| 172 |
|
scanorig = ftell(fp); /* record position of first scanline */ |
| 173 |
|
if (fclose(fp) == -1) /* done with stream i/o */ |
| 174 |
|
goto filerr; |
| 175 |
– |
sync(); /* avoid NFS buffering */ |
| 175 |
|
/* start rpict process */ |
| 176 |
|
if (open_process(rpd, rpargv) <= 0) { |
| 177 |
|
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
| 303 |
|
putpiece(xpos, ypos) /* get next piece from rpict */ |
| 304 |
|
int xpos, ypos; |
| 305 |
|
{ |
| 306 |
+ |
struct flock fls; |
| 307 |
|
int hr, vr; |
| 308 |
|
int y; |
| 309 |
|
|
| 319 |
|
progname, rpargv[0]); |
| 320 |
|
exit(1); |
| 321 |
|
} |
| 322 |
+ |
fls.l_whence = 1; |
| 323 |
+ |
fls.l_start = 0L; |
| 324 |
+ |
fls.l_len = hr*sizeof(COLR); |
| 325 |
|
for (y = 0; y < vr; y++) { /* transfer scanlines */ |
| 326 |
|
if (freadcolrs(scanline, hr, fromrp) < 0) { |
| 327 |
|
fprintf(stderr, "%s: read error from %s\n", |
| 334 |
|
fprintf(stderr, "%s: seek error\n", outfile); |
| 335 |
|
exit(1); |
| 336 |
|
} |
| 337 |
+ |
fls.l_type = F_WRLCK; |
| 338 |
+ |
fcntl(outfd, F_SETLKW, &fls); |
| 339 |
|
if (writebuf(outfd, (char *)scanline, hr*sizeof(COLR)) != |
| 340 |
|
hr*sizeof(COLR)) { |
| 341 |
|
fprintf(stderr, "%s: write error\n", outfile); |
| 342 |
|
exit(1); |
| 343 |
|
} |
| 344 |
+ |
fls.l_type = F_UNLCK; |
| 345 |
+ |
fcntl(outfd, F_SETLKW, &fls); |
| 346 |
|
} |
| 347 |
|
} |
