shithub: neatpost

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post: exit if output device cannot be opened

--- a/dev.c

+++ b/dev.c

@@ -50,6 +50,8 @@

 	strcpy(dev_dev, dev);

 	sprintf(path, "%s/dev%s/DESC", dir, dev);

 	desc = fopen(path, "r");

+	if (!desc)

+		return 1;

 	while (fscanf(desc, "%s", tok) == 1) {

 		if (tok[0] == '#') {

 			skipline(desc);

--- a/post.c

+++ b/post.c

@@ -7,6 +7,7 @@

  */

 #include <ctype.h>

 #include <stdio.h>

+#include <stdlib.h>

 #include <string.h>

 #include "post.h"

@@ -228,7 +229,10 @@

 		outmnt(pos);

 		break;

 	case 'i':

-		dev_open(devpath, devname);

+		if (dev_open(devpath, devname)) {

+			fprintf(stderr, "neatpost: cannot open device %s\n", devname);

+			exit(1);

+		}

 		ps_header();

 		break;

 	case 'T':

@@ -309,7 +313,7 @@

 		nexteol();

 		break;

 	default:

-		fprintf(stderr, "unknown command: %c\n", c);

+		fprintf(stderr, "neatpost: unknown command %c\n", c);

 	}

 }