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Add simple test for the read/write/lseek on posix shm filedescriptor.

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Tested by:	pho
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Konstantin Belousov 2013-08-21 17:47:11 +00:00
parent 940cb0e2bb
commit 7291e2a320
1 changed files with 21 additions and 6 deletions
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27
tools/test/posixshm/shm_test.c
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@ -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);