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Code Issues Releases Activity

limit tablespace permissions kludge to only PG11

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This commit is contained in:
Grigory Smolkin 2019-05-27 18:22:25 +03:00
parent 64d5d32fff
commit ca02ecade0
1 changed files with 35 additions and 27 deletions
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62
src/dir.c
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@ -939,6 +939,7 @@ opt_externaldir_map(ConfigOption *opt, const char *arg)
* Enforce permissions from backup_content.control. The only
* problem now is with PGDATA itself.
* TODO: we must preserve PGDATA permissions somewhere. Is it actually a problem?
* Shouldn`t starting postgres force correct permissions on PGDATA?
*
* TODO: symlink handling. If user located symlink in PG_TBLSPC_DIR, it will
* be restored as directory.
@ -949,35 +950,9 @@ create_data_directories(parray *dest_files, const char *data_dir, const char *ba
{
int i;
parray *links = NULL;
mode_t pg_tablespace_mode = 0;
mode_t pg_tablespace_mode = DIR_PERMISSION;
char to_path[MAXPGPATH];
/* Ugly: get PG_TBLSPC_DIR pemission mask.
* We will use it to set permissions for tablespace directories.
*/
for (i = 0; i < parray_num(dest_files); i++)
{
pgFile *file = (pgFile *) parray_get(dest_files, i);
if (!S_ISDIR(file->mode))
continue;
/* skip external directory content */
if (file->external_dir_num != 0)
continue;
/* look for 'pg_tblspc' directory */
if (strcmp(file->rel_path, PG_TBLSPC_DIR) == 0)
{
pg_tablespace_mode = file->mode;
break;
}
}
/* sanity */
if (!pg_tablespace_mode)
pg_tablespace_mode = DIR_PERMISSION;
/* get tablespace map */
if (extract_tablespaces)
{
@ -987,6 +962,39 @@ create_data_directories(parray *dest_files, const char *data_dir, const char *ba
parray_qsort(links, pgFileCompareName);
}
/*
* We have no idea about tablespace permission
* For PG < 11 we can just force default permissions.
*/
#if PG_VERSION_NUM >= 110000
if (links)
{
/* For PG>=11 we use temp kludge: trust permissions on 'pg_tblspc'
* and force them on every tablespace.
* TODO: remove kludge and ask data_directory_mode
* at the start of backup.
*/
for (i = 0; i < parray_num(dest_files); i++)
{
pgFile *file = (pgFile *) parray_get(dest_files, i);
if (!S_ISDIR(file->mode))
continue;
/* skip external directory content */
if (file->external_dir_num != 0)
continue;
/* look for 'pg_tblspc' directory */
if (strcmp(file->rel_path, PG_TBLSPC_DIR) == 0)
{
pg_tablespace_mode = file->mode;
break;
}
}
}
#endif
/*
* We iterate over dest_files and for every directory with parent 'pg_tblspc'
* we must lookup this directory name in tablespace map.