Commit | Line | Data |
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7a2fd68b | 1 | /* |
c627d613 AT |
2 | Copyright (C) Andrew Tridgell 1996 |
3 | Copyright (C) Paul Mackerras 1996 | |
7a2fd68b | 4 | |
c627d613 AT |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
7a2fd68b | 9 | |
c627d613 AT |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
7a2fd68b | 14 | |
c627d613 AT |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
2f03f956 AT |
20 | /* this file contains code used by more than one part of the rsync |
21 | process */ | |
c627d613 | 22 | |
2f03f956 | 23 | #include "rsync.h" |
43a481dc | 24 | |
c627d613 | 25 | extern int verbose; |
c627d613 | 26 | extern int dry_run; |
8324bd5c | 27 | extern int daemon_log_format_has_i; |
2f03f956 | 28 | extern int preserve_times; |
82471e68 | 29 | extern int omit_dir_times; |
7b8356d0 | 30 | extern int am_root; |
794b0a03 | 31 | extern int am_server; |
c3e5e585 WD |
32 | extern int am_sender; |
33 | extern int am_generator; | |
ed9d969c | 34 | extern int am_starting_up; |
2f03f956 AT |
35 | extern int preserve_uid; |
36 | extern int preserve_gid; | |
c786a7ae | 37 | extern int inplace; |
ee1df1cc | 38 | extern int recurse; |
81b07870 | 39 | extern int keep_dirlinks; |
2f03f956 | 40 | extern int make_backups; |
c786a7ae | 41 | extern struct stats stats; |
fe055c71 AT |
42 | |
43 | ||
c627d613 AT |
44 | /* |
45 | free a sums struct | |
46 | */ | |
2f03f956 | 47 | void free_sums(struct sum_struct *s) |
c627d613 | 48 | { |
298c10d5 AT |
49 | if (s->sums) free(s->sums); |
50 | free(s); | |
c627d613 AT |
51 | } |
52 | ||
53 | ||
2f03f956 | 54 | int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, |
4ecc9e6b | 55 | int flags) |
c627d613 | 56 | { |
667e72a1 AT |
57 | int updated = 0; |
58 | STRUCT_STAT st2; | |
460f6b99 | 59 | int change_uid, change_gid; |
c627d613 | 60 | |
667e72a1 | 61 | if (!st) { |
f227ffe4 WD |
62 | if (dry_run) |
63 | return 1; | |
373ef160 | 64 | if (link_stat(fname, &st2, 0) < 0) { |
d62bcc17 WD |
65 | rsyserr(FERROR, errno, "stat %s failed", |
66 | full_fname(fname)); | |
667e72a1 AT |
67 | return 0; |
68 | } | |
69 | st = &st2; | |
70 | } | |
c627d613 | 71 | |
ee1df1cc | 72 | if (!preserve_times || S_ISLNK(st->st_mode) |
638e1065 | 73 | || (S_ISDIR(st->st_mode) && omit_dir_times)) |
38443188 WD |
74 | flags |= PERMS_SKIP_MTIME; |
75 | if (!(flags & PERMS_SKIP_MTIME) | |
4ecc9e6b | 76 | && cmp_modtime(st->st_mtime, file->modtime) != 0) { |
82471e68 | 77 | if (set_modtime(fname,file->modtime) != 0) { |
d62bcc17 WD |
78 | rsyserr(FERROR, errno, "failed to set times on %s", |
79 | full_fname(fname)); | |
667e72a1 AT |
80 | return 0; |
81 | } | |
a174e1ed | 82 | updated = 1; |
667e72a1 AT |
83 | } |
84 | ||
460f6b99 | 85 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
a60e2dca | 86 | change_gid = preserve_gid && file->gid != GID_NONE |
7352b873 | 87 | && st->st_gid != file->gid; |
4f5b0756 | 88 | #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK |
a41a1e87 WD |
89 | if (S_ISLNK(st->st_mode)) |
90 | ; | |
91 | else | |
92 | #endif | |
460f6b99 | 93 | if (change_uid || change_gid) { |
62c9e6b3 | 94 | if (verbose > 2) { |
ce37eb2d WD |
95 | if (change_uid) { |
96 | rprintf(FINFO, | |
4875d6b6 WD |
97 | "set uid of %s from %ld to %ld\n", |
98 | safe_fname(fname), | |
99 | (long)st->st_uid, (long)file->uid); | |
ce37eb2d WD |
100 | } |
101 | if (change_gid) { | |
102 | rprintf(FINFO, | |
4875d6b6 WD |
103 | "set gid of %s from %ld to %ld\n", |
104 | safe_fname(fname), | |
105 | (long)st->st_gid, (long)file->gid); | |
ce37eb2d WD |
106 | } |
107 | } | |
667e72a1 | 108 | if (do_lchown(fname, |
a174e1ed WD |
109 | change_uid ? file->uid : st->st_uid, |
110 | change_gid ? file->gid : st->st_gid) != 0) { | |
460f6b99 | 111 | /* shouldn't have attempted to change uid or gid |
a174e1ed | 112 | * unless have the privilege */ |
d62bcc17 | 113 | rsyserr(FERROR, errno, "%s %s failed", |
a174e1ed | 114 | change_uid ? "chown" : "chgrp", |
d62bcc17 | 115 | full_fname(fname)); |
460f6b99 | 116 | return 0; |
667e72a1 | 117 | } |
a5827a28 | 118 | /* a lchown had been done - we have to re-stat if the |
dd096ae0 WD |
119 | * destination had the setuid or setgid bits set due |
120 | * to the side effect of the chown call */ | |
a5827a28 | 121 | if (st->st_mode & (S_ISUID | S_ISGID)) { |
81b07870 WD |
122 | link_stat(fname, st, |
123 | keep_dirlinks && S_ISDIR(st->st_mode)); | |
a5827a28 | 124 | } |
460f6b99 | 125 | updated = 1; |
667e72a1 | 126 | } |
c627d613 | 127 | |
4f5b0756 | 128 | #ifdef HAVE_CHMOD |
972a3619 | 129 | if (!S_ISLNK(st->st_mode)) { |
b0d791bb | 130 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
972a3619 | 131 | updated = 1; |
b0d791bb | 132 | if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { |
d62bcc17 WD |
133 | rsyserr(FERROR, errno, "failed to set permissions on %s", |
134 | full_fname(fname)); | |
972a3619 DD |
135 | return 0; |
136 | } | |
667e72a1 AT |
137 | } |
138 | } | |
c627d613 | 139 | #endif |
6a7cc46c | 140 | |
4ecc9e6b | 141 | if (verbose > 1 && flags & PERMS_REPORT) { |
8324bd5c WD |
142 | enum logcode code = daemon_log_format_has_i || dry_run |
143 | ? FCLIENT : FINFO; | |
667e72a1 | 144 | if (updated) |
8324bd5c | 145 | rprintf(code, "%s\n", safe_fname(fname)); |
667e72a1 | 146 | else |
8324bd5c | 147 | rprintf(code, "%s is uptodate\n", safe_fname(fname)); |
667e72a1 AT |
148 | } |
149 | return updated; | |
c627d613 AT |
150 | } |
151 | ||
152 | ||
34ccb63e AT |
153 | void sig_int(void) |
154 | { | |
d5a0b483 WD |
155 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
156 | * for a password, then our cleanup's sending of a SIGUSR1 | |
157 | * signal to all our children may kill ssh before it has a | |
158 | * chance to restore the tty settings (i.e. turn echo back | |
159 | * on). By sleeping for a short time, ssh gets a bigger | |
160 | * chance to do the right thing. If child processes are | |
161 | * not ssh waiting for a password, then this tiny delay | |
162 | * shouldn't hurt anything. */ | |
163 | msleep(400); | |
65417579 | 164 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
165 | } |
166 | ||
167 | ||
c95da96a AT |
168 | /* finish off a file transfer, renaming the file and setting the permissions |
169 | and ownership */ | |
4ecc9e6b | 170 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, |
997d9ea6 | 171 | int ok_to_set_time, int overwriting_basis) |
c95da96a | 172 | { |
62c9e6b3 WD |
173 | int ret; |
174 | ||
a3221d2a WD |
175 | if (inplace) { |
176 | if (verbose > 2) | |
4875d6b6 | 177 | rprintf(FINFO, "finishing %s\n", safe_fname(fname)); |
077e59b7 | 178 | goto do_set_perms; |
a3221d2a WD |
179 | } |
180 | ||
997d9ea6 | 181 | if (make_backups && overwriting_basis && !make_backup(fname)) |
e484f0cc WD |
182 | return; |
183 | ||
ebeacb36 WD |
184 | /* Change permissions before putting the file into place. */ |
185 | set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
186 | ||
c95da96a | 187 | /* move tmp file over real file */ |
4875d6b6 WD |
188 | if (verbose > 2) { |
189 | rprintf(FINFO, "renaming %s to %s\n", | |
190 | safe_fname(fnametmp), safe_fname(fname)); | |
191 | } | |
62c9e6b3 | 192 | ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); |
3d061653 | 193 | if (ret < 0) { |
d62bcc17 | 194 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
62c9e6b3 | 195 | ret == -2 ? "copy" : "rename", |
4875d6b6 | 196 | full_fname(fnametmp), safe_fname(fname)); |
c7c11a0d | 197 | do_unlink(fnametmp); |
077e59b7 | 198 | return; |
c95da96a | 199 | } |
ebeacb36 WD |
200 | if (ret == 0) { |
201 | /* The file was moved into place (not copied), so it's done. */ | |
202 | return; | |
203 | } | |
077e59b7 WD |
204 | do_set_perms: |
205 | set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
c95da96a | 206 | } |
c3e5e585 WD |
207 | |
208 | const char *who_am_i(void) | |
209 | { | |
ed9d969c | 210 | if (am_starting_up) |
794b0a03 | 211 | return am_server ? "server" : "client"; |
ebeacb36 | 212 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; |
c3e5e585 | 213 | } |