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Cygwin: get/set security descriptors using FILE_OPEN_NO_RECALL

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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>
This commit is contained in:
Corinna Vinschen 2024-03-08 21:30:57 +01:00
parent c1cf14a871
commit 66138cbee4
1 changed files with 6 additions and 3 deletions
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9
winsup/cygwin/sec/base.cc
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@ -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))