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zdtm: use a current stack for preccesses created by clone()

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Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin 2013-05-21 19:05:38 +04:00 committed by Pavel Emelyanov
parent 9a726d4f9e
commit 084a630dfd
1 changed files with 4 additions and 10 deletions
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14
test/zdtm/lib/test.c
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@ -204,9 +204,11 @@ void test_init(int argc, char **argv)
srand48(time(NULL)); /* just in case we need it */ srand48(time(NULL)); /* just in case we need it */
} }
#define STACK_SIZE (8 * 4096) #define STACK_SIZE 4096
struct zdtm_clone_arg { struct zdtm_clone_arg {
char stack[STACK_SIZE];
char stack_ptr[0];
FILE *pidf; FILE *pidf;
int argc; int argc;
char **argv; char **argv;
@ -256,7 +258,6 @@ void test_init_ns(int argc, char **argv, unsigned long clone_flags,
.sa_flags = SA_RESTART, .sa_flags = SA_RESTART,
}; };
struct zdtm_clone_arg ca; struct zdtm_clone_arg ca;
void *stack;
sigemptyset(&sa.sa_mask); sigemptyset(&sa.sa_mask);
@ -283,18 +284,11 @@ void test_init_ns(int argc, char **argv, unsigned long clone_flags,
exit(1); exit(1);
} }
stack = mmap(NULL, STACK_SIZE, PROT_WRITE | PROT_READ,
MAP_PRIVATE | MAP_GROWSDOWN | MAP_ANONYMOUS, -1, 0);
if (stack == MAP_FAILED) {
err("Can't map stack\n");
exit(1);
}
ca.pidf = pidf; ca.pidf = pidf;
ca.fn = fn; ca.fn = fn;
ca.argc = argc; ca.argc = argc;
ca.argv = argv; ca.argv = argv;
pid = clone(do_test_fn, stack + STACK_SIZE, clone_flags | SIGCHLD, &ca); pid = clone(do_test_fn, ca.stack_ptr, clone_flags | SIGCHLD, &ca);
if (pid < 0) { if (pid < 0) {
err("Daemonizing failed: %m\n"); err("Daemonizing failed: %m\n");
exit(1); exit(1);