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#define _GNU_SOURCE
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/uio.h>
#include <string.h>
#include "../../memcheck.h"
#include <errno.h>
int main(int argc, char **argv)
{
char str0[] = "hello ";
char str1[] = "world\n";
struct iovec iov[2];
int fd;
fd = open("prwv2_source", O_CREAT | O_RDWR, 0644);
if (fd == -1) {
perror("prwv2_source");
exit(EXIT_FAILURE);
}
iov[0].iov_base = str0;
iov[0].iov_len = strlen(str0);
iov[1].iov_base = str1;
iov[1].iov_len = strlen(str1);
/* Check pwritev2 and preadv2 called with the correct arguments works. */
if (pwritev2(fd, iov, 2, 0, 0) == -1) {
perror("pwritev2");
exit(EXIT_FAILURE);
}
if (preadv2(fd, iov, 2, 0, 0) == -1) {
perror("preadv2");
printf("errno: %d\n", errno);
exit(EXIT_FAILURE);
}
/* Check valgrind will produce expected warnings for the
various wrong arguments. */
do {
/* always allocate 16 bytes to not to have different .exps for different reg sizes */
char *mem = malloc(16);
void *t = (void *) &mem[0];
void *z = (void *) -1;
int c = *((int *) &mem[4]);
int flag = *((int *) &mem[8]);
pwritev2(fd, NULL, 2, 0, 0);
pwritev2(fd, z, 2, 0, 0);
pwritev2(fd, t, 2, 0, 0);
pwritev2(fd, iov, -1, 0, 0);
pwritev2(fd, iov, c, 0, 0);
pwritev2(fd, iov, 2, -5, 0);
pwritev2(-1, iov, 2, -5, 0);
pwritev2(fd, iov, 2, -5, flag);
preadv2(fd, NULL, 2, 0, 0);
preadv2(fd, z, 2, 0, 0);
preadv2(fd, t, 2, 0, 0);
preadv2(fd, iov, -1, 0, 0);
preadv2(fd, iov, c, 0, 0);
preadv2(fd, iov, 2, -5, 0);
preadv2(-1, iov, 2, -5, 0);
iov[1].iov_base = (void *) -1;
pwritev2(fd, iov, 2, 0, 0);
preadv2(fd, iov, 2, 0, 0);
free(mem);
} while (0);
close(fd);
unlink("prwv2_source");
exit(EXIT_SUCCESS);
}
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