diff options
Diffstat (limited to 'xlators/storage/posix/src/posix-inode-handle.h')
| -rw-r--r-- | xlators/storage/posix/src/posix-inode-handle.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/xlators/storage/posix/src/posix-inode-handle.h b/xlators/storage/posix/src/posix-inode-handle.h new file mode 100644 index 00000000000..36c47f2bebc --- /dev/null +++ b/xlators/storage/posix/src/posix-inode-handle.h @@ -0,0 +1,118 @@ +/* + Copyright (c) 2011-2017 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_INODE_HANDLE_H +#define _POSIX_INODE_HANDLE_H + +#include <limits.h> +#include <sys/types.h> +#include <glusterfs/gf-dirent.h> +#include "posix.h" + +/* From Open Group Base Specifications Issue 6 */ +#ifndef _XOPEN_PATH_MAX +#define _XOPEN_PATH_MAX 1024 +#endif + +#define TRASH_DIR "landfill" + +#define UUID0_STR "00000000-0000-0000-0000-000000000000" +#define SLEN(str) (sizeof(str) - 1) + +#define LOC_HAS_ABSPATH(loc) (loc && (loc->path) && (loc->path[0] == '/')) +#define LOC_IS_DIR(loc) \ + (loc && (loc->inode) && (loc->inode->ia_type == IA_IFDIR)) +#define MAKE_REAL_PATH(var, this, path) \ + do { \ + size_t path_len = strlen(path); \ + size_t var_len = path_len + POSIX_BASE_PATH_LEN(this) + 1; \ + if (POSIX_PATH_MAX(this) != -1 && var_len >= POSIX_PATH_MAX(this)) { \ + var = alloca(path_len + 1); \ + strcpy(var, (path[0] == '/') ? path + 1 : path); \ + } else { \ + var = alloca(var_len); \ + 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 = 0; \ + int tot = PATH_MAX; \ + var = alloca(tot); \ + __len = posix_handle_path(this, gfid, base, var, tot); \ + if (__len <= 0) { \ + var = NULL; \ + } \ + } while (0) + +/* TODO: it is not a good idea to change a variable which + is not passed to the macro.. Fix it later */ +#define MAKE_INODE_HANDLE(rpath, this, loc, iatt_p) \ + do { \ + if (!this->private) { \ + op_ret = -1; \ + gf_msg("make_inode_handle", GF_LOG_ERROR, 0, \ + P_MSG_INODE_HANDLE_CREATE, \ + "private is NULL, fini is already called"); \ + break; \ + } \ + if (gf_uuid_is_null(loc->gfid)) { \ + op_ret = -1; \ + gf_msg(this->name, GF_LOG_ERROR, 0, P_MSG_INODE_HANDLE_CREATE, \ + "null gfid for path %s", (loc)->path); \ + break; \ + } \ + if (LOC_IS_DIR(loc) && LOC_HAS_ABSPATH(loc)) { \ + MAKE_REAL_PATH(rpath, this, (loc)->path); \ + op_ret = posix_pstat(this, (loc)->inode, (loc)->gfid, rpath, \ + iatt_p, _gf_false); \ + break; \ + } \ + errno = 0; \ + op_ret = posix_istat(this, loc->inode, loc->gfid, NULL, iatt_p); \ + if (errno != ELOOP) { \ + MAKE_HANDLE_PATH(rpath, this, (loc)->gfid, NULL); \ + if (!rpath) { \ + op_ret = -1; \ + gf_msg(this->name, GF_LOG_ERROR, errno, \ + P_MSG_INODE_HANDLE_CREATE, \ + "Failed to create inode handle " \ + "for path %s", \ + (loc)->path); \ + } \ + break; \ + } /* __ret == -1 && errno == ELOOP */ \ + else { \ + op_ret = -1; \ + } \ + } while (0) + +#define POSIX_ANCESTRY_PATH (1 << 0) +#define POSIX_ANCESTRY_DENTRY (1 << 1) + +int +posix_handle_path(xlator_t *this, uuid_t gfid, const char *basename, char *buf, + size_t len); + +int +posix_make_ancestryfromgfid(xlator_t *this, char *path, int pathsize, + gf_dirent_t *head, int type, uuid_t gfid, + const size_t handle_size, + const char *priv_base_path, inode_table_t *table, + inode_t **parent, dict_t *xdata, int32_t *op_errno); + +int +posix_handle_init(xlator_t *this); + +int +posix_handle_trash_init(xlator_t *this); + +#endif /* !_POSIX_INODE_HANDLE_H */ |