BSD 4.4 Lite Usr.bin Sources

3 files changed, 351 insertions, 0 deletions

diff --git a/usr.bin/du/Makefile b/usr.bin/du/Makefile
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index 0000000..3b5f135
--- /dev/null
+++ b/usr.bin/du/Makefile
@@ -0,0 +1,5 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	du
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/du/du.1 b/usr.bin/du/du.1
new file mode 100644
index 0000000..4ecce8e
--- /dev/null
+++ b/usr.bin/du/du.1
@@ -0,0 +1,117 @@
+.\" Copyright (c) 1990, 1993
+.\"	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.
+.\"
+.\"	@(#)du.1	8.2 (Berkeley) 4/1/94
+.\"
+.Dd April 1, 1994
+.Dt DU 1
+.Os
+.Sh NAME
+.Nm du
+.Nd display disk usage statistics
+.Sh SYNOPSIS
+.Nm du
+.Op Fl H | Fl L | Fl P
+.Op Fl a | Fl s
+.Op Fl x
+.Op Ar file ...
+.Sh DESCRIPTION
+The
+.Nm du
+utility displays the file system block usage for each file argument
+and for each directory in the file hierarchy rooted in each directory
+argument.
+If no file is specified, the block usage of the hierarchy rooted in
+the current directory is displayed.
+The number of blocks are in the same units as that returned by the
+.Xr stat 2
+system call, i.e. 512-byte blocks.
+Partial numbers of blocks are rounded up.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl H
+Symbolic links on the command line are followed.
+(Symbolic links encountered in the tree traversal are not followed.)
+.It Fl L
+All symbolic links are followed.
+.It Fl P
+No symbolic links are followed.
+.It Fl a
+Display an entry for each file in the file hierarchy.
+.It Fl s
+Display only the grand total for the specified files.
+.It Fl x
+Filesystem mount points are not traversed.
+.El
+.Pp
+.Nm Du
+counts the storage used by symbolic links and not the files they
+reference unless the
+.Fl H
+or 
+.Fl L 
+option is specified.
+If either the
+.Fl H
+or
+.Fl L
+options are specified, storage used by any symbolic links which are
+followed is not counted or displayed.
+The
+.Fl H ,
+.Fl L
+and
+.Fl P
+options override each other and the command's actions are determined
+by the last one specified.
+.Pp
+Files having multiple hard links are counted (and displayed) a single
+time per
+.Nm du
+execution.
+.Sh ENVIRONMENTAL VARIABLES
+.Bl -tag -width BLOCKSIZE
+.It Ev BLOCKSIZE
+If the environmental variable
+.Ev BLOCKSIZE
+is set, the block counts will be displayed in units of that size block.
+.El
+.Sh SEE ALSO
+.Xr df 1 ,
+.Xr fts 3 ,
+.Xr symlink 7 ,
+.Xr quot 8
+.Sh HISTORY
+A
+.Nm du
+command appeared in
+.At v6 .
diff --git a/usr.bin/du/du.c b/usr.bin/du/du.c
new file mode 100644
index 0000000..48869de
--- /dev/null
+++ b/usr.bin/du/du.c
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Newcomb.
+ *
+ * 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[] = "@(#)du.c	8.4 (Berkeley) 4/1/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int	 linkchk __P((FTSENT *));
+void	 usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	FTS *fts;
+	FTSENT *p;
+	long blocksize;
+	int ftsoptions, listdirs, listfiles;
+	int Hflag, Lflag, Pflag, aflag, ch, notused, rval, sflag;
+	char **save;
+
+	save = argv;
+	Hflag = Lflag = Pflag = aflag = sflag = 0;
+	ftsoptions = FTS_PHYSICAL;
+	while ((ch = getopt(argc, argv, "HLPasx")) != 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 'a':
+			aflag = 1;
+			break;
+		case 's':
+			sflag = 1;
+			break;
+		case 'x':
+			ftsoptions |= FTS_XDEV;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	/*
+	 * XXX
+	 * Because of the way that fts(3) works, logical walks will not count
+	 * the blocks actually used by symbolic links.  We rationalize this by
+	 * noting that users computing logical sizes are likely to do logical
+	 * copies, so not counting the links is correct.  The real reason is
+	 * that we'd have to re-implement the kernel's symbolic link traversing
+	 * algorithm to get this right.  If, for example, you have relative
+	 * symbolic links referencing other relative symbolic links, it gets
+	 * very nasty, very fast.  The bottom line is that it's documented in
+	 * the man page, so it's a feature.
+	 */
+	if (Hflag)
+		ftsoptions |= FTS_COMFOLLOW;
+	if (Lflag) {
+		ftsoptions &= ~FTS_PHYSICAL;
+		ftsoptions |= FTS_LOGICAL;
+	}
+
+	if (aflag) {
+		if (sflag)
+			usage();
+		listdirs = listfiles = 1;
+	} else if (sflag)
+		listdirs = listfiles = 0;
+	else {
+		listfiles = 0;
+		listdirs = 1;
+	}
+
+	if (!*argv) {
+		argv = save;
+		argv[0] = ".";
+		argv[1] = NULL;
+	}
+
+	(void)getbsize(&notused, &blocksize);
+	blocksize /= 512;
+
+	if ((fts = fts_open(argv, ftsoptions, NULL)) == NULL)
+		err(1, NULL);
+
+	for (rval = 0; (p = fts_read(fts)) != NULL;)
+		switch (p->fts_info) {
+		case FTS_D:			/* Ignore. */
+			break;
+		case FTS_DP:
+			p->fts_parent->fts_number += 
+			    p->fts_number += p->fts_statp->st_blocks;
+			/*
+			 * If listing each directory, or not listing files
+			 * or directories and this is post-order of the
+			 * root of a traversal, display the total.
+			 */
+			if (listdirs || !listfiles && !p->fts_level)
+				(void)printf("%ld\t%s\n",
+				    howmany(p->fts_number, blocksize),
+				    p->fts_path);
+			break;
+		case FTS_DC:			/* Ignore. */
+			break;
+		case FTS_DNR:			/* Warn, continue. */
+		case FTS_ERR:
+		case FTS_NS:
+			warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
+			rval = 1;
+			break;
+		default:
+			if (p->fts_statp->st_nlink > 1 && linkchk(p))
+				break;
+			/*
+			 * If listing each file, or a non-directory file was
+			 * the root of a traversal, display the total.
+			 */
+			if (listfiles || !p->fts_level)
+				(void)printf("%qd\t%s\n",
+				    howmany(p->fts_statp->st_blocks, blocksize),
+				    p->fts_path);
+			p->fts_parent->fts_number += p->fts_statp->st_blocks;
+		}
+	if (errno)
+		err(1, "fts_read");
+	exit(0);
+}
+
+typedef struct _ID {
+	dev_t	dev;
+	ino_t	inode;
+} ID;
+
+int
+linkchk(p)
+	FTSENT *p;
+{
+	static ID *files;
+	static int maxfiles, nfiles;
+	ID *fp, *start;
+	ino_t ino;
+	dev_t dev;
+
+	ino = p->fts_statp->st_ino;
+	dev = p->fts_statp->st_dev;
+	if ((start = files) != NULL)
+		for (fp = start + nfiles - 1; fp >= start; --fp)
+			if (ino == fp->inode && dev == fp->dev)
+				return (1);
+
+	if (nfiles == maxfiles && (files = realloc((char *)files,
+	    (u_int)(sizeof(ID) * (maxfiles += 128)))) == NULL)
+		err(1, "");
+	files[nfiles].inode = ino;
+	files[nfiles].dev = dev;
+	++nfiles;
+	return (0);
+}
+
+void
+usage()
+{
+
+	(void)fprintf(stderr,
+		"usage: du [-H | -L | -P] [-a | -s] [-x] [file ...]\n");
+	exit(1);
+}