Three mmap/munmap related test cases are added:
- mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL)
The length argument must be greater than 0, otherwise, fail with -EINVAL.
- munmap((void *)-1, 4*1024), -1, EINVAL)
Invalid (void *)-1 address fail with -EINVAL.
- test_mmap_munmap(4*1024)
It finds a init file, mmap() it and then munmap().
Signed-off-by: Zhangjin Wu falcon@tinylab.org --- tools/testing/selftests/nolibc/nolibc-test.c | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index 80ab29e2887c..f7c0ca72cb28 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -592,6 +592,34 @@ static int test_stat_timestamps(void) return 0; }
+int test_mmap_munmap(int size) +{ + char init_files[5][20] = {"/init", "/sbin/init", "/etc/init", "/bin/init", "/bin/sh"}; + int ret, fd, i; + void *mem; + + for (i = 0; i < 5; i++) { + ret = fd = open(init_files[i], O_RDONLY); + if (ret < 0) + continue; + else + break; + } + if (ret < 0) + return ret; + + mem = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0); + if (mem == MAP_FAILED) + return -1; + + ret = munmap(mem, size); + if (ret < 0) + return ret; + + return close(fd); +} + + /* Run syscall tests between IDs <min> and <max>. * Return 0 on success, non-zero on failure. */ @@ -666,6 +694,9 @@ int run_syscall(int min, int max) 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_good); EXPECT_SYSZR(1, test_mmap_munmap(4*1024)); 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(poll_null); EXPECT_SYSZR(1, poll(NULL, 0, 0)); break;