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#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include "ibuf.h"
/** Set the effective read position. */
int ibuf_seek(ibuf* in, unsigned offset)
{
iobuf* io;
unsigned buf_start;
io = &(in->io);
buf_start = io->offset - io->buflen;
if (offset >= buf_start && offset <= io->offset)
io->bufstart = offset - buf_start;
else {
if (lseek(io->fd, offset, SEEK_SET) != (off_t)offset)
IOBUF_SET_ERROR(io);
io->offset = offset;
io->buflen = 0;
io->bufstart = 0;
}
in->count = 0;
io->flags &= ~IOBUF_EOF;
return 1;
}
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