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SUNRPC: remove groupinfo from struct auth_cred. 

We can use cred->groupinfo (from the 'struct cred') instead.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
NeilBrown 2018-12-03 11:30:30 +11:00 committed by Anna Schumaker
parent 97f68c6b02
commit fc0664fd9b
5 changed files with 14 additions and 31 deletions
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14
fs/nfs/flexfilelayout/flexfilelayout.c
View File

@ -28,9 +28,6 @@
#define FF_LAYOUT_POLL_RETRY_MAX (15*HZ)
#define FF_LAYOUTRETURN_MAXERR 20
static struct group_info *ff_zero_group;
static void ff_layout_read_record_layoutstats_done(struct rpc_task *task,
struct nfs_pgio_header *hdr);
static int ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo,
@ -414,7 +411,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh,
for (i = 0; i < fls->mirror_array_cnt; i++) {
struct nfs4_ff_layout_mirror *mirror;
struct auth_cred acred = { .group_info = ff_zero_group };
struct auth_cred acred = {};
struct rpc_cred __rcu *cred;
struct cred *kcred;
u32 ds_count, fh_count, id;
@ -2400,11 +2397,6 @@ static int __init nfs4flexfilelayout_init(void)
{
printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Registering...\n",
__func__);
if (!ff_zero_group) {
ff_zero_group = groups_alloc(0);
if (!ff_zero_group)
return -ENOMEM;
}
return pnfs_register_layoutdriver(&flexfilelayout_type);
}
@ -2413,10 +2405,6 @@ static void __exit nfs4flexfilelayout_exit(void)
printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Unregistering...\n",
__func__);
pnfs_unregister_layoutdriver(&flexfilelayout_type);
if (ff_zero_group) {
put_group_info(ff_zero_group);
ff_zero_group = NULL;
}
}
MODULE_ALIAS("nfs-layouttype4-4");

1
include/linux/sunrpc/auth.h
View File

@ -49,7 +49,6 @@ struct auth_cred {
const struct cred *cred;
kuid_t uid;
kgid_t gid;
struct group_info *group_info;
const char *principal;
unsigned long ac_flags;
unsigned char machine_cred : 1;

1
net/sunrpc/auth.c
View File

@ -658,7 +658,6 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
memset(&acred, 0, sizeof(acred));
acred.uid = cred->fsuid;
acred.gid = cred->fsgid;
acred.group_info = cred->group_info;
acred.cred = cred;
ret = auth->au_ops->lookup_cred(auth, &acred, flags);
return ret;

17
net/sunrpc/auth_generic.c
View File

@ -113,11 +113,8 @@ generic_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, g
gcred->acred.uid = acred->uid;
gcred->acred.gid = acred->gid;
gcred->acred.group_info = acred->group_info;
gcred->acred.cred = gcred->gc_base.cr_cred;
gcred->acred.ac_flags = 0;
if (gcred->acred.group_info != NULL)
get_group_info(gcred->acred.group_info);
gcred->acred.machine_cred = acred->machine_cred;
gcred->acred.principal = acred->principal;
@ -135,8 +132,6 @@ generic_free_cred(struct rpc_cred *cred)
struct generic_cred *gcred = container_of(cred, struct generic_cred, gc_base);
dprintk("RPC: generic_free_cred %p\n", gcred);
if (gcred->acred.group_info != NULL)
put_group_info(gcred->acred.group_info);
put_cred(cred->cr_cred);
kfree(gcred);
}
@ -173,6 +168,7 @@ generic_match(struct auth_cred *acred, struct rpc_cred *cred, int flags)
{
struct generic_cred *gcred = container_of(cred, struct generic_cred, gc_base);
int i;
struct group_info *a, *g;
if (acred->machine_cred)
return machine_cred_match(acred, gcred, flags);
@ -182,16 +178,17 @@ generic_match(struct auth_cred *acred, struct rpc_cred *cred, int flags)
gcred->acred.machine_cred != 0)
goto out_nomatch;
a = acred->cred->group_info;
g = gcred->acred.cred->group_info;
/* Optimisation in the case where pointers are identical... */
if (gcred->acred.group_info == acred->group_info)
if (a == g)
goto out_match;
/* Slow path... */
if (gcred->acred.group_info->ngroups != acred->group_info->ngroups)
if (g->ngroups != a->ngroups)
goto out_nomatch;
for (i = 0; i < gcred->acred.group_info->ngroups; i++) {
if (!gid_eq(gcred->acred.group_info->gid[i],
acred->group_info->gid[i]))
for (i = 0; i < g->ngroups; i++) {
if (!gid_eq(g->gid[i], a->gid[i]))
goto out_nomatch;
}
out_match:

12
net/sunrpc/auth_unix.c
View File

@ -79,14 +79,14 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, gfp_t
rpcauth_init_cred(&cred->uc_base, acred, auth, &unix_credops);
cred->uc_base.cr_flags = 1UL << RPCAUTH_CRED_UPTODATE;
if (acred->group_info != NULL)
groups = acred->group_info->ngroups;
if (acred->cred && acred->cred->group_info != NULL)
groups = acred->cred->group_info->ngroups;
if (groups > UNX_NGROUPS)
groups = UNX_NGROUPS;
cred->uc_gid = acred->gid;
for (i = 0; i < groups; i++)
cred->uc_gids[i] = acred->group_info->gid[i];
cred->uc_gids[i] = acred->cred->group_info->gid[i];
if (i < UNX_NGROUPS)
cred->uc_gids[i] = INVALID_GID;
@ -130,12 +130,12 @@ unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid))
return 0;
if (acred->group_info != NULL)
groups = acred->group_info->ngroups;
if (acred->cred && acred->cred->group_info != NULL)
groups = acred->cred->group_info->ngroups;
if (groups > UNX_NGROUPS)
groups = UNX_NGROUPS;
for (i = 0; i < groups ; i++)
if (!gid_eq(cred->uc_gids[i], acred->group_info->gid[i]))
if (!gid_eq(cred->uc_gids[i], acred->cred->group_info->gid[i]))
return 0;
if (groups < UNX_NGROUPS && gid_valid(cred->uc_gids[groups]))
return 0;