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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 | |
6 | * as published by the Free Software Foundation; either version 2 | |
7 | * of the License, or (at your option) any later version. | |
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 <time.h> | |
27 | #include <unistd.h> | |
28 | ||
29 | #include "cmd.h" | |
beb8c75a | 30 | #include "conf.h" |
b082db07 | 31 | #include "utils.h" |
f3ed775e DG |
32 | |
33 | static char *opt_output_path; | |
34 | static char *opt_session_name; | |
35 | ||
36 | enum { | |
37 | OPT_HELP = 1, | |
38 | }; | |
39 | ||
40 | static struct poptOption long_options[] = { | |
41 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
42 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
43 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, 0, 0}, | |
44 | {0, 0, 0, 0, 0, 0, 0} | |
45 | }; | |
46 | ||
47 | /* | |
48 | * usage | |
49 | */ | |
50 | static void usage(FILE *ofp) | |
51 | { | |
52 | fprintf(ofp, "usage: lttng create [options] [NAME]\n"); | |
53 | fprintf(ofp, "\n"); | |
54 | fprintf(ofp, " -h, --help Show this help\n"); | |
55 | fprintf(ofp, " -o, --output PATH Specify output path\n"); | |
56 | fprintf(ofp, "\n"); | |
57 | } | |
58 | ||
59 | /* | |
60 | * create_session | |
61 | * | |
62 | * Create a tracing session. If no name specified, a default name will be | |
63 | * generated. | |
64 | */ | |
65 | static int create_session() | |
66 | { | |
67 | int ret; | |
68 | char name[NAME_MAX]; | |
69 | char *session_name, *path = NULL, *alloc_path; | |
70 | time_t rawtime; | |
71 | struct tm *timeinfo; | |
72 | ||
73 | /* Auto session name creation */ | |
74 | if (opt_session_name == NULL) { | |
75 | time(&rawtime); | |
76 | timeinfo = localtime(&rawtime); | |
77 | strftime(name, sizeof(name), "auto-%Y%m%d-%H%M%S", timeinfo); | |
78 | session_name = name; | |
79 | DBG("Auto session name set to %s", session_name); | |
80 | } else { | |
81 | session_name = opt_session_name; | |
82 | } | |
83 | ||
84 | /* Auto output path */ | |
85 | if (opt_output_path == NULL) { | |
86 | alloc_path = config_get_default_path(); | |
87 | if (alloc_path == NULL) { | |
b082db07 DG |
88 | ERR("Home path not found.\n \ |
89 | Please specify an output path using -o, --output PATH"); | |
f3ed775e DG |
90 | ret = CMD_FATAL; |
91 | goto error; | |
92 | } | |
93 | } else { | |
94 | alloc_path = opt_output_path; | |
95 | } | |
96 | ||
97 | path = config_generate_dir_path(alloc_path); | |
98 | if (path == NULL) { | |
99 | ret = CMD_FATAL; | |
100 | goto error; | |
101 | } | |
102 | ||
103 | /* Init lttng session config */ | |
104 | ret = config_init(path); | |
105 | if (ret < 0) { | |
106 | goto error; | |
107 | } | |
108 | ||
109 | ret = config_add_session_name(path, session_name); | |
110 | if (ret < 0) { | |
111 | goto error; | |
112 | } | |
113 | ||
114 | ret = lttng_create_session(session_name, path); | |
115 | if (ret < 0) { | |
116 | goto error; | |
117 | } | |
118 | ||
119 | MSG("Session %s created.", session_name); | |
b082db07 | 120 | MSG("Working directory of created session is %s/%s", path, session_name); |
f3ed775e DG |
121 | |
122 | ret = CMD_SUCCESS; | |
123 | ||
124 | error: | |
125 | if (alloc_path) { | |
126 | free(alloc_path); | |
127 | } | |
128 | ||
129 | if (path) { | |
130 | free(path); | |
131 | } | |
132 | return ret; | |
133 | } | |
134 | ||
135 | /* | |
136 | * cmd_list | |
137 | * | |
138 | * The 'list <options>' first level command | |
139 | */ | |
140 | int cmd_create(int argc, const char **argv) | |
141 | { | |
142 | int opt, ret = CMD_SUCCESS; | |
143 | static poptContext pc; | |
144 | ||
145 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
146 | poptReadDefaultConfig(pc, 0); | |
147 | ||
148 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
149 | switch (opt) { | |
150 | case OPT_HELP: | |
151 | usage(stderr); | |
152 | goto end; | |
153 | default: | |
154 | usage(stderr); | |
155 | ret = CMD_UNDEFINED; | |
156 | goto end; | |
157 | } | |
158 | } | |
159 | ||
160 | opt_session_name = (char*) poptGetArg(pc); | |
161 | ||
162 | ret = create_session(); | |
163 | ||
164 | end: | |
165 | return ret; | |
166 | } |