Kernel/LibC: Add chdir function and syscall

3 files changed, 6 insertions, 0 deletions

diff --git a/userland/libc/include/syscall.h b/userland/libc/include/syscall.h
index 3faafbf..bd1d9fc 100644
--- a/userland/libc/include/syscall.h
+++ b/userland/libc/include/syscall.h
@@ -36,6 +36,7 @@
 #define SYS_SENDTO 28
 #define SYS_KILL 29
 #define SYS_SIGACTION 30
+#define SYS_CHDIR 31
 
 int syscall(uint32_t eax, uint32_t ebx, uint32_t ecx, uint32_t edx,
             uint32_t esi, uint32_t edi);
diff --git a/userland/libc/include/unistd.h b/userland/libc/include/unistd.h
index 7d74097..5654752 100644
--- a/userland/libc/include/unistd.h
+++ b/userland/libc/include/unistd.h
@@ -21,4 +21,5 @@ int execvp(const char *file, char *const argv[]);
 void _exit(int status);
 void msleep(uint32_t ms); // not standard
 uint32_t uptime(void); // not standard
+int chdir(const char *path);
 #endif
diff --git a/userland/libc/unistd/chdir.c b/userland/libc/unistd/chdir.c
new file mode 100644
index 0000000..90b30ae
--- /dev/null
+++ b/userland/libc/unistd/chdir.c
@@ -0,0 +1,4 @@
+#include <unistd.h>
+#include <syscall.h>
+
+int chdir(const char *path) { RC_ERRNO(syscall(SYS_CHDIR, path, 0, 0, 0, 0)); }