Last change
on this file since 3728 was 1765, checked in by Bruno Cornec, 17 years ago |
Update to busybox 1.7.2
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-
Property svn:eol-style
set to
native
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File size:
1.4 KB
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[1765] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * lookup.c --- ext2fs directory lookup operations
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| 4 | *
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| 5 | * Copyright (C) 1993, 1994, 1994, 1995 Theodore Ts'o.
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| 6 | *
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| 7 | * %Begin-Header%
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| 8 | * This file may be redistributed under the terms of the GNU Public
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| 9 | * License.
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| 10 | * %End-Header%
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| 11 | */
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| 12 |
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| 13 | #include <stdio.h>
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| 14 | #include <string.h>
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| 15 | #if HAVE_UNISTD_H
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| 16 | #include <unistd.h>
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| 17 | #endif
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| 18 |
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| 19 | #include "ext2_fs.h"
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| 20 | #include "ext2fs.h"
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| 21 |
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| 22 | struct lookup_struct {
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| 23 | const char *name;
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| 24 | int len;
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| 25 | ext2_ino_t *inode;
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| 26 | int found;
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| 27 | };
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| 28 |
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| 29 | #ifdef __TURBOC__
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| 30 | # pragma argsused
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| 31 | #endif
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| 32 | static int lookup_proc(struct ext2_dir_entry *dirent,
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| 33 | int offset EXT2FS_ATTR((unused)),
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| 34 | int blocksize EXT2FS_ATTR((unused)),
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| 35 | char *buf EXT2FS_ATTR((unused)),
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| 36 | void *priv_data)
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| 37 | {
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| 38 | struct lookup_struct *ls = (struct lookup_struct *) priv_data;
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| 39 |
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| 40 | if (ls->len != (dirent->name_len & 0xFF))
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| 41 | return 0;
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| 42 | if (strncmp(ls->name, dirent->name, (dirent->name_len & 0xFF)))
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| 43 | return 0;
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| 44 | *ls->inode = dirent->inode;
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| 45 | ls->found++;
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| 46 | return DIRENT_ABORT;
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| 47 | }
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| 48 |
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| 49 |
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| 50 | errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
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| 51 | int namelen, char *buf, ext2_ino_t *inode)
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| 52 | {
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| 53 | errcode_t retval;
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| 54 | struct lookup_struct ls;
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| 55 |
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| 56 | EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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| 57 |
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| 58 | ls.name = name;
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| 59 | ls.len = namelen;
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| 60 | ls.inode = inode;
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| 61 | ls.found = 0;
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| 62 |
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| 63 | retval = ext2fs_dir_iterate(fs, dir, 0, buf, lookup_proc, &ls);
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| 64 | if (retval)
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| 65 | return retval;
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| 66 |
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| 67 | return (ls.found) ? 0 : EXT2_ET_FILE_NOT_FOUND;
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| 68 | }
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| 69 |
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| 70 |
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