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Commit 0e1a43c7 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

userns: Convert hpfs to use kuid and kgid where appropriate 



Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Acked-by: default avatarSerge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
parent 2f2f43d3

fs/hpfs/hpfs_fn.h

+2 −2
Original line number Diff line number Diff line
@@ -63,8 +63,8 @@ struct hpfs_sb_info { 
	unsigned sb_dmap;		/* sector number of dnode bit map */

	unsigned sb_n_free;		/* free blocks for statfs, or -1 */

	unsigned sb_n_free_dnodes;	/* free dnodes for statfs, or -1 */

	uid_t sb_uid;			/* uid from mount options */

	gid_t sb_gid;			/* gid from mount options */

	kuid_t sb_uid;			/* uid from mount options */

	kgid_t sb_gid;			/* gid from mount options */

	umode_t sb_mode;		/* mode from mount options */

	unsigned sb_eas : 2;		/* eas: 0-ignore, 1-ro, 2-rw */

	unsigned sb_err : 2;		/* on errs: 0-cont, 1-ro, 2-panic */

fs/hpfs/inode.c

+11 −8
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 */



#include <linux/slab.h>

#include <linux/user_namespace.h>

#include "hpfs_fn.h"



void hpfs_init_inode(struct inode *i)
@@ -60,14 +61,14 @@ void hpfs_read_inode(struct inode *i) 
	if (hpfs_sb(i->i_sb)->sb_eas) {

		if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {

			if (ea_size == 2) {

				i->i_uid = le16_to_cpu(*(__le16*)ea);

				i_uid_write(i, le16_to_cpu(*(__le16*)ea));

				hpfs_inode->i_ea_uid = 1;

			}

			kfree(ea);

		}

		if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {

			if (ea_size == 2) {

				i->i_gid = le16_to_cpu(*(__le16*)ea);

				i_gid_write(i, le16_to_cpu(*(__le16*)ea));

				hpfs_inode->i_ea_gid = 1;

			}

			kfree(ea);
@@ -149,13 +150,13 @@ static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode) 
		hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 stuctures", i->i_ino);

	} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {

		__le32 ea;

		if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {

			ea = cpu_to_le32(i->i_uid);

		if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {

			ea = cpu_to_le32(i_uid_read(i));

			hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);

			hpfs_inode->i_ea_uid = 1;

		}

		if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {

			ea = cpu_to_le32(i->i_gid);

		if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {

			ea = cpu_to_le32(i_gid_read(i));

			hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);

			hpfs_inode->i_ea_gid = 1;

		}
@@ -261,9 +262,11 @@ int hpfs_setattr(struct dentry *dentry, struct iattr *attr) 
	hpfs_lock(inode->i_sb);

	if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)

		goto out_unlock;

	if ((attr->ia_valid & ATTR_UID) && attr->ia_uid >= 0x10000)

	if ((attr->ia_valid & ATTR_UID) &&

	    from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)

		goto out_unlock;

	if ((attr->ia_valid & ATTR_GID) && attr->ia_gid >= 0x10000)

	if ((attr->ia_valid & ATTR_GID) &&

	    from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)

		goto out_unlock;

	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)

		goto out_unlock;

fs/hpfs/namei.c

+4 −4
Original line number Diff line number Diff line
@@ -91,8 +91,8 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 
	inc_nlink(dir);

	insert_inode_hash(result);



	if (result->i_uid != current_fsuid() ||

	    result->i_gid != current_fsgid() ||

	if (!uid_eq(result->i_uid, current_fsuid()) ||

	    !gid_eq(result->i_gid, current_fsgid()) ||

	    result->i_mode != (mode | S_IFDIR)) {

		result->i_uid = current_fsuid();

		result->i_gid = current_fsgid();
@@ -179,8 +179,8 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, umode_t mode, b 


	insert_inode_hash(result);



	if (result->i_uid != current_fsuid() ||

	    result->i_gid != current_fsgid() ||

	if (!uid_eq(result->i_uid, current_fsuid()) ||

	    !gid_eq(result->i_gid, current_fsgid()) ||

	    result->i_mode != (mode | S_IFREG)) {

		result->i_uid = current_fsuid();

		result->i_gid = current_fsgid();

fs/hpfs/super.c

+11 −7
Original line number Diff line number Diff line
@@ -251,7 +251,7 @@ static const match_table_t tokens = { 
	{Opt_err, NULL},

};



static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask,

static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask,

		      int *lowercase, int *eas, int *chk, int *errs,

		      int *chkdsk, int *timeshift)

{
@@ -276,12 +276,16 @@ static int parse_opts(char *opts, uid_t *uid, gid_t *gid, umode_t *umask, 
		case Opt_uid:

			if (match_int(args, &option))

				return 0;

			*uid = option;

			*uid = make_kuid(current_user_ns(), option);

			if (!uid_valid(*uid))

				return 0;

			break;

		case Opt_gid:

			if (match_int(args, &option))

				return 0;

			*gid = option;

			*gid = make_kgid(current_user_ns(), option);

			if (!gid_valid(*gid))

				return 0;

			break;

		case Opt_umask:

			if (match_octal(args, &option))
@@ -378,8 +382,8 @@ HPFS filesystem options:\n\ 


static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)

{

	uid_t uid;

	gid_t gid;

	kuid_t uid;

	kgid_t gid;

	umode_t umask;

	int lowercase, eas, chk, errs, chkdsk, timeshift;

	int o;
@@ -455,8 +459,8 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) 
	struct hpfs_sb_info *sbi;

	struct inode *root;



	uid_t uid;

	gid_t gid;

	kuid_t uid;

	kgid_t gid;

	umode_t umask;

	int lowercase, eas, chk, errs, chkdsk, timeshift;

init/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -935,7 +935,6 @@ config UIDGID_CONVERTED 
	depends on CODA_FS = n

	depends on FUSE_FS = n

	depends on GFS2_FS = n

	depends on HPFS_FS = n

	depends on JFFS2_FS = n

	depends on JFS_FS = n

	depends on NCP_FS = n