diff options
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre/lustre_idl.h | 1 | ||||
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/namei.c | 36 |
2 files changed, 35 insertions, 2 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h index acb2806d8c60..72eaee95c6b8 100644 --- a/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h +++ b/drivers/staging/lustre/lustre/include/lustre/lustre_idl.h @@ -1987,6 +1987,7 @@ void lustre_swab_generic_32s(__u32 *val); #define DISP_OPEN_LOCK 0x02000000 #define DISP_OPEN_LEASE 0x04000000 #define DISP_OPEN_STRIPE 0x08000000 +#define DISP_OPEN_DENY 0x10000000 /* INODE LOCK PARTS */ #define MDS_INODELOCK_LOOKUP 0x000001 /* For namespace, dentry etc, and also diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c index 1dd5df549079..d55b14baed5a 100644 --- a/drivers/staging/lustre/lustre/llite/namei.c +++ b/drivers/staging/lustre/lustre/llite/namei.c @@ -505,8 +505,8 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry, struct lookup_intent lookup_it = { .it_op = IT_LOOKUP }; struct dentry *save = dentry, *retval; struct ptlrpc_request *req = NULL; + struct md_op_data *op_data = NULL; struct inode *inode; - struct md_op_data *op_data; __u32 opc; int rc; @@ -549,7 +549,36 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry, rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req, &ll_md_blocking_ast, 0); - ll_finish_md_op_data(op_data); + /* + * If the MDS allows the client to chgrp (CFS_SETGRP_PERM), but the + * client does not know which suppgid should be sent to the MDS, or + * some other(s) changed the target file's GID after this RPC sent + * to the MDS with the suppgid as the original GID, then we should + * try again with right suppgid. + */ + if (rc == -EACCES && it->it_op & IT_OPEN && + it_disposition(it, DISP_OPEN_DENY)) { + struct mdt_body *body; + + LASSERT(req); + + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); + if (op_data->op_suppgids[0] == body->mbo_gid || + op_data->op_suppgids[1] == body->mbo_gid || + !in_group_p(make_kgid(&init_user_ns, body->mbo_gid))) { + retval = ERR_PTR(-EACCES); + goto out; + } + + fid_zero(&op_data->op_fid2); + op_data->op_suppgids[1] = body->mbo_gid; + ptlrpc_req_finished(req); + req = NULL; + ll_intent_release(it); + rc = md_intent_lock(ll_i2mdexp(parent), op_data, it, &req, + ll_md_blocking_ast, 0); + } + if (rc < 0) { retval = ERR_PTR(rc); goto out; @@ -575,6 +604,9 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry, else retval = dentry; out: + if (op_data && !IS_ERR(op_data)) + ll_finish_md_op_data(op_data); + ptlrpc_req_finished(req); return retval; } |