remove another invalid skip of locking in ungetwc

[oweals/musl.git] / src / unistd / fchdir.c

diff --git a/src/unistd/fchdir.c b/src/unistd/fchdir.c
index b2acbc29197cbc7e8cee34266736781d1cb8e4de..72c3915eee095964e0f161183ccfcff28862a47a 100644 (file)
--- a/src/unistd/fchdir.c
+++ b/src/unistd/fchdir.c
@@ -1,7 +1,17 @@
 #include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
 #include "syscall.h"
 
+void __procfdname(char *, unsigned);
+
 int fchdir(int fd)
 {
-       return syscall1(__NR_fchdir, fd);
+       int ret = __syscall(SYS_fchdir, fd);
+       if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0)
+               return __syscall_ret(ret);
+
+       char buf[15+3*sizeof(int)];
+       __procfdname(buf, fd);
+       return syscall(SYS_chdir, buf);
 }