it + * else, error out */ + file_fd = open (real_filepath, O_TRUNC|O_WRONLY); + + if (file_fd == -1) { + goto create; + } + + if (trav->value->len) { + ret = write (file_fd, trav->value->data, + trav->value->len); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "write failed while doing setxattr " + "for key %s on path %s: %s", + key, real_filepath, strerror (errno)); + goto out; + } + + ret = close (file_fd); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "close failed on %s: %s", + real_filepath, strerror (errno)); + goto out; + } + } + + create: /* we know file doesn't exist, create it */ + + file_fd = open (real_filepath, O_CREAT|O_WRONLY, 0644); + + if (file_fd == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "failed to open file %s with O_CREAT: %s", + key, strerror (errno)); + goto out; + } + + ret = write (file_fd, trav->value->data, trav->value->len); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "write failed on %s while setxattr with " + "key %s: %s", + real_filepath, key, strerror (errno)); + goto out; + } + + ret = close (file_fd); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "close failed on %s while setxattr with " + "key %s: %s", + real_filepath, key, strerror (errno)); + goto out; + } + } + + out: + return op_ret; +} + +int +handle_pair (xlator_t *this, char *real_path, + data_pair_t *trav, int flags) +{ + int sys_ret = -1; + int ret = 0; + + if (ZR_FILE_CONTENT_REQUEST(trav->key)) { + ret = set_file_contents (this, real_path, trav, flags); + } else { + sys_ret = lsetxattr (real_path, trav->key, trav->value->data, + trav->value->len, flags); + + if (sys_ret < 0) { + if (errno == ENOTSUP) { + GF_LOG_OCCASIONALLY(gf_posix_xattr_enotsup_log, + this->name,GF_LOG_WARNING, + "Extended attributes not " + "supported"); + } else if (errno == ENOENT) { + gf_log (this->name, GF_LOG_DEBUG, + "setxattr on %s failed: %s", real_path, + strerror (errno)); + } else { + +#ifdef GF_DARWIN_HOST_OS + gf_log (this->name, + ((errno == EINVAL) ? + GF_LOG_DEBUG : GF_LOG_WARNING), + "%s: key:%s error:%s", + real_path, trav->key, + strerror (errno)); +#else /* ! DARWIN */ + gf_log (this->name, GF_LOG_WARNING, + "%s: key:%s error:%s", + real_path, trav->key, + strerror (errno)); +#endif /* DARWIN */ + } + + ret = -errno; + goto out; + } + } + out: + return ret; +} + +int32_t +posix_setxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, dict_t *dict, int flags) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + data_pair_t * trav = NULL; + int ret = -1; + + DECLARE_OLD_FS_ID_VAR; + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + VALIDATE_OR_GOTO (dict, out); + + MAKE_REAL_PATH (real_path, this, loc->path); + + trav = dict->members_list; + + while (trav) { + ret = handle_pair (this, real_path, trav, flags); + if (ret < 0) { + op_errno = -ret; + goto out; + } + trav = trav->next; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + +int +get_file_contents (xlator_t *this, char *real_path, + const char *name, char **contents) +{ + char real_filepath[ZR_PATH_MAX] = {0,}; + char * key = NULL; + int32_t file_fd = -1; + struct stat stbuf = {0,}; + int op_ret = 0; + int ret = -1; + + key = (char *) &(name[15]); + sprintf (real_filepath, "%s/%s", real_path, key); + + op_ret = lstat (real_filepath, &stbuf); + if (op_ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, "lstat failed on %s: %s", + real_filepath, strerror (errno)); + goto out; + } + + file_fd = open (real_filepath, O_RDONLY); + + if (file_fd == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, "open failed on %s: %s", + real_filepath, strerror (errno)); + goto out; + } + + *contents = CALLOC (stbuf.st_size + 1, sizeof(char)); + + if (! *contents) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, "out of memory :("); + goto out; + } + + ret = read (file_fd, *contents, stbuf.st_size); + if (ret <= 0) { + op_ret = -1; + gf_log (this->name, GF_LOG_ERROR, "read on %s failed", + real_filepath); + goto out; + } + + *contents[stbuf.st_size] = '\0'; + + op_ret = close (file_fd); + file_fd = -1; + if (op_ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, "close on %s failed: %s", + real_filepath, strerror (errno)); + goto out; + } + + out: + if (op_ret < 0) { + if (*contents) + FREE (*contents); + if (file_fd != -1) + close (file_fd); + } + + return op_ret; +} + +/** + * posix_getxattr - this function returns a dictionary with all the + * key:value pair present as xattr. used for + * both 'listxattr' and 'getxattr'. + */ +int32_t +posix_getxattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name) +{ + int32_t op_ret = -1; + int32_t op_errno = ENOENT; + int32_t list_offset = 0; + size_t size = 0; + size_t remaining_size = 0; + char key[1024] = {0,}; + char * value = NULL; + char * list = NULL; + char * real_path = NULL; + dict_t * dict = NULL; + char * file_contents = NULL; + int ret = -1; + + DECLARE_OLD_FS_ID_VAR; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + SET_FS_ID (frame->root->uid, frame->root->gid); + MAKE_REAL_PATH (real_path, this, loc->path); + + if (loc->inode && S_ISDIR(loc->inode->st_mode) && name && + ZR_FILE_CONTENT_REQUEST(name)) { + ret = get_file_contents (this, real_path, name, + &file_contents); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "getting file contents failed: %s", + strerror (op_errno)); + goto out; + } + } + + /* Get the total size */ + dict = get_new_dict (); + if (!dict) { + gf_log (this->name, GF_LOG_ERROR, "out of memory :("); + goto out; + } + + size = llistxattr (real_path, NULL, 0); + if (size == -1) { + op_errno = errno; + if ((errno == ENOTSUP) || (errno == ENOSYS)) { + GF_LOG_OCCASIONALLY (gf_posix_xattr_enotsup_log, + this->name, GF_LOG_WARNING, + "Extended attributes not " + "supported."); + } + else { + gf_log (this->name, GF_LOG_ERROR, + "listxattr failed on %s: %s", + real_path, strerror (op_errno)); + } + goto out; + } + + if (size == 0) + goto done; + + list = alloca (size + 1); + if (!list) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "out of memory :("); + goto out; + } + + size = llistxattr (real_path, list, size); + + remaining_size = size; + list_offset = 0; + while (remaining_size > 0) { + if(*(list + list_offset) == '\0') + break; + + strcpy (key, list + list_offset); + op_ret = lgetxattr (real_path, key, NULL, 0); + if (op_ret == -1) + break; + + value = CALLOC (op_ret + 1, sizeof(char)); + if (!value) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "out of memory :("); + goto out; + } + + op_ret = lgetxattr (real_path, key, value, op_ret); + if (op_ret == -1) + break; + + value [op_ret] = '\0'; + dict_set (dict, key, data_from_dynptr (value, op_ret)); + remaining_size -= strlen (key) + 1; + list_offset += strlen (key) + 1; + + } /* while (remaining_size > 0) */ + + done: + op_ret = size; + + if (dict) { + dict_ref (dict); + } + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, dict); + + if (dict) + dict_unref (dict); + + return 0; +} + +int32_t +posix_removexattr (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *name) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + + DECLARE_OLD_FS_ID_VAR; + + MAKE_REAL_PATH (real_path, this, loc->path); + + SET_FS_ID (frame->root->uid, frame->root->gid); + + op_ret = lremovexattr (real_path, name); + + if (op_ret == -1) { + op_errno = errno; + if (op_errno != ENOATTR && op_errno != EPERM) + gf_log (this->name, GF_LOG_WARNING, + "removexattr on %s: %s", loc->path, + strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + return 0; +} + + +int32_t +posix_fsyncdir (call_frame_t *frame, xlator_t *this, + fd_t *fd, int datasync) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + struct posix_fd * pfd = NULL; + int _fd = -1; + int ret = -1; + uint64_t tmp_pfd = 0; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL, fd=%p", fd); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = 0; + + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + + return 0; +} + + +void +posix_print_xattr (dict_t *this, + char *key, + data_t *value, + void *data) +{ + gf_log ("posix", GF_LOG_TRACE, + "(key/val) = (%s/%d)", key, data_to_int32 (value)); +} + + +/** + * add_array - add two arrays of 32-bit numbers (stored in network byte order) + * dest = dest + src + * @count: number of 32-bit numbers + * FIXME: handle overflow + */ + +static void +__add_array (int32_t *dest, int32_t *src, int count) +{ + int i = 0; + for (i = 0; i < count; i++) { + dest[i] = hton32 (ntoh32 (dest[i]) + ntoh32 (src[i])); + } +} + + +/** + * xattrop - xattr operations - for internal use by GlusterFS + * @optype: ADD_ARRAY: + * dict should contain: + * "key" ==> array of 32-bit numbers + */ + + +int +posix_xattrop_common (call_frame_t *frame, xlator_t *this, + xattr_cache_handle_t *handle, + gf_xattrop_flags_t optype, dict_t *xattr) +{ + int32_t *array = NULL; + + int ret = 0; + int count = 0; + + int op_ret = 0; + int op_errno = 0; + + data_pair_t *trav = NULL; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (xattr, out); + VALIDATE_OR_GOTO (this, out); + + trav = xattr->members_list; + + while (trav) { + count = trav->value->len / sizeof (int32_t); + array = CALLOC (count, sizeof (int32_t)); + + ret = posix_xattr_cache_read (this, handle, trav->key, + array, trav->value->len); + + switch (optype) { + + case GF_XATTROP_ADD_ARRAY: + __add_array (array, (int32_t *) trav->value->data, + trav->value->len / 4); + break; + + default: + gf_log (this->name, GF_LOG_ERROR, + "unknown xattrop type %d", + optype); + + op_ret = -1; + op_errno = EINVAL; + goto out; + } + + ret = posix_xattr_cache_write (this, handle, trav->key, + array, trav->value->len); + + ret = dict_set_bin (xattr, trav->key, array, + trav->value->len); + + if (ret != 0) { + gf_log (this->name, GF_LOG_ERROR, + "key=%s (%s)", + trav->key, strerror (-ret)); + op_ret = -1; + op_errno = EINVAL; + goto out; + } + + trav = trav->next; + array = NULL; + } + +out: + if (array) + FREE (array); + + STACK_UNWIND (frame, op_ret, op_errno, xattr); + return 0; +} + + +int +posix_xattrop (call_frame_t *frame, xlator_t *this, + loc_t *loc, gf_xattrop_flags_t optype, dict_t *xattr) +{ + xattr_cache_handle_t handle = {{0,}, 0}; + int ret = -1; + + loc_copy (&handle.loc, loc); + { + ret = posix_xattrop_common (frame, this, &handle, optype, xattr); + } + loc_wipe (&handle.loc); + + return ret; +} + + +int +posix_fxattrop (call_frame_t *frame, xlator_t *this, + fd_t *fd, gf_xattrop_flags_t optype, dict_t *xattr) +{ + int ret = -1; + xattr_cache_handle_t handle = {{0,}, 0}; + + handle.fd = fd; + + ret = posix_xattrop_common (frame, this, &handle, optype, xattr); + + return ret; +} + + +int +posix_access (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t mask) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + char * real_path = NULL; + + DECLARE_OLD_FS_ID_VAR; + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (loc, out); + + MAKE_REAL_PATH (real_path, this, loc->path); + + op_ret = access (real_path, mask & 07); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "access failed on %s: %s", + loc->path, strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + return 0; +} + + +int32_t +posix_ftruncate (call_frame_t *frame, xlator_t *this, + fd_t *fd, off_t offset) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct stat buf = {0,}; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + + DECLARE_OLD_FS_ID_VAR; + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL, fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = ftruncate (_fd, offset); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "ftruncate failed: %s", + strerror (errno)); + goto out; + } + + op_ret = fstat (_fd, &buf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "fstat failed: %s", + strerror (errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + + return 0; +} + +int32_t +posix_fchown (call_frame_t *frame, xlator_t *this, + fd_t *fd, uid_t uid, gid_t gid) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct stat buf = {0,}; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + + DECLARE_OLD_FS_ID_VAR; + + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL, fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = fchown (_fd, uid, gid); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "fchown failed: %s", + strerror (op_errno)); + goto out; + } + + op_ret = fstat (_fd, &buf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "fstat failed: %s", + strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + + return 0; +} + + +int32_t +posix_fchmod (call_frame_t *frame, xlator_t *this, + fd_t *fd, mode_t mode) +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + int _fd = -1; + struct stat buf = {0,}; + struct posix_fd * pfd = NULL; + int ret = -1; + uint64_t tmp_pfd = 0; + + DECLARE_OLD_FS_ID_VAR; + + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = fchmod (_fd, mode); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "fchmod failed: %s", strerror (errno)); + goto out; + } + + op_ret = fstat (_fd, &buf); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, + "fstat failed: %s", strerror (errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + + return 0; +} + + +static int +same_file_type (mode_t m1, mode_t m2) +{ + return ((S_IFMT & (m1 ^ m2)) == 0); +} + + +static int +ensure_file_type (xlator_t *this, char *pathname, mode_t mode) +{ + struct stat stbuf = {0,}; + int op_ret = 0; + int ret = -1; + + ret = lstat (pathname, &stbuf); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_CRITICAL, + "stat failed while trying to make sure entry %s " + "is a directory: %s", pathname, strerror (errno)); + goto out; + } + + if (!same_file_type (mode, stbuf.st_mode)) { + op_ret = -EEXIST; + gf_log (this->name, GF_LOG_CRITICAL, + "entry %s is a different type of file " + "than expected", pathname); + goto out; + } + out: + return op_ret; +} + +static int +create_entry (xlator_t *this, int32_t flags, + dir_entry_t *entry, char *pathname) +{ + int op_ret = 0; + int ret = -1; + struct timeval tv[2] = {{0,0},{0,0}}; + + if (S_ISDIR (entry->buf.st_mode)) { + /* + * If the entry is directory, create it by + * calling 'mkdir'. If the entry is already + * present, check if it is a directory, + * and issue a warning if otherwise. + */ + + ret = mkdir (pathname, entry->buf.st_mode); + if (ret == -1) { + if (errno == EEXIST) { + op_ret = ensure_file_type (this, pathname, + entry->buf.st_mode); + } + else { + op_ret = -errno; + gf_log (this->name, GF_LOG_DEBUG, + "mkdir %s with mode (0%o) failed: %s", + pathname, entry->buf.st_mode, + strerror (errno)); + goto out; + } + } + + } else if ((flags & GF_SET_IF_NOT_PRESENT) + || !(flags & GF_SET_DIR_ONLY)) { + + /* create a 0-byte file here */ + + if (S_ISREG (entry->buf.st_mode)) { + ret = open (pathname, O_CREAT|O_EXCL, + entry->buf.st_mode); + + if (ret == -1) { + if (errno == EEXIST) { + op_ret = ensure_file_type (this, + pathname, + entry->buf.st_mode); + } + else { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "Error creating file %s with " + "mode (0%o): %s", + pathname, entry->buf.st_mode, + strerror (errno)); + goto out; + } + } + + close (ret); + + } else if (S_ISLNK (entry->buf.st_mode)) { + ret = symlink (entry->link, pathname); + + if (ret == -1) { + if (errno == EEXIST) { + op_ret = ensure_file_type (this, + pathname, + entry->buf.st_mode); + } + else { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "error creating symlink %s: %s" + , pathname, strerror (errno)); + goto out; + } + } + + } else if (S_ISBLK (entry->buf.st_mode) || + S_ISCHR (entry->buf.st_mode) || + S_ISFIFO (entry->buf.st_mode) || + S_ISSOCK (entry->buf.st_mode)) { + + ret = mknod (pathname, entry->buf.st_mode, + entry->buf.st_dev); + + if (ret == -1) { + if (errno == EEXIST) { + op_ret = ensure_file_type (this, + pathname, + entry->buf.st_mode); + } else { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "error creating device file " + "%s: %s", + pathname, strerror (errno)); + goto out; + } + } + } else { + gf_log (this->name, GF_LOG_ERROR, + "invalid mode 0%o for %s", entry->buf.st_mode, + pathname); + op_ret = -EINVAL; + goto out; + } + } + + /* + * Preserve atime and mtime + */ + + if (!S_ISLNK (entry->buf.st_mode)) { + tv[0].tv_sec = entry->buf.st_atime; + tv[1].tv_sec = entry->buf.st_mtime; + ret = utimes (pathname, tv); + if (ret == -1) { + op_ret = -errno; + gf_log (this->name, GF_LOG_ERROR, + "utimes %s failed: %s", + pathname, strerror (errno)); + goto out; + } + } + +out: + return op_ret; + +} + + +int +posix_setdents (call_frame_t *frame, xlator_t *this, + fd_t *fd, int32_t flags, dir_entry_t *entries, + int32_t count) +{ + char * real_path = NULL; + char * entry_path = NULL; + int32_t real_path_len = -1; + int32_t entry_path_len = -1; + int32_t ret = 0; + int32_t op_ret = -1; + int32_t op_errno = 0; + struct posix_fd * pfd = {0, }; + struct timeval tv[2] = {{0, }, {0, }}; + uint64_t tmp_pfd = 0; + char pathname[ZR_PATH_MAX] = {0,}; + dir_entry_t * trav = NULL; + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + VALIDATE_OR_GOTO (entries, out); + + tv[0].tv_sec = tv[0].tv_usec = 0; + tv[1].tv_sec = tv[1].tv_usec = 0; + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + op_errno = -ret; + gf_log (this->name, GF_LOG_ERROR, + "fd's ctx not found on fd=%p for %s", + fd, this->name); + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + real_path = pfd->path; + + if (!real_path) { + op_errno = EINVAL; + gf_log (this->name, GF_LOG_ERROR, + "path is NULL on pfd=%p fd=%p", pfd, fd); + goto out; + } + + real_path_len = strlen (real_path); + entry_path_len = real_path_len + 256; + entry_path = CALLOC (1, entry_path_len); + + if (!entry_path) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "out of memory :("); + goto out; + } + + strcpy (entry_path, real_path); + entry_path[real_path_len] = '/'; + + posix_xattr_cache_flush_all (this); + + /* fd exists, and everything looks fine */ + /** + * create an entry for each one present in '@entries' + * - if flag is set (ie, if its namespace), create both directories + * and files + * - if not set, create only directories. + * + * after the entry is created, change the mode and ownership of the + * entry according to the stat present in entries->buf. + */ + + trav = entries->next; + while (trav) { + strcpy (pathname, entry_path); + strcat (pathname, trav->name); + + ret = create_entry (this, flags, trav, pathname); + if (ret < 0) { + op_errno = -ret; + goto out; + } + + /* TODO: handle another flag, GF_SET_OVERWRITE */ + + /* Change the mode */ + if (!S_ISLNK (trav->buf.st_mode)) { + ret = chmod (pathname, trav->buf.st_mode); + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "chmod on %s failed: %s", pathname, + strerror (op_errno)); + goto out; + } + } + + /* change the ownership */ + ret = lchown (pathname, trav->buf.st_uid, trav->buf.st_gid); + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "chmod on %s failed: %s", pathname, + strerror (op_errno)); + goto out; + } + + if (flags & GF_SET_EPOCH_TIME) { + ret = utimes (pathname, tv); + if (ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "utimes on %s failed: %s", pathname, + strerror (op_errno)); + goto out; + } + } + + /* consider the next entry */ + trav = trav->next; + } + + op_ret = 0; + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno); + if (entry_path) + FREE (entry_path); + + return 0; +} + +int32_t +posix_fstat (call_frame_t *frame, xlator_t *this, + fd_t *fd) +{ + int _fd = -1; + int32_t op_ret = -1; + int32_t op_errno = 0; + struct stat buf = {0,}; + struct posix_fd * pfd = NULL; + uint64_t tmp_pfd = 0; + int ret = -1; + + DECLARE_OLD_FS_ID_VAR; + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL, fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = fstat (_fd, &buf); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_WARNING, "fstat failed: %s", + strerror (op_errno)); + goto out; + } + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &buf); + return 0; +} + +static int gf_posix_lk_log; + +int32_t +posix_lk (call_frame_t *frame, xlator_t *this, + fd_t *fd, int32_t cmd, struct flock *lock) +{ + struct flock nullock = {0, }; + frame->root->rsp_refs = NULL; + + gf_posix_lk_log++; + + GF_LOG_OCCASIONALLY (gf_posix_lk_log, this->name, GF_LOG_ERROR, + "\"features/posix-locks\" translator is " + "not loaded, you need to use it"); + + STACK_UNWIND (frame, -1, ENOSYS, &nullock); + return 0; +} + +int32_t +posix_inodelk (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t cmd, struct flock *lock) +{ + frame->root->rsp_refs = NULL; + + gf_log (this->name, GF_LOG_CRITICAL, + "\"features/posix-locks\" translator is not loaded. " + "You need to use it for proper functioning of GlusterFS"); + + STACK_UNWIND (frame, -1, ENOSYS); + return 0; +} + +int32_t +posix_finodelk (call_frame_t *frame, xlator_t *this, + fd_t *fd, int32_t cmd, struct flock *lock) +{ + frame->root->rsp_refs = NULL; + + gf_log (this->name, GF_LOG_CRITICAL, + "\"features/posix-locks\" translator is not loaded. " + "You need to use it for proper functioning of GlusterFS"); + + STACK_UNWIND (frame, -1, ENOSYS); + return 0; +} + + +int32_t +posix_entrylk (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *basename, entrylk_cmd cmd, + entrylk_type type) +{ + frame->root->rsp_refs = NULL; + + gf_log (this->name, GF_LOG_CRITICAL, + "\"features/posix-locks\" translator is not loaded. " + "You need to use it for proper functioning of GlusterFS"); + + STACK_UNWIND (frame, -1, ENOSYS); + return 0; +} + +int32_t +posix_fentrylk (call_frame_t *frame, xlator_t *this, + fd_t *fd, const char *basename, entrylk_cmd cmd, + entrylk_type type) +{ + frame->root->rsp_refs = NULL; + + gf_log (this->name, GF_LOG_CRITICAL, + "\"features/posix-locks\" translator is not loaded. " + " You need to use it for proper functioning of GlusterFS"); + + STACK_UNWIND (frame, -1, ENOSYS); + return 0; +} + + +int32_t +posix_readdir (call_frame_t *frame, xlator_t *this, + fd_t *fd, size_t size, off_t off) +{ + uint64_t tmp_pfd = 0; + struct posix_fd * pfd = NULL; + DIR * dir = NULL; + int ret = -1; + size_t filled = 0; + int count = 0; + + int32_t op_ret = -1; + int32_t op_errno = 0; + + gf_dirent_t * this_entry = NULL; + gf_dirent_t entries; + struct dirent * entry = NULL; + off_t in_case = -1; + int32_t this_size = -1; + + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + VALIDATE_OR_GOTO (fd, out); + + INIT_LIST_HEAD (&entries.list); + + ret = fd_ctx_get (fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "pfd is NULL, fd=%p", fd); + op_errno = -ret; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + dir = pfd->dir; + + if (!dir) { + gf_log (this->name, GF_LOG_ERROR, + "dir is NULL for fd=%p", fd); + op_errno = EINVAL; + goto out; + } + + + if (!off) { + rewinddir (dir); + } else { + seekdir (dir, off); + } + + while (filled <= size) { + in_case = telldir (dir); + + if (in_case == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "telldir failed: %s", + strerror (errno)); + goto out; + } + + errno = 0; + entry = readdir (dir); + + if (!entry) { + if (errno == EBADF) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "readdir failed: %s", + strerror (op_errno)); + goto out; + } + break; + } + + this_size = dirent_size (entry); + + if (this_size + filled > size) { + seekdir (dir, in_case); + break; + } + + + this_entry = gf_dirent_for_name (entry->d_name); + + if (!this_entry) { + gf_log (this->name, GF_LOG_ERROR, + "could not create gf_dirent for entry %s (%s)", + entry->d_name, strerror (errno)); + goto out; + } + this_entry->d_off = telldir (dir); + this_entry->d_ino = entry->d_ino; + + list_add_tail (&this_entry->list, &entries.list); + + filled += this_size; + count ++; + } + + op_ret = count; + + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, &entries); + + gf_dirent_free (&entries); + + return 0; +} + + +int32_t +posix_stats (call_frame_t *frame, xlator_t *this, + int32_t flags) + +{ + int32_t op_ret = -1; + int32_t op_errno = 0; + + struct xlator_stats xlstats = {0, }; + struct xlator_stats * stats = NULL; + struct statvfs buf = {0,}; + struct timeval tv = {0,}; + struct posix_private * priv = (struct posix_private *)this->private; + + int64_t avg_read = 0; + int64_t avg_write = 0; + int64_t _time_ms = 0; + + DECLARE_OLD_FS_ID_VAR; + + SET_FS_ID (frame->root->uid, frame->root->gid); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (this, out); + + stats = &xlstats; + + op_ret = statvfs (priv->base_path, &buf); + + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "statvfs failed: %s", + strerror (op_errno)); + goto out; + } + + /* client info is maintained at FSd */ + stats->nr_clients = priv->stats.nr_clients; + stats->nr_files = priv->stats.nr_files; + + /* number of free block in the filesystem. */ + stats->free_disk = buf.f_bfree * buf.f_bsize; + + stats->total_disk_size = buf.f_blocks * buf.f_bsize; + stats->disk_usage = (buf.f_blocks - buf.f_bavail) * buf.f_bsize; + + /* Calculate read and write usage */ + op_ret = gettimeofday (&tv, NULL); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, + "gettimeofday failed: %s", strerror (errno)); + goto out; + } + + /* Read */ + _time_ms = (tv.tv_sec - priv->init_time.tv_sec) * 1000 + + ((tv.tv_usec - priv->init_time.tv_usec) / 1000); + + avg_read = (_time_ms) ? (priv->read_value / _time_ms) : 0; /* KBps */ + avg_write = (_time_ms) ? (priv->write_value / _time_ms) : 0; /* KBps */ + + _time_ms = (tv.tv_sec - priv->prev_fetch_time.tv_sec) * 1000 + + ((tv.tv_usec - priv->prev_fetch_time.tv_usec) / 1000); + + if (_time_ms && ((priv->interval_read / _time_ms) > priv->max_read)) { + priv->max_read = (priv->interval_read / _time_ms); + } + + if (_time_ms && + ((priv->interval_write / _time_ms) > priv->max_write)) { + priv->max_write = priv->interval_write / _time_ms; + } + + stats->read_usage = avg_read / priv->max_read; + stats->write_usage = avg_write / priv->max_write; + + op_ret = gettimeofday (&(priv->prev_fetch_time), NULL); + if (op_ret == -1) { + op_errno = errno; + gf_log (this->name, GF_LOG_ERROR, "gettimeofday failed: %s", + strerror (op_errno)); + goto out; + } + + priv->interval_read = 0; + priv->interval_write = 0; + + op_ret = 0; + + out: + SET_TO_OLD_FS_ID (); + + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, stats); + return 0; +} + +int32_t +posix_checksum (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t flag) +{ + char * real_path = NULL; + DIR * dir = NULL; + struct dirent * dirent = NULL; + uint8_t file_checksum[ZR_FILENAME_MAX] = {0,}; + uint8_t dir_checksum[ZR_FILENAME_MAX] = {0,}; + int32_t op_ret = -1; + int32_t op_errno = 0; + int i = 0; + int length = 0; + + struct stat buf = {0,}; + char tmp_real_path[ZR_PATH_MAX] = {0,}; + int ret = -1; + + MAKE_REAL_PATH (real_path, this, loc->path); + + dir = opendir (real_path); + + if (!dir){ + op_errno = errno; + gf_log (this->name, GF_LOG_DEBUG, + "opendir() failed on `%s': %s", + real_path, strerror (op_errno)); + goto out; + } + + while ((dirent = readdir (dir))) { + errno = 0; + if (!dirent) { + if (errno != 0) { + op_errno = errno; + gf_log (this->name, GF_LOG_DEBUG, + "readdir() failed: %s", + strerror (errno)); + goto out; + } + break; + } + + length = strlen (dirent->d_name); + + strcpy (tmp_real_path, real_path); + strcat (tmp_real_path, "/"); + strcat (tmp_real_path, dirent->d_name); + ret = lstat (tmp_real_path, &buf); + + if (ret == -1) + continue; + + if (S_ISDIR (buf.st_mode)) { + for (i = 0; i < length; i++) + dir_checksum[i] ^= dirent->d_name[i]; + } else { + for (i = 0; i < length; i++) + file_checksum[i] ^= dirent->d_name[i]; + } + } + closedir (dir); + + op_ret = 0; + + out: + frame->root->rsp_refs = NULL; + STACK_UNWIND (frame, op_ret, op_errno, file_checksum, dir_checksum); + + return 0; +} + +/** + * notify - when parent sends PARENT_UP, send CHILD_UP event from here + */ +int32_t +notify (xlator_t *this, + int32_t event, + void *data, + ...) +{ + switch (event) + { + case GF_EVENT_PARENT_UP: + { + /* Tell the parent that posix xlator is up */ + default_notify (this, GF_EVENT_CHILD_UP, data); + } + break; + default: + /* */ + break; + } + return 0; +} + +/** + * init - + */ +int +init (xlator_t *this) +{ + int ret = 0; + int op_ret = -1; + gf_boolean_t tmp_bool = 0; + struct stat buf = {0,}; + struct posix_private * _private = NULL; + data_t * dir_data = NULL; + data_t * tmp_data = NULL; + + dir_data = dict_get (this->options, "directory"); + + if (this->children) { + gf_log (this->name, GF_LOG_ERROR, + "FATAL: storage/posix cannot have subvolumes"); + ret = -1; + goto out; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "dangling volume. check volfile "); + } + + if (!dir_data) { + gf_log (this->name, GF_LOG_ERROR, + "export directory not specified in volfile"); + ret = -1; + goto out; + } + + umask (000); // umask `masking' is done at the client side + + /* Check whether the specified directory exists, if not create it. */ + op_ret = lstat (dir_data->data, &buf); + if ((ret != 0) || !S_ISDIR (buf.st_mode)) { + gf_log (this->name, GF_LOG_ERROR, + "directory '%s' doesn't exists, Exiting", + dir_data->data); + ret = -1; + goto out; + } + + + /* Check for Extended attribute support, if not present, log it */ + op_ret = lsetxattr (dir_data->data, + "trusted.glusterfs.test", "working", 8, 0); + if (op_ret < 0) { + tmp_data = dict_get (this->options, + "mandate-attribute"); + if (tmp_data) { + if (gf_string2boolean (tmp_data->data, + &tmp_bool) == -1) { + gf_log (this->name, GF_LOG_ERROR, + "wrong option provided for key " + "\"mandate-xattr\""); + ret = -1; + goto out; + } + if (!tmp_bool) { + gf_log (this->name, GF_LOG_WARNING, + "Extended attribute not supported, " + "starting as per option"); + } else { + gf_log (this->name, GF_LOG_CRITICAL, + "Extended attribute not supported, " + "exiting"); + ret = -1; + goto out; + } + } else { + gf_log (this->name, GF_LOG_CRITICAL, + "Extended attribute not supported, exiting"); + ret = -1; + goto out; + } + } + + _private = CALLOC (1, sizeof (*_private)); + if (!_private) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + ret = -1; + goto out; + } + + _private->base_path = strdup (dir_data->data); + _private->base_path_length = strlen (_private->base_path); + _private->base_stdev = buf.st_dev; + + _private->xattr_cache = posix_xattr_cache_init (16); + if (!_private->xattr_cache) { + gf_log (this->name, GF_LOG_ERROR, + "out of memory :("); + ret = -1; + goto out; + } + + { + /* Stats related variables */ + gettimeofday (&_private->init_time, NULL); + gettimeofday (&_private->prev_fetch_time, NULL); + _private->max_read = 1; + _private->max_write = 1; + } + + _private->export_statfs = 1; + tmp_data = dict_get (this->options, "export-statfs-size"); + if (tmp_data) { + if (gf_string2boolean (tmp_data->data, + &_private->export_statfs) == -1) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "'export-statfs-size' takes only boolean " + "options"); + goto out; + } + if (!_private->export_statfs) + gf_log (this->name, GF_LOG_DEBUG, + "'statfs()' returns dummy size"); + } + + tmp_data = dict_get (this->options, "o-direct"); + if (tmp_data) { + if (gf_string2boolean (tmp_data->data, + &_private->o_direct) == -1) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "wrong option provided for 'o-direct'"); + goto out; + } + if (_private->o_direct) + gf_log (this->name, GF_LOG_DEBUG, + "o-direct mode is enabled (O_DIRECT " + "for every open)"); + } + +#ifndef GF_DARWIN_HOST_OS + { + struct rlimit lim; + lim.rlim_cur = 1048576; + lim.rlim_max = 1048576; + + if (setrlimit (RLIMIT_NOFILE, &lim) == -1) { + gf_log (this->name, GF_LOG_WARNING, + "WARNING: Failed to set 'ulimit -n " + " 1048576': %s", strerror(errno)); + lim.rlim_cur = 65536; + lim.rlim_max = 65536; + + if (setrlimit (RLIMIT_NOFILE, &lim) == -1) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to set max open fd to " + "64k: %s", strerror(errno)); + } + else { + gf_log (this->name, GF_LOG_ERROR, + "max open fd set to 64k"); + } + } + } +#endif + + this->private = (void *)_private; + + out: + return ret; +} + +void +fini (xlator_t *this) +{ + struct posix_private *priv = this->private; + lremovexattr (priv->base_path, "trusted.glusterfs.test"); + FREE (priv); + return; +} + +struct xlator_mops mops = { + .stats = posix_stats, +}; + +struct xlator_fops fops = { + .lookup = posix_lookup, + .stat = posix_stat, + .opendir = posix_opendir, + .readdir = posix_readdir, + .readlink = posix_readlink, + .mknod = posix_mknod, + .mkdir = posix_mkdir, + .unlink = posix_unlink, + .rmdir = posix_rmdir, + .symlink = posix_symlink, + .rename = posix_rename, + .link = posix_link, + .chmod = posix_chmod, + .chown = posix_chown, + .truncate = posix_truncate, + .utimens = posix_utimens, + .create = posix_create, + .open = posix_open, + .readv = posix_readv, + .writev = posix_writev, + .statfs = posix_statfs, + .flush = posix_flush, + .fsync = posix_fsync, + .setxattr = posix_setxattr, + .getxattr = posix_getxattr, + .removexattr = posix_removexattr, + .fsyncdir = posix_fsyncdir, + .access = posix_access, + .ftruncate = posix_ftruncate, + .fstat = posix_fstat, + .lk = posix_lk, + .inodelk = posix_inodelk, + .finodelk = posix_finodelk, + .entrylk = posix_entrylk, + .fentrylk = posix_fentrylk, + .fchown = posix_fchown, + .fchmod = posix_fchmod, + .setdents = posix_setdents, + .getdents = posix_getdents, + .checksum = posix_checksum, + .xattrop = posix_xattrop, + .fxattrop = posix_fxattrop, +}; + +struct xlator_cbks cbks = { + .release = posix_release, + .releasedir = posix_releasedir, + .forget = posix_forget +}; + +struct volume_options options[] = { + { .key = {"o-direct"}, + .type = GF_OPTION_TYPE_BOOL }, + { .key = {"directory"}, + .type = GF_OPTION_TYPE_PATH }, + { .key = {"export-statfs-size"}, + .type = GF_OPTION_TYPE_BOOL }, + { .key = {"mandate-attribute"}, + .type = GF_OPTION_TYPE_BOOL }, + { .key = {NULL} } +}; diff --git a/xlators/storage/posix/src/posix.h b/xlators/storage/posix/src/posix.h new file mode 100644 index 00000000000..b162139c955 --- /dev/null +++ b/xlators/storage/posix/src/posix.h @@ -0,0 +1,110 @@ +/* + Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef _POSIX_H +#define _POSIX_H + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> +#include <dirent.h> + +#ifdef linux +#ifdef __GLIBC__ +#include <sys/fsuid.h> +#else +#include <unistd.h> +#endif +#endif + +#ifdef HAVE_SYS_XATTR_H +#include <sys/xattr.h> +#endif + +#ifdef HAVE_SYS_EXTATTR_H +#include <sys/extattr.h> +#endif + +#include "xlator.h" +#include "inode.h" +#include "compat.h" + +#include "xattr-cache.h" + +/** + * posix_fd - internal structure common to file and directory fd's + */ + +struct posix_fd { + int fd; /* fd returned by the kernel */ + int32_t flags; /* flags for open/creat */ + char * path; /* used by setdents/getdents */ + DIR * dir; /* handle returned by the kernel */ +}; + +struct posix_private { + char *base_path; + int32_t base_path_length; + dev_t base_stdev; + + xattr_cache_t *xattr_cache; + + /* Statistics, provides activity of the server */ + struct xlator_stats stats; + + struct timeval prev_fetch_time; + struct timeval init_time; + + int32_t max_read; /* */ + int32_t max_write; /* */ + int64_t interval_read; /* Used to calculate the max_read value */ + int64_t interval_write; /* Used to calculate the max_write value */ + int64_t read_value; /* Total read, from init */ + int64_t write_value; /* Total write, from init */ + +/* + In some cases, two exported volumes may reside on the same + partition on the server. Sending statvfs info for both + the volumes will lead to erroneous df output at the client, + since free space on the partition will be counted twice. + + In such cases, user can disable exporting statvfs info + on one of the volumes by setting this option. +*/ + gf_boolean_t export_statfs; + + gf_boolean_t o_direct; /* always open files in O_DIRECT mode */ +}; + +#define POSIX_BASE_PATH(this) (((struct posix_private *)this->private)->base_path) + +#define POSIX_BASE_PATH_LEN(this) (((struct posix_private *)this->private)->base_path_length) + +#define MAKE_REAL_PATH(var, this, path) do { \ + var = alloca (strlen (path) + POSIX_BASE_PATH_LEN(this) + 2); \ + strcpy (var, POSIX_BASE_PATH(this)); \ + strcpy (&var[POSIX_BASE_PATH_LEN(this)], path); \ + } while (0) + +#endif /* _POSIX_H */ diff --git a/xlators/storage/posix/src/xattr-cache.c b/xlators/storage/posix/src/xattr-cache.c new file mode 100644 index 00000000000..a39c35ae234 --- /dev/null +++ b/xlators/storage/posix/src/xattr-cache.c @@ -0,0 +1,521 @@ +/* + Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#include "byte-order.h" + +#include "xattr-cache.h" +#include "posix.h" +#include "compat-errno.h" + +static int +__hgetxattr (xattr_cache_handle_t *handle, xlator_t *this, + const char *key, void *value, size_t len) +{ + char * real_path = NULL; + struct posix_fd * pfd = NULL; + uint64_t tmp_pfd = 0; + int op_ret = -1; + int ret = -1; + int _fd = -1; + + if (handle->loc.path) { + MAKE_REAL_PATH (real_path, this, handle->loc.path); + op_ret = lgetxattr (real_path, key, value, len); + + if (op_ret == -1) + op_ret = -errno; + } else { + ret = fd_ctx_get (handle->fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "failed to get pfd from fd=%p", + handle->fd); + op_ret = -EBADFD; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + _fd = pfd->fd; + + op_ret = fgetxattr (_fd, key, value, len); + if (op_ret == -1) + op_ret = -errno; + } + +out: + return op_ret; +} + + +static int +__hsetxattr (xattr_cache_handle_t *handle, xlator_t *this, + const char *key, void *value, size_t len, int flags) +{ + char * real_path = NULL; + struct posix_fd * pfd = NULL; + uint64_t tmp_pfd = 0; + int op_ret = -1; + int ret = -1; + int _fd = -1; + + if (handle->loc.path) { + MAKE_REAL_PATH (real_path, this, handle->loc.path); + + op_ret = lsetxattr (real_path, key, value, len, flags); + if (op_ret == -1) + op_ret = -errno; + } else { + ret = fd_ctx_get (handle->fd, this, &tmp_pfd); + if (ret < 0) { + gf_log (this->name, GF_LOG_ERROR, + "failed to get pfd from fd=%p", + handle->fd); + + op_ret = -EBADFD; + goto out; + } + pfd = (struct posix_fd *)(long)tmp_pfd; + + _fd = pfd->fd; + + op_ret = fsetxattr (_fd, key, value, len, flags); + if (op_ret == -1) + op_ret = -errno; + } + +out: + return op_ret; +} + + +static xattr_cache_entry_t * +__cache_lookup (xattr_cache_t *cache, inode_t *inode, char *key) +{ + int i = 0; + + for (i = 0; i < cache->size; i++) { + if ((cache->entries[i]->inode == inode) + && (!strcmp (cache->entries[i]->key, key))) { + cache->entries[i]->nraccess++; + return cache->entries[i]; + } + } + + return NULL; +} + + +static xattr_cache_entry_t * +__cache_least_used_entry (xattr_cache_t *cache) +{ + xattr_cache_entry_t *lue = cache->entries[0]; + int i; + + for (i = 0; i < cache->size; i++) { + if (cache->entries[i]->nraccess < lue->nraccess) + lue = cache->entries[i]; + } + + lue->nraccess++; + return lue; +} + + +static inode_t * +__inode_for_handle (xattr_cache_handle_t *handle) +{ + inode_t *inode = NULL; + + if (handle->loc.path) + inode = handle->loc.inode; + else if (handle->fd) + inode = handle->fd->inode; + + return inode; +} + + +static void +__free_handle (xattr_cache_handle_t *handle) +{ + if (handle->loc.path) + loc_wipe (&handle->loc); + + FREE (handle); +} + + +static xattr_cache_handle_t * +__copy_handle (xattr_cache_handle_t *handle) +{ + xattr_cache_handle_t *hnew = calloc (1, sizeof (xattr_cache_handle_t)); + + if (handle->loc.path) + loc_copy (&hnew->loc, &handle->loc); + else + hnew->fd = handle->fd; + + return hnew; +} + + +static int +__cache_populate_entry (xattr_cache_entry_t *entry, xlator_t *this, + xattr_cache_handle_t *handle, char *key, size_t len) +{ + int op_ret = -1; + + entry->array = calloc (1, len); + if (!entry->array) { + op_ret = -ENOMEM; + goto out; + } + + op_ret = __hgetxattr (handle, this, key, entry->array, len); + + entry->key = strdup (key); + entry->inode = __inode_for_handle (handle); + entry->handle = __copy_handle (handle); + entry->len = len; + entry->nraccess = 1; + +out: + return op_ret; +} + + +static int +__cache_flush_entry (xattr_cache_entry_t *entry, xlator_t *this) +{ + int ret = -1; + + if (entry->dirty) { + ret = __hsetxattr (entry->handle, this, + entry->key, entry->array, entry->len, 0); + } + + entry->len = 0; + entry->nraccess = 0; + entry->dirty = 0; + entry->inode = NULL; + + if (entry->key) { + FREE (entry->key); + entry->key = NULL; + } + + if (entry->array) { + FREE (entry->array); + entry->array = NULL; + } + + if (entry->handle) { + __free_handle (entry->handle); + entry->handle = NULL; + } + + return 0; +} + + +static void +__print_array (char *str, xlator_t *this, int32_t *array, size_t len) +{ + char *ptr = NULL; + char *buf = NULL; + + int i, count = -1; + + count = len / sizeof (int32_t); + + /* 10 digits per entry + 1 space + '[' and ']' */ + buf = malloc (count * 11 + 8); + + ptr = buf; + ptr += sprintf (ptr, "[ "); + for (i = 0; i < count; i++) + ptr += sprintf (ptr, "%d ", ntoh32 (array[i])); + ptr += sprintf (ptr, "]"); + + gf_log (this->name, GF_LOG_DEBUG, + "%s%s", str, buf); + + FREE (buf); +} + + +int +posix_xattr_cache_read (xlator_t *this, xattr_cache_handle_t *handle, + char *key, int32_t *array, size_t len) +{ + xattr_cache_entry_t *entry = NULL; + xattr_cache_entry_t *purgee = NULL; + + xattr_cache_t *cache = NULL; + inode_t *inode = NULL; + + int op_ret = -1; + + inode = __inode_for_handle (handle); + + if (!inode) { + gf_log (this->name, GF_LOG_DEBUG, + "handle has no inode!"); + goto out; + } + + cache = ((struct posix_private *) (this->private))->xattr_cache; + + pthread_mutex_lock (&cache->lock); + { + entry = __cache_lookup (cache, inode, key); + + if (entry) { + if (handle->loc.path) + gf_log (this->name, GF_LOG_DEBUG, + "cache hit for %s", handle->loc.path); + else if (handle->fd) + gf_log (this->name, GF_LOG_DEBUG, + "cache hit for fd=%p", handle->fd); + } + + if (!entry) { + purgee = __cache_least_used_entry (cache); + + if (purgee->handle && purgee->handle->loc.path) + gf_log (this->name, GF_LOG_DEBUG, + "flushing and purging entry for %s", + purgee->handle->loc.path); + else if (purgee->handle && purgee->handle->fd) + gf_log (this->name, GF_LOG_DEBUG, + "flushing and purging entry for fd=%p", + purgee->handle->fd); + __cache_flush_entry (purgee, this); + + if (handle->loc.path) + gf_log (this->name, GF_LOG_DEBUG, + "populating entry for %s", + handle->loc.path); + else if (handle->fd) + gf_log (this->name, GF_LOG_DEBUG, + "populating entry for fd=%p", + handle->fd); + __cache_populate_entry (purgee, this, handle, key, len); + + entry = purgee; + } + + memcpy (array, entry->array, len); + + __print_array ("read array: ", this, array, len); + } + pthread_mutex_unlock (&cache->lock); + + op_ret = 0; +out: + return op_ret; +} + + +int posix_xattr_cache_write (xlator_t *this, xattr_cache_handle_t *handle, + char *key, int32_t *array, size_t len) +{ + xattr_cache_t * cache = NULL; + xattr_cache_entry_t * entry = NULL; + + inode_t *inode = NULL; + + int op_ret = -1; + + inode = __inode_for_handle (handle); + + if (!inode) { + gf_log (this->name, GF_LOG_DEBUG, + "handle has no inode!"); + goto out; + } + + cache = ((struct posix_private *) (this->private))->xattr_cache; + + pthread_mutex_lock (&cache->lock); + { + entry = __cache_lookup (cache, inode, key); + + if (entry) { + entry->dirty = 1; + memcpy (entry->array, array, len); + } else { + /* + * This case shouldn't usually happen, since the + * entry should have been brought into the cache + * by the previous read (xattrop always does a read & + * write). + * + * If we've reached here, it means things are happening + * very quickly and the entry was flushed after read + * but before this write. In that case, let's just + * write this to disk + */ + + op_ret = __hsetxattr (handle, this, key, array, + len, 0); + } + + __print_array ("wrote array: ", this, array, len); + } + pthread_mutex_unlock (&cache->lock); + + op_ret = 0; +out: + return op_ret; +} + + +int posix_xattr_cache_flush (xlator_t *this, xattr_cache_handle_t *handle) +{ + xattr_cache_t *cache = NULL; + xattr_cache_entry_t *entry = NULL; + + int i; + inode_t *inode = NULL; + + int op_ret = -1; + + inode = __inode_for_handle (handle); + if (!inode) { + gf_log (this->name, GF_LOG_DEBUG, + "handle has no inode!"); + op_ret = -EINVAL; + goto out; + } + + cache = ((struct posix_private *) (this->private))->xattr_cache; + + pthread_mutex_lock (&cache->lock); + { + for (i = 0; i < cache->size; i++) { + entry = cache->entries[i]; + + if (entry->inode == inode) { + if (entry->handle->loc.path) + gf_log (this->name, GF_LOG_DEBUG, + "force flushing entry for %s", + entry->handle->loc.path); + + else if (cache->entries[i]->handle->fd) + gf_log (this->name, GF_LOG_DEBUG, + "force flushing entry for fd=%p", + entry->handle->fd); + + __cache_flush_entry (entry, this); + } + } + } + pthread_mutex_unlock (&cache->lock); + + op_ret = 0; +out: + return op_ret; +} + + +int +posix_xattr_cache_flush_all (xlator_t *this) +{ + xattr_cache_t *cache = NULL; + xattr_cache_entry_t *entry = NULL; + + int i; + int op_ret = 0; + + cache = ((struct posix_private *) (this->private))->xattr_cache; + + pthread_mutex_lock (&cache->lock); + { + gf_log (this->name, GF_LOG_DEBUG, + "flushing entire xattr cache: "); + + for (i = 0; i < cache->size; i++) { + entry = cache->entries[i]; + + if (!entry || !entry->handle) + continue; + + if (entry->handle->loc.path) + gf_log (this->name, GF_LOG_DEBUG, + " force flushing entry for %s", + entry->handle->loc.path); + + else if (cache->entries[i]->handle->fd) + gf_log (this->name, GF_LOG_DEBUG, + " force flushing entry for fd=%p", + entry->handle->fd); + + __cache_flush_entry (entry, this); + } + } + pthread_mutex_unlock (&cache->lock); + + return op_ret; +} + + +xattr_cache_t * +posix_xattr_cache_init (size_t size) +{ + int i = 0; + xattr_cache_t * cache = NULL; + int op_ret = -1; + + cache = CALLOC (1, sizeof (xattr_cache_t)); + if (!cache) { + goto out; + } + + cache->entries = CALLOC (size, sizeof (xattr_cache_entry_t *)); + if (!cache->entries) + goto out; + + cache->size = size; + + for (i = 0; i < size; i++) { + cache->entries[i] = calloc (1, sizeof (xattr_cache_entry_t)); + if (!cache->entries[i]) + goto out; + } + + pthread_mutex_init (&cache->lock, NULL); + + op_ret = 0; +out: + if (op_ret == -1) { + if (cache) { + if (cache->entries) { + for (i = 0; i < size; i++) + if (cache->entries[i]) + FREE (cache->entries[i]); + + FREE (cache->entries); + } + + FREE (cache); + } + } + + return cache; +} diff --git a/xlators/storage/posix/src/xattr-cache.h b/xlators/storage/posix/src/xattr-cache.h new file mode 100644 index 00000000000..3e12742a90f --- /dev/null +++ b/xlators/storage/posix/src/xattr-cache.h @@ -0,0 +1,65 @@ +/* + Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com> + This file is part of GlusterFS. + + GlusterFS is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3 of the License, + or (at your option) any later version. + + GlusterFS is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see + <http://www.gnu.org/licenses/>. +*/ + +#ifndef __XATTR_CACHE_H__ +#define __XATTR_CACHE_H__ + + +#include "glusterfs.h" +#include "inode.h" + +typedef struct __xattr_cache_handle { + loc_t loc; + fd_t *fd; +} xattr_cache_handle_t; + + +typedef struct __xattr_cache_entry { + char *key; /* name of the xattr */ + int32_t *array; /* value */ + size_t len; /* length of array in bytes */ + inode_t *inode; /* inode for which the entry is for */ + + xattr_cache_handle_t *handle; + unsigned char dirty; + unsigned long nraccess; /* number of times accessed */ +} xattr_cache_entry_t; + + +typedef struct __xattr_cache { + size_t size; + pthread_mutex_t lock; + xattr_cache_entry_t **entries; +} xattr_cache_t; + + +xattr_cache_t * posix_xattr_cache_init (size_t size); + +int posix_xattr_cache_read (xlator_t *this, xattr_cache_handle_t *handle, + char *key, int32_t *array, size_t len); + +int posix_xattr_cache_write (xlator_t *this, xattr_cache_handle_t *handle, + char *key, int32_t *array, size_t len); + +int posix_xattr_cache_flush (xlator_t *this, xattr_cache_handle_t *handle); + +int posix_xattr_cache_flush_all (xlator_t *this); + + +#endif /* __XATTR_CACHE_H__ */ |