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/*
Copyright (c) 2011-2012 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 _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 HANDLE_ABSPATH_LEN(this) (POSIX_BASE_PATH_LEN(this) + \
SLEN("/" GF_HIDDEN_PATH "/00/00/" \
UUID0_STR) + 1)
#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_HANDLE_ABSPATH(var, this, gfid) do { \
struct posix_private * __priv = this->private; \
int __len = HANDLE_ABSPATH_LEN(this); \
var = alloca(__len); \
snprintf(var, __len, "%s/" GF_HIDDEN_PATH "/%02x/%02x/%s", \
__priv->base_path, gfid[0], gfid[1], uuid_utoa(gfid)); \
} 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; \
} \
if (LOC_HAS_ABSPATH (loc)) { \
MAKE_REAL_PATH (rpath, this, loc->path); \
op_ret = posix_pstat (this, loc->gfid, rpath, iatt_p); \
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 */ \
} 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; \
} \
\
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; \
} \
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 */ \
/* 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);
int posix_create_link_if_gfid_exists (xlator_t *this, uuid_t gfid,
char *real_path);
int
posix_handle_trash_init (xlator_t *this);
#endif /* !_POSIX_HANDLE_H */
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