Remove dependency of release.sh on bc, du option to give overhead totals

commands/du/Makefile

@@ -1,4 +1,5 @@
 PROG=	du
+CPPFLAGS+= -I${MINIXSRCDIR}/servers
 MAN=
 
 .include <minix.prog.mk>

commands/du/du.c

@@ -46,6 +46,8 @@
 #include <minix/config.h>
 #include <minix/const.h>
 
+#include "mfs/const.h"
+
 extern char *optarg;
 extern int optind;
 
@@ -71,10 +73,11 @@ _PROTOTYPE(int done, (dev_t dev, ino_t inum, nlink_t nlink));
 _PROTOTYPE(long dodir, (char *d, int thislev, dev_t dev));
 
 char *prog;			/* program name */
-char *optstr = "asxdl:";	/* options */
+char *optstr = "aFsxdl:";	/* options */
 int silent = 0;			/* silent mode */
 int all = 0;			/* all directory entries mode */
 int crosschk = 0;		/* do not cross device boundaries mode */
+int fsoverhead = 0;		/* include FS overhead */
 char *startdir = ".";		/* starting from here */
 int levels = 20000;		/* # of directory levels to print */
 ALREADY *already[NR_ALREADY];
@@ -107,6 +110,8 @@ int done(dev_t dev, ino_t inum, nlink_t nlink)
 {
   register ALREADY **pap, *ap;
 
+  if (fsoverhead) return 0;
+
   pap = &already[(unsigned) inum % NR_ALREADY];
   while ((ap = *pap) != NULL) {
 	if (ap->al_inum == inum && ap->al_dev == dev) {
@@ -164,7 +169,8 @@ long dodir(char *d, int thislev, dev_t dev)
 {
   int maybe_print;
   struct stat s;
-  long total_kb;
+  long indir_blocks, indir2_blocks, indir_per_block;
+  long total_blocks, total_kb;
   char dent[LINELEN];
   DIR *dp;
   struct dirent *entry;
@@ -183,7 +189,16 @@ long dodir(char *d, int thislev, dev_t dev)
 			prog, d, block_size);
     	return 0L;
   }
-  total_kb = ((s.st_size + (block_size - 1)) / block_size) * block_size / 1024;
+  total_blocks = (s.st_size + (block_size - 1)) / block_size;
+  if (fsoverhead) {
+	/* file system overhead: indirect blocks */
+	indir_per_block = block_size / sizeof(zone_t);
+	indir_blocks = (total_blocks - V2_NR_DZONES) / indir_per_block;
+	total_blocks += indir_blocks;
+	indir2_blocks = (indir_blocks - 1) / (indir_per_block * indir_per_block);
+	total_blocks += indir2_blocks;
+  }
+  total_kb = total_blocks * block_size / 1024;
   switch (s.st_mode & S_IFMT) {
     case S_IFDIR:
 	/* Directories should not be linked except to "." and "..", so this
@@ -228,10 +243,11 @@ char **argv;
 	    case 's':	silent = 1;	break;
 	    case 'x':
 	    case 'd':	crosschk = 1;	break;
+	    case 'F':	fsoverhead = 1;	break;
 	    case 'l':	levels = atoi(optarg);	break;
 	    default:
 		fprintf(stderr,
-			"Usage: %s [-asx] [-l levels] [startdir]\n", prog);
+			"Usage: %s [-asxF] [-l levels] [startdir]\n", prog);
 		exit(1);
 	}
   do {

man/man1/du.1

@@ -16,6 +16,7 @@ du \- print disk usage
 ..
 .SH OPTIONS
 .FL "\-a" "Give usage for all files"
+.FL "\-F" "Include filesystem overhead for indirect blocks"
 .FL "\-l" "List up to \fIn\fR levels of subdirectories"
 .FL "\-d" "Do not cross file system boundaries"
 .FL "\-s" "Summary only"

tools/release.sh

@@ -122,18 +122,11 @@ fitfs()
 	inodes=`find $path | egrep -v ^$path/usr | wc -l`
 	inodes="`expr $inodes + $extra_inodes`"
 
-	# Determine number of data zones using bc formula to transform file size in zone count
-	#  s - file size
-	#  d - number of direct blocks
-	#  i - number of indirect blocks
-	#  j - number of double indirect blocks
-	dir=7
-	indir="`expr $BS / 4`"
-	indir2="`expr $indir \* $indir`"
-	formula="s=\\0;d=(s+$BS-1)/$BS;i=(d-$dir+$indir-1)/$indir;j=(i-1+$indir2-1)/$indir2;d+i+j"
-	zones=`( find $path | egrep -v ^$path/usr | xargs lstat -size | egrep '^[0-9]+$' | sed -r "s|.+|$formula|" | bc | tr '
-' +; echo 0 ) | bc`
-	zones="`expr $zones + $extra_zones`"
+	# Determine number of data zones
+	zonekbs=`du -Fs $path | cut -d'	' -f1`
+	zonekbsignore=0
+	[ ! -d $path/usr ] || zonekbsignore=`du -Fs $path/usr | cut -d"	" -f1`
+	zones="`expr \( $zonekbs - $zonekbsignore \) / \( $BS / 1024 \) + $extra_zones`"
 
 	# Determine file system size
 	BSBITS="`expr $BS \* 8`"