cksum: respect CONFIG_LFS=y. Adds 36 bytes in this case.

diff --git a/coreutils/cksum.c b/coreutils/cksum.c
index 598718486adc10791b50da83f5fba957ccb7b5b5..546532c3c21d4618ed11ee72a1abbece89c3dfd4 100644 (file)
--- a/coreutils/cksum.c
+++ b/coreutils/cksum.c
@@ -13,7 +13,7 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
 {
        uint32_t *crc32_table = crc32_filltable(NULL, 1);
        uint32_t crc;
-       long length, filesize;
+       off_t length, filesize;
        int bytes_read;
        uint8_t *cp;
 
@@ -44,11 +44,19 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
 
                filesize = length;
 
-               for (; length; length >>= 8)
-                       crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ length) & 0xff];
-               crc ^= 0xffffffffL;
+               while (length) {
+                       crc = (crc << 8) ^ crc32_table[(uint8_t)(crc >> 24) ^ (uint8_t)length];
+                       /* must ensure that shift is unsigned! */
+                       if (sizeof(length) <= sizeof(unsigned))
+                               length = (unsigned)length >> 8;
+                       else if (sizeof(length) <= sizeof(unsigned long))
+                               length = (unsigned long)length >> 8;
+                       else
+                               length = (unsigned long long)length >> 8;
+               }
+               crc = ~crc;
 
-               printf((*argv ? "%" PRIu32 " %li %s\n" : "%" PRIu32 " %li\n"),
+               printf((*argv ? "%"PRIu32" %"OFF_FMT"i %s\n" : "%"PRIu32" %"OFF_FMT"i\n"),
                                crc, filesize, *argv);
        } while (*argv && *++argv);