Add support for the file descriptor based variant of chdir().
Signed-off-by: Thomas Weißschuh <[email protected]>
---
tools/include/nolibc/sys.h | 13 +++++++++++++
tools/testing/selftests/nolibc/nolibc-test.c | 2 ++
2 files changed, 15 insertions(+)
diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index
c5564f57deec88b8aa70291fcf6f9ca4dbc1d03f..a4b0fdb9b641230174f5e62d62762f59af81a00e
100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -118,6 +118,7 @@ void *sbrk(intptr_t inc)
/*
* int chdir(const char *path);
+ * int fchdir(int fildes);
*/
static __attribute__((unused))
@@ -132,6 +133,18 @@ int chdir(const char *path)
return __sysret(sys_chdir(path));
}
+static __attribute__((unused))
+int sys_fchdir(int fildes)
+{
+ return my_syscall1(__NR_fchdir, fildes);
+}
+
+static __attribute__((unused))
+int fchdir(int fildes)
+{
+ return __sysret(sys_fchdir(fildes));
+}
+
/*
* int chmod(const char *path, mode_t mode);
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c
b/tools/testing/selftests/nolibc/nolibc-test.c
index
29de21595fc95341c2aa975375a8d471cb3933fc..5927a84466cc0ede3b99611e134a8c6b8ab91e72
100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1343,6 +1343,8 @@ int run_syscall(int min, int max)
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(fchdir_stdin); EXPECT_SYSER(1,
fchdir(STDIN_FILENO), -1, ENOTDIR); break;
+ CASE_TEST(fchdir_badfd); EXPECT_SYSER(1, fchdir(-1), -1,
EBADF); break;
CASE_TEST(file_stream); EXPECT_SYSZR(1,
test_file_stream()); break;
CASE_TEST(fork); EXPECT_SYSZR(1,
test_fork(FORK_STANDARD)); break;
CASE_TEST(getdents64_root); EXPECT_SYSNE(1,
test_getdents64("/"), -1); break;
---
base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787
change-id: 20251107-nolibc-fchdir-2645c298a538
Best regards,
--
Thomas Weißschuh <[email protected]>
