Return-Path: Received: from mx2.suse.de ([195.135.220.15]:38465 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751000AbeBSFDx (ORCPT ); Mon, 19 Feb 2018 00:03:53 -0500 From: NeilBrown To: Trond Myklebust , Anna Schumaker Date: Mon, 19 Feb 2018 16:02:29 +1100 Subject: [PATCH 07/23] SUNRPC: remove uid and gid from struct auth_cred Cc: linux-nfs@vger.kernel.org Message-ID: <151901654898.17421.4355422985169182426.stgit@noble> In-Reply-To: <151901634940.17421.7637564368419392071.stgit@noble> References: <151901634940.17421.7637564368419392071.stgit@noble> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: Use cred->fsuid and cred->fsgid instead. Signed-off-by: NeilBrown --- fs/nfs/flexfilelayout/flexfilelayout.c | 14 ++++++++------ fs/nfsd/nfs4callback.c | 6 ++---- include/linux/sunrpc/auth.h | 3 --- net/sunrpc/auth.c | 6 +----- net/sunrpc/auth_generic.c | 23 ++++++++--------------- net/sunrpc/auth_gss/auth_gss.c | 7 +++---- net/sunrpc/auth_unix.c | 12 ++++++------ 7 files changed, 28 insertions(+), 43 deletions(-) diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 40be5b102346..8ef4a9c50b10 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -414,6 +414,8 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, struct auth_cred acred = {}; struct rpc_cred __rcu *cred; struct cred *kcred; + kuid_t uid; + kgid_t gid; u32 ds_count, fh_count, id; int j; @@ -481,14 +483,14 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, if (rc) goto out_err_free; - acred.uid = make_kuid(&init_user_ns, id); + uid = make_kuid(&init_user_ns, id); /* group */ rc = decode_name(&stream, &id); if (rc) goto out_err_free; - acred.gid = make_kgid(&init_user_ns, id); + gid = make_kgid(&init_user_ns, id); if (gfp_flags & __GFP_FS) kcred = prepare_kernel_cred(NULL); @@ -500,8 +502,8 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, rc = -ENOMEM; if (!kcred) goto out_err_free; - kcred->fsuid = acred.uid; - kcred->fsgid = acred.gid; + kcred->fsuid = uid; + kcred->fsgid = gid; acred.cred = kcred; /* find the cred for it */ @@ -533,8 +535,8 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, dprintk("%s: iomode %s uid %u gid %u\n", __func__, lgr->range.iomode == IOMODE_READ ? "READ" : "RW", - from_kuid(&init_user_ns, acred.uid), - from_kgid(&init_user_ns, acred.gid)); + from_kuid(&init_user_ns, uid), + from_kgid(&init_user_ns, gid)); } p = xdr_inline_decode(&stream, 4); diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 65c39817fcfc..64154db945cf 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -780,10 +780,8 @@ static struct rpc_cred *get_backchannel_cred(struct nfs4_client *clp, struct rpc if (!kcred) return NULL; - acred.uid = ses->se_cb_sec.uid; - acred.gid = ses->se_cb_sec.gid; - kcred->uid = acred.uid; - kcred->gid = acred.gid; + kcred->uid = ses->se_cb_sec.uid; + kcred->gid = ses->se_cb_sec.gid; acred.cred = kcred; ret = auth->au_ops->lookup_cred(client->cl_auth, &acred, 0); put_cred(kcred); diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h index c4782203791d..2b19e687dc29 100644 --- a/include/linux/sunrpc/auth.h +++ b/include/linux/sunrpc/auth.h @@ -44,11 +44,8 @@ enum { key will expire soon */ }; -/* Work around the lack of a VFS credential */ struct auth_cred { const struct cred *cred; - kuid_t uid; - kgid_t gid; const char *principal; unsigned long ac_flags; unsigned char machine_cred : 1; diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 65af3a66de24..70133c54d96e 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -631,8 +631,6 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags) auth->au_ops->au_name); memset(&acred, 0, sizeof(acred)); - acred.uid = cred->fsuid; - acred.gid = cred->fsgid; acred.cred = cred; ret = auth->au_ops->lookup_cred(auth, &acred, flags); return ret; @@ -650,7 +648,7 @@ rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred, cred->cr_ops = ops; cred->cr_expire = jiffies; cred->cr_cred = get_cred(acred->cred); - cred->cr_uid = acred->uid; + cred->cr_uid = acred->cred->fsuid; } EXPORT_SYMBOL_GPL(rpcauth_init_cred); @@ -668,8 +666,6 @@ rpcauth_bind_root_cred(struct rpc_task *task, int lookupflags) { struct rpc_auth *auth = task->tk_client->cl_auth; struct auth_cred acred = { - .uid = GLOBAL_ROOT_UID, - .gid = GLOBAL_ROOT_GID, .cred = get_task_cred(&init_task), }; struct rpc_cred *ret; diff --git a/net/sunrpc/auth_generic.c b/net/sunrpc/auth_generic.c index 75b5cbb81fbd..de7ffff73943 100644 --- a/net/sunrpc/auth_generic.c +++ b/net/sunrpc/auth_generic.c @@ -18,9 +18,6 @@ # define RPCDBG_FACILITY RPCDBG_AUTH #endif -#define RPC_MACHINE_CRED_USERID GLOBAL_ROOT_UID -#define RPC_MACHINE_CRED_GROUPID GLOBAL_ROOT_GID - struct generic_cred { struct rpc_cred gc_base; struct auth_cred acred; @@ -57,8 +54,6 @@ EXPORT_SYMBOL_GPL(rpc_lookup_cred_nonblock); struct rpc_cred *rpc_lookup_machine_cred(const char *service_name) { struct auth_cred acred = { - .uid = RPC_MACHINE_CRED_USERID, - .gid = RPC_MACHINE_CRED_GROUPID, .principal = service_name, .machine_cred = 1, .cred = get_task_cred(&init_task), @@ -85,8 +80,8 @@ static struct rpc_cred *generic_bind_cred(struct rpc_task *task, static int generic_hash_cred(struct auth_cred *acred, unsigned int hashbits) { - return hash_64(from_kgid(&init_user_ns, acred->gid) | - ((u64)from_kuid(&init_user_ns, acred->uid) << + return hash_64(from_kgid(&init_user_ns, acred->cred->fsgid) | + ((u64)from_kuid(&init_user_ns, acred->cred->fsuid) << (sizeof(gid_t) * 8)), hashbits); } @@ -111,8 +106,6 @@ generic_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, g rpcauth_init_cred(&gcred->gc_base, acred, &generic_auth, &generic_credops); gcred->gc_base.cr_flags = 1UL << RPCAUTH_CRED_UPTODATE; - gcred->acred.uid = acred->uid; - gcred->acred.gid = acred->gid; gcred->acred.cred = gcred->gc_base.cr_cred; gcred->acred.ac_flags = 0; gcred->acred.machine_cred = acred->machine_cred; @@ -121,8 +114,8 @@ generic_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, g dprintk("RPC: allocated %s cred %p for uid %d gid %d\n", gcred->acred.machine_cred ? "machine" : "generic", gcred, - from_kuid(&init_user_ns, acred->uid), - from_kgid(&init_user_ns, acred->gid)); + from_kuid(&init_user_ns, acred->cred->fsuid), + from_kgid(&init_user_ns, acred->cred->fsgid)); return &gcred->gc_base; } @@ -154,8 +147,8 @@ machine_cred_match(struct auth_cred *acred, struct generic_cred *gcred, int flag { if (!gcred->acred.machine_cred || gcred->acred.principal != acred->principal || - !uid_eq(gcred->acred.uid, acred->uid) || - !gid_eq(gcred->acred.gid, acred->gid)) + !uid_eq(gcred->acred.cred->fsuid, acred->cred->fsuid) || + !gid_eq(gcred->acred.cred->fsgid, acred->cred->fsgid)) return 0; return 1; } @@ -173,8 +166,8 @@ generic_match(struct auth_cred *acred, struct rpc_cred *cred, int flags) if (acred->machine_cred) return machine_cred_match(acred, gcred, flags); - if (!uid_eq(gcred->acred.uid, acred->uid) || - !gid_eq(gcred->acred.gid, acred->gid) || + if (!uid_eq(gcred->acred.cred->fsuid, acred->cred->fsuid) || + !gid_eq(gcred->acred.cred->fsgid, acred->cred->fsgid) || gcred->acred.machine_cred != 0) goto out_nomatch; diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index 76e6086081b7..97513cf5ec4e 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1307,7 +1307,7 @@ gss_destroy_cred(struct rpc_cred *cred) static int gss_hash_cred(struct auth_cred *acred, unsigned int hashbits) { - return hash_64(from_kuid(&init_user_ns, acred->uid), hashbits); + return hash_64(from_kuid(&init_user_ns, acred->cred->fsuid), hashbits); } /* @@ -1327,7 +1327,7 @@ gss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, gfp_t int err = -ENOMEM; dprintk("RPC: %s for uid %d, flavor %d\n", - __func__, from_kuid(&init_user_ns, acred->uid), + __func__, from_kuid(&init_user_ns, acred->cred->fsuid), auth->au_flavor); if (!(cred = kzalloc(sizeof(*cred), gfp))) @@ -1468,7 +1468,7 @@ gss_match(struct auth_cred *acred, struct rpc_cred *rc, int flags) } if (gss_cred->gc_principal != NULL) return 0; - ret = uid_eq(rc->cr_uid, acred->uid); + ret = uid_eq(rc->cr_uid, acred->cred->fsuid); check_expire: if (ret == 0) @@ -1553,7 +1553,6 @@ static int gss_renew_cred(struct rpc_task *task) gc_base); struct rpc_auth *auth = oldcred->cr_auth; struct auth_cred acred = { - .uid = oldcred->cr_uid, .cred = oldcred->cr_cred, .principal = gss_cred->gc_principal, .machine_cred = (gss_cred->gc_principal != NULL ? 1 : 0), diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c index 93c4d6df7158..d9d2f74ee44b 100644 --- a/net/sunrpc/auth_unix.c +++ b/net/sunrpc/auth_unix.c @@ -48,8 +48,8 @@ unx_destroy(struct rpc_auth *auth) static int unx_hash_cred(struct auth_cred *acred, unsigned int hashbits) { - return hash_64(from_kgid(&init_user_ns, acred->gid) | - ((u64)from_kuid(&init_user_ns, acred->uid) << + return hash_64(from_kgid(&init_user_ns, acred->cred->fsgid) | + ((u64)from_kuid(&init_user_ns, acred->cred->fsuid) << (sizeof(gid_t) * 8)), hashbits); } @@ -70,8 +70,8 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, gfp_t unsigned int i; dprintk("RPC: allocating UNIX cred for uid %d gid %d\n", - from_kuid(&init_user_ns, acred->uid), - from_kgid(&init_user_ns, acred->gid)); + from_kuid(&init_user_ns, acred->cred->fsuid), + from_kgid(&init_user_ns, acred->cred->fsgid)); if (!(cred = kmalloc(sizeof(*cred), gfp))) return ERR_PTR(-ENOMEM); @@ -84,7 +84,7 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags, gfp_t if (groups > UNX_NGROUPS) groups = UNX_NGROUPS; - cred->uc_gid = acred->gid; + cred->uc_gid = acred->cred->fsgid; for (i = 0; i < groups; i++) cred->uc_gids[i] = acred->cred->group_info->gid[i]; if (i < UNX_NGROUPS) @@ -127,7 +127,7 @@ unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags) unsigned int i; - if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid)) + if (!uid_eq(cred->uc_uid, acred->cred->fsuid) || !gid_eq(cred->uc_gid, acred->cred->fsgid)) return 0; if (acred->cred && acred->cred->group_info != NULL)