Fix: 32-bit print format type mismatch warnings
[lttng-tools.git] / src / bin / lttng / commands / destroy.c
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
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4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
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7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
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13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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16 */
17
18#define _GNU_SOURCE
19#include <popt.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25#include <unistd.h>
26
c399183f 27#include "../command.h"
f3ed775e 28
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29#include <common/sessiond-comm/sessiond-comm.h>
30
b09ee5ba 31static int opt_destroy_all;
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32
33enum {
34 OPT_HELP = 1,
679b4943 35 OPT_LIST_OPTIONS,
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36};
37
38static struct poptOption long_options[] = {
39 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
40 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
b09ee5ba 41 {"all", 'a', POPT_ARG_VAL, &opt_destroy_all, 1, 0, 0},
679b4943 42 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
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43 {0, 0, 0, 0, 0, 0, 0}
44};
45
46/*
47 * usage
48 */
49static void usage(FILE *ofp)
50{
51 fprintf(ofp, "usage: lttng destroy [options] [NAME]\n");
52 fprintf(ofp, "\n");
53 fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n");
54 fprintf(ofp, "get it from the configuration directory (.lttng).\n");
55 fprintf(ofp, "\n");
56 fprintf(ofp, " -h, --help Show this help\n");
b09ee5ba 57 fprintf(ofp, " -a, --all Destroy all sessions\n");
27221701 58 fprintf(ofp, " --list-options Simple listing of options\n");
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59 fprintf(ofp, "\n");
60}
61
62/*
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FG
63 * destroy_session
64 *
65 * Unregister the provided session to the session daemon. On success, removes
66 * the default configuration.
f3ed775e 67 */
b09ee5ba 68static int destroy_session(const char *session_name)
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69{
70 int ret;
f3ed775e 71
843f5df9 72 ret = lttng_destroy_session(session_name);
f3ed775e 73 if (ret < 0) {
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74 switch (-ret) {
75 case LTTCOMM_SESS_NOT_FOUND:
76 WARN("Session name %s not found", session_name);
77 break;
78 default:
79 break;
80 }
b09ee5ba 81 goto error;
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82 }
83
b09ee5ba
FG
84 MSG("Session %s destroyed", session_name);
85 config_destroy_default();
f3ed775e 86 ret = CMD_SUCCESS;
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FG
87error:
88 return ret;
89}
f3ed775e 90
b09ee5ba
FG
91/*
92 * destroy_all_sessions
93 *
94 * Call destroy_sessions for each registered sessions
95 */
96static int destroy_all_sessions()
97{
98 int count, i, ret = CMD_SUCCESS;
99 struct lttng_session *sessions;
100
101 count = lttng_list_sessions(&sessions);
102 if (count == 0) {
103 MSG("No session found, nothing to do.");
104 }
105 for (i = 0; i < count; i++) {
106 ret = destroy_session(sessions[i].name);
107 if (ret < 0) {
108 goto error;
109 }
b73d0b29 110 }
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111error:
112 return ret;
113}
114
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115/*
116 * get_default_session_name
117 *
118 * Returns the default sessions name, if any
119 */
120static int get_default_session_name(char **name)
121{
122 char *session_name = get_session_name();
123 if (session_name == NULL) {
124 return CMD_ERROR;
125 }
126 *name = session_name;
127 return CMD_SUCCESS;
128}
129
f3ed775e 130/*
843f5df9 131 * The 'destroy <options>' first level command
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132 */
133int cmd_destroy(int argc, const char **argv)
134{
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135 int opt;
136 int ret = CMD_SUCCESS;
f3ed775e 137 static poptContext pc;
b09ee5ba 138 char *session_name = NULL;
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139
140 pc = poptGetContext(NULL, argc, argv, long_options, 0);
141 poptReadDefaultConfig(pc, 0);
142
143 while ((opt = poptGetNextOpt(pc)) != -1) {
144 switch (opt) {
145 case OPT_HELP:
ca1c3607 146 usage(stdout);
b09ee5ba 147 break;
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148 case OPT_LIST_OPTIONS:
149 list_cmd_options(stdout, long_options);
b09ee5ba 150 break;
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151 default:
152 usage(stderr);
153 ret = CMD_UNDEFINED;
b09ee5ba 154 break;
f3ed775e 155 }
b09ee5ba 156 goto end;
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157 }
158
b09ee5ba 159 session_name = (char *) poptGetArg(pc);
f3ed775e 160
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161 /*
162 * ignore session name in case all
163 * sessions are to be destroyed
164 */
165 if (opt_destroy_all) {
166 ret = destroy_all_sessions();
167 goto end;
168 }
169 if (session_name == NULL) {
170 ret = get_default_session_name(&session_name);
171 if (ret < 0 || session_name == NULL) {
172 goto end;
173 }
174 }
175 ret = destroy_session(session_name);
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176
177end:
ca1c3607 178 poptFreeContext(pc);
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179 if (session_name != NULL) {
180 free(session_name);
181 }
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182 return ret;
183}
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