This is used in various selftests and will be handy when integrating those with nolibc.
Signed-off-by: Thomas Weißschuh thomas.weissschuh@linutronix.de --- tools/include/nolibc/unistd.h | 28 ++++++++++++++++++++++++++++ tools/testing/selftests/nolibc/nolibc-test.c | 2 ++ 2 files changed, 30 insertions(+)
diff --git a/tools/include/nolibc/unistd.h b/tools/include/nolibc/unistd.h index ac7d53d986cd11ac84dd0a17e5a7055c779b2b10..a18e318399880dec12284ea86cb91cf46cfc4aaa 100644 --- a/tools/include/nolibc/unistd.h +++ b/tools/include/nolibc/unistd.h @@ -17,6 +17,34 @@ #define STDOUT_FILENO 1 #define STDERR_FILENO 2
+#define F_OK 0 +#define X_OK 1 +#define W_OK 2 +#define R_OK 4 + +/* + * int access(const char *path, int amode); + * int faccessat(int fd, const char *path, int amode, int flag); + */ + +static __attribute__((unused)) +int sys_faccessat(int fd, const char *path, int amode, int flag) +{ + return my_syscall4(__NR_faccessat, fd, path, amode, flag); +} + +static __attribute__((unused)) +int faccessat(int fd, const char *path, int amode, int flag) +{ + return __sysret(sys_faccessat(fd, path, amode, flag)); +} + +static __attribute__((unused)) +int access(const char *path, int amode) +{ + return faccessat(AT_FDCWD, path, amode, 0); +} +
static __attribute__((unused)) int msleep(unsigned int msecs) diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index b6724c314766b0cf34d7cae5cac28a9102ebe66e..7090e6b7c37e49afe751835bbff6a7af4f4fcf2a 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -1109,6 +1109,8 @@ int run_syscall(int min, int max) * test numbers. */ switch (test + __LINE__ + 1) { + CASE_TEST(access); EXPECT_SYSZR(proc, access("/proc/self", R_OK)); break; + CASE_TEST(access_bad); EXPECT_SYSER(proc, access("/proc/self", W_OK), -1, EPERM); break; CASE_TEST(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;