3 files changed, 30 insertions, 6 deletions
diff --git a/src/libc/include/stdio.h b/src/libc/include/stdio.h
index 159bdca..d533025 100644
--- a/src/libc/include/stdio.h
+++ b/src/libc/include/stdio.h
@@ -83,7 +83,7 @@ int putchar(int c);
 off_t lseek(int fd, off_t off, int whence);
 
 int remove(const char *path);
-int rename(const char *old, const char *new);
+int rename(const char *oldpath, const char *newpath);
 
 #define L_tmpnam (5 + 16 + 1)
 char *tmpnam(char *s);
diff --git a/src/libc/stdio/misc.c b/src/libc/stdio/misc.c
index 7e8e746..6cd5b35 100644
--- a/src/libc/stdio/misc.c
+++ b/src/libc/stdio/misc.c
@@ -1,3 +1,6 @@
+#include <camellia.h>
+#include <camellia/flags.h>
+#include <camellia/syscalls.h>
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
@@ -30,11 +33,28 @@ int remove(const char *path) {
 	return unlink(path);
 }
 
-// TODO! VFSOP_MOVE
-int rename(const char *old, const char *new) {
-	(void)old; (void)new;
-	errno = ENOSYS;
-	return -1;
+int rename(const char *oldpath, const char *newpath) {
+	// TODO require a duplex flag in open()
+	hid_t from, to;
+	from = camellia_open(oldpath, OPEN_RW);
+	if (from < 0) {
+		return -1;
+	}
+	to = camellia_open(newpath, OPEN_WRITE | OPEN_CREATE);
+	if (to < 0) {
+		close(from);
+		return -1;
+	}
+
+	long ret = _sys_duplex(from, to, DUPLEX_REMOVE);
+	close(from);
+	close(to);
+	if (ret < 0) {
+		errno = -ret;
+		return -1;
+	} else {
+		return 0;
+	}
 }
 
 // TODO tmpnam
diff --git a/src/libc/syscall.c b/src/libc/syscall.c
index f44c775..c6e3762 100644
--- a/src/libc/syscall.c
+++ b/src/libc/syscall.c
@@ -98,6 +98,10 @@ hid_t _sys_getnull(int flags) {
 	return (hid_t)_syscall(_SYS_GETNULL, (long)flags, 0, 0, 0, 0);
 }
 
+long _sys_duplex(hid_t from, hid_t to, int flags) {
+	return _syscall(_SYS_DUPLEX, (long)from, (long)to, (long)flags, 0, 0);
+}
+
 long _sys_execbuf(void __user *buf, size_t len) {
 	return _syscall(_SYS_EXECBUF, (long)buf, (long)len, 0, 0, 0);
 }