diff options
Diffstat (limited to 'xlators/meta/src/meta-defaults.c')
| -rw-r--r-- | xlators/meta/src/meta-defaults.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/xlators/meta/src/meta-defaults.c b/xlators/meta/src/meta-defaults.c new file mode 100644 index 00000000000..91c328473f8 --- /dev/null +++ b/xlators/meta/src/meta-defaults.c @@ -0,0 +1,655 @@ +/* + Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include <glusterfs/xlator.h> +#include <glusterfs/defaults.h> + +#include "meta-mem-types.h" +#include "meta.h" + +#include <glusterfs/compat-errno.h> + +int +meta_default_fgetxattr(call_frame_t *frame, xlator_t *this, fd_t *fd, + const char *name, dict_t *xdata) +{ + return default_fgetxattr_failure_cbk(frame, EPERM); +} + +int +meta_default_fsetxattr(call_frame_t *frame, xlator_t *this, fd_t *fd, + dict_t *dict, int32_t flags, dict_t *xdata) +{ + return default_fsetxattr_failure_cbk(frame, EPERM); +} + +int +meta_default_setxattr(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *dict, int32_t flags, dict_t *xdata) +{ + return default_setxattr_failure_cbk(frame, EPERM); +} + +int +meta_default_statfs(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata) +{ + return default_statfs_failure_cbk(frame, EPERM); +} + +int +meta_default_fsyncdir(call_frame_t *frame, xlator_t *this, fd_t *fd, + int32_t flags, dict_t *xdata) +{ + return default_fsyncdir_failure_cbk(frame, EPERM); +} + +int +meta_default_opendir(call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd, + dict_t *xdata) +{ + META_STACK_UNWIND(opendir, frame, 0, 0, fd, xdata); + return 0; +} + +int +meta_default_fstat(call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + struct iatt iatt = {}; + + meta_iatt_fill(&iatt, fd->inode, fd->inode->ia_type); + + META_STACK_UNWIND(fstat, frame, 0, 0, &iatt, xdata); + + return 0; +} + +int +meta_default_fsync(call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, + dict_t *xdata) +{ + return default_fsync_failure_cbk(frame, EPERM); +} + +int +meta_default_flush(call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) +{ + META_STACK_UNWIND(flush, frame, 0, 0, xdata); + return 0; +} + +int +meta_default_writev(call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iovec *vector, int32_t count, off_t off, + uint32_t flags, struct iobref *iobref, dict_t *xdata) +{ + struct meta_ops *ops = NULL; + int ret = 0; + struct iatt dummy = {}; + + ops = meta_ops_get(fd->inode, this); + if (!ops) + goto err; + + if (!ops->file_write) + goto err; + + ret = ops->file_write(this, fd, vector, count); + + META_STACK_UNWIND(writev, frame, (ret >= 0 ? ret : -1), + (ret < 0 ? -ret : 0), &dummy, &dummy, xdata); + return 0; +err: + return default_writev_failure_cbk(frame, EPERM); +} + +int +meta_default_readv(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t offset, uint32_t flags, dict_t *xdata) +{ + meta_fd_t *meta_fd = NULL; + struct iovec iov = {}; + struct iobuf *iobuf = NULL; + struct iobref *iobref = NULL; + off_t copy_offset = 0; + int copy_size = 0; + struct iatt iatt = {}; + + meta_fd = meta_fd_get(fd, this); + if (!meta_fd) + return default_readv_failure_cbk(frame, ENODATA); + + if (!meta_fd->size) + meta_file_fill(this, fd); + + iobuf = iobuf_get2(this->ctx->iobuf_pool, size); + if (!iobuf) + return default_readv_failure_cbk(frame, ENOMEM); + + iobref = iobref_new(); + if (!iobref) { + iobuf_unref(iobuf); + return default_readv_failure_cbk(frame, ENOMEM); + } + + if (iobref_add(iobref, iobuf) != 0) { + iobref_unref(iobref); + iobuf_unref(iobuf); + return default_readv_failure_cbk(frame, ENOMEM); + } + + iov.iov_base = iobuf_ptr(iobuf); + + /* iobref would have taken a ref */ + iobuf_unref(iobuf); + + copy_offset = min(meta_fd->size, offset); + copy_size = min(size, (meta_fd->size - copy_offset)); + + if (copy_size) + memcpy(iov.iov_base, meta_fd->data + copy_offset, copy_size); + iov.iov_len = copy_size; + + META_STACK_UNWIND(readv, frame, copy_size, 0, &iov, 1, &iatt, iobref, 0); + + iobref_unref(iobref); + + return 0; +} + +int +meta_default_open(call_frame_t *frame, xlator_t *this, loc_t *loc, + int32_t flags, fd_t *fd, dict_t *xdata) +{ + dict_t *xdata_rsp = NULL; + + xdata_rsp = meta_direct_io_mode(xdata, frame); + + META_STACK_UNWIND(open, frame, 0, 0, fd, xdata_rsp); + + return 0; +} + +int +meta_default_create(call_frame_t *frame, xlator_t *this, loc_t *loc, + int32_t flags, mode_t mode, mode_t umask, fd_t *fd, + dict_t *xdata) +{ + return default_create_failure_cbk(frame, EPERM); +} + +int +meta_default_link(call_frame_t *frame, xlator_t *this, loc_t *oldloc, + loc_t *newloc, dict_t *xdata) +{ + return default_link_failure_cbk(frame, EPERM); +} + +int +meta_default_rename(call_frame_t *frame, xlator_t *this, loc_t *oldloc, + loc_t *newloc, dict_t *xdata) +{ + return default_rename_failure_cbk(frame, EPERM); +} + +int +meta_default_symlink(call_frame_t *frame, xlator_t *this, const char *linkpath, + loc_t *loc, mode_t umask, dict_t *xdata) +{ + return default_symlink_failure_cbk(frame, EPERM); +} + +int +meta_default_rmdir(call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, + dict_t *xdata) +{ + return default_rmdir_failure_cbk(frame, EPERM); +} + +int +meta_default_unlink(call_frame_t *frame, xlator_t *this, loc_t *loc, int xflag, + dict_t *xdata) +{ + return default_unlink_failure_cbk(frame, EPERM); +} + +int +meta_default_mkdir(call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + mode_t umask, dict_t *xdata) +{ + return default_mkdir_failure_cbk(frame, EPERM); +} + +int +meta_default_mknod(call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, + dev_t rdev, mode_t umask, dict_t *xdata) +{ + return default_mknod_failure_cbk(frame, EPERM); +} + +int +meta_default_readlink(call_frame_t *frame, xlator_t *this, loc_t *loc, + size_t size, dict_t *xdata) +{ + struct meta_ops *ops = NULL; + strfd_t *strfd = NULL; + struct iatt iatt = {}; + int len = -1; + + ops = meta_ops_get(loc->inode, this); + if (!ops || !ops->link_fill) { + META_STACK_UNWIND(readlink, frame, -1, EPERM, 0, 0, 0); + return 0; + } + + strfd = strfd_open(); + if (!strfd) { + META_STACK_UNWIND(readlink, frame, -1, ENOMEM, 0, 0, 0); + return 0; + } + + ops->link_fill(this, loc->inode, strfd); + + meta_iatt_fill(&iatt, loc->inode, IA_IFLNK); + + if (strfd->data) { + len = strlen(strfd->data); + META_STACK_UNWIND(readlink, frame, len, 0, strfd->data, &iatt, xdata); + } else + META_STACK_UNWIND(readlink, frame, -1, ENODATA, 0, 0, 0); + + strfd_close(strfd); + + return 0; +} + +int +meta_default_access(call_frame_t *frame, xlator_t *this, loc_t *loc, + int32_t mask, dict_t *xdata) +{ + return default_access_failure_cbk(frame, EPERM); +} + +int +meta_default_ftruncate(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, dict_t *xdata) +{ + struct iatt iatt = {}; + + meta_iatt_fill(&iatt, fd->inode, IA_IFREG); + + META_STACK_UNWIND(ftruncate, frame, 0, 0, &iatt, &iatt, xdata); + + return 0; +} + +int +meta_default_getxattr(call_frame_t *frame, xlator_t *this, loc_t *loc, + const char *name, dict_t *xdata) +{ + return default_getxattr_failure_cbk(frame, EPERM); +} + +int +meta_default_xattrop(call_frame_t *frame, xlator_t *this, loc_t *loc, + gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata) +{ + return default_xattrop_failure_cbk(frame, EPERM); +} + +int +meta_default_fxattrop(call_frame_t *frame, xlator_t *this, fd_t *fd, + gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata) +{ + return default_fxattrop_failure_cbk(frame, EPERM); +} + +int +meta_default_removexattr(call_frame_t *frame, xlator_t *this, loc_t *loc, + const char *name, dict_t *xdata) +{ + return default_removexattr_failure_cbk(frame, EPERM); +} + +int +meta_default_fremovexattr(call_frame_t *frame, xlator_t *this, fd_t *fd, + const char *name, dict_t *xdata) +{ + return default_fremovexattr_failure_cbk(frame, EPERM); +} + +int +meta_default_lk(call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd, + struct gf_flock *lock, dict_t *xdata) +{ + return default_lk_failure_cbk(frame, EPERM); +} + +int +meta_default_inodelk(call_frame_t *frame, xlator_t *this, const char *volume, + loc_t *loc, int32_t cmd, struct gf_flock *lock, + dict_t *xdata) +{ + return default_inodelk_failure_cbk(frame, EPERM); +} + +int +meta_default_finodelk(call_frame_t *frame, xlator_t *this, const char *volume, + fd_t *fd, int32_t cmd, struct gf_flock *lock, + dict_t *xdata) +{ + return default_finodelk_failure_cbk(frame, EPERM); +} + +int +meta_default_entrylk(call_frame_t *frame, xlator_t *this, const char *volume, + loc_t *loc, const char *basename, entrylk_cmd cmd, + entrylk_type type, dict_t *xdata) +{ + return default_entrylk_failure_cbk(frame, EPERM); +} + +int +meta_default_fentrylk(call_frame_t *frame, xlator_t *this, const char *volume, + fd_t *fd, const char *basename, entrylk_cmd cmd, + entrylk_type type, dict_t *xdata) +{ + return default_fentrylk_failure_cbk(frame, EPERM); +} + +int +meta_default_rchecksum(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, int32_t len, dict_t *xdata) +{ + return default_rchecksum_failure_cbk(frame, EPERM); +} + +int +meta_default_readdir(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, + off_t off, dict_t *xdata) +{ + meta_fd_t *meta_fd = NULL; + int i = 0; + gf_dirent_t head; + gf_dirent_t *list = NULL; + int ret = 0; + int this_size = 0; + int filled_size = 0; + int fixed_size = 0; + int dyn_size = 0; + struct meta_dirent *fixed_dirents = NULL; + struct meta_dirent *dyn_dirents = NULL; + struct meta_dirent *dirents = NULL; + struct meta_dirent *end = NULL; + struct meta_ops *ops = NULL; + + INIT_LIST_HEAD(&head.list); + + ops = meta_ops_get(fd->inode, this); + if (!ops) + goto err; + + meta_fd = meta_fd_get(fd, this); + if (!meta_fd) + goto err; + + meta_dir_fill(this, fd); + + fixed_dirents = ops->fixed_dirents; + fixed_size = fixed_dirents_len(fixed_dirents); + + dyn_dirents = meta_fd->dirents; + dyn_size = meta_fd->size; + + for (i = off; i < (fixed_size + dyn_size);) { + if (i >= fixed_size) { + dirents = dyn_dirents + (i - fixed_size); + end = dyn_dirents + dyn_size; + } else { + dirents = fixed_dirents + i; + end = fixed_dirents + fixed_size; + } + + while (dirents < end) { + this_size = sizeof(gf_dirent_t) + strlen(dirents->name) + 1; + if (this_size + filled_size > size) + goto unwind; + + list = gf_dirent_for_name(dirents->name); + if (!list) + break; + + list->d_off = i + 1; + list->d_ino = i + 42; + switch (dirents->type) { + case IA_IFDIR: + list->d_type = DT_DIR; + break; + case IA_IFCHR: + list->d_type = DT_CHR; + break; + case IA_IFBLK: + list->d_type = DT_BLK; + break; + case IA_IFIFO: + list->d_type = DT_FIFO; + break; + case IA_IFLNK: + list->d_type = DT_LNK; + break; + case IA_IFREG: + list->d_type = DT_REG; + break; + case IA_IFSOCK: + list->d_type = DT_SOCK; + break; + case IA_INVAL: + list->d_type = DT_UNKNOWN; + break; + } + + list_add_tail(&list->list, &head.list); + ret++; + i++; + dirents++; + filled_size += this_size; + } + } + +unwind: + META_STACK_UNWIND(readdir, frame, ret, 0, &head, xdata); + + gf_dirent_free(&head); + + return 0; +err: + META_STACK_UNWIND(readdir, frame, -1, ENOMEM, 0, 0); + return 0; +} + +int +meta_default_readdirp(call_frame_t *frame, xlator_t *this, fd_t *fd, + size_t size, off_t off, dict_t *xdata) +{ + return meta_default_readdir(frame, this, fd, size, off, xdata); +} + +int +meta_default_setattr(call_frame_t *frame, xlator_t *this, loc_t *loc, + struct iatt *stbuf, int32_t valid, dict_t *xdata) +{ + return default_setattr_failure_cbk(frame, EPERM); +} + +int +meta_default_truncate(call_frame_t *frame, xlator_t *this, loc_t *loc, + off_t offset, dict_t *xdata) +{ + struct iatt iatt = {}; + + meta_iatt_fill(&iatt, loc->inode, IA_IFREG); + + META_STACK_UNWIND(truncate, frame, 0, 0, &iatt, &iatt, xdata); + + return 0; +} + +int +meta_default_stat(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata) +{ + struct iatt iatt = {}; + + meta_iatt_fill(&iatt, loc->inode, loc->inode->ia_type); + + META_STACK_UNWIND(stat, frame, 0, 0, &iatt, xdata); + + return 0; +} + +int +meta_default_lookup(call_frame_t *frame, xlator_t *this, loc_t *loc, + dict_t *xdata) +{ + struct meta_ops *ops = NULL; + struct meta_dirent *dirent = NULL; + struct meta_dirent *dp = NULL; + int i = 0; + int ret = 0; + + if (!loc->name) + return meta_inode_discover(frame, this, loc, xdata); + + ops = meta_ops_get(loc->parent, this); + if (!ops) + return default_lookup_failure_cbk(frame, EPERM); + + for (dirent = ops->fixed_dirents; dirent && dirent->name; dirent++) { + if (strcmp(dirent->name, loc->name) == 0) + goto hook; + } + + dirent = NULL; + if (ops->dir_fill) + ret = ops->dir_fill(this, loc->parent, &dp); + + for (i = 0; i < ret; i++) { + if (strcmp(dp[i].name, loc->name) == 0) { + dirent = &dp[i]; + goto hook; + } + } +hook: + if (dirent && dirent->hook) { + struct iatt parent = {}; + struct iatt iatt = {}; + + dirent->hook(frame, this, loc, xdata); + + meta_iatt_fill(&iatt, loc->inode, dirent->type); + + META_STACK_UNWIND(lookup, frame, 0, 0, loc->inode, &iatt, xdata, + &parent); + } else { + META_STACK_UNWIND(lookup, frame, -1, ENOENT, 0, 0, 0, 0); + } + + for (i = 0; i < ret; i++) + GF_FREE((void *)dp[i].name); + GF_FREE(dp); + + return 0; +} + +int +meta_default_fsetattr(call_frame_t *frame, xlator_t *this, fd_t *fd, + struct iatt *stbuf, int32_t valid, dict_t *xdata) +{ + return default_fsetattr_failure_cbk(frame, EPERM); +} + +int +meta_default_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd, + int32_t keep_size, off_t offset, size_t len, + dict_t *xdata) +{ + return default_fallocate_failure_cbk(frame, EPERM); +} + +int +meta_default_discard(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, size_t len, dict_t *xdata) +{ + return default_discard_failure_cbk(frame, EPERM); +} + +int +meta_default_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd, + off_t offset, off_t len, dict_t *xdata) +{ + return default_zerofill_failure_cbk(frame, EPERM); +} + +#define SET_META_DEFAULT_FOP(f, name) \ + do { \ + if (!f->name) \ + f->name = meta_default_##name; \ + } while (0) + +struct xlator_fops * +meta_defaults_init(struct xlator_fops *fops) +{ + SET_META_DEFAULT_FOP(fops, create); + SET_META_DEFAULT_FOP(fops, open); + SET_META_DEFAULT_FOP(fops, stat); + SET_META_DEFAULT_FOP(fops, readlink); + SET_META_DEFAULT_FOP(fops, mknod); + SET_META_DEFAULT_FOP(fops, mkdir); + SET_META_DEFAULT_FOP(fops, unlink); + SET_META_DEFAULT_FOP(fops, rmdir); + SET_META_DEFAULT_FOP(fops, symlink); + SET_META_DEFAULT_FOP(fops, rename); + SET_META_DEFAULT_FOP(fops, link); + SET_META_DEFAULT_FOP(fops, truncate); + SET_META_DEFAULT_FOP(fops, readv); + SET_META_DEFAULT_FOP(fops, writev); + SET_META_DEFAULT_FOP(fops, statfs); + SET_META_DEFAULT_FOP(fops, flush); + SET_META_DEFAULT_FOP(fops, fsync); + SET_META_DEFAULT_FOP(fops, setxattr); + SET_META_DEFAULT_FOP(fops, getxattr); + SET_META_DEFAULT_FOP(fops, fsetxattr); + SET_META_DEFAULT_FOP(fops, fgetxattr); + SET_META_DEFAULT_FOP(fops, removexattr); + SET_META_DEFAULT_FOP(fops, fremovexattr); + SET_META_DEFAULT_FOP(fops, opendir); + SET_META_DEFAULT_FOP(fops, readdir); + SET_META_DEFAULT_FOP(fops, readdirp); + SET_META_DEFAULT_FOP(fops, fsyncdir); + SET_META_DEFAULT_FOP(fops, access); + SET_META_DEFAULT_FOP(fops, ftruncate); + SET_META_DEFAULT_FOP(fops, fstat); + SET_META_DEFAULT_FOP(fops, lk); + SET_META_DEFAULT_FOP(fops, inodelk); + SET_META_DEFAULT_FOP(fops, finodelk); + SET_META_DEFAULT_FOP(fops, entrylk); + SET_META_DEFAULT_FOP(fops, fentrylk); + SET_META_DEFAULT_FOP(fops, lookup); + SET_META_DEFAULT_FOP(fops, rchecksum); + SET_META_DEFAULT_FOP(fops, xattrop); + SET_META_DEFAULT_FOP(fops, fxattrop); + SET_META_DEFAULT_FOP(fops, setattr); + SET_META_DEFAULT_FOP(fops, fsetattr); + SET_META_DEFAULT_FOP(fops, fallocate); + SET_META_DEFAULT_FOP(fops, discard); + SET_META_DEFAULT_FOP(fops, zerofill); + + return fops; +} |