Last change
on this file since 3439 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:
1.0 KB
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[1765] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * getsectsize.c --- get the sector size of a device.
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| 4 | *
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| 5 | * Copyright (C) 1995, 1995 Theodore Ts'o.
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| 6 | * Copyright (C) 2003 VMware, Inc.
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| 7 | *
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| 8 | * %Begin-Header%
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| 9 | * This file may be redistributed under the terms of the GNU Public
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| 10 | * License.
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| 11 | * %End-Header%
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| 12 | */
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| 13 |
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| 14 | #include <stdio.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 | #if HAVE_ERRNO_H
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| 19 | #include <errno.h>
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| 20 | #endif
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| 21 | #include <fcntl.h>
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| 22 | #ifdef HAVE_LINUX_FD_H
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| 23 | #include <sys/ioctl.h>
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| 24 | #include <linux/fd.h>
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| 25 | #endif
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| 26 |
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| 27 | #if defined(__linux__) && defined(_IO) && !defined(BLKSSZGET)
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| 28 | #define BLKSSZGET _IO(0x12,104)/* get block device sector size */
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| 29 | #endif
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| 30 |
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| 31 | #include "ext2_fs.h"
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| 32 | #include "ext2fs.h"
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| 33 |
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| 34 | /*
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| 35 | * Returns the number of blocks in a partition
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| 36 | */
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| 37 | errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize)
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| 38 | {
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| 39 | int fd;
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| 40 |
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| 41 | #ifdef CONFIG_LFS
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| 42 | fd = open64(file, O_RDONLY);
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| 43 | #else
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| 44 | fd = open(file, O_RDONLY);
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| 45 | #endif
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| 46 | if (fd < 0)
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| 47 | return errno;
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| 48 |
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| 49 | #ifdef BLKSSZGET
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| 50 | if (ioctl(fd, BLKSSZGET, sectsize) >= 0) {
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| 51 | close(fd);
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| 52 | return 0;
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| 53 | }
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| 54 | #endif
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| 55 | *sectsize = 0;
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| 56 | close(fd);
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| 57 | return 0;
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| 58 | }
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