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 | |
ee1df1cc | 71 | if (!preserve_times || S_ISLNK(st->st_mode) |
638e1065 | 72 | || (S_ISDIR(st->st_mode) && omit_dir_times)) |
38443188 WD |
73 | flags |= PERMS_SKIP_MTIME; |
74 | if (!(flags & PERMS_SKIP_MTIME) | |
4ecc9e6b | 75 | && cmp_modtime(st->st_mtime, file->modtime) != 0) { |
82471e68 | 76 | if (set_modtime(fname,file->modtime) != 0) { |
d62bcc17 WD |
77 | rsyserr(FERROR, errno, "failed to set times on %s", |
78 | full_fname(fname)); | |
667e72a1 AT |
79 | return 0; |
80 | } | |
a174e1ed | 81 | updated = 1; |
667e72a1 AT |
82 | } |
83 | ||
460f6b99 | 84 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
a60e2dca | 85 | change_gid = preserve_gid && file->gid != GID_NONE |
7352b873 | 86 | && st->st_gid != file->gid; |
4f5b0756 | 87 | #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK |
a41a1e87 WD |
88 | if (S_ISLNK(st->st_mode)) |
89 | ; | |
90 | else | |
91 | #endif | |
460f6b99 | 92 | if (change_uid || change_gid) { |
62c9e6b3 | 93 | if (verbose > 2) { |
ce37eb2d WD |
94 | if (change_uid) { |
95 | rprintf(FINFO, | |
4875d6b6 WD |
96 | "set uid of %s from %ld to %ld\n", |
97 | safe_fname(fname), | |
98 | (long)st->st_uid, (long)file->uid); | |
ce37eb2d WD |
99 | } |
100 | if (change_gid) { | |
101 | rprintf(FINFO, | |
4875d6b6 WD |
102 | "set gid of %s from %ld to %ld\n", |
103 | safe_fname(fname), | |
104 | (long)st->st_gid, (long)file->gid); | |
ce37eb2d WD |
105 | } |
106 | } | |
667e72a1 | 107 | if (do_lchown(fname, |
a174e1ed WD |
108 | change_uid ? file->uid : st->st_uid, |
109 | change_gid ? file->gid : st->st_gid) != 0) { | |
460f6b99 | 110 | /* shouldn't have attempted to change uid or gid |
a174e1ed | 111 | * unless have the privilege */ |
d62bcc17 | 112 | rsyserr(FERROR, errno, "%s %s failed", |
a174e1ed | 113 | change_uid ? "chown" : "chgrp", |
d62bcc17 | 114 | full_fname(fname)); |
460f6b99 | 115 | return 0; |
667e72a1 | 116 | } |
a5827a28 | 117 | /* a lchown had been done - we have to re-stat if the |
dd096ae0 WD |
118 | * destination had the setuid or setgid bits set due |
119 | * to the side effect of the chown call */ | |
a5827a28 | 120 | if (st->st_mode & (S_ISUID | S_ISGID)) { |
81b07870 WD |
121 | link_stat(fname, st, |
122 | keep_dirlinks && S_ISDIR(st->st_mode)); | |
a5827a28 | 123 | } |
460f6b99 | 124 | updated = 1; |
667e72a1 | 125 | } |
c627d613 | 126 | |
4f5b0756 | 127 | #ifdef HAVE_CHMOD |
972a3619 | 128 | if (!S_ISLNK(st->st_mode)) { |
b0d791bb | 129 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
972a3619 | 130 | updated = 1; |
b0d791bb | 131 | if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { |
d62bcc17 WD |
132 | rsyserr(FERROR, errno, "failed to set permissions on %s", |
133 | full_fname(fname)); | |
972a3619 DD |
134 | return 0; |
135 | } | |
667e72a1 AT |
136 | } |
137 | } | |
c627d613 | 138 | #endif |
6a7cc46c | 139 | |
4ecc9e6b | 140 | if (verbose > 1 && flags & PERMS_REPORT) { |
8324bd5c WD |
141 | enum logcode code = daemon_log_format_has_i || dry_run |
142 | ? FCLIENT : FINFO; | |
667e72a1 | 143 | if (updated) |
8324bd5c | 144 | rprintf(code, "%s\n", safe_fname(fname)); |
667e72a1 | 145 | else |
8324bd5c | 146 | rprintf(code, "%s is uptodate\n", safe_fname(fname)); |
667e72a1 AT |
147 | } |
148 | return updated; | |
c627d613 AT |
149 | } |
150 | ||
151 | ||
34ccb63e AT |
152 | void sig_int(void) |
153 | { | |
d5a0b483 WD |
154 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
155 | * for a password, then our cleanup's sending of a SIGUSR1 | |
156 | * signal to all our children may kill ssh before it has a | |
157 | * chance to restore the tty settings (i.e. turn echo back | |
158 | * on). By sleeping for a short time, ssh gets a bigger | |
159 | * chance to do the right thing. If child processes are | |
160 | * not ssh waiting for a password, then this tiny delay | |
161 | * shouldn't hurt anything. */ | |
162 | msleep(400); | |
65417579 | 163 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
164 | } |
165 | ||
166 | ||
c95da96a AT |
167 | /* finish off a file transfer, renaming the file and setting the permissions |
168 | and ownership */ | |
4ecc9e6b | 169 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, |
997d9ea6 | 170 | int ok_to_set_time, int overwriting_basis) |
c95da96a | 171 | { |
62c9e6b3 WD |
172 | int ret; |
173 | ||
a3221d2a WD |
174 | if (inplace) { |
175 | if (verbose > 2) | |
4875d6b6 | 176 | rprintf(FINFO, "finishing %s\n", safe_fname(fname)); |
077e59b7 | 177 | goto do_set_perms; |
a3221d2a WD |
178 | } |
179 | ||
997d9ea6 | 180 | if (make_backups && overwriting_basis && !make_backup(fname)) |
e484f0cc WD |
181 | return; |
182 | ||
ebeacb36 WD |
183 | /* Change permissions before putting the file into place. */ |
184 | set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
185 | ||
c95da96a | 186 | /* move tmp file over real file */ |
4875d6b6 WD |
187 | if (verbose > 2) { |
188 | rprintf(FINFO, "renaming %s to %s\n", | |
189 | safe_fname(fnametmp), safe_fname(fname)); | |
190 | } | |
62c9e6b3 | 191 | ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); |
3d061653 | 192 | if (ret < 0) { |
d62bcc17 | 193 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
62c9e6b3 | 194 | ret == -2 ? "copy" : "rename", |
4875d6b6 | 195 | full_fname(fnametmp), safe_fname(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 | } |