/*
* Copyright (c) 2007 SWSoft. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Started by Andrew Vagin <avagin@sw.ru>
*
* DESCRIPTION
* Check that inotify work for a directory
*
* ALGORITHM
* Execute sequence file's operation and check return events
*/
#include "config.h"
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/syscall.h>
#include <limits.h>
#include "test.h"
#include "safe_macros.h"
#include "lapi/syscalls.h"
#include "inotify.h"
#if defined(HAVE_SYS_INOTIFY_H)
#include <sys/inotify.h>
#ifndef IN_MOVE_SELF
#define IN_MOVE_SELF 0x00000800
#endif
#define EVENT_MAX 1024
/* size of the event structure, not counting name */
#define EVENT_SIZE (sizeof (struct inotify_event))
/* reasonable guess as to size of 1024 events */
#define EVENT_BUF_LEN (EVENT_MAX * (EVENT_SIZE + 16))
static void setup(void);
static void cleanup(void);
char *TCID = "inotify02";
int TST_TOTAL = 9;
#define BUF_SIZE 256
static char fname1[BUF_SIZE], fname2[BUF_SIZE], fname3[BUF_SIZE];
static int fd, fd_notify, reap_wd;
static int wd;
struct event_t {
char name[BUF_SIZE];
unsigned int mask;
};
#define FILE_NAME1 "test_file1"
#define FILE_NAME2 "test_file2"
static struct event_t event_set[EVENT_MAX];
static char event_buf[EVENT_BUF_LEN];
int main(int ac, char **av)
{
int lc;
unsigned int stored_cookie = UINT_MAX;
tst_parse_opts(ac, av, NULL, NULL);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
/*
* generate sequence of events
*/
SAFE_CHMOD(cleanup, ".", 0755);
event_set[tst_count].mask = IN_ISDIR | IN_ATTRIB;
strcpy(event_set[tst_count].name, "");
tst_count++;
if ((fd = creat(FILE_NAME1, 0755)) == -1) {
tst_brkm(TBROK | TERRNO, cleanup,
"creat(\"%s\", 755) failed", FILE_NAME1);
}
event_set[tst_count].mask = IN_CREATE;
strcpy(event_set[tst_count].name, FILE_NAME1);
tst_count++;
event_set[tst_count].mask = IN_OPEN;
strcpy(event_set[tst_count].name, FILE_NAME1);
tst_count++;
SAFE_CLOSE(cleanup, fd);
event_set[tst_count].mask = IN_CLOSE_WRITE;
strcpy(event_set[tst_count].name, FILE_NAME1);
tst_count++;
SAFE_RENAME(cleanup, FILE_NAME1, FILE_NAME2);
event_set[tst_count].mask = IN_MOVED_FROM;
strcpy(event_set[tst_count].name, FILE_NAME1);
tst_count++;
event_set[tst_count].mask = IN_MOVED_TO;
strcpy(event_set[tst_count].name, FILE_NAME2);
tst_count++;
if (getcwd(fname1, BUF_SIZE) == NULL) {
tst_brkm(TBROK | TERRNO, cleanup,
"getcwd(%p, %d) failed", fname1, BUF_SIZE);
}
snprintf(fname2, BUF_SIZE, "%s.rename1", fname1);
SAFE_RENAME(cleanup, fname1, fname2);
event_set[tst_count].mask = IN_MOVE_SELF;
strcpy(event_set[tst_count].name, "");
tst_count++;
SAFE_UNLINK(cleanup, FILE_NAME2);
event_set[tst_count].mask = IN_DELETE;
strcpy(event_set[tst_count].name, FILE_NAME2);
tst_count++;
/*
* test that duplicate events will be coalesced into
* a single event. This test case should be last, that
* we can correct determine kernel bug which exist before
* 2.6.25. See comment below.
*/
snprintf(fname3, BUF_SIZE, "%s.rename2", fname1);
SAFE_RENAME(cleanup, fname2, fname3);
SAFE_RENAME(cleanup, fname3, fname1);
event_set[tst_count].mask = IN_MOVE_SELF;
strcpy(event_set[tst_count].name, "");
tst_count++;
if (tst_count != TST_TOTAL) {
tst_brkm(TBROK, cleanup,
"tst_count and TST_TOTAL are not equal");
}
tst_count = 0;
int len, i = 0, test_num = 0;
if ((len = read(fd_notify, event_buf, EVENT_BUF_LEN)) == -1) {
tst_brkm(TBROK | TERRNO, cleanup,
"read(%d, buf, %zu) failed",
fd_notify, EVENT_BUF_LEN);
}
while (i < len) {
struct inotify_event *event;
event = (struct inotify_event *)&event_buf[i];
if (test_num >= TST_TOTAL) {
if (tst_kvercmp(2, 6, 25) < 0
&& event_set[TST_TOTAL - 1].mask ==
event->mask)
tst_resm(TWARN,
"This may be kernel bug. "
"Before kernel 2.6.25, a kernel bug "
"meant that the kernel code that was "
"intended to coalesce successive identical "
"events (i.e., the two most recent "
"events could potentially be coalesced "
"if the older had not yet been read) "
"instead checked if the most recent event "
"could be coalesced with the oldest "
"unread event. This has been fixed by commit"
"1c17d18e3775485bf1e0ce79575eb637a94494a2.");
tst_resm(TFAIL,
"get unnecessary event: "
"wd=%d mask=%x cookie=%u len=%u"
"name=\"%.*s\"", event->wd, event->mask,
event->cookie, event->len, event->len,
event->name);
} else if ((event_set[test_num].mask == event->mask)
&&
(!strncmp
(event_set[test_num].name, event->name,
event->len))) {
int fail = 0;
if (event->mask == IN_MOVED_FROM) {
if (event->cookie == 0)
fail = 1;
else
stored_cookie = event->cookie;
} else if (event->mask == IN_MOVED_TO) {
if (event->cookie != stored_cookie)
fail = 1;
else
stored_cookie = UINT_MAX;
} else {
if (event->cookie != 0)
fail = 1;
}
if (!fail) {
tst_resm(TPASS,
"get event: wd=%d mask=%x "
"cookie=%u len=%u name=\"%.*s\"",
event->wd, event->mask,
event->cookie, event->len,
event->len, event->name);
} else {
tst_resm(TFAIL,
"get event: wd=%d mask=%x "
"cookie=%u (wrong) len=%u "
"name=\"%s\"",
event->wd, event->mask,
event->cookie, event->len,
event->name);
}
} else {
tst_resm(TFAIL, "get event: wd=%d mask=%x "
"(expected %x) cookie=%u len=%u "
"name=\"%s\" (expected \"%s\") %d",
event->wd, event->mask,
event_set[test_num].mask,
event->cookie, event->len, event->name,
event_set[test_num].name,
strcmp(event_set[test_num].name,
event->name));
}
test_num++;
i += EVENT_SIZE + event->len;
}
for (; test_num < TST_TOTAL; test_num++) {
tst_resm(TFAIL, "didn't get event: mask=%x ",
event_set[test_num].mask);
}
}
cleanup();
tst_exit();
}
static void setup(void)
{
tst_sig(NOFORK, DEF_HANDLER, cleanup);
TEST_PAUSE;
tst_tmpdir();
if ((fd_notify = myinotify_init()) < 0) {
if (errno == ENOSYS) {
tst_brkm(TCONF, cleanup,
"inotify is not configured in this kernel.");
} else {
tst_brkm(TBROK | TERRNO, cleanup,
"inotify_init () failed");
}
}
if ((wd = myinotify_add_watch(fd_notify, ".", IN_ALL_EVENTS)) < 0) {
tst_brkm(TBROK | TERRNO, cleanup,
"inotify_add_watch (%d, \".\", IN_ALL_EVENTS) failed",
fd_notify);
reap_wd = 1;
};
}
static void cleanup(void)
{
if (reap_wd && myinotify_rm_watch(fd_notify, wd) < 0) {
tst_resm(TWARN,
"inotify_rm_watch (%d, %d) failed,", fd_notify, wd);
}
if (fd_notify > 0 && close(fd_notify))
tst_resm(TWARN, "close(%d) failed", fd_notify);
tst_rmdir();
}
#else
char *TCID = "inotify02";
int TST_TOTAL = 0;
int main(void)
{
tst_brkm(TCONF, NULL, "system doesn't have required inotify support");
}
#endif