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a257cdd0e2
This adds functions for encoding and decoding POSIX ACLs for the NFSACL protocol extension, and the GETACL and SETACL RPCs. The implementation is compatible with NFSACL in Solaris. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* File: linux/nfsacl.h
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*
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* (C) 2003 Andreas Gruenbacher <agruen@suse.de>
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*/
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#ifndef __LINUX_NFSACL_H
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#define __LINUX_NFSACL_H
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#define NFS_ACL_PROGRAM 100227
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#define ACLPROC2_GETACL 1
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#define ACLPROC2_SETACL 2
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#define ACLPROC2_GETATTR 3
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#define ACLPROC2_ACCESS 4
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#define ACLPROC3_GETACL 1
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#define ACLPROC3_SETACL 2
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/* Flags for the getacl/setacl mode */
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#define NFS_ACL 0x0001
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#define NFS_ACLCNT 0x0002
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#define NFS_DFACL 0x0004
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#define NFS_DFACLCNT 0x0008
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/* Flag for Default ACL entries */
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#define NFS_ACL_DEFAULT 0x1000
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#ifdef __KERNEL__
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#include <linux/posix_acl.h>
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/* Maximum number of ACL entries over NFS */
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#define NFS_ACL_MAX_ENTRIES 1024
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#define NFSACL_MAXWORDS (2*(2+3*NFS_ACL_MAX_ENTRIES))
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#define NFSACL_MAXPAGES ((2*(8+12*NFS_ACL_MAX_ENTRIES) + PAGE_SIZE-1) \
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>> PAGE_SHIFT)
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static inline unsigned int
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nfsacl_size(struct posix_acl *acl_access, struct posix_acl *acl_default)
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{
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unsigned int w = 16;
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w += max(acl_access ? (int)acl_access->a_count : 3, 4) * 12;
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if (acl_default)
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w += max((int)acl_default->a_count, 4) * 12;
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return w;
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}
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extern unsigned int
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nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
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struct posix_acl *acl, int encode_entries, int typeflag);
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extern unsigned int
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nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
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struct posix_acl **pacl);
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#endif /* __KERNEL__ */
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#endif /* __LINUX_NFSACL_H */
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