improved error messages

[unix-history] / usr / src / usr.sbin / lpr / common_source / startdaemon.c

/*      startdaemon.c   4.4     83/05/27        */
/*
* Tell the printer daemon that there are new files in the spool directory.
*/

#include "lp.h"

startdaemon()
{
       register int rem, i, err = 0;
       char buf[BUFSIZ];

       rem = getport(host);
       if (rem < 0) {
               perr();
               return(0);
       }
       (void) sprintf(buf, "\1%s\n", printer);
       i = strlen(buf);
       if (write(rem, buf, i) != i) {
               perr();
               (void) close(rem);
               return(0);
       }
       while ((i = read(rem, buf, sizeof(buf))) > 0) {
               (void) fwrite(buf, 1, i, stdout);
               err++;
       }
       if (i < 0)
               perr();
       (void) close(rem);
       return(i == 0 && err == 0);
}

static
perr()
{
       extern int sys_nerr;
       extern char *sys_errlist[];

       printf("%s: ", name);
       fputs(errno < sys_nerr ? sys_errlist[errno] : "Unknown error" , stdout);
       putchar('\n');
}