92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
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/* lp 1.4 - Send file to the lineprinter Author: Kees J. Bot
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* 3 Dec 1989
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*/
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#define nil 0
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#include <sys/types.h>
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#include <stdio.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/wait.h>
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char LPD1[] = "/usr/sbin/lpd"; /* Proper place of lpd */
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char LPD2[] = "/usr/bin/lpd"; /* Minix has no sbin directories. */
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void report(char *mess)
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{
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fprintf(stderr, "lp: %s: %s\n", mess, strerror(errno));
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}
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void fatal(char *mess)
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{
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report(mess);
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exit(1);
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}
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void lp(char *file)
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/* Start the lpd daemon giving it the file to spool and print. */
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{
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int pid, status;
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if (file[0] != '/' || (pid= fork()) == 0) {
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execl(LPD1, LPD1, file, (char *) nil);
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if (errno != ENOENT) fatal(LPD1);
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execl(LPD2, LPD2, file, (char *) nil);
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fatal(LPD2);
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}
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if (pid < 0) fatal("can't fork");
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if (waitpid(pid, &status, 0) < 0) fatal("wait");
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if (status != 0) exit(1);
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}
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char path[PATH_MAX+1];
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int cwdsize;
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int main(int argc, char **argp)
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{
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int e=0;
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char *file;
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if (argc <= 1) lp("stdin");
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/* Lpd requires full path names, so find out where we are. */
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if (getcwd(path, sizeof(path)) == nil)
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fatal("Can't determine current directory");
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cwdsize= strlen(path);
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/* Hand each file to lpd. */
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while ((file= *++argp) != nil) {
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close(0);
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if (open(file, O_RDONLY) != 0) {
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report(file);
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e=1;
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continue;
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}
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if (file[0] == '/') {
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lp(file);
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continue;
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}
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if (cwdsize + 1 + strlen(file) + 1 > sizeof(path)) {
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fprintf(stderr,
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"lp: full pathname of %s is too long\n",
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file);
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e=1;
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continue;
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}
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path[cwdsize] = '/';
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strcpy(path + cwdsize + 1, file);
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lp(path);
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}
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exit(e);
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}
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