| 12 |
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| 13 |
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#include "standard.h" |
| 14 |
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|
| 15 |
– |
#include <signal.h> |
| 16 |
– |
|
| 15 |
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#include "color.h" |
| 16 |
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| 17 |
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#include "driver.h" |
| 18 |
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|
| 19 |
+ |
#include "vfork.h" |
| 20 |
+ |
|
| 21 |
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#ifndef DEVPATH |
| 22 |
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#define DEVPATH getenv("PATH") /* device search path */ |
| 23 |
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#endif |
| 24 |
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|
| 25 |
< |
#ifndef BSD |
| 26 |
< |
#define vfork fork |
| 25 |
> |
#ifndef DELAY |
| 26 |
> |
#define DELAY 20 /* seconds to wait for response */ |
| 27 |
|
#endif |
| 28 |
|
|
| 29 |
< |
extern char *getpath(), *getenv(); |
| 30 |
< |
|
| 31 |
< |
int onsigio(); |
| 32 |
< |
|
| 33 |
< |
int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
| 29 |
> |
static int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
| 30 |
|
comm_getcur(), comm_comout(), comm_comin(), comm_flush(); |
| 31 |
|
|
| 32 |
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struct driver comm_driver = { |
| 47 |
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int p1[2], p2[2]; |
| 48 |
|
char pin[16], pout[16]; |
| 49 |
|
/* find driver program */ |
| 50 |
< |
if ((devname = getpath(dname, DEVPATH, 1)) == NULL) { |
| 50 |
> |
if ((devname = getpath(dname, DEVPATH, X_OK)) == NULL) { |
| 51 |
|
stderr_v(dname); |
| 52 |
|
stderr_v(": not found\n"); |
| 53 |
|
return(NULL); |
| 72 |
|
goto syserr; |
| 73 |
|
if ((devin = fdopen(p2[0], "r")) == NULL) |
| 74 |
|
goto syserr; |
| 75 |
< |
/* verify & get resolution */ |
| 75 |
> |
/* verify initialization */ |
| 76 |
|
putw(COM_SENDM, devout); |
| 77 |
|
fflush(devout); |
| 78 |
|
if (getw(devin) != COM_RECVM) |
| 79 |
|
return(NULL); |
| 80 |
< |
fread((char *)&comm_driver.pixaspect, |
| 81 |
< |
sizeof(comm_driver.pixaspect), 1, devin); |
| 86 |
< |
comm_driver.xsiz = getw(devin); |
| 87 |
< |
comm_driver.ysiz = getw(devin); |
| 88 |
< |
/* input handling */ |
| 89 |
< |
signal(SIGIO, onsigio); |
| 80 |
> |
/* get driver parameters */ |
| 81 |
> |
getstate(); |
| 82 |
|
/* set error vectors */ |
| 83 |
|
cmdvec = comm_comout; |
| 84 |
|
if (wrnvec != NULL) |
| 98 |
|
cmdvec = NULL; /* reset error vectors */ |
| 99 |
|
if (wrnvec != NULL) |
| 100 |
|
wrnvec = stderr_v; |
| 109 |
– |
signal(SIGIO, SIG_DFL); |
| 101 |
|
fclose(devout); |
| 102 |
|
fclose(devin); |
| 103 |
|
while ((pid = wait(0)) != -1 && pid != devchild) |
| 135 |
|
{ |
| 136 |
|
putc(COM_FLUSH, devout); |
| 137 |
|
fflush(devout); |
| 138 |
+ |
if (getc(devin) != COM_FLUSH) |
| 139 |
+ |
reply_error("flush"); |
| 140 |
+ |
getstate(); |
| 141 |
|
} |
| 142 |
|
|
| 143 |
|
|
| 164 |
|
{ |
| 165 |
|
putc(COM_COMOUT, devout); |
| 166 |
|
myputs(str, devout); |
| 167 |
< |
fflush(devout); |
| 167 |
> |
if (str[strlen(str)-1] == '\n') |
| 168 |
> |
fflush(devout); |
| 169 |
|
} |
| 170 |
|
|
| 171 |
|
|
| 185 |
|
if (getc(devin) != COM_COMIN) |
| 186 |
|
reply_error("comin"); |
| 187 |
|
mygets(buf, devin); |
| 188 |
< |
if (comm_driver.inpready > 0) |
| 194 |
< |
comm_driver.inpready--; |
| 188 |
> |
getstate(); |
| 189 |
|
} |
| 190 |
|
|
| 191 |
|
|
| 234 |
|
|
| 235 |
|
|
| 236 |
|
static |
| 237 |
< |
onsigio() /* input ready */ |
| 237 |
> |
getstate() /* get driver state variables */ |
| 238 |
|
{ |
| 239 |
< |
comm_driver.inpready++; |
| 239 |
> |
fread((char *)&comm_driver.pixaspect, |
| 240 |
> |
sizeof(comm_driver.pixaspect), 1, devin); |
| 241 |
> |
comm_driver.xsiz = getw(devin); |
| 242 |
> |
comm_driver.ysiz = getw(devin); |
| 243 |
> |
comm_driver.inpready = getw(devin); |
| 244 |
|
} |
