diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2016-06-27 18:56:16 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2016-06-27 18:56:16 +0300 |
| commit | ba58e5f20ce9326ceb30baa461b53546acec9333 (patch) | |
| tree | df0c99b92205683ec01606fd58f922d0d07259c2 /winsup/cygwin/fhandler_process.cc | |
| parent | d21b63594cf4b58fb2c79608bccd0950dd5233cf (diff) | |
Use PROCESS/THREAD_QUERY_LIMITED_INFORMATION where appropriate
Using PROCESS/THREAD_QUERY_INFORMATION may limit the number of
processes/threads we can inspect depending on their integrity level.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diffstat (limited to 'winsup/cygwin/fhandler_process.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_process.cc | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/winsup/cygwin/fhandler_process.cc b/winsup/cygwin/fhandler_process.cc index f92decd50..9730fa768 100644 --- a/winsup/cygwin/fhandler_process.cc +++ b/winsup/cygwin/fhandler_process.cc @@ -702,7 +702,8 @@ struct thread_info free (buf); return; } - proc = (PSYSTEM_PROCESS_INFORMATION) ((PBYTE) proc + proc->NextEntryOffset); + proc = (PSYSTEM_PROCESS_INFORMATION) ((PBYTE) proc + + proc->NextEntryOffset); } thread = proc->Threads; for (ULONG i = 0; i < proc->NumberOfThreads; ++i) @@ -711,8 +712,9 @@ struct thread_info TEB teb; HANDLE thread_h; - if (!(thread_h = OpenThread (THREAD_QUERY_INFORMATION, FALSE, - (ULONG) (ULONG_PTR) thread[i].ClientId.UniqueThread))) + thread_h = OpenThread (THREAD_QUERY_LIMITED_INFORMATION, FALSE, + (ULONG) (ULONG_PTR) thread[i].ClientId.UniqueThread); + if (!thread_h) continue; status = NtQueryInformationThread (thread_h, ThreadBasicInformation, &tbi, sizeof tbi, NULL); @@ -722,7 +724,8 @@ struct thread_info region *r = (region *) malloc (sizeof (region)); if (r) { - *r = (region) { regions, (ULONG) (ULONG_PTR) thread[i].ClientId.UniqueThread, + *r = (region) { regions, + (ULONG) (ULONG_PTR) thread[i].ClientId.UniqueThread, (char *) tbi.TebBaseAddress, (char *) tbi.TebBaseAddress + 2 * wincap.page_size (), @@ -792,8 +795,8 @@ static off_t format_process_maps (void *data, char *&destbuf) { _pinfo *p = (_pinfo *) data; - HANDLE proc = OpenProcess (PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, - FALSE, p->dwProcessId); + HANDLE proc = OpenProcess (PROCESS_QUERY_LIMITED_INFORMATION + | PROCESS_VM_READ, FALSE, p->dwProcessId); if (!proc) return 0; @@ -1075,7 +1078,7 @@ format_process_stat (void *data, char *&destbuf) QUOTA_LIMITS ql; SYSTEM_TIMEOFDAY_INFORMATION stodi; SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION spt; - hProcess = OpenProcess (PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, + hProcess = OpenProcess (PROCESS_QUERY_LIMITED_INFORMATION | PROCESS_VM_READ, FALSE, p->dwProcessId); if (hProcess != NULL) { |