fchdir.c raw

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