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Annotation of 43BSDReno/usr.sbin/lpr/common_source/startdaemon.c, revision 1.1

1.1     ! root        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 are permitted provided
        !             6:  * that: (1) source distributions retain this entire copyright notice and
        !             7:  * comment, and (2) distributions including binaries display the following
        !             8:  * acknowledgement:  ``This product includes software developed by the
        !             9:  * University of California, Berkeley and its contributors'' in the
        !            10:  * documentation or other materials provided with the distribution and in
        !            11:  * all advertising materials mentioning features or use of this software.
        !            12:  * Neither the name of the University nor the names of its contributors may
        !            13:  * be used to endorse or promote products derived from this software without
        !            14:  * specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)startdaemon.c      5.6 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: /*
        !            25:  * Tell the printer daemon that there are new files in the spool directory.
        !            26:  */
        !            27: 
        !            28: #include <sys/types.h>
        !            29: #include <sys/socket.h>
        !            30: #include <sys/un.h>
        !            31: #include <stdio.h>
        !            32: #include "lp.local.h"
        !            33: #include "pathnames.h"
        !            34: 
        !            35: startdaemon(printer)
        !            36:        char *printer;
        !            37: {
        !            38:        struct sockaddr_un sun;
        !            39:        register int s, n;
        !            40:        char buf[BUFSIZ];
        !            41: 
        !            42:        s = socket(AF_UNIX, SOCK_STREAM, 0);
        !            43:        if (s < 0) {
        !            44:                perr("socket");
        !            45:                return(0);
        !            46:        }
        !            47:        sun.sun_family = AF_UNIX;
        !            48:        strcpy(sun.sun_path, _PATH_SOCKETNAME);
        !            49:        if (connect(s, &sun, strlen(sun.sun_path) + 2) < 0) {
        !            50:                perr("connect");
        !            51:                (void) close(s);
        !            52:                return(0);
        !            53:        }
        !            54:        (void) sprintf(buf, "\1%s\n", printer);
        !            55:        n = strlen(buf);
        !            56:        if (write(s, buf, n) != n) {
        !            57:                perr("write");
        !            58:                (void) close(s);
        !            59:                return(0);
        !            60:        }
        !            61:        if (read(s, buf, 1) == 1) {
        !            62:                if (buf[0] == '\0') {           /* everything is OK */
        !            63:                        (void) close(s);
        !            64:                        return(1);
        !            65:                }
        !            66:                putchar(buf[0]);
        !            67:        }
        !            68:        while ((n = read(s, buf, sizeof(buf))) > 0)
        !            69:                fwrite(buf, 1, n, stdout);
        !            70:        (void) close(s);
        !            71:        return(0);
        !            72: }
        !            73: 
        !            74: static
        !            75: perr(msg)
        !            76:        char *msg;
        !            77: {
        !            78:        extern int errno;
        !            79:        extern char *name;
        !            80:        char *strerror();
        !            81: 
        !            82:        (void)printf("%s: %s: %s\n", name, msg, strerror(errno));
        !            83: }

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