fix: relayd: unaligned access in trace_chunk_registry_ht_key_hash

[lttng-tools.git] / src / common / uuid.c

diff --git a/src/common/uuid.c b/src/common/uuid.c
deleted file mode 100644 (file)
index b0b74c9..0000000
--- a/src/common/uuid.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
- *
- * This library 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 this library; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <common/compat/string.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#include "uuid.h"
-
-static const lttng_uuid nil_uuid;
-static bool lttng_uuid_is_init;
-
-void lttng_uuid_to_str(const lttng_uuid uuid, char *uuid_str)
-{
-       sprintf(uuid_str, LTTNG_UUID_FMT, LTTNG_UUID_FMT_VALUES(uuid));
-}
-
-int lttng_uuid_from_str(const char *str_in, lttng_uuid uuid_out)
-{
-       int ret = 0;
-       lttng_uuid uuid_scan;
-
-       if ((str_in == NULL) || (uuid_out == NULL)) {
-               ret = -1;
-               goto end;
-       }
-
-       if (lttng_strnlen(str_in, LTTNG_UUID_STR_LEN) != LTTNG_UUID_STR_LEN - 1) {
-               ret = -1;
-               goto end;
-       }
-
-       /* Scan to a temporary location in case of a partial match. */
-       if (sscanf(str_in, LTTNG_UUID_FMT, LTTNG_UUID_SCAN_VALUES(uuid_scan)) !=
-                       LTTNG_UUID_LEN) {
-               ret = -1;
-       }
-
-       lttng_uuid_copy(uuid_out, uuid_scan);
-end:
-       return ret;
-}
-
-bool lttng_uuid_is_equal(const lttng_uuid a, const lttng_uuid b)
-{
-       return memcmp(a, b, LTTNG_UUID_LEN) == 0;
-}
-
-bool lttng_uuid_is_nil(const lttng_uuid uuid)
-{
-       return memcmp(nil_uuid, uuid, sizeof(lttng_uuid)) == 0;
-}
-
-void lttng_uuid_copy(lttng_uuid dst, const lttng_uuid src)
-{
-       memcpy(dst, src, LTTNG_UUID_LEN);
-}
-
-/*
- * Generate a random UUID according to RFC4122, section 4.4.
- */
-int lttng_uuid_generate(lttng_uuid uuid_out)
-{
-       int i, ret = 0;
-
-       if (uuid_out == NULL) {
-               ret = -1;
-               goto end;
-       }
-
-       if (!lttng_uuid_is_init) {
-               /*
-                * We don't need cryptographic quality randomness to
-                * generate UUIDs, seed rand with the epoch.
-                */
-               const time_t epoch = time(NULL);
-
-               if (epoch == (time_t) -1) {
-                       ret = -1;
-                       goto end;
-               }
-               srand(epoch);
-
-               lttng_uuid_is_init = true;
-       }
-
-       /*
-        * Generate 16 bytes of random bits.
-        */
-       for (i = 0; i < LTTNG_UUID_LEN; i++) {
-               uuid_out[i] = (uint8_t) rand();
-       }
-
-       /*
-        * Set the two most significant bits (bits 6 and 7) of the
-        * clock_seq_hi_and_reserved to zero and one, respectively.
-        */
-       uuid_out[8] &= ~(1 << 6);
-       uuid_out[8] |= (1 << 7);
-
-       /*
-        * Set the four most significant bits (bits 12 through 15) of the
-        * time_hi_and_version field to the 4-bit version number from
-        * Section 4.1.3.
-        */
-       uuid_out[6] &= 0x0f;
-       uuid_out[6] |= (LTTNG_UUID_VER << 4);
-
-end:
-       return ret;
-}