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Commit a1bd120d authored by Dmitry Monakhov's avatar Dmitry Monakhov Committed by Al Viro
Browse files

vfs: Add inode uid,gid,mode init helper 



Signed-off-by: default avatarDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 52957fe1

fs/inode.c

+20 −0
Original line number Diff line number Diff line
@@ -1606,3 +1606,23 @@ void init_special_inode(struct inode *inode, umode_t mode, dev_t rdev) 
				  inode->i_ino);

}

EXPORT_SYMBOL(init_special_inode);



/**

 * Init uid,gid,mode for new inode according to posix standards

 * @inode: New inode

 * @dir: Directory inode

 * @mode: mode of the new inode

 */

void inode_init_owner(struct inode *inode, const struct inode *dir,

			mode_t mode)

{

	inode->i_uid = current_fsuid();

	if (dir && dir->i_mode & S_ISGID) {

		inode->i_gid = dir->i_gid;

		if (S_ISDIR(mode))

			mode |= S_ISGID;

	} else

		inode->i_gid = current_fsgid();

	inode->i_mode = mode;

}

EXPORT_SYMBOL(inode_init_owner);

include/linux/fs.h

+2 −1
Original line number Diff line number Diff line
@@ -1428,7 +1428,8 @@ extern void dentry_unhash(struct dentry *dentry); 
 * VFS file helper functions.

 */

extern int file_permission(struct file *, int);



extern void inode_init_owner(struct inode *inode, const struct inode *dir,

			mode_t mode);

/*

 * VFS FS_IOC_FIEMAP helper definitions.

 */