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nfsd4: properly type op_get_currentstateid callbacks 

Pass union nfsd4_op_u to the op_set_currentstateid callbacks instead of
using unsafe function pointer casts.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2017-05-08 20:37:33 +02:00
parent b60e985980
commit 57832e7bd8
3 changed files with 50 additions and 35 deletions
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24
fs/nfsd/current_stateid.h
View File

@ -20,13 +20,21 @@ extern void nfsd4_set_closestateid(struct nfsd4_compound_state *,
/*
* functions to consume current state id
*/
extern void nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *);
extern void nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *, struct nfsd4_delegreturn *);
extern void nfsd4_get_freestateid(struct nfsd4_compound_state *, struct nfsd4_free_stateid *);
extern void nfsd4_get_setattrstateid(struct nfsd4_compound_state *, struct nfsd4_setattr *);
extern void nfsd4_get_closestateid(struct nfsd4_compound_state *, struct nfsd4_close *);
extern void nfsd4_get_lockustateid(struct nfsd4_compound_state *, struct nfsd4_locku *);
extern void nfsd4_get_readstateid(struct nfsd4_compound_state *, struct nfsd4_read *);
extern void nfsd4_get_writestateid(struct nfsd4_compound_state *, struct nfsd4_write *);
extern void nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_freestateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_setattrstateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_closestateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_lockustateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_readstateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
extern void nfsd4_get_writestateid(struct nfsd4_compound_state *,
union nfsd4_op_u *);
#endif /* _NFSD4_CURRENT_STATE_H */

21
fs/nfsd/nfs4proc.c
View File

@ -1525,8 +1525,6 @@ 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_getter)(struct nfsd4_compound_state *, void *);
enum nfsd4_op_flags {
ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
@ -1563,7 +1561,8 @@ struct nfsd4_operation {
char *op_name;
/* Try to get response size before operation */
nfsd4op_rsize op_rsize_bop;
stateid_getter op_get_currentstateid;
void (*op_get_currentstateid)(struct nfsd4_compound_state *,
union nfsd4_op_u *);
void (*op_set_currentstateid)(struct nfsd4_compound_state *,
union nfsd4_op_u *);
};
@ -2104,7 +2103,7 @@ 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_get_currentstateid = nfsd4_get_closestateid,
.op_set_currentstateid = nfsd4_set_closestateid,
},
[OP_COMMIT] = {
@ -2124,7 +2123,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_DELEGRETURN",
.op_rsize_bop = nfsd4_only_status_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
.op_get_currentstateid = nfsd4_get_delegreturnstateid,
},
[OP_GETATTR] = {
.op_func = (nfsd4op_func)nfsd4_getattr,
@ -2161,7 +2160,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_LOCKU",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
.op_get_currentstateid = nfsd4_get_lockustateid,
},
[OP_LOOKUP] = {
.op_func = (nfsd4op_func)nfsd4_lookup,
@ -2198,7 +2197,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING,
.op_name = "OP_OPEN_DOWNGRADE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
.op_get_currentstateid = nfsd4_get_opendowngradestateid,
.op_set_currentstateid = nfsd4_set_opendowngradestateid,
},
[OP_PUTFH] = {
@ -2226,7 +2225,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_read,
.op_name = "OP_READ",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
.op_get_currentstateid = nfsd4_get_readstateid,
},
[OP_READDIR] = {
.op_func = (nfsd4op_func)nfsd4_readdir,
@ -2282,7 +2281,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_name = "OP_SETATTR",
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
.op_get_currentstateid = nfsd4_get_setattrstateid,
},
[OP_SETCLIENTID] = {
.op_func = (nfsd4op_func)nfsd4_setclientid,
@ -2308,7 +2307,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_WRITE",
.op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
.op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
.op_get_currentstateid = nfsd4_get_writestateid,
},
[OP_RELEASE_LOCKOWNER] = {
.op_func = (nfsd4op_func)nfsd4_release_lockowner,
@ -2388,7 +2387,7 @@ static struct nfsd4_operation nfsd4_ops[] = {
.op_func = (nfsd4op_func)nfsd4_free_stateid,
.op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
.op_name = "OP_FREE_STATEID",
.op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
.op_get_currentstateid = nfsd4_get_freestateid,
.op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
},
#ifdef CONFIG_NFSD_PNFS

40
fs/nfsd/nfs4state.c
View File

@ -7135,49 +7135,57 @@ nfsd4_set_lockstateid(struct nfsd4_compound_state *cstate,
*/
void
nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *odp)
nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &odp->od_stateid);
get_stateid(cstate, &u->open_downgrade.od_stateid);
}
void
nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *cstate, struct nfsd4_delegreturn *drp)
nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &drp->dr_stateid);
get_stateid(cstate, &u->delegreturn.dr_stateid);
}
void
nfsd4_get_freestateid(struct nfsd4_compound_state *cstate, struct nfsd4_free_stateid *fsp)
nfsd4_get_freestateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &fsp->fr_stateid);
get_stateid(cstate, &u->free_stateid.fr_stateid);
}
void
nfsd4_get_setattrstateid(struct nfsd4_compound_state *cstate, struct nfsd4_setattr *setattr)
nfsd4_get_setattrstateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &setattr->sa_stateid);
get_stateid(cstate, &u->setattr.sa_stateid);
}
void
nfsd4_get_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close)
nfsd4_get_closestateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &close->cl_stateid);
get_stateid(cstate, &u->close.cl_stateid);
}
void
nfsd4_get_lockustateid(struct nfsd4_compound_state *cstate, struct nfsd4_locku *locku)
nfsd4_get_lockustateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &locku->lu_stateid);
get_stateid(cstate, &u->locku.lu_stateid);
}
void
nfsd4_get_readstateid(struct nfsd4_compound_state *cstate, struct nfsd4_read *read)
nfsd4_get_readstateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &read->rd_stateid);
get_stateid(cstate, &u->read.rd_stateid);
}
void
nfsd4_get_writestateid(struct nfsd4_compound_state *cstate, struct nfsd4_write *write)
nfsd4_get_writestateid(struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
get_stateid(cstate, &write->wr_stateid);
get_stateid(cstate, &u->write.wr_stateid);
}