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| author | Denys Vlasenko <dvlasenk@redhat.com> | 2010-10-27 15:26:45 +0200 |
|---|---|---|
| committer | Denys Vlasenko <dvlasenk@redhat.com> | 2010-10-27 15:26:45 +0200 |
| commit | 9ce642f9746dfc29d119d0680b769677e3ea6da6 (patch) | |
| tree | f8d2bcd08c691979058b610b32573a742a3e3024 /coreutils/cksum.c | |
| parent | dd88ba88f5082b1785539b1fb87af7320515b8c9 (diff) | |
| download | 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/cksum.c')
| -rw-r--r-- | coreutils/cksum.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/coreutils/cksum.c b/coreutils/cksum.c index 7bf383e2d..7a37e6add 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); |