Contents of /tags/mkinitrd-6_1_8/busybox/util-linux/freeramdisk.c
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Wed Oct 28 00:17:50 2009 UTC (14 years, 11 months ago) by niro
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Wed Oct 28 00:17:50 2009 UTC (14 years, 11 months ago) by niro
File MIME type: text/plain
File size: 895 byte(s)
tagged 'mkinitrd-6_1_8'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * freeramdisk and fdflush implementations for busybox |
4 | * |
5 | * Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it> |
6 | * Adjusted a bit by Erik Andersen <andersen@codepoet.org> |
7 | * Unified with fdflush by Tito Ragusa <farmatito@tiscali.it> |
8 | * |
9 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
10 | */ |
11 | |
12 | #include "libbb.h" |
13 | |
14 | /* From <linux/fd.h> */ |
15 | #define FDFLUSH _IO(2,0x4b) |
16 | |
17 | int freeramdisk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
18 | int freeramdisk_main(int argc, char **argv) |
19 | { |
20 | int fd; |
21 | |
22 | if (argc != 2) bb_show_usage(); |
23 | |
24 | fd = xopen(argv[1], O_RDWR); |
25 | |
26 | // Act like freeramdisk, fdflush, or both depending on configuration. |
27 | ioctl_or_perror_and_die(fd, (ENABLE_FREERAMDISK && applet_name[1]=='r') |
28 | || !ENABLE_FDFLUSH ? BLKFLSBUF : FDFLUSH, NULL, "%s", argv[1]); |
29 | |
30 | if (ENABLE_FEATURE_CLEAN_UP) close(fd); |
31 | |
32 | return EXIT_SUCCESS; |
33 | } |