diff --git a/fs/nfsd/current_stateid.h b/fs/nfsd/current_stateid.h new file mode 100644 index 0000000000000000000000000000000000000000..a83dd508cb8c5cbbf6ce054d145ba7d549ad5e06 --- /dev/null +++ b/fs/nfsd/current_stateid.h @@ -0,0 +1,11 @@ +#ifndef _NFSD4_CURRENT_STATE_H +#define _NFSD4_CURRENT_STATE_H + +#include "state.h" +#include "xdr4.h" + +extern void nfsd4_set_openstateid(struct nfsd4_compound_state *, struct nfsd4_open *); +extern void nfsd4_get_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *); +extern void nfsd4_set_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *); + +#endif /* _NFSD4_CURRENT_STATE_H */ diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 896da74ec5634fd92739e0284f5d0768c8f12437..b08f6e50fc48f445ebdf2fb358674c568d25dd52 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -39,6 +39,7 @@ #include "cache.h" #include "xdr4.h" #include "vfs.h" +#include "current_stateid.h" #define NFSDDBG_FACILITY NFSDDBG_PROC @@ -1000,6 +1001,8 @@ static inline void nfsd4_increment_op_stats(u32 opnum) typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, void *); typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op); +typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *); +typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *); enum nfsd4_op_flags { ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ @@ -1025,6 +1028,10 @@ enum nfsd4_op_flags { * the v4.0 case). */ OP_CACHEME = 1 << 6, + /* + * These are ops which clear current state id. + */ + OP_CLEAR_STATEID = 1 << 7, }; struct nfsd4_operation { @@ -1033,6 +1040,8 @@ struct nfsd4_operation { char *op_name; /* Try to get response size before operation */ nfsd4op_rsize op_rsize_bop; + stateid_setter op_get_currentstateid; + stateid_getter op_set_currentstateid; }; static struct nfsd4_operation nfsd4_ops[]; @@ -1215,13 +1224,23 @@ nfsd4_proc_compound(struct svc_rqst *rqstp, if (op->status) goto encode_op; - if (opdesc->op_func) + if (opdesc->op_func) { + if (opdesc->op_get_currentstateid) + opdesc->op_get_currentstateid(cstate, &op->u); op->status = opdesc->op_func(rqstp, cstate, &op->u); - else + } else BUG_ON(op->status == nfs_ok); - if (!op->status && need_wrongsec_check(rqstp)) - op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); + if (!op->status) { + if (opdesc->op_set_currentstateid) + opdesc->op_set_currentstateid(cstate, &op->u); + + if (opdesc->op_flags & OP_CLEAR_STATEID) + cstate->current_stateid = NULL; + + if (need_wrongsec_check(rqstp)) + op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); + } encode_op: /* Only from SEQUENCE */ @@ -1413,6 +1432,8 @@ static struct nfsd4_operation nfsd4_ops[] = { .op_flags = OP_MODIFIES_SOMETHING, .op_name = "OP_CLOSE", .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, + .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid, + .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid, }, [OP_COMMIT] = { .op_func = (nfsd4op_func)nfsd4_commit, @@ -1483,6 +1504,7 @@ static struct nfsd4_operation nfsd4_ops[] = { .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, .op_name = "OP_OPEN", .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize, + .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid, }, [OP_OPEN_CONFIRM] = { .op_func = (nfsd4op_func)nfsd4_open_confirm, diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 905808bc94bbbe10667255184e96b147acd77dfa..2604e7ea858226564d437a25888b93da244e39de 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4695,3 +4695,35 @@ nfs4_state_shutdown(void) nfs4_unlock_state(); nfsd4_destroy_callback_queue(); } + +static void +get_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) +{ + if (cstate->current_stateid && CURRENT_STATEID(stateid)) + memcpy(stateid, cstate->current_stateid, sizeof(stateid_t)); +} + +static void +put_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) +{ + if (cstate->minorversion) + cstate->current_stateid = stateid; +} + +void +nfsd4_set_openstateid(struct nfsd4_compound_state *cstate, struct nfsd4_open *open) +{ + put_stateid(cstate, &open->op_stateid); +} + +void +nfsd4_get_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close) +{ + get_stateid(cstate, &close->cl_stateid); +} + +void +nfsd4_set_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close) +{ + get_stateid(cstate, &close->cl_stateid); +} diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 21dccdfcb7a6d053e43546c8e3b368b391ebc945..b49ffe83e604c327f16ac00cafb5b244916f84e1 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -54,6 +54,7 @@ struct nfsd4_compound_state { size_t iovlen; u32 minorversion; u32 status; + const stateid_t *current_stateid; }; static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)