diff options
Diffstat (limited to 'usr.sbin/chown')
-rw-r--r-- | usr.sbin/chown/Makefile | 9 | ||||
-rw-r--r-- | usr.sbin/chown/chgrp.1 | 136 | ||||
-rw-r--r-- | usr.sbin/chown/chown.8 | 149 | ||||
-rw-r--r-- | usr.sbin/chown/chown.c | 273 |
4 files changed, 567 insertions, 0 deletions
diff --git a/usr.sbin/chown/Makefile b/usr.sbin/chown/Makefile new file mode 100644 index 0000000..084b4bc --- /dev/null +++ b/usr.sbin/chown/Makefile @@ -0,0 +1,9 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= chown +CFLAGS+=-DSUPPORT_DOT +MAN1= chgrp.0 +MAN8= chown.0 +LINKS= ${BINDIR}/chown /usr/bin/chgrp + +.include <bsd.prog.mk> diff --git a/usr.sbin/chown/chgrp.1 b/usr.sbin/chown/chgrp.1 new file mode 100644 index 0000000..1adcb80 --- /dev/null +++ b/usr.sbin/chown/chgrp.1 @@ -0,0 +1,136 @@ +.\" Copyright (c) 1983, 1990, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" 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. +.\" +.\" @(#)chgrp.1 8.3 (Berkeley) 3/31/94 +.\" +.Dd March 31, 1994 +.Dt CHGRP 1 +.Os BSD 4.2 +.Sh NAME +.Nm chgrp +.Nd change group +.Sh SYNOPSIS +.Nm chgrp +.Oo +.Fl R +.Op Fl H | Fl L | Fl P +.Oc +.Op Fl f +.Ar group +.Ar files ... +.Sh DESCRIPTION +The chgrp utility sets the group ID of the file named by each +.Ar file +operand to the +.Ar group +ID specified by the group operand. +.Pp +Options: +.Bl -tag -width Ds +.It Fl H +If the +.Fl R +option is specified, symbolic links on the command line are followed. +(Symbolic links encountered in the tree traversal are not followed.) +.It Fl L +If the +.Fl R +option is specified, all symbolic links are followed. +.It Fl P +If the +.Fl R +option is specified, no symbolic links are followed. +.It Fl R +Change the group ID for the file hierarchies rooted +in the files instead of just the files themselves. +.It Fl f +The force option ignores errors, except for usage errors and doesn't +query about strange modes (unless the user does not have proper permissions). +.El +.Pp +Symbolic links don't have groups, so unless the +.Fl H +or +.Fl L +option is set, +.Nm chgrp +on a symbolic link always succeeds and has no effect. +The +.Fl H , +.Fl L +and +.Fl P +options are ignored unless the +.Fl R +option is specified. +In addition, these options override each other and the +command's actions are determined by the last one specified. +.Pp +The +.Ar group +operand can be either a group name from the group database, +or a numeric group ID. +If a group name is also a numeric group ID, the operand is used as a +group name. +.Pp +The user invoking +.Nm chgrp +must belong to the specified group and be the owner of the file, +or be the super-user. +.Pp +The +.Nm chgrp +utility exits 0 on success, and >0 if an error occurs. +.Sh COMPATIBILITY +Previous versions of the +.Nm chgrp +utility changed the group of symbolic links specified on the command +line. +In this system, symbolic links do not have groups. +.Sh FILES +.Bl -tag -width /etc/group -compact +.It Pa /etc/group +Group ID file +.El +.Sh SEE ALSO +.Xr chown 2 , +.Xr group 5 , +.Xr passwd 5 , +.Xr fts 3 , +.Xr symlink 7 , +.Xr chown 8 +.Sh STANDARDS +The +.Nm chgrp +utility is expected to be POSIX 1003.2 compatible. diff --git a/usr.sbin/chown/chown.8 b/usr.sbin/chown/chown.8 new file mode 100644 index 0000000..f0cd533 --- /dev/null +++ b/usr.sbin/chown/chown.8 @@ -0,0 +1,149 @@ +.\" Copyright (c) 1990, 1991, 1993, 1994 +.\" The 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. +.\" +.\" @(#)chown.8 8.3 (Berkeley) 3/31/94 +.\" +.Dd March 31, 1994 +.Dt CHOWN 8 +.Os BSD 4 +.Sh NAME +.Nm chown +.Nd change file owner and group +.Sh SYNOPSIS +.Nm chown +.Oo +.Fl R +.Op Fl H | Fl L | Fl P +.Oc +.Op Fl f +.Ar owner Op Ar :group +.Ar file ... +.Nm chown +.Oo +.Fl R +.Op Fl H | Fl L | Fl P +.Oc +.Op Fl f +.Ar :group +.Ar file ... +.Sh DESCRIPTION +.Nm Chown +sets the user ID and/or the group ID of the specified files. +.Pp +The options are as follows: +.Bl -tag -width Ds +.It Fl H +If the +.Fl R +option is specified, symbolic links on the command line are followed. +(Symbolic links encountered in the tree traversal are not followed.) +.It Fl L +If the +.Fl R +option is specified, all symbolic links are followed. +.It Fl P +If the +.Fl R +option is specified, no symbolic links are followed. +.It Fl R +Change the user ID and/or the group ID for the file hierarchies rooted +in the files instead of just the files themselves. +.It Fl f +Don't report any failure to change file owner or group, nor modify +the exit status to reflect such failures. +.El +.Pp +Symbolic links don't have owners, so unless the +.Fl H +or +.Fl L +option is set, +.Nm chown +on a symbolic link always succeeds and has no effect. +The +.Fl H , +.Fl L +and +.Fl P +options are ignored unless the +.Fl R +option is specified. +In addition, these options override each other and the +command's actions are determined by the last one specified. +.Pp +The +.Ar owner +and +.Ar group +operands are both optional, however, one must be specified. +If the +.Ar group +operand is specified, it must be preceded by a colon (``:'') character. +.Pp +The +.Ar owner +may be either a numeric user ID or a user name. +If a user name is also a numeric user ID, the operand is used as a +user name. +The +.Ar group +may be either a numeric group ID or a group name. +If a group name is also a numeric group ID, the operand is used as a +group name. +.Pp +The ownership of a file may only be altered by a super-user for +obvious security reasons. +.Pp +The +.Nm chown +utility exits 0 on success, and >0 if an error occurs. +.Sh COMPATIBILITY +Previous versions of the +.Nm chown +utility used the dot (``.'') character to distinguish the group name. +This has been changed to be a colon (``:'') character so that user and +group names may contain the dot character. +.Pp +Previous versions of the +.Nm chown +utility changed the owner of symbolic links specified on the command +line. +In this system, symbolic links do not have owners. +.Sh SEE ALSO +.Xr chgrp 1 , +.Xr find 1 , +.Xr chown 2 , +.Xr fts 3 , +.Xr symlink 7 +.Sh STANDARDS +The +.Nm chown +command is expected to be POSIX 1003.2 compliant. diff --git a/usr.sbin/chown/chown.c b/usr.sbin/chown/chown.c new file mode 100644 index 0000000..9121777 --- /dev/null +++ b/usr.sbin/chown/chown.c @@ -0,0 +1,273 @@ +/* + * Copyright (c) 1988, 1993, 1994 + * The 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 +static char copyright[] = +"@(#) Copyright (c) 1988, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)chown.c 8.8 (Berkeley) 4/4/94"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/stat.h> + +#include <ctype.h> +#include <dirent.h> +#include <err.h> +#include <errno.h> +#include <fts.h> +#include <grp.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +void a_gid __P((char *)); +void a_uid __P((char *)); +void chownerr __P((char *)); +u_long id __P((char *, char *)); +void usage __P((void)); + +uid_t uid; +gid_t gid; +int Rflag, ischown, fflag; +char *gname, *myname; + +int +main(argc, argv) + int argc; + char *argv[]; +{ + FTS *ftsp; + FTSENT *p; + int Hflag, Lflag, Pflag, ch, fts_options, hflag, rval; + char *cp; + + myname = (cp = rindex(*argv, '/')) ? cp + 1 : *argv; + ischown = myname[2] == 'o'; + + Hflag = Lflag = Pflag = hflag = 0; + while ((ch = getopt(argc, argv, "HLPRfh")) != EOF) + switch (ch) { + case 'H': + Hflag = 1; + Lflag = Pflag = 0; + break; + case 'L': + Lflag = 1; + Hflag = Pflag = 0; + break; + case 'P': + Pflag = 1; + Hflag = Lflag = 0; + break; + case 'R': + Rflag = 1; + break; + case 'f': + fflag = 1; + break; + case 'h': + /* + * In System V (and probably POSIX.2) the -h option + * causes chown/chgrp to change the owner/group of + * the symbolic link. 4.4BSD's symbolic links don't + * have owners/groups, so it's an undocumented noop. + * Do syntax checking, though. + */ + hflag = 1; + break; + case '?': + default: + usage(); + } + argv += optind; + argc -= optind; + + if (argc < 2) + usage(); + + fts_options = FTS_PHYSICAL; + if (Rflag) { + if (hflag) + errx(1, + "the -R and -h options may not be specified together."); + if (Hflag) + fts_options |= FTS_COMFOLLOW; + if (Lflag) { + fts_options &= ~FTS_PHYSICAL; + fts_options |= FTS_LOGICAL; + } + } + + uid = gid = -1; + if (ischown) { +#ifdef SUPPORT_DOT + if ((cp = strchr(*argv, '.')) != NULL) { + *cp++ = '\0'; + a_gid(cp); + } else +#endif + if ((cp = strchr(*argv, ':')) != NULL) { + *cp++ = '\0'; + a_gid(cp); + } + a_uid(*argv); + } else + a_gid(*argv); + + if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL) + err(1, NULL); + + for (rval = 0; (p = fts_read(ftsp)) != NULL;) { + switch (p->fts_info) { + case FTS_D: + if (Rflag) /* Change it at FTS_DP. */ + continue; + fts_set(ftsp, p, FTS_SKIP); + break; + case FTS_DNR: /* Warn, chown, continue. */ + warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); + rval = 1; + break; + case FTS_ERR: /* Warn, continue. */ + case FTS_NS: + warnx("%s: %s", p->fts_path, strerror(p->fts_errno)); + rval = 1; + continue; + case FTS_SL: /* Ignore. */ + case FTS_SLNONE: + /* + * The only symlinks that end up here are ones that + * don't point to anything and ones that we found + * doing a physical walk. + */ + continue; + default: + break; + } + if (chown(p->fts_accpath, uid, gid) && !fflag) { + chownerr(p->fts_path); + rval = 1; + } + } + if (errno) + err(1, "fts_read"); + exit(rval); +} + +void +a_gid(s) + char *s; +{ + struct group *gr; + + if (*s == '\0') /* Argument was "uid[:.]". */ + return; + gname = s; + gid = ((gr = getgrnam(s)) == NULL) ? id(s, "group") : gr->gr_gid; +} + +void +a_uid(s) + char *s; +{ + struct passwd *pw; + + if (*s == '\0') /* Argument was "[:.]gid". */ + return; + uid = ((pw = getpwnam(s)) == NULL) ? id(s, "user") : pw->pw_uid; +} + +u_long +id(name, type) + char *name, *type; +{ + u_long val; + char *ep; + + /* + * XXX + * We know that uid_t's and gid_t's are unsigned longs. + */ + errno = 0; + val = strtoul(name, &ep, 10); + if (errno) + err(1, "%s", name); + if (*ep != '\0') + errx(1, "%s: illegal %s name", name, type); + return (val); +} + +void +chownerr(file) + char *file; +{ + static int euid = -1, ngroups = -1; + int groups[NGROUPS]; + + /* Check for chown without being root. */ + if (errno != EPERM || + uid != -1 && euid == -1 && (euid = geteuid()) != 0) { + if (fflag) + exit(0); + err(1, "%s", file); + } + + /* Check group membership; kernel just returns EPERM. */ + if (gid != -1 && ngroups == -1) { + ngroups = getgroups(NGROUPS, groups); + while (--ngroups >= 0 && gid != groups[ngroups]); + if (ngroups < 0) { + if (fflag) + exit(0); + errx(1, "you are not a member of group %s", gname); + } + } + + if (!fflag) + warn("%s", file); +} + +void +usage() +{ + (void)fprintf(stderr, + "usage: %s [-R [-H | -L | -P]] [-f] %s file ...\n", + myname, ischown ? "[owner][:group]" : "group"); + exit(1); +} |