mirror of
https://github.com/riptidewave93/UNVR-NAS.git
synced 2025-02-14 19:41:55 +00:00
58ce1fb99f
* Fixup fan control so it works on UNVR * Add LED integration work for UNVR * Rename our mtd-ro kernel module dir * Fixup shortnames in ubnteeprom
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
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* Copyright (C) 2024 Chris Blake <chrisrblake93@gmail.com>
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*
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* Inspired by mtd-rw: https://github.com/jclehner/mtd-rw/tree/master
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/mtd/mtd.h>
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#include <linux/err.h>
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#ifndef MODULE
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#error "uvnt-mtd-lock must be compiled as a module."
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#endif
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#define MOD_INFO KERN_INFO "ubnt-mtd-lock: "
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#define MOD_ERR KERN_ERR "ubnt-mtd-lock: "
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static int set_readonly(unsigned n)
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{
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struct mtd_info *mtd = get_mtd_device(NULL, n);
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int err;
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if (IS_ERR(mtd)) {
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if (PTR_ERR(mtd) != -ENODEV) {
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printk(MOD_ERR "error probing mtd%d %ld\n", n, PTR_ERR(mtd));
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}
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return PTR_ERR(mtd);
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}
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err = -EEXIST;
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if (mtd->flags & MTD_WRITEABLE) {
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printk(MOD_INFO "setting mtd%d \"%s\" readonly\n", n, mtd->name);
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mtd->flags &= ~MTD_WRITEABLE;
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err = 0;
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}
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put_mtd_device(mtd);
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return err;
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}
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int ubnt_mtd_lock_init(void)
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{
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int i, err;
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/* For all MTD partitions, go RO. Assume <15 for UNVR/UNVRPRO, as UNVR OG has 10 */
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for (i = 0; i < 15; ++i) {
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err = set_readonly(i);
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if (err == -ENODEV) {
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break;
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}
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}
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return 0;
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}
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void ubnt_mtd_lock_exit(void)
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{
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/* Do nothing, we wanna keep mtd locked!!! */
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}
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module_init(ubnt_mtd_lock_init);
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module_exit(ubnt_mtd_lock_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Chris Blake <chrisrblake93@gmail.com>");
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MODULE_DESCRIPTION("Unifi UNVR/UNVRPRO driver to force MTD partitions RO");
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MODULE_VERSION("1");
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