Last change
on this file since 2598 was 1765, checked in by Bruno Cornec, 17 years ago |
Update to busybox 1.7.2
|
-
Property svn:eol-style
set to
native
|
File size:
1.6 KB
|
Line | |
---|
1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * fgetversion.c - Get a file version on an ext2 file system
|
---|
4 | * fsetversion.c - Set a file version on an ext2 file system
|
---|
5 | *
|
---|
6 | *
|
---|
7 | * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
|
---|
8 | * Laboratoire MASI, Institut Blaise Pascal
|
---|
9 | * Universite Pierre et Marie Curie (Paris VI)
|
---|
10 | *
|
---|
11 | * This file can be redistributed under the terms of the GNU Library General
|
---|
12 | * Public License
|
---|
13 | */
|
---|
14 |
|
---|
15 | /*
|
---|
16 | * History:
|
---|
17 | * 93/10/30 - Creation
|
---|
18 | */
|
---|
19 |
|
---|
20 | #ifdef HAVE_ERRNO_H
|
---|
21 | #include <errno.h>
|
---|
22 | #endif
|
---|
23 | #ifdef HAVE_UNISTD_H
|
---|
24 | #include <unistd.h>
|
---|
25 | #endif
|
---|
26 | #include <fcntl.h>
|
---|
27 | #include <sys/ioctl.h>
|
---|
28 |
|
---|
29 | #include "e2p.h"
|
---|
30 |
|
---|
31 | #ifdef O_LARGEFILE
|
---|
32 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
|
---|
33 | #else
|
---|
34 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
|
---|
35 | #endif
|
---|
36 |
|
---|
37 | /*
|
---|
38 | To do fsetversion: unsigned long *ptr_version must be set to NULL.
|
---|
39 | and unsigned long version must be set to a value
|
---|
40 | To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
|
---|
41 | and unsigned long version is ignored.
|
---|
42 | TITO.
|
---|
43 | */
|
---|
44 |
|
---|
45 | int fgetsetversion (const char * name, unsigned long * get_version, unsigned long set_version)
|
---|
46 | {
|
---|
47 | #ifdef HAVE_EXT2_IOCTLS
|
---|
48 | int fd, r, ver, save_errno = 0;
|
---|
49 |
|
---|
50 | fd = open (name, OPEN_FLAGS);
|
---|
51 | if (fd == -1)
|
---|
52 | return -1;
|
---|
53 | if (!get_version) {
|
---|
54 | ver = (int) set_version;
|
---|
55 | r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
|
---|
56 | } else {
|
---|
57 | r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
|
---|
58 | *get_version = ver;
|
---|
59 | }
|
---|
60 | if (r == -1)
|
---|
61 | save_errno = errno;
|
---|
62 | close (fd);
|
---|
63 | if (save_errno)
|
---|
64 | errno = save_errno;
|
---|
65 | return r;
|
---|
66 | #else /* ! HAVE_EXT2_IOCTLS */
|
---|
67 | errno = EOPNOTSUPP;
|
---|
68 | return -1;
|
---|
69 | #endif /* ! HAVE_EXT2_IOCTLS */
|
---|
70 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.