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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" |
f3ed775e DG |
31 | |
32 | static char *opt_output_path; | |
33 | static char *opt_session_name; | |
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 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, 0, 0}, | |
43 | {0, 0, 0, 0, 0, 0, 0} | |
44 | }; | |
45 | ||
46 | /* | |
47 | * usage | |
48 | */ | |
49 | static void usage(FILE *ofp) | |
50 | { | |
51 | fprintf(ofp, "usage: lttng create [options] [NAME]\n"); | |
52 | fprintf(ofp, "\n"); | |
53 | fprintf(ofp, " -h, --help Show this help\n"); | |
54 | fprintf(ofp, " -o, --output PATH Specify output path\n"); | |
55 | fprintf(ofp, "\n"); | |
56 | } | |
57 | ||
58 | /* | |
59 | * create_session | |
60 | * | |
61 | * Create a tracing session. If no name specified, a default name will be | |
62 | * generated. | |
63 | */ | |
64 | static int create_session() | |
65 | { | |
66 | int ret; | |
67 | char name[NAME_MAX]; | |
68 | char *session_name, *path = NULL, *alloc_path; | |
69 | time_t rawtime; | |
70 | struct tm *timeinfo; | |
71 | ||
72 | /* Auto session name creation */ | |
73 | if (opt_session_name == NULL) { | |
74 | time(&rawtime); | |
75 | timeinfo = localtime(&rawtime); | |
76 | strftime(name, sizeof(name), "auto-%Y%m%d-%H%M%S", timeinfo); | |
77 | session_name = name; | |
78 | DBG("Auto session name set to %s", session_name); | |
79 | } else { | |
80 | session_name = opt_session_name; | |
81 | } | |
82 | ||
83 | /* Auto output path */ | |
84 | if (opt_output_path == NULL) { | |
85 | alloc_path = config_get_default_path(); | |
86 | if (alloc_path == NULL) { | |
87 | ret = CMD_FATAL; | |
88 | goto error; | |
89 | } | |
90 | } else { | |
91 | alloc_path = opt_output_path; | |
92 | } | |
93 | ||
94 | path = config_generate_dir_path(alloc_path); | |
95 | if (path == NULL) { | |
96 | ret = CMD_FATAL; | |
97 | goto error; | |
98 | } | |
99 | ||
100 | /* Init lttng session config */ | |
101 | ret = config_init(path); | |
102 | if (ret < 0) { | |
103 | goto error; | |
104 | } | |
105 | ||
106 | ret = config_add_session_name(path, session_name); | |
107 | if (ret < 0) { | |
108 | goto error; | |
109 | } | |
110 | ||
111 | ret = lttng_create_session(session_name, path); | |
112 | if (ret < 0) { | |
113 | goto error; | |
114 | } | |
115 | ||
116 | MSG("Session %s created.", session_name); | |
117 | MSG("Working directory of created session is %s", path); | |
118 | ||
119 | ret = CMD_SUCCESS; | |
120 | ||
121 | error: | |
122 | if (alloc_path) { | |
123 | free(alloc_path); | |
124 | } | |
125 | ||
126 | if (path) { | |
127 | free(path); | |
128 | } | |
129 | return ret; | |
130 | } | |
131 | ||
132 | /* | |
133 | * cmd_list | |
134 | * | |
135 | * The 'list <options>' first level command | |
136 | */ | |
137 | int cmd_create(int argc, const char **argv) | |
138 | { | |
139 | int opt, ret = CMD_SUCCESS; | |
140 | static poptContext pc; | |
141 | ||
142 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
143 | poptReadDefaultConfig(pc, 0); | |
144 | ||
145 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
146 | switch (opt) { | |
147 | case OPT_HELP: | |
148 | usage(stderr); | |
149 | goto end; | |
150 | default: | |
151 | usage(stderr); | |
152 | ret = CMD_UNDEFINED; | |
153 | goto end; | |
154 | } | |
155 | } | |
156 | ||
157 | opt_session_name = (char*) poptGetArg(pc); | |
158 | ||
159 | ret = create_session(); | |
160 | ||
161 | end: | |
162 | return ret; | |
163 | } |