ot_u8 GFB_chmod_su( ot_u8 id, ot_u8 mod ) {
# if ( GFB_HEAP_BYTES > 0 )
return vl_chmod(VL_GFB_BLOCKID, id, mod, NULL);
# else
return ~0;
# endif
}
ot_int sub_fileperms( alp_tmpl* alp, id_tmpl* user_id, ot_u8 respond, ot_u8 cmd_in, ot_int data_in ) {
ot_int data_out = 0;
vlBLOCK file_block = (vlBLOCK)((cmd_in >> 4) & 0x07);
ot_u8 file_mod = ((cmd_in & 0x02) ? VL_ACCESS_W : VL_ACCESS_R);
/// Loop through all the listed file ids and process permissions.
while ((data_in > 0) && sub_qnotfull(respond, 2, alp->outq)) {
ot_u8 file_id = q_readbyte(alp->inq);
ot_bool allow_write = respond;
vaddr header;
data_in--; // one for the file id
if (file_mod == VL_ACCESS_W ) {
/// run the chmod and return the error code (0 is no error)
data_in--; // two for the new mod
file_mod = vl_chmod(file_block, file_id, q_readbyte(alp->inq), user_id);
}
else if (allow_write) {
/// Get the header address and return mod (offset 5). The root user
/// (NULL) is used because this is only for reading filemod.
/// Note: This is a hack that is extremely optimized for speed
allow_write = (ot_bool)(vl_getheader_vaddr(&header, file_block, file_id, \
VL_ACCESS_R, NULL) == 0);
if (allow_write) {
Twobytes filemod;
filemod.ushort = vworm_read(header + 4); //shortcut to idmod, hack-ish but fast
file_mod = filemod.ubyte[1];
}
}
if (allow_write) {
/// load the data onto the output, if response enabled
q_writebyte(alp->outq, file_id);
q_writebyte(alp->outq, file_mod);
data_out += 2;
}
}
/// return number of bytes put onto the output (always x2)
//alp->BOOKMARK_IN = (void*)sub_testchunk(data_in);
return data_out;
}
ot_u8 ISF_chmod_su( ot_u8 id, ot_u8 mod ) {
return vl_chmod(VL_ISFS_BLOCKID, id, mod, NULL);
}
