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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

cld.h (3122B)

    

  1. /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
  2. /*
  3.  * Upcall description for nfsdcld communication
  4.  *
  5.  * Copyright (c) 2012 Red Hat, Inc.
  6.  * Author(s): Jeff Layton <jlayton@redhat.com>
  7.  *
  8.  *  This program is free software; you can redistribute it and/or modify
  9.  *  it under the terms of the GNU General Public License as published by
  10.  *  the Free Software Foundation; either version 2 of the License, or
  11.  *  (at your option) any later version.
  12.  *
  13.  *  This program is distributed in the hope that it will be useful,
  14.  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16.  *  GNU General Public License for more details.
  17.  *
  18.  *  You should have received a copy of the GNU General Public License
  19.  *  along with this program; if not, write to the Free Software
  20.  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21.  */
  23. #ifndef _NFSD_CLD_H
  24. #define _NFSD_CLD_H
  26. #include <linux/types.h>
  28. /* latest upcall version available */
  29. #define CLD_UPCALL_VERSION 2
  31. /* defined by RFC3530 */
  32. #define NFS4_OPAQUE_LIMIT 1024
  34. #ifndef SHA256_DIGEST_SIZE
  35. #define SHA256_DIGEST_SIZE      32
  36. #endif
  38. enum cld_command {
  39. 	Cld_Create,		/* create a record for this cm_id */
  40. 	Cld_Remove,		/* remove record of this cm_id */
  41. 	Cld_Check,		/* is this cm_id allowed? */
  42. 	Cld_GraceDone,		/* grace period is complete */
  43. 	Cld_GraceStart,		/* grace start (upload client records) */
  44. 	Cld_GetVersion,		/* query max supported upcall version */
  45. };
  47. /* representation of long-form NFSv4 client ID */
  48. struct cld_name {
  49. 	__u16		cn_len;				/* length of cm_id */
  50. 	unsigned char	cn_id[NFS4_OPAQUE_LIMIT];	/* client-provided */
  51. } __attribute__((packed));
  53. /* sha256 hash of the kerberos principal */
  54. struct cld_princhash {
  55. 	__u8		cp_len;				/* length of cp_data */
  56. 	unsigned char	cp_data[SHA256_DIGEST_SIZE];	/* hash of principal */
  57. } __attribute__((packed));
  59. struct cld_clntinfo {
  60. 	struct cld_name		cc_name;
  61. 	struct cld_princhash	cc_princhash;
  62. } __attribute__((packed));
  64. /* message struct for communication with userspace */
  65. struct cld_msg {
  66. 	__u8		cm_vers;		/* upcall version */
  67. 	__u8		cm_cmd;			/* upcall command */
  68. 	__s16		cm_status;		/* return code */
  69. 	__u32		cm_xid;			/* transaction id */
  70. 	union {
  71. 		__s64		cm_gracetime;	/* grace period start time */
  72. 		struct cld_name	cm_name;
  73. 		__u8		cm_version;	/* for getting max version */
  74. 	} __attribute__((packed)) cm_u;
  75. } __attribute__((packed));
  77. /* version 2 message can include hash of kerberos principal */
  78. struct cld_msg_v2 {
  79. 	__u8		cm_vers;		/* upcall version */
  80. 	__u8		cm_cmd;			/* upcall command */
  81. 	__s16		cm_status;		/* return code */
  82. 	__u32		cm_xid;			/* transaction id */
  83. 	union {
  84. 		struct cld_name	cm_name;
  85. 		__u8		cm_version;	/* for getting max version */
  86. 		struct cld_clntinfo cm_clntinfo; /* name & princ hash */
  87. 	} __attribute__((packed)) cm_u;
  88. } __attribute__((packed));
  90. struct cld_msg_hdr {
  91. 	__u8		cm_vers;		/* upcall version */
  92. 	__u8		cm_cmd;			/* upcall command */
  93. 	__s16		cm_status;		/* return code */
  94. 	__u32		cm_xid;			/* transaction id */
  95. } __attribute__((packed));
  97. #endif /* !_NFSD_CLD_H */