diff options
Diffstat (limited to 'e2fsprogs/ext2fs/flushb.c')
-rw-r--r-- | e2fsprogs/ext2fs/flushb.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/e2fsprogs/ext2fs/flushb.c b/e2fsprogs/ext2fs/flushb.c deleted file mode 100644 index e42982653..000000000 --- a/e2fsprogs/ext2fs/flushb.c +++ /dev/null | |||
@@ -1,83 +0,0 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * flushb.c --- Hides system-dependent information for both syncing a | ||
4 | * device to disk and to flush any buffers from disk cache. | ||
5 | * | ||
6 | * Copyright (C) 2000 Theodore Ts'o. | ||
7 | * | ||
8 | * %Begin-Header% | ||
9 | * This file may be redistributed under the terms of the GNU Public | ||
10 | * License. | ||
11 | * %End-Header% | ||
12 | */ | ||
13 | |||
14 | #include <stdio.h> | ||
15 | #if HAVE_ERRNO_H | ||
16 | #include <errno.h> | ||
17 | #endif | ||
18 | #if HAVE_UNISTD_H | ||
19 | #include <unistd.h> | ||
20 | #endif | ||
21 | #if HAVE_SYS_IOCTL_H | ||
22 | #include <sys/ioctl.h> | ||
23 | #endif | ||
24 | #if HAVE_SYS_MOUNT_H | ||
25 | #include <sys/param.h> | ||
26 | #include <sys/mount.h> /* This may define BLKFLSBUF */ | ||
27 | #endif | ||
28 | |||
29 | #include "ext2_fs.h" | ||
30 | #include "ext2fs.h" | ||
31 | |||
32 | /* | ||
33 | * For Linux, define BLKFLSBUF and FDFLUSH if necessary, since | ||
34 | * not all portable header file does so for us. This really should be | ||
35 | * fixed in the glibc header files. (Recent glibcs appear to define | ||
36 | * BLKFLSBUF in sys/mount.h, but FDFLUSH still doesn't seem to be | ||
37 | * defined anywhere portable.) Until then.... | ||
38 | */ | ||
39 | #ifdef __linux__ | ||
40 | #ifndef BLKFLSBUF | ||
41 | #define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */ | ||
42 | #endif | ||
43 | #ifndef FDFLUSH | ||
44 | #define FDFLUSH _IO(2,0x4b) /* flush floppy disk */ | ||
45 | #endif | ||
46 | #endif | ||
47 | |||
48 | /* | ||
49 | * This function will sync a device/file, and optionally attempt to | ||
50 | * flush the buffer cache. The latter is basically only useful for | ||
51 | * system benchmarks and for torturing systems in burn-in tests. :) | ||
52 | */ | ||
53 | errcode_t ext2fs_sync_device(int fd, int flushb) | ||
54 | { | ||
55 | /* | ||
56 | * We always sync the device in case we're running on old | ||
57 | * kernels for which we can lose data if we don't. (There | ||
58 | * still is a race condition for those kernels, but this | ||
59 | * reduces it greatly.) | ||
60 | */ | ||
61 | if (fsync (fd) == -1) | ||
62 | return errno; | ||
63 | |||
64 | if (flushb) { | ||
65 | |||
66 | #ifdef BLKFLSBUF | ||
67 | if (ioctl (fd, BLKFLSBUF, 0) == 0) | ||
68 | return 0; | ||
69 | #else | ||
70 | #ifdef __GNUC__ | ||
71 | # warning BLKFLSBUF not defined | ||
72 | #endif /* __GNUC__ */ | ||
73 | #endif | ||
74 | #ifdef FDFLUSH | ||
75 | ioctl (fd, FDFLUSH, 0); /* In case this is a floppy */ | ||
76 | #else | ||
77 | #ifdef __GNUC__ | ||
78 | # warning FDFLUSH not defined | ||
79 | #endif /* __GNUC__ */ | ||
80 | #endif | ||
81 | } | ||
82 | return 0; | ||
83 | } | ||