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/* COVERAGE: ioctl */
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <linux/if_tun.h>
#include <linux/fs.h>
unsigned int fd, val;
char fname[] = "/dev/net/tun";
int main() {
fd = open(fname, O_RDWR);
if (fd < 0) {
printf("ERROR (open %s)\n", fname);
}
// ----- try successful call -----
ioctl(fd, TUNGETFEATURES, &val);
//staptest/ ioctl (NNNN, NNNN, XXXX) = NNNN
// ----- try ugly things -----
ioctl(-1, TUNGETFEATURES, &val);
//staptest// ioctl (-1, NNNN, XXXX) = NNNN
ioctl(fd, -1, &val);
//staptest// ioctl (NNNN, -1, XXXX) = NNNN
ioctl(fd, TUNGETFEATURES, -1);
#ifdef __s390__
//staptest// ioctl (NNNN, NNNN, 0x[7]?[f]+) = NNNN
#else
//staptest// ioctl (NNNN, NNNN, 0x[f]+) = NNNN
#endif
close(fd);
return 0;
}
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