74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)startdaemon.c 1.1 92/07/30 SMI"; /* from UCB 5.1 6/6/85 */
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#endif not lint
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/*
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* Tell the printer daemon that there are new files in the spool directory.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <strings.h>
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#include "lp.local.h"
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startdaemon(printer)
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char *printer;
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{
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struct sockaddr_un s_un;
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register int s, n;
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char buf[BUFSIZ];
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s = socket(AF_UNIX, SOCK_STREAM, 0);
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if (s < 0) {
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perr("socket");
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return (0);
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}
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s_un.sun_family = AF_UNIX;
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strcpy(s_un.sun_path, SOCKETNAME);
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if (connect(s, (struct sockaddr *)&s_un, strlen(s_un.sun_path)+2) < 0) {
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perr("connect");
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(void) close(s);
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return (0);
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}
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(void) sprintf(buf, "\1%s\n", printer);
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n = strlen(buf);
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if (write(s, buf, n) != n) {
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perr("write");
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(void) close(s);
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return (0);
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}
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if (read(s, buf, 1) == 1) {
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if (buf[0] == '\0') { /* everything is OK */
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(void) close(s);
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return (1);
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}
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putchar(buf[0]);
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}
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while ((n = read(s, buf, sizeof buf)) > 0)
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fwrite(buf, 1, n, stdout);
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(void) close(s);
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return (0);
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}
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static
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perr(msg)
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char *msg;
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{
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extern char *name;
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extern int sys_nerr;
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extern char *sys_errlist[];
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extern int errno;
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printf("%s: %s: ", name, msg);
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fputs(errno < sys_nerr ? sys_errlist[errno] : "Unknown error", stdout);
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putchar('\n');
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}
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