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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
82a3637f DG |
6 | * as published by the Free Software Foundation; only version 2 |
7 | * of the License. | |
f3ed775e DG |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #define _GNU_SOURCE | |
20 | #include <popt.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
27 | ||
6e2d116c DG |
28 | #include "../cmd.h" |
29 | #include "../conf.h" | |
30 | #include "../utils.h" | |
f3ed775e DG |
31 | |
32 | static char *opt_session_name; | |
cd80958d | 33 | static struct lttng_handle *handle; |
f3ed775e DG |
34 | |
35 | enum { | |
36 | OPT_HELP = 1, | |
37 | }; | |
38 | ||
39 | static struct poptOption long_options[] = { | |
40 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
41 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
42 | {0, 0, 0, 0, 0, 0, 0} | |
43 | }; | |
44 | ||
45 | /* | |
46 | * usage | |
47 | */ | |
48 | static void usage(FILE *ofp) | |
49 | { | |
50 | fprintf(ofp, "usage: lttng destroy [options] [NAME]\n"); | |
51 | fprintf(ofp, "\n"); | |
52 | fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n"); | |
53 | fprintf(ofp, "get it from the configuration directory (.lttng).\n"); | |
54 | fprintf(ofp, "\n"); | |
55 | fprintf(ofp, " -h, --help Show this help\n"); | |
56 | fprintf(ofp, "\n"); | |
57 | } | |
58 | ||
59 | /* | |
60 | * destroy_session | |
61 | * | |
62 | * Destroy a session removing the config directory and unregistering to the | |
63 | * session daemon. | |
64 | */ | |
65 | static int destroy_session() | |
66 | { | |
67 | int ret; | |
68 | char *session_name, *path; | |
69 | ||
70 | if (opt_session_name == NULL) { | |
71 | session_name = get_session_name(); | |
72 | if (session_name == NULL) { | |
73 | ret = CMD_ERROR; | |
74 | goto error; | |
75 | } | |
76 | } else { | |
77 | session_name = opt_session_name; | |
78 | } | |
79 | ||
cd80958d DG |
80 | handle = lttng_create_handle(session_name, NULL); |
81 | if (handle == NULL) { | |
82 | ret = -1; | |
83 | goto error; | |
84 | } | |
85 | ||
86 | ret = lttng_destroy_session(handle); | |
f3ed775e DG |
87 | if (ret < 0) { |
88 | goto free_name; | |
89 | } | |
90 | ||
58a97671 | 91 | path = config_get_default_path(); |
f3ed775e DG |
92 | if (path == NULL) { |
93 | ret = CMD_FATAL; | |
94 | goto free_name; | |
95 | } | |
96 | ||
97 | if (opt_session_name == NULL) { | |
98 | config_destroy(path); | |
99 | MSG("Session %s destroyed at %s", session_name, path); | |
100 | } else { | |
101 | MSG("Session %s destroyed", session_name); | |
102 | } | |
103 | ||
f3ed775e DG |
104 | ret = CMD_SUCCESS; |
105 | ||
106 | free_name: | |
b73d0b29 MD |
107 | if (opt_session_name == NULL) { |
108 | free(session_name); | |
109 | } | |
f3ed775e | 110 | error: |
cd80958d DG |
111 | lttng_destroy_handle(handle); |
112 | ||
f3ed775e DG |
113 | return ret; |
114 | } | |
115 | ||
116 | /* | |
117 | * cmd_destroy | |
118 | * | |
119 | * The 'destroy <options>' first level command | |
120 | */ | |
121 | int cmd_destroy(int argc, const char **argv) | |
122 | { | |
123 | int opt, ret = CMD_SUCCESS; | |
124 | static poptContext pc; | |
125 | ||
126 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
127 | poptReadDefaultConfig(pc, 0); | |
128 | ||
129 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
130 | switch (opt) { | |
131 | case OPT_HELP: | |
132 | usage(stderr); | |
133 | goto end; | |
134 | default: | |
135 | usage(stderr); | |
136 | ret = CMD_UNDEFINED; | |
137 | goto end; | |
138 | } | |
139 | } | |
140 | ||
141 | opt_session_name = (char*) poptGetArg(pc); | |
142 | ||
143 | ret = destroy_session(); | |
144 | ||
145 | end: | |
146 | return ret; | |
147 | } |