diff options
| author | Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2025-04-28 14:40:08 +0200 |
|---|---|---|
| committer | Thomas Weißschuh <linux@weissschuh.net> | 2025-05-21 15:32:06 +0200 |
| commit | 1e10b8534f5af42b7da528c254595f2a0cf4997d (patch) | |
| tree | bbf80d3036776e9ec912b063c2f37f95aec1b535 | |
| parent | bf5e8a78beded3503bbcfe86b3094a42ce492556 (diff) | |
tools/nolibc: add support for access() and faccessat()
This is used in various selftests and will be handy when integrating
those with nolibc.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-7-3c043eeab06c@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
| -rw-r--r-- | tools/include/nolibc/unistd.h | 28 | ||||
| -rw-r--r-- | tools/testing/selftests/nolibc/nolibc-test.c | 2 |
2 files changed, 30 insertions, 0 deletions
diff --git a/tools/include/nolibc/unistd.h b/tools/include/nolibc/unistd.h index ed253305fdba..25bfc7732ec7 100644 --- a/tools/include/nolibc/unistd.h +++ b/tools/include/nolibc/unistd.h @@ -20,6 +20,34 @@ #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 14a27bc6c83e..10db118b8b11 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -1112,6 +1112,8 @@ 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; |