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ef1aa910 | 1 | /* -*- c-file-style: "linux" -*- |
6e86c951 | 2 | |
ef1aa910 | 3 | Copyright (C) 1996-2000 by Andrew Tridgell |
2f03f956 | 4 | Copyright (C) Paul Mackerras 1996 |
e0fde757 | 5 | Copyright (C) 2002 by Martin Pool |
6e86c951 | 6 | |
2f03f956 AT |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
6e86c951 | 11 | |
2f03f956 AT |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
6e86c951 | 16 | |
2f03f956 AT |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include "rsync.h" | |
23 | ||
6e86c951 WD |
24 | extern int io_error; |
25 | extern int keep_partial; | |
26 | extern int log_got_error; | |
d45898df | 27 | extern char *partial_dir; |
6e86c951 | 28 | |
2b28968d WD |
29 | #if defined HAVE_SIGACTION && defined HAVE_SIGPROCMASK |
30 | static struct sigaction sigact; | |
31 | #endif | |
32 | ||
9f639210 DD |
33 | /** |
34 | * Close all open sockets and files, allowing a (somewhat) graceful | |
35 | * shutdown() of socket connections. This eliminates the abortive | |
36 | * TCP RST sent by a Winsock-based system when the close() occurs. | |
37 | **/ | |
18d6b679 | 38 | void close_all(void) |
9f639210 DD |
39 | { |
40 | #ifdef SHUTDOWN_ALL_SOCKETS | |
41 | int max_fd; | |
42 | int fd; | |
43 | int ret; | |
58fef0ac | 44 | STRUCT_STAT st; |
9f639210 DD |
45 | |
46 | max_fd = sysconf(_SC_OPEN_MAX) - 1; | |
47 | for (fd = max_fd; fd >= 0; fd--) { | |
58fef0ac | 48 | if ((ret = do_fstat(fd, &st)) == 0) { |
8186ae6b | 49 | if (is_a_socket(fd)) |
9f639210 | 50 | ret = shutdown(fd, 2); |
9f639210 DD |
51 | ret = close(fd); |
52 | } | |
53 | } | |
54 | #endif | |
55 | } | |
56 | ||
e0fde757 MP |
57 | /** |
58 | * @file cleanup.c | |
59 | * | |
60 | * Code for handling interrupted transfers. Depending on the @c | |
61 | * --partial option, we may either delete the temporary file, or go | |
62 | * ahead and overwrite the destination. This second behaviour only | |
63 | * occurs if we've sent literal data and therefore hopefully made | |
64 | * progress on the transfer. | |
65 | **/ | |
66 | ||
67 | /** | |
68 | * Set to True once literal data has been sent across the link for the | |
69 | * current file. (????) | |
70 | * | |
71 | * Handling the cleanup when a transfer is interrupted is tricky when | |
72 | * --partial is selected. We need to ensure that the partial file is | |
73 | * kept if any real data has been transferred. | |
74 | **/ | |
8186ae6b | 75 | int cleanup_got_literal = 0; |
2f03f956 AT |
76 | |
77 | static char *cleanup_fname; | |
78 | static char *cleanup_new_fname; | |
79 | static struct file_struct *cleanup_file; | |
b6609caf | 80 | static int cleanup_fd_r, cleanup_fd_w; |
65fc84b3 | 81 | static pid_t cleanup_pid = 0; |
2f03f956 | 82 | |
19b27a48 | 83 | pid_t cleanup_child_pid = -1; |
ef1aa910 | 84 | |
e0fde757 | 85 | /** |
b0f451eb | 86 | * Eventually calls exit(), passing @p code, therefore does not return. |
e0fde757 MP |
87 | * |
88 | * @param code one of the RERR_* codes from errcode.h. | |
89 | **/ | |
a9766ef1 | 90 | void _exit_cleanup(int code, const char *file, int line) |
2f03f956 | 91 | { |
9098bbf3 | 92 | int ocode = code; |
b765ec32 DD |
93 | static int inside_cleanup = 0; |
94 | ||
aa2c47d8 | 95 | if (inside_cleanup > 10) { |
b765ec32 DD |
96 | /* prevent the occasional infinite recursion */ |
97 | return; | |
98 | } | |
aa2c47d8 | 99 | inside_cleanup++; |
2f03f956 | 100 | |
2b28968d WD |
101 | SIGACTION(SIGUSR1, SIG_IGN); |
102 | SIGACTION(SIGUSR2, SIG_IGN); | |
2f03f956 | 103 | |
6e86c951 WD |
104 | if (verbose > 3) { |
105 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): entered\n", | |
45c49b52 | 106 | code, file, line); |
6e86c951 | 107 | } |
9098bbf3 | 108 | |
19b27a48 AT |
109 | if (cleanup_child_pid != -1) { |
110 | int status; | |
ef1f6280 WD |
111 | if (wait_process(cleanup_child_pid, &status, WNOHANG) |
112 | == cleanup_child_pid) { | |
19b27a48 | 113 | status = WEXITSTATUS(status); |
8186ae6b WD |
114 | if (status > code) |
115 | code = status; | |
19b27a48 AT |
116 | } |
117 | } | |
118 | ||
a7260c40 WD |
119 | if (cleanup_got_literal && cleanup_fname && keep_partial |
120 | && handle_partial_dir(cleanup_new_fname, PDIR_CREATE)) { | |
2f03f956 AT |
121 | char *fname = cleanup_fname; |
122 | cleanup_fname = NULL; | |
b6609caf WD |
123 | if (cleanup_fd_r != -1) |
124 | close(cleanup_fd_r); | |
09e2bbce WD |
125 | if (cleanup_fd_w != -1) { |
126 | flush_write_file(cleanup_fd_w); | |
b6609caf | 127 | close(cleanup_fd_w); |
09e2bbce | 128 | } |
12fa790e WD |
129 | finish_transfer(cleanup_new_fname, fname, NULL, |
130 | cleanup_file, 0, !partial_dir); | |
2f03f956 | 131 | } |
ef732c3b | 132 | io_flush(FULL_FLUSH); |
2f03f956 AT |
133 | if (cleanup_fname) |
134 | do_unlink(cleanup_fname); | |
8186ae6b | 135 | if (code) |
2f03f956 | 136 | kill_all(SIGUSR1); |
65fc84b3 | 137 | if (cleanup_pid && cleanup_pid == getpid()) { |
27d3cdbc | 138 | char *pidf = lp_pid_file(); |
8186ae6b | 139 | if (pidf && *pidf) |
27d3cdbc | 140 | unlink(lp_pid_file()); |
27d3cdbc | 141 | } |
9b73d1c0 | 142 | |
6e35c72f | 143 | if (code == 0) { |
054abde2 WD |
144 | if (io_error & IOERR_DEL_LIMIT) |
145 | code = RERR_DEL_LIMIT; | |
146 | if (io_error & IOERR_VANISHED) | |
6e35c72f | 147 | code = RERR_VANISHED; |
054abde2 WD |
148 | if (io_error & IOERR_GENERAL || log_got_error) |
149 | code = RERR_PARTIAL; | |
ff81e809 AT |
150 | } |
151 | ||
8186ae6b WD |
152 | if (code) |
153 | log_exit(code, file, line); | |
19b27a48 | 154 | |
6e86c951 WD |
155 | if (verbose > 2) { |
156 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", | |
45c49b52 | 157 | ocode, file, line, code); |
6e86c951 | 158 | } |
9098bbf3 | 159 | |
9f639210 | 160 | close_all(); |
2f03f956 AT |
161 | exit(code); |
162 | } | |
163 | ||
164 | void cleanup_disable(void) | |
165 | { | |
166 | cleanup_fname = NULL; | |
167 | cleanup_got_literal = 0; | |
168 | } | |
169 | ||
170 | ||
c6b81a98 | 171 | void cleanup_set(char *fnametmp, char *fname, struct file_struct *file, |
b6609caf | 172 | int fd_r, int fd_w) |
2f03f956 | 173 | { |
3d7cc571 | 174 | cleanup_fname = fname ? fnametmp : NULL; |
2f03f956 AT |
175 | cleanup_new_fname = fname; |
176 | cleanup_file = file; | |
b6609caf WD |
177 | cleanup_fd_r = fd_r; |
178 | cleanup_fd_w = fd_w; | |
2f03f956 | 179 | } |
8638dd48 | 180 | |
65fc84b3 | 181 | void cleanup_set_pid(pid_t pid) |
8638dd48 DD |
182 | { |
183 | cleanup_pid = pid; | |
184 | } |