2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
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.
15 #include <sys/types.h>
25 #include <libubox/utils.h>
26 #include <libubox/list.h>
28 #include "utils/utils.h"
44 void (*cb
) (struct init_action
*a
);
49 struct list_head list
;
55 struct init_handler
*handler
;
56 struct uloop_process proc
;
59 struct uloop_timeout tout
;
62 static const char *tab
= "/etc/inittab";
63 static char *ask
= "/sbin/askfirst";
65 static LIST_HEAD(actions
);
67 static int dev_open(const char *dev
)
73 fd
= open( dev
, O_RDWR
);
80 static int dev_exist(const char *dev
)
92 static void fork_worker(struct init_action
*a
)
100 fd
= dev_open(a
->id
);
103 dup2(fd
, STDIN_FILENO
);
104 dup2(fd
, STDOUT_FILENO
);
105 dup2(fd
, STDERR_FILENO
);
109 execvp(a
->argv
[0], a
->argv
);
110 ERROR("Failed to execute %s\n", a
->argv
[0]);
114 if (a
->proc
.pid
> 0) {
115 DEBUG(4, "Launched new %s action, pid=%d\n",
118 uloop_process_add(&a
->proc
);
122 static void child_exit(struct uloop_process
*proc
, int ret
)
124 struct init_action
*a
= container_of(proc
, struct init_action
, proc
);
126 DEBUG(4, "pid:%d\n", proc
->pid
);
127 uloop_timeout_set(&a
->tout
, a
->respawn
);
130 static void respawn(struct uloop_timeout
*tout
)
132 struct init_action
*a
= container_of(tout
, struct init_action
, tout
);
136 static void rcdone(struct runqueue
*q
)
141 static void runrc(struct init_action
*a
)
143 if (!a
->argv
[1] || !a
->argv
[2]) {
144 ERROR("valid format is rcS <S|K> <param>\n");
147 rcS(a
->argv
[1], a
->argv
[2], rcdone
);
150 static void askfirst(struct init_action
*a
)
154 if (!dev_exist(a
->id
) || (console
&& !strcmp(console
, a
->id
))) {
155 DEBUG(4, "Skipping %s\n", a
->id
);
159 a
->tout
.cb
= respawn
;
160 for (i
= MAX_ARGS
- 1; i
>= 1; i
--)
161 a
->argv
[i
] = a
->argv
[i
- 1];
165 a
->proc
.cb
= child_exit
;
169 static void askconsole(struct init_action
*a
)
171 char line
[256], *tty
, *split
;
174 tty
= get_cmdline_val("console", line
, sizeof(line
));
176 split
= strchr(tty
, ',');
180 if (!dev_exist(tty
)) {
181 DEBUG(4, "skipping %s\n", tty
);
185 console
= strdup(tty
);
193 a
->tout
.cb
= respawn
;
194 for (i
= MAX_ARGS
- 1; i
>= 1; i
--)
195 a
->argv
[i
] = a
->argv
[i
- 1];
199 a
->proc
.cb
= child_exit
;
203 static void rcrespawn(struct init_action
*a
)
205 a
->tout
.cb
= respawn
;
208 a
->proc
.cb
= child_exit
;
212 static struct init_handler handlers
[] = {
224 .name
= "askconsole",
234 static int add_action(struct init_action
*a
, const char *name
)
238 for (i
= 0; i
< ARRAY_SIZE(handlers
); i
++)
239 if (!strcmp(handlers
[i
].name
, name
)) {
240 a
->handler
= &handlers
[i
];
241 list_add_tail(&a
->list
, &actions
);
244 ERROR("Unknown init handler %s\n", name
);
248 void procd_inittab_run(const char *handler
)
250 struct init_action
*a
;
252 list_for_each_entry(a
, &actions
, list
)
253 if (!strcmp(a
->handler
->name
, handler
)) {
254 if (a
->handler
->multi
) {
263 void procd_inittab(void)
266 FILE *fp
= fopen(tab
, "r");
267 struct init_action
*a
;
269 regmatch_t matches
[5];
273 ERROR("Failed to open %s\n", tab
);
277 regcomp(&pat_inittab
, "([a-zA-Z0-9]*):([a-zA-Z0-9]*):([a-zA-Z0-9]*):(.*)", REG_EXTENDED
);
278 line
= malloc(LINE_LEN
);
279 a
= malloc(sizeof(struct init_action
));
280 memset(a
, 0, sizeof(struct init_action
));
282 while (fgets(line
, LINE_LEN
, fp
)) {
283 char *tags
[TAG_PROCESS
+ 1];
286 int len
= strlen(line
);
288 while (isspace(line
[len
- 1]))
295 if (regexec(&pat_inittab
, line
, 5, matches
, 0))
298 DEBUG(4, "Parsing inittab - %s", line
);
300 for (i
= TAG_ID
; i
<= TAG_PROCESS
; i
++) {
301 line
[matches
[i
].rm_eo
] = '\0';
302 tags
[i
] = &line
[matches
[i
+ 1].rm_so
];
305 tok
= strtok(tags
[TAG_PROCESS
], " ");
306 for (i
= 0; i
< (MAX_ARGS
- 1) && tok
; i
++) {
308 tok
= strtok(NULL
, " ");
311 a
->id
= tags
[TAG_ID
];
314 if (add_action(a
, tags
[TAG_ACTION
]))
316 line
= malloc(LINE_LEN
);
317 a
= malloc(sizeof(struct init_action
));
318 memset(a
, 0, sizeof(struct init_action
));
324 regfree(&pat_inittab
);