[PATCH] server: the owner of a securable object should have all the standard access rights
Damjan Jovanovic
damjan.jov at gmail.com
Sat Jun 5 20:59:38 CDT 2021
Cygwin fork() fails in NtCreateSymbolicLinkObject(). We successfully
create the link but then fail to alloc_handle() with STATUS_ACCESS_DENIED,
because the requested access rights exceed what the owner is allowed.
Allow it more.
Thank you to Dmitry Timoshkov for debugging the security details from
alloc_handle() onwards.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48891
Signed-off-by: Damjan Jovanovic <damjan.jov at gmail.com>
---
dlls/advapi32/tests/security.c | 19 +++++++++++++++++--
server/token.c | 2 +-
2 files changed, 18 insertions(+), 3 deletions(-)
-------------- next part --------------
diff --git a/dlls/advapi32/tests/security.c b/dlls/advapi32/tests/security.c
index b3361795761..3f1fffda273 100644
--- a/dlls/advapi32/tests/security.c
+++ b/dlls/advapi32/tests/security.c
@@ -1076,10 +1076,25 @@ todo_wine {
SetLastError(0xdeadbeef);
rc = AccessCheck(sd, token, DELETE, &mapping, &priv_set, &priv_set_len, &granted, &status);
ok(rc, "AccessCheck error %d\n", GetLastError());
-todo_wine {
ok(status == 1, "expected 1, got %d\n", status);
ok(granted == DELETE, "expected DELETE, got %#x\n", granted);
-}
+
+ granted = 0xdeadbeef;
+ status = 0xdeadbeef;
+ SetLastError(0xdeadbeef);
+ rc = AccessCheck(sd, token, WRITE_OWNER, &mapping, &priv_set, &priv_set_len, &granted, &status);
+ ok(rc, "AccessCheck error %d\n", GetLastError());
+ ok(status == 1, "expected 1, got %d\n", status);
+ ok(granted == WRITE_OWNER, "expected WRITE_OWNER, got %#x\n", granted);
+
+ granted = 0xdeadbeef;
+ status = 0xdeadbeef;
+ SetLastError(0xdeadbeef);
+ rc = AccessCheck(sd, token, SYNCHRONIZE, &mapping, &priv_set, &priv_set_len, &granted, &status);
+ ok(rc, "AccessCheck error %d\n", GetLastError());
+ ok(status == 1, "expected 1, got %d\n", status);
+ ok(granted == SYNCHRONIZE, "expected SYNCHRONIZE, got %#x\n", granted);
+
granted = 0xdeadbeef;
status = 0xdeadbeef;
SetLastError(0xdeadbeef);
diff --git a/server/token.c b/server/token.c
index 089f1c5c61e..ad5d7cda323 100644
--- a/server/token.c
+++ b/server/token.c
@@ -1113,7 +1113,7 @@ static unsigned int token_access_check( struct token *token,
* determined here. */
if (token_sid_present( token, owner, FALSE ))
{
- current_access |= (READ_CONTROL | WRITE_DAC);
+ current_access |= (STANDARD_RIGHTS_REQUIRED | SYNCHRONIZE);
if (desired_access == current_access)
{
*granted_access = current_access;
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