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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2012-08-23 17:25:17 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2012-08-23 17:25:17 -0400 |
| commit | fb7b6197b9ed2fe9813ccc0cb4ff548ae255d80d (patch) | |
| tree | 7d338ea2295e8928212f54de55c9ede2ae78838c /src/backend/utils | |
| parent | ebcc0158f174336fc50ad33fe4cfa642bdff64a8 (diff) | |
| download | postgresql-fb7b6197b9ed2fe9813ccc0cb4ff548ae255d80d.tar.gz postgresql-fb7b6197b9ed2fe9813ccc0cb4ff548ae255d80d.zip | |
Fix cascading privilege revoke to notice when privileges are still held.
If we revoke a grant option from some role X, but X still holds the option
via another grant, we should not recursively revoke the privilege from
role(s) Y that X had granted it to. This was supposedly fixed as one
aspect of commit 4b2dafcc0b1a579ef5daaa2728223006d1ff98e9, but I must not
have tested it, because in fact that code never worked: it forgot to shift
the grant-option bits back over when masking the bits being revoked.
Per bug #6728 from Daniel German. Back-patch to all active branches,
since this has been wrong since 8.0.
Diffstat (limited to 'src/backend/utils')
| -rw-r--r-- | src/backend/utils/adt/acl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/backend/utils/adt/acl.c b/src/backend/utils/adt/acl.c index 77322a115f1..1d6ae8b4f3e 100644 --- a/src/backend/utils/adt/acl.c +++ b/src/backend/utils/adt/acl.c @@ -1230,11 +1230,11 @@ recursive_revoke(Acl *acl, if (grantee == ownerId) return acl; - /* The grantee might still have the privileges via another grantor */ + /* The grantee might still have some grant options via another grantor */ still_has = aclmask(acl, grantee, ownerId, ACL_GRANT_OPTION_FOR(revoke_privs), ACLMASK_ALL); - revoke_privs &= ~still_has; + revoke_privs &= ~ACL_OPTION_TO_PRIVS(still_has); if (revoke_privs == ACL_NO_RIGHTS) return acl; |