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Diffstat (limited to 'xlators/nfs/server/src/nfs3-helpers.h')
| -rw-r--r-- | xlators/nfs/server/src/nfs3-helpers.h | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/xlators/nfs/server/src/nfs3-helpers.h b/xlators/nfs/server/src/nfs3-helpers.h new file mode 100644 index 00000000000..aead636c831 --- /dev/null +++ b/xlators/nfs/server/src/nfs3-helpers.h @@ -0,0 +1,339 @@ +/* + Copyright (c) 2010-2011 Gluster, Inc. <http://www.gluster.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#ifndef _NFS3_HELPER_H_ +#define _NFS3_HELPER_H_ + +#include <glusterfs/xlator.h> +#include "nfs3.h" +#include "nfs3-fh.h" +#include "msg-nfs3.h" +#include "xdr-nfs3.h" + +#include <sys/statvfs.h> + +#define GF_NFS3_FD_CACHED 0xcaced + +extern struct nfs3_fh +nfs3_extract_lookup_fh(lookup3args *args); + +extern char * +nfs3_extract_lookup_name(lookup3args *args); + +extern nfsstat3 +nfs3_errno_to_nfsstat3(int errnum); + +extern nfsstat3 nfs3_cbk_errno_status(int32_t, int32_t); + +extern void +nfs3_fill_lookup3res(lookup3res *res, nfsstat3 stat, struct nfs3_fh *newfh, + struct iatt *stbuf, struct iatt *postparent, + uint64_t deviceid); + +extern post_op_attr +nfs3_stat_to_post_op_attr(struct iatt *buf); + +extern struct nfs3_fh +nfs3_extract_getattr_fh(getattr3args *args); + +extern void +nfs3_fill_getattr3res(getattr3res *res, nfsstat3 stat, struct iatt *buf, + uint64_t deviceid); + +extern struct nfs3_fh +nfs3_extract_fsinfo_fh(fsinfo3args *args); + +extern void +nfs3_fill_fsinfo3res(struct nfs3_state *nfs3, fsinfo3res *res, nfsstat3 status, + struct iatt *fsroot, uint64_t deviceid); + +/* Functions containing _prep_ are used specifically to work around + * the memory allocations that happen inside Sun RPC library. + * In that library, there are numerous places where every NFS request + * can result in really tiny malloc calls. I fear the memory fragmentation + * that will follow. After studying the points at and the way in which malloc + * is called in Sun RPC, I've come up with this work-around. It is based on + * the idea that if the user/caller of the xdr_to_XXXXargs functions can provide + * already allocated memory or provide references to memory areas on its stack + * just for the short-term purpose of decoding the message from XDR format, we + * can avoid the memory allocations in Sun RPC. This is based on the fact + * that Sun RPC first checks whether structure members which require memory + * are NULL or not and only then calls malloc. In this case, if the caller + * provided references are non-NULL, then the if-branches containing malloc + * in Sun RPC will be avoided. + * PS: You're not expected to understand this unless you've spent some time + * looking through the glibc/sunrpc sources. + */ +extern void +nfs3_prep_lookup3args(lookup3args *args, struct nfs3_fh *fh, char *name); + +extern void +nfs3_prep_getattr3args(getattr3args *args, struct nfs3_fh *fh); + +extern void +nfs3_prep_fsinfo3args(fsinfo3args *args, struct nfs3_fh *root); + +extern char * +nfsstat3_strerror(int stat); + +extern void +nfs3_prep_access3args(access3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_access3res(access3res *res, nfsstat3 status, int32_t accbits, + int32_t reqaccbits); + +extern char * +nfs3_fhcache_getpath(struct nfs3_state *nfs3, struct nfs3_fh *fh); + +extern int +nfs3_fhcache_putpath(struct nfs3_state *nfs3, struct nfs3_fh *fh, char *path); + +extern void +nfs3_prep_readdir3args(readdir3args *ra, struct nfs3_fh *fh); + +extern void +nfs3_fill_readdir3res(readdir3res *res, nfsstat3 stat, struct nfs3_fh *dfh, + uint64_t cverf, struct iatt *dirstat, + gf_dirent_t *entries, count3 count, int is_eof, + uint64_t deviceid); + +extern void +nfs3_prep_readdirp3args(readdirp3args *ra, struct nfs3_fh *fh); + +extern void +nfs3_fill_readdirp3res(readdirp3res *res, nfsstat3 stat, struct nfs3_fh *dirfh, + uint64_t cverf, struct iatt *dirstat, + gf_dirent_t *entries, count3 dircount, count3 maxcount, + int is_eof, uint64_t deviceid); + +extern void +nfs3_free_readdirp3res(readdirp3res *res); + +extern void +nfs3_free_readdir3res(readdir3res *res); + +extern void +nfs3_prep_fsstat3args(fsstat3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_fsstat3res(fsstat3res *res, nfsstat3 stat, struct statvfs *fsbuf, + struct iatt *postbuf, uint64_t deviceid); + +extern int32_t +nfs3_sattr3_to_setattr_valid(sattr3 *sattr, struct iatt *buf, mode_t *omode); +extern void +nfs3_fill_create3res(create3res *res, nfsstat3 stat, struct nfs3_fh *newfh, + struct iatt *newbuf, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); + +extern void +nfs3_prep_create3args(create3args *args, struct nfs3_fh *fh, char *name); + +extern void +nfs3_prep_setattr3args(setattr3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_setattr3res(setattr3res *res, nfsstat3 stat, struct iatt *preop, + struct iatt *postop, uint64_t deviceid); + +extern void +nfs3_prep_mkdir3args(mkdir3args *args, struct nfs3_fh *dirfh, char *name); + +extern void +nfs3_fill_mkdir3res(mkdir3res *res, nfsstat3 stat, struct nfs3_fh *fh, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); + +extern void +nfs3_prep_symlink3args(symlink3args *args, struct nfs3_fh *dirfh, char *name, + char *target); + +extern void +nfs3_fill_symlink3res(symlink3res *res, nfsstat3 stat, struct nfs3_fh *fh, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); + +extern void +nfs3_prep_readlink3args(readlink3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_readlink3res(readlink3res *res, nfsstat3 stat, char *path, + struct iatt *buf, uint64_t deviceid); + +extern void +nfs3_prep_mknod3args(mknod3args *args, struct nfs3_fh *fh, char *name); + +extern void +nfs3_fill_mknod3res(mknod3res *res, nfsstat3 stat, struct nfs3_fh *fh, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); + +extern void +nfs3_fill_remove3res(remove3res *res, nfsstat3 stat, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); +extern void +nfs3_prep_remove3args(remove3args *args, struct nfs3_fh *fh, char *name); + +extern void +nfs3_fill_rmdir3res(rmdir3res *res, nfsstat3 stat, struct iatt *preparent, + struct iatt *postparent, uint64_t deviceid); + +extern void +nfs3_prep_rmdir3args(rmdir3args *args, struct nfs3_fh *fh, char *name); + +extern void +nfs3_fill_link3res(link3res *res, nfsstat3 stat, struct iatt *buf, + struct iatt *preparent, struct iatt *postparent, + uint64_t deviceid); + +extern void +nfs3_prep_link3args(link3args *args, struct nfs3_fh *target, + struct nfs3_fh *dirfh, char *name); + +extern void +nfs3_prep_rename3args(rename3args *args, struct nfs3_fh *olddirfh, + char *oldname, struct nfs3_fh *newdirfh, char *newname); + +extern void +nfs3_fill_rename3res(rename3res *res, nfsstat3 stat, struct iatt *buf, + struct iatt *preoldparent, struct iatt *postoldparent, + struct iatt *prenewparent, struct iatt *postnewparent, + uint64_t deviceid); + +extern void +nfs3_prep_write3args(write3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_write3res(write3res *res, nfsstat3 stat, count3 count, + stable_how stable, uint64_t wverf, struct iatt *prestat, + struct iatt *poststat, uint64_t deviceid); + +extern void +nfs3_prep_commit3args(commit3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_commit3res(commit3res *res, nfsstat3 stat, uint64_t wverf, + struct iatt *prestat, struct iatt *poststat, + uint64_t deviceid); + +extern void +nfs3_fill_read3res(read3res *res, nfsstat3 stat, count3 count, + struct iatt *poststat, int is_eof, uint64_t deviceid); + +extern void +nfs3_prep_read3args(read3args *args, struct nfs3_fh *fh); + +extern void +nfs3_prep_pathconf3args(pathconf3args *args, struct nfs3_fh *fh); + +extern void +nfs3_fill_pathconf3res(pathconf3res *res, nfsstat3 stat, struct iatt *buf, + uint64_t deviceid); + +extern int +nfs3_cached_inode_opened(xlator_t *nfsxl, inode_t *inode); + +extern void +nfs3_log_common_res(uint32_t xid, int op, nfsstat3 stat, int pstat, + const char *path); + +extern void +nfs3_log_readlink_res(uint32_t xid, nfsstat3 stat, int pstat, char *linkpath, + const char *path); + +extern void +nfs3_log_read_res(uint32_t xid, nfsstat3 stat, int pstat, count3 count, + int is_eof, struct iovec *vec, int32_t vcount, + const char *path); + +extern void +nfs3_log_write_res(uint32_t xid, nfsstat3 stat, int pstat, count3 count, + int stable, uint64_t wverf, const char *path); + +extern void +nfs3_log_newfh_res(uint32_t xid, int op, nfsstat3 stat, int pstat, + struct nfs3_fh *newfh, const char *path); + +extern void +nfs3_log_readdir_res(uint32_t xid, nfsstat3 stat, int pstat, uint64_t cverf, + count3 count, int is_eof, const char *path); + +extern void +nfs3_log_readdirp_res(uint32_t xid, nfsstat3 stat, int pstat, uint64_t cverf, + count3 dircount, count3 maxcount, int is_eof, + const char *path); + +extern void +nfs3_log_commit_res(uint32_t xid, nfsstat3 stat, int pstat, uint64_t wverf, + const char *path); + +extern void +nfs3_log_common_call(uint32_t xid, char *op, struct nfs3_fh *fh); + +extern void +nfs3_log_fh_entry_call(uint32_t xid, char *op, struct nfs3_fh *fh, char *name); + +extern void +nfs3_log_rw_call(uint32_t xid, char *op, struct nfs3_fh *fh, offset3 offt, + count3 count, int stablewrite); + +extern void +nfs3_log_create_call(uint32_t xid, struct nfs3_fh *fh, char *name, + createmode3 mode); + +extern void +nfs3_log_symlink_call(uint32_t xid, struct nfs3_fh *fh, char *name, char *tgt); + +extern void +nfs3_log_mknod_call(uint32_t xid, struct nfs3_fh *fh, char *name, int type); + +extern void +nfs3_log_rename_call(uint32_t xid, struct nfs3_fh *src, char *sname, + struct nfs3_fh *dst, char *dname); + +extern void +nfs3_log_link_call(uint32_t xid, struct nfs3_fh *fh, char *name, + struct nfs3_fh *tgt); + +extern void +nfs3_log_readdir_call(uint32_t xid, struct nfs3_fh *fh, count3 dircount, + count3 maxcount); + +extern int +nfs3_fh_resolve_entry_hard(nfs3_call_state_t *cs); + +extern int +nfs3_fh_resolve_inode(nfs3_call_state_t *cs); + +extern int +nfs3_fh_resolve_entry(nfs3_call_state_t *cs); + +extern int +nfs3_fh_resolve_and_resume(nfs3_call_state_t *cs, struct nfs3_fh *fh, + char *entry, nfs3_resume_fn_t resum_fn); + +extern int +nfs3_verify_dircookie(struct nfs3_state *nfs3, fd_t *dirfd, cookie3 cookie, + uint64_t cverf, nfsstat3 *stat); + +extern int +nfs3_is_parentdir_entry(char *entry); + +uint32_t +nfs3_request_to_accessbits(int32_t accbits); + +extern int +nfs3_fh_auth_nfsop(nfs3_call_state_t *cs, gf_boolean_t is_write_op); + +void +nfs3_map_deviceid_to_statdev(struct iatt *ia, uint64_t deviceid); + +#endif |