/** * Author......: See docs/credits.txt * License.....: MIT */ #define NEW_SIMD_CODE #include "inc_vendor.cl" #include "inc_hash_constants.h" #include "inc_hash_functions.cl" #include "inc_types.cl" #include "inc_common.cl" #include "inc_rp_optimized.h" #include "inc_rp_optimized.cl" #include "inc_simd.cl" __constant u64a keccakf_rndc[24] = { 0x0000000000000001, 0x0000000000008082, 0x800000000000808a, 0x8000000080008000, 0x000000000000808b, 0x0000000080000001, 0x8000000080008081, 0x8000000000008009, 0x000000000000008a, 0x0000000000000088, 0x0000000080008009, 0x000000008000000a, 0x000000008000808b, 0x800000000000008b, 0x8000000000008089, 0x8000000000008003, 0x8000000000008002, 0x8000000000000080, 0x000000000000800a, 0x800000008000000a, 0x8000000080008081, 0x8000000000008080, 0x0000000080000001, 0x8000000080008008 }; #ifndef KECCAK_ROUNDS #define KECCAK_ROUNDS 24 #endif __kernel void m17800_m04 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { /** * modifier */ const u64 lid = get_local_id (0); /** * base */ const u64 gid = get_global_id (0); if (gid >= gid_max) return; u32 pw_buf0[4]; u32 pw_buf1[4]; pw_buf0[0] = pws[gid].i[0]; pw_buf0[1] = pws[gid].i[1]; pw_buf0[2] = pws[gid].i[2]; pw_buf0[3] = pws[gid].i[3]; pw_buf1[0] = pws[gid].i[4]; pw_buf1[1] = pws[gid].i[5]; pw_buf1[2] = pws[gid].i[6]; pw_buf1[3] = pws[gid].i[7]; const u32 pw_len = pws[gid].pw_len; /** * loop */ for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE) { u32x w0[4] = { 0 }; u32x w1[4] = { 0 }; u32x w2[4] = { 0 }; u32x w3[4] = { 0 }; const u32x out_len = apply_rules_vect (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1); append_0x01_2x4_VV (w0, w1, out_len); /** * Keccak */ u64x a00 = hl32_to_64 (w0[1], w0[0]); u64x a01 = hl32_to_64 (w0[3], w0[2]); u64x a02 = hl32_to_64 (w1[1], w1[0]); u64x a03 = hl32_to_64 (w1[3], w1[2]); u64x a04 = 0; u64x a10 = 0; u64x a11 = 0; u64x a12 = 0; u64x a13 = 0; u64x a14 = 0; u64x a20 = 0; u64x a21 = 0; u64x a22 = 0; u64x a23 = 0; u64x a24 = 0; u64x a30 = 0; u64x a31 = 0x8000000000000000; u64x a32 = 0; u64x a33 = 0; u64x a34 = 0; u64x a40 = 0; u64x a41 = 0; u64x a42 = 0; u64x a43 = 0; u64x a44 = 0; #define Rho_Pi(ad,r) \ bc0 = ad; \ ad = rotl64 (t, r); \ t = bc0; \ #ifdef _unroll #pragma unroll #endif for (int round = 0; round < KECCAK_ROUNDS - 1; round++) { // Theta u64x bc0 = a00 ^ a10 ^ a20 ^ a30 ^ a40; u64x bc1 = a01 ^ a11 ^ a21 ^ a31 ^ a41; u64x bc2 = a02 ^ a12 ^ a22 ^ a32 ^ a42; u64x bc3 = a03 ^ a13 ^ a23 ^ a33 ^ a43; u64x bc4 = a04 ^ a14 ^ a24 ^ a34 ^ a44; u64x t; t = bc4 ^ rotl64 (bc1, 1); a00 ^= t; a10 ^= t; a20 ^= t; a30 ^= t; a40 ^= t; t = bc0 ^ rotl64 (bc2, 1); a01 ^= t; a11 ^= t; a21 ^= t; a31 ^= t; a41 ^= t; t = bc1 ^ rotl64 (bc3, 1); a02 ^= t; a12 ^= t; a22 ^= t; a32 ^= t; a42 ^= t; t = bc2 ^ rotl64 (bc4, 1); a03 ^= t; a13 ^= t; a23 ^= t; a33 ^= t; a43 ^= t; t = bc3 ^ rotl64 (bc0, 1); a04 ^= t; a14 ^= t; a24 ^= t; a34 ^= t; a44 ^= t; // Rho Pi t = a01; Rho_Pi (a20, 1); Rho_Pi (a12, 3); Rho_Pi (a21, 6); Rho_Pi (a32, 10); Rho_Pi (a33, 15); Rho_Pi (a03, 21); Rho_Pi (a10, 28); Rho_Pi (a31, 36); Rho_Pi (a13, 45); Rho_Pi (a41, 55); Rho_Pi (a44, 2); Rho_Pi (a04, 14); Rho_Pi (a30, 27); Rho_Pi (a43, 41); Rho_Pi (a34, 56); Rho_Pi (a23, 8); Rho_Pi (a22, 25); Rho_Pi (a02, 43); Rho_Pi (a40, 62); Rho_Pi (a24, 18); Rho_Pi (a42, 39); Rho_Pi (a14, 61); Rho_Pi (a11, 20); Rho_Pi (a01, 44); // Chi bc0 = a00; bc1 = a01; bc2 = a02; bc3 = a03; bc4 = a04; a00 ^= ~bc1 & bc2; a01 ^= ~bc2 & bc3; a02 ^= ~bc3 & bc4; a03 ^= ~bc4 & bc0; a04 ^= ~bc0 & bc1; bc0 = a10; bc1 = a11; bc2 = a12; bc3 = a13; bc4 = a14; a10 ^= ~bc1 & bc2; a11 ^= ~bc2 & bc3; a12 ^= ~bc3 & bc4; a13 ^= ~bc4 & bc0; a14 ^= ~bc0 & bc1; bc0 = a20; bc1 = a21; bc2 = a22; bc3 = a23; bc4 = a24; a20 ^= ~bc1 & bc2; a21 ^= ~bc2 & bc3; a22 ^= ~bc3 & bc4; a23 ^= ~bc4 & bc0; a24 ^= ~bc0 & bc1; bc0 = a30; bc1 = a31; bc2 = a32; bc3 = a33; bc4 = a34; a30 ^= ~bc1 & bc2; a31 ^= ~bc2 & bc3; a32 ^= ~bc3 & bc4; a33 ^= ~bc4 & bc0; a34 ^= ~bc0 & bc1; bc0 = a40; bc1 = a41; bc2 = a42; bc3 = a43; bc4 = a44; a40 ^= ~bc1 & bc2; a41 ^= ~bc2 & bc3; a42 ^= ~bc3 & bc4; a43 ^= ~bc4 & bc0; a44 ^= ~bc0 & bc1; // Iota a00 ^= keccakf_rndc[round]; } // Theta u64x bc0 = a00 ^ a10 ^ a20 ^ a30 ^ a40; u64x bc1 = a01 ^ a11 ^ a21 ^ a31 ^ a41; u64x bc2 = a02 ^ a12 ^ a22 ^ a32 ^ a42; u64x bc3 = a03 ^ a13 ^ a23 ^ a33 ^ a43; u64x bc4 = a04 ^ a14 ^ a24 ^ a34 ^ a44; u64x t; t = bc4 ^ rotl64 (bc1, 1); a00 ^= t; a10 ^= t; a20 ^= t; a30 ^= t; t = bc0 ^ rotl64 (bc2, 1); a21 ^= t; a31 ^= t; a41 ^= t; t = bc1 ^ rotl64 (bc3, 1); a02 ^= t; a12 ^= t; a22 ^= t; a32 ^= t; t = bc2 ^ rotl64 (bc4, 1); a03 ^= t; a13 ^= t; a23 ^= t; a33 ^= t; a43 ^= t; t = bc3 ^ rotl64 (bc0, 1); a04 ^= t; a34 ^= t; a44 ^= t; // Rho Pi t = a01; Rho_Pi (a20, 1); Rho_Pi (a12, 3); Rho_Pi (a21, 6); Rho_Pi (a32, 10); Rho_Pi (a33, 15); Rho_Pi (a03, 21); Rho_Pi (a10, 28); Rho_Pi (a31, 36); Rho_Pi (a13, 45); Rho_Pi (a41, 55); Rho_Pi (a44, 2); Rho_Pi (a04, 14); Rho_Pi (a30, 27); Rho_Pi (a43, 41); Rho_Pi (a34, 56); Rho_Pi (a23, 8); Rho_Pi (a22, 25); Rho_Pi (a02, 43); #undef Rho_Pi bc0 = a00; bc2 = a02; bc3 = a03; bc4 = a04; a02 ^= ~bc3 & bc4; a03 ^= ~bc4 & bc0; const u32x r0 = l32_from_64 (a03); const u32x r1 = h32_from_64 (a03); const u32x r2 = l32_from_64 (a02); const u32x r3 = h32_from_64 (a02); COMPARE_M_SIMD (r0, r1, r2, r3); } } __kernel void m17800_m08 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { } __kernel void m17800_m16 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { } __kernel void m17800_s04 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { /** * modifier */ const u64 lid = get_local_id (0); /** * base */ const u64 gid = get_global_id (0); if (gid >= gid_max) return; u32 pw_buf0[4]; u32 pw_buf1[4]; pw_buf0[0] = pws[gid].i[0]; pw_buf0[1] = pws[gid].i[1]; pw_buf0[2] = pws[gid].i[2]; pw_buf0[3] = pws[gid].i[3]; pw_buf1[0] = pws[gid].i[4]; pw_buf1[1] = pws[gid].i[5]; pw_buf1[2] = pws[gid].i[6]; pw_buf1[3] = pws[gid].i[7]; const u32 pw_len = pws[gid].pw_len; /** * digest */ const u32 search[4] = { digests_buf[digests_offset].digest_buf[DGST_R0], digests_buf[digests_offset].digest_buf[DGST_R1], digests_buf[digests_offset].digest_buf[DGST_R2], digests_buf[digests_offset].digest_buf[DGST_R3] }; /** * loop */ for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE) { u32x w0[4] = { 0 }; u32x w1[4] = { 0 }; u32x w2[4] = { 0 }; u32x w3[4] = { 0 }; const u32x out_len = apply_rules_vect (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1); append_0x01_2x4_VV (w0, w1, out_len); /** * Keccak */ u64x a00 = hl32_to_64 (w0[1], w0[0]); u64x a01 = hl32_to_64 (w0[3], w0[2]); u64x a02 = hl32_to_64 (w1[1], w1[0]); u64x a03 = hl32_to_64 (w1[3], w1[2]); u64x a04 = 0; u64x a10 = 0; u64x a11 = 0; u64x a12 = 0; u64x a13 = 0; u64x a14 = 0; u64x a20 = 0; u64x a21 = 0; u64x a22 = 0; u64x a23 = 0; u64x a24 = 0; u64x a30 = 0; u64x a31 = 0x8000000000000000; u64x a32 = 0; u64x a33 = 0; u64x a34 = 0; u64x a40 = 0; u64x a41 = 0; u64x a42 = 0; u64x a43 = 0; u64x a44 = 0; #define Rho_Pi(ad,r) \ bc0 = ad; \ ad = rotl64 (t, r); \ t = bc0; \ #ifdef _unroll #pragma unroll #endif for (int round = 0; round < KECCAK_ROUNDS - 1; round++) { // Theta u64x bc0 = a00 ^ a10 ^ a20 ^ a30 ^ a40; u64x bc1 = a01 ^ a11 ^ a21 ^ a31 ^ a41; u64x bc2 = a02 ^ a12 ^ a22 ^ a32 ^ a42; u64x bc3 = a03 ^ a13 ^ a23 ^ a33 ^ a43; u64x bc4 = a04 ^ a14 ^ a24 ^ a34 ^ a44; u64x t; t = bc4 ^ rotl64 (bc1, 1); a00 ^= t; a10 ^= t; a20 ^= t; a30 ^= t; a40 ^= t; t = bc0 ^ rotl64 (bc2, 1); a01 ^= t; a11 ^= t; a21 ^= t; a31 ^= t; a41 ^= t; t = bc1 ^ rotl64 (bc3, 1); a02 ^= t; a12 ^= t; a22 ^= t; a32 ^= t; a42 ^= t; t = bc2 ^ rotl64 (bc4, 1); a03 ^= t; a13 ^= t; a23 ^= t; a33 ^= t; a43 ^= t; t = bc3 ^ rotl64 (bc0, 1); a04 ^= t; a14 ^= t; a24 ^= t; a34 ^= t; a44 ^= t; // Rho Pi t = a01; Rho_Pi (a20, 1); Rho_Pi (a12, 3); Rho_Pi (a21, 6); Rho_Pi (a32, 10); Rho_Pi (a33, 15); Rho_Pi (a03, 21); Rho_Pi (a10, 28); Rho_Pi (a31, 36); Rho_Pi (a13, 45); Rho_Pi (a41, 55); Rho_Pi (a44, 2); Rho_Pi (a04, 14); Rho_Pi (a30, 27); Rho_Pi (a43, 41); Rho_Pi (a34, 56); Rho_Pi (a23, 8); Rho_Pi (a22, 25); Rho_Pi (a02, 43); Rho_Pi (a40, 62); Rho_Pi (a24, 18); Rho_Pi (a42, 39); Rho_Pi (a14, 61); Rho_Pi (a11, 20); Rho_Pi (a01, 44); // Chi bc0 = a00; bc1 = a01; bc2 = a02; bc3 = a03; bc4 = a04; a00 ^= ~bc1 & bc2; a01 ^= ~bc2 & bc3; a02 ^= ~bc3 & bc4; a03 ^= ~bc4 & bc0; a04 ^= ~bc0 & bc1; bc0 = a10; bc1 = a11; bc2 = a12; bc3 = a13; bc4 = a14; a10 ^= ~bc1 & bc2; a11 ^= ~bc2 & bc3; a12 ^= ~bc3 & bc4; a13 ^= ~bc4 & bc0; a14 ^= ~bc0 & bc1; bc0 = a20; bc1 = a21; bc2 = a22; bc3 = a23; bc4 = a24; a20 ^= ~bc1 & bc2; a21 ^= ~bc2 & bc3; a22 ^= ~bc3 & bc4; a23 ^= ~bc4 & bc0; a24 ^= ~bc0 & bc1; bc0 = a30; bc1 = a31; bc2 = a32; bc3 = a33; bc4 = a34; a30 ^= ~bc1 & bc2; a31 ^= ~bc2 & bc3; a32 ^= ~bc3 & bc4; a33 ^= ~bc4 & bc0; a34 ^= ~bc0 & bc1; bc0 = a40; bc1 = a41; bc2 = a42; bc3 = a43; bc4 = a44; a40 ^= ~bc1 & bc2; a41 ^= ~bc2 & bc3; a42 ^= ~bc3 & bc4; a43 ^= ~bc4 & bc0; a44 ^= ~bc0 & bc1; // Iota a00 ^= keccakf_rndc[round]; } // Theta u64x bc0 = a00 ^ a10 ^ a20 ^ a30 ^ a40; u64x bc1 = a01 ^ a11 ^ a21 ^ a31 ^ a41; u64x bc2 = a02 ^ a12 ^ a22 ^ a32 ^ a42; u64x bc3 = a03 ^ a13 ^ a23 ^ a33 ^ a43; u64x bc4 = a04 ^ a14 ^ a24 ^ a34 ^ a44; u64x t; t = bc4 ^ rotl64 (bc1, 1); a00 ^= t; a10 ^= t; a20 ^= t; a30 ^= t; t = bc0 ^ rotl64 (bc2, 1); a21 ^= t; a31 ^= t; a41 ^= t; t = bc1 ^ rotl64 (bc3, 1); a02 ^= t; a12 ^= t; a22 ^= t; a32 ^= t; t = bc2 ^ rotl64 (bc4, 1); a03 ^= t; a13 ^= t; a23 ^= t; a33 ^= t; a43 ^= t; t = bc3 ^ rotl64 (bc0, 1); a04 ^= t; a34 ^= t; a44 ^= t; // Rho Pi t = a01; Rho_Pi (a20, 1); Rho_Pi (a12, 3); Rho_Pi (a21, 6); Rho_Pi (a32, 10); Rho_Pi (a33, 15); Rho_Pi (a03, 21); Rho_Pi (a10, 28); Rho_Pi (a31, 36); Rho_Pi (a13, 45); Rho_Pi (a41, 55); Rho_Pi (a44, 2); Rho_Pi (a04, 14); Rho_Pi (a30, 27); Rho_Pi (a43, 41); Rho_Pi (a34, 56); Rho_Pi (a23, 8); Rho_Pi (a22, 25); Rho_Pi (a02, 43); #undef Rho_Pi bc0 = a00; bc2 = a02; bc3 = a03; bc4 = a04; a02 ^= ~bc3 & bc4; a03 ^= ~bc4 & bc0; const u32x r0 = l32_from_64 (a03); const u32x r1 = h32_from_64 (a03); const u32x r2 = l32_from_64 (a02); const u32x r3 = h32_from_64 (a02); COMPARE_S_SIMD (r0, r1, r2, r3); } } __kernel void m17800_s08 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { } __kernel void m17800_s16 (__global pw_t *pws, __constant const kernel_rule_t *rules_buf, __global const pw_t *combs_buf, __global const bf_t *bfs_buf, __global void *tmps, __global void *hooks, __global const u32 *bitmaps_buf_s1_a, __global const u32 *bitmaps_buf_s1_b, __global const u32 *bitmaps_buf_s1_c, __global const u32 *bitmaps_buf_s1_d, __global const u32 *bitmaps_buf_s2_a, __global const u32 *bitmaps_buf_s2_b, __global const u32 *bitmaps_buf_s2_c, __global const u32 *bitmaps_buf_s2_d, __global plain_t *plains_buf, __global const digest_t *digests_buf, __global u32 *hashes_shown, __global const salt_t *salt_bufs, __global const void *esalt_bufs, __global u32 *d_return_buf, __global u32 *d_scryptV0_buf, __global u32 *d_scryptV1_buf, __global u32 *d_scryptV2_buf, __global u32 *d_scryptV3_buf, const u32 bitmap_mask, const u32 bitmap_shift1, const u32 bitmap_shift2, const u32 salt_pos, const u32 loop_pos, const u32 loop_cnt, const u32 il_cnt, const u32 digests_cnt, const u32 digests_offset, const u32 combs_mode, const u64 gid_max) { }