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0f78b815 WD |
1 | /* |
2 | * End-of-run cleanup routines. | |
3 | * | |
4 | * Copyright (C) 1996-2000 Andrew Tridgell | |
5 | * Copyright (C) 1996 Paul Mackerras | |
6 | * Copyright (C) 2002 Martin Pool | |
d3d07a5e | 7 | * Copyright (C) 2003-2008 Wayne Davison |
0f78b815 WD |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
8e41b68e WD |
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. | |
0f78b815 WD |
13 | * |
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. | |
18 | * | |
e7c67065 | 19 | * You should have received a copy of the GNU General Public License along |
4fd842f9 | 20 | * with this program; if not, visit the http://fsf.org website. |
0f78b815 | 21 | */ |
2f03f956 AT |
22 | |
23 | #include "rsync.h" | |
24 | ||
1cfcb8af WD |
25 | extern int am_server; |
26 | extern int am_daemon; | |
6e86c951 WD |
27 | extern int io_error; |
28 | extern int keep_partial; | |
3f0211b6 | 29 | extern int got_xfer_error; |
59d2cd5a | 30 | extern int progress_is_active; |
d45898df | 31 | extern char *partial_dir; |
1cfcb8af | 32 | extern char *logfile_name; |
6e86c951 | 33 | |
44e604f4 | 34 | #ifdef HAVE_SIGACTION |
2b28968d WD |
35 | static struct sigaction sigact; |
36 | #endif | |
37 | ||
9f639210 DD |
38 | /** |
39 | * Close all open sockets and files, allowing a (somewhat) graceful | |
40 | * shutdown() of socket connections. This eliminates the abortive | |
41 | * TCP RST sent by a Winsock-based system when the close() occurs. | |
42 | **/ | |
18d6b679 | 43 | void close_all(void) |
9f639210 DD |
44 | { |
45 | #ifdef SHUTDOWN_ALL_SOCKETS | |
46 | int max_fd; | |
47 | int fd; | |
48 | int ret; | |
58fef0ac | 49 | STRUCT_STAT st; |
9f639210 DD |
50 | |
51 | max_fd = sysconf(_SC_OPEN_MAX) - 1; | |
52 | for (fd = max_fd; fd >= 0; fd--) { | |
58fef0ac | 53 | if ((ret = do_fstat(fd, &st)) == 0) { |
8186ae6b | 54 | if (is_a_socket(fd)) |
9f639210 | 55 | ret = shutdown(fd, 2); |
9f639210 DD |
56 | ret = close(fd); |
57 | } | |
58 | } | |
59 | #endif | |
60 | } | |
61 | ||
e0fde757 MP |
62 | /** |
63 | * @file cleanup.c | |
64 | * | |
65 | * Code for handling interrupted transfers. Depending on the @c | |
66 | * --partial option, we may either delete the temporary file, or go | |
67 | * ahead and overwrite the destination. This second behaviour only | |
68 | * occurs if we've sent literal data and therefore hopefully made | |
69 | * progress on the transfer. | |
70 | **/ | |
71 | ||
72 | /** | |
73 | * Set to True once literal data has been sent across the link for the | |
74 | * current file. (????) | |
75 | * | |
76 | * Handling the cleanup when a transfer is interrupted is tricky when | |
77 | * --partial is selected. We need to ensure that the partial file is | |
78 | * kept if any real data has been transferred. | |
79 | **/ | |
8186ae6b | 80 | int cleanup_got_literal = 0; |
2f03f956 | 81 | |
93204cca WD |
82 | static const char *cleanup_fname; |
83 | static const char *cleanup_new_fname; | |
2f03f956 | 84 | static struct file_struct *cleanup_file; |
b6609caf | 85 | static int cleanup_fd_r, cleanup_fd_w; |
65fc84b3 | 86 | static pid_t cleanup_pid = 0; |
2f03f956 | 87 | |
19b27a48 | 88 | pid_t cleanup_child_pid = -1; |
ef1aa910 | 89 | |
e0fde757 | 90 | /** |
b0f451eb | 91 | * Eventually calls exit(), passing @p code, therefore does not return. |
e0fde757 MP |
92 | * |
93 | * @param code one of the RERR_* codes from errcode.h. | |
94 | **/ | |
b1b54199 | 95 | NORETURN void _exit_cleanup(int code, const char *file, int line) |
2f03f956 | 96 | { |
154c345d WD |
97 | static int cleanup_step = 0; |
98 | static int exit_code = 0; | |
99 | static int unmodified_code = 0; | |
2f03f956 | 100 | |
2b28968d WD |
101 | SIGACTION(SIGUSR1, SIG_IGN); |
102 | SIGACTION(SIGUSR2, SIG_IGN); | |
2f03f956 | 103 | |
154c345d WD |
104 | if (exit_code) /* Preserve first error code when recursing. */ |
105 | code = exit_code; | |
b1b54199 | 106 | |
969cdffb WD |
107 | /* If this is the exit at the end of the run, the server side |
108 | * should not attempt to output a message (see log.c). */ | |
109 | if (am_server && code == 0) | |
110 | am_server = 2; | |
111 | ||
154c345d WD |
112 | /* Some of our actions might cause a recursive call back here, so we |
113 | * keep track of where we are in the cleanup and never repeat a step. */ | |
114 | switch (cleanup_step) { | |
e3794138 | 115 | #include "case_N.h" /* case 0: cleanup_step++; */ |
154c345d WD |
116 | |
117 | exit_code = unmodified_code = code; | |
9098bbf3 | 118 | |
59d2cd5a WD |
119 | if (progress_is_active && exit_code && !am_server) |
120 | rprintf(FINFO, "\n"); | |
121 | ||
154c345d WD |
122 | if (verbose > 3) { |
123 | rprintf(FINFO, | |
124 | "_exit_cleanup(code=%d, file=%s, line=%d): entered\n", | |
125 | code, file, line); | |
19b27a48 | 126 | } |
19b27a48 | 127 | |
154c345d | 128 | /* FALLTHROUGH */ |
e3794138 | 129 | #include "case_N.h" |
154c345d WD |
130 | |
131 | if (cleanup_child_pid != -1) { | |
132 | int status; | |
133 | int pid = wait_process(cleanup_child_pid, &status, WNOHANG); | |
134 | if (pid == cleanup_child_pid) { | |
135 | status = WEXITSTATUS(status); | |
136 | if (status > code) | |
137 | code = exit_code = status; | |
138 | } | |
09e2bbce | 139 | } |
9b73d1c0 | 140 | |
154c345d | 141 | /* FALLTHROUGH */ |
e3794138 | 142 | #include "case_N.h" |
154c345d WD |
143 | |
144 | if (cleanup_got_literal && cleanup_fname && cleanup_new_fname | |
145 | && keep_partial && handle_partial_dir(cleanup_new_fname, PDIR_CREATE)) { | |
93204cca | 146 | const char *fname = cleanup_fname; |
154c345d WD |
147 | cleanup_fname = NULL; |
148 | if (cleanup_fd_r != -1) | |
149 | close(cleanup_fd_r); | |
150 | if (cleanup_fd_w != -1) { | |
151 | flush_write_file(cleanup_fd_w); | |
152 | close(cleanup_fd_w); | |
153 | } | |
16edf865 | 154 | finish_transfer(cleanup_new_fname, fname, NULL, NULL, |
154c345d WD |
155 | cleanup_file, 0, !partial_dir); |
156 | } | |
157 | ||
158 | /* FALLTHROUGH */ | |
e3794138 | 159 | #include "case_N.h" |
154c345d WD |
160 | |
161 | io_flush(FULL_FLUSH); | |
162 | ||
163 | /* FALLTHROUGH */ | |
e3794138 | 164 | #include "case_N.h" |
154c345d WD |
165 | |
166 | if (cleanup_fname) | |
167 | do_unlink(cleanup_fname); | |
168 | if (code) | |
169 | kill_all(SIGUSR1); | |
170 | if (cleanup_pid && cleanup_pid == getpid()) { | |
171 | char *pidf = lp_pid_file(); | |
172 | if (pidf && *pidf) | |
173 | unlink(lp_pid_file()); | |
174 | } | |
175 | ||
176 | if (code == 0) { | |
177 | if (io_error & IOERR_DEL_LIMIT) | |
178 | code = exit_code = RERR_DEL_LIMIT; | |
179 | if (io_error & IOERR_VANISHED) | |
180 | code = exit_code = RERR_VANISHED; | |
3f0211b6 | 181 | if (io_error & IOERR_GENERAL || got_xfer_error) |
154c345d WD |
182 | code = exit_code = RERR_PARTIAL; |
183 | } | |
184 | ||
185 | if (code || am_daemon || (logfile_name && (am_server || !verbose))) | |
186 | log_exit(code, file, line); | |
187 | ||
188 | /* FALLTHROUGH */ | |
e3794138 | 189 | #include "case_N.h" |
154c345d WD |
190 | |
191 | if (verbose > 2) { | |
192 | rprintf(FINFO, | |
193 | "_exit_cleanup(code=%d, file=%s, line=%d): " | |
194 | "about to call exit(%d)\n", | |
195 | unmodified_code, file, line, code); | |
196 | } | |
197 | ||
198 | /* FALLTHROUGH */ | |
e3794138 | 199 | #include "case_N.h" |
ff81e809 | 200 | |
377d22ab WD |
201 | if (am_server && code) |
202 | msleep(100); | |
154c345d | 203 | close_all(); |
19b27a48 | 204 | |
154c345d WD |
205 | /* FALLTHROUGH */ |
206 | default: | |
207 | break; | |
6e86c951 | 208 | } |
9098bbf3 | 209 | |
2f03f956 AT |
210 | exit(code); |
211 | } | |
212 | ||
213 | void cleanup_disable(void) | |
214 | { | |
03dbc0b8 | 215 | cleanup_fname = cleanup_new_fname = NULL; |
2f03f956 AT |
216 | cleanup_got_literal = 0; |
217 | } | |
218 | ||
219 | ||
93204cca | 220 | void cleanup_set(const char *fnametmp, const char *fname, struct file_struct *file, |
b6609caf | 221 | int fd_r, int fd_w) |
2f03f956 | 222 | { |
03dbc0b8 WD |
223 | cleanup_fname = fnametmp; |
224 | cleanup_new_fname = fname; /* can be NULL on a partial-dir failure */ | |
2f03f956 | 225 | cleanup_file = file; |
b6609caf WD |
226 | cleanup_fd_r = fd_r; |
227 | cleanup_fd_w = fd_w; | |
2f03f956 | 228 | } |
8638dd48 | 229 | |
65fc84b3 | 230 | void cleanup_set_pid(pid_t pid) |
8638dd48 DD |
231 | { |
232 | cleanup_pid = pid; | |
233 | } |