From 0989a7889695831e49e2c53c1884f52645516a90 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Tue, 17 Jul 2007 04:04:44 -0700 Subject: [PATCH] knfsd: nfsd: provide export lookup wrappers which take a svc_rqst Split the callers of exp_get_by_name(), exp_find(), and exp_parent() into those that are processing requests and those that are doing other stuff (like looking up filehandles for mountd). No change in behavior, just a (fairly pointless, on its own) cleanup. (Note this has the effect of making nfsd_cross_mnt() pass rqstp->rq_client instead of exp->ex_client into exp_find_by_name(). However, the two should have the same value at this point.) Signed-off-by: "J. Bruce Fields" Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfsd/export.c | 28 +++++++++++++++++++++++++++- fs/nfsd/nfsfh.c | 5 ++--- fs/nfsd/vfs.c | 5 ++--- include/linux/nfsd/export.h | 7 +++++++ 4 files changed, 38 insertions(+), 7 deletions(-) diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index af6abb2529..9b569af695 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -1228,6 +1228,32 @@ exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv, return exp; } +/* + * Called from functions that handle requests; functions that do work on + * behalf of mountd are passed a single client name to use, and should + * use exp_get_by_name() or exp_find(). + */ +struct svc_export * +rqst_exp_get_by_name(struct svc_rqst *rqstp, struct vfsmount *mnt, + struct dentry *dentry) +{ + return exp_get_by_name(rqstp->rq_client, mnt, dentry, + &rqstp->rq_chandle); +} + +struct svc_export * +rqst_exp_find(struct svc_rqst *rqstp, int fsid_type, u32 *fsidv) +{ + return exp_find(rqstp->rq_client, fsid_type, fsidv, + &rqstp->rq_chandle); +} + +struct svc_export * +rqst_exp_parent(struct svc_rqst *rqstp, struct vfsmount *mnt, + struct dentry *dentry) +{ + return exp_parent(rqstp->rq_client, mnt, dentry, &rqstp->rq_chandle); +} /* * Called when we need the filehandle for the root of the pseudofs, @@ -1243,7 +1269,7 @@ exp_pseudoroot(struct svc_rqst *rqstp, struct svc_fh *fhp) mk_fsid(FSID_NUM, fsidv, 0, 0, 0, NULL); - exp = exp_find(rqstp->rq_client, FSID_NUM, fsidv, rqstp->rq_chandle); + exp = rqst_exp_find(rqstp, FSID_NUM, fsidv); if (PTR_ERR(exp) == -ENOENT) return nfserr_perm; if (IS_ERR(exp)) diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index 89f9041a77..180e068ea0 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -145,7 +145,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access) fh->fh_fsid[1] = fh->fh_fsid[2]; } if ((data_left -= len)<0) goto out; - exp = exp_find(rqstp->rq_client, fh->fh_fsid_type, datap, &rqstp->rq_chandle); + exp = rqst_exp_find(rqstp, fh->fh_fsid_type, datap); datap += len; } else { dev_t xdev; @@ -156,8 +156,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access) xdev = old_decode_dev(fh->ofh_xdev); xino = u32_to_ino_t(fh->ofh_xino); mk_fsid(FSID_DEV, tfh, xdev, xino, 0, NULL); - exp = exp_find(rqstp->rq_client, FSID_DEV, tfh, - &rqstp->rq_chandle); + exp = rqst_exp_find(rqstp, FSID_DEV, tfh); } error = nfserr_stale; diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index ec6aaf8b0e..65043af232 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -113,7 +113,7 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp, while (follow_down(&mnt,&mounts)&&d_mountpoint(mounts)); - exp2 = exp_get_by_name(exp->ex_client, mnt, mounts, &rqstp->rq_chandle); + exp2 = rqst_exp_get_by_name(rqstp, mnt, mounts); if (IS_ERR(exp2)) { err = PTR_ERR(exp2); dput(mounts); @@ -188,8 +188,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name, dput(dentry); dentry = dp; - exp2 = exp_parent(exp->ex_client, mnt, dentry, - &rqstp->rq_chandle); + exp2 = rqst_exp_parent(rqstp, mnt, dentry); if (PTR_ERR(exp2) == -ENOENT) { dput(dentry); dentry = dget(dparent); diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 5ed4f277ee..1ba53e5247 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -129,10 +129,16 @@ struct svc_export * exp_get_by_name(struct auth_domain *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp); +struct svc_export * rqst_exp_get_by_name(struct svc_rqst *, + struct vfsmount *, + struct dentry *); struct svc_export * exp_parent(struct auth_domain *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp); +struct svc_export * rqst_exp_parent(struct svc_rqst *, + struct vfsmount *mnt, + struct dentry *dentry); int exp_rootfh(struct auth_domain *, char *path, struct knfsd_fh *, int maxsize); __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *); @@ -152,6 +158,7 @@ static inline void exp_get(struct svc_export *exp) extern struct svc_export * exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp); +struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *); #endif /* __KERNEL__ */ -- 2.39.5