init: Split parser into generic parser and init parser
Change-Id: I451ebc4ff12f2ac660eb533fa10ad561fa25c9dd
diff --git a/init/Android.mk b/init/Android.mk
index 3233883..ecf1bf4 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -12,7 +12,8 @@
parser.c \
logo.c \
keychords.c \
- signal_handler.c
+ signal_handler.c \
+ init_parser.c
ifeq ($(strip $(INIT_BOOTCHART)),true)
LOCAL_SRC_FILES += bootchart.c
diff --git a/init/builtins.c b/init/builtins.c
index 00eab83..d87d5e4 100644
--- a/init/builtins.c
+++ b/init/builtins.c
@@ -35,7 +35,7 @@
#include "keywords.h"
#include "property_service.h"
#include "devices.h"
-#include "parser.h"
+#include "init_parser.h"
#include "util.h"
#include "log.h"
@@ -221,7 +221,7 @@
int do_import(int nargs, char **args)
{
- return parse_config_file(args[1]);
+ return init_parse_config_file(args[1]);
}
int do_mkdir(int nargs, char **args)
diff --git a/init/init.c b/init/init.c
index 3471cf8..50f8f45 100755
--- a/init/init.c
+++ b/init/init.c
@@ -46,7 +46,7 @@
#include "bootchart.h"
#include "signal_handler.h"
#include "keychords.h"
-#include "parser.h"
+#include "init_parser.h"
#include "util.h"
static int property_triggers_enabled = 0;
@@ -253,7 +253,7 @@
ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno));
}
} else {
- char *arg_ptrs[SVC_MAXARGS+1];
+ char *arg_ptrs[INIT_PARSER_MAXARGS+1];
int arg_idx = svc->nargs;
char *tmp = strdup(dynamic_args);
char *next = tmp;
@@ -264,7 +264,7 @@
while((bword = strsep(&next, " "))) {
arg_ptrs[arg_idx++] = bword;
- if (arg_idx == SVC_MAXARGS)
+ if (arg_idx == INIT_PARSER_MAXARGS)
break;
}
arg_ptrs[arg_idx] = '\0';
@@ -748,7 +748,7 @@
log_init();
INFO("reading config file\n");
- parse_config_file("/init.rc");
+ init_parse_config_file("/init.rc");
/* pull the kernel commandline and ramdisk properties file in */
qemu_init();
@@ -756,7 +756,7 @@
get_hardware_name();
snprintf(tmp, sizeof(tmp), "/init.%s.rc", hardware);
- parse_config_file(tmp);
+ init_parse_config_file(tmp);
action_for_each_trigger("early-init", action_add_queue_tail);
diff --git a/init/init.h b/init/init.h
index 59d72c0..8691335 100644
--- a/init/init.h
+++ b/init/init.h
@@ -19,6 +19,8 @@
#include "list.h"
+#include <sys/stat.h>
+
void handle_control_message(const char *msg, const char *arg);
struct command
@@ -70,8 +72,6 @@
#define NR_SVC_SUPP_GIDS 12 /* twelve supplementary groups */
-#define SVC_MAXARGS 64
-
#define COMMAND_RETRY_TIMEOUT 5
struct service {
@@ -110,8 +110,6 @@
char *args[1];
}; /* ^-------'args' MUST be at the end of this struct! */
-int parse_config_file(const char *fn);
-
void notify_service_state(const char *name, const char *state);
struct service *service_find_by_name(const char *name);
diff --git a/init/init_parser.c b/init/init_parser.c
new file mode 100644
index 0000000..585a5b5
--- /dev/null
+++ b/init/init_parser.c
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stddef.h>
+#include <ctype.h>
+
+#include "init.h"
+#include "parser.h"
+#include "init_parser.h"
+#include "log.h"
+#include "list.h"
+#include "property_service.h"
+#include "util.h"
+
+#include <cutils/iosched_policy.h>
+
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+
+static list_declare(service_list);
+static list_declare(action_list);
+static list_declare(action_queue);
+
+static void *parse_service(struct parse_state *state, int nargs, char **args);
+static void parse_line_service(struct parse_state *state, int nargs, char **args);
+
+static void *parse_action(struct parse_state *state, int nargs, char **args);
+static void parse_line_action(struct parse_state *state, int nargs, char **args);
+
+#define SECTION 0x01
+#define COMMAND 0x02
+#define OPTION 0x04
+
+#include "keywords.h"
+
+#define KEYWORD(symbol, flags, nargs, func) \
+ [ K_##symbol ] = { #symbol, func, nargs + 1, flags, },
+
+struct {
+ const char *name;
+ int (*func)(int nargs, char **args);
+ unsigned char nargs;
+ unsigned char flags;
+} keyword_info[KEYWORD_COUNT] = {
+ [ K_UNKNOWN ] = { "unknown", 0, 0, 0 },
+#include "keywords.h"
+};
+#undef KEYWORD
+
+#define kw_is(kw, type) (keyword_info[kw].flags & (type))
+#define kw_name(kw) (keyword_info[kw].name)
+#define kw_func(kw) (keyword_info[kw].func)
+#define kw_nargs(kw) (keyword_info[kw].nargs)
+
+int lookup_keyword(const char *s)
+{
+ switch (*s++) {
+ case 'c':
+ if (!strcmp(s, "opy")) return K_copy;
+ if (!strcmp(s, "apability")) return K_capability;
+ if (!strcmp(s, "hdir")) return K_chdir;
+ if (!strcmp(s, "hroot")) return K_chroot;
+ if (!strcmp(s, "lass")) return K_class;
+ if (!strcmp(s, "lass_start")) return K_class_start;
+ if (!strcmp(s, "lass_stop")) return K_class_stop;
+ if (!strcmp(s, "onsole")) return K_console;
+ if (!strcmp(s, "hown")) return K_chown;
+ if (!strcmp(s, "hmod")) return K_chmod;
+ if (!strcmp(s, "ritical")) return K_critical;
+ break;
+ case 'd':
+ if (!strcmp(s, "isabled")) return K_disabled;
+ if (!strcmp(s, "omainname")) return K_domainname;
+ break;
+ case 'e':
+ if (!strcmp(s, "xec")) return K_exec;
+ if (!strcmp(s, "xport")) return K_export;
+ break;
+ case 'g':
+ if (!strcmp(s, "roup")) return K_group;
+ break;
+ case 'h':
+ if (!strcmp(s, "ostname")) return K_hostname;
+ break;
+ case 'i':
+ if (!strcmp(s, "oprio")) return K_ioprio;
+ if (!strcmp(s, "fup")) return K_ifup;
+ if (!strcmp(s, "nsmod")) return K_insmod;
+ if (!strcmp(s, "mport")) return K_import;
+ break;
+ case 'k':
+ if (!strcmp(s, "eycodes")) return K_keycodes;
+ break;
+ case 'l':
+ if (!strcmp(s, "oglevel")) return K_loglevel;
+ break;
+ case 'm':
+ if (!strcmp(s, "kdir")) return K_mkdir;
+ if (!strcmp(s, "ount")) return K_mount;
+ break;
+ case 'o':
+ if (!strcmp(s, "n")) return K_on;
+ if (!strcmp(s, "neshot")) return K_oneshot;
+ if (!strcmp(s, "nrestart")) return K_onrestart;
+ break;
+ case 'r':
+ if (!strcmp(s, "estart")) return K_restart;
+ break;
+ case 's':
+ if (!strcmp(s, "ervice")) return K_service;
+ if (!strcmp(s, "etenv")) return K_setenv;
+ if (!strcmp(s, "etkey")) return K_setkey;
+ if (!strcmp(s, "etprop")) return K_setprop;
+ if (!strcmp(s, "etrlimit")) return K_setrlimit;
+ if (!strcmp(s, "ocket")) return K_socket;
+ if (!strcmp(s, "tart")) return K_start;
+ if (!strcmp(s, "top")) return K_stop;
+ if (!strcmp(s, "ymlink")) return K_symlink;
+ if (!strcmp(s, "ysclktz")) return K_sysclktz;
+ break;
+ case 't':
+ if (!strcmp(s, "rigger")) return K_trigger;
+ break;
+ case 'u':
+ if (!strcmp(s, "ser")) return K_user;
+ break;
+ case 'w':
+ if (!strcmp(s, "rite")) return K_write;
+ if (!strcmp(s, "ait")) return K_wait;
+ break;
+ }
+ return K_UNKNOWN;
+}
+
+void parse_line_no_op(struct parse_state *state, int nargs, char **args)
+{
+}
+
+void parse_new_section(struct parse_state *state, int kw,
+ int nargs, char **args)
+{
+ printf("[ %s %s ]\n", args[0],
+ nargs > 1 ? args[1] : "");
+ switch(kw) {
+ case K_service:
+ state->context = parse_service(state, nargs, args);
+ if (state->context) {
+ state->parse_line = parse_line_service;
+ return;
+ }
+ break;
+ case K_on:
+ state->context = parse_action(state, nargs, args);
+ if (state->context) {
+ state->parse_line = parse_line_action;
+ return;
+ }
+ break;
+ }
+ state->parse_line = parse_line_no_op;
+}
+
+static void parse_config(const char *fn, char *s)
+{
+ struct parse_state state;
+ char *args[INIT_PARSER_MAXARGS];
+ int nargs;
+
+ nargs = 0;
+ state.filename = fn;
+ state.line = 1;
+ state.ptr = s;
+ state.nexttoken = 0;
+ state.parse_line = parse_line_no_op;
+ for (;;) {
+ switch (next_token(&state)) {
+ case T_EOF:
+ state.parse_line(&state, 0, 0);
+ return;
+ case T_NEWLINE:
+ if (nargs) {
+ int kw = lookup_keyword(args[0]);
+ if (kw_is(kw, SECTION)) {
+ state.parse_line(&state, 0, 0);
+ parse_new_section(&state, kw, nargs, args);
+ } else {
+ state.parse_line(&state, nargs, args);
+ }
+ nargs = 0;
+ }
+ break;
+ case T_TEXT:
+ if (nargs < INIT_PARSER_MAXARGS) {
+ args[nargs++] = state.text;
+ }
+ break;
+ }
+ }
+}
+
+int init_parse_config_file(const char *fn)
+{
+ char *data;
+ data = read_file(fn, 0);
+ if (!data) return -1;
+
+ parse_config(fn, data);
+ DUMP();
+ return 0;
+}
+
+static int valid_name(const char *name)
+{
+ if (strlen(name) > 16) {
+ return 0;
+ }
+ while (*name) {
+ if (!isalnum(*name) && (*name != '_') && (*name != '-')) {
+ return 0;
+ }
+ name++;
+ }
+ return 1;
+}
+
+struct service *service_find_by_name(const char *name)
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ if (!strcmp(svc->name, name)) {
+ return svc;
+ }
+ }
+ return 0;
+}
+
+struct service *service_find_by_pid(pid_t pid)
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ if (svc->pid == pid) {
+ return svc;
+ }
+ }
+ return 0;
+}
+
+struct service *service_find_by_keychord(int keychord_id)
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ if (svc->keychord_id == keychord_id) {
+ return svc;
+ }
+ }
+ return 0;
+}
+
+void service_for_each(void (*func)(struct service *svc))
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ func(svc);
+ }
+}
+
+void service_for_each_class(const char *classname,
+ void (*func)(struct service *svc))
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ if (!strcmp(svc->classname, classname)) {
+ func(svc);
+ }
+ }
+}
+
+void service_for_each_flags(unsigned matchflags,
+ void (*func)(struct service *svc))
+{
+ struct listnode *node;
+ struct service *svc;
+ list_for_each(node, &service_list) {
+ svc = node_to_item(node, struct service, slist);
+ if (svc->flags & matchflags) {
+ func(svc);
+ }
+ }
+}
+
+void action_for_each_trigger(const char *trigger,
+ void (*func)(struct action *act))
+{
+ struct listnode *node;
+ struct action *act;
+ list_for_each(node, &action_list) {
+ act = node_to_item(node, struct action, alist);
+ if (!strcmp(act->name, trigger)) {
+ func(act);
+ }
+ }
+}
+
+void queue_property_triggers(const char *name, const char *value)
+{
+ struct listnode *node;
+ struct action *act;
+ list_for_each(node, &action_list) {
+ act = node_to_item(node, struct action, alist);
+ if (!strncmp(act->name, "property:", strlen("property:"))) {
+ const char *test = act->name + strlen("property:");
+ int name_length = strlen(name);
+
+ if (!strncmp(name, test, name_length) &&
+ test[name_length] == '=' &&
+ !strcmp(test + name_length + 1, value)) {
+ action_add_queue_tail(act);
+ }
+ }
+ }
+}
+
+void queue_all_property_triggers()
+{
+ struct listnode *node;
+ struct action *act;
+ list_for_each(node, &action_list) {
+ act = node_to_item(node, struct action, alist);
+ if (!strncmp(act->name, "property:", strlen("property:"))) {
+ /* parse property name and value
+ syntax is property:<name>=<value> */
+ const char* name = act->name + strlen("property:");
+ const char* equals = strchr(name, '=');
+ if (equals) {
+ char prop_name[PROP_NAME_MAX + 1];
+ const char* value;
+ int length = equals - name;
+ if (length > PROP_NAME_MAX) {
+ ERROR("property name too long in trigger %s", act->name);
+ } else {
+ memcpy(prop_name, name, length);
+ prop_name[length] = 0;
+
+ /* does the property exist, and match the trigger value? */
+ value = property_get(prop_name);
+ if (value && !strcmp(equals + 1, value)) {
+ action_add_queue_tail(act);
+ }
+ }
+ }
+ }
+ }
+}
+
+void queue_builtin_action(int (*func)(int nargs, char **args), char *name)
+{
+ struct action *act;
+ struct command *cmd;
+
+ act = calloc(1, sizeof(*act));
+ act->name = name;
+ list_init(&act->commands);
+
+ cmd = calloc(1, sizeof(*cmd));
+ cmd->func = func;
+ cmd->args[0] = name;
+ list_add_tail(&act->commands, &cmd->clist);
+
+ list_add_tail(&action_list, &act->alist);
+ action_add_queue_tail(act);
+}
+
+void action_add_queue_tail(struct action *act)
+{
+ list_add_tail(&action_queue, &act->qlist);
+}
+
+struct action *action_remove_queue_head(void)
+{
+ if (list_empty(&action_queue)) {
+ return 0;
+ } else {
+ struct listnode *node = list_head(&action_queue);
+ struct action *act = node_to_item(node, struct action, qlist);
+ list_remove(node);
+ return act;
+ }
+}
+
+int action_queue_empty()
+{
+ return list_empty(&action_queue);
+}
+
+static void *parse_service(struct parse_state *state, int nargs, char **args)
+{
+ struct service *svc;
+ if (nargs < 3) {
+ parse_error(state, "services must have a name and a program\n");
+ return 0;
+ }
+ if (!valid_name(args[1])) {
+ parse_error(state, "invalid service name '%s'\n", args[1]);
+ return 0;
+ }
+
+ svc = service_find_by_name(args[1]);
+ if (svc) {
+ parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]);
+ return 0;
+ }
+
+ nargs -= 2;
+ svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs);
+ if (!svc) {
+ parse_error(state, "out of memory\n");
+ return 0;
+ }
+ svc->name = args[1];
+ svc->classname = "default";
+ memcpy(svc->args, args + 2, sizeof(char*) * nargs);
+ svc->args[nargs] = 0;
+ svc->nargs = nargs;
+ svc->onrestart.name = "onrestart";
+ list_init(&svc->onrestart.commands);
+ list_add_tail(&service_list, &svc->slist);
+ return svc;
+}
+
+static void parse_line_service(struct parse_state *state, int nargs, char **args)
+{
+ struct service *svc = state->context;
+ struct command *cmd;
+ int i, kw, kw_nargs;
+
+ if (nargs == 0) {
+ return;
+ }
+
+ svc->ioprio_class = IoSchedClass_NONE;
+
+ kw = lookup_keyword(args[0]);
+ switch (kw) {
+ case K_capability:
+ break;
+ case K_class:
+ if (nargs != 2) {
+ parse_error(state, "class option requires a classname\n");
+ } else {
+ svc->classname = args[1];
+ }
+ break;
+ case K_console:
+ svc->flags |= SVC_CONSOLE;
+ break;
+ case K_disabled:
+ svc->flags |= SVC_DISABLED;
+ break;
+ case K_ioprio:
+ if (nargs != 3) {
+ parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n");
+ } else {
+ svc->ioprio_pri = strtoul(args[2], 0, 8);
+
+ if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) {
+ parse_error(state, "priority value must be range 0 - 7\n");
+ break;
+ }
+
+ if (!strcmp(args[1], "rt")) {
+ svc->ioprio_class = IoSchedClass_RT;
+ } else if (!strcmp(args[1], "be")) {
+ svc->ioprio_class = IoSchedClass_BE;
+ } else if (!strcmp(args[1], "idle")) {
+ svc->ioprio_class = IoSchedClass_IDLE;
+ } else {
+ parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n");
+ }
+ }
+ break;
+ case K_group:
+ if (nargs < 2) {
+ parse_error(state, "group option requires a group id\n");
+ } else if (nargs > NR_SVC_SUPP_GIDS + 2) {
+ parse_error(state, "group option accepts at most %d supp. groups\n",
+ NR_SVC_SUPP_GIDS);
+ } else {
+ int n;
+ svc->gid = decode_uid(args[1]);
+ for (n = 2; n < nargs; n++) {
+ svc->supp_gids[n-2] = decode_uid(args[n]);
+ }
+ svc->nr_supp_gids = n - 2;
+ }
+ break;
+ case K_keycodes:
+ if (nargs < 2) {
+ parse_error(state, "keycodes option requires atleast one keycode\n");
+ } else {
+ svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0]));
+ if (!svc->keycodes) {
+ parse_error(state, "could not allocate keycodes\n");
+ } else {
+ svc->nkeycodes = nargs - 1;
+ for (i = 1; i < nargs; i++) {
+ svc->keycodes[i - 1] = atoi(args[i]);
+ }
+ }
+ }
+ break;
+ case K_oneshot:
+ svc->flags |= SVC_ONESHOT;
+ break;
+ case K_onrestart:
+ nargs--;
+ args++;
+ kw = lookup_keyword(args[0]);
+ if (!kw_is(kw, COMMAND)) {
+ parse_error(state, "invalid command '%s'\n", args[0]);
+ break;
+ }
+ kw_nargs = kw_nargs(kw);
+ if (nargs < kw_nargs) {
+ parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1,
+ kw_nargs > 2 ? "arguments" : "argument");
+ break;
+ }
+
+ cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs);
+ cmd->func = kw_func(kw);
+ cmd->nargs = nargs;
+ memcpy(cmd->args, args, sizeof(char*) * nargs);
+ list_add_tail(&svc->onrestart.commands, &cmd->clist);
+ break;
+ case K_critical:
+ svc->flags |= SVC_CRITICAL;
+ break;
+ case K_setenv: { /* name value */
+ struct svcenvinfo *ei;
+ if (nargs < 2) {
+ parse_error(state, "setenv option requires name and value arguments\n");
+ break;
+ }
+ ei = calloc(1, sizeof(*ei));
+ if (!ei) {
+ parse_error(state, "out of memory\n");
+ break;
+ }
+ ei->name = args[1];
+ ei->value = args[2];
+ ei->next = svc->envvars;
+ svc->envvars = ei;
+ break;
+ }
+ case K_socket: {/* name type perm [ uid gid ] */
+ struct socketinfo *si;
+ if (nargs < 4) {
+ parse_error(state, "socket option requires name, type, perm arguments\n");
+ break;
+ }
+ if (strcmp(args[2],"dgram") && strcmp(args[2],"stream")) {
+ parse_error(state, "socket type must be 'dgram' or 'stream'\n");
+ break;
+ }
+ si = calloc(1, sizeof(*si));
+ if (!si) {
+ parse_error(state, "out of memory\n");
+ break;
+ }
+ si->name = args[1];
+ si->type = args[2];
+ si->perm = strtoul(args[3], 0, 8);
+ if (nargs > 4)
+ si->uid = decode_uid(args[4]);
+ if (nargs > 5)
+ si->gid = decode_uid(args[5]);
+ si->next = svc->sockets;
+ svc->sockets = si;
+ break;
+ }
+ case K_user:
+ if (nargs != 2) {
+ parse_error(state, "user option requires a user id\n");
+ } else {
+ svc->uid = decode_uid(args[1]);
+ }
+ break;
+ default:
+ parse_error(state, "invalid option '%s'\n", args[0]);
+ }
+}
+
+static void *parse_action(struct parse_state *state, int nargs, char **args)
+{
+ struct action *act;
+ if (nargs < 2) {
+ parse_error(state, "actions must have a trigger\n");
+ return 0;
+ }
+ if (nargs > 2) {
+ parse_error(state, "actions may not have extra parameters\n");
+ return 0;
+ }
+ act = calloc(1, sizeof(*act));
+ act->name = args[1];
+ list_init(&act->commands);
+ list_add_tail(&action_list, &act->alist);
+ /* XXX add to hash */
+ return act;
+}
+
+static void parse_line_action(struct parse_state* state, int nargs, char **args)
+{
+ struct command *cmd;
+ struct action *act = state->context;
+ int (*func)(int nargs, char **args);
+ int kw, n;
+
+ if (nargs == 0) {
+ return;
+ }
+
+ kw = lookup_keyword(args[0]);
+ if (!kw_is(kw, COMMAND)) {
+ parse_error(state, "invalid command '%s'\n", args[0]);
+ return;
+ }
+
+ n = kw_nargs(kw);
+ if (nargs < n) {
+ parse_error(state, "%s requires %d %s\n", args[0], n - 1,
+ n > 2 ? "arguments" : "argument");
+ return;
+ }
+ cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs);
+ cmd->func = kw_func(kw);
+ cmd->nargs = nargs;
+ memcpy(cmd->args, args, sizeof(char*) * nargs);
+ list_add_tail(&act->commands, &cmd->clist);
+}
diff --git a/init/init_parser.h b/init/init_parser.h
new file mode 100644
index 0000000..ff13b04
--- /dev/null
+++ b/init/init_parser.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _INIT_INIT_PARSER_H_
+#define _INIT_INIT_PARSER_H_
+
+#define INIT_PARSER_MAXARGS 64
+
+struct action;
+
+struct action *action_remove_queue_head(void);
+void action_add_queue_tail(struct action *act);
+void action_for_each_trigger(const char *trigger,
+ void (*func)(struct action *act));
+int action_queue_empty(void);
+void queue_property_triggers(const char *name, const char *value);
+void queue_all_property_triggers();
+void queue_builtin_action(int (*func)(int nargs, char **args), char *name);
+
+int init_parse_config_file(const char *fn);
+
+#endif
diff --git a/init/parser.c b/init/parser.c
index d5c044d..2f36ac7 100644
--- a/init/parser.c
+++ b/init/parser.c
@@ -1,28 +1,11 @@
#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
-#include <stddef.h>
-#include <ctype.h>
-#include "init.h"
-#include "property_service.h"
#include "parser.h"
-#include "util.h"
#include "list.h"
#include "log.h"
-#include <cutils/iosched_policy.h>
-
-#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
-#include <sys/_system_properties.h>
-
-static list_declare(service_list);
-static list_declare(action_list);
-static list_declare(action_queue);
-
#define RAW(x...) log_write(6, x)
void DUMP(void)
@@ -66,27 +49,6 @@
#endif
}
-#define T_EOF 0
-#define T_TEXT 1
-#define T_NEWLINE 2
-
-struct parse_state
-{
- char *ptr;
- char *text;
- int line;
- int nexttoken;
- void *context;
- void (*parse_line)(struct parse_state *state, int nargs, char **args);
- const char *filename;
-};
-
-static void *parse_service(struct parse_state *state, int nargs, char **args);
-static void parse_line_service(struct parse_state *state, int nargs, char **args);
-
-static void *parse_action(struct parse_state *state, int nargs, char **args);
-static void parse_line_action(struct parse_state *state, int nargs, char **args);
-
void parse_error(struct parse_state *state, const char *fmt, ...)
{
va_list ap;
@@ -104,116 +66,6 @@
ERROR("%s", buf);
}
-#define SECTION 0x01
-#define COMMAND 0x02
-#define OPTION 0x04
-
-#include "keywords.h"
-
-#define KEYWORD(symbol, flags, nargs, func) \
- [ K_##symbol ] = { #symbol, func, nargs + 1, flags, },
-
-struct {
- const char *name;
- int (*func)(int nargs, char **args);
- unsigned char nargs;
- unsigned char flags;
-} keyword_info[KEYWORD_COUNT] = {
- [ K_UNKNOWN ] = { "unknown", 0, 0, 0 },
-#include "keywords.h"
-};
-#undef KEYWORD
-
-#define kw_is(kw, type) (keyword_info[kw].flags & (type))
-#define kw_name(kw) (keyword_info[kw].name)
-#define kw_func(kw) (keyword_info[kw].func)
-#define kw_nargs(kw) (keyword_info[kw].nargs)
-
-int lookup_keyword(const char *s)
-{
- switch (*s++) {
- case 'c':
- if (!strcmp(s, "opy")) return K_copy;
- if (!strcmp(s, "apability")) return K_capability;
- if (!strcmp(s, "hdir")) return K_chdir;
- if (!strcmp(s, "hroot")) return K_chroot;
- if (!strcmp(s, "lass")) return K_class;
- if (!strcmp(s, "lass_start")) return K_class_start;
- if (!strcmp(s, "lass_stop")) return K_class_stop;
- if (!strcmp(s, "onsole")) return K_console;
- if (!strcmp(s, "hown")) return K_chown;
- if (!strcmp(s, "hmod")) return K_chmod;
- if (!strcmp(s, "ritical")) return K_critical;
- break;
- case 'd':
- if (!strcmp(s, "isabled")) return K_disabled;
- if (!strcmp(s, "omainname")) return K_domainname;
- if (!strcmp(s, "evice")) return K_device;
- break;
- case 'e':
- if (!strcmp(s, "xec")) return K_exec;
- if (!strcmp(s, "xport")) return K_export;
- break;
- case 'g':
- if (!strcmp(s, "roup")) return K_group;
- break;
- case 'h':
- if (!strcmp(s, "ostname")) return K_hostname;
- break;
- case 'i':
- if (!strcmp(s, "oprio")) return K_ioprio;
- if (!strcmp(s, "fup")) return K_ifup;
- if (!strcmp(s, "nsmod")) return K_insmod;
- if (!strcmp(s, "mport")) return K_import;
- break;
- case 'k':
- if (!strcmp(s, "eycodes")) return K_keycodes;
- break;
- case 'l':
- if (!strcmp(s, "oglevel")) return K_loglevel;
- break;
- case 'm':
- if (!strcmp(s, "kdir")) return K_mkdir;
- if (!strcmp(s, "ount")) return K_mount;
- break;
- case 'o':
- if (!strcmp(s, "n")) return K_on;
- if (!strcmp(s, "neshot")) return K_oneshot;
- if (!strcmp(s, "nrestart")) return K_onrestart;
- break;
- case 'r':
- if (!strcmp(s, "estart")) return K_restart;
- break;
- case 's':
- if (!strcmp(s, "ervice")) return K_service;
- if (!strcmp(s, "etenv")) return K_setenv;
- if (!strcmp(s, "etkey")) return K_setkey;
- if (!strcmp(s, "etprop")) return K_setprop;
- if (!strcmp(s, "etrlimit")) return K_setrlimit;
- if (!strcmp(s, "ocket")) return K_socket;
- if (!strcmp(s, "tart")) return K_start;
- if (!strcmp(s, "top")) return K_stop;
- if (!strcmp(s, "ymlink")) return K_symlink;
- if (!strcmp(s, "ysclktz")) return K_sysclktz;
- break;
- case 't':
- if (!strcmp(s, "rigger")) return K_trigger;
- break;
- case 'u':
- if (!strcmp(s, "ser")) return K_user;
- break;
- case 'w':
- if (!strcmp(s, "rite")) return K_write;
- if (!strcmp(s, "ait")) return K_wait;
- break;
- }
- return K_UNKNOWN;
-}
-
-void parse_line_no_op(struct parse_state *state, int nargs, char **args)
-{
-}
-
int next_token(struct parse_state *state)
{
char *x = state->ptr;
@@ -327,527 +179,3 @@
}
return T_EOF;
}
-
-void parse_line(int nargs, char **args)
-{
- int n;
- int id = lookup_keyword(args[0]);
- printf("%s(%d)", args[0], id);
- for (n = 1; n < nargs; n++) {
- printf(" '%s'", args[n]);
- }
- printf("\n");
-}
-
-void parse_new_section(struct parse_state *state, int kw,
- int nargs, char **args)
-{
- printf("[ %s %s ]\n", args[0],
- nargs > 1 ? args[1] : "");
- switch(kw) {
- case K_service:
- state->context = parse_service(state, nargs, args);
- if (state->context) {
- state->parse_line = parse_line_service;
- return;
- }
- break;
- case K_on:
- state->context = parse_action(state, nargs, args);
- if (state->context) {
- state->parse_line = parse_line_action;
- return;
- }
- break;
- }
- state->parse_line = parse_line_no_op;
-}
-
-static void parse_config(const char *fn, char *s)
-{
- struct parse_state state;
- char *args[SVC_MAXARGS];
- int nargs;
-
- nargs = 0;
- state.filename = fn;
- state.line = 1;
- state.ptr = s;
- state.nexttoken = 0;
- state.parse_line = parse_line_no_op;
- for (;;) {
- switch (next_token(&state)) {
- case T_EOF:
- state.parse_line(&state, 0, 0);
- return;
- case T_NEWLINE:
- if (nargs) {
- int kw = lookup_keyword(args[0]);
- if (kw_is(kw, SECTION)) {
- state.parse_line(&state, 0, 0);
- parse_new_section(&state, kw, nargs, args);
- } else {
- state.parse_line(&state, nargs, args);
- }
- nargs = 0;
- }
- break;
- case T_TEXT:
- if (nargs < SVC_MAXARGS) {
- args[nargs++] = state.text;
- }
- break;
- }
- }
-}
-
-int parse_config_file(const char *fn)
-{
- char *data;
- data = read_file(fn, 0);
- if (!data) return -1;
-
- parse_config(fn, data);
- DUMP();
- return 0;
-}
-
-static int valid_name(const char *name)
-{
- if (strlen(name) > 16) {
- return 0;
- }
- while (*name) {
- if (!isalnum(*name) && (*name != '_') && (*name != '-')) {
- return 0;
- }
- name++;
- }
- return 1;
-}
-
-struct service *service_find_by_name(const char *name)
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- if (!strcmp(svc->name, name)) {
- return svc;
- }
- }
- return 0;
-}
-
-struct service *service_find_by_pid(pid_t pid)
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- if (svc->pid == pid) {
- return svc;
- }
- }
- return 0;
-}
-
-struct service *service_find_by_keychord(int keychord_id)
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- if (svc->keychord_id == keychord_id) {
- return svc;
- }
- }
- return 0;
-}
-
-void service_for_each(void (*func)(struct service *svc))
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- func(svc);
- }
-}
-
-void service_for_each_class(const char *classname,
- void (*func)(struct service *svc))
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- if (!strcmp(svc->classname, classname)) {
- func(svc);
- }
- }
-}
-
-void service_for_each_flags(unsigned matchflags,
- void (*func)(struct service *svc))
-{
- struct listnode *node;
- struct service *svc;
- list_for_each(node, &service_list) {
- svc = node_to_item(node, struct service, slist);
- if (svc->flags & matchflags) {
- func(svc);
- }
- }
-}
-
-void action_for_each_trigger(const char *trigger,
- void (*func)(struct action *act))
-{
- struct listnode *node;
- struct action *act;
- list_for_each(node, &action_list) {
- act = node_to_item(node, struct action, alist);
- if (!strcmp(act->name, trigger)) {
- func(act);
- }
- }
-}
-
-void queue_property_triggers(const char *name, const char *value)
-{
- struct listnode *node;
- struct action *act;
- list_for_each(node, &action_list) {
- act = node_to_item(node, struct action, alist);
- if (!strncmp(act->name, "property:", strlen("property:"))) {
- const char *test = act->name + strlen("property:");
- int name_length = strlen(name);
-
- if (!strncmp(name, test, name_length) &&
- test[name_length] == '=' &&
- !strcmp(test + name_length + 1, value)) {
- action_add_queue_tail(act);
- }
- }
- }
-}
-
-void queue_all_property_triggers()
-{
- struct listnode *node;
- struct action *act;
- list_for_each(node, &action_list) {
- act = node_to_item(node, struct action, alist);
- if (!strncmp(act->name, "property:", strlen("property:"))) {
- /* parse property name and value
- syntax is property:<name>=<value> */
- const char* name = act->name + strlen("property:");
- const char* equals = strchr(name, '=');
- if (equals) {
- char prop_name[PROP_NAME_MAX + 1];
- const char* value;
- int length = equals - name;
- if (length > PROP_NAME_MAX) {
- ERROR("property name too long in trigger %s", act->name);
- } else {
- memcpy(prop_name, name, length);
- prop_name[length] = 0;
-
- /* does the property exist, and match the trigger value? */
- value = property_get(prop_name);
- if (value && !strcmp(equals + 1, value)) {
- action_add_queue_tail(act);
- }
- }
- }
- }
- }
-}
-
-void queue_builtin_action(int (*func)(int nargs, char **args), char *name)
-{
- struct action *act;
- struct command *cmd;
-
- act = calloc(1, sizeof(*act));
- act->name = name;
- list_init(&act->commands);
-
- cmd = calloc(1, sizeof(*cmd));
- cmd->func = func;
- cmd->args[0] = name;
- list_add_tail(&act->commands, &cmd->clist);
-
- list_add_tail(&action_list, &act->alist);
- action_add_queue_tail(act);
-}
-
-void action_add_queue_tail(struct action *act)
-{
- list_add_tail(&action_queue, &act->qlist);
-}
-
-struct action *action_remove_queue_head(void)
-{
- if (list_empty(&action_queue)) {
- return 0;
- } else {
- struct listnode *node = list_head(&action_queue);
- struct action *act = node_to_item(node, struct action, qlist);
- list_remove(node);
- return act;
- }
-}
-
-int action_queue_empty()
-{
- return list_empty(&action_queue);
-}
-
-static void *parse_service(struct parse_state *state, int nargs, char **args)
-{
- struct service *svc;
- if (nargs < 3) {
- parse_error(state, "services must have a name and a program\n");
- return 0;
- }
- if (!valid_name(args[1])) {
- parse_error(state, "invalid service name '%s'\n", args[1]);
- return 0;
- }
-
- svc = service_find_by_name(args[1]);
- if (svc) {
- parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]);
- return 0;
- }
-
- nargs -= 2;
- svc = calloc(1, sizeof(*svc) + sizeof(char*) * nargs);
- if (!svc) {
- parse_error(state, "out of memory\n");
- return 0;
- }
- svc->name = args[1];
- svc->classname = "default";
- memcpy(svc->args, args + 2, sizeof(char*) * nargs);
- svc->args[nargs] = 0;
- svc->nargs = nargs;
- svc->onrestart.name = "onrestart";
- list_init(&svc->onrestart.commands);
- list_add_tail(&service_list, &svc->slist);
- return svc;
-}
-
-static void parse_line_service(struct parse_state *state, int nargs, char **args)
-{
- struct service *svc = state->context;
- struct command *cmd;
- int i, kw, kw_nargs;
-
- if (nargs == 0) {
- return;
- }
-
- svc->ioprio_class = IoSchedClass_NONE;
-
- kw = lookup_keyword(args[0]);
- switch (kw) {
- case K_capability:
- break;
- case K_class:
- if (nargs != 2) {
- parse_error(state, "class option requires a classname\n");
- } else {
- svc->classname = args[1];
- }
- break;
- case K_console:
- svc->flags |= SVC_CONSOLE;
- break;
- case K_disabled:
- svc->flags |= SVC_DISABLED;
- break;
- case K_ioprio:
- if (nargs != 3) {
- parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n");
- } else {
- svc->ioprio_pri = strtoul(args[2], 0, 8);
-
- if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) {
- parse_error(state, "priority value must be range 0 - 7\n");
- break;
- }
-
- if (!strcmp(args[1], "rt")) {
- svc->ioprio_class = IoSchedClass_RT;
- } else if (!strcmp(args[1], "be")) {
- svc->ioprio_class = IoSchedClass_BE;
- } else if (!strcmp(args[1], "idle")) {
- svc->ioprio_class = IoSchedClass_IDLE;
- } else {
- parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n");
- }
- }
- break;
- case K_group:
- if (nargs < 2) {
- parse_error(state, "group option requires a group id\n");
- } else if (nargs > NR_SVC_SUPP_GIDS + 2) {
- parse_error(state, "group option accepts at most %d supp. groups\n",
- NR_SVC_SUPP_GIDS);
- } else {
- int n;
- svc->gid = decode_uid(args[1]);
- for (n = 2; n < nargs; n++) {
- svc->supp_gids[n-2] = decode_uid(args[n]);
- }
- svc->nr_supp_gids = n - 2;
- }
- break;
- case K_keycodes:
- if (nargs < 2) {
- parse_error(state, "keycodes option requires atleast one keycode\n");
- } else {
- svc->keycodes = malloc((nargs - 1) * sizeof(svc->keycodes[0]));
- if (!svc->keycodes) {
- parse_error(state, "could not allocate keycodes\n");
- } else {
- svc->nkeycodes = nargs - 1;
- for (i = 1; i < nargs; i++) {
- svc->keycodes[i - 1] = atoi(args[i]);
- }
- }
- }
- break;
- case K_oneshot:
- svc->flags |= SVC_ONESHOT;
- break;
- case K_onrestart:
- nargs--;
- args++;
- kw = lookup_keyword(args[0]);
- if (!kw_is(kw, COMMAND)) {
- parse_error(state, "invalid command '%s'\n", args[0]);
- break;
- }
- kw_nargs = kw_nargs(kw);
- if (nargs < kw_nargs) {
- parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1,
- kw_nargs > 2 ? "arguments" : "argument");
- break;
- }
-
- cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs);
- cmd->func = kw_func(kw);
- cmd->nargs = nargs;
- memcpy(cmd->args, args, sizeof(char*) * nargs);
- list_add_tail(&svc->onrestart.commands, &cmd->clist);
- break;
- case K_critical:
- svc->flags |= SVC_CRITICAL;
- break;
- case K_setenv: { /* name value */
- struct svcenvinfo *ei;
- if (nargs < 2) {
- parse_error(state, "setenv option requires name and value arguments\n");
- break;
- }
- ei = calloc(1, sizeof(*ei));
- if (!ei) {
- parse_error(state, "out of memory\n");
- break;
- }
- ei->name = args[1];
- ei->value = args[2];
- ei->next = svc->envvars;
- svc->envvars = ei;
- break;
- }
- case K_socket: {/* name type perm [ uid gid ] */
- struct socketinfo *si;
- if (nargs < 4) {
- parse_error(state, "socket option requires name, type, perm arguments\n");
- break;
- }
- if (strcmp(args[2],"dgram") && strcmp(args[2],"stream")) {
- parse_error(state, "socket type must be 'dgram' or 'stream'\n");
- break;
- }
- si = calloc(1, sizeof(*si));
- if (!si) {
- parse_error(state, "out of memory\n");
- break;
- }
- si->name = args[1];
- si->type = args[2];
- si->perm = strtoul(args[3], 0, 8);
- if (nargs > 4)
- si->uid = decode_uid(args[4]);
- if (nargs > 5)
- si->gid = decode_uid(args[5]);
- si->next = svc->sockets;
- svc->sockets = si;
- break;
- }
- case K_user:
- if (nargs != 2) {
- parse_error(state, "user option requires a user id\n");
- } else {
- svc->uid = decode_uid(args[1]);
- }
- break;
- default:
- parse_error(state, "invalid option '%s'\n", args[0]);
- }
-}
-
-static void *parse_action(struct parse_state *state, int nargs, char **args)
-{
- struct action *act;
- if (nargs < 2) {
- parse_error(state, "actions must have a trigger\n");
- return 0;
- }
- if (nargs > 2) {
- parse_error(state, "actions may not have extra parameters\n");
- return 0;
- }
- act = calloc(1, sizeof(*act));
- act->name = args[1];
- list_init(&act->commands);
- list_add_tail(&action_list, &act->alist);
- /* XXX add to hash */
- return act;
-}
-
-static void parse_line_action(struct parse_state* state, int nargs, char **args)
-{
- struct command *cmd;
- struct action *act = state->context;
- int (*func)(int nargs, char **args);
- int kw, n;
-
- if (nargs == 0) {
- return;
- }
-
- kw = lookup_keyword(args[0]);
- if (!kw_is(kw, COMMAND)) {
- parse_error(state, "invalid command '%s'\n", args[0]);
- return;
- }
-
- n = kw_nargs(kw);
- if (nargs < n) {
- parse_error(state, "%s requires %d %s\n", args[0], n - 1,
- n > 2 ? "arguments" : "argument");
- return;
- }
- cmd = malloc(sizeof(*cmd) + sizeof(char*) * nargs);
- cmd->func = kw_func(kw);
- cmd->nargs = nargs;
- memcpy(cmd->args, args, sizeof(char*) * nargs);
- list_add_tail(&act->commands, &cmd->clist);
-}
diff --git a/init/parser.h b/init/parser.h
index e277faf..be93758 100644
--- a/init/parser.h
+++ b/init/parser.h
@@ -17,15 +17,24 @@
#ifndef PARSER_H_
#define PARSER_H_
-struct action;
+#define T_EOF 0
+#define T_TEXT 1
+#define T_NEWLINE 2
-struct action *action_remove_queue_head(void);
-void action_add_queue_tail(struct action *act);
-void action_for_each_trigger(const char *trigger,
- void (*func)(struct action *act));
-int action_queue_empty(void);
-void queue_property_triggers(const char *name, const char *value);
-void queue_all_property_triggers();
-void queue_builtin_action(int (*func)(int nargs, char **args), char *name);
+struct parse_state
+{
+ char *ptr;
+ char *text;
+ int line;
+ int nexttoken;
+ void *context;
+ void (*parse_line)(struct parse_state *state, int nargs, char **args);
+ const char *filename;
+};
+
+int lookup_keyword(const char *s);
+void DUMP(void);
+int next_token(struct parse_state *state);
+void parse_error(struct parse_state *state, const char *fmt, ...);
#endif /* PARSER_H_ */