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b1ab7e4b2a
This factors out the part of the vfs_setxattr function that performs the setting of the xattr and its notification. This is needed so the SELinux implementation of inode_setsecctx can handle the setting of the xattr while maintaining the proper separation of layers. Signed-off-by: David P. Quigley <dpquigl@tycho.nsa.gov> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/*
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File: linux/xattr.h
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Extended attributes handling.
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Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
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Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved.
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Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
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*/
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#ifndef _LINUX_XATTR_H
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#define _LINUX_XATTR_H
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#define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
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#define XATTR_REPLACE 0x2 /* set value, fail if attr does not exist */
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#ifdef __KERNEL__
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#include <linux/types.h>
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/* Namespaces */
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#define XATTR_OS2_PREFIX "os2."
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#define XATTR_OS2_PREFIX_LEN (sizeof (XATTR_OS2_PREFIX) - 1)
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#define XATTR_SECURITY_PREFIX "security."
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#define XATTR_SECURITY_PREFIX_LEN (sizeof (XATTR_SECURITY_PREFIX) - 1)
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#define XATTR_SYSTEM_PREFIX "system."
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#define XATTR_SYSTEM_PREFIX_LEN (sizeof (XATTR_SYSTEM_PREFIX) - 1)
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#define XATTR_TRUSTED_PREFIX "trusted."
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#define XATTR_TRUSTED_PREFIX_LEN (sizeof (XATTR_TRUSTED_PREFIX) - 1)
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#define XATTR_USER_PREFIX "user."
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#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
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struct inode;
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struct dentry;
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struct xattr_handler {
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char *prefix;
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size_t (*list)(struct inode *inode, char *list, size_t list_size,
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const char *name, size_t name_len);
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int (*get)(struct inode *inode, const char *name, void *buffer,
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size_t size);
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int (*set)(struct inode *inode, const char *name, const void *buffer,
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size_t size, int flags);
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};
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ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
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ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
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ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
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int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
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int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
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int vfs_removexattr(struct dentry *, const char *);
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ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size);
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ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
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int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags);
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int generic_removexattr(struct dentry *dentry, const char *name);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_XATTR_H */
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