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Commit 7d8d2ceb authored by Amir Samuelov's avatar Amir Samuelov
Browse files

platform: msm: add Per-File-Tagger (PFT) driver 



This driver is part of the Per-File-Encryption (PFE) feature.
It allows to tag enterprise files and encrypt them
while keeping the user private files untagged and plain text.

Change-Id: I2ba8bffb2a8815991dc3994a1f94a0c52b937a25
Signed-off-by: default avatarNir Ofry <nofry@codeaurora.org>
Signed-off-by: default avatarAmir Samuelov <amirs@codeaurora.org>
parent 77a1f98a

drivers/platform/msm/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -159,6 +159,16 @@ config QCA1530 
	  To compile this driver as a module, choose M here: the module

	  will be called qca1530.



config PFT

	bool "Per-File-Tagger driver"

	default n

	help

		This driver is used for tagging enterprise files.

		It is part of the Per-File-Encryption (PFE) feature.

		The driver is tagging files when created by

		registered application.

		Tagged files are encrypted using the dm-req-crypt driver.



config MSM_SPSS

	tristate "MSM SPSS driver"

	default n

drivers/platform/msm/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
#



ccflags-y += -Idrivers/misc/



ccflags-y += -Isecurity/selinux -Isecurity/selinux/include



obj-$(CONFIG_MSM_BUS_SCALING) += msm_bus/

obj-$(CONFIG_BUS_TOPOLOGY_ADHOC) += msm_bus/
@@ -19,6 +19,7 @@ obj-$(CONFIG_MSM_AVTIMER) += avtimer.o 
obj-$(CONFIG_SSM) += ssm.o

obj-$(CONFIG_QPNP_REVID) += qpnp-revid.o

obj-$(CONFIG_QPNP_USB_DETECT) += qpnp-usbdetect.o

obj-$(CONFIG_PFT) += pft.o

obj-$(CONFIG_QCA1530) += qca1530.o

obj-$(CONFIG_KLM) += msm_klmd.o

obj-$(CONFIG_MSM_SPSS) += spss.o

drivers/platform/msm/pft.c

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+1758 −0

File added.

Preview size limit exceeded, changes collapsed.

include/linux/pft.h

0 → 100644
+92 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */



#ifndef PFT_H_

#define PFT_H_



#include <linux/types.h>

#include <linux/fs.h>



#ifdef CONFIG_PFT



/* dm-req-crypt API */

int pft_get_key_index(struct inode *inode, u32 *key_index,

		      bool *is_encrypted, bool *is_inplace);



/* block layer API */

bool pft_allow_merge_bio(struct bio *bio1, struct bio *bio2);



/* --- security hooks , called from selinux --- */

int pft_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);



int pft_inode_post_create(struct inode *dir, struct dentry *dentry,

			  umode_t mode);



int pft_file_open(struct file *filp, const struct cred *cred);



int pft_file_permission(struct file *file, int mask);



int pft_file_close(struct file *filp);



int pft_inode_unlink(struct inode *dir, struct dentry *dentry);



int pft_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,

		    dev_t dev);



int pft_inode_rename(struct inode *inode, struct dentry *dentry,

		     struct inode *new_inode, struct dentry *new_dentry);



int pft_inode_set_xattr(struct dentry *dentry, const char *name);





#else

static inline int pft_get_key_index(struct inode *inode, u32 *key_index,

				    bool *is_encrypted, bool *is_inplace)

{ return -ENODEV; }



static inline bool pft_allow_merge_bio(struct bio *bio1, struct bio *bio2)

{ return true; }



static inline int pft_file_permission(struct file *file, int mask)

{ return 0; }



static inline int pft_inode_create(

	struct inode *dir, struct dentry *dentry, umode_t mode)

{ return 0; }



static inline int pft_inode_post_create(

	struct inode *dir, struct dentry *dentry, umode_t mode)

{ return 0; }



static inline int pft_file_open(struct file *filp, const struct cred *cred)

{ return 0; }



static inline int pft_file_close(struct file *filp)

{ return 0; }



static inline int pft_inode_unlink(struct inode *dir, struct dentry *dentry)

{ return 0; }



static inline int pft_inode_mknod(struct inode *dir, struct dentry *dentry,

				  umode_t mode, dev_t dev)

{ return 0; }



static inline int pft_inode_rename(struct inode *inode, struct dentry *dentry,

		     struct inode *new_inode, struct dentry *new_dentry)

{ return 0; }



static inline int pft_inode_set_xattr(struct dentry *dentry, const char *name)

{ return 0; }



#endif /* CONFIG_PFT */



#endif /* PFT_H */

include/uapi/linux/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -292,6 +292,7 @@ header-y += msm_audio_sbc.h 
header-y += msm_ipc.h

header-y += msm_charm.h

header-y += msm_rmnet.h

header-y += msm_pft.h

header-y += rmnet_data.h

header-y += mtio.h

header-y += n_r3964.h