From 7b15a68d12e2df7f45c4311d0281ff9a78693e81 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Wed, 25 Nov 2020 17:57:35 -0800 Subject: upstream: import some hacked systemd headers This brings journal-file data structures and byte swapping helpers I may as well just reuse. I've had to do some minor messing about to make things workable in isolation out of the systemd tree without pulling in too much. I've also added a new HashedObjectHeader type to encompass the slightly larger common header components of FieldObject and DataObject to facilitate a generic hash table iterator that can operate on just loading HashedObjectHeader when nothing more than the object size is needed for accounting. Basically the HashedObjectHeader is ObjectHeader+hash+next_hash_offset. --- src/upstream/sd-id128.h | 124 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 src/upstream/sd-id128.h (limited to 'src/upstream/sd-id128.h') diff --git a/src/upstream/sd-id128.h b/src/upstream/sd-id128.h new file mode 100644 index 0000000..9b00b76 --- /dev/null +++ b/src/upstream/sd-id128.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#ifndef foosdid128hfoo +#define foosdid128hfoo + +/*** + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include +#include + +#include "_sd-common.h" + +_SD_BEGIN_DECLARATIONS; + +/* 128-bit ID APIs. See sd-id128(3) for more information. */ + +typedef union sd_id128 sd_id128_t; + +union sd_id128 { + uint8_t bytes[16]; + uint64_t qwords[2]; +}; + +#define SD_ID128_STRING_MAX 33 + +char *sd_id128_to_string(sd_id128_t id, char s[_SD_ARRAY_STATIC SD_ID128_STRING_MAX]); +int sd_id128_from_string(const char *s, sd_id128_t *ret); + +int sd_id128_randomize(sd_id128_t *ret); + +int sd_id128_get_machine(sd_id128_t *ret); +int sd_id128_get_boot(sd_id128_t *ret); +int sd_id128_get_invocation(sd_id128_t *ret); + +int sd_id128_get_machine_app_specific(sd_id128_t app_id, sd_id128_t *ret); +int sd_id128_get_boot_app_specific(sd_id128_t app_id, sd_id128_t *ret); + +#define SD_ID128_ARRAY(v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) \ + { .bytes = { 0x##v0, 0x##v1, 0x##v2, 0x##v3, 0x##v4, 0x##v5, 0x##v6, 0x##v7, \ + 0x##v8, 0x##v9, 0x##v10, 0x##v11, 0x##v12, 0x##v13, 0x##v14, 0x##v15 }} + +#define SD_ID128_MAKE(v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15) \ + ((const sd_id128_t) SD_ID128_ARRAY(v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15)) + +/* Note that SD_ID128_FORMAT_VAL will evaluate the passed argument 16 + * times. It is hence not a good idea to call this macro with an + * expensive function as parameter or an expression with side + * effects */ + +#define SD_ID128_FORMAT_STR "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" +#define SD_ID128_FORMAT_VAL(x) (x).bytes[0], (x).bytes[1], (x).bytes[2], (x).bytes[3], (x).bytes[4], (x).bytes[5], (x).bytes[6], (x).bytes[7], (x).bytes[8], (x).bytes[9], (x).bytes[10], (x).bytes[11], (x).bytes[12], (x).bytes[13], (x).bytes[14], (x).bytes[15] + +/* Like SD_ID128_FORMAT_STR, but formats as UUID, not in plain format */ +#define SD_ID128_UUID_FORMAT_STR "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x" + +#define SD_ID128_CONST_STR(x) \ + ((const char[SD_ID128_STRING_MAX]) { \ + ((x).bytes[0] >> 4) >= 10 ? 'a' + ((x).bytes[0] >> 4) - 10 : '0' + ((x).bytes[0] >> 4), \ + ((x).bytes[0] & 15) >= 10 ? 'a' + ((x).bytes[0] & 15) - 10 : '0' + ((x).bytes[0] & 15), \ + ((x).bytes[1] >> 4) >= 10 ? 'a' + ((x).bytes[1] >> 4) - 10 : '0' + ((x).bytes[1] >> 4), \ + ((x).bytes[1] & 15) >= 10 ? 'a' + ((x).bytes[1] & 15) - 10 : '0' + ((x).bytes[1] & 15), \ + ((x).bytes[2] >> 4) >= 10 ? 'a' + ((x).bytes[2] >> 4) - 10 : '0' + ((x).bytes[2] >> 4), \ + ((x).bytes[2] & 15) >= 10 ? 'a' + ((x).bytes[2] & 15) - 10 : '0' + ((x).bytes[2] & 15), \ + ((x).bytes[3] >> 4) >= 10 ? 'a' + ((x).bytes[3] >> 4) - 10 : '0' + ((x).bytes[3] >> 4), \ + ((x).bytes[3] & 15) >= 10 ? 'a' + ((x).bytes[3] & 15) - 10 : '0' + ((x).bytes[3] & 15), \ + ((x).bytes[4] >> 4) >= 10 ? 'a' + ((x).bytes[4] >> 4) - 10 : '0' + ((x).bytes[4] >> 4), \ + ((x).bytes[4] & 15) >= 10 ? 'a' + ((x).bytes[4] & 15) - 10 : '0' + ((x).bytes[4] & 15), \ + ((x).bytes[5] >> 4) >= 10 ? 'a' + ((x).bytes[5] >> 4) - 10 : '0' + ((x).bytes[5] >> 4), \ + ((x).bytes[5] & 15) >= 10 ? 'a' + ((x).bytes[5] & 15) - 10 : '0' + ((x).bytes[5] & 15), \ + ((x).bytes[6] >> 4) >= 10 ? 'a' + ((x).bytes[6] >> 4) - 10 : '0' + ((x).bytes[6] >> 4), \ + ((x).bytes[6] & 15) >= 10 ? 'a' + ((x).bytes[6] & 15) - 10 : '0' + ((x).bytes[6] & 15), \ + ((x).bytes[7] >> 4) >= 10 ? 'a' + ((x).bytes[7] >> 4) - 10 : '0' + ((x).bytes[7] >> 4), \ + ((x).bytes[7] & 15) >= 10 ? 'a' + ((x).bytes[7] & 15) - 10 : '0' + ((x).bytes[7] & 15), \ + ((x).bytes[8] >> 4) >= 10 ? 'a' + ((x).bytes[8] >> 4) - 10 : '0' + ((x).bytes[8] >> 4), \ + ((x).bytes[8] & 15) >= 10 ? 'a' + ((x).bytes[8] & 15) - 10 : '0' + ((x).bytes[8] & 15), \ + ((x).bytes[9] >> 4) >= 10 ? 'a' + ((x).bytes[9] >> 4) - 10 : '0' + ((x).bytes[9] >> 4), \ + ((x).bytes[9] & 15) >= 10 ? 'a' + ((x).bytes[9] & 15) - 10 : '0' + ((x).bytes[9] & 15), \ + ((x).bytes[10] >> 4) >= 10 ? 'a' + ((x).bytes[10] >> 4) - 10 : '0' + ((x).bytes[10] >> 4), \ + ((x).bytes[10] & 15) >= 10 ? 'a' + ((x).bytes[10] & 15) - 10 : '0' + ((x).bytes[10] & 15), \ + ((x).bytes[11] >> 4) >= 10 ? 'a' + ((x).bytes[11] >> 4) - 10 : '0' + ((x).bytes[11] >> 4), \ + ((x).bytes[11] & 15) >= 10 ? 'a' + ((x).bytes[11] & 15) - 10 : '0' + ((x).bytes[11] & 15), \ + ((x).bytes[12] >> 4) >= 10 ? 'a' + ((x).bytes[12] >> 4) - 10 : '0' + ((x).bytes[12] >> 4), \ + ((x).bytes[12] & 15) >= 10 ? 'a' + ((x).bytes[12] & 15) - 10 : '0' + ((x).bytes[12] & 15), \ + ((x).bytes[13] >> 4) >= 10 ? 'a' + ((x).bytes[13] >> 4) - 10 : '0' + ((x).bytes[13] >> 4), \ + ((x).bytes[13] & 15) >= 10 ? 'a' + ((x).bytes[13] & 15) - 10 : '0' + ((x).bytes[13] & 15), \ + ((x).bytes[14] >> 4) >= 10 ? 'a' + ((x).bytes[14] >> 4) - 10 : '0' + ((x).bytes[14] >> 4), \ + ((x).bytes[14] & 15) >= 10 ? 'a' + ((x).bytes[14] & 15) - 10 : '0' + ((x).bytes[14] & 15), \ + ((x).bytes[15] >> 4) >= 10 ? 'a' + ((x).bytes[15] >> 4) - 10 : '0' + ((x).bytes[15] >> 4), \ + ((x).bytes[15] & 15) >= 10 ? 'a' + ((x).bytes[15] & 15) - 10 : '0' + ((x).bytes[15] & 15), \ + 0 }) + +#define SD_ID128_MAKE_STR(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) \ + #a #b #c #d #e #f #g #h #i #j #k #l #m #n #o #p + +_sd_pure_ static __inline__ int sd_id128_equal(sd_id128_t a, sd_id128_t b) { + return memcmp(&a, &b, 16) == 0; +} + +_sd_pure_ static __inline__ int sd_id128_is_null(sd_id128_t a) { + return a.qwords[0] == 0 && a.qwords[1] == 0; +} + +_sd_pure_ static __inline__ int sd_id128_is_allf(sd_id128_t a) { + return a.qwords[0] == UINT64_C(0xFFFFFFFFFFFFFFFF) && a.qwords[1] == UINT64_C(0xFFFFFFFFFFFFFFFF); +} + +#define SD_ID128_NULL ((const sd_id128_t) { .qwords = { 0, 0 }}) +#define SD_ID128_ALLF ((const sd_id128_t) { .qwords = { UINT64_C(0xFFFFFFFFFFFFFFFF), UINT64_C(0xFFFFFFFFFFFFFFFF) }}) + +_SD_END_DECLARATIONS; + +#endif -- cgit v1.2.3