Commit | Line | Data |
---|---|---|
ef1aa910 MP |
1 | /* -*- c-file-style: "linux" -*- |
2 | ||
3 | Copyright (C) 1996-2000 by Andrew Tridgell | |
2f03f956 | 4 | Copyright (C) Paul Mackerras 1996 |
e0fde757 | 5 | Copyright (C) 2002 by Martin Pool |
2f03f956 AT |
6 | |
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. | |
11 | ||
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. | |
16 | ||
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 | ||
e0fde757 MP |
24 | /** |
25 | * @file cleanup.c | |
26 | * | |
27 | * Code for handling interrupted transfers. Depending on the @c | |
28 | * --partial option, we may either delete the temporary file, or go | |
29 | * ahead and overwrite the destination. This second behaviour only | |
30 | * occurs if we've sent literal data and therefore hopefully made | |
31 | * progress on the transfer. | |
32 | **/ | |
33 | ||
34 | /** | |
35 | * Set to True once literal data has been sent across the link for the | |
36 | * current file. (????) | |
37 | * | |
38 | * Handling the cleanup when a transfer is interrupted is tricky when | |
39 | * --partial is selected. We need to ensure that the partial file is | |
40 | * kept if any real data has been transferred. | |
41 | **/ | |
2f03f956 AT |
42 | int cleanup_got_literal=0; |
43 | ||
44 | static char *cleanup_fname; | |
45 | static char *cleanup_new_fname; | |
46 | static struct file_struct *cleanup_file; | |
c6b81a98 AT |
47 | static int cleanup_fd1, cleanup_fd2; |
48 | static struct map_struct *cleanup_buf; | |
8638dd48 | 49 | static int cleanup_pid = 0; |
9bd65976 | 50 | extern int io_error; |
2f03f956 | 51 | |
19b27a48 | 52 | pid_t cleanup_child_pid = -1; |
ef1aa910 | 53 | |
e0fde757 | 54 | /** |
b0f451eb | 55 | * Eventually calls exit(), passing @p code, therefore does not return. |
e0fde757 MP |
56 | * |
57 | * @param code one of the RERR_* codes from errcode.h. | |
58 | **/ | |
a9766ef1 | 59 | void _exit_cleanup(int code, const char *file, int line) |
2f03f956 | 60 | { |
9098bbf3 | 61 | int ocode = code; |
2f03f956 | 62 | extern int keep_partial; |
ff81e809 | 63 | extern int log_got_error; |
b765ec32 DD |
64 | static int inside_cleanup = 0; |
65 | ||
66 | if (inside_cleanup != 0) { | |
67 | /* prevent the occasional infinite recursion */ | |
68 | return; | |
69 | } | |
70 | inside_cleanup = 1; | |
2f03f956 AT |
71 | |
72 | signal(SIGUSR1, SIG_IGN); | |
8b35435f | 73 | signal(SIGUSR2, SIG_IGN); |
2f03f956 | 74 | |
9098bbf3 MP |
75 | if (verbose > 3) |
76 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): entered\n", | |
77 | code, file, line); | |
78 | ||
19b27a48 AT |
79 | if (cleanup_child_pid != -1) { |
80 | int status; | |
81 | if (waitpid(cleanup_child_pid, &status, WNOHANG) == cleanup_child_pid) { | |
82 | status = WEXITSTATUS(status); | |
83 | if (status > code) code = status; | |
84 | } | |
85 | } | |
86 | ||
2f03f956 AT |
87 | if (cleanup_got_literal && cleanup_fname && keep_partial) { |
88 | char *fname = cleanup_fname; | |
89 | cleanup_fname = NULL; | |
c6b81a98 AT |
90 | if (cleanup_buf) unmap_file(cleanup_buf); |
91 | if (cleanup_fd1 != -1) close(cleanup_fd1); | |
92 | if (cleanup_fd2 != -1) close(cleanup_fd2); | |
2f03f956 AT |
93 | finish_transfer(cleanup_new_fname, fname, cleanup_file); |
94 | } | |
95 | io_flush(); | |
96 | if (cleanup_fname) | |
97 | do_unlink(cleanup_fname); | |
98 | if (code) { | |
99 | kill_all(SIGUSR1); | |
100 | } | |
27d3cdbc AT |
101 | if ((cleanup_pid != 0) && (cleanup_pid == (int) getpid())) { |
102 | char *pidf = lp_pid_file(); | |
103 | if (pidf && *pidf) { | |
104 | unlink(lp_pid_file()); | |
105 | } | |
106 | } | |
9b73d1c0 | 107 | |
19b27a48 AT |
108 | if (code == 0 && (io_error || log_got_error)) { |
109 | code = RERR_PARTIAL; | |
ff81e809 AT |
110 | } |
111 | ||
19b27a48 AT |
112 | if (code) log_exit(code, file, line); |
113 | ||
9098bbf3 MP |
114 | if (verbose > 2) |
115 | rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", | |
116 | ocode, file, line, code); | |
117 | ||
2f03f956 AT |
118 | exit(code); |
119 | } | |
120 | ||
121 | void cleanup_disable(void) | |
122 | { | |
123 | cleanup_fname = NULL; | |
124 | cleanup_got_literal = 0; | |
125 | } | |
126 | ||
127 | ||
c6b81a98 AT |
128 | void cleanup_set(char *fnametmp, char *fname, struct file_struct *file, |
129 | struct map_struct *buf, int fd1, int fd2) | |
2f03f956 AT |
130 | { |
131 | cleanup_fname = fnametmp; | |
132 | cleanup_new_fname = fname; | |
133 | cleanup_file = file; | |
c6b81a98 AT |
134 | cleanup_buf = buf; |
135 | cleanup_fd1 = fd1; | |
136 | cleanup_fd2 = fd2; | |
2f03f956 | 137 | } |
8638dd48 DD |
138 | |
139 | void cleanup_set_pid(int pid) | |
140 | { | |
141 | cleanup_pid = pid; | |
142 | } |