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f4ae4081e5
The interface for fcntl expects the argument passed for the command F_DIRNOTIFY to be of type int. The current code wrongly treats it as a long. In order to avoid access to undefined bits, we should explicitly cast the argument to int. Cc: Jan Kara <jack@suse.cz> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Jeff Layton <jlayton@kernel.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Kevin Brodsky <Kevin.Brodsky@arm.com> Cc: Vincenzo Frascino <Vincenzo.Frascino@arm.com> Cc: Szabolcs Nagy <Szabolcs.Nagy@arm.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: David Laight <David.Laight@ACULAB.com> Cc: Mark Rutland <Mark.Rutland@arm.com> Cc: linux-fsdevel@vger.kernel.org Cc: linux-morello@op-lists.linaro.org Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Luca Vizzarro <Luca.Vizzarro@arm.com> Message-Id: <20230414152459.816046-6-Luca.Vizzarro@arm.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
50 lines
1,012 B
C
50 lines
1,012 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_DNOTIFY_H
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#define _LINUX_DNOTIFY_H
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/*
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* Directory notification for Linux
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*
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* Copyright (C) 2000,2002 Stephen Rothwell
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*/
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#include <linux/fs.h>
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struct dnotify_struct {
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struct dnotify_struct * dn_next;
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__u32 dn_mask;
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int dn_fd;
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struct file * dn_filp;
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fl_owner_t dn_owner;
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_DNOTIFY
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#define DNOTIFY_ALL_EVENTS (FS_DELETE | FS_DELETE_CHILD |\
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FS_MODIFY | FS_MODIFY_CHILD |\
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FS_ACCESS | FS_ACCESS_CHILD |\
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FS_ATTRIB | FS_ATTRIB_CHILD |\
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FS_CREATE | FS_RENAME |\
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FS_MOVED_FROM | FS_MOVED_TO)
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extern void dnotify_flush(struct file *, fl_owner_t);
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extern int fcntl_dirnotify(int, struct file *, unsigned int);
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#else
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static inline void dnotify_flush(struct file *filp, fl_owner_t id)
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{
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}
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static inline int fcntl_dirnotify(int fd, struct file *filp, unsigned int arg)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_DNOTIFY */
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#endif /* __KERNEL __ */
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#endif /* _LINUX_DNOTIFY_H */
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