diff options
Diffstat (limited to 'xlators/meta/src/tree.c')
| -rw-r--r-- | xlators/meta/src/tree.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/xlators/meta/src/tree.c b/xlators/meta/src/tree.c deleted file mode 100644 index dacbd665a4a..00000000000 --- a/xlators/meta/src/tree.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - Copyright (c) 2006-2012 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 _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> -#include <string.h> - -#include "glusterfs.h" -#include "xlator.h" - -#include "meta.h" -#include "meta-mem-types.h" - -static int -is_meta_path (const char *path) -{ - while (*path == '/') - path++; - if (!strncmp (path, ".meta", strlen (".meta"))) - return 1; - return 0; -} - -struct stat * -new_stbuf (void) -{ - static int next_inode = 0; - struct stat *stbuf = GF_CALLOC (1, sizeof (struct stat), gf_meta_mt_stat); - - ERR_ABORT (stbuf); - - stbuf->st_dev = 0; - stbuf->st_ino = next_inode++; - stbuf->st_mode = S_IRUSR | S_IRGRP | S_IROTH; - stbuf->st_nlink = 1; - stbuf->st_uid = 0; - stbuf->st_gid = 0; - stbuf->st_rdev = 0; - stbuf->st_size = 0; - stbuf->st_blksize = 0; - stbuf->st_blocks = 0; - stbuf->st_atime = time (NULL); - stbuf->st_atim.tv_nsec = 0; - stbuf->st_mtime = stbuf->st_atime; - stbuf->st_mtim.tv_nsec = 0; - stbuf->st_ctime = stbuf->st_ctime; - stbuf->st_ctim.tv_nsec = 0; - - return stbuf; -} - -/* find an entry among the siblings of an entry */ -static meta_dirent_t * -find_entry (meta_dirent_t *node, const char *dir) -{ - meta_dirent_t *trav = node; - while (trav) { - if (!strcmp (trav->name, dir)) - return trav; - trav = trav->next; - } - return NULL; -} - -/* - * Return the meta_dirent_t corresponding to the pathname. - * - * If pathname does not exist in the meta tree, try to return - * its highest parent that does exist. The part of the - * pathname that is left over is returned in the value-result - * variable {remain}. - * For example, for "/.meta/xlators/brick1/view/foo/bar/baz", - * return the entry for "/.meta/xlators/brick1/view" - * and set remain to "/bar/baz" - */ - -meta_dirent_t * -lookup_meta_entry (meta_dirent_t *root, const char *path, - char **remain) -{ - char *_path = gf_strdup (path); - - if (!is_meta_path (path)) - return NULL; - - meta_dirent_t *trav = root; - char *dir = strtok (_path, "/"); - dir = strtok (NULL, "/"); - - while (dir) { - meta_dirent_t *ntrav; - ntrav = find_entry (trav->children, dir); - if (!ntrav) { - /* we have reached bottom of the meta tree. - Unknown dragons lie further below */ - if (remain) { - char *piece = dir; - while (piece) { - char *tmp = *remain; - if (*remain) - gf_asprintf (remain, "/%s/%s", *remain, piece); - else - gf_asprintf (remain, "/%s", piece); - GF_FREE (tmp); - piece = strtok (NULL, "/"); - } - } - return trav; - } - dir = strtok (NULL, "/"); - trav = ntrav; - } - - GF_FREE (_path); - return trav; -} - -meta_dirent_t * -insert_meta_entry (meta_dirent_t *root, const char *path, - int type, struct stat *stbuf, struct xlator_fops *fops) -{ - if (!is_meta_path (path)) - return NULL; - char *slashpos = strrchr (path, '/'); - char *dir = strndup (path, slashpos - path); - meta_dirent_t *parent = lookup_meta_entry (root, dir, NULL); - if (!dir) - return NULL; - - meta_dirent_t *new = GF_CALLOC (1, sizeof (meta_dirent_t), - gf_meta_mt_meta_dirent_t); - ERR_ABORT (new); - new->name = gf_strdup (slashpos+1); - new->type = type; - new->parent = parent; - new->next = parent->children; - parent->children = new; - if (stbuf) - new->stbuf = stbuf; - else - new->stbuf = new_stbuf (); - - new->stbuf->st_mode |= type; - new->fops = fops; - return new; -} - -int main (void) -{ - meta_dirent_t *root = GF_CALLOC (1, sizeof (meta_dirent_t), - gf_meta_mt_meta_dirent_t); - ERR_ABORT (root); - root->name = gf_strdup (".meta"); - - insert_meta_entry (root, "/.meta/version", S_IFREG, NULL, NULL); - return 0; -} |