Re: FYI: rm now performs run-time check for buggy readdir

[Eric Blake]

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According to Jim Meyering on 5/13/2005 4:15 AM:
> +++ src/remove.c      13 May 2005 07:39:50 -0000      1.121
> @@ -46,16 +46,29 @@
>  #define obstack_chunk_alloc malloc
>  #define obstack_chunk_free free
>  
> -/* FIXME: if possible, use autoconf...  */
> +/* If anyone knows of another system for which unlink can never
> +   remove a directory, please report it to address@hidden
> +   The code below is slightly more efficient if it *knows* that
> +   unlink(2) cannot possibly unlink a directory.  */
>  #ifdef __GLIBC__
> -# define ROOT_CAN_UNLINK_DIRS 0
> +# define UNLINK_CAN_UNLINK_DIRS 0  /* Good!  */
>  #else
> -# define ROOT_CAN_UNLINK_DIRS 1
> +# define UNLINK_CAN_UNLINK_DIRS 1  /* Less efficient.  */
>  #endif

Cygwin (#ifdef __CYGWIN__) cannot link or unlink directories, failing with
EPERM.

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden

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