/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdio.h>
+#define _LGPL_SOURCE
#include <stdlib.h>
-#include <string.h>
#include <unistd.h>
#include <common/error.h>
#include "utils.h"
+#include "snapshot.h"
+#include "lttng-sessiond.h"
+
+int ht_cleanup_pipe[2] = { -1, -1 };
/*
* Write to writable pipe used to notify a thread.
*/
int notify_thread_pipe(int wpipe)
{
- int ret;
+ ssize_t ret;
+
+ /* Ignore if the pipe is invalid. */
+ if (wpipe < 0) {
+ return 0;
+ }
- ret = write(wpipe, "!", 1);
- if (ret < 0) {
+ ret = lttng_write(wpipe, "!", 1);
+ if (ret < 1) {
PERROR("write poll pipe");
}
- return ret;
+ return (int) ret;
}
-/*
- * Return pointer to home directory path using the env variable HOME.
- *
- * No home, NULL is returned.
- */
-const char *get_home_dir(void)
+void ht_cleanup_push(struct lttng_ht *ht)
{
- return ((const char *) getenv("HOME"));
-}
+ ssize_t ret;
+ int fd = ht_cleanup_pipe[1];
-/*
- * Create a pipe in dst.
- */
-int utils_create_pipe(int *dst)
-{
- int ret;
-
- if (dst == NULL) {
- return -1;
+ if (!ht) {
+ return;
}
-
- ret = pipe(dst);
- if (ret < 0) {
- PERROR("create pipe");
+ if (fd < 0)
+ return;
+ ret = lttng_write(fd, &ht, sizeof(ht));
+ if (ret < sizeof(ht)) {
+ PERROR("write ht cleanup pipe %d", fd);
+ if (ret < 0) {
+ ret = -errno;
+ }
+ goto error;
}
- return ret;
+ /* All good. Don't send back the write positive ret value. */
+ ret = 0;
+error:
+ assert(!ret);
}
-/*
- * Create pipe and set CLOEXEC flag to both fd.
- *
- * Make sure the pipe opened by this function are closed at some point. Use
- * utils_close_pipe().
- */
-int utils_create_pipe_cloexec(int *dst)
+int loglevels_match(int a_loglevel_type, int a_loglevel_value,
+ int b_loglevel_type, int b_loglevel_value, int loglevel_all_type)
{
- int ret, i;
-
- if (dst == NULL) {
- return -1;
+ int match = 1;
+
+ if (a_loglevel_type == b_loglevel_type) {
+ /* Same loglevel type. */
+ if (b_loglevel_type != loglevel_all_type) {
+ /*
+ * Loglevel value must also match since the loglevel
+ * type is not all.
+ */
+ if (a_loglevel_value != b_loglevel_value) {
+ match = 0;
+ }
+ }
+ } else {
+ /* Loglevel type is different: no match. */
+ match = 0;
}
- ret = utils_create_pipe(dst);
- if (ret < 0) {
- goto error;
- }
+ return match;
+}
- for (i = 0; i < 2; i++) {
- ret = fcntl(dst[i], F_SETFD, FD_CLOEXEC);
- if (ret < 0) {
- PERROR("fcntl pipe cloexec");
- goto error;
- }
- }
+const char *session_get_base_path(const struct ltt_session *session)
+{
+ return consumer_output_get_base_path(session->consumer);
+}
-error:
- return ret;
+const char *consumer_output_get_base_path(const struct consumer_output *output)
+{
+ return output->type == CONSUMER_DST_LOCAL ?
+ output->dst.session_root_path :
+ output->dst.net.base_dir;
}
/*
- * Close both read and write side of the pipe.
+ * Allocate a filter and copy the given original filter.
+ *
+ * Return allocated filter or NULL on error.
*/
-void utils_close_pipe(int *src)
+struct lttng_filter_bytecode *lttng_filter_bytecode_copy(
+ const struct lttng_filter_bytecode *orig_f)
{
- int i, ret;
+ struct lttng_filter_bytecode *filter = NULL;
- if (src == NULL) {
- return;
+ /* Copy filter bytecode */
+ filter = zmalloc(sizeof(*filter) + orig_f->len);
+ if (!filter) {
+ PERROR("zmalloc alloc filter bytecode");
+ goto error;
}
- for (i = 0; i < 2; i++) {
- /* Safety check */
- if (src[i] < 0) {
- continue;
- }
+ memcpy(filter, orig_f, sizeof(*filter) + orig_f->len);
- ret = close(src[i]);
- if (ret) {
- PERROR("close pipe");
- }
- }
+error:
+ return filter;
}