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Diffstat (limited to 'coreutils/cksum.c')
-rw-r--r--coreutils/cksum.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/coreutils/cksum.c b/coreutils/cksum.c
index 5849dda..9a45fd6 100644
--- a/coreutils/cksum.c
+++ b/coreutils/cksum.c
@@ -3,12 +3,13 @@
* 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 "busybox.h"
-int cksum_main(int argc, char **argv) {
+int cksum_main(int argc, char **argv)
+{
uint32_t *crc32_table = crc32_filltable(1);
@@ -17,36 +18,36 @@ int cksum_main(int argc, char **argv) {
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;
+
+ while ((bytes_read = fread(bb_common_bufsiz1, 1, BUFSIZ, fp)) > 0) {
+ cp = bb_common_bufsiz1;
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);
+ bb_printf("%" PRIu32 " %li\n", crc, filesize);
break;
}
-
- printf("%"PRIu32" %li %s\n", crc, filesize, *argv);
+
+ bb_printf("%" PRIu32 " %li %s\n", crc, filesize, *argv);
fclose(fp);
- } while (*(argv+1));
-
+ } while (*(argv + 1));
+
return EXIT_SUCCESS;
}