Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

static
long
iowritev(int fd, IOchunk *io, int nio, vlong offset)
{
        int i;
        long tot;
        char *buf, *p;

        tot = 0;
        for(i=0; i<nio; i++)
                tot += io[i].len;
        buf = malloc(tot);
        if(buf == nil)
                return -1;

        p = buf;
        for(i=0; i<nio; i++){
                memmove(p, io->addr, io->len);
                p += io->len;
                io++;
        }

        tot = pwrite(fd, buf, tot, offset);

        free(buf);
        return tot;
}

long
writev(int fd, IOchunk *io, int nio)
{
        return iowritev(fd, io, nio, -1LL);
}

long
pwritev(int fd, IOchunk *io, int nio, vlong off)
{
        return iowritev(fd, io, nio, off);
}