Replace pgwin32_is_junction() with lstat().
Now that lstat() reports junction points with S_IFLNK/S_ISLINK(), and
unlink() can unlink them, there is no need for conditional code for
Windows in a few places. That was expressed by testing for WIN32 or
S_ISLNK, which we can now constant-fold.
The coding around pgwin32_is_junction() was a bit suspect anyway, as we
never checked for errors, and we also know that errors can be spuriously
reported because of transient sharing violations on this OS. The
lstat()-based code has handling for that.
This also reverts 4fc6b6ee on master only. That was done because
lstat() didn't previously work for symlinks (junction points), but now
it does.
Tested-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://postgr.es/m/CA%2BhUKGLfOOeyZpm5ByVcAt7x5Pn-%3DxGRNCvgiUPVVzjFLtnY0w%40mail.gmail.com
(cherry picked from commit 5fc88c5d53e43fa7dcea93499d230a0bf70f4f77)
Author: Thomas Munro <tmunro@postgresql.org>
Author: Alexandra Wang <alexandra.wang.oss@gmail.com>
Branch
------
REL_15_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/f95ad555de5623588bcc6e48fe8a3fd50d721216
Author: Thomas Munro <tmunro@postgresql.org>
Modified Files
--------------
src/backend/backup/basebackup.c | 12 +-----------
src/backend/commands/tablespace.c | 7 +------
src/backend/storage/file/fd.c | 5 -----
src/backend/utils/adt/misc.c | 7 -------
src/bin/pg_checksums/pg_checksums.c | 4 ----
src/bin/pg_rewind/file_ops.c | 4 ----
src/common/file_utils.c | 23 -----------------------
src/include/port.h | 1 -
src/include/port/win32_port.h | 1 -
src/port/dirmod.c | 16 ----------------
10 files changed, 2 insertions(+), 78 deletions(-)
