diff options
Diffstat (limited to 'fs/efivarfs/inode.c')
| -rw-r--r-- | fs/efivarfs/inode.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c index 14e2947975fd..939e5e242b98 100644 --- a/fs/efivarfs/inode.c +++ b/fs/efivarfs/inode.c @@ -10,9 +10,12 @@ #include <linux/kmemleak.h> #include <linux/slab.h> #include <linux/uuid.h> +#include <linux/fileattr.h> #include "internal.h" +static const struct inode_operations efivarfs_file_inode_operations; + struct inode *efivarfs_get_inode(struct super_block *sb, const struct inode *dir, int mode, dev_t dev, bool is_removable) @@ -26,6 +29,7 @@ struct inode *efivarfs_get_inode(struct super_block *sb, inode->i_flags = is_removable ? 0 : S_IMMUTABLE; switch (mode & S_IFMT) { case S_IFREG: + inode->i_op = &efivarfs_file_inode_operations; inode->i_fop = &efivarfs_file_operations; break; case S_IFDIR: @@ -138,3 +142,43 @@ const struct inode_operations efivarfs_dir_inode_operations = { .unlink = efivarfs_unlink, .create = efivarfs_create, }; + +static int +efivarfs_fileattr_get(struct dentry *dentry, struct fileattr *fa) +{ + unsigned int i_flags; + unsigned int flags = 0; + + i_flags = d_inode(dentry)->i_flags; + if (i_flags & S_IMMUTABLE) + flags |= FS_IMMUTABLE_FL; + + fileattr_fill_flags(fa, flags); + + return 0; +} + +static int +efivarfs_fileattr_set(struct user_namespace *mnt_userns, + struct dentry *dentry, struct fileattr *fa) +{ + unsigned int i_flags = 0; + + if (fileattr_has_fsx(fa)) + return -EOPNOTSUPP; + + if (fa->flags & ~FS_IMMUTABLE_FL) + return -EOPNOTSUPP; + + if (fa->flags & FS_IMMUTABLE_FL) + i_flags |= S_IMMUTABLE; + + inode_set_flags(d_inode(dentry), i_flags, S_IMMUTABLE); + + return 0; +} + +static const struct inode_operations efivarfs_file_inode_operations = { + .fileattr_get = efivarfs_fileattr_get, + .fileattr_set = efivarfs_fileattr_set, +}; |