diff options
Diffstat (limited to 'nfsd/xdr.c')
| -rw-r--r-- | nfsd/xdr.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/nfsd/xdr.c b/nfsd/xdr.c new file mode 100644 index 00000000..8b175595 --- /dev/null +++ b/nfsd/xdr.c @@ -0,0 +1,218 @@ +/* xdr.c - XDR packing and unpacking in nfsd. + + Copyright (C) 1996, 2002, 2007 Free Software Foundation, Inc. + + Written by Michael I. Bushnell, p/BSG. + + This file is part of the GNU Hurd. + + The GNU Hurd 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, or (at + your option) any later version. + + The GNU Hurd 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + +#include <sys/stat.h> +#include <sys/statfs.h> +#include <string.h> +#include "nfsd.h" + +/* Any better ideas? */ +static int +hurd_mode_to_nfs_mode (mode_t m) +{ + return m & 0177777; +} + +static int +hurd_mode_to_nfs_type (mode_t m, int version) +{ + switch (m & S_IFMT) + { + case S_IFDIR: + return NFDIR; + + case S_IFCHR: + return NFCHR; + + case S_IFBLK: + return NFBLK; + + case S_IFREG: + return NFREG; + + case S_IFLNK: + return NFLNK; + + case S_IFSOCK: + return NFSOCK; + + case S_IFIFO: + return (version == 2 ? NF2FIFO : NF3FIFO); + + default: + return (version == 2 ? NF2NON : NFREG); + } +} + +/* Encode ST into P and return the next thing to come after it. */ +int * +encode_fattr (int *p, struct stat *st, int version) +{ + *(p++) = htonl (hurd_mode_to_nfs_type (st->st_mode, version)); + *(p++) = htonl (hurd_mode_to_nfs_mode (st->st_mode)); + *(p++) = htonl (st->st_nlink); + *(p++) = htonl (st->st_uid); + *(p++) = htonl (st->st_gid); + *(p++) = htonl (st->st_size); + *(p++) = htonl (st->st_blksize); + *(p++) = htonl (st->st_rdev); + *(p++) = htonl (st->st_blocks); + *(p++) = htonl (st->st_fsid); + *(p++) = htonl (st->st_ino); + *(p++) = htonl (st->st_atim.tv_sec); + *(p++) = htonl (st->st_atim.tv_nsec / 1000); + *(p++) = htonl (st->st_mtim.tv_sec); + *(p++) = htonl (st->st_mtim.tv_nsec / 1000); + *(p++) = htonl (st->st_ctim.tv_sec); + *(p++) = htonl (st->st_ctim.tv_nsec / 1000); + return p; +} + +/* Decode P into NAME and return the next thing to come after it. */ +int * +decode_name (int *p, char **name) +{ + int len; + + len = ntohl (*p); + p++; + *name = malloc (len + 1); + memcpy (*name, p, len); + (*name)[len] = '\0'; + return p + INTSIZE (len); +} + +/* Encode HANDLE into P and return the next thing to come after it. */ +int * +encode_fhandle (int *p, char *handle) +{ + memcpy (p, handle, NFS2_FHSIZE); + return p + INTSIZE (NFS2_FHSIZE); +} + +/* Encode STRING into P and return the next thing to come after it. */ +int * +encode_string (int *p, char *string) +{ + return encode_data (p, string, strlen (string)); +} + +/* Encode DATA into P and return the next thing to come after it. */ +int * +encode_data (int *p, char *data, size_t len) +{ + int nints = INTSIZE (len); + + p[nints] = 0; + *(p++) = htonl (len); + memcpy (p, data, len); + return p + nints; +} + +/* Encode ST into P and return the next thing to come after it. */ +int * +encode_statfs (int *p, struct statfs *st) +{ + *(p++) = st->f_bsize; + *(p++) = st->f_bsize; + *(p++) = st->f_blocks; + *(p++) = st->f_bfree; + *(p++) = st->f_bavail; + return p; +} + +/* Return an NFS error corresponding to Hurd error ERR. */ +int +nfs_error_trans (error_t err, int version) +{ + switch (err) + { + case 0: + return NFS_OK; + + case EPERM: + return NFSERR_PERM; + + case ENOENT: + return NFSERR_NOENT; + + case EIO: + return NFSERR_IO; + + case ENXIO: + return NFSERR_NXIO; + + case EACCES: + return NFSERR_ACCES; + + case EEXIST: + return NFSERR_EXIST; + + case ENODEV: + return NFSERR_NODEV; + + case ENOTDIR: + return NFSERR_NOTDIR; + + case EISDIR: + return NFSERR_ISDIR; + + case E2BIG: + return NFSERR_FBIG; + + case ENOSPC: + return NFSERR_NOSPC; + + case EROFS: + return NFSERR_ROFS; + + case ENAMETOOLONG: + return NFSERR_NAMETOOLONG; + + case ENOTEMPTY: + return NFSERR_NOTEMPTY; + + case EDQUOT: + return NFSERR_DQUOT; + + case ESTALE: + return NFSERR_STALE; + + default: + if (version == 2) + return NFSERR_IO; + else switch (err) + { + case EXDEV: + return NFSERR_XDEV; + + case EINVAL: + return NFSERR_INVAL; + + case EOPNOTSUPP: + return NFSERR_NOTSUPP; /* Are we sure here? */ + + default: + return NFSERR_IO; + } + } +} |