]>
Commit | Line | Data |
---|---|---|
f449bfef RC |
1 | /* cygserver.cc |
2 | ||
f449bfef RC |
3 | Written by Egor Duda <deo@logos-m.ru> |
4 | ||
1c001dd2 | 5 | This file is part of Cygwin. |
f449bfef | 6 | |
1c001dd2 CS |
7 | This software is a copyrighted work licensed under the terms of the |
8 | Cygwin license. Please consult the file "CYGWIN_LICENSE" for | |
9 | details. */ | |
10 | ||
282113ba | 11 | #ifdef __OUTSIDE_CYGWIN__ |
1c001dd2 | 12 | #include "woutsup.h" |
f449bfef | 13 | |
f449bfef | 14 | #include <sys/types.h> |
1c001dd2 CS |
15 | |
16 | #include <assert.h> | |
1dcd520b | 17 | #include <errno.h> |
1c001dd2 | 18 | #include <ctype.h> |
1c001dd2 | 19 | #include <getopt.h> |
f449bfef | 20 | #include <signal.h> |
1c001dd2 | 21 | #include <stdio.h> |
59a2339f | 22 | #include <stdlib.h> |
1c001dd2 CS |
23 | #include <string.h> |
24 | #include <unistd.h> | |
f449bfef | 25 | |
1c001dd2 | 26 | #include "cygwin_version.h" |
f449bfef | 27 | |
56797078 | 28 | #include "cygserver.h" |
282113ba CV |
29 | #include "process.h" |
30 | #include "transport.h" | |
f449bfef | 31 | |
282113ba CV |
32 | #include "cygserver_ipc.h" |
33 | #include "cygserver_msg.h" | |
34 | #include "cygserver_sem.h" | |
1c001dd2 | 35 | |
282113ba | 36 | #define DEF_CONFIG_FILE "" SYSCONFDIR "/cygserver.conf" |
1c001dd2 | 37 | |
2d015bd6 | 38 | #define SERVER_VERSION "1.20" |
1c001dd2 CS |
39 | |
40 | GENERIC_MAPPING access_mapping; | |
41 | ||
282113ba | 42 | static bool |
f449bfef RC |
43 | setup_privileges () |
44 | { | |
45 | BOOL rc, ret_val; | |
46 | HANDLE hToken = NULL; | |
47 | TOKEN_PRIVILEGES sPrivileges; | |
48 | ||
1c001dd2 | 49 | rc = OpenProcessToken (GetCurrentProcess () , TOKEN_ALL_ACCESS , &hToken) ; |
73ea29f4 | 50 | if (!rc) |
f449bfef | 51 | { |
61522196 | 52 | debug ("error opening process token (err %u)", GetLastError ()); |
282113ba | 53 | return false; |
f449bfef | 54 | } |
73ea29f4 CF |
55 | rc = LookupPrivilegeValue (NULL, SE_DEBUG_NAME, &sPrivileges.Privileges[0].Luid); |
56 | if (!rc) | |
f449bfef | 57 | { |
61522196 | 58 | debug ("error getting privilege luid (err %u)", GetLastError ()); |
282113ba | 59 | ret_val = false; |
f449bfef RC |
60 | goto out; |
61 | } | |
62 | sPrivileges.PrivilegeCount = 1 ; | |
63 | sPrivileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED ; | |
73ea29f4 CF |
64 | rc = AdjustTokenPrivileges (hToken, FALSE, &sPrivileges, 0, NULL, NULL) ; |
65 | if (!rc) | |
f449bfef | 66 | { |
61522196 | 67 | debug ("error adjusting privilege level. (err %u)", GetLastError ()); |
282113ba | 68 | ret_val = false; |
f449bfef RC |
69 | goto out; |
70 | } | |
71 | ||
72 | access_mapping.GenericRead = FILE_READ_DATA; | |
73 | access_mapping.GenericWrite = FILE_WRITE_DATA; | |
74 | access_mapping.GenericExecute = 0; | |
75 | access_mapping.GenericAll = FILE_READ_DATA | FILE_WRITE_DATA; | |
76 | ||
282113ba | 77 | ret_val = true; |
f449bfef RC |
78 | |
79 | out: | |
73ea29f4 | 80 | CloseHandle (hToken); |
f449bfef RC |
81 | return ret_val; |
82 | } | |
83 | ||
84 | int | |
85 | check_and_dup_handle (HANDLE from_process, HANDLE to_process, | |
86 | HANDLE from_process_token, | |
73ea29f4 CF |
87 | DWORD access, |
88 | HANDLE from_handle, | |
1c001dd2 | 89 | HANDLE *to_handle_ptr, BOOL bInheritHandle = FALSE) |
f449bfef RC |
90 | { |
91 | HANDLE local_handle = NULL; | |
92 | int ret_val = EACCES; | |
7131554a CV |
93 | char sd_buf [1024]; |
94 | PSECURITY_DESCRIPTOR sd = (PSECURITY_DESCRIPTOR) &sd_buf; | |
95 | DWORD bytes_needed; | |
96 | PRIVILEGE_SET ps; | |
97 | DWORD ps_len = sizeof (ps); | |
98 | BOOL status; | |
f449bfef RC |
99 | |
100 | if (from_process != GetCurrentProcess ()) | |
73ea29f4 | 101 | { |
1c001dd2 CS |
102 | if (!DuplicateHandle (from_process, from_handle, |
103 | GetCurrentProcess (), &local_handle, | |
104 | 0, bInheritHandle, | |
105 | DUPLICATE_SAME_ACCESS)) | |
106 | { | |
61522196 CV |
107 | log (LOG_ERR, "error getting handle(%p) to server (err %u)", |
108 | from_handle, GetLastError ()); | |
1c001dd2 CS |
109 | goto out; |
110 | } | |
111 | } else | |
112 | local_handle = from_handle; | |
f449bfef | 113 | |
7131554a CV |
114 | if (!GetKernelObjectSecurity (local_handle, |
115 | (OWNER_SECURITY_INFORMATION | |
116 | | GROUP_SECURITY_INFORMATION | |
117 | | DACL_SECURITY_INFORMATION), | |
118 | sd, sizeof (sd_buf), &bytes_needed)) | |
f449bfef | 119 | { |
61522196 | 120 | log (LOG_ERR, "error getting handle SD (err %u)", GetLastError ()); |
7131554a CV |
121 | goto out; |
122 | } | |
f449bfef | 123 | |
7131554a | 124 | MapGenericMask (&access, &access_mapping); |
f449bfef | 125 | |
7131554a CV |
126 | if (!AccessCheck (sd, from_process_token, access, &access_mapping, |
127 | &ps, &ps_len, &access, &status)) | |
128 | { | |
61522196 | 129 | log (LOG_ERR, "error checking access rights (err %u)", GetLastError ()); |
7131554a CV |
130 | goto out; |
131 | } | |
f449bfef | 132 | |
7131554a CV |
133 | if (!status) |
134 | { | |
135 | log (LOG_ERR, "access to object denied"); | |
136 | goto out; | |
f449bfef RC |
137 | } |
138 | ||
139 | if (!DuplicateHandle (from_process, from_handle, | |
73ea29f4 CF |
140 | to_process, to_handle_ptr, |
141 | access, bInheritHandle, 0)) | |
f449bfef | 142 | { |
61522196 | 143 | log (LOG_ERR, "error getting handle to client (err %u)", GetLastError ()); |
f449bfef RC |
144 | goto out; |
145 | } | |
1c001dd2 | 146 | |
282113ba | 147 | debug ("Duplicated %p to %p", from_handle, *to_handle_ptr); |
f449bfef RC |
148 | |
149 | ret_val = 0; | |
73ea29f4 | 150 | |
1c001dd2 | 151 | out: |
f449bfef RC |
152 | if (local_handle && from_process != GetCurrentProcess ()) |
153 | CloseHandle (local_handle); | |
154 | ||
155 | return (ret_val); | |
156 | } | |
157 | ||
1c001dd2 CS |
158 | /* |
159 | * client_request_attach_tty::serve () | |
160 | */ | |
f449bfef RC |
161 | |
162 | void | |
1c001dd2 CS |
163 | client_request_attach_tty::serve (transport_layer_base *const conn, |
164 | process_cache *) | |
f449bfef | 165 | { |
1c001dd2 CS |
166 | assert (conn); |
167 | ||
168 | assert (!error_code ()); | |
f449bfef | 169 | |
1c001dd2 | 170 | if (msglen () != sizeof (req)) |
f449bfef | 171 | { |
282113ba | 172 | log (LOG_ERR, "bad request body length: expecting %lu bytes, got %lu", |
1c001dd2 CS |
173 | sizeof (req), msglen ()); |
174 | error_code (EINVAL); | |
175 | msglen (0); | |
176 | return; | |
f449bfef RC |
177 | } |
178 | ||
1c001dd2 | 179 | msglen (0); // Until we fill in some fields. |
73ea29f4 | 180 | |
681bb2f7 | 181 | debug ("pid %d:(%p,%p) -> pid %d", req.master_pid, req.from_master, |
282113ba | 182 | req.to_master, req.pid); |
f449bfef | 183 | |
681bb2f7 | 184 | debug ("opening process %d", req.master_pid); |
f449bfef | 185 | |
1c001dd2 CS |
186 | const HANDLE from_process_handle = |
187 | OpenProcess (PROCESS_DUP_HANDLE, FALSE, req.master_pid); | |
188 | ||
189 | if (!from_process_handle) | |
f449bfef | 190 | { |
61522196 | 191 | log (LOG_ERR, "error opening `from' process (err %u)", GetLastError ()); |
1c001dd2 CS |
192 | error_code (EACCES); |
193 | return; | |
f449bfef RC |
194 | } |
195 | ||
681bb2f7 | 196 | debug ("opening process %d", req.pid); |
1c001dd2 CS |
197 | |
198 | const HANDLE to_process_handle = | |
199 | OpenProcess (PROCESS_DUP_HANDLE, FALSE, req.pid); | |
200 | ||
201 | if (!to_process_handle) | |
f449bfef | 202 | { |
61522196 | 203 | log (LOG_ERR, "error opening `to' process (err %u)", GetLastError ()); |
1c001dd2 CS |
204 | CloseHandle (from_process_handle); |
205 | error_code (EACCES); | |
206 | return; | |
f449bfef RC |
207 | } |
208 | ||
282113ba CV |
209 | debug ("Impersonating client"); |
210 | if (!conn->impersonate_client ()) | |
211 | { | |
212 | CloseHandle (from_process_handle); | |
213 | CloseHandle (to_process_handle); | |
214 | error_code (EACCES); | |
215 | return; | |
216 | } | |
1c001dd2 CS |
217 | |
218 | HANDLE token_handle = NULL; | |
219 | ||
282113ba | 220 | debug ("about to open thread token"); |
1c001dd2 CS |
221 | const DWORD rc = OpenThreadToken (GetCurrentThread (), |
222 | TOKEN_QUERY, | |
223 | TRUE, | |
224 | &token_handle); | |
225 | ||
61522196 | 226 | debug ("opened thread token, rc=%u", rc); |
282113ba CV |
227 | if (!conn->revert_to_self ()) |
228 | { | |
229 | CloseHandle (from_process_handle); | |
230 | CloseHandle (to_process_handle); | |
231 | error_code (EACCES); | |
232 | return; | |
233 | } | |
1c001dd2 CS |
234 | |
235 | if (!rc) | |
f449bfef | 236 | { |
61522196 | 237 | log (LOG_ERR, "error opening thread token (err %u)", GetLastError ()); |
1c001dd2 CS |
238 | CloseHandle (from_process_handle); |
239 | CloseHandle (to_process_handle); | |
240 | error_code (EACCES); | |
241 | return; | |
f449bfef RC |
242 | } |
243 | ||
1c001dd2 | 244 | // From this point on, a reply body is returned to the client. |
f449bfef | 245 | |
1c001dd2 CS |
246 | const HANDLE from_master = req.from_master; |
247 | const HANDLE to_master = req.to_master; | |
f449bfef | 248 | |
1c001dd2 CS |
249 | req.from_master = NULL; |
250 | req.to_master = NULL; | |
251 | ||
252 | msglen (sizeof (req)); | |
253 | ||
254 | if (from_master) | |
255 | if (check_and_dup_handle (from_process_handle, to_process_handle, | |
256 | token_handle, | |
257 | GENERIC_READ, | |
258 | from_master, | |
259 | &req.from_master, TRUE) != 0) | |
260 | { | |
61522196 | 261 | log (LOG_ERR, "error duplicating from_master handle (err %u)", |
1c001dd2 CS |
262 | GetLastError ()); |
263 | error_code (EACCES); | |
264 | } | |
265 | ||
266 | if (to_master) | |
267 | if (check_and_dup_handle (from_process_handle, to_process_handle, | |
268 | token_handle, | |
269 | GENERIC_WRITE, | |
270 | to_master, | |
271 | &req.to_master, TRUE) != 0) | |
272 | { | |
61522196 | 273 | log (LOG_ERR, "error duplicating to_master handle (err %u)", |
1c001dd2 CS |
274 | GetLastError ()); |
275 | error_code (EACCES); | |
276 | } | |
277 | ||
278 | CloseHandle (from_process_handle); | |
279 | CloseHandle (to_process_handle); | |
280 | CloseHandle (token_handle); | |
281 | ||
61522196 CV |
282 | debug ("%u(%p, %p) -> %u(%p,%p)", req.master_pid, from_master, to_master, |
283 | req.pid, req.from_master, req.to_master); | |
1c001dd2 CS |
284 | |
285 | return; | |
f449bfef RC |
286 | } |
287 | ||
288 | void | |
1c001dd2 | 289 | client_request_get_version::serve (transport_layer_base *, process_cache *) |
f449bfef | 290 | { |
1c001dd2 CS |
291 | assert (!error_code ()); |
292 | ||
293 | if (msglen ()) | |
282113ba | 294 | log (LOG_ERR, "unexpected request body ignored: %lu bytes", msglen ()); |
1c001dd2 CS |
295 | |
296 | msglen (sizeof (version)); | |
297 | ||
f449bfef RC |
298 | version.major = CYGWIN_SERVER_VERSION_MAJOR; |
299 | version.api = CYGWIN_SERVER_VERSION_API; | |
300 | version.minor = CYGWIN_SERVER_VERSION_MINOR; | |
301 | version.patch = CYGWIN_SERVER_VERSION_PATCH; | |
302 | } | |
303 | ||
304 | class server_request : public queue_request | |
305 | { | |
1c001dd2 CS |
306 | public: |
307 | server_request (transport_layer_base *const conn, process_cache *const cache) | |
308 | : _conn (conn), _cache (cache) | |
309 | {} | |
f449bfef | 310 | |
1c001dd2 CS |
311 | virtual ~server_request () |
312 | { | |
282113ba | 313 | delete _conn; |
1c001dd2 | 314 | } |
f449bfef | 315 | |
1c001dd2 CS |
316 | virtual void process () |
317 | { | |
318 | client_request::handle_request (_conn, _cache); | |
319 | } | |
320 | ||
321 | private: | |
322 | transport_layer_base *const _conn; | |
323 | process_cache *const _cache; | |
f449bfef | 324 | }; |
f449bfef | 325 | |
1c001dd2 | 326 | class server_submission_loop : public queue_submission_loop |
f449bfef | 327 | { |
1c001dd2 CS |
328 | public: |
329 | server_submission_loop (threaded_queue *const queue, | |
330 | transport_layer_base *const transport, | |
331 | process_cache *const cache) | |
332 | : queue_submission_loop (queue, false), | |
333 | _transport (transport), | |
334 | _cache (cache) | |
f449bfef | 335 | { |
1c001dd2 CS |
336 | assert (_transport); |
337 | assert (_cache); | |
f449bfef | 338 | } |
f449bfef | 339 | |
1c001dd2 CS |
340 | private: |
341 | transport_layer_base *const _transport; | |
342 | process_cache *const _cache; | |
343 | ||
344 | virtual void request_loop (); | |
345 | }; | |
346 | ||
347 | /* FIXME: this is a little ugly. What we really want is to wait on | |
348 | * two objects: one for the pipe/socket, and one for being told to | |
349 | * shutdown. Otherwise this will stay a problem (we won't actually | |
350 | * shutdown until the request _AFTER_ the shutdown request. And | |
351 | * sending ourselves a request is ugly | |
352 | */ | |
f449bfef | 353 | void |
1c001dd2 | 354 | server_submission_loop::request_loop () |
f449bfef | 355 | { |
1c001dd2 CS |
356 | /* I'd like the accepting thread's priority to be above any "normal" |
357 | * thread in the system to avoid overflowing the listen queue (for | |
358 | * sockets; similar issues exist for named pipes); but, for example, | |
359 | * a normal priority thread in a foregrounded process is boosted to | |
360 | * THREAD_PRIORITY_HIGHEST (AFAICT). Thus try to set the current | |
361 | * thread's priority to a level one above that. This fails on | |
362 | * win9x/ME so assume any failure in that call is due to that and | |
363 | * simply call again at one priority level lower. | |
7131554a CV |
364 | * FIXME: This looks weird and is an issue on NT, too. Per MSDN, |
365 | * THREAD_PRIORITY_HIGHEST + 1 is only a valid priority level if | |
366 | * the priority class is set to REALTIME_PRIORITY_CLASS. | |
1c001dd2 CS |
367 | */ |
368 | if (!SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST + 1)) | |
369 | if (!SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_HIGHEST)) | |
61522196 | 370 | debug ("failed to raise accept thread priority (err %u)", |
282113ba | 371 | GetLastError ()); |
1c001dd2 CS |
372 | |
373 | while (_running) | |
374 | { | |
375 | bool recoverable = false; | |
376 | transport_layer_base *const conn = _transport->accept (&recoverable); | |
377 | if (!conn && !recoverable) | |
378 | { | |
282113ba | 379 | log (LOG_ERR, "fatal error on IPC transport: closing down"); |
1c001dd2 CS |
380 | return; |
381 | } | |
382 | // EINTR probably implies a shutdown request; so back off for a | |
383 | // moment to let the main thread take control, otherwise the | |
384 | // server spins here receiving EINTR repeatedly since the signal | |
385 | // handler in the main thread doesn't get a chance to be called. | |
386 | if (!conn && errno == EINTR) | |
387 | { | |
388 | if (!SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_NORMAL)) | |
61522196 | 389 | debug ("failed to reset thread priority (err %u)", |
282113ba | 390 | GetLastError ()); |
1c001dd2 CS |
391 | |
392 | Sleep (0); | |
393 | if (!SetThreadPriority (GetCurrentThread (), | |
394 | THREAD_PRIORITY_HIGHEST + 1)) | |
395 | if (!SetThreadPriority (GetCurrentThread (), | |
396 | THREAD_PRIORITY_HIGHEST)) | |
61522196 | 397 | debug ("failed to raise thread priority (err %u)", |
282113ba | 398 | GetLastError ()); |
1c001dd2 CS |
399 | } |
400 | if (conn) | |
282113ba | 401 | _queue->add (new server_request (conn, _cache)); |
1c001dd2 CS |
402 | } |
403 | } | |
404 | ||
405 | client_request_shutdown::client_request_shutdown () | |
406 | : client_request (CYGSERVER_REQUEST_SHUTDOWN) | |
407 | { | |
f449bfef RC |
408 | } |
409 | ||
410 | void | |
1c001dd2 | 411 | client_request_shutdown::serve (transport_layer_base *, process_cache *) |
f449bfef | 412 | { |
1c001dd2 CS |
413 | assert (!error_code ()); |
414 | ||
415 | if (msglen ()) | |
282113ba | 416 | log (LOG_ERR, "unexpected request body ignored: %lu bytes", msglen ()); |
1c001dd2 | 417 | |
f449bfef RC |
418 | /* FIXME: link upwards, and then this becomes a trivial method call to |
419 | * only shutdown _this queue_ | |
420 | */ | |
1c001dd2 CS |
421 | |
422 | kill (getpid (), SIGINT); | |
423 | ||
424 | msglen (0); | |
f449bfef RC |
425 | } |
426 | ||
1c001dd2 CS |
427 | static sig_atomic_t shutdown_server = false; |
428 | ||
429 | static void | |
430 | handle_signal (const int signum) | |
f449bfef | 431 | { |
1c001dd2 CS |
432 | /* any signal makes us die :} */ |
433 | ||
434 | shutdown_server = true; | |
f449bfef RC |
435 | } |
436 | ||
1c001dd2 CS |
437 | /* |
438 | * print_usage () | |
439 | */ | |
440 | ||
441 | static void | |
442 | print_usage (const char *const pgm) | |
f449bfef | 443 | { |
282113ba | 444 | log (LOG_NOTICE, "Usage: %s [OPTIONS]\n" |
9e9bc3a4 CV |
445 | "\n" |
446 | "Cygwin background service daemon\n" | |
447 | "\n" | |
282113ba | 448 | "Configuration option:\n" |
9e9bc3a4 | 449 | "\n" |
282113ba | 450 | " -f, --config-file <file> Use <file> as config file. Default is\n" |
e74c79a8 | 451 | " " DEF_CONFIG_FILE "\n" |
282113ba CV |
452 | "\n" |
453 | "Performance options:\n" | |
9e9bc3a4 | 454 | "\n" |
282113ba | 455 | " -c, --cleanup-threads <num> Number of cleanup threads to use.\n" |
2d015bd6 | 456 | " -p, --process-cache <num> Size of process cache.\n" |
282113ba CV |
457 | " -r, --request-threads <num> Number of request threads to use.\n" |
458 | "\n" | |
459 | "Logging options:\n" | |
9e9bc3a4 | 460 | "\n" |
282113ba CV |
461 | " -d, --debug Log debug messages to stderr.\n" |
462 | " -e, --stderr Log to stderr (default if stderr is a tty).\n" | |
463 | " -E, --no-stderr Don't log to stderr (see -y, -Y options).\n" | |
282113ba CV |
464 | " -l, --log-level <level> Verbosity of logging (1..7). Default: 6\n" |
465 | " -y, --syslog Log to syslog (default if stderr is no tty).\n" | |
466 | " -Y, --no-syslog Don't log to syslog (See -e, -E options).\n" | |
467 | "\n" | |
468 | "Support options:\n" | |
9e9bc3a4 | 469 | "\n" |
282113ba CV |
470 | " -m, --no-sharedmem Don't start XSI Shared Memory support.\n" |
471 | " -q, --no-msgqueues Don't start XSI Message Queue support.\n" | |
472 | " -s, --no-semaphores Don't start XSI Semaphore support.\n" | |
473 | "\n" | |
474 | "Miscellaneous:\n" | |
9e9bc3a4 | 475 | "\n" |
282113ba CV |
476 | " -S, --shutdown Shutdown the daemon.\n" |
477 | " -h, --help Output usage information and exit.\n" | |
9e9bc3a4 | 478 | " -V, --version Output version information and exit.\n" |
282113ba | 479 | , pgm); |
1c001dd2 | 480 | } |
f449bfef | 481 | |
1c001dd2 CS |
482 | /* |
483 | * print_version () | |
484 | */ | |
f449bfef | 485 | |
1c001dd2 | 486 | static void |
282113ba | 487 | print_version () |
1c001dd2 | 488 | { |
9e9bc3a4 CV |
489 | log (LOG_INFO, |
490 | "cygserver (cygwin) %d.%d.%d\n" | |
491 | "Cygwin background service daemon\n" | |
6e623e93 | 492 | "Copyright (C) 2001 - %s Cygwin Authors\n" |
9e9bc3a4 CV |
493 | "This is free software; see the source for copying conditions. There is NO\n" |
494 | "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.", | |
495 | CYGWIN_VERSION_DLL_MAJOR / 1000, | |
496 | CYGWIN_VERSION_DLL_MAJOR % 1000, | |
497 | CYGWIN_VERSION_DLL_MINOR, | |
498 | strrchr (__DATE__, ' ') + 1); | |
f449bfef RC |
499 | } |
500 | ||
1c001dd2 CS |
501 | /* |
502 | * main () | |
503 | */ | |
f449bfef | 504 | |
1c001dd2 CS |
505 | int |
506 | main (const int argc, char *argv[]) | |
f449bfef | 507 | { |
1c001dd2 CS |
508 | const struct option longopts[] = { |
509 | {"cleanup-threads", required_argument, NULL, 'c'}, | |
282113ba CV |
510 | {"debug", no_argument, NULL, 'd'}, |
511 | {"stderr", no_argument, NULL, 'e'}, | |
512 | {"no-stderr", no_argument, NULL, 'E'}, | |
513 | {"config-file", required_argument, NULL, 'f'}, | |
1c001dd2 | 514 | {"help", no_argument, NULL, 'h'}, |
282113ba CV |
515 | {"log-level", required_argument, NULL, 'l'}, |
516 | {"no-sharedmem", no_argument, NULL, 'm'}, | |
2d015bd6 | 517 | {"process-cache", required_argument, NULL, 'p'}, |
282113ba | 518 | {"no-msgqueues", no_argument, NULL, 'q'}, |
1c001dd2 | 519 | {"request-threads", required_argument, NULL, 'r'}, |
282113ba CV |
520 | {"no-semaphores", no_argument, NULL, 's'}, |
521 | {"shutdown", no_argument, NULL, 'S'}, | |
9e9bc3a4 | 522 | {"version", no_argument, NULL, 'V'}, |
282113ba CV |
523 | {"syslog", no_argument, NULL, 'y'}, |
524 | {"no-syslog", no_argument, NULL, 'Y'}, | |
1c001dd2 CS |
525 | {0, no_argument, NULL, 0} |
526 | }; | |
f449bfef | 527 | |
9e9bc3a4 | 528 | const char opts[] = "c:deEf:hl:mp:qr:sSVyY"; |
f449bfef | 529 | |
61522196 CV |
530 | int32_t cleanup_threads = 0; |
531 | int32_t request_threads = 0; | |
532 | int32_t process_cache_size = 0; | |
1c001dd2 | 533 | bool shutdown = false; |
282113ba CV |
534 | const char *config_file = DEF_CONFIG_FILE; |
535 | bool force_config_file = false; | |
536 | tun_bool_t option_log_stderr = TUN_UNDEF; | |
537 | tun_bool_t option_log_syslog = TUN_UNDEF; | |
538 | ||
539 | char *c = NULL; | |
540 | ||
541 | /* Check if we have a terminal. If so, default to stderr logging, | |
542 | otherwise default to syslog logging. This must be done early | |
543 | to allow default logging already in option processing state. */ | |
544 | openlog ("cygserver", LOG_PID, LOG_KERN); | |
545 | if (isatty (2)) | |
546 | log_stderr = TUN_TRUE; | |
1c001dd2 | 547 | else |
282113ba | 548 | log_syslog = TUN_TRUE; |
1c001dd2 CS |
549 | |
550 | int opt; | |
551 | ||
2d015bd6 | 552 | securityinit (); |
c9508cb4 | 553 | |
282113ba | 554 | opterr = 0; |
1c001dd2 CS |
555 | while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF) |
556 | switch (opt) | |
f449bfef | 557 | { |
1c001dd2 | 558 | case 'c': |
282113ba CV |
559 | c = NULL; |
560 | cleanup_threads = strtol (optarg, &c, 10); | |
2d015bd6 CV |
561 | if (cleanup_threads <= 0 || cleanup_threads > 32 || (c && *c)) |
562 | panic ("Number of cleanup threads must be between 1 and 32"); | |
282113ba CV |
563 | break; |
564 | ||
565 | case 'd': | |
566 | log_debug = TUN_TRUE; | |
567 | break; | |
568 | ||
569 | case 'e': | |
570 | option_log_stderr = TUN_TRUE; | |
571 | break; | |
572 | ||
573 | case 'E': | |
574 | option_log_stderr = TUN_FALSE; | |
1c001dd2 CS |
575 | break; |
576 | ||
282113ba CV |
577 | case 'f': |
578 | config_file = optarg; | |
579 | force_config_file = true; | |
580 | break; | |
581 | ||
1c001dd2 | 582 | case 'h': |
282113ba | 583 | print_usage (getprogname ()); |
1c001dd2 CS |
584 | return 0; |
585 | ||
282113ba CV |
586 | case 'l': |
587 | c = NULL; | |
588 | log_level = strtoul (optarg, &c, 10); | |
589 | if (!log_level || log_level > 7 || (c && *c)) | |
590 | panic ("Log level must be between 1 and 7"); | |
591 | break; | |
592 | ||
593 | case 'm': | |
594 | support_sharedmem = TUN_FALSE; | |
595 | break; | |
596 | ||
2d015bd6 CV |
597 | case 'p': |
598 | c = NULL; | |
599 | process_cache_size = strtol (optarg, &c, 10); | |
600 | if (process_cache_size <= 0 || process_cache_size > 310 || (c && *c)) | |
601 | panic ("Size of process cache must be between 1 and 310"); | |
602 | break; | |
603 | ||
282113ba CV |
604 | case 'q': |
605 | support_msgqueues = TUN_FALSE; | |
606 | break; | |
607 | ||
1c001dd2 | 608 | case 'r': |
282113ba CV |
609 | c = NULL; |
610 | request_threads = strtol (optarg, &c, 10); | |
2d015bd6 CV |
611 | if (request_threads <= 0 || request_threads > 310 || (c && *c)) |
612 | panic ("Number of request threads must be between 1 and 310"); | |
73ea29f4 | 613 | break; |
1c001dd2 CS |
614 | |
615 | case 's': | |
282113ba CV |
616 | support_semaphores = TUN_FALSE; |
617 | break; | |
618 | ||
619 | case 'S': | |
1c001dd2 | 620 | shutdown = true; |
73ea29f4 | 621 | break; |
1c001dd2 | 622 | |
9e9bc3a4 | 623 | case 'V': |
282113ba | 624 | print_version (); |
1c001dd2 CS |
625 | return 0; |
626 | ||
282113ba CV |
627 | case 'y': |
628 | option_log_syslog = TUN_TRUE; | |
629 | break; | |
630 | ||
631 | case 'Y': | |
632 | option_log_syslog = TUN_FALSE; | |
633 | break; | |
634 | ||
1c001dd2 | 635 | case '?': |
282113ba CV |
636 | panic ("unknown option -- %c\n" |
637 | "Try `%s --help' for more information.", optopt, getprogname ()); | |
f449bfef RC |
638 | } |
639 | ||
1c001dd2 | 640 | if (optind != argc) |
282113ba | 641 | panic ("Too many arguments"); |
f449bfef RC |
642 | |
643 | if (shutdown) | |
644 | { | |
1c001dd2 CS |
645 | /* Setting `cygserver_running' stops the request code making a |
646 | * version request, which is not much to the point. | |
647 | */ | |
648 | cygserver_running = CYGSERVER_OK; | |
649 | ||
650 | client_request_shutdown req; | |
651 | ||
652 | if (req.make_request () == -1 || req.error_code ()) | |
282113ba | 653 | panic("Shutdown request failed: %s", strerror (req.error_code ())); |
1c001dd2 CS |
654 | |
655 | // FIXME: It would be nice to wait here for the daemon to exit. | |
656 | ||
657 | return 0; | |
f449bfef RC |
658 | } |
659 | ||
1c001dd2 CS |
660 | SIGHANDLE (SIGHUP); |
661 | SIGHANDLE (SIGINT); | |
662 | SIGHANDLE (SIGTERM); | |
663 | ||
282113ba CV |
664 | tunable_param_init (config_file, force_config_file); |
665 | ||
666 | loginit (option_log_stderr, option_log_syslog); | |
667 | ||
668 | log (LOG_INFO, "daemon starting up"); | |
669 | ||
670 | if (!cleanup_threads) | |
671 | TUNABLE_INT_FETCH ("kern.srv.cleanup_threads", &cleanup_threads); | |
672 | if (!cleanup_threads) | |
673 | cleanup_threads = 2; | |
1c001dd2 | 674 | |
282113ba CV |
675 | if (!request_threads) |
676 | TUNABLE_INT_FETCH ("kern.srv.request_threads", &request_threads); | |
677 | if (!request_threads) | |
678 | request_threads = 10; | |
679 | ||
2d015bd6 CV |
680 | if (!process_cache_size) |
681 | TUNABLE_INT_FETCH ("kern.srv.process_cache_size", &process_cache_size); | |
682 | if (!process_cache_size) | |
683 | process_cache_size = 62; | |
684 | ||
282113ba CV |
685 | if (support_sharedmem == TUN_UNDEF) |
686 | TUNABLE_BOOL_FETCH ("kern.srv.sharedmem", &support_sharedmem); | |
687 | if (support_sharedmem == TUN_UNDEF) | |
688 | support_sharedmem = TUN_TRUE; | |
689 | ||
690 | if (support_msgqueues == TUN_UNDEF) | |
691 | TUNABLE_BOOL_FETCH ("kern.srv.msgqueues", &support_msgqueues); | |
692 | if (support_msgqueues == TUN_UNDEF) | |
693 | support_msgqueues = TUN_TRUE; | |
694 | ||
695 | if (support_semaphores == TUN_UNDEF) | |
696 | TUNABLE_BOOL_FETCH ("kern.srv.semaphores", &support_semaphores); | |
697 | if (support_semaphores == TUN_UNDEF) | |
698 | support_semaphores = TUN_TRUE; | |
699 | ||
7131554a | 700 | if (!setup_privileges ()) |
282113ba CV |
701 | panic ("Setting process privileges failed."); |
702 | ||
1d88f8ce CV |
703 | ipcinit (); |
704 | ||
282113ba | 705 | /*XXXXX*/ |
1c001dd2 | 706 | threaded_queue request_queue (request_threads); |
1c001dd2 CS |
707 | |
708 | transport_layer_base *const transport = create_server_transport (); | |
709 | assert (transport); | |
1c001dd2 | 710 | |
5ed0628c CV |
711 | if (transport->listen () == -1) |
712 | return 1; | |
713 | ||
2d015bd6 | 714 | process_cache cache (process_cache_size, cleanup_threads); |
1c001dd2 CS |
715 | |
716 | server_submission_loop submission_loop (&request_queue, transport, &cache); | |
1c001dd2 CS |
717 | |
718 | request_queue.add_submission_loop (&submission_loop); | |
1c001dd2 | 719 | |
1c001dd2 | 720 | cache.start (); |
1c001dd2 CS |
721 | |
722 | request_queue.start (); | |
1c001dd2 | 723 | |
282113ba | 724 | log (LOG_NOTICE, "Initialization complete. Waiting for requests."); |
1c001dd2 CS |
725 | |
726 | /* TODO: wait on multiple objects - the thread handle for each | |
727 | * request loop + all the process handles. This should be done by | |
728 | * querying the request_queue and the process cache for all their | |
729 | * handles, and then waiting for (say) 30 seconds. after that we | |
730 | * recreate the list of handles to wait on, and wait again. the | |
731 | * point of all this abstraction is that we can trivially server | |
732 | * both sockets and pipes simply by making a new transport, and then | |
733 | * calling request_queue.process_requests (transport2); | |
f449bfef RC |
734 | */ |
735 | /* WaitForMultipleObjects abort && request_queue && process_queue && signal | |
736 | -- if signal event then retrigger it | |
1c001dd2 CS |
737 | */ |
738 | while (!shutdown_server && request_queue.running () && cache.running ()) | |
282113ba CV |
739 | { |
740 | pause (); | |
741 | if (ipcunload ()) | |
742 | { | |
743 | shutdown_server = false; | |
744 | log (LOG_WARNING, "Shutdown request received but ignored. " | |
745 | "Dependent processes still running."); | |
746 | } | |
747 | } | |
1c001dd2 | 748 | |
282113ba | 749 | log (LOG_INFO, "Shutdown request received - new requests will be denied"); |
1c001dd2 | 750 | request_queue.stop (); |
282113ba CV |
751 | log (LOG_INFO, "All pending requests processed"); |
752 | delete transport; | |
753 | log (LOG_INFO, "No longer accepting requests - cygwin will operate in daemonless mode"); | |
1c001dd2 | 754 | cache.stop (); |
282113ba CV |
755 | log (LOG_INFO, "All outstanding process-cache activities completed"); |
756 | log (LOG_NOTICE, "Shutdown finished."); | |
1c001dd2 CS |
757 | |
758 | return 0; | |
f449bfef | 759 | } |
282113ba | 760 | #endif /* __OUTSIDE_CYGWIN__ */ |