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; |
81b07870 | 38 | extern int keep_dirlinks; |
2f03f956 | 39 | extern int make_backups; |
c786a7ae | 40 | extern struct stats stats; |
fe055c71 AT |
41 | |
42 | ||
c627d613 AT |
43 | /* |
44 | free a sums struct | |
45 | */ | |
2f03f956 | 46 | void free_sums(struct sum_struct *s) |
c627d613 | 47 | { |
298c10d5 AT |
48 | if (s->sums) free(s->sums); |
49 | free(s); | |
c627d613 AT |
50 | } |
51 | ||
52 | ||
2f03f956 | 53 | int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, |
4ecc9e6b | 54 | int flags) |
c627d613 | 55 | { |
667e72a1 AT |
56 | int updated = 0; |
57 | STRUCT_STAT st2; | |
460f6b99 | 58 | int change_uid, change_gid; |
c627d613 | 59 | |
667e72a1 | 60 | if (!st) { |
f227ffe4 WD |
61 | if (dry_run) |
62 | return 1; | |
373ef160 | 63 | if (link_stat(fname, &st2, 0) < 0) { |
d62bcc17 WD |
64 | rsyserr(FERROR, errno, "stat %s failed", |
65 | full_fname(fname)); | |
667e72a1 AT |
66 | return 0; |
67 | } | |
68 | st = &st2; | |
69 | } | |
c627d613 | 70 | |
c8d34657 | 71 | if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times)) |
38443188 WD |
72 | flags |= PERMS_SKIP_MTIME; |
73 | if (!(flags & PERMS_SKIP_MTIME) | |
4ecc9e6b | 74 | && cmp_modtime(st->st_mtime, file->modtime) != 0) { |
c8d34657 WD |
75 | int ret = set_modtime(fname, file->modtime, st->st_mode); |
76 | if (ret < 0) { | |
d62bcc17 WD |
77 | rsyserr(FERROR, errno, "failed to set times on %s", |
78 | full_fname(fname)); | |
667e72a1 AT |
79 | return 0; |
80 | } | |
c8d34657 WD |
81 | if (ret == 0) /* ret == 1 if symlink could not be set */ |
82 | updated = 1; | |
667e72a1 AT |
83 | } |
84 | ||
7b6fa00f WD |
85 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
86 | change_gid = preserve_gid && file->gid != GID_NONE | |
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 | 97 | "set uid of %s from %ld to %ld\n", |
45c49b52 | 98 | fname, |
7b6fa00f | 99 | (long)st->st_uid, (long)file->uid); |
ce37eb2d WD |
100 | } |
101 | if (change_gid) { | |
102 | rprintf(FINFO, | |
4875d6b6 | 103 | "set gid of %s from %ld to %ld\n", |
45c49b52 | 104 | fname, |
7b6fa00f | 105 | (long)st->st_gid, (long)file->gid); |
ce37eb2d WD |
106 | } |
107 | } | |
667e72a1 | 108 | if (do_lchown(fname, |
7b6fa00f 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 |
c8d34657 WD |
129 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
130 | int ret = do_chmod(fname, file->mode); | |
131 | if (ret < 0) { | |
132 | rsyserr(FERROR, errno, | |
133 | "failed to set permissions on %s", | |
134 | full_fname(fname)); | |
135 | return 0; | |
667e72a1 | 136 | } |
c8d34657 WD |
137 | if (ret == 0) /* ret == 1 if symlink could not be set */ |
138 | updated = 1; | |
667e72a1 | 139 | } |
c627d613 | 140 | #endif |
6a7cc46c | 141 | |
4ecc9e6b | 142 | if (verbose > 1 && flags & PERMS_REPORT) { |
8324bd5c WD |
143 | enum logcode code = daemon_log_format_has_i || dry_run |
144 | ? FCLIENT : FINFO; | |
667e72a1 | 145 | if (updated) |
45c49b52 | 146 | rprintf(code, "%s\n", fname); |
667e72a1 | 147 | else |
45c49b52 | 148 | rprintf(code, "%s is uptodate\n", fname); |
667e72a1 AT |
149 | } |
150 | return updated; | |
c627d613 AT |
151 | } |
152 | ||
153 | ||
34ccb63e AT |
154 | void sig_int(void) |
155 | { | |
d5a0b483 WD |
156 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
157 | * for a password, then our cleanup's sending of a SIGUSR1 | |
158 | * signal to all our children may kill ssh before it has a | |
159 | * chance to restore the tty settings (i.e. turn echo back | |
160 | * on). By sleeping for a short time, ssh gets a bigger | |
161 | * chance to do the right thing. If child processes are | |
162 | * not ssh waiting for a password, then this tiny delay | |
163 | * shouldn't hurt anything. */ | |
164 | msleep(400); | |
65417579 | 165 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
166 | } |
167 | ||
168 | ||
c95da96a AT |
169 | /* finish off a file transfer, renaming the file and setting the permissions |
170 | and ownership */ | |
4ecc9e6b | 171 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, |
997d9ea6 | 172 | int ok_to_set_time, int overwriting_basis) |
c95da96a | 173 | { |
62c9e6b3 WD |
174 | int ret; |
175 | ||
a3221d2a WD |
176 | if (inplace) { |
177 | if (verbose > 2) | |
45c49b52 | 178 | rprintf(FINFO, "finishing %s\n", fname); |
077e59b7 | 179 | goto do_set_perms; |
a3221d2a WD |
180 | } |
181 | ||
997d9ea6 | 182 | if (make_backups && overwriting_basis && !make_backup(fname)) |
e484f0cc WD |
183 | return; |
184 | ||
ebeacb36 WD |
185 | /* Change permissions before putting the file into place. */ |
186 | set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
187 | ||
c95da96a | 188 | /* move tmp file over real file */ |
45c49b52 WD |
189 | if (verbose > 2) |
190 | rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname); | |
62c9e6b3 | 191 | ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); |
3d061653 | 192 | if (ret < 0) { |
d62bcc17 | 193 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
45c49b52 WD |
194 | ret == -2 ? "copy" : "rename", |
195 | full_fname(fnametmp), fname); | |
c7c11a0d | 196 | do_unlink(fnametmp); |
077e59b7 | 197 | return; |
c95da96a | 198 | } |
ebeacb36 WD |
199 | if (ret == 0) { |
200 | /* The file was moved into place (not copied), so it's done. */ | |
201 | return; | |
202 | } | |
077e59b7 WD |
203 | do_set_perms: |
204 | set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
c95da96a | 205 | } |
c3e5e585 WD |
206 | |
207 | const char *who_am_i(void) | |
208 | { | |
ed9d969c | 209 | if (am_starting_up) |
794b0a03 | 210 | return am_server ? "server" : "client"; |
ebeacb36 | 211 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; |
c3e5e585 | 212 | } |