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f3ed775e DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
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. | |
f3ed775e DG |
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 | * | |
d14d33bf AM |
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. | |
f3ed775e DG |
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 DG |
28 | |
29 | static char *opt_session_name; | |
30 | ||
31 | enum { | |
32 | OPT_HELP = 1, | |
679b4943 | 33 | OPT_LIST_OPTIONS, |
f3ed775e DG |
34 | }; |
35 | ||
36 | static struct poptOption long_options[] = { | |
37 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
38 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
679b4943 | 39 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
f3ed775e DG |
40 | {0, 0, 0, 0, 0, 0, 0} |
41 | }; | |
42 | ||
43 | /* | |
44 | * usage | |
45 | */ | |
46 | static void usage(FILE *ofp) | |
47 | { | |
48 | fprintf(ofp, "usage: lttng destroy [options] [NAME]\n"); | |
49 | fprintf(ofp, "\n"); | |
50 | fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n"); | |
51 | fprintf(ofp, "get it from the configuration directory (.lttng).\n"); | |
52 | fprintf(ofp, "\n"); | |
53 | fprintf(ofp, " -h, --help Show this help\n"); | |
27221701 | 54 | fprintf(ofp, " --list-options Simple listing of options\n"); |
f3ed775e DG |
55 | fprintf(ofp, "\n"); |
56 | } | |
57 | ||
58 | /* | |
843f5df9 DG |
59 | * Destroy a session removing the config directory and unregistering to the |
60 | * session daemon. | |
f3ed775e DG |
61 | */ |
62 | static int destroy_session() | |
63 | { | |
64 | int ret; | |
65 | char *session_name, *path; | |
66 | ||
67 | if (opt_session_name == NULL) { | |
68 | session_name = get_session_name(); | |
69 | if (session_name == NULL) { | |
70 | ret = CMD_ERROR; | |
71 | goto error; | |
72 | } | |
73 | } else { | |
74 | session_name = opt_session_name; | |
75 | } | |
76 | ||
843f5df9 | 77 | ret = lttng_destroy_session(session_name); |
f3ed775e | 78 | if (ret < 0) { |
ae856491 | 79 | /* Don't set ret so lttng can interpret the sessiond error. */ |
f3ed775e DG |
80 | goto free_name; |
81 | } | |
82 | ||
58a97671 | 83 | path = config_get_default_path(); |
f3ed775e DG |
84 | if (path == NULL) { |
85 | ret = CMD_FATAL; | |
86 | goto free_name; | |
87 | } | |
88 | ||
89 | if (opt_session_name == NULL) { | |
90 | config_destroy(path); | |
91 | MSG("Session %s destroyed at %s", session_name, path); | |
92 | } else { | |
93 | MSG("Session %s destroyed", session_name); | |
94 | } | |
95 | ||
f3ed775e DG |
96 | ret = CMD_SUCCESS; |
97 | ||
98 | free_name: | |
b73d0b29 MD |
99 | if (opt_session_name == NULL) { |
100 | free(session_name); | |
101 | } | |
f3ed775e DG |
102 | error: |
103 | return ret; | |
104 | } | |
105 | ||
106 | /* | |
843f5df9 | 107 | * The 'destroy <options>' first level command |
f3ed775e DG |
108 | */ |
109 | int cmd_destroy(int argc, const char **argv) | |
110 | { | |
111 | int opt, ret = CMD_SUCCESS; | |
112 | static poptContext pc; | |
113 | ||
114 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
115 | poptReadDefaultConfig(pc, 0); | |
116 | ||
117 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
118 | switch (opt) { | |
119 | case OPT_HELP: | |
ca1c3607 | 120 | usage(stdout); |
f3ed775e | 121 | goto end; |
679b4943 SM |
122 | case OPT_LIST_OPTIONS: |
123 | list_cmd_options(stdout, long_options); | |
679b4943 | 124 | goto end; |
f3ed775e DG |
125 | default: |
126 | usage(stderr); | |
127 | ret = CMD_UNDEFINED; | |
128 | goto end; | |
129 | } | |
130 | } | |
131 | ||
132 | opt_session_name = (char*) poptGetArg(pc); | |
133 | ||
134 | ret = destroy_session(); | |
135 | ||
136 | end: | |
ca1c3607 | 137 | poptFreeContext(pc); |
f3ed775e DG |
138 | return ret; |
139 | } |