| 20 |
|
#define DEVPATH getenv("PATH") /* device search path */ |
| 21 |
|
#endif |
| 22 |
|
|
| 23 |
+ |
#ifndef DELAY |
| 24 |
+ |
#define DELAY 20 /* seconds to wait for response */ |
| 25 |
+ |
#endif |
| 26 |
+ |
|
| 27 |
|
#ifndef BSD |
| 28 |
|
#define vfork fork |
| 29 |
|
#endif |
| 30 |
|
|
| 31 |
< |
extern char *getpath(), *getenv(); |
| 28 |
< |
|
| 29 |
< |
int onsigio(); |
| 30 |
< |
|
| 31 |
< |
int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
| 31 |
> |
static int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
| 32 |
|
comm_getcur(), comm_comout(), comm_comin(), comm_flush(); |
| 33 |
|
|
| 34 |
|
struct driver comm_driver = { |
| 49 |
|
int p1[2], p2[2]; |
| 50 |
|
char pin[16], pout[16]; |
| 51 |
|
/* find driver program */ |
| 52 |
< |
if ((devname = getpath(dname, DEVPATH, 1)) == NULL) { |
| 52 |
> |
if ((devname = getpath(dname, DEVPATH, X_OK)) == NULL) { |
| 53 |
|
stderr_v(dname); |
| 54 |
|
stderr_v(": not found\n"); |
| 55 |
|
return(NULL); |
| 74 |
|
goto syserr; |
| 75 |
|
if ((devin = fdopen(p2[0], "r")) == NULL) |
| 76 |
|
goto syserr; |
| 77 |
< |
/* verify & get resolution */ |
| 77 |
> |
/* verify initialization */ |
| 78 |
|
putw(COM_SENDM, devout); |
| 79 |
|
fflush(devout); |
| 80 |
|
if (getw(devin) != COM_RECVM) |
| 81 |
|
return(NULL); |
| 82 |
< |
fread((char *)&comm_driver.pixaspect, |
| 83 |
< |
sizeof(comm_driver.pixaspect), 1, devin); |
| 84 |
< |
comm_driver.xsiz = getw(devin); |
| 85 |
< |
comm_driver.ysiz = getw(devin); |
| 82 |
> |
/* get driver parameters */ |
| 83 |
> |
getstate(); |
| 84 |
|
/* set error vectors */ |
| 85 |
|
cmdvec = comm_comout; |
| 86 |
|
if (wrnvec != NULL) |
| 139 |
|
fflush(devout); |
| 140 |
|
if (getc(devin) != COM_FLUSH) |
| 141 |
|
reply_error("flush"); |
| 142 |
< |
comm_driver.inpready = getw(devin); |
| 142 |
> |
getstate(); |
| 143 |
|
} |
| 144 |
|
|
| 145 |
|
|
| 166 |
|
{ |
| 167 |
|
putc(COM_COMOUT, devout); |
| 168 |
|
myputs(str, devout); |
| 169 |
< |
fflush(devout); |
| 169 |
> |
if (str[strlen(str)-1] == '\n') |
| 170 |
> |
fflush(devout); |
| 171 |
|
} |
| 172 |
|
|
| 173 |
|
|
| 187 |
|
if (getc(devin) != COM_COMIN) |
| 188 |
|
reply_error("comin"); |
| 189 |
|
mygets(buf, devin); |
| 190 |
< |
comm_driver.inpready = getw(devin); |
| 190 |
> |
getstate(); |
| 191 |
|
} |
| 192 |
|
|
| 193 |
|
|
| 232 |
|
stderr_v(routine); |
| 233 |
|
stderr_v(": driver reply error\n"); |
| 234 |
|
quit(1); |
| 235 |
+ |
} |
| 236 |
+ |
|
| 237 |
+ |
|
| 238 |
+ |
static |
| 239 |
+ |
getstate() /* get driver state variables */ |
| 240 |
+ |
{ |
| 241 |
+ |
fread((char *)&comm_driver.pixaspect, |
| 242 |
+ |
sizeof(comm_driver.pixaspect), 1, devin); |
| 243 |
+ |
comm_driver.xsiz = getw(devin); |
| 244 |
+ |
comm_driver.ysiz = getw(devin); |
| 245 |
+ |
comm_driver.inpready = getw(devin); |
| 246 |
|
} |