[v4,1/6] syscalls/readahead02: Convert to newlib and cleanup
diff mbox series

Message ID 20181128164645.783-2-amir73il@gmail.com
State Superseded
Headers show
Series
  • Tests for readahead() and fadvise() on overlayfs
Related show

Commit Message

Amir Goldstein Nov. 28, 2018, 4:46 p.m. UTC
* Use SAFE macros

* Use SPDX-License-Identifier

* No need to cleanup test file from temp dir

* No need to check if __NR_readahead is defined

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 .../kernel/syscalls/readahead/readahead02.c   | 251 +++++-------------
 1 file changed, 71 insertions(+), 180 deletions(-)

Comments

Cyril Hrubis Dec. 3, 2018, 2:39 p.m. UTC | #1
Hi!
> +static struct tst_test test = {
> +	.needs_root = 1,
> +	.needs_tmpdir = 1,
> +	.mount_device = 1,
> +	.mntpoint = mntpoint,
> +	.setup = setup,
> +	.options = options,
> +	.test_all = test_readahead,
> +};

I do wonder if it makes sense to set the all_filesystems flag now.

Also does it make any sense to run the overlay test against all
filesystems? I would expect that it does not, so we will have to figure
out how to run the tests. Maybe it would make most sense to treat the
overlayfs as another filesystem in all_filesystem tests...
Amir Goldstein Dec. 3, 2018, 2:59 p.m. UTC | #2
On Mon, Dec 3, 2018 at 4:41 PM Cyril Hrubis <chrubis@suse.cz> wrote:
>
> Hi!
> > +static struct tst_test test = {
> > +     .needs_root = 1,
> > +     .needs_tmpdir = 1,
> > +     .mount_device = 1,
> > +     .mntpoint = mntpoint,
> > +     .setup = setup,
> > +     .options = options,
> > +     .test_all = test_readahead,
> > +};
>
> I do wonder if it makes sense to set the all_filesystems flag now.
>

That would be fine by me.

> Also does it make any sense to run the overlay test against all
> filesystems?

It does.
Overlayfs may behave differently on different underlying filesystems
depending on their characteristics.

> I would expect that it does not, so we will have to figure
> out how to run the tests. Maybe it would make most sense to treat the
> overlayfs as another filesystem in all_filesystem tests...
>

It does not make sense to treat overlayfs as another filesystem in
all_filesystem tests IMO because:
- "overlayfs" is not a well defined setup, you will need to define the
  underlying filesystem as well, and which one will it be?
- For good test coverage it is best to test, for each fs
  test over fs directly, test over overlayfs + with fs as underlying fs

Thanks,
Amir.

Patch
diff mbox series

diff --git a/testcases/kernel/syscalls/readahead/readahead02.c b/testcases/kernel/syscalls/readahead/readahead02.c
index c9d92a6a4..956a1d5e5 100644
--- a/testcases/kernel/syscalls/readahead/readahead02.c
+++ b/testcases/kernel/syscalls/readahead/readahead02.c
@@ -1,25 +1,6 @@ 
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2012 Linux Test Project, Inc.
- *
- * 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.
  */
 
 /*
@@ -43,86 +24,56 @@ 
 #include <unistd.h>
 #include <fcntl.h>
 #include "config.h"
-#include "test.h"
-#include "safe_macros.h"
+#include "tst_test.h"
 #include "lapi/syscalls.h"
 
-char *TCID = "readahead02";
-int TST_TOTAL = 1;
-
-#if defined(__NR_readahead)
 static char testfile[PATH_MAX] = "testfile";
 static const char drop_caches_fname[] = "/proc/sys/vm/drop_caches";
 static const char meminfo_fname[] = "/proc/meminfo";
 static size_t testfile_size = 64 * 1024 * 1024;
-static int opt_fsize;
 static char *opt_fsizestr;
 static int pagesize;
-static const char *fs_type;
-static const char *device;
-static int mount_flag;
 
 #define MNTPOINT        "mntpoint"
 #define MIN_SANE_READAHEAD (4u * 1024u)
 
-option_t options[] = {
-	{"s:", &opt_fsize, &opt_fsizestr},
+static const char mntpoint[] = MNTPOINT;
+
+static struct tst_option options[] = {
+	{"s:", &opt_fsizestr, "-s    testfile size (default 64MB)"},
 	{NULL, NULL, NULL}
 };
 
-static void setup(void);
-static void cleanup(void);
-
-static void help(void)
-{
-	printf("  -s x    testfile size (default 64MB)\n");
-}
-
 static int check_ret(long expected_ret)
 {
-	if (expected_ret == TEST_RETURN) {
-		tst_resm(TPASS, "expected ret success - "
-			 "returned value = %ld", TEST_RETURN);
+	if (expected_ret == TST_RET) {
+		tst_res(TPASS, "expected ret success - "
+			"returned value = %ld", TST_RET);
 		return 0;
 	}
-	tst_resm(TFAIL | TTERRNO, "unexpected failure - "
-		 "returned value = %ld, expected: %ld",
-		 TEST_RETURN, expected_ret);
+	tst_res(TFAIL | TTERRNO, "unexpected failure - "
+		"returned value = %ld, expected: %ld",
+		TST_RET, expected_ret);
 	return 1;
 }
 
 static int has_file(const char *fname, int required)
 {
-	int ret;
 	struct stat buf;
-	ret = stat(fname, &buf);
-	if (ret == -1) {
-		if (errno == ENOENT)
-			if (required)
-				tst_brkm(TCONF, cleanup, "%s not available",
-					 fname);
-			else
-				return 0;
-		else
-			tst_brkm(TBROK | TERRNO, cleanup, "stat %s", fname);
+
+	if (stat(fname, &buf) == -1) {
+		if (errno != ENOENT)
+			tst_brk(TBROK | TERRNO, "stat %s", fname);
+		if (required)
+			tst_brk(TCONF, "%s not available", fname);
+		return 0;
 	}
 	return 1;
 }
 
 static void drop_caches(void)
 {
-	int ret;
-	FILE *f;
-
-	f = fopen(drop_caches_fname, "w");
-	if (f) {
-		ret = fprintf(f, "1");
-		fclose(f);
-		if (ret < 1)
-			tst_brkm(TBROK, cleanup, "Failed to drop caches");
-	} else {
-		tst_brkm(TBROK, cleanup, "Failed to open drop_caches");
-	}
+	SAFE_FILE_PRINTF(drop_caches_fname, "1");
 }
 
 static unsigned long parse_entry(const char *fname, const char *entry)
@@ -161,32 +112,21 @@  static unsigned long get_cached_size(void)
 
 static void create_testfile(void)
 {
-	FILE *f;
+	int fd;
 	char *tmp;
 	size_t i;
 
-	tst_resm(TINFO, "creating test file of size: %zu", testfile_size);
-	tmp = SAFE_MALLOC(cleanup, pagesize);
+	tst_res(TINFO, "creating test file of size: %zu", testfile_size);
+	tmp = SAFE_MALLOC(pagesize);
 
 	/* round to page size */
 	testfile_size = testfile_size & ~((long)pagesize - 1);
 
-	f = fopen(testfile, "w");
-	if (!f) {
-		free(tmp);
-		tst_brkm(TBROK | TERRNO, cleanup, "Failed to create %s",
-			 testfile);
-	}
-
+	fd = SAFE_CREAT(testfile, 0644);
 	for (i = 0; i < testfile_size; i += pagesize)
-		if (fwrite(tmp, pagesize, 1, f) < 1) {
-			free(tmp);
-			tst_brkm(TBROK, cleanup, "Failed to create %s",
-				 testfile);
-		}
-	fflush(f);
-	fsync(fileno(f));
-	fclose(f);
+		SAFE_WRITE(1, fd, tmp, pagesize);
+	SAFE_FSYNC(fd);
+	SAFE_CLOSE(fd);
 	free(tmp);
 }
 
@@ -215,13 +155,13 @@  static void read_testfile(int do_readahead, const char *fname, size_t fsize,
 	off_t offset = 0;
 	struct timeval now;
 
-	fd = SAFE_OPEN(cleanup, fname, O_RDONLY);
+	fd = SAFE_OPEN(fname, O_RDONLY);
 
 	if (do_readahead) {
 		cached_start = get_cached_size();
 		do {
 			TEST(readahead(fd, offset, fsize - offset));
-			if (TEST_RETURN != 0) {
+			if (TST_RET != 0) {
 				check_ret(0);
 				break;
 			}
@@ -232,7 +172,7 @@  static void read_testfile(int do_readahead, const char *fname, size_t fsize,
 				if (*cached > cached_start) {
 					max_ra_estimate = (1024 *
 						(*cached - cached_start));
-					tst_resm(TINFO, "max ra estimate: %lu",
+					tst_res(TINFO, "max ra estimate: %lu",
 						max_ra_estimate);
 				}
 				max_ra_estimate = MAX(max_ra_estimate,
@@ -242,27 +182,23 @@  static void read_testfile(int do_readahead, const char *fname, size_t fsize,
 			i++;
 			offset += max_ra_estimate;
 		} while ((size_t)offset < fsize);
-		tst_resm(TINFO, "readahead calls made: %zu", i);
+		tst_res(TINFO, "readahead calls made: %zu", i);
 		*cached = get_cached_size();
 
 		/* offset of file shouldn't change after readahead */
-		offset = lseek(fd, 0, SEEK_CUR);
-		if (offset == (off_t) - 1)
-			tst_brkm(TBROK | TERRNO, cleanup, "lseek failed");
+		offset = SAFE_LSEEK(fd, 0, SEEK_CUR);
 		if (offset == 0)
-			tst_resm(TPASS, "offset is still at 0 as expected");
+			tst_res(TPASS, "offset is still at 0 as expected");
 		else
-			tst_resm(TFAIL, "offset has changed to: %lu", offset);
+			tst_res(TFAIL, "offset has changed to: %lu", offset);
 	}
 
 	if (gettimeofday(&now, NULL) == -1)
-		tst_brkm(TBROK | TERRNO, cleanup, "gettimeofday failed");
+		tst_brk(TBROK | TERRNO, "gettimeofday failed");
 	time_start_usec = now.tv_sec * 1000000 + now.tv_usec;
 	read_bytes_start = get_bytes_read();
 
-	p = mmap(NULL, fsize, PROT_READ, MAP_SHARED | MAP_POPULATE, fd, 0);
-	if (p == MAP_FAILED)
-		tst_brkm(TBROK | TERRNO, cleanup, "mmap failed");
+	p = SAFE_MMAP(NULL, fsize, PROT_READ, MAP_SHARED | MAP_POPULATE, fd, 0);
 
 	/* for old kernels, where MAP_POPULATE doesn't work, touch each page */
 	tmp = 0;
@@ -270,20 +206,20 @@  static void read_testfile(int do_readahead, const char *fname, size_t fsize,
 		tmp = tmp ^ p[i];
 	/* prevent gcc from optimizing out loop above */
 	if (tmp != 0)
-		tst_brkm(TBROK, NULL, "This line should not be reached");
+		tst_brk(TBROK, "This line should not be reached");
 
 	if (!do_readahead)
 		*cached = get_cached_size();
 
-	SAFE_MUNMAP(cleanup, p, fsize);
+	SAFE_MUNMAP(p, fsize);
 
 	*read_bytes = get_bytes_read() - read_bytes_start;
 	if (gettimeofday(&now, NULL) == -1)
-		tst_brkm(TBROK | TERRNO, cleanup, "gettimeofday failed");
+		tst_brk(TBROK | TERRNO, "gettimeofday failed");
 	time_end_usec = now.tv_sec * 1000000 + now.tv_usec;
 	*usec = time_end_usec - time_start_usec;
 
-	SAFE_CLOSE(cleanup, fd);
+	SAFE_CLOSE(fd);
 }
 
 static void test_readahead(void)
@@ -302,7 +238,7 @@  static void test_readahead(void)
 	cached_low = get_cached_size();
 	cached_max = cached_max - cached_low;
 
-	tst_resm(TINFO, "read_testfile(0)");
+	tst_res(TINFO, "read_testfile(0)");
 	read_testfile(0, testfile, testfile_size, &read_bytes, &usec, &cached);
 	if (cached > cached_low)
 		cached = cached - cached_low;
@@ -312,7 +248,7 @@  static void test_readahead(void)
 	sync();
 	drop_caches();
 	cached_low = get_cached_size();
-	tst_resm(TINFO, "read_testfile(1)");
+	tst_res(TINFO, "read_testfile(1)");
 	read_testfile(1, testfile, testfile_size, &read_bytes_ra,
 		      &usec_ra, &cached_ra);
 	if (cached_ra > cached_low)
@@ -320,25 +256,25 @@  static void test_readahead(void)
 	else
 		cached_ra = 0;
 
-	tst_resm(TINFO, "read_testfile(0) took: %ld usec", usec);
-	tst_resm(TINFO, "read_testfile(1) took: %ld usec", usec_ra);
+	tst_res(TINFO, "read_testfile(0) took: %ld usec", usec);
+	tst_res(TINFO, "read_testfile(1) took: %ld usec", usec_ra);
 	if (has_file(proc_io_fname, 0)) {
-		tst_resm(TINFO, "read_testfile(0) read: %ld bytes", read_bytes);
-		tst_resm(TINFO, "read_testfile(1) read: %ld bytes",
-			 read_bytes_ra);
+		tst_res(TINFO, "read_testfile(0) read: %ld bytes", read_bytes);
+		tst_res(TINFO, "read_testfile(1) read: %ld bytes",
+			read_bytes_ra);
 		/* actual number of read bytes depends on total RAM */
 		if (read_bytes_ra < read_bytes)
-			tst_resm(TPASS, "readahead saved some I/O");
+			tst_res(TPASS, "readahead saved some I/O");
 		else
-			tst_resm(TFAIL, "readahead failed to save any I/O");
+			tst_res(TFAIL, "readahead failed to save any I/O");
 	} else {
-		tst_resm(TCONF, "Your system doesn't have /proc/pid/io,"
-			 " unable to determine read bytes during test");
+		tst_res(TCONF, "Your system doesn't have /proc/pid/io,"
+			" unable to determine read bytes during test");
 	}
 
-	tst_resm(TINFO, "cache can hold at least: %ld kB", cached_max);
-	tst_resm(TINFO, "read_testfile(0) used cache: %ld kB", cached);
-	tst_resm(TINFO, "read_testfile(1) used cache: %ld kB", cached_ra);
+	tst_res(TINFO, "cache can hold at least: %ld kB", cached_max);
+	tst_res(TINFO, "read_testfile(0) used cache: %ld kB", cached);
+	tst_res(TINFO, "read_testfile(1) used cache: %ld kB", cached_ra);
 
 	if (cached_max * 1024 >= testfile_size) {
 		/*
@@ -346,83 +282,38 @@  static void test_readahead(void)
 		 * for readahead should be at least testfile_size/2
 		 */
 		if (cached_ra * 1024 > testfile_size / 2)
-			tst_resm(TPASS, "using cache as expected");
+			tst_res(TPASS, "using cache as expected");
 		else
-			tst_resm(TWARN, "using less cache than expected");
+			tst_res(TWARN, "using less cache than expected");
 	} else {
-		tst_resm(TCONF, "Page cache on your system is too small "
-			 "to hold whole testfile.");
+		tst_res(TCONF, "Page cache on your system is too small "
+			"to hold whole testfile.");
 	}
 }
 
-int main(int argc, char *argv[])
-{
-	int lc;
-
-	tst_parse_opts(argc, argv, options, help);
-
-	if (opt_fsize)
-		testfile_size = atoi(opt_fsizestr);
-
-	setup();
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-		tst_count = 0;
-		test_readahead();
-	}
-	cleanup();
-	tst_exit();
-}
-
 static void setup(void)
 {
-	tst_require_root();
-	tst_tmpdir();
-	TEST_PAUSE;
+	if (opt_fsizestr)
+		testfile_size = SAFE_STRTOL(opt_fsizestr, 1, INT_MAX);
 
 	has_file(drop_caches_fname, 1);
 	has_file(meminfo_fname, 1);
 
 	/* check if readahead is supported */
-	ltp_syscall(__NR_readahead, 0, 0, 0);
+	tst_syscall(__NR_readahead, 0, 0, 0);
 
 	pagesize = getpagesize();
 
-	if (tst_fs_type(cleanup, ".") == TST_TMPFS_MAGIC) {
-		tst_resm(TINFO, "TMPFS detected, creating loop device");
-
-		fs_type = tst_dev_fs_type();
-		device = tst_acquire_device(cleanup);
-		if (!device) {
-			tst_brkm(TCONF, cleanup,
-				"Failed to obtain block device");
-		}
-
-		tst_mkfs(cleanup, device, fs_type, NULL, NULL);
-
-		SAFE_MKDIR(cleanup, MNTPOINT, 0755);
-		SAFE_MOUNT(cleanup, device, MNTPOINT, fs_type, 0, NULL);
-		mount_flag = 1;
-
-		sprintf(testfile, MNTPOINT"/testfile");
-	}
+	sprintf(testfile, "%s/testfile", mntpoint);
 	create_testfile();
 }
 
-static void cleanup(void)
-{
-	unlink(testfile);
-	if (mount_flag && tst_umount(MNTPOINT) < 0)
-		tst_resm(TWARN | TERRNO, "umount device:%s failed", device);
-
-	if (device)
-		tst_release_device(device);
-
-	tst_rmdir();
-}
-
-#else /* __NR_readahead */
-int main(void)
-{
-	tst_brkm(TCONF, NULL, "System doesn't support __NR_readahead");
-}
-#endif
+static struct tst_test test = {
+	.needs_root = 1,
+	.needs_tmpdir = 1,
+	.mount_device = 1,
+	.mntpoint = mntpoint,
+	.setup = setup,
+	.options = options,
+	.test_all = test_readahead,
+};