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Debian now boots to X!

Browse Source 
finit.conf:
        Use this as /etc/finit.conf on a Debian 6.0 based system with X
        installed and sysklogd instead of rsyslogd.  Works.

services:
        Alternative method for extending the finit boot procedure. Simply
        place this script file in an /etc/finit.d/ directory.  The script
        uses the standard run-parts tool to chain load other start scripts.

helpers.c:
        o New functions:
          - run(): home grown system() replacement
          - run_interactive(): display progress and status when called

        o Bugfix start_process(), make sure to use same signal setup for
          children as in run() and run_interactive(). Also, use execvp()
          instead of execv() to allow searching $PATH for executables.

finit.h:
        o Move signal specific code to new signal.h.
        o Bypass verbosity setting to let echo() always print to screen.

finit.c:
        o Make run_parts() the default, remove external deps, it works.

        o Use run() and run_interactive() to speed up execution further
          on embedded systems where forking is expensive.

        o Kernel cmdline "quiet" should not close STDIO since this makes
          it impossible to run some daemons and start scripts.  Instead,
          we let "quiet" toggle the finit verbosity setting.

        o Remove kernel cmdline "--verbose" (Upstart compat), to be used
          to enable verbose finit when kernel should be quiet.

        o Setup kernel specific settings in /etc/sysctl.conf

        o Fix D-Bus startup problems. Probably what caused X from not
          working initially. Silly rabbit.

        o Use system() workaround to start X, cannot get it to start
          at all using run() or run_interactive() at the moment.

signal.h:
        New file, header file for signal.c.  Was about time.

signal.c:
        Remove blocking of SIGCHLD from sig_setup(), instead we setup
        SIGCHLD early in sig_init() to handle fork() in run() & C:o.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2012-09-20 17:50:53 +02:00
parent d21dc2b477
commit 077a7e82e0
13 changed files with 296 additions and 131 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Makefile
-1
View File
@@ -36,7 +36,6 @@ CFLAGS += -W -Wall -Werror -Os
# Disable annoying gcc warning for "warn_unused_result", see GIT 37af997
CPPFLAGS += -U_FORTIFY_SOURCE
CPPFLAGS += -I$(ROOTDIR)/$(CONFIG_LINUXDIR)/include/
CPPFLAGS += -DBUILTIN_RUNPARTS
CPPFLAGS += -DVERSION=\"$(VERSION)\" -DWHOAMI=\"`whoami`@`hostname`\"
CPPFLAGS += -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE
contrib/finit.conf
-10
View File
@@ -1,10 +0,0 @@
# Simple Debian finit.conf
check /dev/vda1
module tipc
module evdev
module loop
module psmouse
user admin
host testbed
network service networking start
service /usr/sbin/sshd -D -- OpenSSH Server
contrib/finit.d/services
-6
View File
@@ -1,6 +0,0 @@
#!/bin/sh
run-parts /etc/rcS.d --arg=start
run-parts /etc/rc2.d --arg=start
#service acpid start
#service networking start
#service ssh start
finit.c
+35 -37
View File
@@ -32,8 +32,10 @@
#include "finit.h"
#include "helpers.h"
#include "service.h"
#include "signal.h"
int debug = 0;
int verbose = 1;
char *sdown = NULL;
char *network = NULL;
char *startx = NULL;
@@ -105,27 +107,22 @@ int main(int UNUSED(args), char *argv[])
* Populate /dev and prepare for runtime events from kernel.
*/
#if defined(USE_UDEV)
system("udevd --daemon");
run_interactive("udevd --daemon", "Populating device tree");
#elif defined (MDEV)
system(MDEV "-s");
run_interactive(MDEV "-s", "Populating device tree");
#endif
/*
* Parse kernel parameters
*/
if ((fp = fopen("/proc/cmdline", "r")) != NULL) {
fgets(line, LINE_SIZE, fp);
fgets(line, sizeof(line), fp);
if (strstr(line, "finit_debug") ||
strstr(line, "--verbose") ||
strstr(line, "--debug"))
if (strstr(line, "finit_debug") || strstr(line, "--debug"))
debug = 1;
if (!debug && strstr(line, "quiet")) {
close(0);
close(1);
close(2);
}
if (!debug && strstr(line, "quiet"))
verbose = 0;
fclose(fp);
}
@@ -141,7 +138,7 @@ int main(int UNUSED(args), char *argv[])
_d("Parse %s ...", FINIT_CONF);
while (!feof(fp)) {
if (!fgets(line, LINE_SIZE, fp))
if (!fgets(line, sizeof(line), fp))
continue;
chomp(line);
@@ -155,7 +152,7 @@ int main(int UNUSED(args), char *argv[])
if (MATCH_CMD(line, "check ", x)) {
strcpy(cmd, "/sbin/fsck -C -a ");
build_cmd(cmd, x, CMD_SIZE);
system(cmd);
run_interactive(cmd, "Checking file system integrity on %s", x);
continue;
}
if (MATCH_CMD(line, "user ", x)) {
@@ -176,13 +173,13 @@ int main(int UNUSED(args), char *argv[])
if (MATCH_CMD(line, "module ", x)) {
strcpy(cmd, "/sbin/modprobe ");
build_cmd(cmd, x, CMD_SIZE);
system(cmd);
run_interactive(cmd, " Loading module %s", x);
continue;
}
if (MATCH_CMD(line, "mknod ", x)) {
strcpy(cmd, "/bin/mknod ");
build_cmd(cmd, x, CMD_SIZE);
system(cmd);
run_interactive(cmd, " Creating device node %s", x);
continue;
}
if (MATCH_CMD(line, "network ", x)) {
@@ -210,18 +207,18 @@ int main(int UNUSED(args), char *argv[])
_d("Mount filesystems in /etc/fstab ...");
#ifdef REMOUNT_ROOTFS_RW
system("/bin/mount -n -o remount,rw /");
run("/bin/mount -n -o remount,rw /");
#endif
#ifdef SYSROOT
mount(SYSROOT, "/", NULL, MS_MOVE, NULL);
run(SYSROOT, "/", NULL, MS_MOVE, NULL);
#endif
umask(0);
system("mount -na");
system("swapon -ea");
run("mount -na");
run("swapon -ea");
umask(0022);
/* Cleanup stale files, if any still linger on. */
system("rm -rf /tmp/* /var/run/* /var/lock/*");
run_interactive("rm -rf /tmp/* /var/run/* /var/lock/*", "Cleanup temporary directories");
/*
* Base FS up, enable standard SysV init signals
@@ -233,7 +230,7 @@ int main(int UNUSED(args), char *argv[])
*/
#ifndef NO_HCTOSYS
_d("Adjust system clock ...");
system("/sbin/hwclock --hctosys");
run_interactive("/sbin/hwclock --hctosys", "Restoring system clock (UTC) from RTC");
#endif
/*
@@ -248,7 +245,7 @@ int main(int UNUSED(args), char *argv[])
while ((d = readdir(dir)) != NULL) {
if (isalnum(d->d_name[0]))
continue;
snprintf(line, LINE_SIZE,
snprintf(line, sizeof(line),
"/etc/resolvconf/run/interface/%s", d->d_name);
unlink(line);
}
@@ -279,11 +276,7 @@ int main(int UNUSED(args), char *argv[])
touch("/etc/resolvconf/run/enable-updates");
chdir("/etc/resolvconf/run/interface");
#ifdef BUILTIN_RUNPARTS
run_parts("/etc/resolvconf/update.d", "-i", NULL);
#else
system(RUNPARTS " --arg=i /etc/resolvconf/update.d");
#endif /* BUILTIN_RUNPARTS */
chdir("/");
#endif /* USE_ETC_RESOLVCONF_RUN */
@@ -293,14 +286,15 @@ int main(int UNUSED(args), char *argv[])
remove("/etc/network/run/ifstate");
#endif
/* Setup kernel specific settings, e.g. allow broadcast ping, etc. */
run("/sbin/sysctl -e -p /etc/sysctl.conf >/dev/null");
/* Set initial hostname. */
set_hostname(hostname);
ifconfig("lo", "127.0.0.1", "255.0.0.0", 1);
if (network) {
_d("Starting networking: %s", network);
system(network);
}
if (network)
run_interactive(network, "Starting networking: %s", network);
/*
* Set random seed
@@ -317,14 +311,14 @@ int main(int UNUSED(args), char *argv[])
* Console setup (for X)
*/
makepath("/var/run/console");
snprintf(line, LINE_SIZE, "/var/run/console/%s", username);
snprintf(line, sizeof(line), "/var/run/console/%s", username);
touch(line);
#ifdef PAM_CONSOLE
if ((fd = open("/var/run/console/console.lock", O_CREAT|O_WRONLY|O_TRUNC, 0644)) >= 0) {
write(fd, username, strlen(username));
close(fd);
system("/sbin/pam_console_apply");
run("/sbin/pam_console_apply");
}
#endif
@@ -333,15 +327,18 @@ int main(int UNUSED(args), char *argv[])
*/
mkdir("/tmp/.X11-unix", 01777);
mkdir("/tmp/.ICE-unix", 01777);
mkdir("/var/run/sshd", 01755);
mkdir("/var/run/sshd", 01755); /* OpenSSH */
mkfifo("/dev/xconsole", 0640); /* sysklogd */
chown("/dev/xconsole", 0, getgroup("tty"));
umask(022);
#ifdef USE_MESSAGE_BUS
_d("Starting D-Bus ...");
mkdir("/var/run/dbus", 0755);
mkdir("/var/lock/subsys/messagebus", 0755);
system("dbus-uuidgen --ensure");
system("su -c \"dbus-daemon --system\" messagebus");
run("dbus-uuidgen --ensure");
remove("/var/run/dbus/pid");
run_interactive("dbus-daemon --system", "Starting D-Bus");
#endif
_d("Starting services from %s", FINIT_CONF);
@@ -396,7 +393,8 @@ int main(int UNUSED(args), char *argv[])
}
if (startx && !debug) {
snprintf(line, sizeof(line), "su -c \"%s\" -l %s", startx, username);
echo("Starting X ...");
snprintf(line, sizeof(line), "su -c '%s' -l %s", startx, username);
system(line);
} else {
static const char msg[] = "\nPlease press Enter to activate this console. ";
@@ -408,7 +406,7 @@ int main(int UNUSED(args), char *argv[])
if (fexist(SYNC_STOPPED))
continue;
system(GETTY);
run(GETTY);
}
}
finit.conf
+13 -6
View File
@@ -1,6 +1,13 @@
user fred
module intel-agp
module p4-clockmod
check /dev/sda3
host eviltwin
startx /usr/bin/startx
# Simple Debian finit.conf
check /dev/vda1
module tipc
module evdev
module loop
module psmouse
user admin
host testbed
network service networking start
service /sbin/klogd -n -- Kernel logging server
service /sbin/syslogd -n -- Syslog server
service /usr/sbin/sshd -D -- OpenSSH server
startx startx
finit.h
+5 -12
View File
@@ -95,9 +95,6 @@
# define USE_MESSAGE_BUS
#endif
#define SYNC_SHUTDOWN "/var/lock/finit.shutdown"
#define SYNC_STOPPED "/var/lock/finit.stopped"
#ifndef DEFUSER
# define DEFUSER "root"
#endif
@@ -105,8 +102,9 @@
# define DEFHOST "noname"
#endif
#define CMD_SIZE 256
#define LINE_SIZE 1024
#define CMD_SIZE 256
#define BUF_SIZE 4096
#define USERNAME_SIZE 16
#define HOSTNAME_SIZE 32
@@ -131,20 +129,15 @@
#define MATCH_CMD(l, c, x) \
(!strncmp(l, c, strlen(c)) && (x = (l) + strlen(c)))
#define echo(fmt, args...) do { fprintf(stderr, fmt "\n", ##args); } while (0)
#define _d(fmt, args...) do { if (debug) { fprintf(stderr, "finit:%s() - " fmt "\n", __func__, ##args); } } while (0)
#define echo(fmt, args...) do { if (1) { fprintf(stderr, fmt "\n", ##args); } } while (0)
#define _d(fmt, args...) do { if (debug) { fprintf(stderr, "finit:%s() - " fmt "\n", __func__, ##args); } } while (0)
#define _e(fmt, args...) do { fprintf(stderr, "finit:%s() - " fmt "\n", __func__, ##args); } while (0)
#define _pe(fmt, args...) do { fprintf(stderr, "finit:%s() - " fmt ". Error %d: %s\n", __func__, ##args, errno, strerror(errno)); } while (0)
extern int debug;
extern int verbose;
extern char *sdown;
/* signal.c */
void do_shutdown (int sig);
int sig_stopped (void);
void sig_init (void);
void sig_setup (void);
/* initctl.c */
void listen_initctl (void);
helpers.c
+144 -24
View File
@@ -37,17 +37,19 @@
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef BUILTIN_RUNPARTS
#include <dirent.h>
#include <stdarg.h>
#include <sys/wait.h>
#endif
#include <grp.h>
#include <pwd.h>
#include "finit.h"
#include "helpers.h"
#include "signal.h"
#define NUM_ARGS 16
#define NUM_SCRIPTS 128 /* ought to be enough for anyone */
/*
* Helpers to replace system() calls
@@ -101,7 +103,6 @@ void ifconfig(char *name, char *inet, char *mask, int up)
close(sock);
}
#define BUF_SIZE 4096
void copyfile(char *src, char *dst, int size)
{
@@ -175,31 +176,18 @@ int print_result(int fail)
int start_process(char *cmd, char *args[], int console)
{
pid_t pid;
sigset_t nmask, omask;
if (sig_stopped())
return 0;
/* Block SIGCHLD while forking. */
sigemptyset(&nmask);
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &nmask, &omask);
pid = fork();
sigprocmask(SIG_SETMASK, &omask, NULL);
if (!pid) {
int i;
struct sigaction act;
struct sigaction sa;
/* Reset signal handlers that were set by the parent process */
sigemptyset(&act.sa_mask);
act.sa_handler = SIG_DFL;
sigemptyset(&nmask);
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_UNBLOCK, &nmask, NULL);
for (i = 1; i < NSIG; i++)
sigaction(i, &act, NULL);
for (i = 1; i < NSIG; i++)
DFLSIG(sa, i, 0);
if (console) {
int fd = open (CONSOLE, O_WRONLY | O_APPEND);
@@ -209,17 +197,150 @@ int start_process(char *cmd, char *args[], int console)
}
}
execv(cmd, args);
execvp(cmd, args);
exit(!console ? print_result(0) : 0);
}
return pid;
}
#ifdef BUILTIN_RUNPARTS
int run(char *cmd)
{
int status, result, i = 0;
FILE *fp;
char *args[NUM_ARGS + 1], *arg, *backup;
pid_t pid;
#define NUM_SCRIPTS 128 /* ought to be enough for anyone */
#define NUM_ARGS 16
/* We must create a copy that is possible to modify. */
backup = arg = strdup(cmd);
if (!arg)
return 1; /* Failed allocating a string to be modified. */
/* Split command line into tokens of an argv[] array. */
args[i++] = strsep(&arg, "\t ");
do {
/* Handle run("su -c \"dbus-daemon --system\" messagebus");
* => "su", "-c", "\"dbus-daemon --system\"", "messagebus" */
if (*arg == '\'' || *arg == '"') {
char *p, delim[2] = " ";
delim[0] = arg[0];
args[i++] = arg++;
strsep(&arg, delim);
p = arg - 1;
*p = *delim;
*arg++ = 0;
} else {
args[i++] = strsep(&arg, "\t ");
}
} while (arg && i < NUM_ARGS);
args[i] = NULL;
#if 0
_e("Splitting: '%s' =>", cmd);
for (i = 0; args[i]; i++)
_e("\t%s", args[i]);
#endif
if (i == NUM_ARGS && args[i]) {
_e("Command too long: %s", cmd);
free(backup);
errno = EOVERFLOW;
return 1;
}
fp = fopen("/dev/null", "w");
pid = fork();
if (0 == pid) {
int i;
struct sigaction sa;
/* Reset signal handlers that were set by the parent process */
for (i = 1; i < NSIG; i++)
DFLSIG(sa, i, 0);
/* Redirect stdio if the caller requested so. */
if (fp) {
int fd = fileno(fp);
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
}
execvp(args[0], args);
_exit(1); /* Only if execv() fails. */
} else if (-1 == pid) {
_pe("%s", args[0]);
return -1;
}
if (waitpid(pid, &status, 0) == -1) {
if (errno == EINTR)
_e("Caught unblocked signal waiting for %s, aborting.", args[0]);
else if (errno == ECHILD)
_e("Caught SIGCHLD waiting for %s, aborting.", args[0]);
else
_e("Failed starting %s, error %d: %s", args[0], errno, strerror (errno));
if (fp) fclose(fp);
free(backup);
return 1;
}
result = WEXITSTATUS(status);
if (WIFEXITED(status)) {
_d("Started %s and ended OK: %d", args[0], result);
} else if (WIFSIGNALED(status)) {
_d("Process %s terminated by signal %d", args[0], WTERMSIG(status));
if (!result)
result = 1; /* Must alert callee that the command did complete successfully.
* This is necessary since not all programs trap signals and
* change their return code accordingly. --Jocke */
}
if (fp) fclose(fp);
free(backup);
return result;
}
int run_interactive(char *cmd, char *fmt, ...)
{
int status, oldout = 1, olderr = 2;
char line[LINE_SIZE];
va_list ap;
FILE *fp = tmpfile();
va_start(ap, fmt);
vsnprintf(line, sizeof(line), fmt, ap);
va_end(ap);
print_descr("", line);
if (fp && !debug) {
oldout = dup(STDOUT_FILENO);
olderr = dup(STDERR_FILENO);
dup2(fileno(fp), STDOUT_FILENO);
dup2(fileno(fp), STDERR_FILENO);
}
status = run(cmd);
if (fp && !debug) {
dup2(oldout, STDOUT_FILENO);
dup2(olderr, STDERR_FILENO);
}
print_result(status);
if (fp && !debug) {
size_t len, written;
rewind(fp);
do {
len = fread(line, 1, sizeof(line), fp);
written = fwrite(line, len, sizeof(char), stderr);
} while (len > 0 && written == len);
fclose(fp);
}
return status;
}
static int cmp(const void *s1, const void *s2)
{
@@ -293,7 +414,6 @@ int run_parts(char *dir, ...)
return 0;
}
#endif /* BUILTIN_RUNPARTS */
int getuser(char *s)
{
helpers.h
+2 -2
View File
@@ -40,9 +40,9 @@ char *get_pidname (pid_t pid, char *name, size_t len);
int kill_procname (const char *name, int signo);
void set_hostname (char *hostname);
#ifdef BUILTIN_RUNPARTS
int run (char *cmd);
int run_interactive (char *cmd, char *fmt, ...);
int run_parts (char *dir, ...);
#endif
#endif /* FINIT_HELPERS_H_ */
initctl.c
+1
View File
@@ -32,6 +32,7 @@
#include <unistd.h>
#include "finit.h"
#include "signal.h" /* do_shutdown() */
#define INIT_MAGIC 0x03091969
#define INIT_CMD_RUNLVL 1
service.c
+2 -1
View File
@@ -35,10 +35,11 @@
#include <sys/wait.h> /* wait() */
#include "finit.h"
#include "helpers.h"
#include "ipc.h"
#include "svc.h"
#include "service.h"
#include "helpers.h"
#include "signal.h"
static int dynamic_event_arg = 0; /* XXX: Fragile construct, refactor! --Jocke */
static int sd = -1;
services
Executable
+15
View File
@@ -0,0 +1,15 @@
#!/bin/sh
# Alternative boot method for other distributions than Debian 6.0
# Place this file in a /etc/finit.d/ directory. At boot finit will
# run all files, using its built-in run_parts(), in that directory.
#
# Here we chain load Debian /etc/rcS.d and /etc/rc2.d directories
# in sequence using the standard run-parts tool.
run-parts /etc/rcS.d --arg=start
run-parts /etc/rc2.d --arg=start
# You can also place other commands in this services file, akin to
# the old finit /usr/sbin/services.sh (not supported anymore).
#service acpid start
#service networking start
#service ssh start
signal.c
+11 -32
View File
@@ -43,48 +43,32 @@
#include "finit.h"
#include "helpers.h"
#define SETSIG(sa, sig, fun, flags) \
do { \
sa.sa_sigaction = fun; \
sa.sa_flags = SA_SIGINFO | flags; \
sigemptyset(&sa.sa_mask); \
sigaction(sig, &sa, NULL); \
} while (0)
#define IGNSIG(sa, sig, flags) \
do { \
sa.sa_handler = SIG_IGN; \
sa.sa_flags = flags; \
sigemptyset(&sa.sa_mask); \
sigaction(sig, &sa, NULL); \
} while (0)
#include "signal.h"
static int stopped = 0;
void do_shutdown (int sig)
{
touch(SYNC_SHUTDOWN);
if (sdown) {
_d("Calling shutdown hook: %s", sdown);
system(sdown);
}
if (sdown)
run_interactive(sdown, "Calling shutdown hook: %s", sdown);
_d("Sending SIGTERM to all processes.");
kill(-1, SIGTERM);
sleep(2);
system("/usr/sbin/alsactl store > /dev/null 2>&1");
run_interactive("/usr/sbin/alsactl store > /dev/null 2>&1", "Saving sound settings");
_d("Saving the system clock.");
system("/sbin/hwclock --systohc");
run_interactive("/sbin/hwclock --utc --systohc", "Saving system time (UTC) to RTC");
_d("Sending SIGKILL to remaining processes.");
kill(-1, SIGKILL);
sync();
sync();
_d("Unmounting file systems, remounting / read-only.");
system("/bin/umount -fa 2>/dev/null");
system("/bin/mount -n -o remount,ro / 2>/dev/null");
run("/bin/umount -fa 2>/dev/null");
run("/bin/mount -n -o remount,ro / 2>/dev/null");
_d("%s.", sig == SIGINT || sig == SIGUSR1 ? "Rebooting" : "Halting");
if (sig == SIGINT || sig == SIGUSR1)
@@ -146,7 +130,7 @@ int sig_stopped(void)
}
/*
* Inital signal setup - ignore everything until we're capable of responding
* Inital signal setup - ignore everything but SIGCHLD until we're capable of responding
*/
void sig_init(void)
{
@@ -155,6 +139,8 @@ void sig_init(void)
for (i = 1; i < NSIG; i++)
IGNSIG(sa, i, SA_RESTART);
SETSIG(sa, SIGCHLD, chld_handler, SA_RESTART);
}
/*
@@ -162,7 +148,6 @@ void sig_init(void)
*/
void sig_setup(void)
{
sigset_t nmask;
struct sigaction sa;
_d("Setup signals");
@@ -192,12 +177,6 @@ void sig_setup(void)
SETSIG(sa, SIGSTOP, sigstop_handler, 0);
SETSIG(sa, SIGTSTP, sigstop_handler, 0);
SETSIG(sa, SIGCONT, sigcont_handler, 0);
SETSIG(sa, SIGCHLD, chld_handler, SA_RESTART);
/* Block SIGCHLD while forking */
sigemptyset(&nmask);
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &nmask, NULL);
/* Disable CTRL-ALT-DELETE from kernel, we handle shutdown gracefully with SIGINT, above */
reboot(RB_DISABLE_CAD);
signal.h
+68
View File
@@ -0,0 +1,68 @@
/* Signal management - Be conservative with what finit responds to!
*
* Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
* Copyright (c) 2008-2012 Joachim Nilsson <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef FINIT_SIGNAL_H_
#define FINIT_SIGNAL_H_
#define SYNC_SHUTDOWN "/var/lock/finit.shutdown"
#define SYNC_STOPPED "/var/lock/finit.stopped"
#define SETSIG(sa, sig, fun, flags) \
do { \
sa.sa_sigaction = fun; \
sa.sa_flags = SA_SIGINFO | flags; \
sigemptyset(&sa.sa_mask); \
sigaction(sig, &sa, NULL); \
} while (0)
#define IGNSIG(sa, sig, flags) \
do { \
sa.sa_handler = SIG_IGN; \
sa.sa_flags = flags; \
sigemptyset(&sa.sa_mask); \
sigaction(sig, &sa, NULL); \
} while (0)
#define DFLSIG(sa, sig, flags) \
do { \
sa.sa_handler = SIG_DFL; \
sa.sa_flags = flags; \
sigemptyset(&sa.sa_mask); \
sigaction(sig, &sa, NULL); \
} while (0)
void do_shutdown (int sig);
int sig_stopped (void);
void sig_init (void);
void sig_setup (void);
#endif /* FINIT_SIGNAL_H_ */
/**
* Local Variables:
* version-control: t
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/