diff options
Diffstat (limited to 'xlators/features/path-convertor/src/path.c')
| -rw-r--r-- | xlators/features/path-convertor/src/path.c | 1217 |
1 files changed, 1217 insertions, 0 deletions
diff --git a/xlators/features/path-convertor/src/path.c b/xlators/features/path-convertor/src/path.c new file mode 100644 index 00000000000..41ef1d8a823 --- /dev/null +++ b/xlators/features/path-convertor/src/path.c @@ -0,0 +1,1217 @@ +/* + Copyright (c) 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/>. +*/ + +/* TODO: add gf_log to all the cases returning errors */ + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +/** + * xlators/features/path-translator: + * This translator converts the path it gets into user specified targets. + */ + +#include <sys/types.h> +#include <regex.h> +#include <time.h> +#include <errno.h> +#include "glusterfs.h" +#include "xlator.h" + +typedef struct path_private +{ + int32_t this_len; + int32_t start_off; + int32_t end_off; + char *this; + char *that; + char *path; + regex_t *preg; +} path_private_t; + +static char * +name_this_to_that (xlator_t *xl, const char *path, const char *name) +{ + path_private_t *priv = xl->private; + char priv_path[ZR_PATH_MAX] = {0,}; + char *tmp_name = NULL; + int32_t path_len = strlen (path); + int32_t name_len = strlen (name) - ZR_FILE_CONTENT_STRLEN; + int32_t total_len = path_len + name_len; + int32_t i = 0, j = 0; + + if (path_len >= priv->end_off) + return (char *)name; + + if (priv->end_off && (total_len > priv->end_off)) { + j = priv->start_off; + tmp_name = CALLOC (1, (total_len + ZR_FILE_CONTENT_STRLEN)); + ERR_ABORT (tmp_name); + + /* Get the complete path for the file first */ + strcpy (tmp_name, path); + strcat (tmp_name, name + ZR_FILE_CONTENT_STRLEN); + + strncpy (priv_path, tmp_name, priv->start_off); + for (i = priv->start_off; i < priv->end_off; i++) { + if (tmp_name[i] == '/') + continue; + priv_path[j++] = tmp_name[i]; + } + memcpy ((priv_path + j), + (tmp_name + priv->end_off), + (total_len - priv->end_off)); + priv_path[(total_len - (priv->end_off - j))] = '\0'; + + strcpy (tmp_name, ZR_FILE_CONTENT_STR); + strcat (tmp_name, priv_path); + + return tmp_name; + } + + return (char *)name; +} + +/* This function should return + * NULL - + * converted path - if path match + * same path - if it doesn't match + */ +static char * +path_this_to_that (xlator_t *xl, const char *path) +{ + path_private_t *priv = xl->private; + char *priv_path = NULL; + int32_t path_len = strlen (path); + int32_t i = 0, j = 0; + + if (priv->end_off && (path_len > priv->start_off)) { + priv_path = CALLOC (1, path_len); + ERR_ABORT (priv_path); + + if (priv->start_off && (path_len > priv->start_off)) + memcpy (priv_path, path, priv->start_off); + if (path_len > priv->end_off) { + j = priv->start_off; + for (i = priv->start_off; i < priv->end_off; i++) { + if (path[i] == '/') + continue; + priv_path[j++] = path[i]; + } + memcpy ((priv_path + j), + (path + priv->end_off), + (path_len - priv->end_off)); + priv_path[(path_len - (priv->end_off - j))] = '\0'; + } + return priv_path; + } + return (char *)path; +} + +int32_t +path_create_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + fd_t *fd, + inode_t *inode, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf); + return 0; +} + +int32_t +path_open_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + fd_t *fd) +{ + STACK_UNWIND (frame, op_ret, op_errno, fd); + return 0; +} + +int32_t +path_getdents_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + dir_entry_t *entries, + int32_t count) +{ + STACK_UNWIND (frame, op_ret, op_errno, entries, count); + return 0; +} + +int32_t +path_readdir_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + gf_dirent_t *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, buf); + return 0; +} + + +int32_t +path_readlink_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + const char *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, buf); + return 0; +} + +int32_t +path_lookup_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + inode_t *inode, + struct stat *buf, + dict_t *xattr) +{ + STACK_UNWIND (frame, op_ret, op_errno, inode, buf, xattr); + return 0; +} + + +int32_t +path_symlink_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + inode_t *inode, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, inode, buf); + return 0; +} + +int32_t +path_mknod_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + inode_t *inode, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, inode, buf); + return 0; +} + + +int32_t +path_mkdir_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + inode_t *inode, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, inode, buf); + return 0; +} + +int32_t +path_link_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + inode_t *inode, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, inode, buf); + return 0; +} + +int32_t +path_opendir_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + fd_t *fd) +{ + STACK_UNWIND (frame, op_ret, op_errno, fd); + return 0; +} + + +int32_t +path_common_buf_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + struct stat *buf) +{ + STACK_UNWIND (frame, op_ret, op_errno, buf); + return 0; +} + +int32_t +path_common_dict_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + dict_t *dict) +{ + STACK_UNWIND (frame, op_ret, op_errno, dict); + return 0; +} + +int32_t +path_common_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno) +{ + STACK_UNWIND (frame, op_ret, op_errno); + return 0; +} + +/* */ +int32_t +path_lookup (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + dict_t *xattr_req) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, path_lookup_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->lookup, + loc, xattr_req); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_stat (call_frame_t *frame, + xlator_t *this, + loc_t *loc) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->stat, + loc); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_readlink (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + size_t size) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_readlink_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->readlink, + loc, + size); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_mknod (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + mode_t mode, + dev_t dev) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_mknod_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->mknod, + loc, + mode, + dev); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_mkdir (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + mode_t mode) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_mkdir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->mkdir, + loc, + mode); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_unlink (call_frame_t *frame, + xlator_t *this, + loc_t *loc) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->unlink, + loc); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_rmdir (call_frame_t *frame, + xlator_t *this, + loc_t *loc) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->rmdir, + loc); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_symlink (call_frame_t *frame, + xlator_t *this, + const char *linkpath, + loc_t *loc) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_symlink_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->symlink, + linkpath, + loc); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_rename (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc) +{ + char *oldloc_path = (char *)oldloc->path; + char *tmp_oldloc_path = NULL; + + char *newloc_path = (char *)newloc->path; + char *tmp_newloc_path = NULL; + + if (!(tmp_oldloc_path = path_this_to_that (this, oldloc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + oldloc->path = tmp_oldloc_path; + + if (!(tmp_newloc_path = path_this_to_that (this, newloc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + newloc->path = tmp_newloc_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->rename, + oldloc, + newloc); + + oldloc->path = oldloc_path; + if (tmp_oldloc_path != oldloc_path) + FREE (tmp_oldloc_path); + + newloc->path = newloc_path; + if (tmp_newloc_path != newloc_path) + FREE (tmp_newloc_path); + + return 0; +} + +int32_t +path_link (call_frame_t *frame, + xlator_t *this, + loc_t *oldloc, + loc_t *newloc) +{ + char *oldloc_path = (char *)oldloc->path; + char *tmp_oldloc_path = NULL; + + char *newloc_path = (char *)newloc->path; + char *tmp_newloc_path = NULL; + + if (!(tmp_oldloc_path = path_this_to_that (this, oldloc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + oldloc->path = tmp_oldloc_path; + + if (!(tmp_newloc_path = path_this_to_that (this, newloc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + newloc->path = tmp_newloc_path; + + STACK_WIND (frame, + path_link_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->link, + oldloc, + newloc); + + oldloc->path = oldloc_path; + if (tmp_oldloc_path != oldloc_path) + FREE (tmp_oldloc_path); + + newloc->path = newloc_path; + if (tmp_newloc_path != newloc_path) + FREE (tmp_newloc_path); + + return 0; +} + +int32_t +path_chmod (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + mode_t mode) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->chmod, + loc, + mode); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_chown (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + uid_t uid, + gid_t gid) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->chown, + loc, + uid, + gid); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_truncate (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + off_t offset) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->truncate, + loc, + offset); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_utimens (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + struct timespec tv[2]) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_buf_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->utimens, + loc, + tv); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_open (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t flags, + fd_t *fd) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_open_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->open, + loc, + flags, + fd); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_create (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t flags, + mode_t mode, + fd_t *fd) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_create_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->create, + loc, + flags, + mode, + fd); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_setxattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + dict_t *dict, + int32_t flags) +{ + char *tmp_name = NULL; + data_pair_t *trav = dict->members_list; + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + if (ZR_FILE_CONTENT_REQUEST(trav->key)) { + tmp_name = name_this_to_that (this, loc->path, trav->key); + if (tmp_name != trav->key) { + trav->key = tmp_name; + } else { + tmp_name = NULL; + } + } + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->setxattr, + loc, + dict, + flags); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + if (tmp_name) + FREE (tmp_name); + + return 0; +} + +int32_t +path_getxattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + const char *name) +{ + char *tmp_name = (char *)name; + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + if (ZR_FILE_CONTENT_REQUEST(name)) { + tmp_name = name_this_to_that (this, loc->path, name); + } + + STACK_WIND (frame, + path_common_dict_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->getxattr, + loc, + tmp_name); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + if (tmp_name != name) + FREE (tmp_name); + + return 0; +} + +int32_t +path_removexattr (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + const char *name) +{ + char *tmp_name = (char *)name; + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + if (ZR_FILE_CONTENT_REQUEST(name)) { + tmp_name = name_this_to_that (this, loc->path, name); + } + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->removexattr, + loc, + tmp_name); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + if (tmp_name != name) + FREE (tmp_name); + + return 0; +} + +int32_t +path_opendir (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + fd_t *fd) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_opendir_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->opendir, + loc, + fd); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_access (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t mask) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->access, + loc, + mask); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_checksum_cbk (call_frame_t *frame, + void *cookie, + xlator_t *this, + int32_t op_ret, + int32_t op_errno, + uint8_t *fchecksum, + uint8_t *dchecksum) +{ + STACK_UNWIND (frame, op_ret, op_errno, fchecksum, dchecksum); + return 0; +} + +int32_t +path_checksum (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + int32_t flag) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_checksum_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->checksum, + loc, + flag); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + + +int32_t +path_entrylk (call_frame_t *frame, xlator_t *this, + loc_t *loc, const char *basename, + entrylk_cmd cmd, entrylk_type type) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->entrylk, + loc, basename, cmd, type); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + +int32_t +path_inodelk (call_frame_t *frame, xlator_t *this, + loc_t *loc, int32_t cmd, struct flock *lock) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->inodelk, + loc, cmd, lock); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + + +int32_t +path_xattrop (call_frame_t *frame, + xlator_t *this, + loc_t *loc, + gf_xattrop_flags_t flags, + dict_t *dict) +{ + char *loc_path = (char *)loc->path; + char *tmp_path = NULL; + + if (!(tmp_path = path_this_to_that (this, loc->path))) { + STACK_UNWIND (frame, -1, ENOENT, NULL, NULL); + return 0; + } + loc->path = tmp_path; + + STACK_WIND (frame, + path_common_dict_cbk, + FIRST_CHILD(this), + FIRST_CHILD(this)->fops->xattrop, + loc, + flags, + dict); + + loc->path = loc_path; + if (tmp_path != loc_path) + FREE (tmp_path); + + return 0; +} + + +int32_t +init (xlator_t *this) +{ + dict_t *options = this->options; + path_private_t *priv = NULL; + + if (!this->children || this->children->next) { + gf_log (this->name, GF_LOG_ERROR, + "path translator requires exactly one subvolume"); + return -1; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "dangling volume. check volfile "); + } + + priv = CALLOC (1, sizeof (*priv)); + ERR_ABORT (priv); + if (dict_get (options, "start-offset")) { + priv->start_off = data_to_int32 (dict_get (options, + "start-offset")); + } + if (dict_get (options, "end-offset")) { + priv->end_off = data_to_int32 (dict_get (options, + "end-offset")); + } + + if (dict_get (options, "regex")) { + int32_t ret = 0; + priv->preg = CALLOC (1, sizeof (regex_t)); + ERR_ABORT (priv->preg); + ret = regcomp (priv->preg, + data_to_str (dict_get (options, "regex")), + REG_EXTENDED); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, + "Failed to compile the 'option regex'"); + FREE (priv); + return -1; + } + if (dict_get (options, "replace-with")) { + priv->that = data_to_str (dict_get (options, + "replace-with")); + } else { + priv->that = ""; + } + } + + this->private = priv; + return 0; +} + +void +fini (xlator_t *this) +{ + return; +} + +struct xlator_fops fops = { + .stat = path_stat, + .readlink = path_readlink, + .mknod = path_mknod, + .mkdir = path_mkdir, + .unlink = path_unlink, + .rmdir = path_rmdir, + .symlink = path_symlink, + .rename = path_rename, + .link = path_link, + .chmod = path_chmod, + .chown = path_chown, + .truncate = path_truncate, + .utimens = path_utimens, + .open = path_open, + .setxattr = path_setxattr, + .getxattr = path_getxattr, + .removexattr = path_removexattr, + .opendir = path_opendir, + .access = path_access, + .create = path_create, + .lookup = path_lookup, + .checksum = path_checksum, + .xattrop = path_xattrop, + .entrylk = path_entrylk, + .inodelk = path_inodelk, +}; + + +struct xlator_mops mops = { +}; + + +struct xlator_cbks cbks = { +}; + +struct volume_options options[] = { + { .key = {"start-offset"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = 4095 + }, + { .key = {"end-offset"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .max = 4096 + }, + { .key = {"replace-with"}, + .type = GF_OPTION_TYPE_ANY + }, + { .key = {NULL} }, +}; |