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authorDenys Vlasenko2010-10-27 15:26:45 +0200
committerDenys Vlasenko2010-10-27 15:26:45 +0200
commit9ce642f9746dfc29d119d0680b769677e3ea6da6 (patch)
treef8d2bcd08c691979058b610b32573a742a3e3024 /coreutils
parentdd88ba88f5082b1785539b1fb87af7320515b8c9 (diff)
downloadbusybox-9ce642f9746dfc29d119d0680b769677e3ea6da6.zip
busybox-9ce642f9746dfc29d119d0680b769677e3ea6da6.tar.gz
libbb: introduce and use common crc32 routine
function old new delta crc32_block_endian1 - 37 +37 crc32_block_endian0 - 34 +34 global_crc32_table - 8 +8 file_read 82 87 +5 gzip_main 211 214 +3 xz_crc32 40 35 -5 crc32_table 8 - -8 calculate_gunzip_crc 54 34 -20 lzo_crc32 54 25 -29 cksum_main 298 211 -87 ------------------------------------------------------------------------------ (add/remove: 3/1 grow/shrink: 2/4 up/down: 87/-149) Total: -62 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/cksum.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/coreutils/cksum.c b/coreutils/cksum.c
index 7bf383e..7a37e6a 100644
--- a/coreutils/cksum.c
+++ b/coreutils/cksum.c
@@ -18,7 +18,6 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
off_t length, filesize;
int bytes_read;
int exit_code = EXIT_SUCCESS;
- uint8_t *cp;
#if ENABLE_DESKTOP
getopt32(argv, ""); /* coreutils 6.9 compat */
@@ -39,11 +38,7 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
#define read_buf bb_common_bufsiz1
while ((bytes_read = safe_read(fd, read_buf, sizeof(read_buf))) > 0) {
- cp = (uint8_t *) read_buf;
- length += bytes_read;
- do {
- crc = (crc << 8) ^ crc32_table[(crc >> 24) ^ *cp++];
- } while (--bytes_read);
+ crc = crc32_block_endian1(crc, read_buf, bytes_read, crc32_table);
}
close(fd);