source: branches/stable/mindi-busybox/e2fsprogs/ext2fs/getsectsize.c @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 1.0 KB
Line 
1/*
2 * getsectsize.c --- get the sector size of a device.
3 *
4 * Copyright (C) 1995, 1995 Theodore Ts'o.
5 * Copyright (C) 2003 VMware, Inc.
6 *
7 * %Begin-Header%
8 * This file may be redistributed under the terms of the GNU Public
9 * License.
10 * %End-Header%
11 */
12
13#include <stdio.h>
14#if HAVE_UNISTD_H
15#include <unistd.h>
16#endif
17#if HAVE_ERRNO_H
18#include <errno.h>
19#endif
20#include <fcntl.h>
21#ifdef HAVE_LINUX_FD_H
22#include <sys/ioctl.h>
23#include <linux/fd.h>
24#endif
25
26#if defined(__linux__) && defined(_IO) && !defined(BLKSSZGET)
27#define BLKSSZGET  _IO(0x12,104)/* get block device sector size */
28#endif
29
30#include "ext2_fs.h"
31#include "ext2fs.h"
32
33/*
34 * Returns the number of blocks in a partition
35 */
36errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize)
37{
38    int fd;
39
40#ifdef CONFIG_LFS
41    fd = open64(file, O_RDONLY);
42#else
43    fd = open(file, O_RDONLY);
44#endif
45    if (fd < 0)
46        return errno;
47
48#ifdef BLKSSZGET
49    if (ioctl(fd, BLKSSZGET, sectsize) >= 0) {
50        close(fd);
51        return 0;
52    }
53#endif
54    *sectsize = 0;
55    close(fd);
56    return 0;
57}
Note: See TracBrowser for help on using the repository browser.