22 |
|
#define PCTFREE 20 /* maximum fraction to free (%) */ |
23 |
|
#endif |
24 |
|
|
25 |
+ |
/* define MAXFRAG if you want to limit fragment tracking memory */ |
26 |
+ |
|
27 |
|
#ifndef BSD |
28 |
|
#define write writebuf /* safe i/o routines */ |
29 |
|
#define read readbuf |
30 |
|
#endif |
31 |
|
|
30 |
– |
#define MAXFRAG (128*FRAGBLK) /* maximum fragments per file */ |
31 |
– |
|
32 |
|
#define FRAGBLK 64 /* number of fragments to allocate at a time */ |
33 |
|
|
34 |
|
int hdcachesize = CACHESIZE*1024*1024; /* target cache size (bytes) */ |
73 |
|
hdrelease(fd) /* stop tracking file fragments for some section */ |
74 |
|
register int fd; |
75 |
|
{ |
76 |
< |
if (fd >= nhdfrags || !hdfrag[fd].nlinks) |
76 |
> |
if (fd < 0 | fd >= nhdfrags || !hdfrag[fd].nlinks) |
77 |
|
return; |
78 |
|
if (!--hdfrag[fd].nlinks && hdfrag[fd].nfrags) { |
79 |
|
free((char *)hdfrag[fd].fi); |
207 |
|
((hdfrag[j].nfrags-1)/FRAGBLK + 1) ; |
208 |
|
} |
209 |
|
return(total); |
210 |
+ |
} |
211 |
+ |
|
212 |
+ |
|
213 |
+ |
long |
214 |
+ |
hdfilen(fd) /* return file length for fd */ |
215 |
+ |
int fd; |
216 |
+ |
{ |
217 |
+ |
long fpos, flen; |
218 |
+ |
|
219 |
+ |
if (fd < 0) |
220 |
+ |
return(-1); |
221 |
+ |
if (fd >= nhdfrags || !hdfrag[fd].nlinks) { |
222 |
+ |
if ((fpos = lseek(fd, 0L, 1)) < 0) |
223 |
+ |
return(-1); |
224 |
+ |
flen = lseek(fd, 0L, 2); |
225 |
+ |
lseek(fd, fpos, 0); |
226 |
+ |
return(flen); |
227 |
+ |
} |
228 |
+ |
return(hdfrag[fd].flen); |
229 |
|
} |
230 |
|
|
231 |
|
|