1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #ifndef lint 8 static char sccsid[] = "@(#)startdaemon.c 5.1 (Berkeley) 06/06/85"; 9 #endif not lint 10 11 /* 12 * Tell the printer daemon that there are new files in the spool directory. 13 */ 14 15 #include <stdio.h> 16 #include <sys/types.h> 17 #include <sys/socket.h> 18 #include <sys/un.h> 19 #include "lp.local.h" 20 21 startdaemon(printer) 22 char *printer; 23 { 24 struct sockaddr_un sun; 25 register int s, n; 26 char buf[BUFSIZ]; 27 28 s = socket(AF_UNIX, SOCK_STREAM, 0); 29 if (s < 0) { 30 perr("socket"); 31 return(0); 32 } 33 sun.sun_family = AF_UNIX; 34 strcpy(sun.sun_path, SOCKETNAME); 35 if (connect(s, &sun, strlen(sun.sun_path) + 2) < 0) { 36 perr("connect"); 37 (void) close(s); 38 return(0); 39 } 40 (void) sprintf(buf, "\1%s\n", printer); 41 n = strlen(buf); 42 if (write(s, buf, n) != n) { 43 perr("write"); 44 (void) close(s); 45 return(0); 46 } 47 if (read(s, buf, 1) == 1) { 48 if (buf[0] == '\0') { /* everything is OK */ 49 (void) close(s); 50 return(1); 51 } 52 putchar(buf[0]); 53 } 54 while ((n = read(s, buf, sizeof(buf))) > 0) 55 fwrite(buf, 1, n, stdout); 56 (void) close(s); 57 return(0); 58 } 59 60 static 61 perr(msg) 62 char *msg; 63 { 64 extern char *name; 65 extern int sys_nerr; 66 extern char *sys_errlist[]; 67 extern int errno; 68 69 printf("%s: %s: ", name, msg); 70 fputs(errno < sys_nerr ? sys_errlist[errno] : "Unknown error" , stdout); 71 putchar('\n'); 72 } 73