| 1 | /* |
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| 2 | * include/linux/nfsd/syscall.h |
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| 3 | * |
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| 4 | * This file holds all declarations for the knfsd syscall interface. |
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| 5 | * |
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| 6 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef NFSD_SYSCALL_H |
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| 10 | #define NFSD_SYSCALL_H |
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| 11 | |
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| 12 | #include <asm/types.h> |
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| 13 | #include <linux/posix_types.h> |
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| 14 | #include <linux/nfsd/const.h> |
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| 15 | #include <linux/nfsd/export.h> |
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| 16 | #include <linux/nfsd/nfsfh.h> |
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| 17 | |
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| 18 | /* |
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| 19 | * Version of the syscall interface |
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| 20 | */ |
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| 21 | #define NFSCTL_VERSION 0x0201 |
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| 22 | |
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| 23 | /* |
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| 24 | * These are the commands understood by nfsctl(). |
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| 25 | */ |
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| 26 | #define NFSCTL_SVC 0 /* This is a server process. */ |
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| 27 | #define NFSCTL_ADDCLIENT 1 /* Add an NFS client. */ |
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| 28 | #define NFSCTL_DELCLIENT 2 /* Remove an NFS client. */ |
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| 29 | #define NFSCTL_EXPORT 3 /* export a file system. */ |
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| 30 | #define NFSCTL_UNEXPORT 4 /* unexport a file system. */ |
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| 31 | /*#define NFSCTL_UGIDUPDATE 5 / * update a client's uid/gid map. DISCARDED */ |
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| 32 | /*#define NFSCTL_GETFH 6 / * get an fh by ino DISCARDED */ |
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| 33 | #define NFSCTL_GETFD 7 /* get an fh by path (used by mountd) */ |
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| 34 | #define NFSCTL_GETFS 8 /* get an fh by path with max FH len */ |
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| 35 | |
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| 36 | /* SVC */ |
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| 37 | struct nfsctl_svc { |
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| 38 | unsigned short svc_port; |
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| 39 | int svc_nthreads; |
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| 40 | }; |
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| 41 | |
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| 42 | /* ADDCLIENT/DELCLIENT */ |
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| 43 | struct nfsctl_client { |
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| 44 | char cl_ident[NFSCLNT_IDMAX+1]; |
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| 45 | int cl_naddr; |
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| 46 | struct in_addr cl_addrlist[NFSCLNT_ADDRMAX]; |
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| 47 | int cl_fhkeytype; |
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| 48 | int cl_fhkeylen; |
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| 49 | unsigned char cl_fhkey[NFSCLNT_KEYMAX]; |
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| 50 | }; |
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| 51 | |
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| 52 | /* EXPORT/UNEXPORT */ |
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| 53 | struct nfsctl_export { |
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| 54 | char ex_client[NFSCLNT_IDMAX+1]; |
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| 55 | char ex_path[NFS_MAXPATHLEN+1]; |
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| 56 | __kernel_old_dev_t ex_dev; |
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| 57 | __kernel_ino_t ex_ino; |
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| 58 | int ex_flags; |
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| 59 | __kernel_uid_t ex_anon_uid; |
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| 60 | __kernel_gid_t ex_anon_gid; |
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| 61 | }; |
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| 62 | |
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| 63 | /* GETFD */ |
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| 64 | struct nfsctl_fdparm { |
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| 65 | struct sockaddr gd_addr; |
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| 66 | char gd_path[NFS_MAXPATHLEN+1]; |
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| 67 | int gd_version; |
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| 68 | }; |
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| 69 | |
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| 70 | /* GETFS - GET Filehandle with Size */ |
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| 71 | struct nfsctl_fsparm { |
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| 72 | struct sockaddr gd_addr; |
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| 73 | char gd_path[NFS_MAXPATHLEN+1]; |
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| 74 | int gd_maxlen; |
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| 75 | }; |
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| 76 | |
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| 77 | /* |
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| 78 | * This is the argument union. |
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| 79 | */ |
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| 80 | struct nfsctl_arg { |
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| 81 | int ca_version; /* safeguard */ |
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| 82 | union { |
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| 83 | struct nfsctl_svc u_svc; |
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| 84 | struct nfsctl_client u_client; |
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| 85 | struct nfsctl_export u_export; |
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| 86 | struct nfsctl_fdparm u_getfd; |
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| 87 | struct nfsctl_fsparm u_getfs; |
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| 88 | /* |
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| 89 | * The following dummy member is needed to preserve binary compatibility |
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| 90 | * on platforms where alignof(void*)>alignof(int). It's needed because |
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| 91 | * this union used to contain a member (u_umap) which contained a |
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| 92 | * pointer. |
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| 93 | */ |
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| 94 | void *u_ptr; |
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| 95 | } u; |
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| 96 | #define ca_svc u.u_svc |
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| 97 | #define ca_client u.u_client |
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| 98 | #define ca_export u.u_export |
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| 99 | #define ca_getfd u.u_getfd |
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| 100 | #define ca_getfs u.u_getfs |
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| 101 | }; |
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| 102 | |
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| 103 | union nfsctl_res { |
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| 104 | __u8 cr_getfh[NFS_FHSIZE]; |
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| 105 | struct knfsd_fh cr_getfs; |
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| 106 | }; |
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| 107 | |
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| 108 | #endif /* NFSD_SYSCALL_H */ |
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