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-rw-r--r--xlators/storage/posix/src/posix-handle.h148
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
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+++ 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 */