10 |
|
|
11 |
|
#include "standard.h" |
12 |
|
#include <fcntl.h> |
13 |
+ |
|
14 |
+ |
#ifndef F_SETLKW |
15 |
+ |
|
16 |
+ |
main(argc, argv) |
17 |
+ |
int argc; |
18 |
+ |
char *argv[]; |
19 |
+ |
{ |
20 |
+ |
fprintf(stderr, "%s: no NFS lock manager on this machine\n", argv[0]); |
21 |
+ |
exit(1); |
22 |
+ |
} |
23 |
+ |
|
24 |
+ |
#else |
25 |
+ |
|
26 |
|
#include <signal.h> |
27 |
|
#include "color.h" |
28 |
|
#include "view.h" |
29 |
|
#include "resolu.h" |
30 |
|
|
31 |
+ |
#ifndef NFS |
32 |
+ |
#define NFS 1 |
33 |
+ |
#endif |
34 |
|
/* set the following to 0 to forgo forking */ |
35 |
|
#ifndef MAXFORK |
36 |
+ |
#if NFS |
37 |
|
#define MAXFORK 3 /* allotment of duped processes */ |
38 |
+ |
#else |
39 |
+ |
#define MAXFORK 0 |
40 |
|
#endif |
41 |
+ |
#endif |
42 |
|
|
43 |
|
/* rpict command */ |
44 |
|
char *rpargv[128] = {"rpict", "-S", "1", "-x", "512", "-y", "512", "-pa", "1"}; |
122 |
|
case 'F': /* syncronization file */ |
123 |
|
if (argv[i][2]) |
124 |
|
break; |
125 |
< |
if ((syncfd = open(argv[++i], O_RDWR)) < 0) { |
125 |
> |
if ((syncfd = open(argv[++i], |
126 |
> |
O_RDWR|O_CREAT, 0666)) < 0) { |
127 |
|
fprintf(stderr, "%s: cannot open\n", |
128 |
|
argv[i]); |
129 |
|
exit(1); |
130 |
|
} |
131 |
|
continue; |
132 |
+ |
case 'z': /* z-file ist verbotten */ |
133 |
+ |
fprintf(stderr, "%s: -z option not allowed\n", |
134 |
+ |
argv[0]); |
135 |
+ |
exit(1); |
136 |
|
case 'o': /* output file */ |
137 |
|
if (argv[i][2]) |
138 |
|
break; |
148 |
|
} |
149 |
|
init(argc, argv); |
150 |
|
rpiece(); |
151 |
< |
rval = cleanup(0); |
127 |
< |
exit(rval); |
151 |
> |
exit(cleanup(0)); |
152 |
|
} |
153 |
|
|
154 |
|
|
188 |
|
} else if ((outfd = open(outfile, O_RDWR)) >= 0) { |
189 |
|
if ((fp = fdopen(dup(outfd), "r+")) == NULL) |
190 |
|
goto filerr; |
191 |
< |
getheader(fp, NULL); /* skip header */ |
192 |
< |
if (fscnresolu(&hr, &vr, fp) < 0 || /* check resolution */ |
191 |
> |
getheader(fp, NULL, NULL); /* skip header */ |
192 |
> |
if (!fscnresolu(&hr, &vr, fp) || /* check resolution */ |
193 |
|
hr != hres*hmult || vr != vres*vmult) { |
194 |
|
fprintf(stderr, "%s: resolution mismatch on file \"%s\"\n", |
195 |
|
progname, outfile); |
203 |
|
scanorig = ftell(fp); /* record position of first scanline */ |
204 |
|
if (fclose(fp) == -1) /* done with stream i/o */ |
205 |
|
goto filerr; |
206 |
+ |
#if NFS |
207 |
|
sync(); /* flush NFS buffers */ |
208 |
+ |
#endif |
209 |
|
/* start rpict process */ |
210 |
|
if (open_process(rpd, rpargv) <= 0) { |
211 |
|
fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]); |
351 |
|
exit(cleanup(1)); |
352 |
|
} |
353 |
|
/* check header from rpict */ |
354 |
< |
getheader(fromrp, NULL); |
355 |
< |
if (fscnresolu(&hr, &vr, fromrp) < 0 || hr != hres | vr != vres) { |
354 |
> |
getheader(fromrp, NULL, NULL); |
355 |
> |
if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) { |
356 |
|
fprintf(stderr, "%s: resolution mismatch from %s\n", |
357 |
|
progname, rpargv[0]); |
358 |
|
exit(cleanup(1)); |
378 |
|
#else |
379 |
|
pid = -1; /* no forking */ |
380 |
|
#endif |
355 |
– |
/* lock file section so NFS doesn't mess up */ |
356 |
– |
fls.l_whence = 0; |
381 |
|
fls.l_len = (long)vres*hmult*hres*sizeof(COLR); |
382 |
|
fls.l_start = scanorig + (vmult-1-ypos)*fls.l_len; |
383 |
+ |
#if NFS |
384 |
+ |
/* lock file section so NFS doesn't mess up */ |
385 |
+ |
fls.l_whence = 0; |
386 |
|
fls.l_type = F_WRLCK; |
387 |
|
fcntl(outfd, F_SETLKW, &fls); |
388 |
+ |
#endif |
389 |
|
/* write new piece to file */ |
390 |
|
if (lseek(outfd, fls.l_start+(long)xpos*hres*sizeof(COLR), 0) == -1) |
391 |
|
goto seekerr; |
404 |
|
goto seekerr; |
405 |
|
} |
406 |
|
if (pid == -1) { /* fork failed */ |
407 |
+ |
#if NFS |
408 |
|
fls.l_type = F_UNLCK; /* release lock */ |
409 |
|
fcntl(outfd, F_SETLKW, &fls); |
410 |
+ |
#endif |
411 |
|
return(0); |
412 |
|
} |
413 |
|
_exit(0); /* else exit child process (releasing lock) */ |
418 |
|
fprintf(stderr, "%s: write error on file \"%s\"\n", progname, outfile); |
419 |
|
_exit(1); |
420 |
|
} |
421 |
+ |
|
422 |
+ |
#endif |