diff options
Diffstat (limited to 'xlators/nfs/server/src/nfs3-fh.h')
| -rw-r--r-- | xlators/nfs/server/src/nfs3-fh.h | 99 |
1 files changed, 50 insertions, 49 deletions
diff --git a/xlators/nfs/server/src/nfs3-fh.h b/xlators/nfs/server/src/nfs3-fh.h index 3af36cc98b0..442f6feeb25 100644 --- a/xlators/nfs/server/src/nfs3-fh.h +++ b/xlators/nfs/server/src/nfs3-fh.h @@ -19,82 +19,83 @@ /* BIG FAT WARNING: The file handle code is tightly coupled to NFSv3 file * handles for now. This will change if and when we need v4. */ -#define GF_NFSFH_IDENT0 ':' -#define GF_NFSFH_IDENT1 'O' -#define GF_NFSFH_IDENT2 'G' -#define GF_NFSFH_IDENT3 'L' -#define GF_NFSFH_IDENT_SIZE (sizeof(char) * 4) -#define GF_NFSFH_STATIC_SIZE (GF_NFSFH_IDENT_SIZE + (3*sizeof (uuid_t))) - -#define nfs3_fh_exportid_to_index(exprtid) ((uint16_t)exprtid[15]) +#define GF_NFSFH_IDENT0 ':' +#define GF_NFSFH_IDENT1 'O' +#define GF_NFSFH_IDENT2 'G' +#define GF_NFSFH_IDENT3 'L' +#define GF_NFSFH_IDENT_SIZE (sizeof(char) * 4) +#define GF_NFSFH_STATIC_SIZE (GF_NFSFH_IDENT_SIZE + (3 * sizeof(uuid_t))) + +#define nfs3_fh_exportid_to_index(exprtid) ((uint16_t)exprtid[15]) /* ATTENTION: Change in size of the structure below should be reflected in the * GF_NFSFH_STATIC_SIZE. */ struct nfs3_fh { - - /* Used to ensure that a bunch of bytes are actually a GlusterFS NFS - * file handle. Should contain ":OGL" - */ - char ident[4]; - - /* UUID that identifies an export. The value stored in exportid - * depends on the usage of gluster nfs. If the DVM is enabled using - * the nfs.dynamic-volumes option then exportid will contain the UUID - * of the volume so that gnfs is able to identify volumes uniquely - * through volume additions,deletions,migrations, etc. - * - * When not using dvm, exportid contains the index of the volume - * based on the position of the volume in the list of subvolumes - * for gnfs. - */ - uuid_t exportid; - - /* File/dir gfid. */ - uuid_t gfid; - uuid_t mountid; - /* This structure must be exactly NFS3_FHSIZE (64) bytes long. - Having the structure shorter results in buffer overflows - during XDR decoding. - */ - unsigned char padding[NFS3_FHSIZE - GF_NFSFH_STATIC_SIZE]; + /* Used to ensure that a bunch of bytes are actually a GlusterFS NFS + * file handle. Should contain ":OGL" + */ + char ident[4]; + + /* UUID that identifies an export. The value stored in exportid + * depends on the usage of gluster nfs. If the DVM is enabled using + * the nfs.dynamic-volumes option then exportid will contain the UUID + * of the volume so that gnfs is able to identify volumes uniquely + * through volume additions,deletions,migrations, etc. + * + * When not using dvm, exportid contains the index of the volume + * based on the position of the volume in the list of subvolumes + * for gnfs. + */ + uuid_t exportid; + + /* File/dir gfid. */ + uuid_t gfid; + uuid_t mountid; + /* This structure must be exactly NFS3_FHSIZE (64) bytes long. + Having the structure shorter results in buffer overflows + during XDR decoding. + */ + unsigned char padding[NFS3_FHSIZE - GF_NFSFH_STATIC_SIZE]; } __attribute__((__packed__)); -#define GF_NFS3FH_STATIC_INITIALIZER {{0},} +#define GF_NFS3FH_STATIC_INITIALIZER \ + { \ + {0}, \ + } extern uint32_t -nfs3_fh_compute_size (); +nfs3_fh_compute_size(); extern uint16_t -nfs3_fh_hash_entry (uuid_t gfid); +nfs3_fh_hash_entry(uuid_t gfid); extern int -nfs3_fh_validate (struct nfs3_fh *fh); +nfs3_fh_validate(struct nfs3_fh *fh); extern struct nfs3_fh -nfs3_fh_build_indexed_root_fh (xlator_list_t *cl, xlator_t *xl); +nfs3_fh_build_indexed_root_fh(xlator_list_t *cl, xlator_t *xl); extern int -nfs3_fh_is_root_fh (struct nfs3_fh *fh); +nfs3_fh_is_root_fh(struct nfs3_fh *fh); extern int -nfs3_fh_build_child_fh (struct nfs3_fh *parent, struct iatt *newstat, - struct nfs3_fh *newfh); +nfs3_fh_build_child_fh(struct nfs3_fh *parent, struct iatt *newstat, + struct nfs3_fh *newfh); extern void -nfs3_log_fh (struct nfs3_fh *fh); +nfs3_log_fh(struct nfs3_fh *fh); extern void -nfs3_fh_to_str (struct nfs3_fh *fh, char *str, size_t len); +nfs3_fh_to_str(struct nfs3_fh *fh, char *str, size_t len); extern int -nfs3_fh_build_parent_fh (struct nfs3_fh *child, struct iatt *newstat, - struct nfs3_fh *newfh); +nfs3_fh_build_parent_fh(struct nfs3_fh *child, struct iatt *newstat, + struct nfs3_fh *newfh); extern struct nfs3_fh -nfs3_fh_build_uuid_root_fh (uuid_t volumeid, uuid_t mountid); +nfs3_fh_build_uuid_root_fh(uuid_t volumeid, uuid_t mountid); extern int -nfs3_build_fh (inode_t *inode, uuid_t exportid, - struct nfs3_fh *newfh); +nfs3_build_fh(inode_t *inode, uuid_t exportid, struct nfs3_fh *newfh); #endif |