| rsc | b2cfc4e | 2003-09-30 17:47:41 +0000 | [diff] [blame] | 1 | #include "lib9.h" |
| 2 | #include <bio.h> |
| 3 | |
| 4 | long |
| 5 | Bwrite(Biobuf *bp, void *ap, long count) |
| 6 | { |
| 7 | long c; |
| 8 | unsigned char *p; |
| 9 | int i, n, oc; |
| 10 | |
| 11 | p = ap; |
| 12 | c = count; |
| 13 | oc = bp->ocount; |
| 14 | |
| 15 | while(c > 0) { |
| 16 | n = -oc; |
| 17 | if(n > c) |
| 18 | n = c; |
| 19 | if(n == 0) { |
| 20 | if(bp->state != Bwactive) |
| 21 | return Beof; |
| 22 | i = write(bp->fid, bp->bbuf, bp->bsize); |
| 23 | if(i != bp->bsize) { |
| 24 | bp->state = Binactive; |
| 25 | return Beof; |
| 26 | } |
| 27 | bp->offset += i; |
| 28 | oc = -bp->bsize; |
| 29 | continue; |
| 30 | } |
| 31 | memmove(bp->ebuf+oc, p, n); |
| 32 | oc += n; |
| 33 | c -= n; |
| 34 | p += n; |
| 35 | } |
| 36 | bp->ocount = oc; |
| 37 | return count-c; |
| 38 | } |
