Kernel/LibC: Implement readlink and readlinkat

libc/include/sys/syscall.h

@@ -59,6 +59,8 @@ __BEGIN_DECLS
 #define SYS_CREATE 56 // creat, mkfifo
 #define SYS_CREATE_DIR 57 // mkdir
 #define SYS_UNLINK 58
+#define SYS_READLINK 59
+#define SYS_READLINKAT 60
 
 __END_DECLS
 

libc/unistd.cpp

@@ -78,6 +78,16 @@ ssize_t write(int fildes, const void* buf, size_t nbyte)
 	return syscall(SYS_WRITE, fildes, buf, nbyte);
 }
 
+ssize_t readlink(const char* __restrict path, char* __restrict buf, size_t bufsize)
+{
+	return syscall(SYS_READLINK, path, buf, bufsize);
+}
+
+ssize_t readlinkat(int fd, const char* __restrict path, char* __restrict buf, size_t bufsize)
+{
+	return syscall(SYS_READLINKAT, fd, path, buf, bufsize);
+}
+
 int dup(int fildes)
 {
 	return syscall(SYS_DUP, fildes);