[LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error number test for access(2)

[LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error number test for access(2)

[Wang xiaoguang]

create a case to test ELOOP, ENOTDIR, EROFS error number for access(2)

Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
---
 runtest/syscalls                            |    1 +
 testcases/kernel/syscalls/.gitignore        |    1 +
 testcases/kernel/syscalls/access/access06.c |  245
+++++++++++++++++++++++++++
 3 files changed, 247 insertions(+), 0 deletions(-)
 create mode 100644 testcases/kernel/syscalls/access/access06.c

diff --git a/runtest/syscalls b/runtest/syscalls
index 09e5f7f..791de7c 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -9,6 +9,7 @@ access02 access02
 access03 access03
 access04 access04
 access05 access05
+access06 access06 -D DEVICE -T DEVICE_FS_TYPE
 
 acct01 acct01
 acct02 acct02
diff --git a/testcases/kernel/syscalls/.gitignore
b/testcases/kernel/syscalls/.gitignore
index ad23c2e..c005111 100644
--- a/testcases/kernel/syscalls/.gitignore
+++ b/testcases/kernel/syscalls/.gitignore
@@ -6,6 +6,7 @@
 /access/access03
 /access/access04
 /access/access05
+/access/access06
 /acct/acct01
 /acct/acct02
 /add_key/add_key01
diff --git a/testcases/kernel/syscalls/access/access06.c
b/testcases/kernel/syscalls/access/access06.c
new file mode 100644
index 0000000..c4a6dff
--- /dev/null
+++ b/testcases/kernel/syscalls/access/access06.c
@@ -0,0 +1,245 @@
+/*
+ *   Copyright (C) 2013 Fujitsu Ltd.
+ *   Author: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
+ *
+ *   This program is free software;  you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+ *   the GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program;  if not, write to the Free Software
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
+ */
+
+/*
+ * Test Description:
+ *  Verify that,
+ *   1. access() fails with -1 return value and sets errno to ENOTDIR
+ *	if a component used as a directory in pathname is not a directory.
+ *   2. access() fails with -1 return value and sets errno to ELOOP
+ *	if too many symbolic links were encountered in resolving pathname.
+ *   3. access() fails with -1 return value and sets errno to EROFS
+ *	if write permission was requested for a file on a read-only file
system
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <pwd.h>
+
+#include "test.h"
+#include "usctest.h"
+#include "safe_macros.h"
+
+
+static void setup(void);
+static void cleanup(void);
+
+static void help(void);
+static void setup1(void);
+static void setup2(void);
+static void setup3(void);
+
+#define FILE_MODE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
+#define DIR_MODE	(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
+				S_IXGRP|S_IROTH|S_IXOTH)
+
+#define TEST_FILE1	"test_file1/test_file2"
+#define TEST_FILE2	"test_file3"
+#define TEST_FILE3	"mntpoint"
+
+static const char mntpoint[] = "mntpoint";
+static const char *fs_type = "ext3";
+static char *fstype;
+static char *device;
+static int tflag;
+static int dflag;
+static int mount_flag;
+
+static option_t options[] = {
+	{"T:", &tflag, &fstype},
+	{"D:", &dflag, &device},
+	{NULL, NULL, NULL}
+};
+
+static struct test_case_t {
+	char *pathname;
+	int a_mode;
+	int exp_errno;
+	void (*setupfunc) (void);
+} test_cases[] = {
+	{TEST_FILE1, R_OK, ENOTDIR, setup1},
+	{TEST_FILE2, R_OK, ELOOP, setup2},
+	{TEST_FILE3, W_OK, EROFS, setup3}
+};
+
+char *TCID = "access06";
+int TST_TOTAL = sizeof(test_cases) / sizeof(*test_cases);
+static int exp_enos[] = { ENOTDIR, ELOOP, EROFS, 0 };
+
+int main(int ac, char **av)
+{
+	int lc;
+	char *msg;
+	char *file_name;
+	int access_mode;
+	int i;
+
+	msg = parse_opts(ac, av, options, help);
+	if (msg != NULL)
+		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+
+	/* Check for mandatory option of the testcase */
+	if (!dflag)
+		tst_brkm(TBROK, NULL, "you must specify the device used "
+			 "for mounting with -D option");
+	if (tflag)
+		fs_type = fstype;
+
+	setup();
+
+	TEST_EXP_ENOS(exp_enos);
+
+	for (lc = 0; TEST_LOOPING(lc); lc++) {
+		tst_count = 0;
+
+		for (i = 0; i < TST_TOTAL; i++) {
+			file_name = test_cases[i].pathname;
+			access_mode = test_cases[i].a_mode;
+
+			/*
+			 * Call access(2) to test different test conditions.
+			 * verify that it fails with -1 return value and
+			 * sets appropriate errno.
+			 */
+			TEST(access(file_name, access_mode));
+
+			if (TEST_RETURN != -1) {
+				tst_resm(TFAIL, "access(%s, %#o)"
+					 "succeeded unexpectedly",
+					 file_name, access_mode);
+				continue;
+			}
+
+			if (TEST_ERRNO == test_cases[i].exp_errno)
+				tst_resm(TPASS | TTERRNO,
+					 "access failed as expected");
+			else
+				tst_resm(TFAIL | TTERRNO,
+					 "access failed unexpectedly;"
+					 "expected: %d - %s",
+					 test_cases[i].exp_errno,
+					 strerror(test_cases[i].exp_errno));
+		}
+	}
+
+	cleanup();
+	tst_exit();
+}
+
+static void setup(void)
+{
+	int i;
+
+	tst_sig(NOFORK, DEF_HANDLER, cleanup);
+
+	tst_require_root(NULL);
+
+	tst_mkfs(NULL, device, fstype, NULL);
+
+	tst_tmpdir();
+
+	SAFE_MKDIR(cleanup, mntpoint, DIR_MODE);
+
+	TEST_PAUSE;
+
+	for (i = 0; i < TST_TOTAL; i++)
+		if (test_cases[i].setupfunc != NULL)
+			test_cases[i].setupfunc();
+}
+
+static void setup_file(const char *file, mode_t perms)
+{
+	int fd = open(file, O_RDWR | O_CREAT, FILE_MODE);
+
+	if (fd == -1)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "open(%s, O_RDWR|O_CREAT, %#o) failed",
+			 file, FILE_MODE);
+
+	if (fchmod(fd, perms) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "fchmod(%s, %#o) failed", file, perms);
+	if (close(fd) == -1)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "close(%s) failed", file);
+}
+
+/*
+ * setup1() -setup to create two regular files: test_file1 and test_file2
+ */
+static void setup1(void)
+{
+	setup_file("test_file1", 0644);
+	setup_file("test_file2", 0644);
+}
+
+/*
+ *setup2() -setup to create two symbolic links who point to each other.
+ */
+static void setup2(void)
+{
+	if (mkdir("dir1", 0755) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "create temporary directory dir1 failed");
+	if (symlink("dir1/test_file3", "test_file3") < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "create symbolink test_file3 to "
+			 "dir1/test_file3 failed");
+	if (symlink("../test_file3", "dir1/test_file3") < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "create symbolink test_file3 in dir1 to "
+			 "../test_file3 failed");
+}
+
+/*
+ *setup3() -setup to mount a readonly file system
+ */
+static void setup3(void)
+{
+	if (mount(device, mntpoint, fs_type, MS_RDONLY, NULL) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "mount device:%s failed", device);
+	mount_flag = 1;
+}
+
+static void cleanup(void)
+{
+	TEST_CLEANUP;
+
+	if (mount_flag && umount(mntpoint) < 0)
+		tst_brkm(TBROK | TERRNO, cleanup,
+			 "umount device:%s failed", device);
+	mount_flag = 0;
+	tst_rmdir();
+}
+
+static void help(void)
+{
+	printf("-T type	 : specifies the type of filesystem to be mounted."
+	       " Default ext3.\n");
+	printf("-D device: device used for mounting.\n");
+}
-- 
1.7.1

Regards,
Xiaoguang Wang



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Re: [LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error number test for access(2)

[chrubis]

Hi!
>  acct01 acct01
>  acct02 acct02
> diff --git a/testcases/kernel/syscalls/.gitignore
> b/testcases/kernel/syscalls/.gitignore
> index ad23c2e..c005111 100644
> --- a/testcases/kernel/syscalls/.gitignore
> +++ b/testcases/kernel/syscalls/.gitignore
> @@ -6,6 +6,7 @@
>  /access/access03
>  /access/access04
>  /access/access05
> +/access/access06
>  /acct/acct01
>  /acct/acct02
>  /add_key/add_key01
> diff --git a/testcases/kernel/syscalls/access/access06.c
> b/testcases/kernel/syscalls/access/access06.c
> new file mode 100644
> index 0000000..c4a6dff
> --- /dev/null
> +++ b/testcases/kernel/syscalls/access/access06.c
> @@ -0,0 +1,245 @@
> +/*
> + *   Copyright (C) 2013 Fujitsu Ltd.
> + *   Author: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
> + *
> + *   This program is free software;  you can redistribute it and/or modify
> + *   it under the terms of the GNU General Public License as published by
> + *   the Free Software Foundation; either version 2 of the License, or
> + *   (at your option) any later version.
> + *
> + *   This program is distributed in the hope that it will be useful,
> + *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
> + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> + *   the GNU General Public License for more details.
> + *
> + *   You should have received a copy of the GNU General Public License
> + *   along with this program;  if not, write to the Free Software
> + *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA

This line overflows 80 chars and in this case to the next line. It would
be better to remove the two more spaces before before the * and the
text blocks, so that the paragraphs fits to 80 chars.

> + */
> +
> +/*
> + * Test Description:
> + *  Verify that,
> + *   1. access() fails with -1 return value and sets errno to ENOTDIR
> + *	if a component used as a directory in pathname is not a directory.
> + *   2. access() fails with -1 return value and sets errno to ELOOP
> + *	if too many symbolic links were encountered in resolving pathname.
> + *   3. access() fails with -1 return value and sets errno to EROFS
> + *	if write permission was requested for a file on a read-only file
> system

Here overflow again, did your mail client wrapped the lines?

> + */
> +
> +#include <stdio.h>
> +#include <errno.h>
> +#include <unistd.h>
> +#include <fcntl.h>
> +#include <string.h>
> +#include <signal.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <sys/mman.h>
> +#include <sys/mount.h>
> +#include <pwd.h>
> +
> +#include "test.h"
> +#include "usctest.h"
> +#include "safe_macros.h"
> +
> +
> +static void setup(void);
> +static void cleanup(void);
> +
> +static void help(void);
> +static void setup1(void);
> +static void setup2(void);
> +static void setup3(void);
> +
> +#define FILE_MODE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
> +#define DIR_MODE	(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
> +				S_IXGRP|S_IROTH|S_IXOTH)
> +
> +#define TEST_FILE1	"test_file1/test_file2"
> +#define TEST_FILE2	"test_file3"
> +#define TEST_FILE3	"mntpoint"
> +
> +static const char mntpoint[] = "mntpoint";
> +static const char *fs_type = "ext3";

The rest of the tests use ext2 as a default. We should make this
consistent, or configurable (i.e. either to default to ext2 in all test
or even better define default fs in ltp headers or as a configure
paramterer).

> +static char *fstype;
> +static char *device;
> +static int tflag;
> +static int dflag;
> +static int mount_flag;
> +
> +static option_t options[] = {
> +	{"T:", &tflag, &fstype},
> +	{"D:", &dflag, &device},
> +	{NULL, NULL, NULL}
> +};

There is no need to have tflag and two of fstype pointers. See mount01.c
on how to make this simplier.

> +static struct test_case_t {
> +	char *pathname;
> +	int a_mode;
> +	int exp_errno;
> +	void (*setupfunc) (void);
> +} test_cases[] = {
> +	{TEST_FILE1, R_OK, ENOTDIR, setup1},
> +	{TEST_FILE2, R_OK, ELOOP, setup2},
> +	{TEST_FILE3, W_OK, EROFS, setup3}
> +};
> +
> +char *TCID = "access06";
> +int TST_TOTAL = sizeof(test_cases) / sizeof(*test_cases);

There is a LTP_ARRAY_SIZE() macro for this.

> +static int exp_enos[] = { ENOTDIR, ELOOP, EROFS, 0 };
> +
> +int main(int ac, char **av)
> +{
> +	int lc;
> +	char *msg;
> +	char *file_name;
> +	int access_mode;
> +	int i;
> +
> +	msg = parse_opts(ac, av, options, help);
> +	if (msg != NULL)
> +		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
> +
> +	/* Check for mandatory option of the testcase */
> +	if (!dflag)
> +		tst_brkm(TBROK, NULL, "you must specify the device used "
> +			 "for mounting with -D option");
> +	if (tflag)
> +		fs_type = fstype;
> +
> +	setup();
> +
> +	TEST_EXP_ENOS(exp_enos);
> +
> +	for (lc = 0; TEST_LOOPING(lc); lc++) {
> +		tst_count = 0;
> +
> +		for (i = 0; i < TST_TOTAL; i++) {
> +			file_name = test_cases[i].pathname;
> +			access_mode = test_cases[i].a_mode;
> +
> +			/*
> +			 * Call access(2) to test different test conditions.
> +			 * verify that it fails with -1 return value and
> +			 * sets appropriate errno.
> +			 */

This comment is useless, please remove it.

> +			TEST(access(file_name, access_mode));
> +
> +			if (TEST_RETURN != -1) {
> +				tst_resm(TFAIL, "access(%s, %#o)"
> +					 "succeeded unexpectedly",
> +					 file_name, access_mode);
> +				continue;
> +			}
> +
> +			if (TEST_ERRNO == test_cases[i].exp_errno)
> +				tst_resm(TPASS | TTERRNO,
> +					 "access failed as expected");
> +			else
> +				tst_resm(TFAIL | TTERRNO,
> +					 "access failed unexpectedly;"
> +					 "expected: %d - %s",
> +					 test_cases[i].exp_errno,
> +					 strerror(test_cases[i].exp_errno));

LKML coding style (as well as LTP) prefers curly braces around code that
spawns around multiple lines, even when it's a single function call.

And moving the innter part to a test() function would help too (you are
too deep in the indentation here because of the for loops).

> +		}
> +	}
> +
> +	cleanup();
> +	tst_exit();
> +}
> +
> +static void setup(void)
> +{
> +	int i;
> +
> +	tst_sig(NOFORK, DEF_HANDLER, cleanup);
> +
> +	tst_require_root(NULL);
> +
> +	tst_mkfs(NULL, device, fstype, NULL);
> +
> +	tst_tmpdir();
> +
> +	SAFE_MKDIR(cleanup, mntpoint, DIR_MODE);
> +
> +	TEST_PAUSE;
> +
> +	for (i = 0; i < TST_TOTAL; i++)
> +		if (test_cases[i].setupfunc != NULL)
> +			test_cases[i].setupfunc();

Given that the setup for each test is done only once I would just write
the code to prepare all the tests here. There is no point in storing the
pointer to individual setup functions if they are called only once from
global setup.

> +}
> +
> +static void setup_file(const char *file, mode_t perms)
> +{
> +	int fd = open(file, O_RDWR | O_CREAT, FILE_MODE);
> +
> +	if (fd == -1)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "open(%s, O_RDWR|O_CREAT, %#o) failed",
> +			 file, FILE_MODE);
> +
> +	if (fchmod(fd, perms) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "fchmod(%s, %#o) failed", file, perms);
> +	if (close(fd) == -1)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "close(%s) failed", file);

Is there any reason why the perms couldn't be passed to the open()
instread of doing open and then fchmod?

> +}
> +
> +/*
> + * setup1() -setup to create two regular files: test_file1 and test_file2
> + */
> +static void setup1(void)
> +{
> +	setup_file("test_file1", 0644);
> +	setup_file("test_file2", 0644);
> +}
> +
> +/*
> + *setup2() -setup to create two symbolic links who point to each other.
> + */
> +static void setup2(void)
> +{
> +	if (mkdir("dir1", 0755) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create temporary directory dir1 failed");
> +	if (symlink("dir1/test_file3", "test_file3") < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create symbolink test_file3 to "
> +			 "dir1/test_file3 failed");
> +	if (symlink("../test_file3", "dir1/test_file3") < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create symbolink test_file3 in dir1 to "
> +			 "../test_file3 failed");

If I'm not mistaken you don't have to create the directory, just symlink
a to b and b to a should do.

Also please make use of safe_macros.h, it will simplify the code
greatly.

> +}
> +
> +/*
> + *setup3() -setup to mount a readonly file system
> + */
> +static void setup3(void)
> +{
> +	if (mount(device, mntpoint, fs_type, MS_RDONLY, NULL) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "mount device:%s failed", device);
> +	mount_flag = 1;
> +}
> +
> +static void cleanup(void)
> +{
> +	TEST_CLEANUP;
> +
> +	if (mount_flag && umount(mntpoint) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "umount device:%s failed", device);
> +	mount_flag = 0;

I guess that you don't have to set the flag to zero here, cleanup is
called only once and that is done before the test exits...

> +	tst_rmdir();
> +}
> +
> +static void help(void)
> +{
> +	printf("-T type	 : specifies the type of filesystem to be mounted."
> +	       " Default ext3.\n");
> +	printf("-D device: device used for mounting.\n");
> +}

Also looking at the access testcases, there is allready access05 to test
access failures, I wonder if it would be better to move the ENOTDIR and
ELOOP tests there (after it's cleaned up a bit). But I'm not sure about
this myself...

-- 
Cyril Hrubis
chrubis@suse.cz

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Re: [LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error number test for access(2)

[chrubis]

Hi!
> > Also looking at the access testcases, there is allready access05 to test
> > access failures, I wonder if it would be better to move the ENOTDIR and
> > ELOOP tests there (after it's cleaned up a bit). But I'm not sure about
> > this myself...
> 
> Since access03 and access05 both contain error number tests for access, 
> I think a new access06 would be better to make the three error number 
> tests clearer.
> If you perfer to add these test to existing tests, I will make a new version
> patch.

Actually after looking at your v2 patch the code is cleaner than the
access05.c, what about moving the testcases from access05 to the test
you written and calling the result access05? Are you OK with that?

-- 
Cyril Hrubis
chrubis@suse.cz

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Re: [LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error number test for access(2)

[Wang xiaoguang]

Here is the log.

<<<test_start>>>
tag=access06 stime=1381829417
cmdline="access06 -D /dev/loop2 -T ext2"
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
access06    0  TINFO  :  Formatting /dev/loop2 with ext2 extra opts=''
mke2fs 1.41.12 (17-May-2010)
access06    1  TPASS  :  access failed as expected: TEST_ERRNO=ENOTDIR(20):
Not a directory
access06    2  TPASS  :  access failed as expected: TEST_ERRNO=???(40): Too
many levels of symbolic links
access06    3  TPASS  :  access failed as expected: TEST_ERRNO=EROFS(30):
Read-only file system
<<<execution_status>>>
initiation_status="ok"
duration=0 termination_type=exited termination_id=0 corefile=no
cutime=0 cstime=0
<<<test_end>>>

Regards,
Xiaoguang, Wang

> -----Original Message-----
> From: Wang xiaoguang [mailto:wangxg.fnst@cn.fujitsu.com]
> Sent: Tuesday, October 15, 2013 5:18 PM
> To: ltp-list@lists.sourceforge.net
> Subject: [LTP] [PATCH] access/access06.c: add ELOOP, ENOTDIR, EROFS error
> number test for access(2)
> 
> create a case to test ELOOP, ENOTDIR, EROFS error number for access(2)
> 
> Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
> ---
>  runtest/syscalls                            |    1 +
>  testcases/kernel/syscalls/.gitignore        |    1 +
>  testcases/kernel/syscalls/access/access06.c |  245
> +++++++++++++++++++++++++++
>  3 files changed, 247 insertions(+), 0 deletions(-)  create mode 100644
> testcases/kernel/syscalls/access/access06.c
> 
> diff --git a/runtest/syscalls b/runtest/syscalls index 09e5f7f..791de7c
100644
> --- a/runtest/syscalls
> +++ b/runtest/syscalls
> @@ -9,6 +9,7 @@ access02 access02
>  access03 access03
>  access04 access04
>  access05 access05
> +access06 access06 -D DEVICE -T DEVICE_FS_TYPE
> 
>  acct01 acct01
>  acct02 acct02
> diff --git a/testcases/kernel/syscalls/.gitignore
> b/testcases/kernel/syscalls/.gitignore
> index ad23c2e..c005111 100644
> --- a/testcases/kernel/syscalls/.gitignore
> +++ b/testcases/kernel/syscalls/.gitignore
> @@ -6,6 +6,7 @@
>  /access/access03
>  /access/access04
>  /access/access05
> +/access/access06
>  /acct/acct01
>  /acct/acct02
>  /add_key/add_key01
> diff --git a/testcases/kernel/syscalls/access/access06.c
> b/testcases/kernel/syscalls/access/access06.c
> new file mode 100644
> index 0000000..c4a6dff
> --- /dev/null
> +++ b/testcases/kernel/syscalls/access/access06.c
> @@ -0,0 +1,245 @@
> +/*
> + *   Copyright (C) 2013 Fujitsu Ltd.
> + *   Author: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
> + *
> + *   This program is free software;  you can redistribute it and/or
modify
> + *   it under the terms of the GNU General Public License as published by
> + *   the Free Software Foundation; either version 2 of the License, or
> + *   (at your option) any later version.
> + *
> + *   This program is distributed in the hope that it will be useful,
> + *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
> + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
> + *   the GNU General Public License for more details.
> + *
> + *   You should have received a copy of the GNU General Public License
> + *   along with this program;  if not, write to the Free Software
> + *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
> 02110-1301 USA
> + */
> +
> +/*
> + * Test Description:
> + *  Verify that,
> + *   1. access() fails with -1 return value and sets errno to ENOTDIR
> + *	if a component used as a directory in pathname is not a directory.
> + *   2. access() fails with -1 return value and sets errno to ELOOP
> + *	if too many symbolic links were encountered in resolving pathname.
> + *   3. access() fails with -1 return value and sets errno to EROFS
> + *	if write permission was requested for a file on a read-only file
> system
> + */
> +
> +#include <stdio.h>
> +#include <errno.h>
> +#include <unistd.h>
> +#include <fcntl.h>
> +#include <string.h>
> +#include <signal.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <sys/mman.h>
> +#include <sys/mount.h>
> +#include <pwd.h>
> +
> +#include "test.h"
> +#include "usctest.h"
> +#include "safe_macros.h"
> +
> +
> +static void setup(void);
> +static void cleanup(void);
> +
> +static void help(void);
> +static void setup1(void);
> +static void setup2(void);
> +static void setup3(void);
> +
> +#define FILE_MODE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
> +#define DIR_MODE	(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
> +				S_IXGRP|S_IROTH|S_IXOTH)
> +
> +#define TEST_FILE1	"test_file1/test_file2"
> +#define TEST_FILE2	"test_file3"
> +#define TEST_FILE3	"mntpoint"
> +
> +static const char mntpoint[] = "mntpoint"; static const char *fs_type =
> +"ext3"; static char *fstype; static char *device; static int tflag;
> +static int dflag; static int mount_flag;
> +
> +static option_t options[] = {
> +	{"T:", &tflag, &fstype},
> +	{"D:", &dflag, &device},
> +	{NULL, NULL, NULL}
> +};
> +
> +static struct test_case_t {
> +	char *pathname;
> +	int a_mode;
> +	int exp_errno;
> +	void (*setupfunc) (void);
> +} test_cases[] = {
> +	{TEST_FILE1, R_OK, ENOTDIR, setup1},
> +	{TEST_FILE2, R_OK, ELOOP, setup2},
> +	{TEST_FILE3, W_OK, EROFS, setup3}
> +};
> +
> +char *TCID = "access06";
> +int TST_TOTAL = sizeof(test_cases) / sizeof(*test_cases); static int
> +exp_enos[] = { ENOTDIR, ELOOP, EROFS, 0 };
> +
> +int main(int ac, char **av)
> +{
> +	int lc;
> +	char *msg;
> +	char *file_name;
> +	int access_mode;
> +	int i;
> +
> +	msg = parse_opts(ac, av, options, help);
> +	if (msg != NULL)
> +		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s",
> msg);
> +
> +	/* Check for mandatory option of the testcase */
> +	if (!dflag)
> +		tst_brkm(TBROK, NULL, "you must specify the device used "
> +			 "for mounting with -D option");
> +	if (tflag)
> +		fs_type = fstype;
> +
> +	setup();
> +
> +	TEST_EXP_ENOS(exp_enos);
> +
> +	for (lc = 0; TEST_LOOPING(lc); lc++) {
> +		tst_count = 0;
> +
> +		for (i = 0; i < TST_TOTAL; i++) {
> +			file_name = test_cases[i].pathname;
> +			access_mode = test_cases[i].a_mode;
> +
> +			/*
> +			 * Call access(2) to test different test conditions.
> +			 * verify that it fails with -1 return value and
> +			 * sets appropriate errno.
> +			 */
> +			TEST(access(file_name, access_mode));
> +
> +			if (TEST_RETURN != -1) {
> +				tst_resm(TFAIL, "access(%s, %#o)"
> +					 "succeeded unexpectedly",
> +					 file_name, access_mode);
> +				continue;
> +			}
> +
> +			if (TEST_ERRNO == test_cases[i].exp_errno)
> +				tst_resm(TPASS | TTERRNO,
> +					 "access failed as expected");
> +			else
> +				tst_resm(TFAIL | TTERRNO,
> +					 "access failed unexpectedly;"
> +					 "expected: %d - %s",
> +					 test_cases[i].exp_errno,
> +					 strerror(test_cases[i].exp_errno));
> +		}
> +	}
> +
> +	cleanup();
> +	tst_exit();
> +}
> +
> +static void setup(void)
> +{
> +	int i;
> +
> +	tst_sig(NOFORK, DEF_HANDLER, cleanup);
> +
> +	tst_require_root(NULL);
> +
> +	tst_mkfs(NULL, device, fstype, NULL);
> +
> +	tst_tmpdir();
> +
> +	SAFE_MKDIR(cleanup, mntpoint, DIR_MODE);
> +
> +	TEST_PAUSE;
> +
> +	for (i = 0; i < TST_TOTAL; i++)
> +		if (test_cases[i].setupfunc != NULL)
> +			test_cases[i].setupfunc();
> +}
> +
> +static void setup_file(const char *file, mode_t perms) {
> +	int fd = open(file, O_RDWR | O_CREAT, FILE_MODE);
> +
> +	if (fd == -1)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "open(%s, O_RDWR|O_CREAT, %#o) failed",
> +			 file, FILE_MODE);
> +
> +	if (fchmod(fd, perms) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "fchmod(%s, %#o) failed", file, perms);
> +	if (close(fd) == -1)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "close(%s) failed", file);
> +}
> +
> +/*
> + * setup1() -setup to create two regular files: test_file1 and
> +test_file2  */ static void setup1(void) {
> +	setup_file("test_file1", 0644);
> +	setup_file("test_file2", 0644);
> +}
> +
> +/*
> + *setup2() -setup to create two symbolic links who point to each other.
> + */
> +static void setup2(void)
> +{
> +	if (mkdir("dir1", 0755) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create temporary directory dir1 failed");
> +	if (symlink("dir1/test_file3", "test_file3") < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create symbolink test_file3 to "
> +			 "dir1/test_file3 failed");
> +	if (symlink("../test_file3", "dir1/test_file3") < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "create symbolink test_file3 in dir1 to "
> +			 "../test_file3 failed");
> +}
> +
> +/*
> + *setup3() -setup to mount a readonly file system  */ static void
> +setup3(void) {
> +	if (mount(device, mntpoint, fs_type, MS_RDONLY, NULL) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "mount device:%s failed", device);
> +	mount_flag = 1;
> +}
> +
> +static void cleanup(void)
> +{
> +	TEST_CLEANUP;
> +
> +	if (mount_flag && umount(mntpoint) < 0)
> +		tst_brkm(TBROK | TERRNO, cleanup,
> +			 "umount device:%s failed", device);
> +	mount_flag = 0;
> +	tst_rmdir();
> +}
> +
> +static void help(void)
> +{
> +	printf("-T type	 : specifies the type of filesystem to be mounted."
> +	       " Default ext3.\n");
> +	printf("-D device: device used for mounting.\n"); }
> --
> 1.7.1
> 
> Regards,
> Xiaoguang Wang
> 
> 
> 
>
----------------------------------------------------------------------------
--
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> trk
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Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from 
the latest Intel processors and coprocessors. See abstracts and register >
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