diff options
Diffstat (limited to 'winsup/cygwin/path.cc')
| -rw-r--r-- | winsup/cygwin/path.cc | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc index 1bf47b437..1f4f8286a 100644 --- a/winsup/cygwin/path.cc +++ b/winsup/cygwin/path.cc @@ -4612,142 +4612,6 @@ out: return buf; } -int etc::curr_ix = 0; -/* Note that the first elements of the below arrays are unused */ -bool etc::change_possible[MAX_ETC_FILES + 1]; -OBJECT_ATTRIBUTES etc::fn[MAX_ETC_FILES + 1]; -LARGE_INTEGER etc::last_modified[MAX_ETC_FILES + 1]; - -int -etc::init (int n, POBJECT_ATTRIBUTES attr) -{ - if (n > 0) - /* ok */; - else if (++curr_ix <= MAX_ETC_FILES) - n = curr_ix; - else - api_fatal ("internal error"); - - fn[n] = *attr; - change_possible[n] = false; - test_file_change (n); - paranoid_printf ("fn[%d] %S, curr_ix %d", n, fn[n].ObjectName, curr_ix); - return n; -} - -bool -etc::test_file_change (int n) -{ - NTSTATUS status; - FILE_NETWORK_OPEN_INFORMATION fnoi; - bool res; - - status = NtQueryFullAttributesFile (&fn[n], &fnoi); - if (!NT_SUCCESS (status)) - { - res = status != STATUS_OBJECT_NAME_NOT_FOUND; - memset (last_modified + n, 0, sizeof (last_modified[n])); - debug_printf ("NtQueryFullAttributesFile (%S) failed, %y", - fn[n].ObjectName, status); - } - else - { - res = CompareFileTime ((FILETIME *) &fnoi.LastWriteTime, - (FILETIME *) last_modified + n) > 0; - last_modified[n].QuadPart = fnoi.LastWriteTime.QuadPart; - } - - paranoid_printf ("fn[%d] %S res %d", n, fn[n].ObjectName, res); - return res; -} - -bool -etc::dir_changed (int n) -{ - /* io MUST be static because NtNotifyChangeDirectoryFile works asynchronously. - It may write into io after the function has left, which may result in all - sorts of stack corruption. */ - static IO_STATUS_BLOCK io NO_COPY; - static HANDLE changed_h NO_COPY; - - if (!change_possible[n]) - { - NTSTATUS status; - - if (!changed_h) - { - OBJECT_ATTRIBUTES attr; - - path_conv dir ("/etc"); - status = NtOpenFile (&changed_h, SYNCHRONIZE | FILE_LIST_DIRECTORY, - dir.get_object_attr (attr, sec_none_nih), &io, - FILE_SHARE_VALID_FLAGS, FILE_DIRECTORY_FILE); - if (!NT_SUCCESS (status)) - { -#ifdef DEBUGGING - system_printf ("NtOpenFile (%S) failed, %y", - dir.get_nt_native_path (), status); -#endif - changed_h = INVALID_HANDLE_VALUE; - } - else - { - status = NtNotifyChangeDirectoryFile (changed_h, NULL, NULL, - NULL, &io, NULL, 0, - FILE_NOTIFY_CHANGE_LAST_WRITE - | FILE_NOTIFY_CHANGE_FILE_NAME, - FALSE); - if (!NT_SUCCESS (status)) - { -#ifdef DEBUGGING - system_printf ("NtNotifyChangeDirectoryFile (1) failed, %y", - status); -#endif - NtClose (changed_h); - changed_h = INVALID_HANDLE_VALUE; - } - } - memset (change_possible, true, sizeof (change_possible)); - } - - if (changed_h == INVALID_HANDLE_VALUE) - change_possible[n] = true; - else if (WaitForSingleObject (changed_h, 0) == WAIT_OBJECT_0) - { - status = NtNotifyChangeDirectoryFile (changed_h, NULL, NULL, - NULL, &io, NULL, 0, - FILE_NOTIFY_CHANGE_LAST_WRITE - | FILE_NOTIFY_CHANGE_FILE_NAME, - FALSE); - if (!NT_SUCCESS (status)) - { -#ifdef DEBUGGING - system_printf ("NtNotifyChangeDirectoryFile (2) failed, %y", - status); -#endif - NtClose (changed_h); - changed_h = INVALID_HANDLE_VALUE; - } - memset (change_possible, true, sizeof change_possible); - } - } - - paranoid_printf ("fn[%d] %S change_possible %d", - n, fn[n].ObjectName, change_possible[n]); - return change_possible[n]; -} - -bool -etc::file_changed (int n) -{ - bool res = false; - if (dir_changed (n) && test_file_change (n)) - res = true; - change_possible[n] = false; /* Change is no longer possible */ - paranoid_printf ("fn[%d] %S res %d", n, fn[n].ObjectName, res); - return res; -} - /* No need to be reentrant or thread-safe according to SUSv3. / and \\ are treated equally. Leading drive specifiers are kept intact as far as it makes sense. Everything else is |