/* SPDX-License-Identifier: GPL-2.0 */
#define _GNU_SOURCE
#define _LARGEFILE64_SOURCE
/* libc-specific include files
* The program may be built in 3 ways:
* $(CC) -nostdlib -include /path/to/nolibc.h => NOLIBC already defined
* $(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/reboot.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysmacros.h>
#include <sys/time.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <unistd.h>
#include <limits.h>
#endif
#endif
#include "nolibc-test-linkage.h"
/* for the type of int_fast16_t and int_fast32_t, musl differs from glibc and nolibc */
#define SINT_MAX_OF_TYPE(type) (((type)1 << (sizeof(type) * 8 - 2)) - (type)1 + ((type)1 << (sizeof(type) * 8 - 2)))
#define SINT_MIN_OF_TYPE(type) (-SINT_MAX_OF_TYPE(type) - 1)
/* will be used to test initialization of environ */
static char **test_envp;
/* will be used to test initialization of argv */
static char **test_argv;
/* will be used to test initialization of argc */
static int test_argc;
/* will be used by some test cases as readable file, please don't write it */
static const char *argv0;
/* will be used by constructor tests */
static int constructor_test_value;
static const int is_nolibc =
#ifdef NOLIBC
1
#else
0
#endif
;
/* definition of a series of tests */
struct test {
const char *name; /* test name */
int (*func)(int min, int max); /* handler */
};
#ifndef _NOLIBC_STDLIB_H
char *itoa(int i)
{
static char buf[12];
int ret;
ret = snprintf(buf, sizeof(buf), "%d", i);
return (ret >= 0 && ret < sizeof(buf)) ? buf : "#err";
}
#endif
#define CASE_ERR(err) \
case err: return #err
/* returns the error name (e.g. "ENOENT") for common errors, "SUCCESS" for 0,
* or the decimal value for less common ones.
*/
static const char *errorname(int err)
{
switch (err) {
case 0: return "SUCCESS";
CASE_ERR(EPERM);
CASE_ERR(ENOENT);
CASE_ERR(ESRCH);
CASE_ERR(EINTR);
CASE_ERR(EIO);
CASE_ERR(ENXIO);
CASE_ERR(E2BIG);
CASE_ERR(ENOEXEC);
CASE_ERR(EBADF);
CASE_ERR(ECHILD);
CASE_ERR(EAGAIN);
CASE_ERR(ENOMEM);
CASE_ERR(EACCES);
CASE_ERR(EFAULT);
CASE_ERR(ENOTBLK);
CASE_ERR(EBUSY);
CASE_ERR(EEXIST);
CASE_ERR(EXDEV);
CASE_ERR(ENODEV);
CASE_ERR(ENOTDIR);
CASE_ERR(EISDIR);
CASE_ERR(EINVAL);
CASE_ERR(ENFILE);
CASE_ERR(EMFILE);
CASE_ERR(ENOTTY);
CASE_ERR(ETXTBSY);
CASE_ERR(EFBIG);
CASE_ERR(ENOSPC);
CASE_ERR(ESPIPE);
CASE_ERR(EROFS);
CASE_ERR(EMLINK);
CASE_ERR(EPIPE);
CASE_ERR(EDOM);
CASE_ERR(ERANGE);
CASE_ERR(ENOSYS);
CASE_ERR(EOVERFLOW);
default:
return itoa(err);
}
}
static void align_result(size_t llen)
{
const size_t align = 64;
char buf[align];
size_t n;
if (llen >= align)
return;
n = align - llen;
memset(buf, ' ', n);
buf[n] = '\0';
fputs(buf, stdout);
}
enum RESULT {
OK,
FAIL,
SKIPPED,
};
static void result(int llen, enum RESULT r)
{
const char *msg;
if (r == OK)
msg = " [OK]";
else if (r == SKIPPED)
msg = "[SKIPPED]";
else
msg = " [FAIL]";
align_result(llen);
puts(msg);
}
/* The tests below are intended to be used by the macroes, which evaluate
* expression <expr>, print the status to stdout, and update the "ret"
* variable to count failures. The functions themselves return the number
* of failures, thus either 0 or 1.
*/
#define EXPECT_ZR(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_zr(expr, llen); } while (0)
static __attribute__((unused))
int expect_zr(int expr, int llen)
{
int ret = !(expr == 0);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_NZ(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_nz(expr, llen; } while (0)
static __attribute__((unused))
int expect_nz(int expr, int llen)
{
int ret = !(expr != 0);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_EQ(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_eq(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_eq(uint64_t expr, int llen, uint64_t val)
{
int ret = !(expr == val);
llen += printf(" = %lld ", (long long)expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_NE(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ne(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_ne(int expr, int llen, int val)
{
int ret = !(expr != val);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_GE(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ge(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_ge(int expr, int llen, int val)
{
int ret = !(expr >= val);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_GT(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_gt(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_gt(int expr, int llen, int val)
{
int ret = !(expr > val);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_LE(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_le(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_le(int expr, int llen, int val)
{
int ret = !(expr <= val);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_LT(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_lt(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_lt(int expr, int llen, int val)
{
int ret = !(expr < val);
llen += printf(" = %d ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_SYSZR(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syszr(expr, llen); } while (0)
static __attribute__((unused))
int expect_syszr(int expr, int llen)
{
int ret = 0;
if (expr) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
result(llen, FAIL);
} else {
llen += printf(" = %d ", expr);
result(llen, OK);
}
return ret;
}
#define EXPECT_SYSEQ(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syseq(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_syseq(int expr, int llen, int val)
{
int ret = 0;
if (expr != val) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
result(llen, FAIL);
} else {
llen += printf(" = %d ", expr);
result(llen, OK);
}
return ret;
}
#define EXPECT_SYSNE(cond, expr, val) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_sysne(expr, llen, val); } while (0)
static __attribute__((unused))
int expect_sysne(int expr, int llen, int val)
{
int ret = 0;
if (expr == val) {
ret = 1;
llen += printf(" = %d %s ", expr, errorname(errno));
result(llen, FAIL);
} else {
llen += printf(" = %d ", expr);
result(llen, OK);
}
return ret;
}
#define EXPECT_SYSER2(cond, expr, expret, experr1, experr2) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0)
#define EXPECT_SYSER(cond, expr, expret, experr) \
EXPECT_SYSER2(cond, expr, expret, experr, 0)
static __attribute__((unused))
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 != experr1 && _errno != experr2)) {
ret = 1;
if (experr2 == 0)
llen += printf(" != (%d %s) ", expret, errorname(experr1));
else
llen += printf(" != (%d %s %s) ", expret, errorname(experr1), errorname(experr2));
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_PTRZR(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrzr(expr, llen); } while (0)
static __attribute__((unused))
int expect_ptrzr(const void *expr, int llen)
{
int ret = 0;
llen += printf(" = <%p> ", expr);
if (expr) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_PTRNZ(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrnz(expr, llen); } while (0)
static __attribute__((unused))
int expect_ptrnz(const void *expr, int llen)
{
int ret = 0;
llen += printf(" = <%p> ", expr);
if (!expr) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_PTREQ(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptreq(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptreq(const void *expr, int llen, const void *cmp)
{
int ret = 0;
llen += printf(" = <%p> ", expr);
if (expr != cmp) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_PTRNE(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrne(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptrne(const void *expr, int llen, const void *cmp)
{
int ret = 0;
llen += printf(" = <%p> ", expr);
if (expr == cmp) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_PTRGE(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrge(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptrge(const void *expr, int llen, const void *cmp)
{
int ret = !(expr >= cmp);
llen += printf(" = <%p> ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_PTRGT(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrgt(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptrgt(const void *expr, int llen, const void *cmp)
{
int ret = !(expr > cmp);
llen += printf(" = <%p> ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_PTRLE(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrle(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptrle(const void *expr, int llen, const void *cmp)
{
int ret = !(expr <= cmp);
llen += printf(" = <%p> ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_PTRLT(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrlt(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_ptrlt(const void *expr, int llen, const void *cmp)
{
int ret = !(expr < cmp);
llen += printf(" = <%p> ", expr);
result(llen, ret ? FAIL : OK);
return ret;
}
#define EXPECT_PTRER2(cond, expr, expret, experr1, experr2) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_ptrerr2(expr, expret, experr1, experr2, llen); } while (0)
#define EXPECT_PTRER(cond, expr, expret, experr) \
EXPECT_PTRER2(cond, expr, expret, experr, 0)
static __attribute__((unused))
int expect_ptrerr2(const void *expr, const void *expret, int experr1, int experr2, int llen)
{
int ret = 0;
int _errno = errno;
llen += printf(" = <%p> %s ", expr, errorname(_errno));
if (expr != expret || (_errno != experr1 && _errno != experr2)) {
ret = 1;
if (experr2 == 0)
llen += printf(" != (<%p> %s) ", expret, errorname(experr1));
else
llen += printf(" != (<%p> %s %s) ", expret, errorname(experr1), errorname(experr2));
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_STRZR(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strzr(expr, llen); } while (0)
static __attribute__((unused))
int expect_strzr(const char *expr, int llen)
{
int ret = 0;
llen += printf(" = <%s> ", expr ? expr : "(null)");
if (expr) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_STRNZ(cond, expr) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strnz(expr, llen); } while (0)
static __attribute__((unused))
int expect_strnz(const char *expr, int llen)
{
int ret = 0;
llen += printf(" = <%s> ", expr ? expr : "(null)");
if (!expr) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_STREQ(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_streq(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_streq(const char *expr, int llen, const char *cmp)
{
int ret = 0;
llen += printf(" = <%s> ", expr);
if (strcmp(expr, cmp) != 0) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_STRNE(cond, expr, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strne(expr, llen, cmp); } while (0)
static __attribute__((unused))
int expect_strne(const char *expr, int llen, const char *cmp)
{
int ret = 0;
llen += printf(" = <%s> ", expr);
if (strcmp(expr, cmp) == 0) {
ret = 1;
result(llen, FAIL);
} else {
result(llen, OK);
}
return ret;
}
#define EXPECT_STRBUFEQ(cond, expr, buf, val, cmp) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_str_buf_eq(expr, buf, val, llen, cmp); } while (0)
static __attribute__((unused))
int expect_str_buf_eq(size_t expr, const char *buf, size_t val, int llen, const char *cmp)
{
llen += printf(" = %lu <%s> ", (unsigned long)expr, buf);
if (strcmp(buf, cmp) != 0) {
result(llen, FAIL);
return 1;
}
if (expr != val) {
result(llen, FAIL);
return 1;
}
result(llen, OK);
return 0;
}
#define EXPECT_STRTOX(cond, func, input, base, expected, chars, expected_errno) \
do { if (!(cond)) result(llen, SKIPPED); else ret += expect_strtox(llen, func, input, base, expected, chars, expected_errno); } while (0)
static __attribute__((unused))
int expect_strtox(int llen, void *func, const char *input, int base, intmax_t expected, int expected_chars, int expected_errno)
{
char *endptr;
int actual_errno, actual_chars;
intmax_t r;
errno = 0;
if (func == strtol) {
r = strtol(input, &endptr, base);
} else if (func == strtoul) {
r = strtoul(input, &endptr, base);
} else {
result(llen, FAIL);
return 1;
}
actual_errno = errno;
actual_chars = endptr - input;
llen += printf(" %lld = %lld", (long long)expected, (long long)r);
if (r != expected) {
result(llen, FAIL);
return 1;
}
if (expected_chars == -1) {
if (*endptr != '\0') {
result(llen, FAIL);
return 1;
}
} else if (expected_chars != actual_chars) {
result(llen, FAIL);
return 1;
}
if (actual_errno != expected_errno) {
result(llen, FAIL);
return 1;
}
result(llen, OK);
return 0;
}
/* declare tests based on line numbers. There must be exactly one test per line. */
#define CASE_TEST(name) \
case __LINE__: llen += printf("%d %s", test, #name);
/* constructors validate that they are executed in definition order */
__attribute__((constructor))
static void constructor1(void)
{
constructor_test_value = 1;
}
__attribute__((constructor))
static void constructor2(int argc, char **argv, char **envp)
{
if (argc && argv && envp)
constructor_test_value *= 2;
}
int run_startup(int min, int max)
{
int test;
int ret = 0;
/* kernel at least passes HOME and TERM, shell passes more */
int env_total = 2;
/* checking NULL for argv/argv0, environ and _auxv is not enough, let's compare with sbrk(0) or &end */
extern char end;
char *brk = sbrk(0) != (void *)-1 ? sbrk(0) : &end;
/* differ from nolibc, both glibc and musl have no global _auxv */
const unsigned long *test_auxv = (void *)-1;
#ifdef NOLIBC
test_auxv = _auxv;
#endif
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(argc); EXPECT_GE(1, test_argc, 1); break;
CASE_TEST(argv_addr); EXPECT_PTRGT(1, test_argv, brk); break;
CASE_TEST(argv_environ); EXPECT_PTRLT(1, test_argv, environ); break;
CASE_TEST(argv_total); EXPECT_EQ(1, environ - test_argv - 1, test_argc ?: 1); break;
CASE_TEST(argv0_addr); EXPECT_PTRGT(1, argv0, brk); break;
CASE_TEST(argv0_str); EXPECT_STRNZ(1, argv0 > brk ? argv0 : NULL); break;
CASE_TEST(argv0_len); EXPECT_GE(1, argv0 > brk ? strlen(argv0) : 0, 1); break;
CASE_TEST(environ_addr); EXPECT_PTRGT(1, environ, brk); break;
CASE_TEST(environ_envp); EXPECT_PTREQ(1, environ, test_envp); break;
CASE_TEST(environ_auxv); EXPECT_PTRLT(test_auxv != (void *)-1, environ, test_auxv); break;
CASE_TEST(environ_total); EXPECT_GE(test_auxv != (void *)-1, (void *)test_auxv - (void *)environ - 1, env_total); break;
CASE_TEST(environ_HOME); EXPECT_PTRNZ(1, getenv("HOME")); break;
CASE_TEST(auxv_addr); EXPECT_PTRGT(test_auxv != (void *)-1, test_auxv, brk); break;
CASE_TEST(auxv_AT_UID); EXPECT_EQ(1, getauxval(AT_UID), getuid()); break;
CASE_TEST(constructor); EXPECT_EQ(1, constructor_test_value, 2); break;
CASE_TEST(linkage_errno); EXPECT_PTREQ(1, linkage_test_errno_addr(), &errno); break;
CASE_TEST(linkage_constr); EXPECT_EQ(1, linkage_test_constructor_test_value, 6); break;
case __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
}
}
return ret;
}
/* used by some syscall tests below */
int test_getdents64(const char *dir)
{
char buffer[4096];
int fd, ret;
int err;
ret = fd = open(dir, O_RDONLY | O_DIRECTORY, 0);
if (ret < 0)
return ret;
ret = getdents64(fd, (void *)buffer, sizeof(buffer));
err = errno;
close(fd);
errno = err;
return ret;
}
int test_getpagesize(void)
{
int x = getpagesize();
int c;
if (x < 0)
return x;
#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
/*
* x86 family is always 4K page.
*/
c = (x == 4096);
#elif defined(__aarch64__)
/*
* Linux aarch64 supports three values of page size: 4K, 16K, and 64K
* which are selected at kernel compilation time.
*/
c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
#else
/*
* Assuming other architectures must have at least 4K page.
*/
c = (x >= 4096);
#endif
return !c;
}
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;
}
}
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) && stat(argv0, &st) && stat("/", &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;
}
int test_uname(void)
{
struct utsname buf;
char osrelease[sizeof(buf.release)];
ssize_t r;
int fd;
memset(&buf.domainname, 'P', sizeof(buf.domainname));
if (uname(&buf))
return 1;
if (strncmp("Linux", buf.sysname, sizeof(buf.sysname)))
return 1;
fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
if (fd == -1)
return 1;
r = read(fd, osrelease, sizeof(osrelease));
if (r == -1)
return 1;
close(fd);
if (osrelease[r - 1] == '\n')
r--;
/* Validate one of the later fields to ensure field sizes are correct */
if (strncmp(osrelease, buf.release, r))
return 1;
/* Ensure the field domainname is set, it is missing from struct old_utsname */
if (strnlen(buf.domainname, sizeof(buf.domainname)) == sizeof(buf.domainname))
return 1;
return 0;
}
int test_mmap_munmap(void)
{
int ret, fd, i, page_size;
void *mem;
size_t file_size, length;
off_t offset, pa_offset;
struct stat stat_buf;
const char * const files[] = {
"/dev/zero",
"/proc/1/exe", "/proc/self/exe",
argv0,
NULL
};
page_size = getpagesize();
if (page_size < 0)
return 1;
/* find a right file to mmap, existed and accessible */
for (i = 0; files[i] != NULL; i++) {
ret = fd = open(files[i], O_RDONLY);
if (ret == -1)
continue;
else
break;
}
if (ret == -1)
return 1;
ret = stat(files[i], &stat_buf);
if (ret == -1)
goto end;
/* file size of the special /dev/zero is 0, let's assign one manually */
if (i == 0)
file_size = 3*page_size;
else
file_size = stat_buf.st_size;
offset = file_size - 1;
if (offset < 0)
offset = 0;
length = file_size - offset;
pa_offset = offset & ~(page_size - 1);
mem = mmap(NULL, length + offset - pa_offset, PROT_READ, MAP_SHARED, fd, pa_offset);
if (mem == MAP_FAILED) {
ret = 1;
goto end;
}
ret = munmap(mem, length + offset - pa_offset);
end:
close(fd);
return !!ret;
}
int test_pipe(void)
{
const char *const msg = "hello, nolibc";
int pipefd[2];
char buf[32];
size_t len;
if (pipe(pipefd) == -1)
return 1;
write(pipefd[1], msg, strlen(msg));
close(pipefd[1]);
len = read(pipefd[0], buf, sizeof(buf));
close(pipefd[0]);
if (len != strlen(msg))
return 1;
return !!memcmp(buf, msg, len);
}
int test_rlimit(void)
{
struct rlimit rlim = {
.rlim_cur = 1 << 20,
.rlim_max = 1 << 21,
};
int ret;
ret = setrlimit(RLIMIT_CORE, &rlim);
if (ret)
return -1;
rlim.rlim_cur = 0;
rlim.rlim_max = 0;
ret = getrlimit(RLIMIT_CORE, &rlim);
if (ret)
return -1;
if (rlim.rlim_cur != 1 << 20)
return -1;
if (rlim.rlim_max != 1 << 21)
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;
int test;
int tmp;
int ret = 0;
void *p1, *p2;
int has_gettid = 1;
int has_brk;
/* <proc> indicates whether or not /proc is mounted */
proc = stat("/proc", &stat_buf) == 0;
/* this will be used to skip certain tests that can't be run unprivileged */
euid0 = geteuid() == 0;
/* from 2.30, glibc provides gettid() */
#if defined(__GLIBC_MINOR__) && defined(__GLIBC__)
has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
#endif
/* on musl setting brk()/sbrk() always fails */
has_brk = brk(0) == 0;
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(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;
CASE_TEST(getpgid_self); EXPECT_SYSNE(1, getpgid(0), -1); break;
CASE_TEST(getpgid_bad); EXPECT_SYSER(1, getpgid(-1), -1, ESRCH); break;
CASE_TEST(kill_0); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
CASE_TEST(kill_CONT); EXPECT_SYSZR(1, kill(getpid(), 0)); break;
CASE_TEST(kill_BADPID); EXPECT_SYSER(1, kill(INT_MAX, 0), -1, ESRCH); break;
CASE_TEST(sbrk_0); EXPECT_PTRNE(has_brk, sbrk(0), (void *)-1); break;
CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(has_brk, (p2 == (void *)-1) || p2 == p1); break;
CASE_TEST(brk); EXPECT_SYSZR(has_brk, brk(sbrk(0))); break;
CASE_TEST(chdir_root); EXPECT_SYSZR(1, chdir("/")); chdir(getenv("PWD")); break;
CASE_TEST(chdir_dot); EXPECT_SYSZR(1, chdir(".")); break;
CASE_TEST(chdir_blah); EXPECT_SYSER(1, chdir("/blah"), -1, ENOENT); break;
CASE_TEST(chmod_argv0); EXPECT_SYSZR(1, chmod(argv0, 0555)); break;
CASE_TEST(chmod_self); EXPECT_SYSER(proc, chmod("/proc/self", 0555), -1, EPERM); break;
CASE_TEST(chown_self); EXPECT_SYSER(proc, chown("/proc/self", 0, 0), -1, EPERM); break;
CASE_TEST(chroot_root); EXPECT_SYSZR(euid0, chroot("/")); break;
CASE_TEST(chroot_blah); EXPECT_SYSER(1, chroot("/proc/self/blah"), -1, ENOENT); break;
CASE_TEST(chroot_exe); EXPECT_SYSER(1, chroot(argv0), -1, ENOTDIR); break;
CASE_TEST(close_m1); EXPECT_SYSER(1, close(-1), -1, EBADF); break;
CASE_TEST(close_dup); EXPECT_SYSZR(1, close(dup(0))); break;
CASE_TEST(dup_0); tmp = dup(0); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
CASE_TEST(dup_m1); tmp = dup(-1); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
CASE_TEST(dup2_0); tmp = dup2(0, 100); EXPECT_SYSNE(1, tmp, -1); close(tmp); break;
CASE_TEST(dup2_m1); tmp = dup2(-1, 100); EXPECT_SYSER(1, tmp, -1, EBADF); if (tmp != -1) close(tmp); break;
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_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(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;
CASE_TEST(link_blah); EXPECT_SYSER(1, link("/proc/self/blah", "/blah"), -1, ENOENT); break;
CASE_TEST(link_dir); EXPECT_SYSER(euid0, link("/", "/blah"), -1, EPERM); break;
CASE_TEST(link_cross); EXPECT_SYSER(proc, link("/proc/self/cmdline", "/blah"), -1, EXDEV); break;
CASE_TEST(lseek_m1); EXPECT_SYSER(1, lseek(-1, 0, SEEK_SET), -1, EBADF); break;
CASE_TEST(lseek_0); EXPECT_SYSER(1, lseek(0, 0, SEEK_SET), -1, ESPIPE); break;
CASE_TEST(mkdir_root); EXPECT_SYSER(1, mkdir("/", 0755), -1, EEXIST); break;
CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", 0), -1); if (tmp != -1) close(tmp); break;
CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", 0), -1, ENOENT); if (tmp != -1) close(tmp); break;
CASE_TEST(pipe); EXPECT_SYSZR(1, test_pipe()); break;
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(NULL, 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(rlimit); EXPECT_SYSZR(1, test_rlimit()); break;
CASE_TEST(rmdir_blah); EXPECT_SYSER(1, rmdir("/blah"), -1, ENOENT); 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;
CASE_TEST(select_stdout); EXPECT_SYSNE(1, ({ fd_set fds; FD_ZERO(&fds); FD_SET(1, &fds); select(2, NULL, &fds, NULL, NULL); }), -1); break;
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(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;
CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"), -1, ENOENT); break;
CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); break;
CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNOHANG), -1, ESRCH); break;
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 */
}
}
return ret;
}
int run_stdlib(int min, int max)
{
int test;
int ret = 0;
for (test = min; test >= 0 && test <= max; test++) {
int llen = 0; /* line length */
/* For functions that take a long buffer, like strlcat()
* Add some more chars after the \0, to test functions that overwrite the buffer set
* the \0 at the exact right position.
*/
char buf[10] = "test123456";
buf[4] = '\0';
/* avoid leaving empty lines below, this will insert holes into
* test numbers.
*/
switch (test + __LINE__ + 1) {
CASE_TEST(getenv_TERM); EXPECT_STRNZ(1, getenv("TERM")); break;
CASE_TEST(getenv_blah); EXPECT_STRZR(1, getenv("blah")); break;
CASE_TEST(setcmp_blah_blah); EXPECT_EQ(1, strcmp("blah", "blah"), 0); break;
CASE_TEST(setcmp_blah_blah2); EXPECT_NE(1, strcmp("blah", "blah2"), 0); break;
CASE_TEST(setncmp_blah_blah); EXPECT_EQ(1, strncmp("blah", "blah", 10), 0); break;
CASE_TEST(setncmp_blah_blah4); EXPECT_EQ(1, strncmp("blah", "blah4", 4), 0); break;
CASE_TEST(setncmp_blah_blah5); EXPECT_NE(1, strncmp("blah", "blah5", 5), 0); break;
CASE_TEST(setncmp_blah_blah6); EXPECT_NE(1, strncmp("blah", "blah6", 6), 0); break;
CASE_TEST(strchr_foobar_o); EXPECT_STREQ(1, strchr("foobar", 'o'), "oobar"); break;
CASE_TEST(strchr_foobar_z); EXPECT_STRZR(1, strchr("foobar", 'z')); break;
CASE_TEST(strrchr_foobar_o); EXPECT_STREQ(1, strrchr("foobar", 'o'), "obar"); break;
CASE_TEST(strrchr_foobar_z); EXPECT_STRZR(1, strrchr("foobar", 'z')); break;
CASE_TEST(strlcat_0); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 0), buf, 3, "test"); break;
CASE_TEST(strlcat_1); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 1), buf, 4, "test"); break;
CASE_TEST(strlcat_5); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 5), buf, 7, "test"); break;
CASE_TEST(strlcat_6); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 6), buf, 7, "testb"); break;
CASE_TEST(strlcat_7); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 7), buf, 7, "testba"); break;
CASE_TEST(strlcat_8); EXPECT_STRBUFEQ(is_nolibc, strlcat(buf, "bar", 8), buf, 7, "testbar"); break;
CASE_TEST(strlcpy_0); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 0), buf, 3, "test"); break;
CASE_TEST(strlcpy_1); EXPECT_STRBUFEQ(is_nolibc, strlcpy(buf, "bar", 1), buf, 3, ""); break;
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(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;
CASE_TEST(memcmp_20_e0); EXPECT_LT(1, memcmp("aaa\x20", "aaa\xe0", 4), 0); break;
CASE_TEST(memcmp_e0_20); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x20", 4), 0); break;
CASE_TEST(memcmp_80_e0); EXPECT_LT(1, memcmp("aaa\x80", "aaa\xe0", 4), 0); break;
CASE_TEST(memcmp_e0_80); EXPECT_GT(1, memcmp("aaa\xe0", "aaa\x80", 4), 0); break;
CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break;
CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break;
CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break;
CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break;
CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break;
CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break;
CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break;
CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break;
CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break;
CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break;
CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break;
CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break;
CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break;
CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break;
CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break;
CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break;
CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break;
CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break;
CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break;
CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break;
CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break;
CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break;
CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break;
CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break;
CASE_TEST(limit_int_fast8_max); EXPECT_EQ(1, INT_FAST8_MAX, (int_fast8_t) 0x7f); break;
CASE_TEST(limit_int_fast8_min); EXPECT_EQ(1, INT_FAST8_MIN, (int_fast8_t) 0x80); break;
CASE_TEST(limit_uint_fast8_max); EXPECT_EQ(1, UINT_FAST8_MAX, (uint_fast8_t) 0xff); break;
CASE_TEST(limit_int_fast16_min); EXPECT_EQ(1, INT_FAST16_MIN, (int_fast16_t) SINT_MIN_OF_TYPE(int_fast16_t)); break;
CASE_TEST(limit_int_fast16_max); EXPECT_EQ(1, INT_FAST16_MAX, (int_fast16_t) SINT_MAX_OF_TYPE(int_fast16_t)); break;
CASE_TEST(limit_uint_fast16_max); EXPECT_EQ(1, UINT_FAST16_MAX, (uint_fast16_t) UINTPTR_MAX); break;
CASE_TEST(limit_int_fast32_min); EXPECT_EQ(1, INT_FAST32_MIN, (int_fast32_t) SINT_MIN_OF_TYPE(int_fast32_t)); break;
CASE_TEST(limit_int_fast32_max); EXPECT_EQ(1, INT_FAST32_MAX, (int_fast32_t) SINT_MAX_OF_TYPE(int_fast32_t)); 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) 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;
CASE_TEST(sizeof_long_sane); EXPECT_EQ(1, sizeof(long) == 8 || sizeof(long) == 4, 1); break;
CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, sizeof(long) == 8 ? (intptr_t) 0x8000000000000000LL : (intptr_t) 0x80000000); break;
CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, sizeof(long) == 8 ? (intptr_t) 0x7fffffffffffffffLL : (intptr_t) 0x7fffffff); break;
CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, sizeof(long) == 8 ? (uintptr_t) 0xffffffffffffffffULL : (uintptr_t) 0xffffffffU); break;
CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, sizeof(long) == 8 ? (ptrdiff_t) 0x8000000000000000LL : (ptrdiff_t) 0x80000000); break;
CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, sizeof(long) == 8 ? (ptrdiff_t) 0x7fffffffffffffffLL : (ptrdiff_t) 0x7fffffff); break;
CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, sizeof(long) == 8 ? (size_t) 0xffffffffffffffffULL : (size_t) 0xffffffffU); break;
CASE_TEST(strtol_simple); EXPECT_STRTOX(1, strtol, "35", 10, 35, -1, 0); break;
CASE_TEST(strtol_positive); EXPECT_STRTOX(1, strtol, "+35", 10, 35, -1, 0); break;
CASE_TEST(strtol_negative); EXPECT_STRTOX(1, strtol, "-35", 10, -35, -1, 0); break;
CASE_TEST(strtol_hex_auto); EXPECT_STRTOX(1, strtol, "0xFF", 0, 255, -1, 0); break;
CASE_TEST(strtol_base36); EXPECT_STRTOX(1, strtol, "12yZ", 36, 50507, -1, 0); break;
CASE_TEST(strtol_cutoff); EXPECT_STRTOX(1, strtol, "1234567890", 8, 342391, 7, 0); break;
CASE_TEST(strtol_octal_auto); EXPECT_STRTOX(1, strtol, "011", 0, 9, -1, 0); break;
CASE_TEST(strtol_hex_00); EXPECT_STRTOX(1, strtol, "0x00", 16, 0, -1, 0); break;
CASE_TEST(strtol_hex_FF); EXPECT_STRTOX(1, strtol, "FF", 16, 255, -1, 0); break;
CASE_TEST(strtol_hex_ff); EXPECT_STRTOX(1, strtol, "ff", 16, 255, -1, 0); break;
CASE_TEST(strtol_hex_prefix); EXPECT_STRTOX(1, strtol, "0xFF", 16, 255, -1, 0); break;
CASE_TEST(strtol_trailer); EXPECT_STRTOX(1, strtol, "35foo", 10, 35, 2, 0); break;
CASE_TEST(strtol_overflow); EXPECT_STRTOX(1, strtol, "0x8000000000000000", 16, LONG_MAX, -1, ERANGE); break;
CASE_TEST(strtol_underflow); EXPECT_STRTOX(1, strtol, "-0x8000000000000001", 16, LONG_MIN, -1, ERANGE); break;
CASE_TEST(strtoul_negative); EXPECT_STRTOX(1, strtoul, "-0x1", 16, ULONG_MAX, 4, 0); break;
CASE_TEST(strtoul_overflow); EXPECT_STRTOX(1, strtoul, "0x10000000000000000", 16, ULONG_MAX, -1, ERANGE); break;
CASE_TEST(strerror_success); EXPECT_STREQ(is_nolibc, strerror(0), "errno=0"); break;
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 __LINE__:
return ret; /* must be last */
/* note: do not set any defaults so as to permit holes above */
}
}
return ret;
}
#define EXPECT_VFPRINTF(c, expected, fmt, ...) \
ret += expect_vfprintf(llen, c, expected, fmt, ##__VA_ARGS__)
static int expect_vfprintf(int llen, int c, const char *expected, const char *fmt, ...)
{
int ret, fd;
ssize_t w, r;
char buf[100];
FILE *memfile;
va_list args;
fd = open("/tmp", O_TMPFILE | O_EXCL | O_RDWR, 0600);
if (fd == -1) {
result(llen, SKIPPED);
return 0;
}
memfile = fdopen(fd, "w+");
if (!memfile) {
result(llen, FAIL);
return 1;
}
va_start(args, fmt);
w = vfprintf(memfile, fmt, args);
va_end(args);
if (w != c) {
llen += printf(" written(%d) != %d", (int)w, c);
result(llen, FAIL);
return 1;
}
fflush(memfile);
lseek(fd, 0, SEEK_SET);
r = read(fd, buf, sizeof(buf) - 1);
fclose(memfile);
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);
result(llen, ret ? FAIL : OK);
return ret;
}
static int run_vfprintf(int min, int max)
{
int test;
int ret = 0;
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 (i = 0; i < 200; i++)
ptr[i] = 'P';
return 1;
}
static int run_protection(int min __attribute__((unused)),
int max __attribute__((unused)))
{
pid_t pid;
int llen = 0, status;
struct rlimit rlimit = { 0, 0 };
llen += printf("0 -fstackprotector ");
#if !defined(_NOLIBC_STACKPROTECTOR)
llen += printf("not supported");
result(llen, SKIPPED);
return 0;
#endif
#if defined(_NOLIBC_STACKPROTECTOR)
if (!__stack_chk_guard) {
llen += printf("__stack_chk_guard not initialized");
result(llen, FAIL);
return 1;
}
#endif
pid = -1;
pid = fork();
switch (pid) {
case -1:
llen += printf("fork()");
result(llen, FAIL);
return 1;
case 0:
close(STDOUT_FILENO);
close(STDERR_FILENO);
prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
setrlimit(RLIMIT_CORE, &rlimit);
smash_stack();
return 1;
default:
pid = waitpid(pid, &status, 0);
if (pid == -1 || !WIFSIGNALED(status) || WTERMSIG(status) != SIGABRT) {
llen += printf("waitpid()");
result(llen, FAIL);
return 1;
}
result(llen, OK);
return 0;
}
}
/* prepare what needs to be prepared for pid 1 (stdio, /dev, /proc, etc) */
int prepare(void)
{
struct stat stat_buf;
/* It's possible that /dev doesn't even exist or was not mounted, so
* we'll try to create it, mount it, or create minimal entries into it.
* We want at least /dev/null and /dev/console.
*/
if (stat("/dev/.", &stat_buf) == 0 || mkdir("/dev", 0755) == 0) {
if (stat("/dev/console", &stat_buf) != 0 ||
stat("/dev/null", &stat_buf) != 0 ||
stat("/dev/zero", &stat_buf) != 0) {
/* try devtmpfs first, otherwise fall back to manual creation */
if (mount("/dev", "/dev", "devtmpfs", 0, 0) != 0) {
mknod("/dev/console", 0600 | S_IFCHR, makedev(5, 1));
mknod("/dev/null", 0666 | S_IFCHR, makedev(1, 3));
mknod("/dev/zero", 0666 | S_IFCHR, makedev(1, 5));
}
}
}
/* If no /dev/console was found before calling init, stdio is closed so
* we need to reopen it from /dev/console. If it failed above, it will
* still fail here and we cannot emit a message anyway.
*/
if (close(dup(1)) == -1) {
int fd = open("/dev/console", O_RDWR);
if (fd >= 0) {
if (fd != 0)
dup2(fd, 0);
if (fd != 1)
dup2(fd, 1);
if (fd != 2)
dup2(fd, 2);
if (fd > 2)
close(fd);
puts("\nSuccessfully reopened /dev/console.");
}
}
/* try to mount /proc if not mounted. Silently fail otherwise */
if (stat("/proc/.", &stat_buf) == 0 || mkdir("/proc", 0755) == 0) {
if (stat("/proc/self", &stat_buf) != 0) {
/* If not mountable, remove /proc completely to avoid misuse */
if (mount("none", "/proc", "proc", 0, 0) != 0)
rmdir("/proc");
}
}
/* some tests rely on a writable /tmp */
mkdir("/tmp", 0755);
return 0;
}
/* This is the definition of known test names, with their functions */
static const struct test test_names[] = {
/* add new tests here */
{ .name = "startup", .func = run_startup },
{ .name = "syscall", .func = run_syscall },
{ .name = "stdlib", .func = run_stdlib },
{ .name = "vfprintf", .func = run_vfprintf },
{ .name = "protection", .func = run_protection },
{ 0 }
};
static int is_setting_valid(char *test)
{
int idx, len, test_len, valid = 0;
char delimiter;
if (!test)
return valid;
test_len = strlen(test);
for (idx = 0; test_names[idx].name; idx++) {
len = strlen(test_names[idx].name);
if (test_len < len)
continue;
if (strncmp(test, test_names[idx].name, len) != 0)
continue;
delimiter = test[len];
if (delimiter != ':' && delimiter != ',' && delimiter != '\0')
continue;
valid = 1;
break;
}
return valid;
}
int main(int argc, char **argv, char **envp)
{
int min = 0;
int max = INT_MAX;
int ret = 0;
int err;
int idx;
char *test;
argv0 = argv[0];
test_argc = argc;
test_argv = argv;
test_envp = envp;
/* when called as init, it's possible that no console was opened, for
* example if no /dev file system was provided. We'll check that fd#1
* was opened, and if not we'll attempt to create and open /dev/console
* and /dev/null that we'll use for later tests.
*/
if (getpid() == 1)
prepare();
/* the definition of a series of tests comes from either argv[1] or the
* "NOLIBC_TEST" environment variable. It's made of a comma-delimited
* series of test names and optional ranges:
* syscall:5-15[:.*],stdlib:8-10
*/
test = argv[1];
if (!is_setting_valid(test))
test = getenv("NOLIBC_TEST");
if (is_setting_valid(test)) {
char *comma, *colon, *dash, *value;
do {
comma = strchr(test, ',');
if (comma)
*(comma++) = '\0';
colon = strchr(test, ':');
if (colon)
*(colon++) = '\0';
for (idx = 0; test_names[idx].name; idx++) {
if (strcmp(test, test_names[idx].name) == 0)
break;
}
if (test_names[idx].name) {
/* The test was named, it will be called at least
* once. We may have an optional range at <colon>
* here, which defaults to the full range.
*/
do {
min = 0; max = INT_MAX;
value = colon;
if (value && *value) {
colon = strchr(value, ':');
if (colon)
*(colon++) = '\0';
dash = strchr(value, '-');
if (dash)
*(dash++) = '\0';
/* support :val: :min-max: :min-: :-max: */
if (*value)
min = atoi(value);
if (!dash)
max = min;
else if (*dash)
max = atoi(dash);
value = colon;
}
/* now's time to call the test */
printf("Running test '%s'\n", test_names[idx].name);
err = test_names[idx].func(min, max);
ret += err;
printf("Errors during this test: %d\n\n", err);
} while (colon && *colon);
} else
printf("Ignoring unknown test name '%s'\n", test);
test = comma;
} while (test && *test);
} else {
/* no test mentioned, run everything */
for (idx = 0; test_names[idx].name; idx++) {
printf("Running test '%s'\n", test_names[idx].name);
err = test_names[idx].func(min, max);
ret += err;
printf("Errors during this test: %d\n\n", err);
}
}
printf("Total number of errors: %d\n", ret);
if (getpid() == 1) {
/* we're running as init, there's no other process on the
* system, thus likely started from a VM for a quick check.
* Exiting will provoke a kernel panic that may be reported
* as an error by Qemu or the hypervisor, while stopping
* cleanly will often be reported as a success. This allows
* to use the output of this program for bisecting kernels.
*/
printf("Leaving init with final status: %d\n", !!ret);
if (ret == 0)
reboot(RB_POWER_OFF);
#if defined(__x86_64__)
/* QEMU started with "-device isa-debug-exit -no-reboot" will
* exit with status code 2N+1 when N is written to 0x501. We
* hard-code the syscall here as it's arch-dependent.
*/
else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
__asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
/* if it does nothing, fall back to the regular panic */
#endif
}
printf("Exiting with status %d\n", !!ret);
return !!ret;
}
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