From 2ea379b9f9a1df59327fb2b05b8d9af3bf6615af Mon Sep 17 00:00:00 2001 From: Simon Wilkinson Date: Fri, 2 Oct 2009 18:36:24 +0100 Subject: [PATCH] There can be only one ... MD5 The cache manager has two implementations of md5 - one in afs_md5.c (used by afs_NewCell) and one in afs_util.c - used by Linux's MD5-inode code. Remove the one in afs_util.c in favour of using the common implementation in afs_md5.c Reviewed-on: http://gerrit.openafs.org/572 Tested-by: Derrick Brashear Reviewed-by: Derrick Brashear --- src/afs/afs_util.c | 244 +-------------------------------------------- 1 file changed, 4 insertions(+), 240 deletions(-) diff --git a/src/afs/afs_util.c b/src/afs/afs_util.c index 8becfcf3c..fb42f9e95 100644 --- a/src/afs/afs_util.c +++ b/src/afs/afs_util.c @@ -36,6 +36,10 @@ #include "afsincludes.h" /* Afs-based standard headers */ #include "afs/afs_stats.h" /* afs statistics */ +#ifdef AFS_LINUX20_ENV +#include "afs/afs_md5.h" /* For MD5 inodes - Linux only */ +#endif + #if defined(AFS_SUN56_ENV) #include #include @@ -345,246 +349,6 @@ afs_data_pointer_to_int32(const void *p) #ifdef AFS_LINUX20_ENV -struct afs_md5 { - unsigned int sz[2]; - afs_int32 counter[4]; - unsigned char save[64]; -}; - -static void AFS_MD5_Init (struct afs_md5 *m); -static void AFS_MD5_Update (struct afs_md5 *m, const void *p, size_t len); -static void AFS_MD5_Final (void *res, struct afs_md5 *m); /* u_int32 res[4] */ - -#define A m->counter[0] -#define B m->counter[1] -#define C m->counter[2] -#define D m->counter[3] -#define X data - -static void -AFS_MD5_Init (struct afs_md5 *m) -{ - m->sz[0] = 0; - m->sz[1] = 0; - D = 0x10325476; - C = 0x98badcfe; - B = 0xefcdab89; - A = 0x67452301; -} - -#define F(x,y,z) ((x & y) | (~x & z)) -#define G(x,y,z) ((x & z) | (y & ~z)) -#define H(x,y,z) (x ^ y ^ z) -#define I(x,y,z) (y ^ (x | ~z)) - -static inline afs_uint32 -cshift (afs_uint32 x, unsigned int n) -{ - return ((x << n) | (x >> (32 - n))); -} - -#define DOIT(a,b,c,d,k,s,i,OP) \ -a = b + cshift(a + OP(b,c,d) + X[k] + (i), s) - -#define DO1(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,F) -#define DO2(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,G) -#define DO3(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,H) -#define DO4(a,b,c,d,k,s,i) DOIT(a,b,c,d,k,s,i,I) - -static inline void -calc (struct afs_md5 *m, afs_uint32 *data) -{ - afs_uint32 AA, BB, CC, DD; - - AA = A; - BB = B; - CC = C; - DD = D; - - /* Round 1 */ - - DO1(A,B,C,D,0,7,0xd76aa478); - DO1(D,A,B,C,1,12,0xe8c7b756); - DO1(C,D,A,B,2,17,0x242070db); - DO1(B,C,D,A,3,22,0xc1bdceee); - - DO1(A,B,C,D,4,7,0xf57c0faf); - DO1(D,A,B,C,5,12,0x4787c62a); - DO1(C,D,A,B,6,17,0xa8304613); - DO1(B,C,D,A,7,22,0xfd469501); - - DO1(A,B,C,D,8,7,0x698098d8); - DO1(D,A,B,C,9,12,0x8b44f7af); - DO1(C,D,A,B,10,17,0xffff5bb1); - DO1(B,C,D,A,11,22,0x895cd7be); - - DO1(A,B,C,D,12,7,0x6b901122); - DO1(D,A,B,C,13,12,0xfd987193); - DO1(C,D,A,B,14,17,0xa679438e); - DO1(B,C,D,A,15,22,0x49b40821); - - /* Round 2 */ - - DO2(A,B,C,D,1,5,0xf61e2562); - DO2(D,A,B,C,6,9,0xc040b340); - DO2(C,D,A,B,11,14,0x265e5a51); - DO2(B,C,D,A,0,20,0xe9b6c7aa); - - DO2(A,B,C,D,5,5,0xd62f105d); - DO2(D,A,B,C,10,9,0x2441453); - DO2(C,D,A,B,15,14,0xd8a1e681); - DO2(B,C,D,A,4,20,0xe7d3fbc8); - - DO2(A,B,C,D,9,5,0x21e1cde6); - DO2(D,A,B,C,14,9,0xc33707d6); - DO2(C,D,A,B,3,14,0xf4d50d87); - DO2(B,C,D,A,8,20,0x455a14ed); - - DO2(A,B,C,D,13,5,0xa9e3e905); - DO2(D,A,B,C,2,9,0xfcefa3f8); - DO2(C,D,A,B,7,14,0x676f02d9); - DO2(B,C,D,A,12,20,0x8d2a4c8a); - - /* Round 3 */ - - DO3(A,B,C,D,5,4,0xfffa3942); - DO3(D,A,B,C,8,11,0x8771f681); - DO3(C,D,A,B,11,16,0x6d9d6122); - DO3(B,C,D,A,14,23,0xfde5380c); - - DO3(A,B,C,D,1,4,0xa4beea44); - DO3(D,A,B,C,4,11,0x4bdecfa9); - DO3(C,D,A,B,7,16,0xf6bb4b60); - DO3(B,C,D,A,10,23,0xbebfbc70); - - DO3(A,B,C,D,13,4,0x289b7ec6); - DO3(D,A,B,C,0,11,0xeaa127fa); - DO3(C,D,A,B,3,16,0xd4ef3085); - DO3(B,C,D,A,6,23,0x4881d05); - - DO3(A,B,C,D,9,4,0xd9d4d039); - DO3(D,A,B,C,12,11,0xe6db99e5); - DO3(C,D,A,B,15,16,0x1fa27cf8); - DO3(B,C,D,A,2,23,0xc4ac5665); - - /* Round 4 */ - - DO4(A,B,C,D,0,6,0xf4292244); - DO4(D,A,B,C,7,10,0x432aff97); - DO4(C,D,A,B,14,15,0xab9423a7); - DO4(B,C,D,A,5,21,0xfc93a039); - - DO4(A,B,C,D,12,6,0x655b59c3); - DO4(D,A,B,C,3,10,0x8f0ccc92); - DO4(C,D,A,B,10,15,0xffeff47d); - DO4(B,C,D,A,1,21,0x85845dd1); - - DO4(A,B,C,D,8,6,0x6fa87e4f); - DO4(D,A,B,C,15,10,0xfe2ce6e0); - DO4(C,D,A,B,6,15,0xa3014314); - DO4(B,C,D,A,13,21,0x4e0811a1); - - DO4(A,B,C,D,4,6,0xf7537e82); - DO4(D,A,B,C,11,10,0xbd3af235); - DO4(C,D,A,B,2,15,0x2ad7d2bb); - DO4(B,C,D,A,9,21,0xeb86d391); - - A += AA; - B += BB; - C += CC; - D += DD; -} - -/* - * From `Performance analysis of MD5' by Joseph D. Touch - */ - -#if defined(WORDS_BIGENDIAN) -static inline afs_uint32 -swap_u_int32_t (afs_uint32 t) -{ - afs_uint32 temp1, temp2; - - temp1 = cshift(t, 16); - temp2 = temp1 >> 8; - temp1 &= 0x00ff00ff; - temp2 &= 0x00ff00ff; - temp1 <<= 8; - return temp1 | temp2; -} -#endif - -struct x32{ - unsigned int a:32; - unsigned int b:32; -}; - -static void -AFS_MD5_Update (struct afs_md5 *m, const void *v, size_t len) -{ - const unsigned char *p = v; - size_t old_sz = m->sz[0]; - size_t offset; - - m->sz[0] += len * 8; - if (m->sz[0] < old_sz) - ++m->sz[1]; - offset = (old_sz / 8) % 64; - while(len > 0){ - size_t l = MIN(len, 64 - offset); - memcpy(m->save + offset, p, l); - offset += l; - p += l; - len -= l; - if(offset == 64){ -#if defined(WORDS_BIGENDIAN) - int i; - afs_uint32 temp[16]; - struct x32 *us = (struct x32*)m->save; - for(i = 0; i < 8; i++){ - temp[2*i+0] = swap_u_int32_t(us[i].a); - temp[2*i+1] = swap_u_int32_t(us[i].b); - } - calc(m, temp); -#else - calc(m, (afs_uint32*)m->save); -#endif - offset = 0; - } - } -} - -static void -AFS_MD5_Final (void *res, struct afs_md5 *m) -{ - unsigned char zeros[72]; - unsigned offset = (m->sz[0] / 8) % 64; - unsigned int dstart = (120 - offset - 1) % 64 + 1; - - *zeros = 0x80; - memset (zeros + 1, 0, sizeof(zeros) - 1); - zeros[dstart+0] = (m->sz[0] >> 0) & 0xff; - zeros[dstart+1] = (m->sz[0] >> 8) & 0xff; - zeros[dstart+2] = (m->sz[0] >> 16) & 0xff; - zeros[dstart+3] = (m->sz[0] >> 24) & 0xff; - zeros[dstart+4] = (m->sz[1] >> 0) & 0xff; - zeros[dstart+5] = (m->sz[1] >> 8) & 0xff; - zeros[dstart+6] = (m->sz[1] >> 16) & 0xff; - zeros[dstart+7] = (m->sz[1] >> 24) & 0xff; - AFS_MD5_Update (m, zeros, dstart + 8); - { - int i; - unsigned char *r = (unsigned char *)res; - - for (i = 0; i < 4; ++i) { - r[4*i] = m->counter[i] & 0xFF; - r[4*i+1] = (m->counter[i] >> 8) & 0xFF; - r[4*i+2] = (m->counter[i] >> 16) & 0xFF; - r[4*i+3] = (m->counter[i] >> 24) & 0xFF; - } - } -} - afs_int32 afs_calc_inum (afs_int32 volume, afs_int32 vnode) { afs_int32 ino, vno = vnode; -- 2.39.5