GopherProxy

	fsfreeze.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
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	---
	fsfreeze.c (899B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <sys/ioctl.h>
	3 #include <sys/stat.h>
	4 #include <sys/types.h>
	5
	6 #include <fcntl.h>
	7 #include <stdio.h>
	8 #include <stdlib.h>
	9 #include <unistd.h>
	10
	11 #include "util.h"
	12
	13 #define FIFREEZE _IOWR('X', 119, int) /* Freeze */
	14 #define FITHAW _IOWR('X', 120, int) /* Thaw */
	15
	16 static void
	17 usage(void)
	18 {
	19 eprintf("usage: %s (-f \| -u) mountpoint\n", argv0);
	20 }
	21
	22 int
	23 main(int argc, char *argv[])
	24 {
	25 int fflag = 0;
	26 int uflag = 0;
	27 long p = 1;
	28 int fd;
	29
	30 ARGBEGIN {
	31 case 'f':
	32 fflag = 1;
	33 break;
	34 case 'u':
	35 uflag = 1;
	36 break;
	37 default:
	38 usage();
	39 } ARGEND;
	40
	41 if (argc != 1)
	42 usage();
	43
	44 if ((fflag ^ uflag) == 0)
	45 usage();
	46
	47 fd = open(argv[0], O_RDONLY);
	48 if (fd < 0)
	49 eprintf("open: %s:", argv[0]);
	50 if (ioctl(fd, fflag == 1 ? FIFREEZE : FITHAW, &p) < 0)
	51 eprintf("%s %s:", fflag == 1 ? "FIFREEZE" : "FITHAW", ar…
	52 close(fd);
	53 return 0;
	54 }