From: William F. Jolitz Date: Fri, 19 Apr 1991 04:15:55 +0000 (-0800) Subject: 386BSD 0.1 development X-Git-Tag: 386BSD-0.1~1701 X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/366534c2ee8923325452f81442026668deae292e?ds=inline 386BSD 0.1 development Work on file usr/src/usr.sbin/chown/chown.c Co-Authored-By: Lynne Greer Jolitz Synthesized-from: 386BSD-0.1 --- diff --git a/usr/src/usr.sbin/chown/chown.c b/usr/src/usr.sbin/chown/chown.c new file mode 100644 index 0000000000..694f8e4cc6 --- /dev/null +++ b/usr/src/usr.sbin/chown/chown.c @@ -0,0 +1,223 @@ +/* + * Copyright (c) 1988 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +char copyright[] = +"@(#) Copyright (c) 1988 Regents of the University of California.\n\ + All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)chown.c 5.18 (Berkeley) 3/9/91"; +#endif /* not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int ischown, uid, gid, fflag, rflag, retval; +char *gname, *myname; + +main(argc, argv) + int argc; + char **argv; +{ + extern int optind; + register FTS *fts; + register FTSENT *p; + register char *cp; + int ch; + + myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv; + ischown = myname[2] == 'o'; + + while ((ch = getopt(argc, argv, "Rf")) != EOF) + switch((char)ch) { + case 'R': + rflag = 1; + break; + case 'f': + fflag = 1; + break; + case '?': + default: + usage(); + } + argv += optind; + argc -= optind; + + if (argc < 2) + usage(); + + uid = gid = -1; + if (ischown) { +#ifdef SUPPORT_DOT + if (cp = index(*argv, '.')) { + *cp++ = '\0'; + a_gid(cp); + } else +#endif + if (cp = index(*argv, ':')) { + *cp++ = '\0'; + a_gid(cp); + } + a_uid(*argv); + } + else + a_gid(*argv); + + if (rflag) { + if (!(fts = fts_open(++argv, FTS_NOSTAT|FTS_PHYSICAL, 0))) { + (void)fprintf(stderr, + "%s: %s.\n", myname, strerror(errno)); + exit(1); + } + while (p = fts_read(fts)) { + if (p->fts_info == FTS_D) + continue; + if (p->fts_info == FTS_ERR) { + error(p->fts_path); + continue; + } + if (chown(p->fts_accpath, uid, gid) && !fflag) + chownerr(p->fts_path); + } + exit(retval); + } + while (*++argv) + if (chown(*argv, uid, gid) && !fflag) + chownerr(*argv); + exit(retval); +} + +a_gid(s) + register char *s; +{ + struct group *gr; + + if (!*s) { + gid = -1; /* argument was "uid." */ + return; + } + gname = s; + if (gr = getgrnam(s)) + gid = gr->gr_gid; + else { + for (; *s && isdigit(*s); ++s); + if (!*s) + gid = atoi(gname); + else { + (void)fprintf(stderr, "%s: unknown group id: %s\n", + myname, gname); + exit(1); + } + } +} + +a_uid(s) + register char *s; +{ + struct passwd *pw; + char *uname; + + if (!*s) { + uid = -1; /* argument was ".gid" */ + return; + } + if (pw = getpwnam(s)) + uid = pw->pw_uid; + else { + for (uname = s; *s && isdigit(*s); ++s); + if (!*s) + uid = atoi(uname); + else { + (void)fprintf(stderr, + "chown: unknown user id: %s\n", uname); + exit(1); + } + } +} + +chownerr(file) + char *file; +{ + static int euid = -1, ngroups = -1; + + /* check for chown without being root */ + if (errno != EPERM || uid != -1 && euid == -1 && (euid = geteuid())) { + if (fflag) + exit(0); + error(file); + exit(1); + } + /* check group membership; kernel just returns EPERM */ + if (gid != -1 && ngroups == -1) { + int groups[NGROUPS]; + + ngroups = getgroups(NGROUPS, groups); + while (--ngroups >= 0 && gid != groups[ngroups]); + if (ngroups < 0) { + if (fflag) + exit(0); + (void)fprintf(stderr, + "%s: you are not a member of group %s.\n", + myname, gname); + exit(1); + } + } + if (!fflag) + error(file); +} + +error(name) + char *name; +{ + (void)fprintf(stderr, "%s: %s: %s\n", myname, name, strerror(errno)); + retval = 1; +} + +usage() +{ + (void)fprintf(stderr, "usage: %s [-Rf] %s file ...\n", myname, + ischown ? "[owner][:group]" : "group"); + exit(1); +}