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da158ee3 | 1 | /* |
7445173f KB |
2 | * Copyright (c) 1988 Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
32ce521f | 5 | * %sccs.include.redist.c% |
da158ee3 DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
7445173f | 10 | "@(#) Copyright (c) 1988 Regents of the University of California.\n\ |
da158ee3 | 11 | All rights reserved.\n"; |
7445173f | 12 | #endif /* not lint */ |
da158ee3 DF |
13 | |
14 | #ifndef lint | |
0594ed17 | 15 | static char sccsid[] = "@(#)chown.c 5.18 (Berkeley) %G%"; |
7445173f | 16 | #endif /* not lint */ |
702e3fe5 | 17 | |
7445173f | 18 | #include <sys/param.h> |
69e53de7 | 19 | #include <sys/stat.h> |
f78af81d KB |
20 | #include <sys/errno.h> |
21 | #include <dirent.h> | |
a7bd3fcd | 22 | #include <fts.h> |
7445173f | 23 | #include <pwd.h> |
702e3fe5 | 24 | #include <grp.h> |
0594ed17 | 25 | #include <unistd.h> |
7445173f KB |
26 | #include <stdio.h> |
27 | #include <ctype.h> | |
0594ed17 | 28 | #include <stdlib.h> |
a7bd3fcd | 29 | #include <string.h> |
69e53de7 | 30 | |
fe46eefc MT |
31 | int ischown, uid, gid, fflag, rflag, retval; |
32 | char *gname, *myname; | |
69e53de7 BJ |
33 | |
34 | main(argc, argv) | |
7445173f KB |
35 | int argc; |
36 | char **argv; | |
69e53de7 | 37 | { |
7445173f | 38 | extern int optind; |
a7bd3fcd KB |
39 | register FTS *fts; |
40 | register FTSENT *p; | |
7445173f KB |
41 | register char *cp; |
42 | int ch; | |
69e53de7 | 43 | |
7445173f KB |
44 | myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv; |
45 | ischown = myname[2] == 'o'; | |
c76e0466 | 46 | |
7445173f KB |
47 | while ((ch = getopt(argc, argv, "Rf")) != EOF) |
48 | switch((char)ch) { | |
49 | case 'R': | |
a7bd3fcd | 50 | rflag = 1; |
7445173f | 51 | break; |
c76e0466 | 52 | case 'f': |
a7bd3fcd | 53 | fflag = 1; |
c76e0466 | 54 | break; |
7445173f KB |
55 | case '?': |
56 | default: | |
57 | usage(); | |
58 | } | |
59 | argv += optind; | |
60 | argc -= optind; | |
c76e0466 | 61 | |
7445173f KB |
62 | if (argc < 2) |
63 | usage(); | |
c76e0466 | 64 | |
a7bd3fcd | 65 | uid = gid = -1; |
7445173f | 66 | if (ischown) { |
a7bd3fcd | 67 | #ifdef SUPPORT_DOT |
7445173f KB |
68 | if (cp = index(*argv, '.')) { |
69 | *cp++ = '\0'; | |
0594ed17 | 70 | a_gid(cp); |
a7bd3fcd KB |
71 | } else |
72 | #endif | |
73 | if (cp = index(*argv, ':')) { | |
74 | *cp++ = '\0'; | |
0594ed17 | 75 | a_gid(cp); |
a7bd3fcd | 76 | } |
0594ed17 | 77 | a_uid(*argv); |
c76e0466 | 78 | } |
a7bd3fcd | 79 | else |
0594ed17 | 80 | a_gid(*argv); |
69e53de7 | 81 | |
a7bd3fcd | 82 | if (rflag) { |
5ce44ab4 | 83 | if (!(fts = fts_open(++argv, FTS_NOSTAT|FTS_PHYSICAL, 0))) { |
a7bd3fcd KB |
84 | (void)fprintf(stderr, |
85 | "%s: %s.\n", myname, strerror(errno)); | |
86 | exit(1); | |
c439a634 | 87 | } |
5ce44ab4 | 88 | while (p = fts_read(fts)) { |
a7bd3fcd KB |
89 | if (p->fts_info == FTS_D) |
90 | continue; | |
91 | if (p->fts_info == FTS_ERR) { | |
92 | error(p->fts_path); | |
93 | continue; | |
94 | } | |
95 | if (chown(p->fts_accpath, uid, gid) && !fflag) | |
96 | chownerr(p->fts_path); | |
97 | } | |
98 | exit(retval); | |
c439a634 | 99 | } |
a7bd3fcd KB |
100 | while (*++argv) |
101 | if (chown(*argv, uid, gid) && !fflag) | |
102 | chownerr(*argv); | |
7445173f | 103 | exit(retval); |
69e53de7 | 104 | } |
702e3fe5 | 105 | |
0594ed17 | 106 | a_gid(s) |
7445173f | 107 | register char *s; |
702e3fe5 | 108 | { |
0594ed17 | 109 | struct group *gr; |
7445173f KB |
110 | |
111 | if (!*s) { | |
112 | gid = -1; /* argument was "uid." */ | |
113 | return; | |
80eff57a | 114 | } |
0594ed17 KB |
115 | gname = s; |
116 | if (gr = getgrnam(s)) | |
117 | gid = gr->gr_gid; | |
7445173f | 118 | else { |
0594ed17 KB |
119 | for (; *s && isdigit(*s); ++s); |
120 | if (!*s) | |
121 | gid = atoi(gname); | |
122 | else { | |
f78af81d | 123 | (void)fprintf(stderr, "%s: unknown group id: %s\n", |
f9915d58 | 124 | myname, gname); |
a7bd3fcd | 125 | exit(1); |
c76e0466 | 126 | } |
7445173f | 127 | } |
c76e0466 SL |
128 | } |
129 | ||
0594ed17 | 130 | a_uid(s) |
7445173f | 131 | register char *s; |
c76e0466 | 132 | { |
0594ed17 KB |
133 | struct passwd *pw; |
134 | char *uname; | |
c76e0466 | 135 | |
7445173f KB |
136 | if (!*s) { |
137 | uid = -1; /* argument was ".gid" */ | |
138 | return; | |
139 | } | |
0594ed17 KB |
140 | if (pw = getpwnam(s)) |
141 | uid = pw->pw_uid; | |
7445173f | 142 | else { |
0594ed17 KB |
143 | for (uname = s; *s && isdigit(*s); ++s); |
144 | if (!*s) | |
145 | uid = atoi(uname); | |
146 | else { | |
f78af81d | 147 | (void)fprintf(stderr, |
0594ed17 | 148 | "chown: unknown user id: %s\n", uname); |
a7bd3fcd | 149 | exit(1); |
7445173f | 150 | } |
c76e0466 | 151 | } |
c76e0466 SL |
152 | } |
153 | ||
2a151187 KB |
154 | chownerr(file) |
155 | char *file; | |
156 | { | |
157 | static int euid = -1, ngroups = -1; | |
158 | ||
159 | /* check for chown without being root */ | |
f78af81d | 160 | if (errno != EPERM || uid != -1 && euid == -1 && (euid = geteuid())) { |
2a151187 KB |
161 | if (fflag) |
162 | exit(0); | |
a7bd3fcd KB |
163 | error(file); |
164 | exit(1); | |
2a151187 KB |
165 | } |
166 | /* check group membership; kernel just returns EPERM */ | |
167 | if (gid != -1 && ngroups == -1) { | |
168 | int groups[NGROUPS]; | |
169 | ||
170 | ngroups = getgroups(NGROUPS, groups); | |
171 | while (--ngroups >= 0 && gid != groups[ngroups]); | |
172 | if (ngroups < 0) { | |
173 | if (fflag) | |
174 | exit(0); | |
f78af81d | 175 | (void)fprintf(stderr, |
2a151187 KB |
176 | "%s: you are not a member of group %s.\n", |
177 | myname, gname); | |
a7bd3fcd | 178 | exit(1); |
2a151187 KB |
179 | } |
180 | } | |
a7bd3fcd KB |
181 | if (!fflag) |
182 | error(file); | |
2a151187 KB |
183 | } |
184 | ||
a7bd3fcd KB |
185 | error(name) |
186 | char *name; | |
c76e0466 | 187 | { |
a7bd3fcd KB |
188 | (void)fprintf(stderr, "%s: %s: %s\n", myname, name, strerror(errno)); |
189 | retval = 1; | |
7445173f | 190 | } |
c76e0466 | 191 | |
7445173f KB |
192 | usage() |
193 | { | |
f78af81d | 194 | (void)fprintf(stderr, "usage: %s [-Rf] %s file ...\n", myname, |
a7bd3fcd KB |
195 | ischown ? "[owner][:group]" : "group"); |
196 | exit(1); | |
702e3fe5 | 197 | } |