writebuf
if ((cc = writebuf(filesock, COMM_CHAIN, chain, chainsz)) == 0)
if (writebuf(filesock, COMM_CSR, csr, csrsz) < 0)
int writebuf(int, enum comm, const void *, size_t);
else if (writebuf(cfd, COMM_CSR, c.buf.buf, c.buf.sz) <= 0)
return writebuf(fd, comm, v, strlen(v));
memcpy(writebuf, &sblock, SBLOCKSIZE);
memcpy(iobuf, writebuf, SBLOCKSIZE);
memcpy(writebuf, fs, SBLOCKSIZE);
fsdup = (struct fs *)writebuf;
ffs_wtfs(fs->fs_sblockloc / sectorsize, SBLOCKSIZE, writebuf, fsopts);
SBLOCKSIZE, writebuf, fsopts);
char writebuf[FFS_MAXBSIZE];