#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
#include "syscall.h"
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);
}