diff options
Diffstat (limited to 'winsup/cygwin/grp.cc')
| -rw-r--r-- | winsup/cygwin/grp.cc | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/winsup/cygwin/grp.cc b/winsup/cygwin/grp.cc index 648d5a3da..083b9db75 100644 --- a/winsup/cygwin/grp.cc +++ b/winsup/cygwin/grp.cc @@ -341,9 +341,15 @@ getgroups32 (int gidsetsize, __gid32_t *grouplist, __gid32_t gid, if (group_state <= initializing) read_etc_group (); - if (allow_ntsec && - strcasematch (username, cygheap->user.name ()) && - OpenProcessToken (hMainProc, TOKEN_QUERY, &hToken)) + if (allow_ntsec) + { + /* If impersonated, use impersonation token. */ + if (cygheap->user.issetuid ()) + hToken = cygheap->user.token; + else if (!OpenProcessToken (hMainProc, TOKEN_QUERY, &hToken)) + hToken = NULL; + } + if (hToken) { if (GetTokenInformation (hToken, TokenGroups, NULL, 0, &size) || GetLastError () == ERROR_INSUFFICIENT_BUFFER) @@ -375,7 +381,8 @@ getgroups32 (int gidsetsize, __gid32_t *grouplist, __gid32_t gid, } else debug_printf ("%d = GetTokenInformation(NULL) %E", size); - CloseHandle (hToken); + if (hToken != cygheap->user.token) + CloseHandle (hToken); if (cnt) return cnt; } |