You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
125 lines
2.7 KiB
125 lines
2.7 KiB
7 months ago
|
/*
|
||
|
|
* Copyright (c) International Business Machines Corp., 2001
|
||
|
|
* 07/2001 Ported by Wayne Boyer
|
||
|
|
*
|
||
|
|
* Copyright (c) 2013 Cyril Hrubis <chrubis@suse.cz>
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* DESCRIPTION
|
||
|
|
* Testcase to check the basic functionality of the readv(2) system call.
|
||
|
|
*
|
||
|
|
* ALGORITHM
|
||
|
|
* Create a IO vector, and attempt to readv() various components of it.
|
||
|
|
*/
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/uio.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <memory.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
#include "test.h"
|
||
|
|
#include "safe_macros.h"
|
||
|
|
|
||
|
|
#define CHUNK 64
|
||
|
|
|
||
|
|
char *TCID = "readv01";
|
||
|
|
int TST_TOTAL = 1;
|
||
|
|
|
||
|
|
static char buf[CHUNK];
|
||
|
|
|
||
|
|
static struct iovec rd_iovec[] = {
|
||
|
|
{buf, CHUNK},
|
||
|
|
{NULL, 0},
|
||
|
|
{NULL, 0},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int fd;
|
||
|
|
|
||
|
|
static void setup(void);
|
||
|
|
static void cleanup(void);
|
||
|
|
|
||
|
|
int main(int ac, char **av)
|
||
|
|
{
|
||
|
|
int lc, i, fail;
|
||
|
|
char *vec;
|
||
|
|
|
||
|
|
tst_parse_opts(ac, av, NULL, NULL);
|
||
|
|
|
||
|
|
setup();
|
||
|
|
|
||
|
|
for (lc = 0; TEST_LOOPING(lc); lc++) {
|
||
|
|
tst_count = 0;
|
||
|
|
|
||
|
|
SAFE_LSEEK(cleanup, fd, 0, SEEK_SET);
|
||
|
|
|
||
|
|
if (readv(fd, rd_iovec, 0) == -1)
|
||
|
|
tst_resm(TFAIL | TERRNO, "readv failed unexpectedly");
|
||
|
|
else
|
||
|
|
tst_resm(TPASS, "readv read 0 io vectors");
|
||
|
|
|
||
|
|
memset(rd_iovec[0].iov_base, 0x00, CHUNK);
|
||
|
|
|
||
|
|
if (readv(fd, rd_iovec, 3) != CHUNK) {
|
||
|
|
tst_resm(TFAIL, "readv failed reading %d bytes, "
|
||
|
|
"followed by two NULL vectors", CHUNK);
|
||
|
|
} else {
|
||
|
|
fail = 0;
|
||
|
|
vec = rd_iovec[0].iov_base;
|
||
|
|
|
||
|
|
for (i = 0; i < CHUNK; i++) {
|
||
|
|
if (vec[i] != 0x42)
|
||
|
|
fail++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (fail)
|
||
|
|
tst_resm(TFAIL, "Wrong buffer content");
|
||
|
|
else
|
||
|
|
tst_resm(TPASS, "readv passed reading %d bytes "
|
||
|
|
"followed by two NULL vectors", CHUNK);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
cleanup();
|
||
|
|
tst_exit();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void setup(void)
|
||
|
|
{
|
||
|
|
tst_sig(NOFORK, DEF_HANDLER, cleanup);
|
||
|
|
|
||
|
|
TEST_PAUSE;
|
||
|
|
|
||
|
|
tst_tmpdir();
|
||
|
|
|
||
|
|
memset(buf, 0x42, sizeof(buf));
|
||
|
|
|
||
|
|
fd = SAFE_OPEN(cleanup, "data_file", O_WRONLY | O_CREAT, 0666);
|
||
|
|
SAFE_WRITE(cleanup, 1, fd, buf, sizeof(buf));
|
||
|
|
SAFE_CLOSE(cleanup, fd);
|
||
|
|
fd = SAFE_OPEN(cleanup, "data_file", O_RDONLY);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void cleanup(void)
|
||
|
|
{
|
||
|
|
if (fd > 0)
|
||
|
|
close(fd);
|
||
|
|
|
||
|
|
tst_rmdir();
|
||
|
|
}
|