X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fdu.c;h=03e31a0e4109d7c7a70c652a850a1c2981e9a366;hb=a107ef2a6ace98c51473dc3153564a44b260bc6f;hp=34a549f029393d7759aa8eb7ed3e38fc699cd574;hpb=16714245f9a16ce3725aab079aea7b0d28c6b32f;p=oweals%2Fbusybox.git

diff --git a/coreutils/du.c b/coreutils/du.c
index 34a549f02..03e31a0e4 100644
--- a/coreutils/du.c
+++ b/coreutils/du.c
@@ -8,10 +8,6 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
-
-/* BB_AUDIT SUSv3 compliant (unless default blocksize set to 1k) */
-/* http://www.opengroup.org/onlinepubs/007904975/utilities/du.html */
-
 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  *
  * Mostly rewritten for SUSv3 compliance and to fix bugs/defects.
@@ -22,15 +18,31 @@
  * 3) Added error checking of output.
  * 4) Fixed busybox bug #1284 involving long overflow with human_readable.
  */
+//config:config DU
+//config:	bool "du (default blocksize of 512 bytes)"
+//config:	default y
+//config:	help
+//config:	  du is used to report the amount of disk space used
+//config:	  for specified files.
+//config:
+//config:config FEATURE_DU_DEFAULT_BLOCKSIZE_1K
+//config:	bool "Use a default blocksize of 1024 bytes (1K)"
+//config:	default y
+//config:	depends on DU
+//config:	help
+//config:	  Use a blocksize of (1K) instead of the default 512b.
+
+//applet:IF_DU(APPLET(du, BB_DIR_USR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_DU) += du.o
+
+/* BB_AUDIT SUSv3 compliant (unless default blocksize set to 1k) */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/du.html */
 
 //usage:#define du_trivial_usage
 //usage:       "[-aHLdclsx" IF_FEATURE_HUMAN_READABLE("hm") "k] [FILE]..."
 //usage:#define du_full_usage "\n\n"
-//usage:       "Summarize disk space used for each FILE and/or directory.\n"
-//usage:       "Disk space is printed in units of "
-//usage:	IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K("1024")
-//usage:	IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K("512")
-//usage:       " bytes.\n"
+//usage:       "Summarize disk space used for each FILE and/or directory\n"
 //usage:     "\n	-a	Show file sizes too"
 //usage:     "\n	-L	Follow all symlinks"
 //usage:     "\n	-H	Follow symlinks on command line"
@@ -40,11 +52,13 @@
 //usage:     "\n	-s	Display only a total for each argument"
 //usage:     "\n	-x	Skip directories on different filesystems"
 //usage:	IF_FEATURE_HUMAN_READABLE(
-//usage:     "\n	-h	Sizes in human readable format (e.g., 1K 243M 2G )"
+//usage:     "\n	-h	Sizes in human readable format (e.g., 1K 243M 2G)"
 //usage:     "\n	-m	Sizes in megabytes"
 //usage:	)
-//usage:     "\n	-k	Sizes in kilobytes"
-//usage:			IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(" (default)")
+//usage:     "\n	-k	Sizes in kilobytes" IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(" (default)")
+//usage:	IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(
+//usage:     "\n		Default unit is 512 bytes"
+//usage:	)
 //usage:
 //usage:#define du_example_usage
 //usage:       "$ du\n"
@@ -60,6 +74,7 @@
 //usage:       "2417    .\n"
 
 #include "libbb.h"
+#include "common_bufsiz.h"
 
 enum {
 	OPT_a_files_too    = (1 << 0),
@@ -77,7 +92,7 @@ enum {
 
 struct globals {
 #if ENABLE_FEATURE_HUMAN_READABLE
-	unsigned long disp_hr;
+	unsigned long disp_unit;
 #else
 	unsigned disp_k;
 #endif
@@ -87,33 +102,46 @@ struct globals {
 	int du_depth;
 	dev_t dir_dev;
 } FIX_ALIASING;
-#define G (*(struct globals*)&bb_common_bufsiz1)
-#define INIT_G() do { } while (0)
+#define G (*(struct globals*)bb_common_bufsiz1)
+#define INIT_G() do { setup_common_bufsiz(); } while (0)
 
 
-static void print(unsigned long size, const char *filename)
+static void print(unsigned long long size, const char *filename)
 {
 	/* TODO - May not want to defer error checking here. */
 #if ENABLE_FEATURE_HUMAN_READABLE
+# if ENABLE_DESKTOP
+	/* ~30 bytes of code for extra comtat:
+	 * coreutils' du rounds sizes up:
+	 * for example,  1025k file is shown as "2" by du -m.
+	 * We round to nearest if human-readable [too hard to fix],
+	 * else (fixed scale such as -m), we round up. To that end,
+	 * add yet another half of the unit before displaying:
+	 */
+	if (G.disp_unit)
+		size += (G.disp_unit-1) / (unsigned)(512 * 2);
+# endif
 	printf("%s\t%s\n",
-			/* size x 512 / G.disp_hr, show one fractional,
-			 * use suffixes if G.disp_hr == 0 */
-			make_human_readable_str(size, 512, G.disp_hr),
+			/* size x 512 / G.disp_unit.
+			 * If G.disp_unit == 0, show one fractional
+			 * and use suffixes
+			 */
+			make_human_readable_str(size, 512, G.disp_unit),
 			filename);
 #else
 	if (G.disp_k) {
 		size++;
 		size >>= 1;
 	}
-	printf("%lu\t%s\n", size, filename);
+	printf("%llu\t%s\n", size, filename);
 #endif
 }
 
 /* tiny recursive du */
-static unsigned long du(const char *filename)
+static unsigned long long du(const char *filename)
 {
 	struct stat statbuf;
-	unsigned long sum;
+	unsigned long long sum;
 
 	if (lstat(filename, &statbuf) != 0) {
 		bb_simple_perror_msg(filename);
@@ -190,17 +218,17 @@ static unsigned long du(const char *filename)
 int du_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int du_main(int argc UNUSED_PARAM, char **argv)
 {
-	unsigned long total;
+	unsigned long long total;
 	int slink_depth_save;
 	unsigned opt;
 
 	INIT_G();
 
 #if ENABLE_FEATURE_HUMAN_READABLE
-	IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_hr = 1024;)
-	IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_hr = 512;)
+	IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_unit = 1024;)
+	IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_unit = 512;)
 	if (getenv("POSIXLY_CORRECT"))  /* TODO - a new libbb function? */
-		G.disp_hr = 512;
+		G.disp_unit = 512;
 #else
 	IF_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 1;)
 	/* IF_NOT_FEATURE_DU_DEFAULT_BLOCKSIZE_1K(G.disp_k = 0;) - G is pre-zeroed */
@@ -214,21 +242,21 @@ int du_main(int argc UNUSED_PARAM, char **argv)
 	 * ignore -a.  This is consistent with -s being equivalent to -d 0.
 	 */
 #if ENABLE_FEATURE_HUMAN_READABLE
-	opt_complementary = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s:d+";
-	opt = getopt32(argv, "aHkLsx" "d:" "lc" "hm", &G.max_print_depth);
+	opt_complementary = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s";
+	opt = getopt32(argv, "aHkLsx" "d:+" "lc" "hm", &G.max_print_depth);
 	argv += optind;
 	if (opt & OPT_h_for_humans) {
-		G.disp_hr = 0;
+		G.disp_unit = 0;
 	}
 	if (opt & OPT_m_mbytes) {
-		G.disp_hr = 1024*1024;
+		G.disp_unit = 1024*1024;
 	}
 	if (opt & OPT_k_kbytes) {
-		G.disp_hr = 1024;
+		G.disp_unit = 1024;
 	}
 #else
-	opt_complementary = "H-L:L-H:s-d:d-s:d+";
-	opt = getopt32(argv, "aHkLsx" "d:" "lc", &G.max_print_depth);
+	opt_complementary = "H-L:L-H:s-d:d-s";
+	opt = getopt32(argv, "aHkLsx" "d:+" "lc", &G.max_print_depth);
 	argv += optind;
 #if !ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
 	if (opt & OPT_k_kbytes) {