static void child_alloc(int *bufsz_arr)
{
char **foo;
int i, j;
char buf[BUFSIZ];
long count;
foo = SAFE_MALLOC(tst_exit, nr_iovecs * sizeof(char *));
count = 0;
for (i = 0; i < nr_iovecs; i++) {
foo[i] = SAFE_MALLOC(tst_exit, bufsz_arr[i]);
for (j = 0; j < bufsz_arr[i]; j++) {
foo[i][j] = count % 256;
count++;
}
}
tst_resm(TINFO, "child 0: %d iovecs allocated and initialized.",
nr_iovecs);
/* passing addr via pipe */
SAFE_CLOSE(tst_exit, pipe_fd[0]);
snprintf(buf, BUFSIZ, "%p", (void *)foo);
SAFE_WRITE(tst_exit, 1, pipe_fd[1], buf, strlen(buf));
SAFE_CLOSE(tst_exit, pipe_fd[1]);
/* wait until child_invoke is done reading from our VM */
safe_semop(semid, 0, -1);
}
int main(int argc, char **argv)
{
int lc, status;
int *bufsz_arr;
tst_parse_opts(argc, argv, options, &help);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
if (pipe(pipe_fd) < 0)
tst_brkm(TBROK | TERRNO, cleanup, "pipe");
bufsz_arr = SAFE_MALLOC(cleanup, nr_iovecs * sizeof(int));
gen_random_arr(bufsz_arr, nr_iovecs);
/* the start of child_alloc and child_invoke is already
* synchronized via pipe */
pids[0] = fork();
switch (pids[0]) {
case -1:
tst_brkm(TBROK | TERRNO, cleanup, "fork #0");
case 0:
child_alloc(bufsz_arr);
exit(0);
}
pids[1] = fork();
switch (pids[1]) {
case -1:
tst_brkm(TBROK | TERRNO, cleanup, "fork #1");
case 0:
child_invoke(bufsz_arr);
exit(0);
}
/* wait until child_invoke reads from child_alloc's VM */
if (waitpid(pids[1], &status, 0) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "waitpid");
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
tst_resm(TFAIL, "child 1 returns %d", status);
/* child_alloc is free to exit now */
safe_semop(semid, 0, 1);
if (waitpid(pids[0], &status, 0) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "waitpid");
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
tst_resm(TFAIL, "child 0 returns %d", status);
free(bufsz_arr);
}
cleanup();
tst_exit();
}
int main(int argc, char **argv)
{
int lc, status;
char *msg;
msg = parse_opts(argc, argv, NULL, NULL);
if (msg != NULL)
tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
len = strlen(tst_string);
if (pipe(pipe_fd) < 0)
tst_brkm(TBROK | TERRNO, cleanup, "pipe");
/* the start of child_alloc and child_invoke is already
* synchronized via pipe */
pids[0] = fork();
switch (pids[0]) {
case -1:
tst_brkm(TBROK | TERRNO, cleanup, "fork #0");
case 0:
child_alloc();
exit(0);
}
pids[1] = fork();
switch (pids[1]) {
case -1:
tst_brkm(TBROK | TERRNO, cleanup, "fork #1");
case 0:
child_invoke();
exit(0);
}
/* wait until child_invoke reads from child_alloc's VM */
if (waitpid(pids[1], &status, 0) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "waitpid");
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
tst_resm(TFAIL, "child 1 returns %d", status);
/* child_alloc is free to exit now */
safe_semop(semid, 0, 1);
if (waitpid(pids[0], &status, 0) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "waitpid");
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
tst_resm(TFAIL, "child 0 returns %d", status);
}
cleanup();
tst_exit();
}
static void child_alloc(void)
{
char *foo;
char buf[BUFSIZ];
foo = SAFE_MALLOC(tst_exit, len + 1);
strncpy(foo, tst_string, len);
foo[len] = '\0';
tst_resm(TINFO, "child 0: memory allocated and initialized.");
/* passing addr of string "foo" via pipe */
SAFE_CLOSE(tst_exit, pipe_fd[0]);
snprintf(buf, BUFSIZ, "%p", foo);
SAFE_WRITE(tst_exit, 1, pipe_fd[1], buf, strlen(buf));
SAFE_CLOSE(tst_exit, pipe_fd[1]);
/* wait until child_invoke is done reading from our VM */
safe_semop(semid, 0, -1);
}
