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Annotation of researchv9/libc/fio/fiowrite.c, revision 1.1.1.1

1.1       root        1: #define        FIO_IMP
                      2: #include       "fio.h"
                      3: #include       <libc.h>
                      4: 
                      5: Fwrite(fd, addr, nbytes)
                      6:        register char *addr;
                      7:        register long nbytes;
                      8: {
                      9:        register Fbuffer *f;
                     10:        register COUNT n;
                     11:        long nnbytes = nbytes;
                     12: 
                     13:        FIOSET(f, fd);
                     14:        f->end = 0;             /* mark as writing */
                     15:        n = &f->buf[FIOBSIZE] - f->next;
                     16:        if(nbytes < n) n = nbytes;
                     17:        memcpy(f->next, addr, n);
                     18:        f->next += n;
                     19:        nbytes -= n;
                     20:        addr += n;
                     21:        if(nbytes){
                     22:                F_flush(f, fd);
                     23:                while(nbytes >= FIOBSIZE){
                     24:                        if(write(fd, addr, (COUNT)FIOBSIZE) != FIOBSIZE)
                     25:                                return(-1L);
                     26:                        addr += FIOBSIZE;
                     27:                        nbytes -= FIOBSIZE;
                     28:                }
                     29:                memcpy(f->next = f->buf, addr, (COUNT)(n = nbytes));
                     30:                f->next += n;
                     31:        }
                     32:        return(nnbytes);
                     33: }

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