Re: [PATCH] fchmodat: Use /proc on Cygwin

[Bruno Haible]

Ken Brown wrote:
> diff --git a/lib/fchmodat.c b/lib/fchmodat.c
> index 895016860..eee0a1c56 100644
> --- a/lib/fchmodat.c
> +++ b/lib/fchmodat.c
> @@ -98,7 +98,7 @@ fchmodat (int dir, char const *file, mode_t mode, int flags)
>            return -1;
>          }
>  
> -#   if defined __linux__ || defined __ANDROID__
> +#   if defined __linux__ || defined __ANDROID__ || defined __CYGWIN__
>        static char const fmt[] = "/proc/self/fd/%d";
>        char buf[sizeof fmt - sizeof "%d" + INT_BUFSIZE_BOUND (int)];
>        sprintf (buf, fmt, fd);
> 

So, chmod ("/proc/self/fd/n") works on Cygwin like on Linux. Then, we can make
the same change also in lchmod.c.


2020-07-23  Bruno Haible  <bruno@clisp.org>

        lchmod: Use /proc on Cygwin.
        * lib/lchmod.c (lchmod): Use /proc on Cygwin.

diff --git a/lib/lchmod.c b/lib/lchmod.c
index e113211..77a0060 100644
--- a/lib/lchmod.c
+++ b/lib/lchmod.c
@@ -76,7 +76,7 @@ lchmod (char const *file, mode_t mode)
       return -1;
     }
 
-# if defined __linux__ || defined __ANDROID__
+# if defined __linux__ || defined __ANDROID__ || defined __CYGWIN__
   static char const fmt[] = "/proc/self/fd/%d";
   char buf[sizeof fmt - sizeof "%d" + INT_BUFSIZE_BOUND (int)];
   sprintf (buf, fmt, fd);