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* [newlib-cygwin/cygwin-3_5-branch] Cygwin: get/set security descriptors using FILE_OPEN_NO_RECALL
@ 2024-03-11 16:21 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2024-03-11 16:21 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=66138cbee4ed784b4cafc00533ebb74b6cdbfff1
commit 66138cbee4ed784b4cafc00533ebb74b6cdbfff1
Author: Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Fri Mar 8 21:30:57 2024 +0100
Commit: Corinna Vinschen <corinna@vinschen.de>
CommitDate: Mon Mar 11 15:29:51 2024 +0100
Cygwin: get/set security descriptors using FILE_OPEN_NO_RECALL
Add FILE_OPEN_NO_RECALL to NtOpenFile calls trying to fetch
or write file security descriptors so as not to recall them
from offline storage inadvertently.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
winsup/cygwin/sec/base.cc | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/winsup/cygwin/sec/base.cc b/winsup/cygwin/sec/base.cc
index 8b04b40b4943..0fc8699bfc9e 100644
--- a/winsup/cygwin/sec/base.cc
+++ b/winsup/cygwin/sec/base.cc
@@ -65,7 +65,8 @@ get_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd,
fh ? pc.init_reopen_attr (attr, fh)
: pc.get_object_attr (attr, sec_none_nih),
&io, FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
+ FILE_OPEN_NO_RECALL
+ | FILE_OPEN_FOR_BACKUP_INTENT
| pc.is_known_reparse_point ()
? FILE_OPEN_REPARSE_POINT : 0);
if (!NT_SUCCESS (status))
@@ -129,7 +130,8 @@ get_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd,
NULL, NULL);
status = NtOpenFile (&fh, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
+ FILE_OPEN_NO_RECALL
+ | FILE_OPEN_FOR_BACKUP_INTENT
| FILE_OPEN_REPARSE_POINT);
if (!NT_SUCCESS (status))
{
@@ -234,7 +236,8 @@ set_file_sd (HANDLE fh, path_conv &pc, security_descriptor &sd, bool is_chown)
: pc.get_object_attr (attr, sec_none_nih),
&io,
FILE_SHARE_VALID_FLAGS,
- FILE_OPEN_FOR_BACKUP_INTENT
+ FILE_OPEN_NO_RECALL
+ | FILE_OPEN_FOR_BACKUP_INTENT
| pc.is_known_reparse_point ()
? FILE_OPEN_REPARSE_POINT : 0);
if (!NT_SUCCESS (status))
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