e43eb667b5
The process title mutex was destroyed on library unload without ensuring it was initialized - and it may not be because it's initialized lazily. On most platforms it worked by accident because an "all zeroes" mutex is synonymous with an initialized and unlocked mutex, but not on NetBSD. Refs: https://github.com/libuv/libuv/pull/3286#issuecomment-1014058782
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* Copyright libuv project contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "uv.h"
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#include "internal.h"
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#include <sys/types.h>
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#include <unistd.h>
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static uv_mutex_t process_title_mutex;
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static uv_once_t process_title_mutex_once = UV_ONCE_INIT;
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static char* process_title;
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static void init_process_title_mutex_once(void) {
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if (uv_mutex_init(&process_title_mutex))
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abort();
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}
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void uv__process_title_cleanup(void) {
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uv_once(&process_title_mutex_once, init_process_title_mutex_once);
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uv_mutex_destroy(&process_title_mutex);
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}
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char** uv_setup_args(int argc, char** argv) {
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process_title = argc > 0 ? uv__strdup(argv[0]) : NULL;
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return argv;
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}
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int uv_set_process_title(const char* title) {
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char* new_title;
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new_title = uv__strdup(title);
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if (new_title == NULL)
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return UV_ENOMEM;
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uv_once(&process_title_mutex_once, init_process_title_mutex_once);
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uv_mutex_lock(&process_title_mutex);
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uv__free(process_title);
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process_title = new_title;
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setproctitle("%s", title);
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uv_mutex_unlock(&process_title_mutex);
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return 0;
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}
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int uv_get_process_title(char* buffer, size_t size) {
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size_t len;
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if (buffer == NULL || size == 0)
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return UV_EINVAL;
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uv_once(&process_title_mutex_once, init_process_title_mutex_once);
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uv_mutex_lock(&process_title_mutex);
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if (process_title != NULL) {
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len = strlen(process_title) + 1;
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if (size < len) {
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uv_mutex_unlock(&process_title_mutex);
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return UV_ENOBUFS;
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}
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memcpy(buffer, process_title, len);
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} else {
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len = 0;
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}
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uv_mutex_unlock(&process_title_mutex);
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buffer[len] = '\0';
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return 0;
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}
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