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-rw-r--r--tools/testing/selftests/nolibc/nolibc-test.c231
1 files changed, 194 insertions, 37 deletions
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 21bacc928bf7..486334981e60 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1,10 +1,7 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
#define _GNU_SOURCE
-/* platform-specific include files coming from the compiler */
-#include <limits.h>
-
/* libc-specific include files
* The program may be built in 3 ways:
* $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
@@ -20,7 +17,9 @@
#include <linux/reboot.h>
#include <sys/io.h>
#include <sys/ioctl.h>
+#include <sys/mman.h>
#include <sys/mount.h>
+#include <sys/prctl.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/syscall.h>
@@ -34,7 +33,10 @@
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
#include <unistd.h>
+#include <limits.h>
#endif
#endif
@@ -43,8 +45,8 @@ char **environ;
/* definition of a series of tests */
struct test {
- const char *name; // test name
- int (*func)(int min, int max); // handler
+ const char *name; /* test name */
+ int (*func)(int min, int max); /* handler */
};
#ifndef _NOLIBC_STDLIB_H
@@ -103,24 +105,32 @@ const char *errorname(int err)
CASE_ERR(EDOM);
CASE_ERR(ERANGE);
CASE_ERR(ENOSYS);
+ CASE_ERR(EOVERFLOW);
default:
return itoa(err);
}
}
+static void putcharn(char c, size_t n)
+{
+ char buf[64];
+
+ memset(buf, c, n);
+ buf[n] = '\0';
+ fputs(buf, stdout);
+}
+
static int pad_spc(int llen, int cnt, const char *fmt, ...)
{
va_list args;
- int len;
int ret;
- for (len = 0; len < cnt - llen; len++)
- putchar(' ');
+ putcharn(' ', cnt - llen);
va_start(args, fmt);
ret = vfprintf(stdout, fmt, args);
va_end(args);
- return ret < 0 ? ret : ret + len;
+ return ret < 0 ? ret : ret + cnt - llen;
}
/* The tests below are intended to be used by the macroes, which evaluate
@@ -162,7 +172,7 @@ static int expect_eq(uint64_t expr, int llen, uint64_t val)
{
int ret = !(expr == val);
- llen += printf(" = %lld ", expr);
+ llen += printf(" = %lld ", (long long)expr);
pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
return ret;
}
@@ -290,18 +300,24 @@ static int expect_sysne(int expr, int llen, int val)
}
+#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
+ do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
+
#define EXPECT_SYSER(cond, expr, expret, experr) \
- do { if (!cond) pad_spc(llen, 64, "[SKIPPED]\n"); else ret += expect_syserr(expr, expret, experr, llen); } while (0)
+ EXPECT_SYSER2(cond, expr, expret, experr, 0)
-static int expect_syserr(int expr, int expret, int experr, int llen)
+static int expect_syserr2(int expr, int expret, int experr1, int experr2, int llen)
{
int ret = 0;
int _errno = errno;
llen += printf(" = %d %s ", expr, errorname(_errno));
- if (expr != expret || _errno != experr) {
+ if (expr != expret || (_errno != experr1 && _errno != experr2)) {
ret = 1;
- llen += printf(" != (%d %s) ", expret, errorname(experr));
+ if (experr2 == 0)
+ llen += printf(" != (%d %s) ", expret, errorname(experr1));
+ else
+ llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
llen += pad_spc(llen, 64, "[FAIL]\n");
} else {
llen += pad_spc(llen, 64, " [OK]\n");
@@ -471,11 +487,60 @@ static int test_getpagesize(void)
return !c;
}
+static int test_fork(void)
+{
+ int status;
+ pid_t pid;
+
+ /* flush the printf buffer to avoid child flush it */
+ fflush(stdout);
+ fflush(stderr);
+
+ pid = fork();
+
+ switch (pid) {
+ case -1:
+ return 1;
+
+ case 0:
+ exit(123);
+
+ default:
+ pid = waitpid(pid, &status, 0);
+
+ return pid == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 123;
+ }
+}
+
+static int test_stat_timestamps(void)
+{
+ struct stat st;
+
+ if (sizeof(st.st_atim.tv_sec) != sizeof(st.st_atime))
+ return 1;
+
+ if (stat("/proc/self/", &st))
+ return 1;
+
+ if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000)
+ return 1;
+
+ if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000)
+ return 1;
+
+ if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000)
+ return 1;
+
+ return 0;
+}
+
/* Run syscall tests between IDs <min> and <max>.
* Return 0 on success, non-zero on failure.
*/
int run_syscall(int min, int max)
{
+ struct timeval tv;
+ struct timezone tz;
struct stat stat_buf;
int euid0;
int proc;
@@ -491,7 +556,7 @@ int run_syscall(int min, int max)
euid0 = geteuid() == 0;
for (test = min; test >= 0 && test <= max; test++) {
- int llen = 0; // line length
+ int llen = 0; /* line length */
/* avoid leaving empty lines below, this will insert holes into
* test numbers.
@@ -527,14 +592,11 @@ 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(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(gettimeofday_null); EXPECT_SYSZR(1, gettimeofday(NULL, NULL)); break;
-#ifdef NOLIBC
- CASE_TEST(gettimeofday_bad1); EXPECT_SYSER(1, gettimeofday((void *)1, NULL), -1, EFAULT); break;
- CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
- CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
-#endif
+ 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;
CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
@@ -550,6 +612,7 @@ int run_syscall(int min, int max)
CASE_TEST(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;
CASE_TEST(poll_stdout); EXPECT_SYSNE(1, ({ struct pollfd fds = { 1, POLLOUT, 0}; poll(&fds, 1, 0); }), -1); break;
CASE_TEST(poll_fault); EXPECT_SYSER(1, poll((void *)1, 1, 0), -1, EFAULT); break;
+ CASE_TEST(prctl); EXPECT_SYSER(1, prctl(PR_SET_NAME, (unsigned long)NULL, 0, 0, 0), -1, EFAULT); break;
CASE_TEST(read_badf); EXPECT_SYSER(1, read(-1, &tmp, 1), -1, EBADF); break;
CASE_TEST(sched_yield); EXPECT_SYSZR(1, sched_yield()); break;
CASE_TEST(select_null); EXPECT_SYSZR(1, ({ struct timeval tv = { 0 }; select(0, NULL, NULL, NULL, &tv); })); break;
@@ -557,6 +620,7 @@ int run_syscall(int min, int max)
CASE_TEST(select_fault); EXPECT_SYSER(1, select(1, (void *)1, NULL, NULL, 0), -1, EFAULT); break;
CASE_TEST(stat_blah); EXPECT_SYSER(1, stat("/proc/self/blah", &stat_buf), -1, ENOENT); break;
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(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); break;
CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
@@ -565,6 +629,8 @@ int run_syscall(int min, int max)
CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break;
CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break;
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 __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
@@ -581,7 +647,7 @@ int run_stdlib(int min, int max)
void *p1, *p2;
for (test = min; test >= 0 && test <= max; test++) {
- int llen = 0; // line length
+ int llen = 0; /* line length */
/* avoid leaving empty lines below, this will insert holes into
* test numbers.
@@ -639,9 +705,9 @@ int run_stdlib(int min, int max)
CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) INTPTR_MIN); break;
CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) INTPTR_MAX); break;
CASE_TEST(limit_uint_fast32_max); EXPECT_EQ(1, UINT_FAST32_MAX, (uint_fast32_t) UINTPTR_MAX); break;
- CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INTPTR_MIN); break;
- CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INTPTR_MAX); break;
- CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINTPTR_MAX); break;
+ CASE_TEST(limit_int_fast64_min); EXPECT_EQ(1, INT_FAST64_MIN, (int_fast64_t) INT64_MIN); break;
+ CASE_TEST(limit_int_fast64_max); EXPECT_EQ(1, INT_FAST64_MAX, (int_fast64_t) INT64_MAX); break;
+ CASE_TEST(limit_uint_fast64_max); EXPECT_EQ(1, UINT_FAST64_MAX, (uint_fast64_t) UINT64_MAX); break;
#if __SIZEOF_LONG__ == 8
CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break;
CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break;
@@ -667,17 +733,98 @@ int run_stdlib(int min, int max)
return ret;
}
-#if defined(__clang__)
-__attribute__((optnone))
-#elif defined(__GNUC__)
-__attribute__((optimize("O0")))
-#endif
+#define EXPECT_VFPRINTF(c, expected, fmt, ...) \
+ ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
+
+static int expect_vfprintf(int llen, size_t c, const char *expected, const char *fmt, ...)
+{
+ int ret, fd, w, r;
+ char buf[100];
+ FILE *memfile;
+ va_list args;
+
+ fd = memfd_create("vfprintf", 0);
+ if (fd == -1) {
+ pad_spc(llen, 64, "[FAIL]\n");
+ return 1;
+ }
+
+ memfile = fdopen(fd, "w+");
+ if (!memfile) {
+ pad_spc(llen, 64, "[FAIL]\n");
+ return 1;
+ }
+
+ va_start(args, fmt);
+ w = vfprintf(memfile, fmt, args);
+ va_end(args);
+
+ if (w != c) {
+ llen += printf(" written(%d) != %d", w, (int) c);
+ pad_spc(llen, 64, "[FAIL]\n");
+ return 1;
+ }
+
+ fflush(memfile);
+ lseek(fd, 0, SEEK_SET);
+
+ r = read(fd, buf, sizeof(buf) - 1);
+ buf[r] = '\0';
+
+ fclose(memfile);
+
+ if (r != w) {
+ llen += printf(" written(%d) != read(%d)", w, r);
+ pad_spc(llen, 64, "[FAIL]\n");
+ return 1;
+ }
+
+ llen += printf(" \"%s\" = \"%s\"", expected, buf);
+ ret = strncmp(expected, buf, c);
+
+ pad_spc(llen, 64, ret ? "[FAIL]\n" : " [OK]\n");
+ return ret;
+}
+
+static int run_vfprintf(int min, int max)
+{
+ int test;
+ int tmp;
+ int ret = 0;
+ void *p1, *p2;
+
+ for (test = min; test >= 0 && test <= max; test++) {
+ int llen = 0; /* line length */
+
+ /* avoid leaving empty lines below, this will insert holes into
+ * test numbers.
+ */
+ switch (test + __LINE__ + 1) {
+ CASE_TEST(empty); EXPECT_VFPRINTF(0, "", ""); break;
+ CASE_TEST(simple); EXPECT_VFPRINTF(3, "foo", "foo"); break;
+ CASE_TEST(string); EXPECT_VFPRINTF(3, "foo", "%s", "foo"); break;
+ CASE_TEST(number); EXPECT_VFPRINTF(4, "1234", "%d", 1234); break;
+ CASE_TEST(negnumber); EXPECT_VFPRINTF(5, "-1234", "%d", -1234); break;
+ CASE_TEST(unsigned); EXPECT_VFPRINTF(5, "12345", "%u", 12345); break;
+ 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 __LINE__:
+ return ret; /* must be last */
+ /* note: do not set any defaults so as to permit holes above */
+ }
+ }
+ return ret;
+}
+
static int smash_stack(void)
{
char buf[100];
+ volatile char *ptr = buf;
+ size_t i;
- for (size_t i = 0; i < 200; i++)
- buf[i] = 'P';
+ for (i = 0; i < 200; i++)
+ ptr[i] = 'P';
return 1;
}
@@ -689,12 +836,20 @@ static int run_protection(int min, int max)
llen += printf("0 -fstackprotector ");
-#if !defined(NOLIBC_STACKPROTECTOR)
+#if !defined(_NOLIBC_STACKPROTECTOR)
llen += printf("not supported");
pad_spc(llen, 64, "[SKIPPED]\n");
return 0;
#endif
+#if defined(_NOLIBC_STACKPROTECTOR)
+ if (!__stack_chk_guard) {
+ llen += printf("__stack_chk_guard not initialized");
+ pad_spc(llen, 64, "[FAIL]\n");
+ return 1;
+ }
+#endif
+
pid = -1;
pid = fork();
@@ -708,6 +863,7 @@ static int run_protection(int min, int max)
close(STDOUT_FILENO);
close(STDERR_FILENO);
+ prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
smash_stack();
return 1;
@@ -778,6 +934,7 @@ static const struct test test_names[] = {
/* add new tests here */
{ .name = "syscall", .func = run_syscall },
{ .name = "stdlib", .func = run_stdlib },
+ { .name = "vfprintf", .func = run_vfprintf },
{ .name = "protection", .func = run_protection },
{ 0 }
};
@@ -785,7 +942,7 @@ static const struct test test_names[] = {
int main(int argc, char **argv, char **envp)
{
int min = 0;
- int max = __INT_MAX__;
+ int max = INT_MAX;
int ret = 0;
int err;
int idx;
@@ -833,7 +990,7 @@ int main(int argc, char **argv, char **envp)
* here, which defaults to the full range.
*/
do {
- min = 0; max = __INT_MAX__;
+ min = 0; max = INT_MAX;
value = colon;
if (value && *value) {
colon = strchr(value, ':');
@@ -899,7 +1056,7 @@ int main(int argc, char **argv, char **envp)
#else
else if (ioperm(0x501, 1, 1) == 0)
#endif
- asm volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
+ __asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
/* if it does nothing, fall back to the regular panic */
#endif
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-28 15:03:11 +0300