856489b63

Rob Landley

2006-04-18

SOURCE BUG Duration: 27s

Subject

New applet cksum, from Rob Sullivan.

SOURCE BUG

This commit was genuinely broken at the time (not related to our build system): scripts/config/mkconfigs.c (2005-08-01 - 2006-10-05 arasi) uretilen bbconfigopts.h icine .config satirlarini kacissiz, ham newline'larla gömüyordu - gecerli C degildi, busybox'un kendi bb_mkdep araci bile parse edemiyordu (7d219aab7 ile duzeltildi, mkconfigs shell scripte cevrildi)

→ Bu hatanin tam hikayesini ve duzeltme diffini gor

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

coreutils/Config.in +6 -0 coreutils/Makefile.in +1 -0 coreutils/cksum.c +56 -0 include/applets.h +1 -0 include/usage.h +5 -0

coreutils/Config.in+6 -0

@@ -52,6 +52,12 @@ config CONFIG_CHROOT
	chroot is used to change the root directory and run a command.
	The default command is `/bin/sh'.

+	config CONFIG_CKSUM
+	bool "cksum"
+	default n
+	help
+	cksum is used to calculate the CRC32 checksum of a file.
+
	config CONFIG_CMP
	bool "cmp"
	default n

coreutils/Makefile.in+1 -0

@@ -18,6 +18,7 @@ COREUTILS-$(CONFIG_CHGRP) += chgrp.o
	COREUTILS-$(CONFIG_CHMOD) += chmod.o
	COREUTILS-$(CONFIG_CHOWN) += chown.o
	COREUTILS-$(CONFIG_CHROOT) += chroot.o
+	COREUTILS-$(CONFIG_CKSUM) += cksum.o
	COREUTILS-$(CONFIG_CMP) += cmp.o
	COREUTILS-$(CONFIG_COMM) += comm.o
	COREUTILS-$(CONFIG_CP) += cp.o

coreutils/cksum.c+56 -0

@@ -0,0 +1,56 @@
+	/* vi: set sw=4 ts=4: */
+	/*
+	* cksum - calculate the CRC32 checksum of a file
+	*
+	* Copyright (C) 2006 by Rob Sullivan, with ideas from code by Walter Harms
+	*
+	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */
+
+	#include <stdio.h>
+	#include <unistd.h>
+	#include <fcntl.h>
+	#include <inttypes.h>
+	#include "busybox.h"
+
+	int cksum_main(int argc, char **argv) {
+
+	uint32_t *crc32_table = bb_crc32_filltable(1);
+
+	FILE *fp;
+	uint32_t crc;
+	long length, filesize;
+	int bytes_read;
+	char *cp;
+	RESERVE_CONFIG_BUFFER(buf, BUFSIZ);
+	int inp_stdin = (argc == optind) ? 1 : 0;
+
+	do {
+	fp = bb_wfopen_input((inp_stdin) ? bb_msg_standard_input : *++argv);
+
+	crc = 0;
+	length = 0;
+
+	while ((bytes_read = fread(buf, 1, BUFSIZ, fp)) > 0) {
+	cp = buf;
+	length += bytes_read;
+	while (bytes_read--)
+	crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ (*cp++)) & 0xffL];
+	}
+
+	filesize = length;
+
+	for (; length; length >>= 8)
+	crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ length) & 0xffL];
+	crc ^= 0xffffffffL;
+
+	if (inp_stdin) {
+	printf("%"PRIu32" %li\n", crc, filesize);
+	break;
+	}
+
+	printf("%"PRIu32" %li %s\n", crc, filesize, *argv);
+	fclose(fp);
+	} while (*(argv+1));
+
+	return EXIT_SUCCESS;
+	}

include/applets.h+1 -0

@@ -70,6 +70,7 @@ USE_CHMOD(APPLET(chmod, chmod_main, _BB_DIR_BIN, _BB_SUID_NEVER))
	USE_CHOWN(APPLET(chown, chown_main, _BB_DIR_BIN, _BB_SUID_NEVER))
	USE_CHROOT(APPLET(chroot, chroot_main, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
	USE_CHVT(APPLET(chvt, chvt_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+	USE_CKSUM(APPLET(cksum, cksum_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
	USE_CLEAR(APPLET(clear, clear_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
	USE_CMP(APPLET(cmp, cmp_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
	USE_COMM(APPLET(comm, comm_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))

include/usage.h+5 -0

@@ -224,6 +224,11 @@
	#define chvt_full_usage \
	"Changes the foreground virtual terminal to /dev/ttyN"

+	#define cksum_trivial_usage \
+	"FILES..."
+	#define cksum_full_usage \
+	"Calculates the CRC32 checksums of FILES."
+
	#define clear_trivial_usage \
	""
	#define clear_full_usage \