diff options
Diffstat (limited to 'xlators/storage/posix/src/posix-handle.h')
| -rw-r--r-- | xlators/storage/posix/src/posix-handle.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/xlators/storage/posix/src/posix-handle.h b/xlators/storage/posix/src/posix-handle.h new file mode 100644 index 000000000..b22149f63 --- /dev/null +++ b/xlators/storage/posix/src/posix-handle.h @@ -0,0 +1,148 @@ +/* + Copyright (c) 2011 Gluster, Inc. <http://www.gluster.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_HANDLE_H +#define _POSIX_HANDLE_H + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include <sys/types.h> +#include "xlator.h" + + +#define LOC_HAS_ABSPATH(loc) ((loc) && (loc->path) && (loc->path[0] == '/')) + +#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) + + +#define MAKE_HANDLE_PATH(var, this, gfid, base) do { \ + int __len; \ + __len = posix_handle_path (this, gfid, base, NULL, 0); \ + if (__len <= 0) \ + break; \ + var = alloca (__len); \ + __len = posix_handle_path (this, gfid, base, var, __len); \ + } while (0) + + +#define MAKE_HANDLE_GFID_PATH(var, this, gfid, base) do { \ + int __len = 0; \ + __len = posix_handle_gfid_path (this, gfid, base, NULL, 0); \ + if (__len <= 0) \ + break; \ + var = alloca (__len); \ + __len = posix_handle_gfid_path (this, gfid, base, var, __len); \ + } while (0) + + +#define MAKE_HANDLE_RELPATH(var, this, gfid, base) do { \ + int __len; \ + __len = posix_handle_relpath (this, gfid, base, NULL, 0); \ + if (__len <= 0) \ + break; \ + var = alloca (__len); \ + __len = posix_handle_relpath (this, gfid, base, var, __len); \ + } while (0) + + +#define MAKE_INODE_HANDLE(rpath, this, loc, iatt_p) do { \ + if (uuid_is_null (loc->gfid)) { \ + gf_log (this->name, GF_LOG_ERROR, \ + "null gfid for path %s", loc->path); \ + break; \ + } \ + errno = 0; \ + op_ret = posix_istat (this, loc->gfid, NULL, iatt_p); \ + if (errno != ELOOP) { \ + MAKE_HANDLE_PATH (rpath, this, loc->gfid, NULL); \ + break; \ + } \ + /* __ret == -1 && errno == ELOOP */ \ + if (LOC_HAS_ABSPATH (loc)) { \ + MAKE_REAL_PATH (rpath, this, loc->path); \ + op_ret = posix_pstat (this, loc->gfid, rpath, iatt_p); \ + break; \ + } \ + } while (0) + + +#define MAKE_ENTRY_HANDLE(entp, parp, this, loc, ent_p) do { \ + char *__parp; \ + \ + if (uuid_is_null (loc->pargfid) || !loc->name) { \ + gf_log (this->name, GF_LOG_ERROR, \ + "null pargfid/name for path %s", loc->path); \ + break; \ + } \ + \ + errno = 0; \ + op_ret = posix_istat (this, loc->pargfid, loc->name, ent_p); \ + if (errno != ELOOP) { \ + MAKE_HANDLE_PATH (parp, this, loc->pargfid, NULL); \ + MAKE_HANDLE_PATH (entp, this, loc->pargfid, loc->name); \ + break; \ + } \ + /* __ret == -1 && errno == ELOOP */ \ + if (LOC_HAS_ABSPATH (loc)) { \ + MAKE_REAL_PATH (entp, this, loc->path); \ + __parp = strdupa (entp); \ + parp = dirname (__parp); \ + op_ret = posix_pstat (this, NULL, entp, ent_p); \ + break; \ + } \ + /* expand ELOOP */ \ + } while (0) + + + +int +posix_handle_path (xlator_t *this, uuid_t gfid, const char *basename, char *buf, + size_t len); +int +posix_handle_path_safe (xlator_t *this, uuid_t gfid, const char *basename, + char *buf, size_t len); + +int +posix_handle_gfid_path (xlator_t *this, uuid_t gfid, const char *basename, + char *buf, size_t len); + +int +posix_handle_hard (xlator_t *this, const char *path, uuid_t gfid, + struct stat *buf); + + +int +posix_handle_soft (xlator_t *this, const char *real_path, loc_t *loc, + uuid_t gfid, struct stat *buf); + +int +posix_handle_unset (xlator_t *this, uuid_t gfid, const char *basename); + +int posix_handle_mkdir_hashes (xlator_t *this, const char *newpath); + +int posix_handle_init (xlator_t *this); + +#endif /* !_POSIX_HANDLE_H */ |