diff options
| author | Stephen Frost <sfrost@snowman.net> | 2018-04-07 17:45:39 -0400 |
|---|---|---|
| committer | Stephen Frost <sfrost@snowman.net> | 2018-04-07 17:45:39 -0400 |
| commit | c37b3d08ca6873f9d4eaf24c72a90a550970cbb8 (patch) | |
| tree | a92cd4f79d20c4d002bd1f41af8bfe9507d92636 /src/backend/utils/init/globals.c | |
| parent | da9b580d89903fee871cf54845ffa2b26bda2e11 (diff) | |
| download | postgresql-c37b3d08ca6873f9d4eaf24c72a90a550970cbb8.tar.gz postgresql-c37b3d08ca6873f9d4eaf24c72a90a550970cbb8.zip | |
Allow group access on PGDATA
Allow the cluster to be optionally init'd with read access for the
group.
This means a relatively non-privileged user can perform a backup of the
cluster without requiring write privileges, which enhances security.
The mode of PGDATA is used to determine whether group permissions are
enabled for directory and file creates. This method was chosen as it's
simple and works well for the various utilities that write into PGDATA.
Changing the mode of PGDATA manually will not automatically change the
mode of all the files contained therein. If the user would like to
enable group access on an existing cluster then changing the mode of all
the existing files will be required. Note that pg_upgrade will
automatically change the mode of all migrated files if the new cluster
is init'd with the -g option.
Tests are included for the backend and all the utilities which operate
on the PG data directory to ensure that the correct mode is set based on
the data directory permissions.
Author: David Steele <david@pgmasters.net>
Reviewed-By: Michael Paquier, with discussion amongst many others.
Discussion: https://postgr.es/m/ad346fe6-b23e-59f1-ecb7-0e08390ad629%40pgmasters.net
Diffstat (limited to 'src/backend/utils/init/globals.c')
| -rw-r--r-- | src/backend/utils/init/globals.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c index c1f0441b081..0a3163398f3 100644 --- a/src/backend/utils/init/globals.c +++ b/src/backend/utils/init/globals.c @@ -16,8 +16,11 @@ * *------------------------------------------------------------------------- */ +#include <sys/stat.h> + #include "postgres.h" +#include "common/file_perm.h" #include "libpq/libpq-be.h" #include "libpq/pqcomm.h" #include "miscadmin.h" @@ -59,6 +62,12 @@ struct Latch *MyLatch; */ char *DataDir = NULL; +/* + * Mode of the data directory. The default is 0700 but may it be changed in + * checkDataDir() to 0750 if the data directory actually has that mode. + */ +int data_directory_mode = PG_DIR_MODE_OWNER; + char OutputFileName[MAXPGPATH]; /* debugging output file */ char my_exec_path[MAXPGPATH]; /* full path to my executable */ |