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37 lines
962 B
C
37 lines
962 B
C
20 years ago
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#include <iob_internal.h>
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int64 iob_write(int64 s,io_batch* b,io_write_callback cb) {
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iob_entry* e,* last;
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int64 total,sent;
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long i;
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int thatsit;
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if (b->bytesleft==0) return 0;
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last=(iob_entry*)(((char*)array_start(&b->b))+array_bytes(&b->b));
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total=0;
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if (!(e=array_get(&b->b,sizeof(iob_entry),b->next)))
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return -3; /* can't happen error */
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thatsit=0;
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for (i=0; e+i<last; ++i) {
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if (!e[i].n) continue;
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if (e[i].type==FROMFILE || e[i].type==FROMFILE_CLOSE)
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sent=io_mmapwritefile(s,e[i].fd,e[i].offset,e[i].n,cb);
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else
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sent=cb(s,e[i].buf+e[i].offset,e[i].n);
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if (sent > e[i].n) sent=e[i].n; /* can't happen */
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thatsit=(sent != e[i].n);
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if (sent==-1 && errno!=EAGAIN)
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sent=-3;
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if (sent>0) {
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e[i].offset+=sent;
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e[i].n-=sent;
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total+=sent;
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} else
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return total?total:sent;
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if (thatsit) break;
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}
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if (total == b->bytesleft)
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iob_reset(b);
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return total;
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}
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