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#define _GNU_SOURCE
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include "../../memcheck.h"
int main(int argc, char **argv)
{
int fd_in, fd_out;
struct stat stat;
loff_t len, ret;
fd_in = open("copy_file_range_source", O_CREAT | O_RDWR, 0644);
if (fd_in == -1) {
perror("open copy_file_range_source");
exit(EXIT_FAILURE);
}
if (write(fd_in, "foo bar\n", 8) != 8) {
perror("writing to the copy_file_range_source");
exit(EXIT_FAILURE);
}
lseek(fd_in, 0, SEEK_SET);
if (fstat(fd_in, &stat) == -1) {
perror("fstat");
exit(EXIT_FAILURE);
}
len = stat.st_size;
fd_out = open("copy_file_range_dest", O_CREAT | O_WRONLY | O_TRUNC, 0644);
if (fd_out == -1) {
perror("open copy_file_range_dest");
exit(EXIT_FAILURE);
}
/* Check copy_file_range called with the correct arguments works. */
do {
ret = copy_file_range(fd_in, NULL, fd_out, NULL, len, 0);
if (ret == -1) {
perror("copy_file_range");
exit(EXIT_FAILURE);
}
len -= ret;
} while (len > 0);
/* Check valgrind will produce expected warnings for the
various wrong arguments. */
do {
void *t = 0; VALGRIND_MAKE_MEM_UNDEFINED (&t, sizeof (void *));
void *z = (void *) -1;
ret = copy_file_range(fd_in, t, fd_out, NULL, len, 0);
ret = copy_file_range(fd_in, NULL, fd_out, z, len, 0);
ret = copy_file_range(- 1, NULL, - 1, NULL, len, 0);
} while (0);
close(fd_in);
close(fd_out);
unlink("copy_file_range_source");
unlink("copy_file_range_dest");
exit(EXIT_SUCCESS);
}
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