diff options
Diffstat (limited to 'fs/efivarfs')
| -rw-r--r-- | fs/efivarfs/Kconfig | 1 | ||||
| -rw-r--r-- | fs/efivarfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/efivarfs/file.c | 31 | ||||
| -rw-r--r-- | fs/efivarfs/inode.c | 5 | ||||
| -rw-r--r-- | fs/efivarfs/internal.h | 5 | ||||
| -rw-r--r-- | fs/efivarfs/super.c | 5 |
6 files changed, 23 insertions, 25 deletions
diff --git a/fs/efivarfs/Kconfig b/fs/efivarfs/Kconfig index c2499ef174a2..edec8a19c894 100644 --- a/fs/efivarfs/Kconfig +++ b/fs/efivarfs/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only config EFIVAR_FS tristate "EFI Variable filesystem" depends on EFI diff --git a/fs/efivarfs/Makefile b/fs/efivarfs/Makefile index 955d478177d5..0b1c5e63eb71 100644 --- a/fs/efivarfs/Makefile +++ b/fs/efivarfs/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # Makefile for the efivarfs filesystem # diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c index 8e568428c88b..e9e27a271af0 100644 --- a/fs/efivarfs/file.c +++ b/fs/efivarfs/file.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Red Hat, Inc. * Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/efi.h> @@ -110,16 +107,22 @@ out_free: return size; } -static int -efivarfs_ioc_getxflags(struct file *file, void __user *arg) +static inline unsigned int efivarfs_getflags(struct inode *inode) { - struct inode *inode = file->f_mapping->host; unsigned int i_flags; unsigned int flags = 0; i_flags = inode->i_flags; if (i_flags & S_IMMUTABLE) flags |= FS_IMMUTABLE_FL; + return flags; +} + +static int +efivarfs_ioc_getxflags(struct file *file, void __user *arg) +{ + struct inode *inode = file->f_mapping->host; + unsigned int flags = efivarfs_getflags(inode); if (copy_to_user(arg, &flags, sizeof(flags))) return -EFAULT; @@ -132,6 +135,7 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg) struct inode *inode = file->f_mapping->host; unsigned int flags; unsigned int i_flags = 0; + unsigned int oldflags = efivarfs_getflags(inode); int error; if (!inode_owner_or_capable(inode)) @@ -143,9 +147,6 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg) if (flags & ~FS_IMMUTABLE_FL) return -EOPNOTSUPP; - if (!capable(CAP_LINUX_IMMUTABLE)) - return -EPERM; - if (flags & FS_IMMUTABLE_FL) i_flags |= S_IMMUTABLE; @@ -155,12 +156,16 @@ efivarfs_ioc_setxflags(struct file *file, void __user *arg) return error; inode_lock(inode); + + error = vfs_ioc_setflags_prepare(inode, oldflags, flags); + if (error) + goto out; + inode_set_flags(inode, i_flags, S_IMMUTABLE); +out: inode_unlock(inode); - mnt_drop_write_file(file); - - return 0; + return error; } static long diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c index 8c6ab6c95727..96c0c86f3fff 100644 --- a/fs/efivarfs/inode.c +++ b/fs/efivarfs/inode.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Red Hat, Inc. * Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/efi.h> diff --git a/fs/efivarfs/internal.h b/fs/efivarfs/internal.h index b4505188e799..30ae44cb7453 100644 --- a/fs/efivarfs/internal.h +++ b/fs/efivarfs/internal.h @@ -1,10 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 Red Hat, Inc. * Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef EFIVAR_FS_INTERNAL_H #define EFIVAR_FS_INTERNAL_H diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index 124f1aa9ab03..fa4f6447ddad 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Red Hat, Inc. * Copyright (C) 2012 Jeremy Kerr <jeremy.kerr@canonical.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/ctype.h> |