Add the du command to toolbox
The code is from NetBSD, with the -n and -h options removed to make
porting easy. Also, removed support for the BLOCKSIZE environment
variable for the same reason.
Change-Id: Ib927ff3527e02802785fdd7f75bab1f05222918e
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index be95e7c..c1f165c 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -56,6 +56,7 @@
ionice \
touch \
lsof \
+ du \
md5
ifeq ($(HAVE_SELINUX),true)
diff --git a/toolbox/du.c b/toolbox/du.c
new file mode 100644
index 0000000..06374a4
--- /dev/null
+++ b/toolbox/du.c
@@ -0,0 +1,322 @@
+/* $NetBSD: du.c,v 1.33 2008/07/30 22:03:40 dsl Exp $ */
+
+/*
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\
+ The Regents of the University of California. All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)du.c 8.5 (Berkeley) 5/4/95";
+#else
+__RCSID("$NetBSD: du.c,v 1.33 2008/07/30 22:03:40 dsl Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fts.h>
+#include <util.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+int linkchk(dev_t, ino_t);
+void prstat(const char *, int64_t);
+void usage(void);
+
+long blocksize;
+
+#define howmany(x, y) (((x)+((y)-1))/(y))
+
+int
+du_main(int argc, char *argv[])
+{
+ FTS *fts;
+ FTSENT *p;
+ int64_t totalblocks;
+ int ftsoptions, listfiles;
+ int depth;
+ int Hflag, Lflag, aflag, ch, cflag, dflag, gkmflag, nflag, rval, sflag;
+ const char *noargv[2];
+
+ Hflag = Lflag = aflag = cflag = dflag = gkmflag = sflag = 0;
+ totalblocks = 0;
+ ftsoptions = FTS_PHYSICAL;
+ depth = INT_MAX;
+ while ((ch = getopt(argc, argv, "HLPacd:ghkmnrsx")) != -1)
+ switch (ch) {
+ case 'H':
+ Hflag = 1;
+ Lflag = 0;
+ break;
+ case 'L':
+ Lflag = 1;
+ Hflag = 0;
+ break;
+ case 'P':
+ Hflag = Lflag = 0;
+ break;
+ case 'a':
+ aflag = 1;
+ break;
+ case 'c':
+ cflag = 1;
+ break;
+ case 'd':
+ dflag = 1;
+ depth = atoi(optarg);
+ if (depth < 0 || depth > SHRT_MAX) {
+ warnx("invalid argument to option d: %s",
+ optarg);
+ usage();
+ }
+ break;
+ case 'g':
+ blocksize = 1024 * 1024 * 1024;
+ gkmflag = 1;
+ break;
+ case 'k':
+ blocksize = 1024;
+ gkmflag = 1;
+ break;
+ case 'm':
+ blocksize = 1024 * 1024;
+ gkmflag = 1;
+ break;
+ case 'r':
+ 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;
+ }
+
+ listfiles = 0;
+ if (aflag) {
+ if (sflag || dflag)
+ usage();
+ listfiles = 1;
+ } else if (sflag) {
+ if (dflag)
+ usage();
+ depth = 0;
+ }
+
+ if (!*argv) {
+ noargv[0] = ".";
+ noargv[1] = NULL;
+ argv = __UNCONST(noargv);
+ }
+
+ if (!gkmflag)
+ blocksize = 512;
+ blocksize /= 512;
+
+ if ((fts = fts_open(argv, ftsoptions, NULL)) == NULL)
+ err(1, "fts_open `%s'", *argv);
+
+ 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 (cflag)
+ totalblocks += 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 (p->fts_level <= depth
+ || (!listfiles && !p->fts_level))
+ prstat(p->fts_path, p->fts_number);
+ 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->fts_statp->st_dev, p->fts_statp->st_ino))
+ break;
+ /*
+ * If listing each file, or a non-directory file was
+ * the root of a traversal, display the total.
+ */
+ if (listfiles || !p->fts_level)
+ prstat(p->fts_path, p->fts_statp->st_blocks);
+ p->fts_parent->fts_number += p->fts_statp->st_blocks;
+ if (cflag)
+ totalblocks += p->fts_statp->st_blocks;
+ }
+ }
+ if (errno)
+ err(1, "fts_read");
+ if (cflag)
+ prstat("total", totalblocks);
+ exit(rval);
+}
+
+void
+prstat(const char *fname, int64_t blocks)
+{
+ (void)printf("%lld\t%s\n",
+ (long long)howmany(blocks, (int64_t)blocksize),
+ fname);
+}
+
+int
+linkchk(dev_t dev, ino_t ino)
+{
+ static struct entry {
+ dev_t dev;
+ ino_t ino;
+ } *htable;
+ static int htshift; /* log(allocated size) */
+ static int htmask; /* allocated size - 1 */
+ static int htused; /* 2*number of insertions */
+ static int sawzero; /* Whether zero is in table or not */
+ int h, h2;
+ uint64_t tmp;
+ /* this constant is (1<<64)/((1+sqrt(5))/2)
+ * aka (word size)/(golden ratio)
+ */
+ const uint64_t HTCONST = 11400714819323198485ULL;
+ const int HTBITS = CHAR_BIT * sizeof(tmp);
+
+ /* Never store zero in hashtable */
+ if (dev == 0 && ino == 0) {
+ h = sawzero;
+ sawzero = 1;
+ return h;
+ }
+
+ /* Extend hash table if necessary, keep load under 0.5 */
+ if (htused<<1 >= htmask) {
+ struct entry *ohtable;
+
+ if (!htable)
+ htshift = 10; /* starting hashtable size */
+ else
+ htshift++; /* exponential hashtable growth */
+
+ htmask = (1 << htshift) - 1;
+ htused = 0;
+
+ ohtable = htable;
+ htable = calloc(htmask+1, sizeof(*htable));
+ if (!htable)
+ err(1, "calloc");
+
+ /* populate newly allocated hashtable */
+ if (ohtable) {
+ int i;
+ for (i = 0; i <= htmask>>1; i++)
+ if (ohtable[i].ino || ohtable[i].dev)
+ linkchk(ohtable[i].dev, ohtable[i].ino);
+ free(ohtable);
+ }
+ }
+
+ /* multiplicative hashing */
+ tmp = dev;
+ tmp <<= HTBITS>>1;
+ tmp |= ino;
+ tmp *= HTCONST;
+ h = tmp >> (HTBITS - htshift);
+ h2 = 1 | ( tmp >> (HTBITS - (htshift<<1) - 1)); /* must be odd */
+
+ /* open address hashtable search with double hash probing */
+ while (htable[h].ino || htable[h].dev) {
+ if ((htable[h].ino == ino) && (htable[h].dev == dev))
+ return 1;
+ h = (h + h2) & htmask;
+ }
+
+ /* Insert the current entry into hashtable */
+ htable[h].dev = dev;
+ htable[h].ino = ino;
+ htused++;
+ return 0;
+}
+
+void
+usage(void)
+{
+
+ (void)fprintf(stderr,
+ "usage: du [-H | -L | -P] [-a | -d depth | -s] [-cgkmrx] [file ...]\n");
+ exit(1);
+}