inoptr newfile(inoptr pino, char *name)
{
inoptr nindex;
uint8_t j;
/* First see if parent is writeable */
if(!(getperm(pino) & OTH_WR))
goto nogood;
if(!(nindex = i_open(pino->c_dev, 0)))
goto nogood;
/* BUG FIX: user/group setting was missing SN */
nindex->c_node.i_uid = udata.u_euid;
nindex->c_node.i_gid = udata.u_egid;
nindex->c_node.i_mode = F_REG; /* For the time being */
nindex->c_node.i_nlink = 1;
nindex->c_node.i_size = 0;
for(j=0; j <20; j++)
nindex->c_node.i_addr[j] = 0;
wr_inode(nindex);
if(!ch_link(pino, "", name, nindex)) {
i_deref(nindex);
goto nogood;
}
i_deref(pino);
return nindex;
nogood:
i_deref(pino);
return NULLINODE;
}
arg_t _link(void)
{
inoptr ino;
inoptr ino2;
inoptr parent2;
char fname[FILENAME_LEN + 1];
if (!(ino = n_open(name1, NULLINOPTR)))
return (-1);
if (getmode(ino) == F_DIR && esuper())
goto nogood;
if (ino->c_node.i_nlink == 0xFFFF) {
udata.u_error = EMLINK;
goto nogood;
}
/* Make sure file2 doesn't exist, and get its parent */
if ((ino2 = n_open(name2, &parent2)) != NULL) {
i_deref(ino2);
i_deref(parent2);
udata.u_error = EEXIST;
goto nogood;
}
if (!parent2)
goto nogood;
if (ino->c_dev != parent2->c_dev) {
i_deref(parent2);
udata.u_error = EXDEV;
goto nogood;
}
filename(name2, fname);
if (!ch_link(parent2, "", fname, ino)) {
i_deref(parent2);
goto nogood;
}
/* Update the link count. */
++ino->c_node.i_nlink;
wr_inode(ino);
setftime(ino, C_TIME);
i_deref(parent2);
i_deref(ino);
return 0;
nogood:
i_deref(ino);
return -1;
}
/* Helper for the bits shared with rename */
int16_t unlinki(inoptr ino, inoptr pino, char *fname)
{
if (getmode(ino) == F_DIR) {
udata.u_error = EISDIR;
return -1;
}
/* Remove the directory entry (ch_link checks perms) */
if (!ch_link(pino, fname, "", NULLINODE))
return -1;
/* Decrease the link count of the inode */
if (!(ino->c_node.i_nlink--)) {
ino->c_node.i_nlink += 2;
kprintf("_unlink: bad nlink\n");
}
setftime(ino, C_TIME);
return (0);
}
