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authorTom Lane <tgl@sss.pgh.pa.us>2018-05-23 10:59:55 -0400
committerTom Lane <tgl@sss.pgh.pa.us>2018-05-23 10:59:55 -0400
commit1d96c1b91a4b7da6288ee63671a234b557ff5ccf (patch)
treed87bb1d8dc0ae7f853e33fa38759ade52a8094df /src/backend/storage/file/fd.c
parentb06d8e58b5ac257c2119312c47c4a0f233c5e0ca (diff)
Fix incorrect ordering of operations in pg_resetwal and pg_rewind.
Commit c37b3d08c dropped its added GetDataDirectoryCreatePerm call into the wrong place in pg_resetwal.c, namely after the chdir to DataDir. That broke invocations using a relative path, as reported by Tushar Ahuja. We could have left it where it was and changed the argument to be ".", but that'd result in a rather confusing error message in event of a failure, so re-ordering seems like a better solution. Similarly reorder operations in pg_rewind.c. The issue there is that it doesn't seem like a good idea to do any actual operations before the not-root check (on Unix) or the restricted token acquisition (on Windows). I don't know that this is an actual bug, but I'm definitely not convinced that it isn't, either. Assorted other code review for c37b3d08c and da9b580d8: fix some misspelled or otherwise badly worded comments, put the #include for <sys/stat.h> where it actually belongs, etc. Discussion: https://postgr.es/m/aeb9c3a7-3c3f-a57f-1a18-c8d4fcdc2a1f@enterprisedb.com
Diffstat (limited to 'src/backend/storage/file/fd.c')
-rw-r--r--src/backend/storage/file/fd.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/backend/storage/file/fd.c b/src/backend/storage/file/fd.c
index 441f18dcf56..8dd51f17674 100644
--- a/src/backend/storage/file/fd.c
+++ b/src/backend/storage/file/fd.c
@@ -3552,8 +3552,8 @@ fsync_parent_path(const char *fname, int elevel)
/*
* Create a PostgreSQL data sub-directory
*
- * The data directory itself, along with most other directories, are created at
- * initdb-time, but we do have some occations where we create directories from
+ * The data directory itself, and most of its sub-directories, are created at
+ * initdb time, but we do have some occasions when we create directories in
* the backend (CREATE TABLESPACE, for example). In those cases, we want to
* make sure that those directories are created consistently. Today, that means
* making sure that the created directory has the correct permissions, which is
@@ -3562,8 +3562,8 @@ fsync_parent_path(const char *fname, int elevel)
* Note that we also set the umask() based on what we understand the correct
* permissions to be (see file_perm.c).
*
- * For permissions other than the default mkdir() can be used directly, but be
- * sure to consider carefully such cases -- a directory with incorrect
+ * For permissions other than the default, mkdir() can be used directly, but
+ * be sure to consider carefully such cases -- a sub-directory with incorrect
* permissions in a PostgreSQL data directory could cause backups and other
* processes to fail.
*/