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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 | |
5ce44ab4 | 15 | static char sccsid[] = "@(#)chown.c 5.17 (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> |
7445173f KB |
25 | #include <stdio.h> |
26 | #include <ctype.h> | |
a7bd3fcd | 27 | #include <string.h> |
69e53de7 | 28 | |
fe46eefc MT |
29 | int ischown, uid, gid, fflag, rflag, retval; |
30 | char *gname, *myname; | |
69e53de7 BJ |
31 | |
32 | main(argc, argv) | |
7445173f KB |
33 | int argc; |
34 | char **argv; | |
69e53de7 | 35 | { |
7445173f | 36 | extern int optind; |
a7bd3fcd KB |
37 | register FTS *fts; |
38 | register FTSENT *p; | |
7445173f KB |
39 | register char *cp; |
40 | int ch; | |
69e53de7 | 41 | |
7445173f KB |
42 | myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv; |
43 | ischown = myname[2] == 'o'; | |
c76e0466 | 44 | |
7445173f KB |
45 | while ((ch = getopt(argc, argv, "Rf")) != EOF) |
46 | switch((char)ch) { | |
47 | case 'R': | |
a7bd3fcd | 48 | rflag = 1; |
7445173f | 49 | break; |
c76e0466 | 50 | case 'f': |
a7bd3fcd | 51 | fflag = 1; |
c76e0466 | 52 | break; |
7445173f KB |
53 | case '?': |
54 | default: | |
55 | usage(); | |
56 | } | |
57 | argv += optind; | |
58 | argc -= optind; | |
c76e0466 | 59 | |
7445173f KB |
60 | if (argc < 2) |
61 | usage(); | |
c76e0466 | 62 | |
a7bd3fcd | 63 | uid = gid = -1; |
7445173f | 64 | if (ischown) { |
a7bd3fcd | 65 | #ifdef SUPPORT_DOT |
7445173f KB |
66 | if (cp = index(*argv, '.')) { |
67 | *cp++ = '\0'; | |
68 | setgid(cp); | |
a7bd3fcd KB |
69 | } else |
70 | #endif | |
71 | if (cp = index(*argv, ':')) { | |
72 | *cp++ = '\0'; | |
73 | setgid(cp); | |
74 | } | |
7445173f | 75 | setuid(*argv); |
c76e0466 | 76 | } |
a7bd3fcd | 77 | else |
7445173f | 78 | setgid(*argv); |
69e53de7 | 79 | |
a7bd3fcd | 80 | if (rflag) { |
5ce44ab4 | 81 | if (!(fts = fts_open(++argv, FTS_NOSTAT|FTS_PHYSICAL, 0))) { |
a7bd3fcd KB |
82 | (void)fprintf(stderr, |
83 | "%s: %s.\n", myname, strerror(errno)); | |
84 | exit(1); | |
c439a634 | 85 | } |
5ce44ab4 | 86 | while (p = fts_read(fts)) { |
a7bd3fcd KB |
87 | if (p->fts_info == FTS_D) |
88 | continue; | |
89 | if (p->fts_info == FTS_ERR) { | |
90 | error(p->fts_path); | |
91 | continue; | |
92 | } | |
93 | if (chown(p->fts_accpath, uid, gid) && !fflag) | |
94 | chownerr(p->fts_path); | |
95 | } | |
96 | exit(retval); | |
c439a634 | 97 | } |
a7bd3fcd KB |
98 | while (*++argv) |
99 | if (chown(*argv, uid, gid) && !fflag) | |
100 | chownerr(*argv); | |
7445173f | 101 | exit(retval); |
69e53de7 | 102 | } |
702e3fe5 | 103 | |
7445173f KB |
104 | setgid(s) |
105 | register char *s; | |
702e3fe5 | 106 | { |
7445173f | 107 | struct group *gr, *getgrnam(); |
7445173f KB |
108 | |
109 | if (!*s) { | |
110 | gid = -1; /* argument was "uid." */ | |
111 | return; | |
80eff57a | 112 | } |
f9915d58 | 113 | for (gname = s; *s && isdigit(*s); ++s); |
7445173f | 114 | if (!*s) |
f9915d58 | 115 | gid = atoi(gname); |
7445173f | 116 | else { |
f9915d58 | 117 | if (!(gr = getgrnam(gname))) { |
f78af81d | 118 | (void)fprintf(stderr, "%s: unknown group id: %s\n", |
f9915d58 | 119 | myname, gname); |
a7bd3fcd | 120 | exit(1); |
c76e0466 | 121 | } |
7445173f KB |
122 | gid = gr->gr_gid; |
123 | } | |
c76e0466 SL |
124 | } |
125 | ||
7445173f KB |
126 | setuid(s) |
127 | register char *s; | |
c76e0466 | 128 | { |
7445173f KB |
129 | struct passwd *pwd, *getpwnam(); |
130 | char *beg; | |
c76e0466 | 131 | |
7445173f KB |
132 | if (!*s) { |
133 | uid = -1; /* argument was ".gid" */ | |
134 | return; | |
135 | } | |
136 | for (beg = s; *s && isdigit(*s); ++s); | |
137 | if (!*s) | |
138 | uid = atoi(beg); | |
139 | else { | |
140 | if (!(pwd = getpwnam(beg))) { | |
f78af81d KB |
141 | (void)fprintf(stderr, |
142 | "chown: unknown user id: %s\n", beg); | |
a7bd3fcd | 143 | exit(1); |
7445173f KB |
144 | } |
145 | uid = pwd->pw_uid; | |
c76e0466 | 146 | } |
c76e0466 SL |
147 | } |
148 | ||
2a151187 KB |
149 | chownerr(file) |
150 | char *file; | |
151 | { | |
152 | static int euid = -1, ngroups = -1; | |
153 | ||
154 | /* check for chown without being root */ | |
f78af81d | 155 | if (errno != EPERM || uid != -1 && euid == -1 && (euid = geteuid())) { |
2a151187 KB |
156 | if (fflag) |
157 | exit(0); | |
a7bd3fcd KB |
158 | error(file); |
159 | exit(1); | |
2a151187 KB |
160 | } |
161 | /* check group membership; kernel just returns EPERM */ | |
162 | if (gid != -1 && ngroups == -1) { | |
163 | int groups[NGROUPS]; | |
164 | ||
165 | ngroups = getgroups(NGROUPS, groups); | |
166 | while (--ngroups >= 0 && gid != groups[ngroups]); | |
167 | if (ngroups < 0) { | |
168 | if (fflag) | |
169 | exit(0); | |
f78af81d | 170 | (void)fprintf(stderr, |
2a151187 KB |
171 | "%s: you are not a member of group %s.\n", |
172 | myname, gname); | |
a7bd3fcd | 173 | exit(1); |
2a151187 KB |
174 | } |
175 | } | |
a7bd3fcd KB |
176 | if (!fflag) |
177 | error(file); | |
2a151187 KB |
178 | } |
179 | ||
a7bd3fcd KB |
180 | error(name) |
181 | char *name; | |
c76e0466 | 182 | { |
a7bd3fcd KB |
183 | (void)fprintf(stderr, "%s: %s: %s\n", myname, name, strerror(errno)); |
184 | retval = 1; | |
7445173f | 185 | } |
c76e0466 | 186 | |
7445173f KB |
187 | usage() |
188 | { | |
f78af81d | 189 | (void)fprintf(stderr, "usage: %s [-Rf] %s file ...\n", myname, |
a7bd3fcd KB |
190 | ischown ? "[owner][:group]" : "group"); |
191 | exit(1); | |
702e3fe5 | 192 | } |