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-rw-r--r--tools/testing/selftests/nolibc/nolibc-test.c1383
1 files changed, 1383 insertions, 0 deletions
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
new file mode 100644
index 0000000000..fb3bf91462
--- /dev/null
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -0,0 +1,1383 @@
+/* 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/stat.h>
+#include <sys/syscall.h>
+#include <sys/sysmacros.h>
+#include <sys/time.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
+
+/* 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;
+
+/* 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 putcharn(char c, size_t n)
+{
+ char buf[64];
+
+ memset(buf, c, 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]";
+
+ if (llen < 64)
+ putcharn(' ', 64 - 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);
+ 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);
+ 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;
+}
+
+
+/* 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);
+
+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(auxv_AT_PAGESZ); EXPECT_GE(1, getauxval(AT_PAGESZ), 4096); 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_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);
+}
+
+
+/* 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;
+
+ /* <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
+
+ 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(1, sbrk(0), (void *)-1); break;
+ CASE_TEST(sbrk); if ((p1 = p2 = sbrk(4096)) != (void *)-1) p2 = sbrk(-4096); EXPECT_SYSZR(1, (p2 == (void *)-1) || p2 == p1); break;
+ CASE_TEST(brk); EXPECT_SYSZR(1, 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(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((void *)1, 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((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(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((void *)1, &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;
+ 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 */
+
+ /* 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(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 __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;
+
+ 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);
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 09:47:22 +0000