Update from Gnulib

This incorporates:
2019-09-22 Update some URLs
2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC
2019-09-15 creat: new module
2019-09-15 access: new module
2019-09-09 Add option to assume best, not worst, when cross-compiling.
* build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex:
* lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h:
* lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h:
* lib/ftoastr.c, lib/get-permissions.c:
* lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c:
* lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h:
* lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h:
* lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4:
* m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4:
* m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4:
* m4/gnulib-common.m4, m4/largefile.m4:
* m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4:
* m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4:
* m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4:
Copy from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* m4/open-slash.m4: New file, copied from Gnulib.

1 files changed, 3 insertions, 18 deletions

diff --git a/lib/open.c b/lib/open.c
index 655260572d4..4572ebf6cd2 100644
--- a/lib/open.c
+++ b/lib/open.c
@@ -94,20 +94,13 @@ open (const char *filename, int flags, ...)
 #if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and one of O_CREAT, O_WRONLY, O_RDWR
      is specified, then fail.
-     Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
-     says that
-       "A pathname that contains at least one non-slash character and that
-        ends with one or more trailing slashes shall be resolved as if a
-        single dot character ( '.' ) were appended to the pathname."
-     and
-       "The special filename dot shall refer to the directory specified by
-        its predecessor."
+     Rationale: POSIX <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html>
      If the named file already exists as a directory, then
        - if O_CREAT is specified, open() must fail because of the semantics
          of O_CREAT,
        - if O_WRONLY or O_RDWR is specified, open() must fail because POSIX
-         <http://www.opengroup.org/susv3/functions/open.html> says that it
-         fails with errno = EISDIR in this case.
+         <https://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html>
+         says that it fails with errno = EISDIR in this case.
      If the named file does not exist or does not name a directory, then
        - if O_CREAT is specified, open() must fail since open() cannot create
          directories,
@@ -171,14 +164,6 @@ open (const char *filename, int flags, ...)
 #if OPEN_TRAILING_SLASH_BUG
   /* If the filename ends in a slash and fd does not refer to a directory,
      then fail.
-     Rationale: POSIX <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
-     says that
-       "A pathname that contains at least one non-slash character and that
-        ends with one or more trailing slashes shall be resolved as if a
-        single dot character ( '.' ) were appended to the pathname."
-     and
-       "The special filename dot shall refer to the directory specified by
-        its predecessor."
      If the named file without the slash is not a directory, open() must fail
      with ENOTDIR.  */
   if (fd >= 0)