[LTP] [PATCH 3/5] syscalls/asyncio02: convert to new library.

[Sandeep Patil <sspatil@android.com>]

Drop several duplicate test cases along the way

Signed-off-by: Sandeep Patil <sspatil@android.com>
---
 testcases/kernel/syscalls/asyncio/asyncio02.c | 323 ++++--------------
 1 file changed, 61 insertions(+), 262 deletions(-)

diff --git a/testcases/kernel/syscalls/asyncio/asyncio02.c b/testcases/kernel/syscalls/asyncio/asyncio02.c
index e532cc287..d86a0af9c 100644
--- a/testcases/kernel/syscalls/asyncio/asyncio02.c
+++ b/testcases/kernel/syscalls/asyncio/asyncio02.c
@@ -1,94 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+
 /*
  * Copyright (c) 2000 Silicon Graphics, Inc.  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.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
- *
- */
-/* $Id: asyncio02.c,v 1.6 2009/08/28 11:17:39 vapier Exp $ */
-/************************************************************
- * OS Test - Silicon Graphics, Inc.
- * Mendota Heights, Minnesota
- *
- * TEST IDENTIFIER:  aiotcs02:  write/close flushes data to the file
- *
- * PARENT DOCUMENT:  aiotds01:  kernel i/o
- *
  * AUTHOR: Barrie Kletscher
- *
  * CO-PILOT: Dave Baumgartner
- *
- * TEST ITEMS:
- * 	for each open flags set used:
- * 	1. Multiple writes to a file work as specified for
- * 	   more than BUFSIZ bytes.
- * 	2. Multiple writes to a file work as specified for
- * 	   BUFSIZ bytes.
- * 	3. Multiple writes to a file work as specified for
- * 	   lower than BUFSIZ bytes.
- *
- * INPUT SPECIFICATIONS:
- * 	Standard parse_opts supported options.
- *$
- * OUTPUT SPECIFICATIONS
- * 	Standard tst_res output format
- *
- * ENVIRONMENTAL NEEDS:
- * 	This program uses the environment variable TMPDIR for the location
- * 	of the temporary directory.
- *
- *
- * SPECIAL PROCEDURAL REQUIREMENTS:
- * 	The program must be linked with tst_*.o and parse_opts.o.
- *
- * INTERCASE DEPENDENCIES:
- * 	NONE.
- *
- * DETAILED DESCRIPTION:
- * 	Attempt to get some memory to work with.
- * 	Call testrun writing (BUFSIZ + 1) bytes
- * 	Call testrun writing BUFSIZ bytes
- * 	Repeated call to testrun() with decreasing write sizes
- * 		less than BUFSIZ
- * 	End
- *
- * 	Start testrun()
- * 	Attempt to open a temporary file.
- * 	Write the memory to the file.
- * 	Attempt to close the file which also flushes the buffers.
- * 	Now check to see if the number of bytes written is the
- * 		same as the number of bytes in the file.
- * 	Cleanup
- *
- * BUGS:
- * 	NONE.
- *
-************************************************************/
+ */
 
 #include <fcntl.h>
 #include <sys/types.h>
@@ -96,199 +12,82 @@
 #include <sys/signal.h>
 #include <errno.h>
 #include <stdlib.h>
-#include "test.h"
-#include "safe_macros.h"
-
-#define FLAG O_RDWR | O_CREAT | O_TRUNC	/* Flags used when opening temp tile */
-#define MODE  0777		/* Mode to open file with */
-#define WRITES 10		/* Number of times buffer is written */
-#define DECR 1000		/* Number of bytes decremented between */
-					/* Calls to testrun() */
-#define OK -1			/* Return value from testrun() */
-
-#define FNAME1	"aio02.1"
-#define FNAME2	"aio02.2"
-#define FNAME3	"aio02.3"
-
-#define ERR_MSG1 "Bytes in file not equal to bytes written."
-#define ERR_MSG2 "Bytes in file (%d) not equal to bytes written (%d)."
-
-char *dp;			/* pointer to area of memory */
-
-void setup();
-void cleanup();
-int testrun(int flag, int bytes, int ti);
-
-char *TCID = "asyncio02";
-int TST_TOTAL = 6;
-
-char *filename;			/* name of the temporary file */
-
-char *Progname;
-int Open_flags;
-
-int Flags[] = {
-	O_RDWR | O_CREAT | O_TRUNC,
-	O_RDWR | O_CREAT | O_TRUNC
+#include "tst_test.h"
+
+/* Temporary file names */
+#define FNAME1	"asyncio02.1"
+#define FNAME2	"asyncio02.2"
+
+/* Number of times each buffer is written */
+#define NUM_WRITES	(10)
+#define BUFSIZE		(4096)
+
+char *buffer;
+
+static struct test_case {
+	const char *filename;
+	size_t bytes_to_write;
+	size_t decrement;
+} tcases[] = {
+	/* Write and verify BUFSIZE byte chunks */
+	{ FNAME1, BUFSIZE, BUFSIZE },
+	/* Write and verify decreasing chunk sizes */
+	{ FNAME2, BUFSIZE, 1000 }
 };
 
-int Num_flags;
-
-/***********************************************************************
- * MAIN
- ***********************************************************************/
-int main(int ac, char **av)
+void verify(const char *fname, size_t bytes, size_t decrement)
 {
-
-	int i;
-	int ret_val;
-	int eok;		/* everything is ok flag */
-	int lc;
-	int flag_cnt;
-
-	Num_flags = sizeof(Flags) / sizeof(int);
-	TST_TOTAL = 3 * Num_flags;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-
-		tst_count = 0;
-
-		for (flag_cnt = 0; flag_cnt < Num_flags; flag_cnt++) {
-
-			/*
-			 * call testrun writing (BUFSIZ + 1) byte chunks
-			 */
-
-			filename = FNAME1;
-			if (testrun(Flags[flag_cnt], BUFSIZ + 1, 1) != OK) {
-				tst_resm(TFAIL, ERR_MSG1);
-			} else {
-				tst_resm(TPASS,
-					 "More than BUFSIZE bytes multiple synchronous writes to a file check out ok");
-			}
-
-			/*
-			 * call testrun writing BUFSIZ byte chunks
-			 */
-
-			filename = FNAME2;
-			if (testrun(Flags[flag_cnt], BUFSIZ, 2) != OK) {
-				tst_resm(TFAIL, ERR_MSG1);
-			} else {
-				tst_resm(TPASS,
-					 "BUFSIZE bytes multiple synchronous writes to a file checks out ok");
-			}
-
-			/*
-			 * while the byte chunks are greater than 0
-			 *      call testrun() with decreasing chunk sizes
-			 */
-
-			filename = FNAME3;
-			eok = 1;
-			for (i = BUFSIZ - 1; i >= 0; i -= DECR) {
-				if ((ret_val =
-				     testrun(Flags[flag_cnt], i, 3)) != OK) {
-					tst_resm(TFAIL, ERR_MSG2, ret_val,
-						 i * WRITES);
-				}
-			}
-
-			if (eok) {
-				tst_resm(TPASS,
-					 "Less than BUFSIZE bytes multiple synchronous writes to a file checks out ok");
-			}
+	struct stat s;
+	int fd, i;
+	size_t bytes_written = 0;
+
+	fd = SAFE_OPEN(fname, O_CREAT | O_TRUNC | O_RDWR, 0777);
+	while (bytes > 0) {
+		for (i = 0; i < NUM_WRITES; i++) {
+			SAFE_WRITE(1, fd, buffer, bytes);
+			bytes_written += bytes;
 		}
+		bytes -= bytes > decrement ? decrement : bytes;
 	}
-	cleanup();
-	tst_exit();
-}				/* end main() */
-
-int testrun(int flag, int bytes, int ti)
-{
-
-	int fildes, i, ret;
 
-	struct stat buffer;	/* buffer of memory required for stat command */
+	SAFE_CLOSE(fd);
+	SAFE_STAT(fname, &s);
+	SAFE_UNLINK(fname);
 
 	/*
-	 *      Attempt to open a temporary file.
+	 *  Now check to see if the number of bytes written was
+	 *  the same as the number of bytes in the file.
 	 */
-
-	if ((fildes = open(filename, flag, MODE)) == -1) {
-		tst_brkm(TBROK | TERRNO, cleanup, "open(%s) failed", filename);
+	if (s.st_size != (off_t) bytes_written) {
+		tst_res(TFAIL, "file size (%zu) not as expected (%zu) bytes",
+				s.st_size, bytes_written);
+		return;
 	}
 
-	/*
-	 *      Write the memory to the file.
-	 */
-
-	for (i = 0; i < WRITES; i++) {
-		TEST(write(fildes, dp, (unsigned)bytes));
-
-		if (TEST_RETURN == -1) {
-			tst_brkm(TBROK | TTERRNO, cleanup, "write() failed");
-		}
-	}			/* end for () */
-
-	/*
-	 *      Attempt to close the file which also flushes the buffers.
-	 */
-
-	SAFE_CLOSE(cleanup, fildes);
-
-	ret = OK;
-
-	/*
-	 *  Now check to see if the number of bytes written is the
-	 *  same as the number of bytes in the file.
-	 */
-
-	SAFE_STAT(cleanup, filename, &buffer);
-
-	if (buffer.st_size != (off_t) (bytes * WRITES)) {
-		ret = (int)buffer.st_size;
-	}
-
-	SAFE_UNLINK(cleanup, filename);
+	tst_res(TPASS, "File size reported as expected");
+}
 
-	return ret;
+void verify_asynchronous_io(unsigned int nr)
+{
+	struct test_case *tcase = &tcases[nr];
 
-}				/* end testrun() */
+	verify(tcase->filename, tcase->bytes_to_write, tcase->decrement);
+}
 
-/***************************************************************
- * setup() - performs all ONE TIME setup for this test.
- ***************************************************************/
 void setup(void)
 {
-
-	tst_sig(FORK, DEF_HANDLER, cleanup);
-
-	TEST_PAUSE;
-
-	/* create a temporary directory and go to it */
-	tst_tmpdir();
-
-	/*
-	 *  Attempt to get some memory to work with.
-	 */
-
-	if ((dp = malloc((unsigned)BUFSIZ + 1)) == NULL) {
-		tst_brkm(TBROK | TERRNO, cleanup, "malloc() failed");
-	}
-
+	buffer = SAFE_MALLOC(BUFSIZE);
 }
 
-/***************************************************************
- * cleanup() - performs all ONE TIME cleanup for this test at
- *              completion or premature exit.
- ***************************************************************/
 void cleanup(void)
 {
-
-	tst_rmdir();
+	free(buffer);
 }
+
+static struct tst_test test = {
+	.tcnt = ARRAY_SIZE(tcases),
+	.needs_tmpdir = 1,
+	.test = verify_asynchronous_io,
+	.setup = setup,
+	.cleanup = cleanup,
+};
-- 
2.21.0.1020.gf2820cf01a-goog