lptcontrol.c (fe577fe9397456e120a89d6352edc578298ff29c) lptcontrol.c (bc35c17446fab005a7e11b67b9004736f1c8498b)
1/*
2 * Copyright (c) 1994 Geoffrey M. Rehmet
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

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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef lint
32static const char rcsid[] =
1/*
2 * Copyright (c) 1994 Geoffrey M. Rehmet
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

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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef lint
32static const char rcsid[] =
33 "$Id$";
33 "$Id: lptcontrol.c,v 1.6 1997/09/25 06:36:29 charnier Exp $";
34#endif /* not lint */
35
36#include <ctype.h>
37#include <err.h>
38#include <limits.h>
39#include <paths.h>
40#include <stdio.h>
41#include <stdlib.h>

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48#include <sys/types.h>
49
50
51#define PATH_LPCTL _PATH_DEV "lpctl"
52#define DEFAULT_UNIT "0"
53#define IRQ_INVALID -1
54#define DO_POLL 0
55#define USE_IRQ 1
34#endif /* not lint */
35
36#include <ctype.h>
37#include <err.h>
38#include <limits.h>
39#include <paths.h>
40#include <stdio.h>
41#include <stdlib.h>

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48#include <sys/types.h>
49
50
51#define PATH_LPCTL _PATH_DEV "lpctl"
52#define DEFAULT_UNIT "0"
53#define IRQ_INVALID -1
54#define DO_POLL 0
55#define USE_IRQ 1
56#define USE_EXT_MODE 2
57#define USE_STD_MODE 3
56
57static void usage()
58{
58
59static void usage()
60{
59 fprintf(stderr, "usage: lptcontrol -i | -p [-u <unit no.>]\n");
61 fprintf(stderr, "usage: lptcontrol -i | -p | -s | -e [-u <unit no.>]\n");
60 exit(1);
61}
62
63static void set_interrupt_status(int irq_status, const char * file)
64{
65 int fd;
66
67 if((fd = open(file, O_WRONLY, 0660)) < 0)

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84}
85
86int main (int argc, char * argv[])
87{
88 int opt;
89 int irq_status = IRQ_INVALID;
90 char * unit = DEFAULT_UNIT;
91
62 exit(1);
63}
64
65static void set_interrupt_status(int irq_status, const char * file)
66{
67 int fd;
68
69 if((fd = open(file, O_WRONLY, 0660)) < 0)

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86}
87
88int main (int argc, char * argv[])
89{
90 int opt;
91 int irq_status = IRQ_INVALID;
92 char * unit = DEFAULT_UNIT;
93
92 while((opt = getopt(argc, argv, "ipu:")) != -1)
94 while((opt = getopt(argc, argv, "ipesu:")) != -1)
93 switch(opt) {
94 case 'i': irq_status = USE_IRQ; break;
95 case 'p': irq_status = DO_POLL; break;
95 switch(opt) {
96 case 'i': irq_status = USE_IRQ; break;
97 case 'p': irq_status = DO_POLL; break;
98 case 'e': irq_status = USE_EXT_MODE; break;
99 case 's': irq_status = USE_STD_MODE; break;
96 case 'u': unit = optarg;
97 if(!isdigit(*unit))
98 usage();
99 break;
100 default : usage();
101 }
102 if(irq_status == IRQ_INVALID)
103 usage();
104
105 set_interrupt_status(irq_status, dev_file(*unit));
106
107 exit(0);
108}
100 case 'u': unit = optarg;
101 if(!isdigit(*unit))
102 usage();
103 break;
104 default : usage();
105 }
106 if(irq_status == IRQ_INVALID)
107 usage();
108
109 set_interrupt_status(irq_status, dev_file(*unit));
110
111 exit(0);
112}