Hi,
latest gnulib have support for sendfile and AF_ALG, the kernel crypto
framework, if compiled with --with-linux-crypto.
This allows to have very fast hashing algorythms but without the
libcrypto dependency,
coreutils$ ./configure --with-linux-crypto
[...]
checking whether linux/if_alg.h has struct sockaddr_alg.... yes
[...]
coreutils$ ldd src/sha1sum /usr/bin/sha1sum
src/sha1sum:
linux-vdso.so.1 (0x00007fff1d56b000)
libc.so.6 => /lib64/libc.so.6 (0x00007f156b70c000)
/lib64/ld-linux-x86-64.so.2 (0x00007f156b902000)
/usr/bin/sha1sum:
linux-vdso.so.1 (0x00007ffebef02000)
libcrypto.so.1.1 => /lib64/libcrypto.so.1.1 (0x00007fe977d09000)
libc.so.6 => /lib64/libc.so.6 (0x00007fe977b43000)
libz.so.1 => /lib64/libz.so.1 (0x00007fe977b29000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fe977b23000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fe977b01000)
/lib64/ld-linux-x86-64.so.2 (0x00007fe978020000)
coreutils$ time /usr/bin/sha1sum zero
2a492f15396a6768bcbca016993f4b4c8b0b5307 zero
real 0m1,254s
user 0m1,147s
sys 0m0,108s
coreutils$ truncate -s1g zero
coreutils$ time src/sha1sum zero
2a492f15396a6768bcbca016993f4b4c8b0b5307 zero
real 0m1,234s
user 0m0,005s
sys 0m1,230s
Think about enabling it.
Regards,
--
Matteo Croce
per aspera ad upstream
