diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/linux/xattr.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/linux/xattr.h')
-rw-r--r-- | kernel/include/linux/xattr.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/kernel/include/linux/xattr.h b/kernel/include/linux/xattr.h new file mode 100644 index 000000000..91b0a68d3 --- /dev/null +++ b/kernel/include/linux/xattr.h @@ -0,0 +1,100 @@ +/* + File: linux/xattr.h + + Extended attributes handling. + + Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org> + Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved. + Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com> +*/ +#ifndef _LINUX_XATTR_H +#define _LINUX_XATTR_H + + +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/spinlock.h> +#include <uapi/linux/xattr.h> + +struct inode; +struct dentry; + +struct xattr_handler { + const char *prefix; + int flags; /* fs private flags passed back to the handlers */ + size_t (*list)(struct dentry *dentry, char *list, size_t list_size, + const char *name, size_t name_len, int handler_flags); + int (*get)(struct dentry *dentry, const char *name, void *buffer, + size_t size, int handler_flags); + int (*set)(struct dentry *dentry, const char *name, const void *buffer, + size_t size, int flags, int handler_flags); +}; + +struct xattr { + const char *name; + void *value; + size_t value_len; +}; + +ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t); +ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t); +ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size); +int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int); +int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int); +int vfs_removexattr(struct dentry *, const char *); + +ssize_t generic_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size); +ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size); +int generic_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); +int generic_removexattr(struct dentry *dentry, const char *name); +ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name, + char **xattr_value, size_t size, gfp_t flags); +int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name, + const char *value, size_t size, gfp_t flags); + +struct simple_xattrs { + struct list_head head; + spinlock_t lock; +}; + +struct simple_xattr { + struct list_head list; + char *name; + size_t size; + char value[0]; +}; + +/* + * initialize the simple_xattrs structure + */ +static inline void simple_xattrs_init(struct simple_xattrs *xattrs) +{ + INIT_LIST_HEAD(&xattrs->head); + spin_lock_init(&xattrs->lock); +} + +/* + * free all the xattrs + */ +static inline void simple_xattrs_free(struct simple_xattrs *xattrs) +{ + struct simple_xattr *xattr, *node; + + list_for_each_entry_safe(xattr, node, &xattrs->head, list) { + kfree(xattr->name); + kfree(xattr); + } +} + +struct simple_xattr *simple_xattr_alloc(const void *value, size_t size); +int simple_xattr_get(struct simple_xattrs *xattrs, const char *name, + void *buffer, size_t size); +int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, + const void *value, size_t size, int flags); +int simple_xattr_remove(struct simple_xattrs *xattrs, const char *name); +ssize_t simple_xattr_list(struct simple_xattrs *xattrs, char *buffer, + size_t size); +void simple_xattr_list_add(struct simple_xattrs *xattrs, + struct simple_xattr *new_xattr); + +#endif /* _LINUX_XATTR_H */ |