R_API RBuffer *r_buf_mmap (const char *file, int rw) {
RBuffer *b = r_buf_new ();
b->mmap = r_file_mmap (file, rw);
if (b->mmap && b->mmap->len>0) {
b->buf = b->mmap->buf;
b->length = b->mmap->len;
} else {
r_buf_free (b);
return NULL; /* we just freed b, don't return it */
}
return b;
}
R_API RBuffer *r_buf_mmap (const char *file, int flags) {
int rw = flags&R_IO_WRITE ? R_TRUE : R_FALSE;
RBuffer *b = r_buf_new ();
if (!b) return NULL;
b->mmap = r_file_mmap (file, rw, 0);
if (b->mmap) {
b->buf = b->mmap->buf;
b->length = b->mmap->len;
if (b->length == 0) b->empty = 1;
return b;
}
r_buf_free (b);
return NULL; /* we just freed b, don't return it */
}
static int check(RBin *bin) {
ut8 *h, buf[4];
int off, ret = false;
RMmap *m = r_file_mmap (bin->file, false, 0);
if (!m || !m->buf) {
r_file_mmap_free (m);
return false;
}
h = m->buf;
if (m->len >= 0x300 && !memcmp (h, "\xca\xfe\xba\xbe", 4)) {
// XXX assuming BE
off = r_read_at_be32 (h, 4 * sizeof (int));
if (off > 0 && off < m->len) {
memcpy (buf, h + off, 4);
if (!memcmp (buf, "\xce\xfa\xed\xfe", 4) ||
!memcmp (buf, "\xfe\xed\xfa\xce", 4) ||
!memcmp (buf, "\xfe\xed\xfa\xcf", 4) ||
!memcmp (buf, "\xcf\xfa\xed\xfe", 4))
ret = true;
}
}
r_file_mmap_free (m);
return ret;
}
static int check(RBin *bin) {
ut8 *h, buf[4];
int off, ret = R_FALSE;
RMmap *m = r_file_mmap (bin->file, R_FALSE, 0);
if (!m || !m->buf) {
r_file_mmap_free (m);
return R_FALSE;
}
h = m->buf;
if (m->len>=0x300 && !memcmp (h, "\xca\xfe\xba\xbe", 4)) {
memcpy (&off, h+4*sizeof (int), sizeof (int));
r_mem_copyendian ((ut8*)&off, (ut8*)&off, sizeof(int), !LIL_ENDIAN);
if (off > 0 && off < m->len) {
memcpy (buf, h+off, 4);
if (!memcmp (buf, "\xce\xfa\xed\xfe", 4) ||
!memcmp (buf, "\xfe\xed\xfa\xce", 4) ||
!memcmp (buf, "\xfe\xed\xfa\xcf", 4) ||
!memcmp (buf, "\xcf\xfa\xed\xfe", 4))
ret = R_TRUE;
}
}
r_file_mmap_free (m);
return ret;
}