- if (src->foff + size > src->memsize)
- return -1;
- memcpy(dest, src->mem + src->foff, size);
- src->foff += size;
- return 0;
-}
-
-struct lbx_state *lbx_mopen(void *_mem, size_t size, const char *name)
-{
- struct lbx_state *new = NULL;
- struct lbx_state tmp = { .mem = _mem, .memsize = size };
- uint16_t nfiles, version;
- uint32_t magic;
-
- if (_lbx_memcpy(&nfiles, &tmp, sizeof nfiles) == -1) goto eof;
- if (_lbx_memcpy(&magic, &tmp, sizeof magic) == -1) goto eof;
- if (_lbx_memcpy(&version, &tmp, sizeof version) == -1) goto eof;
-
- nfiles = letohs(nfiles);
- magic = letohl(magic);
- version = letohs(version);
-
- if (magic != LBX_MAGIC) {
- lbx_errno = LBX_EMAGIC;
- return NULL;
- }
-
- new = malloc(sizeof *new + (nfiles+1)*(sizeof *new->offsets));
- if (!new) {
- lbx_errno = -errno;
- return NULL;
- }
-
- *new = (struct lbx_state){
- .name = name,
- .nfiles = nfiles,
- .mem = _mem,
- .memsize = size,
- .foff = tmp.foff,
- };
-
- if (_lbx_memcpy(new->offsets, new, (nfiles+1)*(sizeof *new->offsets)))
- goto eof;
-
- return new;
-eof:
- free(new);
- lbx_errno = LBX_EEOF;
- return NULL;