hush/util-linux/swaponoff.c
Denis Vlasenko 1d42665b6b *: shrink: use Vladimir's "o+" specifier instead of xatou(opt_param)
function                                             old     new   delta
getopt32                                            1370    1385     +15
sulogin_main                                         490     494      +4
realpath_main                                         84      86      +2
sleep_main                                            76      77      +1
mt_main                                              256     257      +1
printenv_main                                         75      74      -1
fdformat_main                                        546     545      -1
usleep_main                                           44      42      -2
setlogcons_main                                       77      75      -2
ed_main                                             2654    2649      -5
deallocvt_main                                        69      64      -5
addgroup_main                                        373     368      -5
mkfs_minix_main                                     2989    2982      -7
tail_main                                           1221    1213      -8
sv_main                                             1254    1241     -13
du_main                                              348     328     -20
tftp_main                                            325     302     -23
split_main                                           581     558     -23
nc_main                                             1000     977     -23
diff_main                                            891     868     -23
arping_main                                         1797    1770     -27
ls_main                                              893     847     -46
od_main                                             2797    2750     -47
readprofile_main                                    1944    1895     -49
tcpudpsvd_main                                      1973    1922     -51
udhcpc_main                                         2590    2513     -77
grep_main                                            824     722    -102
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/22 up/down: 23/-560)         Total: -537 bytes
   text    data     bss     dec     hex filename
 796973     658    7428  805059   c48c3 busybox_old
 796479     662    7420  804561   c46d1 busybox_unstripped
2008-03-17 09:09:09 +00:00

78 lines
1.4 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini swapon/swapoff implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under the GPL version 2, see the file LICENSE in this tarball.
*/
#include "libbb.h"
#include <mntent.h>
#include <sys/swap.h>
static int swap_enable_disable(char *device)
{
int status;
struct stat st;
xstat(device, &st);
#if ENABLE_DESKTOP
/* test for holes */
if (S_ISREG(st.st_mode))
if (st.st_blocks * (off_t)512 < st.st_size)
bb_error_msg("warning: swap file has holes");
#endif
if (applet_name[5] == 'n')
status = swapon(device, 0);
else
status = swapoff(device);
if (status != 0) {
bb_simple_perror_msg(device);
return 1;
}
return 0;
}
static int do_em_all(void)
{
struct mntent *m;
FILE *f;
int err;
f = setmntent("/etc/fstab", "r");
if (f == NULL)
bb_perror_msg_and_die("/etc/fstab");
err = 0;
while ((m = getmntent(f)) != NULL)
if (strcmp(m->mnt_type, MNTTYPE_SWAP) == 0)
err += swap_enable_disable(m->mnt_fsname);
endmntent(f);
return err;
}
int swap_on_off_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int swap_on_off_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int ret;
if (!argv[1])
bb_show_usage();
ret = getopt32(argv, "a");
if (ret)
return do_em_all();
/* ret = 0; redundant */
while (*++argv)
ret += swap_enable_disable(*argv);
return ret;
}