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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/uapi/linux/nfsd/cld.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/uapi/linux/nfsd/cld.h')
-rw-r--r-- | include/uapi/linux/nfsd/cld.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/include/uapi/linux/nfsd/cld.h b/include/uapi/linux/nfsd/cld.h new file mode 100644 index 000000000..a519313af --- /dev/null +++ b/include/uapi/linux/nfsd/cld.h @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * Upcall description for nfsdcld communication + * + * Copyright (c) 2012 Red Hat, Inc. + * Author(s): Jeff Layton <jlayton@redhat.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _NFSD_CLD_H +#define _NFSD_CLD_H + +#include <linux/types.h> + +/* latest upcall version available */ +#define CLD_UPCALL_VERSION 2 + +/* defined by RFC3530 */ +#define NFS4_OPAQUE_LIMIT 1024 + +#ifndef SHA256_DIGEST_SIZE +#define SHA256_DIGEST_SIZE 32 +#endif + +enum cld_command { + Cld_Create, /* create a record for this cm_id */ + Cld_Remove, /* remove record of this cm_id */ + Cld_Check, /* is this cm_id allowed? */ + Cld_GraceDone, /* grace period is complete */ + Cld_GraceStart, /* grace start (upload client records) */ + Cld_GetVersion, /* query max supported upcall version */ +}; + +/* representation of long-form NFSv4 client ID */ +struct cld_name { + __u16 cn_len; /* length of cm_id */ + unsigned char cn_id[NFS4_OPAQUE_LIMIT]; /* client-provided */ +} __attribute__((packed)); + +/* sha256 hash of the kerberos principal */ +struct cld_princhash { + __u8 cp_len; /* length of cp_data */ + unsigned char cp_data[SHA256_DIGEST_SIZE]; /* hash of principal */ +} __attribute__((packed)); + +struct cld_clntinfo { + struct cld_name cc_name; + struct cld_princhash cc_princhash; +} __attribute__((packed)); + +/* message struct for communication with userspace */ +struct cld_msg { + __u8 cm_vers; /* upcall version */ + __u8 cm_cmd; /* upcall command */ + __s16 cm_status; /* return code */ + __u32 cm_xid; /* transaction id */ + union { + __s64 cm_gracetime; /* grace period start time */ + struct cld_name cm_name; + __u8 cm_version; /* for getting max version */ + } __attribute__((packed)) cm_u; +} __attribute__((packed)); + +/* version 2 message can include hash of kerberos principal */ +struct cld_msg_v2 { + __u8 cm_vers; /* upcall version */ + __u8 cm_cmd; /* upcall command */ + __s16 cm_status; /* return code */ + __u32 cm_xid; /* transaction id */ + union { + struct cld_name cm_name; + __u8 cm_version; /* for getting max version */ + struct cld_clntinfo cm_clntinfo; /* name & princ hash */ + } __attribute__((packed)) cm_u; +} __attribute__((packed)); + +struct cld_msg_hdr { + __u8 cm_vers; /* upcall version */ + __u8 cm_cmd; /* upcall command */ + __s16 cm_status; /* return code */ + __u32 cm_xid; /* transaction id */ +} __attribute__((packed)); + +#endif /* !_NFSD_CLD_H */ |