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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2020 Robert Mustacchi
*/
/*
* Tests to verify fileno(3C) behavior. This test explicitly leaks fds and FILE
* structures to make it easier to verify the subsequent fd behavior works and
* is apparent through the FILE *.
*/
#include <stdio.h>
#include <unistd.h>
#include <err.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <wchar.h>
#define FNO_DUPFD 150
static uint_t fno_nfails;
static uint_t fno_ntests;
static int fno_nextfd;
const char *
_umem_debug_init(void)
{
return ("default,verbose");
}
const char *
_umem_logging_init(void)
{
return ("fail,contents");
}
static void
check_file(FILE *fp, int fd, const char *msg)
{
int act = fileno(fp);
if (act != fd) {
(void) printf("TEST FAILED: %s: expected fd %d, found %d\n",
msg, fd, act);
fno_nfails++;
} else {
(void) printf("TEST PASSED: %s\n", msg);
}
fno_ntests++;
}
static void
check_open_n(int n)
{
int fdbase;
uint_t i;
for (i = 0, fdbase = fno_nextfd; i < n; i++, fdbase++) {
FILE *f = fopen("/dev/null", "w+");
if (f == NULL) {
err(EXIT_FAILURE, "failed to open /dev/null");
}
check_file(f, fdbase, "Consecutive FDs");
}
}
static void
check_memstream(void)
{
FILE *fmem, *omem, *wmem;
char *buf;
wchar_t *wbuf;
size_t size;
fmem = fmemopen(NULL, 10, "w+");
if (fmem == NULL) {
err(EXIT_FAILURE, "failed to fmemopen()");
}
omem = open_memstream(&buf, &size);
if (omem == NULL) {
err(EXIT_FAILURE, "failed to open_memstream()");
}
wmem = open_wmemstream(&wbuf, &size);
if (wmem == NULL) {
err(EXIT_FAILURE, "failed to open_wmemstream()");
}
check_file(fmem, -1, "basic fmemopen()");
check_file(omem, -1, "basic open_memstream()");
check_file(wmem, -1, "basic open_wmemstream()");
}
static void
check_fdopen(void)
{
int fd, dupfd;
FILE *f;
fd = open("/dev/null", O_RDWR);
if (fd < 0) {
err(EXIT_FAILURE, "failed to open /dev/null");
}
fno_nextfd = fd + 1;
f = fdopen(fd, "r+");
if (f == NULL) {
err(EXIT_FAILURE, "failed to fdopen /dev/null");
}
check_file(f, fd, "fdopen");
if ((dupfd = dup2(fd, FNO_DUPFD)) != FNO_DUPFD) {
err(EXIT_FAILURE, "failed to dup2 /dev/null");
}
f = fdopen(dupfd, "r+");
if (f == NULL) {
err(EXIT_FAILURE, "failed to fdopen dup2'd /dev/null");
}
check_file(f, dupfd, "fdopen of dup2'd file");
f = freopen("/dev/zero", "r+", f);
if (f == NULL) {
err(EXIT_FAILURE, "failed to freopen dup2'd FILE *");
}
check_file(f, fno_nextfd, "freopen dup2'd FILE *");
fno_nextfd++;
}
static void
check_alternate(void)
{
wchar_t *c;
size_t s, i;
for (i = 0; i < 10; i++) {
FILE *f, *save;
f = fmemopen(NULL, 10, "a+");
if (f == NULL) {
err(EXIT_FAILURE, "failed to create fmemopen stream");
}
check_file(f, -1, "alternating memstream, fopen (fmemopen)");
save = f;
f = fopen("/dev/zero", "r+");
if (f == NULL) {
err(EXIT_FAILURE, "failed to open /dev/zero");
}
check_file(f, fno_nextfd, "alternating memstream, fopen "
"(file)");
fno_nextfd++;
f = open_wmemstream(&c, &s);
if (f == NULL) {
err(EXIT_FAILURE, "failed to create open_wmemstream() "
"stream");
}
check_file(f, -1, "alternating memstream, fopen (wmemstream)");
f = freopen("/dev/null", "r+", save);
if (f == NULL) {
err(EXIT_FAILURE, "failed to freopen /dev/null from "
"fmemopen()");
}
check_file(f, fno_nextfd, "alternating memstream, fopen "
"(reopen)");
f = freopen("/dev/zero", "a+", f);
check_file(f, fno_nextfd, "alternating memstream, fopen "
"(reopen file)");
fno_nextfd++;
}
}
int
main(void)
{
check_file(stdin, STDIN_FILENO, "default stdin fd is correct");
check_file(stdout, STDOUT_FILENO, "default stdout fd is correct");
check_file(stderr, STDERR_FILENO, "default stderr fd is correct");
/*
* Establish our base fd. The test runner can open files on our behalf.
*/
fno_nextfd = open("/dev/null", O_RDONLY);
if (fno_nextfd < 0) {
err(EXIT_FAILURE, "failed to open /dev/null");
}
fno_nextfd++;
check_open_n(10);
fno_nextfd += 10;
check_memstream();
check_fdopen();
check_alternate();
printf("%d/%d tests passed\n", fno_ntests - fno_nfails, fno_ntests);
return (fno_nfails > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
}
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