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Diffstat (limited to 'source4/nsswitch/winbindd_dual.c')
| -rw-r--r-- | source4/nsswitch/winbindd_dual.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/source4/nsswitch/winbindd_dual.c b/source4/nsswitch/winbindd_dual.c deleted file mode 100644 index 207757bcea..0000000000 --- a/source4/nsswitch/winbindd_dual.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - Winbind background daemon - - Copyright (C) Andrew Tridgell 2002 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -/* - the idea of the optional dual daemon mode is ot prevent slow domain - responses from clagging up the rest of the system. When in dual - daemon mode winbindd always responds to requests from cache if the - request is in cache, and if the cached answer is stale then it asks - the "dual daemon" to update the cache for that request - - */ - -#include "winbindd.h" - -#undef DBGC_CLASS -#define DBGC_CLASS DBGC_WINBIND - -extern BOOL opt_dual_daemon; -BOOL background_process = False; -int dual_daemon_pipe = -1; - - -/* a list of requests ready to be sent to the dual daemon */ -struct dual_list { - struct dual_list *next; - char *data; - int length; - int offset; -}; - -static struct dual_list *dual_list; -static struct dual_list *dual_list_end; - -/* - setup a select() including the dual daemon pipe - */ -int dual_select_setup(fd_set *fds, int maxfd) -{ - if (dual_daemon_pipe == -1 || - !dual_list) { - return maxfd; - } - - FD_SET(dual_daemon_pipe, fds); - if (dual_daemon_pipe > maxfd) { - maxfd = dual_daemon_pipe; - } - return maxfd; -} - - -/* - a hook called from the main winbindd select() loop to handle writes - to the dual daemon pipe -*/ -void dual_select(fd_set *fds) -{ - int n; - - if (dual_daemon_pipe == -1 || - !dual_list || - !FD_ISSET(dual_daemon_pipe, fds)) { - return; - } - - n = sys_write(dual_daemon_pipe, - &dual_list->data[dual_list->offset], - dual_list->length - dual_list->offset); - - if (n <= 0) { - /* the pipe is dead! fall back to normal operation */ - dual_daemon_pipe = -1; - return; - } - - dual_list->offset += n; - - if (dual_list->offset == dual_list->length) { - struct dual_list *next; - next = dual_list->next; - free(dual_list->data); - free(dual_list); - dual_list = next; - if (!dual_list) { - dual_list_end = NULL; - } - } -} - -/* - send a request to the background daemon - this is called for stale cached entries -*/ -void dual_send_request(struct winbindd_cli_state *state) -{ - struct dual_list *list; - - if (!background_process) return; - - list = malloc(sizeof(*list)); - if (!list) return; - - list->next = NULL; - list->data = memdup(&state->request, sizeof(state->request)); - list->length = sizeof(state->request); - list->offset = 0; - - if (!dual_list_end) { - dual_list = list; - dual_list_end = list; - } else { - dual_list_end->next = list; - dual_list_end = list; - } - - background_process = False; -} - - -/* -the main dual daemon -*/ -void do_dual_daemon(void) -{ - int fdpair[2]; - struct winbindd_cli_state state; - - if (pipe(fdpair) != 0) { - return; - } - - ZERO_STRUCT(state); - state.pid = getpid(); - - dual_daemon_pipe = fdpair[1]; - state.sock = fdpair[0]; - - if (fork() != 0) { - close(fdpair[0]); - return; - } - close(fdpair[1]); - - if (!winbind_setup_common()) - _exit(0); - - dual_daemon_pipe = -1; - opt_dual_daemon = False; - - while (1) { - /* free up any talloc memory */ - lp_talloc_free(); - main_loop_talloc_free(); - - /* fetch a request from the main daemon */ - winbind_client_read(&state); - - if (state.finished) { - /* we lost contact with our parent */ - exit(0); - } - - /* process full rquests */ - if (state.read_buf_len == sizeof(state.request)) { - DEBUG(4,("dual daemon request %d\n", (int)state.request.cmd)); - - /* special handling for the stateful requests */ - switch (state.request.cmd) { - case WINBINDD_GETPWENT: - winbindd_setpwent(&state); - break; - - case WINBINDD_GETGRENT: - case WINBINDD_GETGRLST: - winbindd_setgrent(&state); - break; - default: - break; - } - - winbind_process_packet(&state); - SAFE_FREE(state.response.extra_data); - - free_getent_state(state.getpwent_state); - free_getent_state(state.getgrent_state); - state.getpwent_state = NULL; - state.getgrent_state = NULL; - } - } -} - |