Added minilogd-2009.01 template, from Arch Linux.
--HG-- extra : convert_revision : d4949b0d88c7cc0a1bd82d7d89660e0684dbaf62
This commit is contained in:
Juan RP
parent
7f403680eb
commit
d5426651e8
2 changed files with 214 additions and 0 deletions
188
templates/minilogd/files/minilogd.c
Executable file
188
templates/minilogd/files/minilogd.c
Executable file
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/* minilogd.c
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*
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* A pale imitation of syslogd. Most notably, doesn't write anything
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* anywhere except possibly back to syslogd.
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*
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <syslog.h>
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#include <unistd.h>
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#include <sys/poll.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/un.h>
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#define MAX_BUF_LINES 10000
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#define BUF_LINE_SIZE 8192
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static int we_own_log=0;
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static char **buffer=NULL;
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static int buflines=0;
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int debug;
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int recvsock;
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void alarm_handler(int x) {
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alarm(0);
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close(recvsock);
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recvsock = -1;
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}
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void freeBuffer() {
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struct sockaddr_un addr;
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int sock;
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int x=0,conn;
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bzero(&addr,sizeof(addr));
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addr.sun_family = AF_LOCAL;
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strncpy(addr.sun_path,_PATH_LOG,sizeof(addr.sun_path)-1);
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/* wait for klogd to hit syslog */
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sleep(2);
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sock = socket(AF_LOCAL, SOCK_STREAM,0);
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conn=connect(sock,(struct sockaddr *) &addr,sizeof(addr));
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while (x<buflines) {
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if (!conn) {
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/*printf("to syslog: %s\n", buffer[x]);*/
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write(sock,buffer[x],strlen(buffer[x])+1);
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}
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free(buffer[x]);
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x++;
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}
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}
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void cleanup(int exitcode) {
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/* If we own the log, unlink it before trying to free our buffer.
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* Otherwise, sending the buffer to /dev/log doesn't make much sense.... */
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if (we_own_log) {
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perror("wol");
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unlink(_PATH_LOG);
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}
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/* Don't try to free buffer if we were called from a signal handler */
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if (exitcode<=0) {
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if (buffer) freeBuffer();
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exit(exitcode);
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} else
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exit(exitcode+128);
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}
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void runDaemon(int sock) {
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struct sockaddr_un addr;
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int x,len,done=0;
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socklen_t addrlen;
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char *message;
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struct stat s1,s2;
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struct pollfd pfds;
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daemon(0,-1);
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/* try not to leave stale sockets lying around */
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/* Hopefully, we won't actually get any of these */
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signal(SIGHUP,cleanup);
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signal(SIGINT,cleanup);
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signal(SIGQUIT,cleanup);
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signal(SIGILL,cleanup);
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signal(SIGABRT,cleanup);
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signal(SIGFPE,cleanup);
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signal(SIGSEGV,cleanup);
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signal(SIGPIPE,cleanup);
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signal(SIGBUS,cleanup);
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signal(SIGTERM,cleanup);
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done = 0;
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/* Get stat info on /dev/log so we can later check to make sure we
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* still own it... */
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if (stat(_PATH_LOG,&s1) != 0)
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memset(&s1, '\0', sizeof(struct stat));
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while (!done) {
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pfds.fd = sock;
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pfds.events = POLLIN|POLLPRI;
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if ( ( (x=poll(&pfds,1,500))==-1) && errno !=EINTR) {
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perror("poll");
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cleanup(-1);
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}
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if ( (x>0) && pfds.revents & (POLLIN | POLLPRI)) {
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message = calloc(BUF_LINE_SIZE,sizeof(char));
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recvsock = accept(sock,(struct sockaddr *) &addr, &addrlen);
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alarm(2);
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signal(SIGALRM, alarm_handler);
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len = read(recvsock,message,BUF_LINE_SIZE);
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alarm(0);
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close(recvsock);
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if (len>0) {
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/*printf("line recv'd: %s\n", message);*/
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if (buflines < MAX_BUF_LINES) {
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if (buffer)
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buffer = realloc(buffer,(buflines+1)*sizeof(char *));
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else
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buffer = malloc(sizeof(char *));
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message[strlen(message)]='\n';
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buffer[buflines]=message;
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buflines++;
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}
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}
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else {
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recvsock=-1;
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}
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}
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if ( (x>0) && ( pfds.revents & (POLLHUP | POLLNVAL)) )
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done = 1;
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/* Check to see if syslogd's yanked our socket out from under us */
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if ( (stat(_PATH_LOG,&s2)!=0) ||
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(s1.st_ino != s2.st_ino ) || (s1.st_ctime != s2.st_ctime) ||
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(s1.st_mtime != s2.st_mtime) ) { /*|| (s1.st_atime != s2.st_atime) ) {*/
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done = 1;
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we_own_log = 0;
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/*printf("someone stole our %s\n", _PATH_LOG);
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printf("st_ino: %d %d\n", s1.st_ino, s2.st_ino);
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printf("st_ctime: %d %d\n", s1.st_ctime, s2.st_ctime);
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printf("st_atime: %d %d\n", s1.st_atime, s2.st_atime);
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printf("st_mtime: %d %d\n", s1.st_mtime, s2.st_mtime);*/
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}
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}
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cleanup(0);
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}
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int main(int argc, char **argv) {
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struct sockaddr_un addr;
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int sock;
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int pid;
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/* option processing made simple... */
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if (argc>1) debug=1;
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/* just in case */
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sock = open("/dev/null",O_RDWR);
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dup2(sock,0);
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dup2(sock,1);
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dup2(sock,2);
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bzero(&addr, sizeof(addr));
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addr.sun_family = AF_LOCAL;
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strncpy(addr.sun_path,_PATH_LOG,sizeof(addr.sun_path)-1);
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sock = socket(AF_LOCAL, SOCK_STREAM,0);
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unlink(_PATH_LOG);
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/* Bind socket before forking, so we know if the server started */
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if (!bind(sock,(struct sockaddr *) &addr, sizeof(addr))) {
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we_own_log = 1;
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listen(sock,5);
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if ((pid=fork())==-1) {
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perror("fork");
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exit(3);
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}
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if (pid) {
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exit(0);
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} else {
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/*printf("starting daemon...\n");*/
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runDaemon(sock);
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/* shouldn't get back here... */
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exit(4);
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}
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} else {
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exit(5);
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}
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}
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/* vim: set ts=2 noet: */
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26
templates/minilogd/template
Normal file
26
templates/minilogd/template
Normal file
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@ -0,0 +1,26 @@
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# Template file for 'minilogd'
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pkgname=minilogd
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version=2009.01
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build_style=custom-install
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short_desc="The Arch linux mini log daemon"
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maintainer="Juan RP <xtraeme@gmail.com>"
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long_desc="
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minlogd is a small log daemon, designed to handle some early
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messages sent by consumers until a real syslog is run.
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minilogd comes from the Arch linux distribution."
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Add_dependency run glibc
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do_install()
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{
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local destdir=$XBPS_DESTDIR/$pkgname-$version
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local filesdir=$XBPS_TEMPLATESDIR/$pkgname/files
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install -d ${destdir}/sbin
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cd ${filesdir}
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gcc ${CFLAGS} minilogd.c -o minilogd
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chmod 755 minilogd
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mv minilogd ${destdir}/sbin
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}
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