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/****************************************************************************\
* Copyright (C) 1992 by Michael K. Johnson, johnsonm@nigel.vnet.net *
* *
* This file is placed under the conditions of the GNU public *
* license, version 2, or any later version. See file COPYING *
* for information on distribution conditions. *
\****************************************************************************/
/* $Id: tunelp.c,v 1.6 1995/06/04 01:47:11 faith Exp $
* $Log: tunelp.c,v $
* Revision 1.6 1995/06/04 01:47:11 faith
* Changes for util-linux-2.4
*
* Revision 1.5 1995/03/12 01:29:50 faith
* util-linux-2.1
*
* Revision 1.5 1995/01/13 10:33:43 johnsonm
* Chris's changes for new ioctl numbers and backwards compatibility
* and the reset ioctl.
*
* Revision 1.4 1995/01/03 17:42:14 johnsonm
* -s isn't supposed to take an argument; removed : after s in getopt...
*
* Revision 1.3 1995/01/03 07:36:49 johnsonm
* Fixed typo
*
* Revision 1.2 1995/01/03 07:33:44 johnsonm
* revisions for lp driver updates in Linux 1.1.76
*
*
*/
#include<unistd.h>
#include<stdio.h>
#include<fcntl.h>
#include<linux/lp.h>
#include<linux/fs.h>
#include<sys/ioctl.h>
#include<sys/stat.h>
#include<sys/types.h>
#include<malloc.h>
#include<string.h>
#include<errno.h>
struct command {
long op;
long val;
struct command *next;
};
void print_usage(char *progname) {
printf("Usage: %s <device> [ -i <IRQ> | -t <TIME> | -c <CHARS> | -w <WAIT> | \n"
" -a [on|off] | -o [on|off] | -C [on|off] | -q [on|off] | -s ]\n", progname);
exit (1);
}
void *mylloc(long size) {
void *ptr;
if(!(ptr = (void*)malloc(size))) {
perror("malloc error");
exit(2);
}
return ptr;
}
long get_val(char *val) {
long ret;
if (!(sscanf(val, "%d", &ret) == 1)) {
perror("sscanf error");
exit(3);
}
return ret;
}
long get_onoff(char *val) {
if (!strncasecmp("on", val, 2))
return 1;
return 0;
}
int main (int argc, char ** argv) {
int c, fd, irq, status, show_irq, offset = 0, retval;
char *progname;
char *filename;
struct stat statbuf;
struct command *cmds, *cmdst;
progname = argv[0];
if (argc < 2) print_usage(progname);
filename = strdup(argv[1]);
fd = open(filename, O_WRONLY|O_NONBLOCK, 0);
/* Need to open O_NONBLOCK in case ABORTOPEN is already set and
printer is off or off-line or in an error condition. Otherwise
we would abort... */
if (fd < 0) {
perror(argv[1]);
return -1;
}
fstat(fd, &statbuf);
if((!S_ISCHR(statbuf.st_mode)) || (MAJOR(statbuf.st_rdev) != 6 )
|| (MINOR(statbuf.st_rdev) > 3)) {
printf("%s: %s not an lp device.\n", argv[0], argv[1]);
print_usage(progname);
}
cmdst = cmds = mylloc(sizeof(struct command));
cmds->next = 0;
show_irq = 1;
while ((c = getopt(argc, argv, "t:c:w:a:i:ho:C:sq:r")) != EOF) {
switch (c) {
case 'h':
print_usage(progname);
break;
case 'i':
cmds->op = LPSETIRQ;
cmds->val = get_val(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 't':
cmds->op = LPTIME;
cmds->val = get_val(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 'c':
cmds->op = LPCHAR;
cmds->val = get_val(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 'w':
cmds->op = LPWAIT;
cmds->val = get_val(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 'a':
cmds->op = LPABORT;
cmds->val = get_onoff(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 'q':
if (get_onoff(optarg)) {
show_irq=1;
} else {
show_irq=0;
}
#ifdef LPGETSTATUS
case 'o':
cmds->op = LPABORTOPEN;
cmds->val = get_onoff(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 'C':
cmds->op = LPCAREFUL;
cmds->val = get_onoff(optarg);
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
case 's':
show_irq = 0;
cmds->op = LPGETSTATUS;
cmds->val = 0;
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
#endif
#ifdef LPRESET
case 'r':
cmds->op = LPRESET;
cmds->val = 0;
cmds->next = mylloc(sizeof(struct command));
cmds = cmds->next; cmds->next = 0;
break;
#endif
default: print_usage(progname);
}
}
/* Allow for binaries compiled under a new kernel to work on the old ones */
if (LPGETIRQ >= 0x0600 && ioctl(fd, LPGETIRQ, &irq) < 0 && errno == EINVAL)
offset = 0x0600; /* We don't understand the new ioctls */
cmds = cmdst;
while (cmds->next) {
#ifdef LPGETSTATUS
if (cmds->op == LPGETSTATUS) {
status = 0xdeadbeef;
retval = ioctl(fd, LPGETSTATUS - offset, &status);
if (retval < 0)
perror("LPGETSTATUS error");
else {
if (status == 0xdeadbeef) /* a few 1.1.7x kernels will do this */
status = retval;
printf("%s status is %d", filename, status);
if (!(status & LP_PBUSY)) printf(", busy");
if (!(status & LP_PACK)) printf(", ready");
if ((status & LP_POUTPA)) printf(", out of paper");
if ((status & LP_PSELECD)) printf(", on-line");
if (!(status & LP_PERRORP)) printf(", error");
printf("\n");
}
} else
#endif /* LPGETSTATUS */
if (ioctl(fd, cmds->op - offset, cmds->val) < 0) {
perror("tunelp: ioctl");
}
cmdst = cmds;
cmds = cmds->next;
free(cmdst);
}
if (show_irq) {
irq = 0xdeadbeef;
retval = ioctl(fd, LPGETIRQ - offset, &irq);
if (retval == -1) {
perror("LPGETIRQ error");
exit(4);
}
if (irq == 0xdeadbeef) /* up to 1.1.77 will do this */
irq = retval;
if (irq)
printf("%s using IRQ %d\n", filename, irq);
else
printf("%s using polling\n", filename);
}
close(fd);
return 0;
}
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