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authorCorinna Vinschen <corinna@vinschen.de>2005-04-19 14:10:13 +0400
committerCorinna Vinschen <corinna@vinschen.de>2005-04-19 14:10:13 +0400
commit28f2a08860aaa26c5cd04d3fd059a3f35363d668 (patch)
tree7ce546460aada050a8a224165c2e692a498e5651 /winsup
parentd02099f2396a189ec56227b554b396178013d0b8 (diff)
* security.cc (alloc_sd): Remove DELETE bit from user's ACE if
allow_traverse is set.
Diffstat (limited to 'winsup')
-rw-r--r--winsup/cygwin/ChangeLog5
-rw-r--r--winsup/cygwin/security.cc8
2 files changed, 13 insertions, 0 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index c5b5e6907..54bfc8df9 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,5 +1,10 @@
2005-04-19 Corinna Vinschen <corinna@vinschen.de>
+ * security.cc (alloc_sd): Remove DELETE bit from user's ACE if
+ allow_traverse is set.
+
+2005-04-19 Corinna Vinschen <corinna@vinschen.de>
+
* cygwin.din (pselect): Export.
* select.cc (pselect): New function.
* include/cygwin/version.h: Bump API minor number.
diff --git a/winsup/cygwin/security.cc b/winsup/cygwin/security.cc
index e2a9426a4..5d7930c38 100644
--- a/winsup/cygwin/security.cc
+++ b/winsup/cygwin/security.cc
@@ -1553,6 +1553,14 @@ alloc_sd (__uid32_t uid, __gid32_t gid, int attribute,
/* Construct allow attribute for owner. */
DWORD owner_allow = STANDARD_RIGHTS_ALL
| FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA;
+ /* This has nothing to do with traverse checking in the first place, but
+ since traverse checking is the setting which switches to POSIX-like
+ permission rules, the below is all too similar. Removing the delete
+ bit for a file or directory results in checking the parent directories'
+ ACL, if the current user has the FILE_DELETE_CHILD bit set. This is
+ how it is on POSIX systems. */
+ if (allow_traverse)
+ owner_allow &= ~DELETE;
if (attribute & S_IRUSR)
owner_allow |= FILE_GENERIC_READ;
if (attribute & S_IWUSR)