1 /* -*- c-file-style: "linux"; -*-
3 Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
4 Copyright (C) 2000-2001 by Martin Pool <mbp@samba.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 Logging and utility functions.
25 Mapping to human-readable messages added by Martin Pool
26 <mbp@samba.org>, Oct 2000.
30 static char *logfname;
32 static int log_error_fd = -1;
38 } const rerr_names[] = {
39 { RERR_SYNTAX , "syntax or usage error" },
40 { RERR_PROTOCOL , "protocol incompatibility" },
41 { RERR_FILESELECT , "errors selecting input/output files, dirs" },
42 { RERR_UNSUPPORTED , "requested action not supported" },
43 { RERR_SOCKETIO , "error in socket IO" },
44 { RERR_FILEIO , "error in file IO" },
45 { RERR_STREAMIO , "error in rsync protocol data stream" },
46 { RERR_MESSAGEIO , "errors with program diagnostics" },
47 { RERR_IPC , "error in IPC code" },
48 { RERR_SIGNAL , "received SIGUSR1 or SIGINT" },
49 { RERR_WAITCHILD , "some error returned by waitpid()" },
50 { RERR_MALLOC , "error allocating core memory buffers" },
51 { RERR_TIMEOUT , "timeout in data send/receive" },
58 * Map from rsync error code to name, or return NULL.
60 static char const *rerr_name(int code)
63 for (i = 0; rerr_names[i].name; i++) {
64 if (rerr_names[i].code == code)
65 return rerr_names[i].name;
71 struct err_list *next;
74 int written; /* how many bytes we have written so far */
77 static struct err_list *err_list_head;
78 static struct err_list *err_list_tail;
80 /* add an error message to the pending error list */
81 static void err_list_add(int code, char *buf, int len)
84 el = (struct err_list *)malloc(sizeof(*el));
85 if (!el) exit_cleanup(RERR_MALLOC);
87 el->buf = malloc(len+4);
88 if (!el->buf) exit_cleanup(RERR_MALLOC);
89 memcpy(el->buf+4, buf, len);
90 SIVAL(el->buf, 0, ((code+MPLEX_BASE)<<24) | len);
94 err_list_tail->next = el;
102 /* try to push errors off the error list onto the wire */
103 void err_list_push(void)
105 if (log_error_fd == -1) return;
107 while (err_list_head) {
108 struct err_list *el = err_list_head;
109 int n = write(log_error_fd, el->buf+el->written, el->len - el->written);
114 if (el->written == el->len) {
116 err_list_head = el->next;
117 if (!err_list_head) err_list_tail = NULL;
124 static void logit(int priority, char *buf)
129 fprintf(logfile,"%s [%d] %s",
130 timestring(time(NULL)), (int)getpid(), buf);
133 syslog(priority, "%s", buf);
139 static int initialised;
140 int options = LOG_PID;
143 if (initialised) return;
146 /* this looks pointless, but it is needed in order for the
147 C library on some systems to fetch the timezone info
152 /* optionally use a log file instead of syslog */
153 logfname = lp_log_file();
163 options |= LOG_NDELAY;
167 openlog("rsyncd", options, lp_syslog_facility());
169 openlog("rsyncd", options);
173 logit(LOG_INFO,"rsyncd started\n");
179 if (logfname && !logfile) {
180 extern int orig_umask;
181 int old_umask = umask(022 | orig_umask);
182 logfile = fopen(logfname, "a");
195 /* setup the error file descriptor - used when we are a server
196 that is receiving files */
197 void set_error_fd(int fd)
200 set_nonblocking(log_error_fd);
203 /* this is the underlying (unformatted) rsync debugging function. Call
204 it with FINFO, FERROR or FLOG */
205 void rwrite(enum logcode code, char *buf, int len)
208 extern int am_daemon;
209 extern int am_server;
211 /* recursion can happen with certain fatal conditions */
213 if (quiet && code == FINFO) return;
215 if (len < 0) exit_cleanup(RERR_MESSAGEIO);
220 if (am_daemon) logit(LOG_INFO, buf);
224 /* first try to pass it off to our sibling */
225 if (am_server && log_error_fd != -1) {
226 err_list_add(code, buf, len);
231 /* if that fails, try to pass it to the other end */
232 if (am_server && io_multiplex_write(code, buf, len)) {
238 int priority = LOG_INFO;
239 if (code == FERROR) priority = LOG_WARNING;
246 logit(priority, buf);
252 if (code == FERROR) {
263 if (!f) exit_cleanup(RERR_MESSAGEIO);
265 if (fwrite(buf, len, 1, f) != 1) exit_cleanup(RERR_MESSAGEIO);
267 if (buf[len-1] == '\r' || buf[len-1] == '\n') fflush(f);
271 /* This is the rsync debugging function. Call it with FINFO, FERROR or
273 void rprintf(enum logcode code, const char *format, ...)
279 va_start(ap, format);
280 len = vslprintf(buf, sizeof(buf), format, ap);
283 if (len > sizeof(buf)-1) exit_cleanup(RERR_MESSAGEIO);
285 rwrite(code, buf, len);
289 /* This is like rprintf, but it also tries to print some
290 * representation of the error code. Normally errcode = errno.
292 * Unlike rprintf, this always adds a newline and there should not be
293 * one in the format string.
295 * Note that since strerror might involve dynamically loading a
296 * message catalog we need to call it once before chroot-ing. */
297 void rsyserr(enum logcode code, int errcode, const char *format, ...)
304 va_start(ap, format);
305 len = vslprintf(buf, sizeof(buf), format, ap);
308 if (len > sizeof(buf)-1) exit_cleanup(RERR_MESSAGEIO);
310 sysmsg = strerror(errcode);
311 sys_len = strlen(sysmsg);
312 if (len + 3 + sys_len > sizeof(buf) - 1)
313 exit_cleanup(RERR_MESSAGEIO);
315 strcpy(buf + len, ": ");
317 strcpy(buf + len, sysmsg);
319 strcpy(buf + len, "\n");
322 rwrite(code, buf, len);
327 void rflush(enum logcode code)
330 extern int am_daemon;
340 if (code == FERROR) {
345 extern int am_server;
352 if (!f) exit_cleanup(RERR_MESSAGEIO);
358 /* a generic logging routine for send/recv, with parameter
360 static void log_formatted(enum logcode code,
361 char *format, char *op, struct file_struct *file,
362 struct stats *initial_stats)
364 extern int module_id;
365 extern char *auth_user;
370 extern struct stats stats;
371 extern int am_sender;
372 extern int am_daemon;
375 strlcpy(buf, format, sizeof(buf));
378 s && (p=strchr(s,'%')); ) {
383 case 'h': if (am_daemon) n = client_name(0); break;
384 case 'a': if (am_daemon) n = client_addr(0); break;
386 slprintf(buf2,sizeof(buf2),"%.0f",
387 (double)file->length);
391 slprintf(buf2,sizeof(buf2),"%d",
395 case 'o': n = op; break;
397 slprintf(buf2, sizeof(buf2), "%s/%s",
398 file->basedir?file->basedir:"",
404 case 'm': n = lp_name(module_id); break;
405 case 't': n = timestring(time(NULL)); break;
406 case 'P': n = lp_path(module_id); break;
407 case 'u': n = auth_user; break;
410 b = stats.total_written -
411 initial_stats->total_written;
413 b = stats.total_read -
414 initial_stats->total_read;
416 slprintf(buf2,sizeof(buf2),"%.0f", (double)b);
421 b = stats.total_written -
422 initial_stats->total_written;
424 b = stats.total_read -
425 initial_stats->total_read;
427 slprintf(buf2,sizeof(buf2),"%.0f", (double)b);
436 if ((l-1) + ((int)(s - &buf[0])) > sizeof(buf)) {
437 rprintf(FERROR,"buffer overflow expanding %%%c - exiting\n",
439 exit_cleanup(RERR_MESSAGEIO);
443 memmove(s+(l-1), s+1, strlen(s+1)+1);
450 rprintf(code,"%s\n", buf);
453 /* log the outgoing transfer of a file */
454 void log_send(struct file_struct *file, struct stats *initial_stats)
456 extern int module_id;
457 extern int am_server;
458 extern char *log_format;
460 if (lp_transfer_logging(module_id)) {
461 log_formatted(FLOG, lp_log_format(module_id), "send", file, initial_stats);
462 } else if (log_format && !am_server) {
463 log_formatted(FINFO, log_format, "send", file, initial_stats);
467 /* log the incoming transfer of a file */
468 void log_recv(struct file_struct *file, struct stats *initial_stats)
470 extern int module_id;
471 extern int am_server;
472 extern char *log_format;
474 if (lp_transfer_logging(module_id)) {
475 log_formatted(FLOG, lp_log_format(module_id), "recv", file, initial_stats);
476 } else if (log_format && !am_server) {
477 log_formatted(FINFO, log_format, "recv", file, initial_stats);
485 * Called when the transfer is interrupted for some reason.
487 * Code is one of the RERR_* codes from errcode.h, or terminating
490 void log_exit(int code, const char *file, int line)
493 extern struct stats stats;
494 rprintf(FLOG,"wrote %.0f bytes read %.0f bytes total size %.0f\n",
495 (double)stats.total_written,
496 (double)stats.total_read,
497 (double)stats.total_size);
501 name = rerr_name(code);
503 name = "unexplained error";
505 rprintf(FLOG,"transfer interrupted: %s (code %d) at %s(%d)\n",
506 name, code, file, line);
513 /* log the incoming transfer of a file for interactive use, this
514 will be called at the end where the client was run
516 it i called when a file starts to be transferred
518 void log_transfer(struct file_struct *file, const char *fname)
522 if (!verbose) return;
524 rprintf(FINFO,"%s\n", fname);