1#include <unistd.h> 2#include <errno.h> 3#include <fcntl.h> 4#include "syscall.h" 5 6void __procfdname(char *, unsigned); 7 8int fchdir(int fd) 9{ 10 int ret = __syscall(SYS_fchdir, fd); 11 if (ret != -EBADF || __syscall(SYS_fcntl, fd, F_GETFD) < 0) 12 return __syscall_ret(ret); 13 14 char buf[15+3*sizeof(int)]; 15 __procfdname(buf, fd); 16 return syscall(SYS_chdir, buf); 17} 18