diff options
Diffstat (limited to 'xlators/meta/src/meta-defaults.c')
| -rw-r--r-- | xlators/meta/src/meta-defaults.c | 611 |
1 files changed, 611 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..f2b637fa28a --- /dev/null +++ b/xlators/meta/src/meta-defaults.c @@ -0,0 +1,611 @@ +/* + 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. +*/ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "xlator.h" +#include "defaults.h" + +#include "meta-mem-types.h" +#include "meta.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) +{ + 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; + size_t 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); + + 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); + + 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 = { }; + + ops = meta_ops_get (loc->inode, this); + if (!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) + META_STACK_UNWIND (readlink, frame, strlen (strfd->data), 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) +{ + return default_ftruncate_failure_cbk (frame, EPERM); +} + +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) +{ + return default_truncate_failure_cbk (frame, EPERM); +} + +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; +} |