2 * End-of-run cleanup routines.
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2002 Martin Pool
7 * Copyright (C) 2003-2009 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
28 extern int am_generator;
30 extern int keep_partial;
31 extern int got_xfer_error;
32 extern int protocol_version;
33 extern int output_needs_newline;
34 extern char *partial_dir;
35 extern char *logfile_name;
38 static struct sigaction sigact;
42 * Close all open sockets and files, allowing a (somewhat) graceful
43 * shutdown() of socket connections. This eliminates the abortive
44 * TCP RST sent by a Winsock-based system when the close() occurs.
48 #ifdef SHUTDOWN_ALL_SOCKETS
54 max_fd = sysconf(_SC_OPEN_MAX) - 1;
55 for (fd = max_fd; fd >= 0; fd--) {
56 if ((ret = do_fstat(fd, &st)) == 0) {
58 ret = shutdown(fd, 2);
68 * Code for handling interrupted transfers. Depending on the @c
69 * --partial option, we may either delete the temporary file, or go
70 * ahead and overwrite the destination. This second behaviour only
71 * occurs if we've sent literal data and therefore hopefully made
72 * progress on the transfer.
76 * Set to True once literal data has been sent across the link for the
77 * current file. (????)
79 * Handling the cleanup when a transfer is interrupted is tricky when
80 * --partial is selected. We need to ensure that the partial file is
81 * kept if any real data has been transferred.
83 int cleanup_got_literal = 0;
85 static const char *cleanup_fname;
86 static const char *cleanup_new_fname;
87 static struct file_struct *cleanup_file;
88 static int cleanup_fd_r, cleanup_fd_w;
89 static pid_t cleanup_pid = 0;
91 pid_t cleanup_child_pid = -1;
94 * Eventually calls exit(), passing @p code, therefore does not return.
96 * @param code one of the RERR_* codes from errcode.h.
98 NORETURN void _exit_cleanup(int code, const char *file, int line)
100 static int cleanup_step = 0;
101 static int exit_code = 0;
102 static int unmodified_code = 0;
104 SIGACTION(SIGUSR1, SIG_IGN);
105 SIGACTION(SIGUSR2, SIG_IGN);
107 if (exit_code) /* Preserve first error code when recursing. */
110 /* If this is the exit at the end of the run, the server side
111 * should not attempt to output a message (see log_exit()). */
112 if (am_server && code == 0)
115 /* Some of our actions might cause a recursive call back here, so we
116 * keep track of where we are in the cleanup and never repeat a step. */
117 switch (cleanup_step) {
118 #include "case_N.h" /* case 0: cleanup_step++; */
120 exit_code = unmodified_code = code;
122 if (output_needs_newline) {
124 output_needs_newline = 0;
127 if (DEBUG_GTE(EXIT, 2)) {
129 "_exit_cleanup(code=%d, file=%s, line=%d): entered\n",
136 if (exit_code && exit_code != RERR_RCVR_ERROR
137 && exit_code != RERR_STREAMIO && exit_code != RERR_SIGNAL1
138 && (protocol_version >= 31 || (!am_sender && !am_generator))) {
139 send_msg_int(MSG_ERROR_EXIT, exit_code);
140 if (am_server && !am_sender && !am_generator)
141 noop_io_until_death();
147 if (cleanup_child_pid != -1) {
149 int pid = wait_process(cleanup_child_pid, &status, WNOHANG);
150 if (pid == cleanup_child_pid) {
151 status = WEXITSTATUS(status);
153 code = exit_code = status;
160 if (cleanup_got_literal && cleanup_fname && cleanup_new_fname
161 && keep_partial && handle_partial_dir(cleanup_new_fname, PDIR_CREATE)) {
162 const char *fname = cleanup_fname;
163 cleanup_fname = NULL;
164 if (cleanup_fd_r != -1)
166 if (cleanup_fd_w != -1) {
167 flush_write_file(cleanup_fd_w);
170 finish_transfer(cleanup_new_fname, fname, NULL, NULL,
171 cleanup_file, 0, !partial_dir);
177 if (!code || am_server || (!am_sender && !am_generator))
178 io_flush(FULL_FLUSH);
184 do_unlink(cleanup_fname);
187 if (cleanup_pid && cleanup_pid == getpid()) {
188 char *pidf = lp_pid_file();
190 unlink(lp_pid_file());
194 if (io_error & IOERR_DEL_LIMIT)
195 code = exit_code = RERR_DEL_LIMIT;
196 if (io_error & IOERR_VANISHED)
197 code = exit_code = RERR_VANISHED;
198 if (io_error & IOERR_GENERAL || got_xfer_error)
199 code = exit_code = RERR_PARTIAL;
202 if ((code && code != RERR_RCVR_ERROR)
203 || am_daemon || (logfile_name && (am_server || !INFO_GTE(STATS, 1))))
204 log_exit(code, file, line);
209 if (DEBUG_GTE(EXIT, 1)) {
211 "_exit_cleanup(code=%d, file=%s, line=%d): "
212 "about to call exit(%d)\n",
213 unmodified_code, file, line, code);
219 if (am_server && code)
231 void cleanup_disable(void)
233 cleanup_fname = cleanup_new_fname = NULL;
234 cleanup_got_literal = 0;
238 void cleanup_set(const char *fnametmp, const char *fname, struct file_struct *file,
241 cleanup_fname = fnametmp;
242 cleanup_new_fname = fname; /* can be NULL on a partial-dir failure */
248 void cleanup_set_pid(pid_t pid)