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/*
FUSE fioclient: FUSE ioctl example client
Copyright (C) 2008 SUSE Linux Products GmbH
Copyright (C) 2008 Tejun Heo <teheo@suse.de>
This program can be distributed under the terms of the GNU GPL.
See the file COPYING.
gcc -Wall fioclient.c -o fioclient
*/
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include "fioc.h"
const char *usage =
"Usage: fioclient FIOC_FILE [SIZE]\n"
"\n"
" get size if SIZE is omitted, set size otherwise\n"
"\n";
int main(int argc, char **argv)
{
size_t size;
int fd;
if (argc < 2) {
goto usage;
}
fd = open(argv[1], O_RDWR);
if (fd < 0) {
perror("open");
return 1;
}
if (argc == 2) {
if (ioctl(fd, FIOC_GET_SIZE, &size)) {
perror("ioctl");
return 1;
}
printf("%zu\n", size);
} else {
char *endp;
size = strtoul(argv[2], &endp, 0);
if (endp == argv[2] || *endp != '\0')
goto usage;
if (ioctl(fd, FIOC_SET_SIZE, &size)) {
perror("ioctl");
return 1;
}
}
return 0;
usage:
fprintf(stderr, usage);
return 1;
}
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