From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Date: Thu, 14 Mar 2019 11:11:52 +1100 Subject: [lustre-devel] [PATCH 31/32] lustre: mdc: create mdc_acl.c In-Reply-To: <155252182126.26912.1842463462595601611.stgit@noble.brown> References: <155252182126.26912.1842463462595601611.stgit@noble.brown> Message-ID: <155252231217.26912.1851699923338684554.stgit@noble.brown> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org This new C file contains acl related code so it can be conditionally compiled. The only use of CONFIG_LUSTRE_FS_POSIX_ACL in a C file is now in xattr.c which is not convenient to avoid. Signed-off-by: NeilBrown --- drivers/staging/lustre/lustre/mdc/Makefile | 1 drivers/staging/lustre/lustre/mdc/mdc_acl.c | 48 +++++++++++++++++++ drivers/staging/lustre/lustre/mdc/mdc_internal.h | 10 ++++ drivers/staging/lustre/lustre/mdc/mdc_request.c | 57 +--------------------- 4 files changed, 61 insertions(+), 55 deletions(-) create mode 100644 drivers/staging/lustre/lustre/mdc/mdc_acl.c diff --git a/drivers/staging/lustre/lustre/mdc/Makefile b/drivers/staging/lustre/lustre/mdc/Makefile index 5f48e91b9839..137a4413c268 100644 --- a/drivers/staging/lustre/lustre/mdc/Makefile +++ b/drivers/staging/lustre/lustre/mdc/Makefile @@ -3,3 +3,4 @@ ccflags-y += -I$(srctree)/drivers/staging/lustre/lustre/include obj-$(CONFIG_LUSTRE_FS) += mdc.o mdc-y := mdc_changelog.o mdc_request.o mdc_reint.o mdc_lib.o mdc_locks.o lproc_mdc.o +mdc-$(CONFIG_LUSTRE_FS_POSIX_ACL) += mdc_acl.o diff --git a/drivers/staging/lustre/lustre/mdc/mdc_acl.c b/drivers/staging/lustre/lustre/mdc/mdc_acl.c new file mode 100644 index 000000000000..045235ad703a --- /dev/null +++ b/drivers/staging/lustre/lustre/mdc/mdc_acl.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +#include "mdc_internal.h" + +int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md) +{ + struct req_capsule *pill = &req->rq_pill; + struct mdt_body *body = md->body; + struct posix_acl *acl; + void *buf; + int rc; + + /* for ACL, it's possible that FLACL is set but aclsize is zero. + * only when aclsize != 0 there's an actual segment for ACL + * in reply buffer. + */ + if (!body->mbo_aclsize) { + md->posix_acl = NULL; + return 0; + } + + buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize); + + if (!buf) + return -EPROTO; + + acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize); + if (!acl) + return 0; + + if (IS_ERR(acl)) { + rc = PTR_ERR(acl); + CERROR("convert xattr to acl: %d\n", rc); + return rc; + } + + rc = posix_acl_valid(&init_user_ns, acl); + if (rc) { + CERROR("validate acl: %d\n", rc); + posix_acl_release(acl); + return rc; + } + + md->posix_acl = acl; + return 0; +} diff --git a/drivers/staging/lustre/lustre/mdc/mdc_internal.h b/drivers/staging/lustre/lustre/mdc/mdc_internal.h index 2b849e8166b2..20beff384add 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_internal.h +++ b/drivers/staging/lustre/lustre/mdc/mdc_internal.h @@ -141,6 +141,16 @@ static inline int mdc_prep_elc_req(struct obd_export *exp, count); } +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL +int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md); +#else +static inline +int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md) +{ + return 0; +} +#endif + static inline unsigned long hash_x_index(u64 hash, int hash64) { if (BITS_PER_LONG == 32 && hash64) diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c index a0b74244f295..7d4450ef8740 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_request.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c @@ -408,46 +408,6 @@ static int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid, req); } -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL -static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md) -{ - struct req_capsule *pill = &req->rq_pill; - struct mdt_body *body = md->body; - struct posix_acl *acl; - void *buf; - int rc; - - if (!body->mbo_aclsize) - return 0; - - buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->mbo_aclsize); - - if (!buf) - return -EPROTO; - - acl = posix_acl_from_xattr(&init_user_ns, buf, body->mbo_aclsize); - if (!acl) - return 0; - - if (IS_ERR(acl)) { - rc = PTR_ERR(acl); - CERROR("convert xattr to acl: %d\n", rc); - return rc; - } - - rc = posix_acl_valid(&init_user_ns, acl); - if (rc) { - CERROR("validate acl: %d\n", rc); - posix_acl_release(acl); - return rc; - } - - md->posix_acl = acl; - return 0; -} -#else -#define mdc_unpack_acl(req, md) 0 -#endif static int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req, @@ -526,21 +486,8 @@ static int mdc_get_lustre_md(struct obd_export *exp, } rc = 0; - if (md->body->mbo_valid & OBD_MD_FLACL) { - /* for ACL, it's possible that FLACL is set but aclsize is zero. - * only when aclsize != 0 there's an actual segment for ACL - * in reply buffer. - */ - if (md->body->mbo_aclsize) { - rc = mdc_unpack_acl(req, md); - if (rc) - goto out; -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL - } else { - md->posix_acl = NULL; -#endif - } - } + if (md->body->mbo_valid & OBD_MD_FLACL) + rc = mdc_unpack_acl(req, md); out: if (rc)