-/*
- * Copyright (C) 2009 Pierre-Marc Fournier
+/* Copyright (C) 2009 Pierre-Marc Fournier
*
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * 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 General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * 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
*/
#define _GNU_SOURCE
#include <sys/types.h>
+#include <sys/stat.h>
#include <sys/shm.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
+#include <getopt.h>
#include "ustd.h"
#include "localerr.h"
#define PUT_SUBBUF_DIED 0
#define PUT_SUBBUF_PUSHED 2
+char *sock_path=NULL;
+char *trace_path=NULL;
+
int test_sigpipe(void)
{
sigset_t sigset;
return NULL;
}
+int create_dir_if_needed(char *dir)
+{
+ int result;
+ result = mkdir(dir, 0777);
+ if(result == -1) {
+ if(errno != EEXIST) {
+ perror("mkdir");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int is_directory(const char *dir)
+{
+ int result;
+ struct stat st;
+
+ result = stat(dir, &st);
+ if(result == -1) {
+ PERROR("stat");
+ return 0;
+ }
+
+ if(!S_ISDIR(st.st_mode)) {
+ return 0;
+ }
+
+ return 1;
+}
+
int add_buffer(pid_t pid, char *bufname)
{
struct buffer_info *buf;
buf->memlen = shmds.shm_segsz;
/* open file for output */
- asprintf(&tmp, "/tmp/trace/%s_0", buf->name);
+ if(!trace_path) {
+ /* Only create the directory if using the default path, because
+ * of the risk of typo when using trace path override. We don't
+ * want to risk creating plenty of useless directories in that case.
+ */
+ result = create_dir_if_needed(USTD_DEFAULT_TRACE_PATH);
+ if(result == -1) {
+ ERR("could not create directory %s", USTD_DEFAULT_TRACE_PATH);
+ return -1;
+ }
+
+ trace_path = USTD_DEFAULT_TRACE_PATH;
+ }
+
+ asprintf(&tmp, "%s/%u", trace_path, buf->pid);
+ result = create_dir_if_needed(tmp);
+ if(result == -1) {
+ ERR("could not create directory %s", tmp);
+ free(tmp);
+ return -1;
+ }
+ free(tmp);
+
+ asprintf(&tmp, "%s/%u/%s_0", trace_path, buf->pid, buf->name);
result = fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 00600);
if(result == -1) {
PERROR("open");
return 0;
}
+void usage(void)
+{
+ fprintf(stderr, "Usage:\nustd OPTIONS\n\nOptions:\n"
+ "\t-h\t\tDisplay this usage.\n"
+ "\t-o DIR\t\tSpecify the directory where to output the traces.\n"
+ "\t-s PATH\t\tSpecify the path to use for the daemon socket.\n");
+}
+
+int parse_args(int argc, char **argv)
+{
+ int c;
+
+ while (1) {
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"help", 0, 0, 'h'},
+ {"version", 0, 0, 'V'},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long(argc, argv, "hs:o:", long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 0:
+ printf("option %s", long_options[option_index].name);
+ if (optarg)
+ printf(" with arg %s", optarg);
+ printf("\n");
+ break;
+ case 's':
+ sock_path = optarg;
+ break;
+ case 'o':
+ trace_path = optarg;
+ if(!is_directory(trace_path)) {
+ ERR("Not a valid directory. (%s)", trace_path);
+ return -1;
+ }
+ break;
+ case 'h':
+ usage();
+ exit(0);
+ case 'V':
+ printf("Version 0.0\n");
+ break;
+
+ default:
+ /* unknown option or other error; error is
+ printed by getopt, just return */
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
int main(int argc, char **argv)
{
struct ustcomm_ustd ustd;
int result;
sigset_t sigset;
- result = ustcomm_init_ustd(&ustd);
+ result = parse_args(argc, argv);
+ if(result == -1) {
+ exit(1);
+ }
+
+ result = ustcomm_init_ustd(&ustd, sock_path);
if(result == -1) {
ERR("failed to initialize socket");
return 1;
projects / lttng-ust.git / blobdiff