Re: "" as target of symlink kills translator

[Neal H Walfield]

On Thu, Jun 21, 2001 at 09:45:04PM -0400, Roland McGrath wrote:
> > neal@desdemona:~/foo (0)$ ls ""
> > ls: : No such file or directory
> 
> Please look into this.  Your other tests are consistent with everything
> else being correct and this being wrong.  Does it make it as far as
> diskfs_S_dir_lookup?

Yes, something must be going wrong.  I wrote the following small
program:

        #define _GNU_SOURCE
        #include <stdio.h>
        #include <errno.h>
        #include <error.h>
        #include <hurd.h>
        #include <fcntl.h>
        #include <hurd/fs.h>
        
        int main (int argc, char *argv[])
        {
          file_t file;
          error_t err;
        
          if (argc != 2)
            error (1, 0, "Usage: %s file", argv[0]);
        
          file = file_name_lookup (argv[1], O_READ, 0);
          if (file == MACH_PORT_NULL)
            error (1, errno, "Looking up %s", argv[1]);
        
          printf ("Got a port to `%s'.\n", argv[1]);
        
          err = dir_mkdir (file, "boohbah", 0);
          if (err)
            error (1, err, "Making boohbah");
        
          return 0;
        }

Here are the results:


        neal@desdemona:~/build-libc/foo (0)$ ls -l
        total 12
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 a
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 b
        lrwxr-xr-x    1 neal     neal            1 Jun 21 20:34 bar -> .
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 c
        lrwxr-xr-x    1 neal     neal            0 Jun 20 22:44 foo -> 
        -rwxr-xr-x    1 neal     neal         5712 Jun 21 22:32 mkdir
        -rw-r--r--    1 neal     neal          544 Jun 21 22:32 mkdir.c
        neal@desdemona:~/build-libc/foo (0)$ ./mkdir ""
        Got a port to `'.
        neal@desdemona:~/build-libc/foo (0)$ ls -l
        total 16
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 a
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 b
        lrwxr-xr-x    1 neal     neal            1 Jun 21 20:34 bar -> .
        d---------    2 neal     neal         4096 Jun 21 22:34 boohbah
        -rw-r--r--    1 neal     neal            0 Jun 20 22:44 c
        lrwxr-xr-x    1 neal     neal            0 Jun 20 22:44 foo -> 
        -rwxr-xr-x    1 neal     neal         5712 Jun 21 22:32 mkdir
        -rw-r--r--    1 neal     neal          544 Jun 21 22:32 mkdir.c
        neal@desdemona:~/build-libc/foo (0)$ 

Seems to work fairly well in this scenario.

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