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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 Joyent, Inc.
*/
/*
* Test the open(2) syscall.
*
* Currently only tests O_DIRECT pass/fail based on the known support in the
* underlying file system.
*
* Note: there is a test for the O_DIRECTORY flag in the directory above this
* which could be consolidated into this code at some point.
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/param.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
static void
o_direct_test(const char *dir)
{
int fd;
struct statvfs64 buf;
char tmpname[MAXPATHLEN];
char *path;
boolean_t pass;
(void) snprintf(tmpname, sizeof (tmpname), "%s/otstXXXXXX", dir);
if ((path = mktemp(tmpname)) == NULL) {
(void) printf("FAILED: unable to create temp file name\n");
exit(1);
}
if (statvfs64(dir, &buf) == -1) {
perror("statvfs failed");
exit(1);
}
if (strcmp(buf.f_basetype, "zfs") == 0) {
pass = B_TRUE;
} else if (strcmp(buf.f_basetype, "tmpfs") == 0) {
pass = B_FALSE;
} else {
(void) printf("SKIP: expected 'zfs' or 'tmpfs'\n");
return;
}
fd = open(path, O_WRONLY | O_CREAT | O_EXCL | O_DIRECT, 0644);
if (fd >= 0) {
(void) close(fd);
(void) unlink(path);
if (!pass) {
(void) printf("FAILED: O_DIRECT on %s/tst_open is "
"expected to fail\n", dir);
exit(1);
}
} else {
if (pass) {
(void) printf("FAILED: O_DIRECT on %s/tst_open is "
"expected to succeed\n", dir);
exit(1);
}
if (errno != EINVAL) {
(void) printf("FAILED: expected EINVAL, got %d\n",
errno);
exit(1);
}
}
}
int
main(void)
{
/* On typical illumos distros, /tmp is tmpfs, O_DIRECT should fail */
o_direct_test("/tmp");
/* On typical illumos distros, /var is zfs, O_DIRECT should pass */
o_direct_test("/var/tmp");
(void) printf("PASS\n");
return (0);
}
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