diff options
Diffstat (limited to 'e2fsprogs/e2p/fgetversion.c')
-rw-r--r-- | e2fsprogs/e2p/fgetversion.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/e2fsprogs/e2p/fgetversion.c b/e2fsprogs/e2p/fgetversion.c new file mode 100644 index 000000000..351a7d5d0 --- /dev/null +++ b/e2fsprogs/e2p/fgetversion.c | |||
@@ -0,0 +1,62 @@ | |||
1 | /* | ||
2 | * fgetversion.c - Get a file version on an ext2 file system | ||
3 | * | ||
4 | * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> | ||
5 | * Laboratoire MASI, Institut Blaise Pascal | ||
6 | * Universite Pierre et Marie Curie (Paris VI) | ||
7 | * | ||
8 | * This file can be redistributed under the terms of the GNU Library General | ||
9 | * Public License | ||
10 | */ | ||
11 | |||
12 | /* | ||
13 | * History: | ||
14 | * 93/10/30 - Creation | ||
15 | */ | ||
16 | |||
17 | #if HAVE_ERRNO_H | ||
18 | #include <errno.h> | ||
19 | #endif | ||
20 | #if HAVE_UNISTD_H | ||
21 | #include <unistd.h> | ||
22 | #endif | ||
23 | #include <fcntl.h> | ||
24 | #include <sys/ioctl.h> | ||
25 | |||
26 | #include "e2p.h" | ||
27 | |||
28 | #ifdef O_LARGEFILE | ||
29 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) | ||
30 | #else | ||
31 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) | ||
32 | #endif | ||
33 | |||
34 | int fgetversion (const char * name, unsigned long * version) | ||
35 | { | ||
36 | #if HAVE_EXT2_IOCTLS | ||
37 | #if !APPLE_DARWIN | ||
38 | int fd, r, ver, save_errno = 0; | ||
39 | |||
40 | fd = open (name, OPEN_FLAGS); | ||
41 | if (fd == -1) | ||
42 | return -1; | ||
43 | r = ioctl (fd, EXT2_IOC_GETVERSION, &ver); | ||
44 | if (r == -1) | ||
45 | save_errno = errno; | ||
46 | *version = ver; | ||
47 | close (fd); | ||
48 | if (save_errno) | ||
49 | errno = save_errno; | ||
50 | return r; | ||
51 | #else | ||
52 | int ver=-1, err; | ||
53 | err = syscall(SYS_fsctl, name, EXT2_IOC_GETVERSION, &ver, 0); | ||
54 | *version = ver; | ||
55 | return(err); | ||
56 | #endif | ||
57 | #else /* ! HAVE_EXT2_IOCTLS */ | ||
58 | extern int errno; | ||
59 | errno = EOPNOTSUPP; | ||
60 | return -1; | ||
61 | #endif /* ! HAVE_EXT2_IOCTLS */ | ||
62 | } | ||