startdaemon.c revision 1.1 1 /*
2 * Copyright (c) 1983 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifndef lint
35 static char sccsid[] = "@(#)startdaemon.c 5.7 (Berkeley) 3/2/91";
36 #endif /* not lint */
37
38 /*
39 * Tell the printer daemon that there are new files in the spool directory.
40 */
41
42 #include <sys/types.h>
43 #include <sys/socket.h>
44 #include <sys/un.h>
45 #include <stdio.h>
46 #include "lp.local.h"
47 #include "pathnames.h"
48
49 startdaemon(printer)
50 char *printer;
51 {
52 struct sockaddr_un sun;
53 register int s, n;
54 char buf[BUFSIZ];
55 static void perr();
56
57 s = socket(AF_UNIX, SOCK_STREAM, 0);
58 if (s < 0) {
59 perr("socket");
60 return(0);
61 }
62 sun.sun_family = AF_UNIX;
63 strcpy(sun.sun_path, _PATH_SOCKETNAME);
64 if (connect(s, (struct sockaddr *)&sun, strlen(sun.sun_path) + 2) < 0) {
65 perr("connect");
66 (void) close(s);
67 return(0);
68 }
69 (void) sprintf(buf, "\1%s\n", printer);
70 n = strlen(buf);
71 if (write(s, buf, n) != n) {
72 perr("write");
73 (void) close(s);
74 return(0);
75 }
76 if (read(s, buf, 1) == 1) {
77 if (buf[0] == '\0') { /* everything is OK */
78 (void) close(s);
79 return(1);
80 }
81 putchar(buf[0]);
82 }
83 while ((n = read(s, buf, sizeof(buf))) > 0)
84 fwrite(buf, 1, n, stdout);
85 (void) close(s);
86 return(0);
87 }
88
89 static void
90 perr(msg)
91 char *msg;
92 {
93 extern int errno;
94 extern char *name;
95 char *strerror();
96
97 (void)printf("%s: %s: %s\n", name, msg, strerror(errno));
98 }
99