diff options
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 51 |
1 files changed, 19 insertions, 32 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index ad5aef4995aa..71a199435ca9 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1031,27 +1031,14 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry) } /* - * Return the intent data that applies to this particular path component - * - * Note that the current set of intents only apply to the very last - * component of the path and none of them is set before that last - * component. - */ -static inline unsigned int nfs_lookup_check_intent(unsigned int flags, - unsigned int mask) -{ - return flags & mask; -} - -/* * Use intent information to check whether or not we're going to do * an O_EXCL create using this path component. */ -static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd) +static int nfs_is_exclusive_create(struct inode *dir, unsigned int flags) { if (NFS_PROTO(dir)->version == 2) return 0; - return nd && nfs_lookup_check_intent(nd->flags, LOOKUP_EXCL); + return flags & LOOKUP_EXCL; } /* @@ -1063,20 +1050,18 @@ static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd) * */ static inline -int nfs_lookup_verify_inode(struct inode *inode, struct nameidata *nd) +int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags) { struct nfs_server *server = NFS_SERVER(inode); if (IS_AUTOMOUNT(inode)) return 0; /* VFS wants an on-the-wire revalidation */ - if (nd->flags & LOOKUP_REVAL) + if (flags & LOOKUP_REVAL) goto out_force; /* This is an open(2) */ - if (nfs_lookup_check_intent(nd->flags, LOOKUP_OPEN) != 0 && - !(server->flags & NFS_MOUNT_NOCTO) && - (S_ISREG(inode->i_mode) || - S_ISDIR(inode->i_mode))) + if ((flags & LOOKUP_OPEN) && !(server->flags & NFS_MOUNT_NOCTO) && + (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) goto out_force; return 0; out_force: @@ -1092,10 +1077,10 @@ out_force: */ static inline int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry, - struct nameidata *nd) + unsigned int flags) { /* Don't revalidate a negative dentry if we're creating a new file */ - if (nd != NULL && nfs_lookup_check_intent(nd->flags, LOOKUP_CREATE) != 0) + if (flags & LOOKUP_CREATE) return 0; if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) return 1; @@ -1115,6 +1100,7 @@ int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry, */ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) { + unsigned int flags = nd->flags; struct inode *dir; struct inode *inode; struct dentry *parent; @@ -1122,7 +1108,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) struct nfs_fattr *fattr = NULL; int error; - if (nd->flags & LOOKUP_RCU) + if (flags & LOOKUP_RCU) return -ECHILD; parent = dget_parent(dentry); @@ -1131,7 +1117,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) inode = dentry->d_inode; if (!inode) { - if (nfs_neg_need_reval(dir, dentry, nd)) + if (nfs_neg_need_reval(dir, dentry, flags)) goto out_bad; goto out_valid_noent; } @@ -1147,8 +1133,8 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) goto out_set_verifier; /* Force a full look up iff the parent directory has changed */ - if (!nfs_is_exclusive_create(dir, nd) && nfs_check_verifier(dir, dentry)) { - if (nfs_lookup_verify_inode(inode, nd)) + if (!nfs_is_exclusive_create(dir, flags) && nfs_check_verifier(dir, dentry)) { + if (nfs_lookup_verify_inode(inode, flags)) goto out_zap_parent; goto out_valid; } @@ -1306,7 +1292,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru * If we're doing an exclusive create, optimize away the lookup * but don't hash the dentry. */ - if (nfs_is_exclusive_create(dir, nd)) { + if (nd && nfs_is_exclusive_create(dir, nd->flags)) { d_instantiate(dentry, NULL); res = NULL; goto out; @@ -1507,15 +1493,16 @@ no_open: static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) { + unsigned int flags = nd->flags; struct dentry *parent = NULL; struct inode *inode; struct inode *dir; int ret = 0; - if (nd->flags & LOOKUP_RCU) + if (flags & LOOKUP_RCU) return -ECHILD; - if (!(nd->flags & LOOKUP_OPEN) || (nd->flags & LOOKUP_DIRECTORY)) + if (!(flags & LOOKUP_OPEN) || (flags & LOOKUP_DIRECTORY)) goto no_open; if (d_mountpoint(dentry)) goto no_open; @@ -1528,7 +1515,7 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) * optimize away revalidation of negative dentries. */ if (inode == NULL) { - if (!nfs_neg_need_reval(dir, dentry, nd)) + if (!nfs_neg_need_reval(dir, dentry, flags)) ret = 1; goto out; } @@ -1537,7 +1524,7 @@ static int nfs4_lookup_revalidate(struct dentry *dentry, struct nameidata *nd) if (!S_ISREG(inode->i_mode)) goto no_open_dput; /* We cannot do exclusive creation on a positive dentry */ - if (nd && nd->flags & LOOKUP_EXCL) + if (flags & LOOKUP_EXCL) goto no_open_dput; /* Let f_op->open() actually open (and revalidate) the file */ |