minor changes to mount/umount to support-by-ignoring the "-v" flag.

Added optional core dumping as a feature for init, and include a rewrite
of syslogd so that it now supports multiple concurrent connections.
 -Erik
This commit is contained in:
Erik Andersen 2000-04-04 18:14:25 +00:00
parent 3364d78b18
commit 983b51b17b
8 changed files with 352 additions and 174 deletions

24
init.c
View File

@ -45,7 +45,7 @@
#include <sys/reboot.h>
#include <sys/sysinfo.h> /* For check_free_memory() */
#ifdef BB_SYSLOGD
#include <sys/syslog.h>
# include <sys/syslog.h>
#endif
#include <sys/sysmacros.h>
#include <sys/types.h>
@ -54,6 +54,15 @@
#include <termios.h>
#include <unistd.h>
/*
* When CORE_ENABLE_FLAG_FILE exists, setrlimit is called before
* process is spawned to set corelimit to unlimited.
*/
#define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
#include <sys/resource.h>
#include <sys/time.h>
#ifndef KERNEL_VERSION
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#endif
@ -406,6 +415,16 @@ static pid_t run(char *command, char *terminal, int get_enter)
cmd[i] = NULL;
}
{
struct stat sb;
if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
struct rlimit limit;
limit.rlim_cur = RLIM_INFINITY;
limit.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &limit);
}
}
/* Now run it. The new program will take over this PID,
* so nothing further in init.c should be run. */
execve(cmd[0], cmd, environment);
@ -836,6 +855,7 @@ extern int init_main(int argc, char **argv)
close(1);
close(2);
set_term(0);
chdir("/");
setsid();
/* Make sure PATH is set to something sane */
@ -881,7 +901,7 @@ extern int init_main(int argc, char **argv)
* of "askfirst" shells */
parse_inittab();
}
/* Fix up argv[0] to be certain we claim to be init */
strncpy(argv[0], "init", strlen(argv[0])+1);
if (argc > 1)

View File

@ -45,7 +45,7 @@
#include <sys/reboot.h>
#include <sys/sysinfo.h> /* For check_free_memory() */
#ifdef BB_SYSLOGD
#include <sys/syslog.h>
# include <sys/syslog.h>
#endif
#include <sys/sysmacros.h>
#include <sys/types.h>
@ -54,6 +54,15 @@
#include <termios.h>
#include <unistd.h>
/*
* When CORE_ENABLE_FLAG_FILE exists, setrlimit is called before
* process is spawned to set corelimit to unlimited.
*/
#define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
#include <sys/resource.h>
#include <sys/time.h>
#ifndef KERNEL_VERSION
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#endif
@ -406,6 +415,16 @@ static pid_t run(char *command, char *terminal, int get_enter)
cmd[i] = NULL;
}
{
struct stat sb;
if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
struct rlimit limit;
limit.rlim_cur = RLIM_INFINITY;
limit.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &limit);
}
}
/* Now run it. The new program will take over this PID,
* so nothing further in init.c should be run. */
execve(cmd[0], cmd, environment);
@ -836,6 +855,7 @@ extern int init_main(int argc, char **argv)
close(1);
close(2);
set_term(0);
chdir("/");
setsid();
/* Make sure PATH is set to something sane */
@ -881,7 +901,7 @@ extern int init_main(int argc, char **argv)
* of "askfirst" shells */
parse_inittab();
}
/* Fix up argv[0] to be certain we claim to be init */
strncpy(argv[0], "init", strlen(argv[0])+1);
if (argc > 1)

View File

@ -418,6 +418,7 @@ extern int mount_main(int argc, char **argv)
break;
#endif
case 'v':
break; /* ignore -v */
case 'h':
case '-':
goto goodbye;

View File

@ -22,21 +22,21 @@
*/
#include "internal.h"
#include <stdio.h>
#include <stdarg.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <ctype.h>
#include <netdb.h>
#include <sys/klog.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <paths.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/klog.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/un.h>
#include <time.h>
#include <unistd.h>
#define ksyslog klogctl
extern int ksyslog(int type, char *buf, int len);
@ -47,8 +47,10 @@ extern int ksyslog(int type, char *buf, int len);
#include <sys/syslog.h>
/* Path for the file where all log messages are written */
#define __LOG_FILE "/var/log/messages"
#define __LOG_FILE "/var/log/messages"
/* Path to the unix socket */
char lfile[PATH_MAX] = "";
static char *logFilePath = __LOG_FILE;
@ -70,9 +72,8 @@ static const char syslogd_usage[] =
#endif
"\t-O\tSpecify an alternate log file. default=/var/log/messages\n";
/* Note: There is also a function called "message()" in init.c */
/* print a message to the log file */
/* Print a message to the log file. */
static void message(char *fmt, ...)
{
int fd;
@ -145,7 +146,7 @@ static void logMessage(int pri, char *msg)
static void quit_signal(int sig)
{
logMessage(0, "System log daemon exiting.");
unlink(_PATH_LOG);
unlink(lfile);
exit(TRUE);
}
@ -157,88 +158,134 @@ static void domark(int sig)
}
}
static void doSyslogd(void)
static void doSyslogd (void) __attribute__ ((noreturn));
static void doSyslogd (void)
{
struct sockaddr_un sunx;
int fd, conn;
size_t addrLength;
char buf[1024];
char *q, *p = buf;
int readSize;
int sock_fd;
fd_set readfds;
char lfile[PATH_MAX];
int t = readlink(_PATH_LOG, lfile, sizeof(lfile) - 1); /* Resolve symlinks */
/* Set up sig handlers */
signal(SIGINT, quit_signal);
signal(SIGTERM, quit_signal);
signal(SIGQUIT, quit_signal);
signal(SIGALRM, domark);
signal(SIGHUP, SIG_IGN);
alarm(MarkInterval);
signal (SIGINT, quit_signal);
signal (SIGTERM, quit_signal);
signal (SIGQUIT, quit_signal);
signal (SIGHUP, SIG_IGN);
signal (SIGALRM, domark);
alarm (MarkInterval);
/* Remove any preexisting socket/file */
unlink(_PATH_LOG);
if (t == -1)
strncpy(lfile, _PATH_LOG, sizeof(lfile));
else
lfile[t] = '\0';
memset(&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX; /* Unix domain socket */
strncpy(sunx.sun_path, _PATH_LOG, sizeof(sunx.sun_path));
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror("Couldn't obtain descriptor for socket " _PATH_LOG);
exit(FALSE);
unlink (lfile);
memset (&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX;
strncpy (sunx.sun_path, lfile, sizeof(sunx.sun_path));
if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror ("Couldn't obtain descriptor for socket " _PATH_LOG);
exit (FALSE);
}
addrLength = sizeof(sunx.sun_family) + strlen(sunx.sun_path);
if ((bind(fd, (struct sockaddr *) &sunx, addrLength)) ||
(listen(fd, 5))) {
perror("Could not connect to socket " _PATH_LOG);
exit(FALSE);
addrLength = sizeof (sunx.sun_family) + strlen (sunx.sun_path);
if ((bind (sock_fd, (struct sockaddr *) &sunx, addrLength)) ||
(listen (sock_fd, 5))) {
perror ("Could not connect to socket " _PATH_LOG);
exit (FALSE);
}
umask(0);
if (chmod(_PATH_LOG, 0666) < 0) {
perror("Could not set permission on " _PATH_LOG);
exit(FALSE);
if (chmod (lfile, 0666) < 0) {
perror ("Could not set permission on " _PATH_LOG);
exit (FALSE);
}
logMessage(0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")");
FD_ZERO (&readfds);
FD_SET (sock_fd, &readfds);
logMessage (0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")");
while ((conn = accept(fd, (struct sockaddr *) &sunx,
&addrLength)) >= 0) {
while ((readSize = read(conn, buf, sizeof(buf))) > 0) {
char line[1025];
unsigned char c;
int pri = (LOG_USER | LOG_NOTICE);
for (;;) {
int n_ready;
int fd;
memset(line, 0, sizeof(line));
p = buf;
q = line;
while (p && (c = *p) && q < &line[sizeof(line) - 1]) {
if (c == '<') {
/* Parse the magic priority number */
pri = 0;
while (isdigit(*(++p))) {
pri = 10 * pri + (*p - '0');
}
if (pri & ~(LOG_FACMASK | LOG_PRIMASK))
pri = (LOG_USER | LOG_NOTICE);
} else if (c == '\n') {
*q++ = ' ';
} else if (iscntrl(c) && (c < 0177)) {
*q++ = '^';
*q++ = c ^ 0100;
} else {
*q++ = c;
}
p++;
}
*q = '\0';
/* Now log it */
logMessage(pri, line);
if ((n_ready = select (FD_SETSIZE, &readfds, NULL, NULL, NULL)) < 0) {
if (errno == EINTR) continue; /* alarm may have happened. */
perror ("select");
exit (FALSE);
}
close(conn);
}
close(fd);
/* Skip stdin, stdout, stderr */
for (fd = 3; fd <= FD_SETSIZE; fd++) {
if (FD_ISSET (fd, &readfds)) {
if (fd == sock_fd) {
int conn;
if ((conn = accept(sock_fd, (struct sockaddr *) &sunx,
&addrLength)) < 0) {
perror ("accept");
exit (FALSE); /* #### ??? */
}
FD_SET (conn, &readfds);
}
else {
#define BUFSIZE 1024 + 1
char buf[BUFSIZE];
char *q, *p;
int n_read;
n_read = read (fd, buf, BUFSIZE);
if (n_read < 0) {
perror ("read error");
goto close_fd;
}
else if (n_read > 0) {
char line[BUFSIZE];
unsigned char c;
int pri = (LOG_USER | LOG_NOTICE);
memset (line, 0, sizeof(line));
p = buf;
q = line;
while (p && (c = *p) && q < &line[sizeof(line) - 1]) {
if (c == '<') {
/* Parse the magic priority number */
pri = 0;
while (isdigit(*(++p))) {
pri = 10 * pri + (*p - '0');
}
if (pri & ~(LOG_FACMASK | LOG_PRIMASK))
pri = (LOG_USER | LOG_NOTICE);
} else if (c == '\n') {
*q++ = ' ';
} else if (iscntrl(c) && (c < 0177)) {
*q++ = '^';
*q++ = c ^ 0100;
} else {
*q++ = c;
}
p++;
}
*q = '\0';
/* Now log it */
logMessage(pri, line);
close_fd:
close (fd);
FD_CLR (fd, &readfds);
}
else { /* EOF */
goto close_fd;
}
}
}
}
}
}
#ifdef BB_KLOGD
@ -251,7 +298,8 @@ static void klogd_signal(int sig)
exit(TRUE);
}
static void doKlogd(void)
static void doKlogd (void) __attribute__ ((noreturn));
static void doKlogd (void)
{
int priority = LOG_INFO;
char log_buffer[4096];
@ -317,6 +365,16 @@ static void doKlogd(void)
#endif
static void daemon_init (char **argv, char *dz, void fn (void)) __attribute__ ((noreturn));
static void daemon_init (char **argv, char *dz, void fn (void))
{
setsid();
chdir ("/");
strncpy(argv[0], dz, strlen(argv[0]));
fn();
exit(0);
}
extern int syslogd_main(int argc, char **argv)
{
int pid, klogd_pid;
@ -366,13 +424,14 @@ extern int syslogd_main(int argc, char **argv)
*p++ = '\0';
}
umask(0);
#ifdef BB_KLOGD
/* Start up the klogd process */
if (startKlogd == TRUE) {
klogd_pid = fork();
if (klogd_pid == 0) {
strncpy(argv[0], "klogd", strlen(argv[0]));
doKlogd();
daemon_init (argv, "klogd", doKlogd);
}
}
#endif
@ -382,8 +441,7 @@ extern int syslogd_main(int argc, char **argv)
if (pid < 0)
exit(pid);
else if (pid == 0) {
strncpy(argv[0], "syslogd", strlen(argv[0]));
doSyslogd();
daemon_init (argv, "syslogd", doSyslogd);
}
} else {
doSyslogd();
@ -391,3 +449,11 @@ extern int syslogd_main(int argc, char **argv)
exit(TRUE);
}
/*
* Local Variables
* c-file-style: "linux"
* c-basic-offset: 4
* tab-width: 4
* End:
*/

236
syslogd.c
View File

@ -22,21 +22,21 @@
*/
#include "internal.h"
#include <stdio.h>
#include <stdarg.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <ctype.h>
#include <netdb.h>
#include <sys/klog.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <paths.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/klog.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/un.h>
#include <time.h>
#include <unistd.h>
#define ksyslog klogctl
extern int ksyslog(int type, char *buf, int len);
@ -47,8 +47,10 @@ extern int ksyslog(int type, char *buf, int len);
#include <sys/syslog.h>
/* Path for the file where all log messages are written */
#define __LOG_FILE "/var/log/messages"
#define __LOG_FILE "/var/log/messages"
/* Path to the unix socket */
char lfile[PATH_MAX] = "";
static char *logFilePath = __LOG_FILE;
@ -70,9 +72,8 @@ static const char syslogd_usage[] =
#endif
"\t-O\tSpecify an alternate log file. default=/var/log/messages\n";
/* Note: There is also a function called "message()" in init.c */
/* print a message to the log file */
/* Print a message to the log file. */
static void message(char *fmt, ...)
{
int fd;
@ -145,7 +146,7 @@ static void logMessage(int pri, char *msg)
static void quit_signal(int sig)
{
logMessage(0, "System log daemon exiting.");
unlink(_PATH_LOG);
unlink(lfile);
exit(TRUE);
}
@ -157,88 +158,134 @@ static void domark(int sig)
}
}
static void doSyslogd(void)
static void doSyslogd (void) __attribute__ ((noreturn));
static void doSyslogd (void)
{
struct sockaddr_un sunx;
int fd, conn;
size_t addrLength;
char buf[1024];
char *q, *p = buf;
int readSize;
int sock_fd;
fd_set readfds;
char lfile[PATH_MAX];
int t = readlink(_PATH_LOG, lfile, sizeof(lfile) - 1); /* Resolve symlinks */
/* Set up sig handlers */
signal(SIGINT, quit_signal);
signal(SIGTERM, quit_signal);
signal(SIGQUIT, quit_signal);
signal(SIGALRM, domark);
signal(SIGHUP, SIG_IGN);
alarm(MarkInterval);
signal (SIGINT, quit_signal);
signal (SIGTERM, quit_signal);
signal (SIGQUIT, quit_signal);
signal (SIGHUP, SIG_IGN);
signal (SIGALRM, domark);
alarm (MarkInterval);
/* Remove any preexisting socket/file */
unlink(_PATH_LOG);
if (t == -1)
strncpy(lfile, _PATH_LOG, sizeof(lfile));
else
lfile[t] = '\0';
memset(&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX; /* Unix domain socket */
strncpy(sunx.sun_path, _PATH_LOG, sizeof(sunx.sun_path));
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror("Couldn't obtain descriptor for socket " _PATH_LOG);
exit(FALSE);
unlink (lfile);
memset (&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX;
strncpy (sunx.sun_path, lfile, sizeof(sunx.sun_path));
if ((sock_fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror ("Couldn't obtain descriptor for socket " _PATH_LOG);
exit (FALSE);
}
addrLength = sizeof(sunx.sun_family) + strlen(sunx.sun_path);
if ((bind(fd, (struct sockaddr *) &sunx, addrLength)) ||
(listen(fd, 5))) {
perror("Could not connect to socket " _PATH_LOG);
exit(FALSE);
addrLength = sizeof (sunx.sun_family) + strlen (sunx.sun_path);
if ((bind (sock_fd, (struct sockaddr *) &sunx, addrLength)) ||
(listen (sock_fd, 5))) {
perror ("Could not connect to socket " _PATH_LOG);
exit (FALSE);
}
umask(0);
if (chmod(_PATH_LOG, 0666) < 0) {
perror("Could not set permission on " _PATH_LOG);
exit(FALSE);
if (chmod (lfile, 0666) < 0) {
perror ("Could not set permission on " _PATH_LOG);
exit (FALSE);
}
logMessage(0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")");
FD_ZERO (&readfds);
FD_SET (sock_fd, &readfds);
logMessage (0, "syslogd started: BusyBox v" BB_VER " (" BB_BT ")");
while ((conn = accept(fd, (struct sockaddr *) &sunx,
&addrLength)) >= 0) {
while ((readSize = read(conn, buf, sizeof(buf))) > 0) {
char line[1025];
unsigned char c;
int pri = (LOG_USER | LOG_NOTICE);
for (;;) {
int n_ready;
int fd;
memset(line, 0, sizeof(line));
p = buf;
q = line;
while (p && (c = *p) && q < &line[sizeof(line) - 1]) {
if (c == '<') {
/* Parse the magic priority number */
pri = 0;
while (isdigit(*(++p))) {
pri = 10 * pri + (*p - '0');
}
if (pri & ~(LOG_FACMASK | LOG_PRIMASK))
pri = (LOG_USER | LOG_NOTICE);
} else if (c == '\n') {
*q++ = ' ';
} else if (iscntrl(c) && (c < 0177)) {
*q++ = '^';
*q++ = c ^ 0100;
} else {
*q++ = c;
}
p++;
}
*q = '\0';
/* Now log it */
logMessage(pri, line);
if ((n_ready = select (FD_SETSIZE, &readfds, NULL, NULL, NULL)) < 0) {
if (errno == EINTR) continue; /* alarm may have happened. */
perror ("select");
exit (FALSE);
}
close(conn);
}
close(fd);
/* Skip stdin, stdout, stderr */
for (fd = 3; fd <= FD_SETSIZE; fd++) {
if (FD_ISSET (fd, &readfds)) {
if (fd == sock_fd) {
int conn;
if ((conn = accept(sock_fd, (struct sockaddr *) &sunx,
&addrLength)) < 0) {
perror ("accept");
exit (FALSE); /* #### ??? */
}
FD_SET (conn, &readfds);
}
else {
#define BUFSIZE 1024 + 1
char buf[BUFSIZE];
char *q, *p;
int n_read;
n_read = read (fd, buf, BUFSIZE);
if (n_read < 0) {
perror ("read error");
goto close_fd;
}
else if (n_read > 0) {
char line[BUFSIZE];
unsigned char c;
int pri = (LOG_USER | LOG_NOTICE);
memset (line, 0, sizeof(line));
p = buf;
q = line;
while (p && (c = *p) && q < &line[sizeof(line) - 1]) {
if (c == '<') {
/* Parse the magic priority number */
pri = 0;
while (isdigit(*(++p))) {
pri = 10 * pri + (*p - '0');
}
if (pri & ~(LOG_FACMASK | LOG_PRIMASK))
pri = (LOG_USER | LOG_NOTICE);
} else if (c == '\n') {
*q++ = ' ';
} else if (iscntrl(c) && (c < 0177)) {
*q++ = '^';
*q++ = c ^ 0100;
} else {
*q++ = c;
}
p++;
}
*q = '\0';
/* Now log it */
logMessage(pri, line);
close_fd:
close (fd);
FD_CLR (fd, &readfds);
}
else { /* EOF */
goto close_fd;
}
}
}
}
}
}
#ifdef BB_KLOGD
@ -251,7 +298,8 @@ static void klogd_signal(int sig)
exit(TRUE);
}
static void doKlogd(void)
static void doKlogd (void) __attribute__ ((noreturn));
static void doKlogd (void)
{
int priority = LOG_INFO;
char log_buffer[4096];
@ -317,6 +365,16 @@ static void doKlogd(void)
#endif
static void daemon_init (char **argv, char *dz, void fn (void)) __attribute__ ((noreturn));
static void daemon_init (char **argv, char *dz, void fn (void))
{
setsid();
chdir ("/");
strncpy(argv[0], dz, strlen(argv[0]));
fn();
exit(0);
}
extern int syslogd_main(int argc, char **argv)
{
int pid, klogd_pid;
@ -366,13 +424,14 @@ extern int syslogd_main(int argc, char **argv)
*p++ = '\0';
}
umask(0);
#ifdef BB_KLOGD
/* Start up the klogd process */
if (startKlogd == TRUE) {
klogd_pid = fork();
if (klogd_pid == 0) {
strncpy(argv[0], "klogd", strlen(argv[0]));
doKlogd();
daemon_init (argv, "klogd", doKlogd);
}
}
#endif
@ -382,8 +441,7 @@ extern int syslogd_main(int argc, char **argv)
if (pid < 0)
exit(pid);
else if (pid == 0) {
strncpy(argv[0], "syslogd", strlen(argv[0]));
doSyslogd();
daemon_init (argv, "syslogd", doSyslogd);
}
} else {
doSyslogd();
@ -391,3 +449,11 @@ extern int syslogd_main(int argc, char **argv)
exit(TRUE);
}
/*
* Local Variables
* c-file-style: "linux"
* c-basic-offset: 4
* tab-width: 4
* End:
*/

View File

@ -260,6 +260,8 @@ extern int umount_main(int argc, char **argv)
doRemount = TRUE;
break;
#endif
case 'v':
break; /* ignore -v */
default:
usage(umount_usage);
}

View File

@ -418,6 +418,7 @@ extern int mount_main(int argc, char **argv)
break;
#endif
case 'v':
break; /* ignore -v */
case 'h':
case '-':
goto goodbye;

View File

@ -260,6 +260,8 @@ extern int umount_main(int argc, char **argv)
doRemount = TRUE;
break;
#endif
case 'v':
break; /* ignore -v */
default:
usage(umount_usage);
}