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9b86c49710
When is_valid_tracepoint() returns 1, need to call put_events_file() to
free `dir_path`.
Fixes: 25a7d91427 ("perf parse-events: Use get/put_events_file()")
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230421025953.173826-1-yangjihong1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "tracepoint.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/param.h>
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#include <unistd.h>
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#include <api/fs/tracing_path.h>
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int tp_event_has_id(const char *dir_path, struct dirent *evt_dir)
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{
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char evt_path[MAXPATHLEN];
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int fd;
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snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path, evt_dir->d_name);
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fd = open(evt_path, O_RDONLY);
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if (fd < 0)
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return -EINVAL;
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close(fd);
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return 0;
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}
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/*
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* Check whether event is in <debugfs_mount_point>/tracing/events
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*/
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int is_valid_tracepoint(const char *event_string)
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{
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DIR *sys_dir, *evt_dir;
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struct dirent *sys_dirent, *evt_dirent;
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char evt_path[MAXPATHLEN];
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char *dir_path;
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sys_dir = tracing_events__opendir();
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if (!sys_dir)
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return 0;
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for_each_subsystem(sys_dir, sys_dirent) {
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dir_path = get_events_file(sys_dirent->d_name);
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if (!dir_path)
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continue;
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evt_dir = opendir(dir_path);
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if (!evt_dir)
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goto next;
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for_each_event(dir_path, evt_dir, evt_dirent) {
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snprintf(evt_path, MAXPATHLEN, "%s:%s",
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sys_dirent->d_name, evt_dirent->d_name);
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if (!strcmp(evt_path, event_string)) {
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closedir(evt_dir);
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put_events_file(dir_path);
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closedir(sys_dir);
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return 1;
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}
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}
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closedir(evt_dir);
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next:
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put_events_file(dir_path);
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}
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closedir(sys_dir);
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return 0;
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}
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