libfuse: fuse-3.18.2/example/ioctl_client.c File Reference

libfuse

ioctl_client.c File Reference
`#include <sys/types.h>`
`#include <fcntl.h>`
`#include <sys/stat.h>`
`#include <sys/ioctl.h>`
`#include <stdio.h>`
`#include <stdlib.h>`
`#include <ctype.h>`
`#include <errno.h>`
`#include <unistd.h>`
`#include "ioctl.h"`

Go to the source code of this file.

## Detailed Description

This program tests the ioctl.c example file systsem.

Compile with:

    gcc -Wall ioctl_client.c -o ioctl_client

## Source code

/*
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 GPLv2.
See the file GPL2.txt.
*/
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include "ioctl.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;
int ret = 0;
if (argc < 2) {
fprintf(stderr, "%s", usage);
return 1;
}
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");
ret = 1;
goto out;
}
printf("%zu\n", size);
} else {
size = strtoul(argv[2], NULL, 0);
if (ioctl(fd, FIOC_SET_SIZE, &size)) {
perror("ioctl");
ret = 1;
goto out;
}
}
out:
close(fd);
return ret;
}

Definition in file ioctl_client.c.