| 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 |
|
|
