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/* SPDX-License-Identifier: LGPL-2.1+ */
#include <fcntl.h>
#include "util.h"
#define PART1 4096
#define PART2 4096
#define PART3 8192
#define PART4 3000
#define PART5 13
int main(int argc, char *argv[]) {
uint8_t buffer[PART1 + PART2 + PART3 + PART4 + PART5];
uint8_t buffer2[sizeof(buffer)];
char *fn;
int fd, p[2];
uint64_t n_punched;
const char *d;
assert_se(tmp_dir(&d) >= 0);
fn = strjoina(d, "/zeroXXXXXX");
memzero(buffer, PART1);
dev_urandom(buffer + PART1, PART2);
memzero(buffer + PART1 + PART2, PART3);
dev_urandom(buffer + PART1 + PART2 + PART3, PART4);
memzero(buffer + PART1 + PART2 + PART3 + PART4, PART5);
fd = mkostemp(fn, O_CLOEXEC);
assert_se(fd >= 0);
assert_se(unlink(fn) == 0);
assert_se(loop_write_with_holes(fd, buffer, sizeof(buffer), &n_punched) >= 0);
assert_se(n_punched == PART1 + PART3);
assert_se(lseek(fd, 0, SEEK_SET) == 0);
assert_se(loop_read(fd, buffer2, sizeof(buffer2)) == sizeof(buffer2));
assert_se(memcmp(buffer, buffer2, sizeof(buffer)) == 0);
memzero(buffer + PART1 + 1, PART2 - 2);
assert_se(lseek(fd, PART1-1, SEEK_SET) == PART1-1);
assert_se(loop_write_with_holes(fd, buffer + PART1 - 1, PART2 + 2, &n_punched) >= 0);
assert_se(lseek(fd, 0, SEEK_SET) == 0);
assert_se(loop_read(fd, buffer2, sizeof(buffer2)) == sizeof(buffer2));
assert_se(memcmp(buffer, buffer2, sizeof(buffer)) == 0);
fd = safe_close(fd);
assert_se(pipe2(p, O_CLOEXEC) >= 0);
assert_se(loop_write_with_holes(p[1], buffer, MIN(sizeof(buffer), (size_t) PIPE_BUF), &n_punched) >= 0);
assert_se(n_punched == 0);
p[1] = safe_close(p[1]);
assert_se(loop_read(p[0], buffer2, sizeof(buffer2)) == MIN((ssize_t) sizeof(buffer2), PIPE_BUF));
p[0] = safe_close(p[0]);
assert_se(memcmp(buffer, buffer2, MIN(sizeof(buffer), (size_t) PIPE_BUF)) == 0);
return 0;
}
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