math: add asuint, asuint64, asfloat and asdouble

[musl] / src / unistd / fchdir.c

diff --git a/src/unistd/fchdir.c b/src/unistd/fchdir.c
index e5595f7..dee45ba 100644 (file)
--- a/src/unistd/fchdir.c
+++ b/src/unistd/fchdir.c
@@ -1,7 +1,15 @@
 #include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
 #include "syscall.h"
 
 int fchdir(int fd)
 {
-       return syscall(SYS_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);
 }