testcases/kernel/syscalls/fanotify/fanotify02.c - platform/external/ltp - Gitiles

 /*
  * Copyright (c) 2013 SUSE.  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 Jan Kara <jack@suse.cz>
  *
  * DESCRIPTION
  *     Check that fanotify work for children of a directory
  */
 #include "config.h"

 #include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/fcntl.h>
 #include <errno.h>
 #include <string.h>
 #include <sys/syscall.h>
 #include "test.h"
 #include "linux_syscall_numbers.h"
 #include "fanotify.h"
 #include "safe_macros.h"

 char *TCID = "fanotify02";
 int TST_TOTAL = 8;

 #if defined(HAVE_SYS_FANOTIFY_H)
 #include <sys/fanotify.h>

 #define EVENT_MAX 1024
 /* size of the event structure, not counting name */
 #define EVENT_SIZE  (sizeof (struct fanotify_event_metadata))
 /* reasonable guess as to size of 1024 events */
 #define EVENT_BUF_LEN        (EVENT_MAX * EVENT_SIZE)

 static void setup(void);
 static void cleanup(void);

 #define BUF_SIZE 256
 static char fname[BUF_SIZE];
 static char buf[BUF_SIZE];
 static int fd, fd_notify;

 static unsigned long long event_set[EVENT_MAX];

 static char event_buf[EVENT_BUF_LEN];

 int main(int ac, char **av)
 {
 	int lc;
 	const char *msg;

 	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
 		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);

 	setup();

 	for (lc = 0; TEST_LOOPING(lc); lc++) {
 		int ret, len, i = 0, test_num = 0;

 		tst_count = 0;

 		if (fanotify_mark(fd_notify, FAN_MARK_ADD, FAN_ACCESS |
 				    FAN_MODIFY | FAN_CLOSE | FAN_OPEN |
 				    FAN_EVENT_ON_CHILD, AT_FDCWD, ".") < 0) {
 			tst_brkm(TBROK | TERRNO, cleanup,
 			    "fanotify_mark (%d, FAN_MARK_ADD, FAN_ACCESS | "
 			    "FAN_MODIFY | FAN_CLOSE | FAN_OPEN | "
 			    "FAN_EVENT_ON_CHILD, AT_FDCWD, '.') failed",
 			    fd_notify);
 		}

 		/*
 		 * generate sequence of events
 		 */
 		fd = SAFE_OPEN(cleanup, fname, O_RDWR | O_CREAT, 0700);
 		event_set[tst_count] = FAN_OPEN;
 		tst_count++;

 		SAFE_WRITE(cleanup, 1, fd, fname, strlen(fname));
 		event_set[tst_count] = FAN_MODIFY;
 		tst_count++;

 		SAFE_CLOSE(cleanup, fd);
 		event_set[tst_count] = FAN_CLOSE_WRITE;
 		tst_count++;

 		/*
 		 * Get list of events so far. We get events here to avoid
 		 * merging of following events with the previous ones.
 		 */
 		ret = SAFE_READ(cleanup, 0, fd_notify, event_buf,
 				EVENT_BUF_LEN);
 		len = ret;

 		fd = SAFE_OPEN(cleanup, fname, O_RDONLY);
 		event_set[tst_count] = FAN_OPEN;
 		tst_count++;

 		SAFE_READ(cleanup, 0, fd, buf, BUF_SIZE);
 		event_set[tst_count] = FAN_ACCESS;
 		tst_count++;

 		SAFE_CLOSE(cleanup, fd);
 		event_set[tst_count] = FAN_CLOSE_NOWRITE;
 		tst_count++;

 		/*
 		 * get next events
 		 */
 		ret = SAFE_READ(cleanup, 0, fd_notify, event_buf + len,
 				EVENT_BUF_LEN - len);
 		len += ret;

 		/*
 		 * now remove child mark
 		 */
 		if (fanotify_mark(fd_notify, FAN_MARK_REMOVE,
 				    FAN_EVENT_ON_CHILD, AT_FDCWD, ".") < 0) {
 			tst_brkm(TBROK | TERRNO, cleanup,
 			    "fanotify_mark (%d, FAN_MARK REMOVE, "
 			    "FAN_EVENT_ON_CHILD, AT_FDCWD, '.') failed",
 			    fd_notify);
 		}

 		/*
 		 * Do something to verify events didn't get generated
 		 */
 		fd = SAFE_OPEN(cleanup, fname, O_RDONLY);

 		SAFE_CLOSE(cleanup, fd);

 		fd = SAFE_OPEN(cleanup, ".", O_RDONLY | O_DIRECTORY);
 		event_set[tst_count] = FAN_OPEN;
 		tst_count++;

 		SAFE_CLOSE(cleanup, fd);
 		event_set[tst_count] = FAN_CLOSE_NOWRITE;
 		tst_count++;

 		/*
 		 * Check events got generated only for the directory
 		 */
 		ret = SAFE_READ(cleanup, 0, fd_notify, event_buf + len,
 				EVENT_BUF_LEN - len);
 		len += ret;

 		if (TST_TOTAL != tst_count) {
 			tst_brkm(TBROK, cleanup,
 				 "TST_TOTAL and tst_count are not equal");
 		}
 		tst_count = 0;

 		/*
 		 * check events
 		 */
 		while (i < len) {
 			struct fanotify_event_metadata *event;

 			event = (struct fanotify_event_metadata *)&event_buf[i];
 			if (test_num >= TST_TOTAL) {
 				tst_resm(TFAIL,
 					 "get unnecessary event: mask=%llx "
 					 "pid=%u fd=%u",
 					 (unsigned long long)event->mask,
 					 (unsigned)event->pid, event->fd);
 			} else if (!(event->mask & event_set[test_num])) {
 				tst_resm(TFAIL,
 					 "get event: mask=%llx (expected %llx) "
 					 "pid=%u fd=%u",
 					 (unsigned long long)event->mask,
 					 event_set[test_num],
 					 (unsigned)event->pid, event->fd);
 			} else if (event->pid != getpid()) {
 				tst_resm(TFAIL,
 					 "get event: mask=%llx pid=%u "
 					 "(expected %u) fd=%u",
 					 (unsigned long long)event->mask,
 					 (unsigned)event->pid,
 					 (unsigned)getpid(),
 					 event->fd);
 			} else {
 				tst_resm(TPASS,
 					    "get event: mask=%llx pid=%u fd=%u",
 					    (unsigned long long)event->mask,
 					    (unsigned)event->pid, event->fd);
 			}
 			event->mask &= ~event_set[test_num];
 			/* No events left in current mask? Go for next event */
 			if (event->mask == 0) {
 				i += event->event_len;
 				close(event->fd);
 			}
 			test_num++;
 		}
 		for (; test_num < TST_TOTAL; test_num++) {
 			tst_resm(TFAIL, "didn't get event: mask=%llx",
 				 event_set[test_num]);

 		}
 	}

 	cleanup();
 	tst_exit();
 }

 static void setup(void)
 {
 	tst_sig(NOFORK, DEF_HANDLER, cleanup);

 	TEST_PAUSE;

 	tst_tmpdir();
 	sprintf(fname, "fname_%d", getpid());

 	if ((fd_notify = fanotify_init(FAN_CLASS_NOTIF, O_RDONLY)) < 0) {
 		if (errno == ENOSYS) {
 			tst_brkm(TCONF, cleanup,
 				 "fanotify is not configured in this kernel.");
 		} else {
 			tst_brkm(TBROK | TERRNO, cleanup,
 				 "fanotify_init failed");
 		}
 	}
 }

 static void cleanup(void)
 {
 	if (close(fd_notify) == -1)
 		tst_resm(TWARN, "close(%d) failed", fd_notify);

 	tst_rmdir();
 }

 #else

 int main(void)
 {
 	tst_brkm(TCONF, NULL, "system doesn't have required fanotify support");
 }

 #endif
	/*
	* Copyright (c) 2013 SUSE. 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 Jan Kara <jack@suse.cz>
	*
	* DESCRIPTION
	* Check that fanotify work for children of a directory
	*/
	#include "config.h"

	#include <stdio.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <sys/fcntl.h>
	#include <errno.h>
	#include <string.h>
	#include <sys/syscall.h>
	#include "test.h"
	#include "linux_syscall_numbers.h"
	#include "fanotify.h"
	#include "safe_macros.h"

	char *TCID = "fanotify02";
	int TST_TOTAL = 8;

	#if defined(HAVE_SYS_FANOTIFY_H)
	#include <sys/fanotify.h>

	#define EVENT_MAX 1024
	/* size of the event structure, not counting name */
	#define EVENT_SIZE (sizeof (struct fanotify_event_metadata))
	/* reasonable guess as to size of 1024 events */
	#define EVENT_BUF_LEN (EVENT_MAX * EVENT_SIZE)

	static void setup(void);
	static void cleanup(void);

	#define BUF_SIZE 256
	static char fname[BUF_SIZE];
	static char buf[BUF_SIZE];
	static int fd, fd_notify;

	static unsigned long long event_set[EVENT_MAX];

	static char event_buf[EVENT_BUF_LEN];

	int main(int ac, char **av)
	{
	int lc;
	const char *msg;

	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
	tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);

	setup();

	for (lc = 0; TEST_LOOPING(lc); lc++) {
	int ret, len, i = 0, test_num = 0;

	tst_count = 0;

	if (fanotify_mark(fd_notify, FAN_MARK_ADD, FAN_ACCESS \|
	FAN_MODIFY \| FAN_CLOSE \| FAN_OPEN \|
	FAN_EVENT_ON_CHILD, AT_FDCWD, ".") < 0) {
	tst_brkm(TBROK \| TERRNO, cleanup,
	"fanotify_mark (%d, FAN_MARK_ADD, FAN_ACCESS \| "
	"FAN_MODIFY \| FAN_CLOSE \| FAN_OPEN \| "
	"FAN_EVENT_ON_CHILD, AT_FDCWD, '.') failed",
	fd_notify);
	}

	/*
	* generate sequence of events
	*/
	fd = SAFE_OPEN(cleanup, fname, O_RDWR \| O_CREAT, 0700);
	event_set[tst_count] = FAN_OPEN;
	tst_count++;

	SAFE_WRITE(cleanup, 1, fd, fname, strlen(fname));
	event_set[tst_count] = FAN_MODIFY;
	tst_count++;

	SAFE_CLOSE(cleanup, fd);
	event_set[tst_count] = FAN_CLOSE_WRITE;
	tst_count++;

	/*
	* Get list of events so far. We get events here to avoid
	* merging of following events with the previous ones.
	*/
	ret = SAFE_READ(cleanup, 0, fd_notify, event_buf,
	EVENT_BUF_LEN);
	len = ret;

	fd = SAFE_OPEN(cleanup, fname, O_RDONLY);
	event_set[tst_count] = FAN_OPEN;
	tst_count++;

	SAFE_READ(cleanup, 0, fd, buf, BUF_SIZE);
	event_set[tst_count] = FAN_ACCESS;
	tst_count++;

	SAFE_CLOSE(cleanup, fd);
	event_set[tst_count] = FAN_CLOSE_NOWRITE;
	tst_count++;

	/*
	* get next events
	*/
	ret = SAFE_READ(cleanup, 0, fd_notify, event_buf + len,
	EVENT_BUF_LEN - len);
	len += ret;

	/*
	* now remove child mark
	*/
	if (fanotify_mark(fd_notify, FAN_MARK_REMOVE,
	FAN_EVENT_ON_CHILD, AT_FDCWD, ".") < 0) {
	tst_brkm(TBROK \| TERRNO, cleanup,
	"fanotify_mark (%d, FAN_MARK REMOVE, "
	"FAN_EVENT_ON_CHILD, AT_FDCWD, '.') failed",
	fd_notify);
	}

	/*
	* Do something to verify events didn't get generated
	*/
	fd = SAFE_OPEN(cleanup, fname, O_RDONLY);

	SAFE_CLOSE(cleanup, fd);

	fd = SAFE_OPEN(cleanup, ".", O_RDONLY \| O_DIRECTORY);
	event_set[tst_count] = FAN_OPEN;
	tst_count++;

	SAFE_CLOSE(cleanup, fd);
	event_set[tst_count] = FAN_CLOSE_NOWRITE;
	tst_count++;

	/*
	* Check events got generated only for the directory
	*/
	ret = SAFE_READ(cleanup, 0, fd_notify, event_buf + len,
	EVENT_BUF_LEN - len);
	len += ret;

	if (TST_TOTAL != tst_count) {
	tst_brkm(TBROK, cleanup,
	"TST_TOTAL and tst_count are not equal");
	}
	tst_count = 0;

	/*
	* check events
	*/
	while (i < len) {
	struct fanotify_event_metadata *event;

	event = (struct fanotify_event_metadata *)&event_buf[i];
	if (test_num >= TST_TOTAL) {
	tst_resm(TFAIL,
	"get unnecessary event: mask=%llx "
	"pid=%u fd=%u",
	(unsigned long long)event->mask,
	(unsigned)event->pid, event->fd);
	} else if (!(event->mask & event_set[test_num])) {
	tst_resm(TFAIL,
	"get event: mask=%llx (expected %llx) "
	"pid=%u fd=%u",
	(unsigned long long)event->mask,
	event_set[test_num],
	(unsigned)event->pid, event->fd);
	} else if (event->pid != getpid()) {
	tst_resm(TFAIL,
	"get event: mask=%llx pid=%u "
	"(expected %u) fd=%u",
	(unsigned long long)event->mask,
	(unsigned)event->pid,
	(unsigned)getpid(),
	event->fd);
	} else {
	tst_resm(TPASS,
	"get event: mask=%llx pid=%u fd=%u",
	(unsigned long long)event->mask,
	(unsigned)event->pid, event->fd);
	}
	event->mask &= ~event_set[test_num];
	/* No events left in current mask? Go for next event */
	if (event->mask == 0) {
	i += event->event_len;
	close(event->fd);
	}
	test_num++;
	}
	for (; test_num < TST_TOTAL; test_num++) {
	tst_resm(TFAIL, "didn't get event: mask=%llx",
	event_set[test_num]);

	}
	}

	cleanup();
	tst_exit();
	}

	static void setup(void)
	{
	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	TEST_PAUSE;

	tst_tmpdir();
	sprintf(fname, "fname_%d", getpid());

	if ((fd_notify = fanotify_init(FAN_CLASS_NOTIF, O_RDONLY)) < 0) {
	if (errno == ENOSYS) {
	tst_brkm(TCONF, cleanup,
	"fanotify is not configured in this kernel.");
	} else {
	tst_brkm(TBROK \| TERRNO, cleanup,
	"fanotify_init failed");
	}
	}
	}

	static void cleanup(void)
	{
	if (close(fd_notify) == -1)
	tst_resm(TWARN, "close(%d) failed", fd_notify);

	tst_rmdir();
	}

	#else

	int main(void)
	{
	tst_brkm(TCONF, NULL, "system doesn't have required fanotify support");
	}

	#endif