From 51db776a430edd7477a779be0dc5c6fef4a05884 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Wed, 7 Apr 2021 14:36:44 +0200 Subject: vfs: remove unused ioctl helpers Remove vfs_ioc_setflags_prepare(), vfs_ioc_fssetxattr_check() and simple_fill_fsxattr(), which are no longer used. Signed-off-by: Miklos Szeredi Reviewed-by: Darrick J. Wong --- fs/inode.c | 87 -------------------------------------------------------------- 1 file changed, 87 deletions(-) (limited to 'fs/inode.c') diff --git a/fs/inode.c b/fs/inode.c index a047ab306f9a..ae526fd9c0a4 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -12,7 +12,6 @@ #include #include #include -#include #include #include #include @@ -2314,89 +2313,3 @@ struct timespec64 current_time(struct inode *inode) return timestamp_truncate(now, inode); } EXPORT_SYMBOL(current_time); - -/* - * Generic function to check FS_IOC_SETFLAGS values and reject any invalid - * configurations. - * - * Note: the caller should be holding i_mutex, or else be sure that they have - * exclusive access to the inode structure. - */ -int vfs_ioc_setflags_prepare(struct inode *inode, unsigned int oldflags, - unsigned int flags) -{ - /* - * The IMMUTABLE and APPEND_ONLY flags can only be changed by - * the relevant capability. - * - * This test looks nicer. Thanks to Pauline Middelink - */ - if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL) && - !capable(CAP_LINUX_IMMUTABLE)) - return -EPERM; - - return fscrypt_prepare_setflags(inode, oldflags, flags); -} -EXPORT_SYMBOL(vfs_ioc_setflags_prepare); - -/* - * Generic function to check FS_IOC_FSSETXATTR values and reject any invalid - * configurations. - * - * Note: the caller should be holding i_mutex, or else be sure that they have - * exclusive access to the inode structure. - */ -int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa, - struct fsxattr *fa) -{ - /* - * Can't modify an immutable/append-only file unless we have - * appropriate permission. - */ - if ((old_fa->fsx_xflags ^ fa->fsx_xflags) & - (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND) && - !capable(CAP_LINUX_IMMUTABLE)) - return -EPERM; - - /* - * Project Quota ID state is only allowed to change from within the init - * namespace. Enforce that restriction only if we are trying to change - * the quota ID state. Everything else is allowed in user namespaces. - */ - if (current_user_ns() != &init_user_ns) { - if (old_fa->fsx_projid != fa->fsx_projid) - return -EINVAL; - if ((old_fa->fsx_xflags ^ fa->fsx_xflags) & - FS_XFLAG_PROJINHERIT) - return -EINVAL; - } - - /* Check extent size hints. */ - if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(inode->i_mode)) - return -EINVAL; - - if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && - !S_ISDIR(inode->i_mode)) - return -EINVAL; - - if ((fa->fsx_xflags & FS_XFLAG_COWEXTSIZE) && - !S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) - return -EINVAL; - - /* - * It is only valid to set the DAX flag on regular files and - * directories on filesystems. - */ - if ((fa->fsx_xflags & FS_XFLAG_DAX) && - !(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) - return -EINVAL; - - /* Extent size hints of zero turn off the flags. */ - if (fa->fsx_extsize == 0) - fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); - if (fa->fsx_cowextsize == 0) - fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE; - - return 0; -} -EXPORT_SYMBOL(vfs_ioc_fssetxattr_check); -- cgit v1.2.3