chmod: New module.

* lib/sys_stat.in.h (chmod): Declare when GNULIB_CHMOD is 1.
* lib/chmod.c: New file, based on lib/lchmod.c.
* m4/chmod.m4: New file, based on m4/fchmodat.m4.
* m4/sys_stat_h.m4 (gl_SYS_STAT_H): Test whether chmod is declared.
(gl_SYS_STAT_H_REQUIRE_DEFAULTS): Initialize GNULIB_CHMOD.
(gl_SYS_STAT_H_DEFAULTS): Initialize REPLACE_CHMOD.
* modules/sys_stat (Makefile.am): Substitute GNULIB_CHMOD,
REPLACE_CHMOD.
* modules/chmod: New file, based on modules/lchmod.
* doc/posix-functions/chmod.texi: Mention the new module and the
problems on IRIX and Windows.

1 files changed, 10 insertions, 5 deletions

diff --git a/doc/posix-functions/chmod.texi b/doc/posix-functions/chmod.texi
index 90175fd7b9..1288964b64 100644
--- a/doc/posix-functions/chmod.texi
+++ b/doc/posix-functions/chmod.texi
@@ -4,16 +4,21 @@
 
 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/chmod.html}
 
-Gnulib module: ---
+Gnulib module: chmod
 
 Portability problems fixed by Gnulib:
 @itemize
+@item
+This function does not fail when the file name argument ends in a slash
+and (without the slash) names a non-directory, on some platforms:
+AIX 7.2, IRIX 6.5.
+@item
+This function fails with a wrong error code (EINVAL instead of ENOTDIR)
+when the file name argument ends in a slash and (without the slash) names
+a non-directory, on some platforms:
+mingw, MSVC.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
-@item
-This function does not fail when the file name argument ends in a slash
-and (without the slash) names a non-directory, on some platforms:
-AIX 7.2.
 @end itemize