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-rw-r--r--e2fslib/namei.c205
1 files changed, 0 insertions, 205 deletions
diff --git a/e2fslib/namei.c b/e2fslib/namei.c
deleted file mode 100644
index 18be0f1..0000000
--- a/e2fslib/namei.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- * namei.c --- ext2fs directory lookup operations
- *
- * Copyright (C) 1993, 1994, 1994, 1995 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-/* #define NAMEI_DEBUG */
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-static errcode_t open_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t base,
- const char *pathname, size_t pathlen, int follow,
- int link_count, char *buf, ext2_ino_t *res_inode);
-
-static errcode_t follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t dir,
- ext2_ino_t inode, int link_count,
- char *buf, ext2_ino_t *res_inode)
-{
- char *pathname;
- char *buffer = 0;
- errcode_t retval;
- struct ext2_inode ei;
-
-#ifdef NAMEI_DEBUG
- printf("follow_link: root=%lu, dir=%lu, inode=%lu, lc=%d\n",
- root, dir, inode, link_count);
-
-#endif
- retval = ext2fs_read_inode (fs, inode, &ei);
- if (retval) return retval;
- if (!LINUX_S_ISLNK (ei.i_mode)) {
- *res_inode = inode;
- return 0;
- }
- if (link_count++ > 5) {
- return EXT2_ET_SYMLINK_LOOP;
- }
- if (ei.i_blocks) {
- retval = ext2fs_get_mem(fs->blocksize, (void **) &buffer);
- if (retval)
- return retval;
- retval = io_channel_read_blk(fs->io, ei.i_block[0], 1, buffer);
- if (retval) {
- ext2fs_free_mem((void **) &buffer);
- return retval;
- }
- pathname = buffer;
- } else
- pathname = (char *)&(ei.i_block[0]);
- retval = open_namei(fs, root, dir, pathname, ei.i_size, 1,
- link_count, buf, res_inode);
- if (buffer)
- ext2fs_free_mem((void **) &buffer);
- return retval;
-}
-
-/*
- * This routine interprets a pathname in the context of the current
- * directory and the root directory, and returns the inode of the
- * containing directory, and a pointer to the filename of the file
- * (pointing into the pathname) and the length of the filename.
- */
-static errcode_t dir_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t dir,
- const char *pathname, int pathlen,
- int link_count, char *buf,
- const char **name, int *namelen,
- ext2_ino_t *res_inode)
-{
- char c;
- const char *thisname;
- int len;
- ext2_ino_t inode;
- errcode_t retval;
-
- if ((c = *pathname) == '/') {
- dir = root;
- pathname++;
- pathlen--;
- }
- while (1) {
- thisname = pathname;
- for (len=0; --pathlen >= 0;len++) {
- c = *(pathname++);
- if (c == '/')
- break;
- }
- if (pathlen < 0)
- break;
- retval = ext2fs_lookup (fs, dir, thisname, len, buf, &inode);
- if (retval) return retval;
- retval = follow_link (fs, root, dir, inode,
- link_count, buf, &dir);
- if (retval) return retval;
- }
- *name = thisname;
- *namelen = len;
- *res_inode = dir;
- return 0;
-}
-
-static errcode_t open_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t base,
- const char *pathname, size_t pathlen, int follow,
- int link_count, char *buf, ext2_ino_t *res_inode)
-{
- const char *basename;
- int namelen;
- ext2_ino_t dir, inode;
- errcode_t retval;
-
-#ifdef NAMEI_DEBUG
- printf("open_namei: root=%lu, dir=%lu, path=%*s, lc=%d\n",
- root, base, pathlen, pathname, link_count);
-#endif
- retval = dir_namei(fs, root, base, pathname, pathlen,
- link_count, buf, &basename, &namelen, &dir);
- if (retval) return retval;
- if (!namelen) { /* special case: '/usr/' etc */
- *res_inode=dir;
- return 0;
- }
- retval = ext2fs_lookup (fs, dir, basename, namelen, buf, &inode);
- if (retval)
- return retval;
- if (follow) {
- retval = follow_link(fs, root, dir, inode, link_count,
- buf, &inode);
- if (retval)
- return retval;
- }
-#ifdef NAMEI_DEBUG
- printf("open_namei: (link_count=%d) returns %lu\n",
- link_count, inode);
-#endif
- *res_inode = inode;
- return 0;
-}
-
-errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, (void **) &buf);
- if (retval)
- return retval;
-
- retval = open_namei(fs, root, cwd, name, strlen(name), 0, 0,
- buf, inode);
-
- ext2fs_free_mem((void **) &buf);
- return retval;
-}
-
-errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- const char *name, ext2_ino_t *inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, (void **) &buf);
- if (retval)
- return retval;
-
- retval = open_namei(fs, root, cwd, name, strlen(name), 1, 0,
- buf, inode);
-
- ext2fs_free_mem((void **) &buf);
- return retval;
-}
-
-errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd,
- ext2_ino_t inode, ext2_ino_t *res_inode)
-{
- char *buf;
- errcode_t retval;
-
- EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
-
- retval = ext2fs_get_mem(fs->blocksize, (void **) &buf);
- if (retval)
- return retval;
-
- retval = follow_link(fs, root, cwd, inode, 0, buf, res_inode);
-
- ext2fs_free_mem((void **) &buf);
- return retval;
-}
-