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#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/prctl.h>
#include <sys/wait.h>
#include "testsuite.h"
static const char *progname;
static int oneshot = 0;
static const char options_short[] = "lhn";
static const struct option options[] = {
{ "list", no_argument, 0, 'l' },
{ "help", no_argument, 0, 'h' },
{ NULL, 0, 0, 0 }
};
struct _env_config {
const char *key;
const char *ldpreload;
} env_config[_TC_LAST] = {
[TC_UNAME_R] = { S_TC_UNAME_R, ABS_TOP_BUILDDIR "/testsuite/uname.so" },
[TC_ROOTFS] = { S_TC_ROOTFS, ABS_TOP_BUILDDIR "/testsuite/path.so" },
};
static void help(void)
{
const struct option *itr;
const char *itr_short;
printf("Usage:\n"
"\t%s [options] <test>\n"
"Options:\n", basename(progname));
for (itr = options, itr_short = options_short;
itr->name != NULL; itr++, itr_short++)
printf("\t-%c, --%s\n", *itr_short, itr->name);
}
static void test_list(const struct test *tests[])
{
size_t i;
printf("Available tests:\n");
for (i = 0; tests[i] != NULL; i++)
printf("\t%s, %s\n", tests[i]->name, tests[i]->description);
}
int test_init(int argc, char *const argv[], const struct test *tests[])
{
progname = argv[0];
for (;;) {
int c, idx = 0;
c = getopt_long(argc, argv, options_short, options, &idx);
if (c == -1)
break;
switch (c) {
case 'l':
test_list(tests);
return 0;
case 'h':
help();
return 0;
case 'n':
oneshot = 1;
break;
case '?':
return -1;
default:
ERR("unexpected getopt_long() value %c\n", c);
return -1;
}
}
return optind;
}
const struct test *test_find(const struct test *tests[], const char *name)
{
size_t i;
for (i = 0; tests[i] != NULL; i++) {
if (strcmp(tests[i]->name, name) == 0)
return tests[i];
}
return NULL;
}
static int test_spawn_test(const struct test *t)
{
const char *const args[] = { progname, "-n", t->name, NULL };
execv(progname, (char *const *) args);
ERR("failed to spawn %s for %s: %m\n", progname, t->name);
return EXIT_FAILURE;
}
static int test_run_spawned(const struct test *t)
{
int err = t->func(t);
exit(err);
return EXIT_FAILURE;
}
int test_spawn_prog(const char *prog, const char *args[])
{
execv(prog, (char *const *) args);
ERR("failed to spawn %s ", prog);
return EXIT_FAILURE;
}
static void test_export_environ(const struct test *t)
{
char *preload = NULL;
size_t preloadlen = 0;
size_t i;
unsetenv("LD_PRELOAD");
for (i = 0; i < _TC_LAST; i++) {
const char *ldpreload;
size_t ldpreloadlen;
char *tmp;
if (t->config[i] == NULL)
continue;
setenv(env_config[i].key, t->config[i], 1);
ldpreload = env_config[i].ldpreload;
ldpreloadlen = strlen(ldpreload);
tmp = realloc(preload, preloadlen + 2 + ldpreloadlen);
if (tmp == NULL) {
ERR("oom: test_export_environ()\n");
return;
}
preload = tmp;
if (preloadlen > 0)
preload[preloadlen++] = ' ';
memcpy(preload + preloadlen, ldpreload, ldpreloadlen);
preloadlen += ldpreloadlen;
preload[preloadlen] = '\0';
}
if (preload != NULL)
setenv("LD_PRELOAD", preload, 1);
free(preload);
}
static inline int test_run_child(const struct test *t)
{
/* kill child if parent dies */
prctl(PR_SET_PDEATHSIG, SIGTERM);
test_export_environ(t);
if (t->need_spawn)
return test_spawn_test(t);
else
return test_run_spawned(t);
}
static inline int test_run_parent(const struct test *t)
{
pid_t pid;
int err;
do {
pid = wait(&err);
if (pid == -1) {
ERR("error waitpid(): %m\n");
return EXIT_FAILURE;
}
} while (!WIFEXITED(err) && !WIFSIGNALED(err));
if (err != 0)
ERR("error while running %s\n", t->name);
LOG("%s: %s\n", err == 0 ? "PASSED" : "FAILED", t->name);
return err;
}
int test_run(const struct test *t)
{
pid_t pid;
if (t->need_spawn && oneshot)
test_run_spawned(t);
LOG("running %s, in forked context\n", t->name);
pid = fork();
if (pid < 0) {
ERR("could not fork(): %m\n");
LOG("FAILED: %s\n", t->name);
return EXIT_FAILURE;
}
if (pid > 0)
return test_run_parent(t);
return test_run_child(t);
}
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