static
void
wait_siblings(void)
{
int pids[2], fd, rv, x;
/* Note: this may also blow up if FS synchronization is substandard */
fd = open_testfile(NULL);
if (fd<0) {
return;
}
pids[0] = fork();
if (pids[0]<0) {
warn("UH-OH: can't fork");
return;
}
if (pids[0]==0) {
close(fd);
wait_siblings_child();
_exit(0);
}
pids[1] = fork();
if (pids[1]<0) {
warn("UH-OH: can't fork");
/* abandon the other child process :( */
return;
}
if (pids[1]==0) {
close(fd);
wait_siblings_child();
_exit(0);
}
rv = write(fd, pids, sizeof(pids));
if (rv < 0) {
warn("UH-OH: write error on %s", TESTFILE);
/* abandon child procs :( */
return;
}
if (rv != (int)sizeof(pids)) {
warnx("UH-OH: write error on %s: short count", TESTFILE);
/* abandon child procs :( */
return;
}
rv = waitpid(pids[0], &x, 0);
if (rv<0) {
warn("UH-OH: error waiting for child 0 (pid %d)", pids[0]);
}
rv = waitpid(pids[1], &x, 0);
if (rv<0) {
warn("UH-OH: error waiting for child 1 (pid %d)", pids[1]);
}
warnx("passed: siblings wait for each other");
close(fd);
remove(TESTFILE);
}
static
int
wait_siblings(void)
{
pid_t pids[2];
int rv, fd, semfd, x;
int bad = 0;
char semname[32];
int result;
/* This test may also blow up if FS synchronization is substandard */
report_begin("siblings wait for each other");
report_hassubs();
snprintf(semname, sizeof(semname), "sem:badcall.%d", (int)getpid());
semfd = open(semname, O_WRONLY|O_CREAT|O_TRUNC, 0664);
if (semfd < 0) {
report_warn("can't make semaphore");
report_aborted(&result);
return result;
}
fd = open_testfile(NULL);
if (fd<0) {
report_aborted(&result);
close(semfd);
remove(semname);
return result;
}
pids[0] = fork();
if (pids[0]<0) {
report_warn("can't fork");
report_aborted(&result);
close(fd);
close(semfd);
remove(semname);
return result;
}
if (pids[0]==0) {
close(fd);
close(semfd);
wait_siblings_child(semname);
_exit(0);
}
pids[1] = fork();
if (pids[1]<0) {
report_warn("can't fork");
report_aborted(&result);
/* abandon the other child process :( */
close(fd);
close(semfd);
remove(semname);
return result;
}
if (pids[1]==0) {
close(fd);
close(semfd);
wait_siblings_child(semname);
_exit(0);
}
rv = write(fd, pids, sizeof(pids));
if (rv < 0) {
report_warn("write error on %s", TESTFILE);
report_aborted(&result);
/* abandon child procs :( */
close(fd);
close(semfd);
remove(semname);
return result;
}
if (rv != (int)sizeof(pids)) {
report_warnx("write error on %s: short count", TESTFILE);
report_aborted(&result);
/* abandon child procs :( */
close(fd);
close(semfd);
remove(semname);
return result;
}
/* gate the child procs */
rv = write(semfd, " ", 2);
if (rv < 0) {
report_warn("%s: write", semname);
bad = 1;
}
report_beginsub("overall");
rv = waitpid(pids[0], &x, 0);
if (rv<0) {
report_warn("error waiting for child 0 (pid %d)", pids[0]);
bad = 1;
}
rv = waitpid(pids[1], &x, 0);
if (rv<0) {
report_warn("error waiting for child 1 (pid %d)", pids[1]);
bad = 1;
}
if (bad) {
/* XXX: aborted, or failure, or what? */
report_aborted(&result);
}
else {
report_passed(&result);
}
close(fd);
close(semfd);
remove(semname);
remove(TESTFILE);
return result;
}