Author: kib
Date: Wed Aug 21 17:47:11 2013
New Revision: 254604
URL: http://svnweb.freebsd.org/changeset/base/254604
Log:
Add simple test for the read/write/lseek on posix shm filedescriptor.
Tested by: pho
Sponsored by: The FreeBSD Foundation
Modified:
head/tools/test/posixshm/shm_test.c
Modified: head/tools/test/posixshm/shm_test.c
==============================================================================
--- head/tools/test/posixshm/shm_test.c Wed Aug 21 17:45:00 2013
(r254603)
+++ head/tools/test/posixshm/shm_test.c Wed Aug 21 17:47:11 2013
(r254604)
@@ -21,7 +21,7 @@
* Signal handler which does nothing.
*/
static void
-ignoreit(int sig)
+ignoreit(int sig __unused)
{
;
}
@@ -29,13 +29,13 @@ ignoreit(int sig)
int
main(int argc, char **argv)
{
- char buf[1024], *cp;
- int desc, rv;
+ char buf[1024], *cp, c;
+ int error, desc, rv;
long scval;
sigset_t ss;
struct sigaction sa;
void *region;
- size_t psize;
+ size_t i, psize;
#ifndef _POSIX_SHARED_MEMORY_OBJECTS
printf("_POSIX_SHARED_MEMORY_OBJECTS is undefined\n");
@@ -118,14 +118,29 @@ main(int argc, char **argv)
sigemptyset(&ss);
sigsuspend(&ss);
- for (cp = region; cp < (char *)region + psize; cp++)
+ for (cp = region; cp < (char *)region + psize; cp++) {
if (*cp != '\151')
_exit(1);
+ }
+ if (lseek(desc, 0, SEEK_SET) == -1)
+ _exit(1);
+ for (i = 0; i < psize; i++) {
+ error = read(desc, &c, 1);
+ if (c != '\151')
+ _exit(1);
+ }
_exit(0);
} else {
int status;
- memset(region, '\151', psize);
+ memset(region, '\151', psize - 2);
+ error = pwrite(desc, region, 2, psize - 2);
+ if (error != 2) {
+ if (error >= 0)
+ errx(1, "short write %d", error);
+ else
+ err(1, "shmfd write");
+ }
kill(rv, SIGUSR1);
waitpid(rv, &status, 0);
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