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authorRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
committerRodney W. Grimes <rgrimes@FreeBSD.org>1994-05-26 06:18:55 +0000
commit4b88c807ea9c629dc5691abc7e3cac9ea0d776dd (patch)
treea0ed2782ab2ff5ad5db9841d4dc4cd101011351e /bin/chmod
parent02fab103c2c95a70fba081eca1f9c05e6665b872 (diff)
downloadsrc-4b88c807ea9c629dc5691abc7e3cac9ea0d776dd.tar.gz
src-4b88c807ea9c629dc5691abc7e3cac9ea0d776dd.zip
BSD 4.4 Lite bin Sources
Notes
Notes: svn path=/head/; revision=1556
Diffstat (limited to 'bin/chmod')
-rw-r--r--bin/chmod/Makefile5
-rw-r--r--bin/chmod/chmod.1294
-rw-r--r--bin/chmod/chmod.c201
3 files changed, 500 insertions, 0 deletions
diff --git a/bin/chmod/Makefile b/bin/chmod/Makefile
new file mode 100644
index 000000000000..f28bcfeda971
--- /dev/null
+++ b/bin/chmod/Makefile
@@ -0,0 +1,5 @@
+# @(#)Makefile 8.1 (Berkeley) 5/31/93
+
+PROG= chmod
+
+.include <bsd.prog.mk>
diff --git a/bin/chmod/chmod.1 b/bin/chmod/chmod.1
new file mode 100644
index 000000000000..ce92124b05c3
--- /dev/null
+++ b/bin/chmod/chmod.1
@@ -0,0 +1,294 @@
+.\" Copyright (c) 1989, 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.
+.\"
+.\" @(#)chmod.1 8.4 (Berkeley) 3/31/94
+.\"
+.Dd March 31, 1994
+.Dt CHMOD 1
+.Os
+.Sh NAME
+.Nm chmod
+.Nd change file modes
+.Sh SYNOPSIS
+.Nm chmod
+.Oo
+.Fl R
+.Op Fl H | Fl L | Fl P
+.Oc
+.Ar mode
+.Ar file ...
+.Sh DESCRIPTION
+The
+.Nm chmod
+utility modifies the file mode bits of the listed files
+as specified by the
+.Ar mode
+operand.
+.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 modes of the file hierarchies rooted in the files
+instead of just the files themselves.
+.El
+.Pp
+Symbolic links do not have modes, so unless the
+.Fl H
+or
+.Fl L
+option is set,
+.Nm chmod
+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
+Only the owner of a file or the super-user is permitted to change
+the mode of a file.
+.Pp
+The
+.Nm chmod
+utility exits 0 on success, and >0 if an error occurs.
+.Sh MODES
+Modes may be absolute or symbolic.
+An absolute mode is an octal number constructed by
+.Ar or-ing
+the following values:
+.Pp
+.Bl -tag -width 6n -compact -offset indent
+.It Li 4000
+set-user-ID-on-execution
+.It Li 2000
+set-group-ID-on-execution
+.It Li 1000
+sticky bit, see chmod(2)
+.It Li 0400
+read by owner
+.It Li 0200
+write by owner
+.It Li 0100
+execute (or search for directories) by owner
+.It Li 0070
+read, write, execute/search by group
+.It Li 0007
+read, write, execute/search by others
+.El
+.Pp
+The read, write, and execute/search values for group and others
+are encoded as described for owner.
+.Pp
+The symbolic mode is described by the following grammar:
+.Bd -literal -offset indent
+mode ::= clause [, clause ...]
+clause ::= [who ...] [action ...] last_action
+action ::= op [perm ...]
+last_action ::= op [perm ...]
+who ::= a | u | g | o
+op ::= + | \- | =
+perm ::= r | s | t | w | x | X | u | g | o
+.Ed
+.Pp
+The
+.Ar who
+symbols ``u'', ``g'', and ``o'' specify the user, group, and other parts
+of the mode bits, respectively.
+The
+.Ar who
+symbol ``a'' is equivalent to ``ugo''.
+.Pp
+.ne 1i
+The
+.Ar perm
+symbols represent the portions of the mode bits as follows:
+.Pp
+.Bl -tag -width Ds -compact -offset indent
+.It r
+The read bits.
+.It s
+The set-user-ID-on-execution and set-group-ID-on-execution bits.
+.It t
+The sticky bit.
+.It w
+The write bits.
+.It x
+The execute/search bits.
+.It X
+The execute/search bits if the file is a directory or any of the
+execute/search bits are set in the original (unmodified) mode.
+Operations with the
+.Ar perm
+symbol ``X'' are only meaningful in conjunction with the
+.Ar op
+symbol ``+'', and are ignored in all other cases.
+.It u
+The user permission bits in the mode of the original file.
+.It g
+The group permission bits in the mode of the original file.
+.It o
+The other permission bits in the mode of the original file.
+.El
+.Pp
+The
+.Ar op
+symbols represent the operation performed, as follows:
+.Bl -tag -width 4n
+.It +
+If no value is supplied for
+.Ar perm ,
+the ``+'' operation has no effect.
+If no value is supplied for
+.Ar who ,
+each permission bit specified in
+.Ar perm ,
+for which the corresponding bit in the file mode creation mask
+is clear, is set.
+Otherwise, the mode bits represented by the specified
+.Ar who
+and
+.Ar perm
+values are set.
+.It \&\-
+If no value is supplied for
+.Ar perm ,
+the ``\-'' operation has no effect.
+If no value is supplied for
+.Ar who ,
+each permission bit specified in
+.Ar perm ,
+for which the corresponding bit in the file mode creation mask
+is clear, is cleared.
+Otherwise, the mode bits represented by the specified
+.Ar who
+and
+.Ar perm
+values are cleared.
+.It =
+The mode bits specified by the
+.Ar who
+value are cleared, or, if no who value is specified, the owner, group
+and other mode bits are cleared.
+Then, if no value is supplied for
+.Ar who ,
+each permission bit specified in
+.Ar perm ,
+for which the corresponding bit in the file mode creation mask
+is clear, is set.
+Otherwise, the mode bits represented by the specified
+.Ar who
+and
+.Ar perm
+values are set.
+.El
+.Pp
+Each
+.Ar clause
+specifies one or more operations to be performed on the mode
+bits, and each operation is applied to the mode bits in the
+order specified.
+.Pp
+Operations upon the other permissions only (specified by the symbol
+``o'' by itself), in combination with the
+.Ar perm
+symbols ``s'' or ``t'', are ignored.
+.Sh EXAMPLES
+.Bl -tag -width "u=rwx,go=u-w" -compact
+.It Li 644
+make a file readable by anyone and writable by the owner only.
+.Pp
+.It Li go-w
+deny write permission to group and others.
+.Pp
+.It Li =rw,+X
+set the read and write permissions to the usual defaults, but
+retain any execute permissions that are currently set.
+.Pp
+.It Li +X
+make a directory or file searchable/executable by everyone if it is
+already searchable/executable by anyone.
+.Pp
+.It Li 755
+.It Li u=rwx,go=rx
+.It Li u=rwx,go=u-w
+make a file readable/executable by everyone and writable by the owner only.
+.Pp
+.It Li go=
+clear all mode bits for group and others.
+.Pp
+.It Li g=u-w
+set the group bits equal to the user bits, but clear the group write bit.
+.El
+.Sh BUGS
+There's no
+.Ar perm
+option for the naughty bits.
+.Sh SEE ALSO
+.Xr install 1 ,
+.Xr chmod 2 ,
+.Xr stat 2 ,
+.Xr umask 2 ,
+.Xr fts 3 ,
+.Xr setmode 3 ,
+.Xr symlink 7 ,
+.Xr chown 8
+.Sh STANDARDS
+The
+.Nm chmod
+utility is expected to be POSIX 1003.2
+compatible with the exception of the
+.Ar perm
+symbols
+.Dq t
+and
+.Dq X
+which are not included in that standard.
diff --git a/bin/chmod/chmod.c b/bin/chmod/chmod.c
new file mode 100644
index 000000000000..f6251a35c222
--- /dev/null
+++ b/bin/chmod/chmod.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 1989, 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) 1989, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+void usage __P((void));
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ FTS *ftsp;
+ FTSENT *p;
+ mode_t *set;
+ long val;
+ int oct, omode;
+ int Hflag, Lflag, Pflag, Rflag, ch, fflag, fts_options, hflag, rval;
+ char *ep, *mode;
+
+ Hflag = Lflag = Pflag = Rflag = fflag = hflag = 0;
+ while ((ch = getopt(argc, argv, "HLPRXfgorstuwx")) != 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': /* XXX: undocumented. */
+ fflag = 1;
+ break;
+ case 'h':
+ /*
+ * In System V (and probably POSIX.2) the -h option
+ * causes chmod to change the mode of the symbolic
+ * link. 4.4BSD's symbolic links don't have modes,
+ * so it's an undocumented noop. Do syntax checking,
+ * though.
+ */
+ hflag = 1;
+ break;
+ /*
+ * XXX
+ * "-[rwx]" are valid mode commands. If they are the entire
+ * argument, getopt has moved past them, so decrement optind.
+ * Regardless, we're done argument processing.
+ */
+ case 'g': case 'o': case 'r': case 's':
+ case 't': case 'u': case 'w': case 'X': case 'x':
+ if (argv[optind - 1][0] == '-' &&
+ argv[optind - 1][1] == ch &&
+ argv[optind - 1][2] == '\0')
+ --optind;
+ goto done;
+ case '?':
+ default:
+ usage();
+ }
+done: 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;
+ }
+ }
+
+ mode = *argv;
+ if (*mode >= '0' && *mode <= '7') {
+ errno = 0;
+ val = strtol(mode, &ep, 8);
+ if (val > INT_MAX || val < 0)
+ errno = ERANGE;
+ if (errno)
+ err(1, "invalid file mode: %s", mode);
+ if (*ep)
+ errx(1, "invalid file mode: %s", mode);
+ omode = val;
+ oct = 1;
+ } else {
+ if ((set = setmode(mode)) == NULL)
+ errx(1, "invalid file mode: %s", mode);
+ oct = 0;
+ }
+
+ 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, chmod, 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 (chmod(p->fts_accpath, oct ? omode :
+ getmode(set, p->fts_statp->st_mode)) && !fflag) {
+ warn(p->fts_path);
+ rval = 1;
+ }
+ }
+ if (errno)
+ err(1, "fts_read");
+ exit(rval);
+}
+
+void
+usage()
+{
+ (void)fprintf(stderr,
+ "usage: chmod [-R [-H | -L | -P]] mode file ...\n");
+ exit(1);
+}