1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Mini chown/chmod/chgrp implementation for busybox
*
*
* Copyright (C) 1999 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "internal.h"
#define BB_DECLARE_EXTERN
#define bb_need_invalid_option
#include "messages.c"
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
static uid_t uid = -1;
static gid_t gid = -1;
static int whichApp;
static char* invocationName=NULL;
static char* theMode=NULL;
#define CHGRP_APP 1
#define CHOWN_APP 2
#define CHMOD_APP 3
static const char chgrp_usage[] = "chgrp [OPTION]... GROUP FILE...\n\n"
"Change the group membership of each FILE to GROUP.\n"
"\nOptions:\n\t-R\tchange files and directories recursively\n";
static const char chown_usage[] = "chown [OPTION]... OWNER[.[GROUP] FILE...\n\n"
"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
"\nOptions:\n\t-R\tchange files and directories recursively\n";
static const char chmod_usage[] = "chmod [-R] MODE[,MODE]... FILE...\n\n"
"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
"one or more of the letters rwxst.\n\n"
"\nOptions:\n\t-R\tchange files and directories recursively.\n";
static int fileAction(const char *fileName, struct stat* statbuf)
{
switch (whichApp) {
case CHGRP_APP:
case CHOWN_APP:
#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
if (lchown(fileName, (whichApp==CHOWN_APP)? uid : statbuf->st_uid,
(gid==-1)? statbuf->st_gid : gid) == 0)
#else
if (chown(fileName, (whichApp==CHOWN_APP)? uid : statbuf->st_uid,
(gid==-1)? statbuf->st_gid : gid) == 0)
#endif
{
return( TRUE);
}
break;
case CHMOD_APP:
/* Parse the specified modes */
if ( parse_mode(theMode, &(statbuf->st_mode)) == FALSE ) {
fprintf(stderr, "%s: unknown mode: %s\n", invocationName, theMode);
exit( FALSE);
}
if (chmod(fileName, statbuf->st_mode) == 0)
return( TRUE);
break;
}
perror(fileName);
return( FALSE);
}
int chmod_chown_chgrp_main(int argc, char **argv)
{
int recursiveFlag=FALSE;
char *groupName;
char *p;
const char *appUsage;
whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
appUsage = (whichApp==CHOWN_APP)? chown_usage : (whichApp==CHMOD_APP)? chmod_usage : chgrp_usage;
if (argc < 2)
usage( appUsage);
invocationName = *argv;
argc--;
argv++;
/* Parse options */
while (**argv == '-') {
while (*++(*argv)) switch (**argv) {
case 'R':
recursiveFlag = TRUE;
break;
default:
fprintf(stderr, invalid_option, invocationName, **argv);
usage( appUsage);
}
argc--;
argv++;
}
if ( whichApp == CHMOD_APP ) {
theMode = *argv;
} else {
/* Find the selected group */
if ( whichApp==CHGRP_APP ) {
groupName = *argv;
gid = strtoul(groupName, &p, 10); /* maybe it's already numeric */
if (groupName == p)
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else {
groupName = strchr(*argv, '.');
if (groupName) {
*groupName++ = '\0';
gid = strtoul(groupName, &p, 10);
if (groupName == p)
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else
gid = -1;
}
/* Find the selected user (if appropriate) */
if (whichApp==CHOWN_APP) {
uid = strtoul(*argv, &p, 10); /* if numeric ...*/
if (*argv == p)
uid = my_getpwnam(*argv);
if (uid == -1) {
fprintf(stderr, "%s: unknown user name: %s\n", invocationName, *argv);
exit( FALSE);
}
}
}
/* Ok, ready to do the deed now */
if (argc <= 1) {
fprintf(stderr, "%s: too few arguments\n", invocationName);
exit( FALSE);
}
while (argc-- > 1) {
if (recursiveAction( *(++argv), recursiveFlag, TRUE, FALSE, fileAction, fileAction)==FALSE)
exit( FALSE);
}
exit(TRUE);
bad_group:
fprintf(stderr, "%s: unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
}
|
