chdir

include/unistd.h

@@ -40,6 +40,7 @@ int pipe(int *);
 int pipe2(int *pipefd, int flag);
 int isatty(int fd);
 char *getcwd(char *buffer, size_t size);
+int chdir(const char *path);
 
 pid_t fork(void);
 long clone3(struct clone_args *cl_args, size_t size);

libsrc/unistd/_syscall.h

@@ -31,6 +31,7 @@
 #define __NR_wait4   61
 #define __NR_kill    62
 #define __NR_getcwd  79
+#define __NR_chdir   80
 #define __NR_unlink  87
 #define __NR_chmod   90
 #define __NR_time    201
@@ -68,6 +69,7 @@
 #define __NR_wait4   260
 #define __NR_kill    129
 #define __NR_getcwd  17
+#define __NR_chdir   49
 #define __NR_unlinkat  35
 #define __NR_fchmodat   53
 #define __NR_clock_gettime  113

libsrc/unistd/chdir.c

@@ -0,0 +1,10 @@
+#if !defined(__APPLE__) && !defined(__WASM)
+#include "unistd.h"
+#include "_syscall.h"
+
+int chdir(const char *path) {
+  int ret;
+  SYSCALL_RET(__NR_chdir, ret);
+  return ret;
+}
+#endif