From c3695a8497dcbc4f5dc3348f9dd0f4ffb01badee Mon Sep 17 00:00:00 2001
From: Bill Nottingham <notting@redhat.com>
Date: Wed, 3 Feb 1999 17:06:47 +0000
Subject: add initlog stuff. do "halt -p", "umount -f" in shutdown. use
 %defattr in specfile... um, I think that's it.

---
 src/process.c | 216 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 216 insertions(+)
 create mode 100644 src/process.c

(limited to 'src/process.c')

diff --git a/src/process.c b/src/process.c
new file mode 100644
index 00000000..48f3b314
--- /dev/null
+++ b/src/process.c
@@ -0,0 +1,216 @@
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/poll.h>
+#include <sys/wait.h>
+
+#include <popt.h>
+
+#include "initlog.h"
+#include "process.h"
+
+int forkCommand(char **args, int *outfd, int *errfd, int *cmdfd, int quiet) {
+   /* Fork command 'cmd', returning pid, and optionally pointer
+    * to open file descriptor fd */
+    int fdin, fdout, fderr, fdcmd, pid;
+    int outpipe[2], errpipe[2], fdpipe[2];
+    
+    if ( (pipe(outpipe)==-1) || (pipe(errpipe)==-1) || (pipe(fdpipe)==-1) ) {
+	perror("pipe");
+	return -1;
+    }
+    
+    dup2(0,fdin);
+    if (outfd) {
+       fdout = outpipe[1];
+      *outfd = outpipe[0];
+    } else {
+       if (!quiet)
+	 dup2(1,fdout);
+    }
+    if (errfd) {
+       fderr = errpipe[1];
+      *errfd = errpipe[0];
+    } else {
+       if (!quiet)
+	 dup2(2,fderr);
+    }
+    fdcmd = fdpipe[1];
+    if (cmdfd)
+      *cmdfd = fdpipe[0];
+    if ((pid = fork())==-1) {
+	perror("fork");
+	return -1;
+    }
+    if (pid) {
+	/* parent */
+	close(fdin);
+	close(fdout);
+	close(fderr);
+	close(fdcmd);
+	return pid;
+    } else {
+	/* kid */
+       if (outfd) { 
+	 if ( (dup2(fdout,1)==-1) ) {
+	    perror("dup2");
+	    exit(-1);
+	 }
+       } else if (quiet)
+	    if ((dup2(open("/dev/null",O_WRONLY),1))==-1) {
+	     perror("dup2");
+	     exit(-1);
+	    }
+
+       if (errfd)  {
+	 if ((dup2(fderr,2)==-1)) {
+	    perror("dup2");
+	    exit(-1);
+	 }
+       } else if (quiet) 
+	    if ((dup2(open("/dev/null",O_WRONLY),2))==-1)  {
+	       perror("dup2");
+	       exit(-1);
+	    }
+
+ 
+       if ((dup2(fdcmd,CMD_FD)==-1)) {
+	    perror("dup2");
+	    exit(-1);
+	}
+	close(fdout);
+	close(fderr);
+	close(fdcmd);
+	if (outfd)
+	  close(*outfd);
+	if (errfd)
+	  close(*errfd);
+	if (cmdfd)
+	  close(*cmdfd);
+	execvp(args[0],args);
+	perror("execvp");
+	exit(-1);
+    }
+}
+
+int monitor(char *cmdname, int pid, int numfds, int *fds, int reexec, int quiet) {
+    struct pollfd *pfds;
+    char *buf=malloc(2048*sizeof(char));
+    int outpipe[2];
+    char *tmpstr=NULL;
+    int x,y,rc=-1;
+    int done=0;
+    int output=0;
+    
+    pipe(outpipe);
+   
+    pfds = malloc(numfds*sizeof(struct pollfd));
+    for (x=0;x<numfds;x++) {
+	pfds[x].fd = fds[x];
+	pfds[x].events = POLLIN | POLLPRI;
+    }
+	
+    while (!done) {
+       if ((x=poll(pfds,numfds,500))==-1) {
+	  perror("poll");
+	  return -1;
+       }
+       if (waitpid(pid,&rc,WNOHANG))
+	 done=1;
+       y=0;
+       while (y<numfds) {
+	  if ( x && ((pfds[y].revents & (POLLIN | POLLPRI)) )) {
+	     int bytesread = 0;
+	     
+	     do {
+		buf=calloc(2048,sizeof(char));
+		bytesread = read(pfds[y].fd,buf,2048);
+		if (bytesread==-1) {
+		   perror("read");
+		   return -1;
+		}
+		if (bytesread) {
+		  if (!quiet && !reexec)
+		    write(1,buf,bytesread);
+		  if (quiet) {
+		     output = 1;
+		     write(outpipe[1],buf,bytesread);
+		  }
+		  while ((tmpstr=getLine(&buf))) {
+		     if (!reexec) 
+		       logString(cmdname,tmpstr);
+		     else {
+			char **cmdargs=NULL;
+			char **tmpargs=NULL;
+			int cmdargc,x;
+			
+			poptParseArgvString(tmpstr,&cmdargc,&tmpargs);
+			cmdargs=malloc( (cmdargc++) * sizeof(char *) );
+			cmdargs[0]=strdup("initlog");
+			for (x=0;x<(cmdargc-1);x++) {
+			   cmdargs[x+1]=tmpargs[x];
+			}
+			processArgs(cmdargc,cmdargs);
+		     }
+		  }
+		}
+	        
+	     } while ( bytesread==2048 );
+	  }
+	  y++;
+       }
+    }
+   rc = rc>>8;
+ 
+   if (!rc)
+      return 0;
+   else {
+      /* If there was an error and we're quiet, be loud */
+      int x;
+      
+      if (quiet && output) {
+	 buf=calloc(2048,sizeof(char));
+	 do {
+	    x=read(outpipe[0],buf,2048);
+	    write(1,buf,x);
+	    buf=calloc(2048,sizeof(char));
+	 } while (x==2048);
+      }
+      return (rc);
+   }
+}
+
+int runCommand(char *cmd, int reexec, int quiet) {
+    int fds[2];
+    int pid,x;
+    char **args, **tmpargs;
+    char *cmdname;
+    
+    poptParseArgvString(cmd,&x,&tmpargs);
+    args = malloc((x+1)*sizeof(char *));
+    for ( pid = 0; pid < x ; pid++) {
+	args[pid] = strdup(tmpargs[pid]);
+    }
+    args[pid] = NULL;
+    if (strcmp(args[0],"sh") && strcmp(args[0],"/bin/sh")) 
+      cmdname = basename(args[0]);
+    else
+      cmdname = basename(args[1]);
+    if ((cmdname[0] =='K' || cmdname[0] == 'S') && ( 30 <= cmdname[1] <= 39 )
+       && ( 30 <= cmdname[2] <= 39 ) )
+      cmdname+=3;
+    if (!reexec) {
+       pid=forkCommand(args,&fds[0],&fds[1],NULL,quiet);
+       x=monitor(cmdname,pid,2,fds,reexec,quiet);
+    } else {
+       setenv("IN_INITLOG","yes",1);
+       pid=forkCommand(args,NULL,NULL,&fds[0],quiet);
+       unsetenv("IN_INITLOG");
+       x=monitor(cmdname,pid,1,&fds[0],reexec,quiet);
+    }
+    return x;
+}
-- 
cgit