[LTP] [PATCH v3 2/6] syscalls/readahead02: Convert to newlib and cleanup
Amir Goldstein
amir73il@gmail.com
Thu Oct 11 01:34:37 CEST 2018
* Use SAFE macros
* Use SPDX-License-Identifier
* No need to cleanup test file from temp dir
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
.../kernel/syscalls/readahead/readahead02.c | 248 +++++-------------
1 file changed, 72 insertions(+), 176 deletions(-)
diff --git a/testcases/kernel/syscalls/readahead/readahead02.c b/testcases/kernel/syscalls/readahead/readahead02.c
index c9d92a6a4..c739d3ba2 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 +24,57 @@
#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 +113,21 @@ 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 +156,13 @@ 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 +173,7 @@ 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 +183,23 @@ 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 +207,20 @@ 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 +239,7 @@ 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 +249,7 @@ 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 +257,25 @@ 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 +283,42 @@ 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();
-}
+static struct tst_test test = {
+ .needs_root = 1,
+ .needs_tmpdir = 1,
+ .mount_device = 1,
+ .mntpoint = mntpoint,
+ .setup = setup,
+ .options = options,
+ .test_all = test_readahead,
+};
#else /* __NR_readahead */
-int main(void)
-{
- tst_brkm(TCONF, NULL, "System doesn't support __NR_readahead");
-}
+ TST_TEST_TCONF("System doesn't support __NR_readahead");
#endif
--
2.17.1
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