projects / deliverable / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d599388 FD |
1 | /* |
| 2 | * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
| 3 | * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com> | |
| 4 | * | |
| 5 | * SPDX-License-Identifier: LGPL-2.1-only | |
| 6 | * | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/module.h> | |
| 10 | #include <lttng/uuid.h> | |
| 11 | ||
| 12 | int lttng_uuid_from_str(const char *str_in, lttng_uuid uuid_out) | |
| 13 | { | |
| 14 | int ret = 0; | |
| 15 | lttng_uuid uuid_scan; | |
| 16 | ||
| 17 | if ((str_in == NULL) || (uuid_out == NULL)) { | |
| 18 | ret = -1; | |
| 19 | goto end; | |
| 20 | } | |
| 21 | ||
| 22 | if (strnlen(str_in, LTTNG_UUID_STR_LEN) != LTTNG_UUID_STR_LEN - 1) { | |
| 23 | ret = -1; | |
| 24 | goto end; | |
| 25 | } | |
| 26 | ||
| 27 | /* Scan to a temporary location in case of a partial match. */ | |
| 28 | if (sscanf(str_in, LTTNG_UUID_FMT, LTTNG_UUID_SCAN_VALUES(uuid_scan)) != | |
| 29 | LTTNG_UUID_LEN) { | |
| 30 | ret = -1; | |
| 31 | } | |
| 32 | ||
| 33 | memcpy(uuid_out, uuid_scan, LTTNG_UUID_LEN); | |
| 34 | end: | |
| 35 | return ret; | |
| 36 | } |