summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/nolibc/nolibc-test.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/testing/selftests/nolibc/nolibc-test.c')
-rw-r--r--tools/testing/selftests/nolibc/nolibc-test.c331
1 files changed, 287 insertions, 44 deletions
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 5884a891c491..dbe13000fb1a 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -9,24 +9,22 @@
* $(CC) -nostdlib -I/path/to/nolibc/sysroot => _NOLIBC_* guards are present
* $(CC) with default libc => NOLIBC* never defined
*/
-#ifndef NOLIBC
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#ifndef _NOLIBC_STDIO_H
-/* standard libcs need more includes */
#include <sys/auxv.h>
-#include <sys/io.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
+#include <sys/random.h>
#include <sys/reboot.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/time.h>
+#include <sys/timerfd.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <dirent.h>
@@ -38,10 +36,10 @@
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
+#include <time.h>
#include <unistd.h>
#include <limits.h>
-#endif
-#endif
+#include <ctype.h>
#pragma GCC diagnostic ignored "-Wmissing-prototypes"
@@ -807,6 +805,26 @@ static int test_dirent(void)
return 0;
}
+int test_getrandom(void)
+{
+ uint64_t rng = 0;
+ ssize_t ret;
+
+ ret = getrandom(&rng, sizeof(rng), GRND_NONBLOCK);
+ if (ret == -1 && errno == EAGAIN)
+ return 0; /* No entropy available yet */
+
+ if (ret != sizeof(rng))
+ return ret;
+
+ if (!rng) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ return 0;
+}
+
int test_getpagesize(void)
{
int x = getpagesize();
@@ -836,6 +854,29 @@ int test_getpagesize(void)
return !c;
}
+int test_file_stream(void)
+{
+ FILE *f;
+ int r;
+
+ f = fopen("/dev/null", "r");
+ if (!f)
+ return -1;
+
+ errno = 0;
+ r = fwrite("foo", 1, 3, f);
+ if (r != 0 || errno != EBADF) {
+ fclose(f);
+ return -1;
+ }
+
+ r = fclose(f);
+ if (r == EOF)
+ return -1;
+
+ return 0;
+}
+
int test_fork(void)
{
int status;
@@ -883,6 +924,102 @@ int test_stat_timestamps(void)
return 0;
}
+int test_timer(void)
+{
+ struct itimerspec timerspec;
+ struct sigevent evp;
+ timer_t timer;
+ int ret;
+
+ evp.sigev_notify = SIGEV_NONE;
+
+ ret = timer_create(CLOCK_MONOTONIC, &evp, &timer);
+ if (ret)
+ return ret;
+
+ timerspec = (struct itimerspec) {
+ .it_value.tv_sec = 1000000,
+ };
+ ret = timer_settime(timer, 0, &timerspec, NULL);
+ if (ret)
+ goto err;
+
+ timerspec = (struct itimerspec) {
+ .it_value.tv_sec = -1,
+ .it_value.tv_nsec = -1,
+ .it_interval.tv_sec = -1,
+ .it_interval.tv_nsec = -1,
+ };
+ ret = timer_gettime(timer, &timerspec);
+ if (ret)
+ goto err;
+
+ errno = EINVAL;
+ ret = -1;
+
+ if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
+ goto err;
+
+ if (timerspec.it_value.tv_sec > 1000000)
+ goto err;
+
+ ret = timer_delete(timer);
+ if (ret)
+ return ret;
+
+ return 0;
+
+err:
+ timer_delete(timer);
+ return ret;
+}
+
+int test_timerfd(void)
+{
+ struct itimerspec timerspec;
+ int timer, ret;
+
+ timer = timerfd_create(CLOCK_MONOTONIC, 0);
+ if (timer == -1)
+ return -1;
+
+ timerspec = (struct itimerspec) {
+ .it_value.tv_sec = 1000000,
+ };
+ ret = timerfd_settime(timer, 0, &timerspec, NULL);
+ if (ret)
+ goto err;
+
+ timerspec = (struct itimerspec) {
+ .it_value.tv_sec = -1,
+ .it_value.tv_nsec = -1,
+ .it_interval.tv_sec = -1,
+ .it_interval.tv_nsec = -1,
+ };
+ ret = timerfd_gettime(timer, &timerspec);
+ if (ret)
+ goto err;
+
+ errno = EINVAL;
+ ret = -1;
+
+ if (timerspec.it_interval.tv_sec || timerspec.it_interval.tv_nsec)
+ goto err;
+
+ if (timerspec.it_value.tv_sec > 1000000)
+ goto err;
+
+ ret = close(timer);
+ if (ret)
+ return ret;
+
+ return 0;
+
+err:
+ close(timer);
+ return ret;
+}
+
int test_uname(void)
{
struct utsname buf;
@@ -926,7 +1063,7 @@ int test_mmap_munmap(void)
{
int ret, fd, i, page_size;
void *mem;
- size_t file_size, length;
+ size_t file_size, length, mem_length;
off_t offset, pa_offset;
struct stat stat_buf;
const char * const files[] = {
@@ -966,14 +1103,22 @@ int test_mmap_munmap(void)
offset = 0;
length = file_size - offset;
pa_offset = offset & ~(page_size - 1);
+ mem_length = length + offset - pa_offset;
- mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
+ mem = mmap(NULL, mem_length, PROT_READ, MAP_SHARED, fd, pa_offset);
if (mem == MAP_FAILED) {
ret = 1;
goto end;
}
- ret = munmap(mem, length + offset - pa_offset);
+ mem = mremap(mem, mem_length, mem_length * 2, MREMAP_MAYMOVE, 0);
+ if (mem == MAP_FAILED) {
+ munmap(mem, mem_length);
+ ret = 1;
+ goto end;
+ }
+
+ ret = munmap(mem, mem_length * 2);
end:
close(fd);
@@ -1045,6 +1190,72 @@ int test_openat(void)
return 0;
}
+int test_namespace(void)
+{
+ int original_ns, new_ns, ret;
+ ino_t original_ns_ino;
+ struct stat stat_buf;
+
+ original_ns = open("/proc/self/ns/uts", O_RDONLY);
+ if (original_ns == -1)
+ return -1;
+
+ ret = fstat(original_ns, &stat_buf);
+ if (ret)
+ goto out;
+
+ original_ns_ino = stat_buf.st_ino;
+
+ ret = unshare(CLONE_NEWUTS);
+ if (ret)
+ goto out;
+
+ new_ns = open("/proc/self/ns/uts", O_RDONLY);
+ if (new_ns == -1) {
+ ret = new_ns;
+ goto out;
+ }
+
+ ret = fstat(new_ns, &stat_buf);
+ close(new_ns);
+ if (ret)
+ goto out;
+
+ if (stat_buf.st_ino == original_ns_ino) {
+ errno = EINVAL;
+ ret = -1;
+ goto out;
+ }
+
+ ret = setns(original_ns, CLONE_NEWUTS);
+ if (ret)
+ goto out;
+
+ new_ns = open("/proc/self/ns/uts", O_RDONLY);
+ if (new_ns == -1) {
+ ret = new_ns;
+ goto out;
+ }
+
+ ret = fstat(new_ns, &stat_buf);
+ if (ret)
+ goto out;
+
+ close(new_ns);
+
+ if (stat_buf.st_ino != original_ns_ino) {
+ errno = EINVAL;
+ ret = -1;
+ goto out;
+ }
+
+ ret = 0;
+
+out:
+ close(original_ns);
+ return ret;
+}
+
/* Run syscall tests between IDs <min> and <max>.
* Return 0 on success, non-zero on failure.
*/
@@ -1052,6 +1263,7 @@ int run_syscall(int min, int max)
{
struct timeval tv;
struct timezone tz;
+ struct timespec ts;
struct stat stat_buf;
int euid0;
int proc;
@@ -1083,6 +1295,11 @@ int run_syscall(int min, int max)
* test numbers.
*/
switch (test + __LINE__ + 1) {
+ CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break;
+ CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break;
+ CASE_TEST(clock_getres); EXPECT_SYSZR(1, clock_getres(CLOCK_MONOTONIC, &ts)); break;
+ CASE_TEST(clock_gettime); EXPECT_SYSZR(1, clock_gettime(CLOCK_MONOTONIC, &ts)); break;
+ CASE_TEST(clock_settime); EXPECT_SYSER(1, clock_settime(CLOCK_MONOTONIC, &ts), -1, EINVAL); break;
CASE_TEST(getpid); EXPECT_SYSNE(1, getpid(), -1); break;
CASE_TEST(getppid); EXPECT_SYSNE(1, getppid(), -1); break;
CASE_TEST(gettid); EXPECT_SYSNE(has_gettid, gettid(), -1); break;
@@ -1112,10 +1329,12 @@ int run_syscall(int min, int max)
CASE_TEST(dup3_0); tmp = dup3(0, 100, 0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
CASE_TEST(dup3_m1); tmp = dup3(-1, 100, 0); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0] = "/", [1] = NULL }, NULL), -1, EACCES); break;
+ CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break;
CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break;
CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1); break;
CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null"), -1, ENOTDIR); break;
CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break;
+ CASE_TEST(getrandom); EXPECT_SYSZR(1, test_getrandom()); break;
CASE_TEST(gettimeofday_tv); EXPECT_SYSZR(1, gettimeofday(&tv, NULL)); break;
CASE_TEST(gettimeofday_tv_tz);EXPECT_SYSZR(1, gettimeofday(&tv, &tz)); break;
CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
@@ -1149,6 +1368,8 @@ int run_syscall(int min, int max)
CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break;
CASE_TEST(stat_timestamps); EXPECT_SYSZR(1, test_stat_timestamps()); break;
CASE_TEST(symlink_root); EXPECT_SYSER(1, symlink("/", "/"), -1, EEXIST); break;
+ CASE_TEST(timer); EXPECT_SYSZR(1, test_timer()); break;
+ CASE_TEST(timerfd); EXPECT_SYSZR(1, test_timerfd()); break;
CASE_TEST(uname); EXPECT_SYSZR(proc, test_uname()); break;
CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); break;
CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
@@ -1160,6 +1381,7 @@ int run_syscall(int min, int max)
CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break;
CASE_TEST(syscall_noargs); EXPECT_SYSEQ(1, syscall(__NR_getpid), getpid()); break;
CASE_TEST(syscall_args); EXPECT_SYSER(1, syscall(__NR_statx, 0, NULL, 0, 0, NULL), -1, EFAULT); break;
+ CASE_TEST(namespace); EXPECT_SYSZR(euid0 && proc, test_namespace()); break;
case __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
@@ -1168,6 +1390,17 @@ int run_syscall(int min, int max)
return ret;
}
+int test_difftime(void)
+{
+ if (difftime(200., 100.) != 100.)
+ return 1;
+
+ if (difftime(100., 200.) != -100.)
+ return 1;
+
+ return 0;
+}
+
int run_stdlib(int min, int max)
{
int test;
@@ -1211,6 +1444,9 @@ int run_stdlib(int min, int max)
CASE_TEST(strlcpy_2); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 2), buf, 3, "b"); break;
CASE_TEST(strlcpy_3); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 3), buf, 3, "ba"); break;
CASE_TEST(strlcpy_4); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 4), buf, 3, "bar"); break;
+ CASE_TEST(strstr_foobar_foo); EXPECT_STREQ(1, strstr("foobar", "foo"), "foobar"); break;
+ CASE_TEST(strstr_foobar_bar); EXPECT_STREQ(1, strstr("foobar", "bar"), "bar"); break;
+ CASE_TEST(strstr_foobar_baz); EXPECT_PTREQ(1, strstr("foobar", "baz"), NULL); break;
CASE_TEST(memcmp_20_20); EXPECT_EQ(1, memcmp("aaa\x20", "aaa\x20", 4), 0); break;
CASE_TEST(memcmp_20_60); EXPECT_LT(1, memcmp("aaa\x20", "aaa\x60", 4), 0); break;
CASE_TEST(memcmp_60_20); EXPECT_GT(1, memcmp("aaa\x60", "aaa\x20", 4), 0); break;
@@ -1281,6 +1517,13 @@ int run_stdlib(int min, int max)
CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
+ CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break;
+ CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break;
+ CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break;
+ CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break;
+ CASE_TEST(abs); EXPECT_EQ(1, abs(-10), 10); break;
+ CASE_TEST(abs_noop); EXPECT_EQ(1, abs(10), 10); break;
+ CASE_TEST(difftime); EXPECT_ZR(1, test_difftime()); break;
case __LINE__:
return ret; /* must be last */
@@ -1295,27 +1538,15 @@ int run_stdlib(int min, int max)
static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
{
- int ret, pipefd[2];
- ssize_t w, r;
char buf[100];
- FILE *memfile;
va_list args;
+ ssize_t w;
+ int ret;
- ret = pipe(pipefd);
- if (ret == -1) {
- llen += printf(" pipe() != %s", strerror(errno));
- result(llen, FAIL);
- return 1;
- }
-
- memfile = fdopen(pipefd[1], "w");
- if (!memfile) {
- result(llen, FAIL);
- return 1;
- }
va_start(args, fmt);
- w = vfprintf(memfile, fmt, args);
+ /* Only allow writing 21 bytes, to test truncation */
+ w = vsnprintf(buf, 21, fmt, args);
va_end(args);
if (w != c) {
@@ -1324,17 +1555,6 @@ static int expect_vfprintf(int llen, int c, const char *expected, const char *fm
return 1;
}
- fclose(memfile);
-
- r = read(pipefd[0], buf, sizeof(buf) - 1);
-
- if (r != w) {
- llen += printf(" written(%d) != read(%d)", (int)w, (int)r);
- result(llen, FAIL);
- return 1;
- }
-
- buf[r] = '\0';
llen += printf(" \"%s\" = \"%s\"", expected, buf);
ret = strncmp(expected, buf, c);
@@ -1409,7 +1629,24 @@ static int test_scanf(void)
return 0;
}
-static int run_vfprintf(int min, int max)
+int test_strerror(void)
+{
+ char buf[100];
+ ssize_t ret;
+
+ memset(buf, 'A', sizeof(buf));
+
+ errno = EINVAL;
+ ret = snprintf(buf, sizeof(buf), "%m");
+ if (is_nolibc) {
+ if (ret < 6 || memcmp(buf, "errno=", 6))
+ return 1;
+ }
+
+ return 0;
+}
+
+static int run_printf(int min, int max)
{
int test;
int ret = 0;
@@ -1430,7 +1667,14 @@ static int run_vfprintf(int min, int max)
CASE_TEST(char); EXPECT_VFPRINTF(1, "c", "%c", 'c'); break;
CASE_TEST(hex); EXPECT_VFPRINTF(1, "f", "%x", 0xf); break;
CASE_TEST(pointer); EXPECT_VFPRINTF(3, "0x1", "%p", (void *) 0x1); break;
+ CASE_TEST(uintmax_t); EXPECT_VFPRINTF(20, "18446744073709551615", "%ju", 0xffffffffffffffffULL); break;
+ CASE_TEST(intmax_t); EXPECT_VFPRINTF(20, "-9223372036854775807", "%jd", 0x8000000000000001LL); break;
+ CASE_TEST(truncation); EXPECT_VFPRINTF(25, "01234567890123456789", "%s", "0123456789012345678901234"); break;
+ CASE_TEST(string_width); EXPECT_VFPRINTF(10, " 1", "%10s", "1"); break;
+ CASE_TEST(number_width); EXPECT_VFPRINTF(10, " 1", "%10d", 1); break;
+ CASE_TEST(width_trunc); EXPECT_VFPRINTF(25, " ", "%25d", 1); break;
CASE_TEST(scanf); EXPECT_ZR(1, test_scanf()); break;
+ CASE_TEST(strerror); EXPECT_ZR(1, test_strerror()); break;
case __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
@@ -1439,6 +1683,7 @@ static int run_vfprintf(int min, int max)
return ret;
}
+__attribute__((no_sanitize("undefined")))
static int smash_stack(void)
{
char buf[100];
@@ -1455,8 +1700,7 @@ static int run_protection(int min __attribute__((unused)),
int max __attribute__((unused)))
{
pid_t pid;
- int llen = 0, ret;
- siginfo_t siginfo = {};
+ int llen = 0, status;
struct rlimit rlimit = { 0, 0 };
llen += printf("0 -fstackprotector ");
@@ -1494,11 +1738,10 @@ static int run_protection(int min __attribute__((unused)),
return 1;
default:
- ret = waitid(P_PID, pid, &siginfo, WEXITED);
+ pid = waitpid(pid, &status, 0);
- if (ret != 0 || siginfo.si_signo != SIGCHLD ||
- siginfo.si_code != CLD_KILLED || siginfo.si_status != SIGABRT) {
- llen += printf("waitid()");
+ if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
+ llen += printf("waitpid()");
result(llen, FAIL);
return 1;
}
@@ -1570,7 +1813,7 @@ static const struct test test_names[] = {
{ .name = "startup", .func = run_startup },
{ .name = "syscall", .func = run_syscall },
{ .name = "stdlib", .func = run_stdlib },
- { .name = "vfprintf", .func = run_vfprintf },
+ { .name = "printf", .func = run_printf },
{ .name = "protection", .func = run_protection },
{ 0 }
};
generated by cgit (git 2.34.1) at 2025-05-29 09:27:58 +0000