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/* ISC license. */
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <skalibs/error.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/uint32.h>
#include <skalibs/cdb.h>
int cdb_read (struct cdb *c, char *buf, unsigned int len, uint32_t pos)
{
if (c->map)
{
if ((pos > c->size) || (c->size - pos < len)) return (errno = EPROTO, -1) ;
memcpy(buf, c->map + pos, len) ;
}
else
{
if (lseek(c->fd, pos, SEEK_SET) < 0) return -1 ;
if (allread(c->fd, buf, len) < len) return -1 ;
}
return 0 ;
}
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