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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 | |
9f639210 DD |
29 | /** |
30 | * Close all open sockets and files, allowing a (somewhat) graceful | |
31 | * shutdown() of socket connections. This eliminates the abortive | |
32 | * TCP RST sent by a Winsock-based system when the close() occurs. | |
33 | **/ | |
18d6b679 | 34 | void close_all(void) |
9f639210 DD |
35 | { |
36 | #ifdef SHUTDOWN_ALL_SOCKETS | |
37 | int max_fd; | |
38 | int fd; | |
39 | int ret; | |
40 | struct stat st; | |
41 | ||
42 | max_fd = sysconf(_SC_OPEN_MAX) - 1; | |
43 | for (fd = max_fd; fd >= 0; fd--) { | |
44 | ret = fstat(fd,&st); | |
45 | if (fstat(fd,&st) == 0) { | |
8186ae6b | 46 | if (is_a_socket(fd)) |
9f639210 | 47 | ret = shutdown(fd, 2); |
9f639210 DD |
48 | ret = close(fd); |
49 | } | |
50 | } | |
51 | #endif | |
52 | } | |
53 | ||
e0fde757 MP |
54 | /** |
55 | * @file cleanup.c | |
56 | * | |
57 | * Code for handling interrupted transfers. Depending on the @c | |
58 | * --partial option, we may either delete the temporary file, or go | |
59 | * ahead and overwrite the destination. This second behaviour only | |
60 | * occurs if we've sent literal data and therefore hopefully made | |
61 | * progress on the transfer. | |
62 | **/ | |
63 | ||
64 | /** | |
65 | * Set to True once literal data has been sent across the link for the | |
66 | * current file. (????) | |
67 | * | |
68 | * Handling the cleanup when a transfer is interrupted is tricky when | |
69 | * --partial is selected. We need to ensure that the partial file is | |
70 | * kept if any real data has been transferred. | |
71 | **/ | |
8186ae6b | 72 | int cleanup_got_literal = 0; |
2f03f956 AT |
73 | |
74 | static char *cleanup_fname; | |
75 | static char *cleanup_new_fname; | |
76 | static struct file_struct *cleanup_file; | |
b6609caf | 77 | static int cleanup_fd_r, cleanup_fd_w; |
65fc84b3 | 78 | static pid_t cleanup_pid = 0; |
2f03f956 | 79 | |
19b27a48 | 80 | pid_t cleanup_child_pid = -1; |
ef1aa910 | 81 | |
e0fde757 | 82 | /** |
b0f451eb | 83 | * Eventually calls exit(), passing @p code, therefore does not return. |
e0fde757 MP |
84 | * |
85 | * @param code one of the RERR_* codes from errcode.h. | |
86 | **/ | |
a9766ef1 | 87 | void _exit_cleanup(int code, const char *file, int line) |
2f03f956 | 88 | { |
9098bbf3 | 89 | int ocode = code; |
b765ec32 DD |
90 | static int inside_cleanup = 0; |
91 | ||
aa2c47d8 | 92 | if (inside_cleanup > 10) { |
b765ec32 DD |
93 | /* prevent the occasional infinite recursion */ |
94 | return; | |
95 | } | |
aa2c47d8 | 96 | inside_cleanup++; |
2f03f956 AT |
97 | |
98 | signal(SIGUSR1, SIG_IGN); | |
8b35435f | 99 | signal(SIGUSR2, SIG_IGN); |
2f03f956 | 100 | |
6e86c951 WD |
101 | if (verbose > 3) { |
102 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): entered\n", | |
9098bbf3 | 103 | code, file, line); |
6e86c951 | 104 | } |
9098bbf3 | 105 | |
19b27a48 AT |
106 | if (cleanup_child_pid != -1) { |
107 | int status; | |
108 | if (waitpid(cleanup_child_pid, &status, WNOHANG) == cleanup_child_pid) { | |
109 | status = WEXITSTATUS(status); | |
8186ae6b WD |
110 | if (status > code) |
111 | code = status; | |
19b27a48 AT |
112 | } |
113 | } | |
114 | ||
a7260c40 WD |
115 | if (cleanup_got_literal && cleanup_fname && keep_partial |
116 | && handle_partial_dir(cleanup_new_fname, PDIR_CREATE)) { | |
2f03f956 AT |
117 | char *fname = cleanup_fname; |
118 | cleanup_fname = NULL; | |
b6609caf WD |
119 | if (cleanup_fd_r != -1) |
120 | close(cleanup_fd_r); | |
09e2bbce WD |
121 | if (cleanup_fd_w != -1) { |
122 | flush_write_file(cleanup_fd_w); | |
b6609caf | 123 | close(cleanup_fd_w); |
09e2bbce | 124 | } |
d45898df WD |
125 | finish_transfer(cleanup_new_fname, fname, cleanup_file, 0, |
126 | !partial_dir); | |
2f03f956 | 127 | } |
ef732c3b | 128 | io_flush(FULL_FLUSH); |
2f03f956 AT |
129 | if (cleanup_fname) |
130 | do_unlink(cleanup_fname); | |
8186ae6b | 131 | if (code) |
2f03f956 | 132 | kill_all(SIGUSR1); |
65fc84b3 | 133 | if (cleanup_pid && cleanup_pid == getpid()) { |
27d3cdbc | 134 | char *pidf = lp_pid_file(); |
8186ae6b | 135 | if (pidf && *pidf) |
27d3cdbc | 136 | unlink(lp_pid_file()); |
27d3cdbc | 137 | } |
9b73d1c0 | 138 | |
6e35c72f WD |
139 | if (code == 0) { |
140 | if ((io_error & ~IOERR_VANISHED) || log_got_error) | |
141 | code = RERR_PARTIAL; | |
142 | else if (io_error) | |
143 | code = RERR_VANISHED; | |
ff81e809 AT |
144 | } |
145 | ||
8186ae6b WD |
146 | if (code) |
147 | log_exit(code, file, line); | |
19b27a48 | 148 | |
6e86c951 WD |
149 | if (verbose > 2) { |
150 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", | |
9098bbf3 | 151 | ocode, file, line, code); |
6e86c951 | 152 | } |
9098bbf3 | 153 | |
9f639210 | 154 | close_all(); |
2f03f956 AT |
155 | exit(code); |
156 | } | |
157 | ||
158 | void cleanup_disable(void) | |
159 | { | |
160 | cleanup_fname = NULL; | |
161 | cleanup_got_literal = 0; | |
162 | } | |
163 | ||
164 | ||
c6b81a98 | 165 | void cleanup_set(char *fnametmp, char *fname, struct file_struct *file, |
b6609caf | 166 | int fd_r, int fd_w) |
2f03f956 AT |
167 | { |
168 | cleanup_fname = fnametmp; | |
169 | cleanup_new_fname = fname; | |
170 | cleanup_file = file; | |
b6609caf WD |
171 | cleanup_fd_r = fd_r; |
172 | cleanup_fd_w = fd_w; | |
2f03f956 | 173 | } |
8638dd48 | 174 | |
65fc84b3 | 175 | void cleanup_set_pid(pid_t pid) |
8638dd48 DD |
176 | { |
177 | cleanup_pid = pid; | |
178 | } |