diff options
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 06e0bf092ba9..5f1af4cd1a33 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -435,11 +435,11 @@ int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry) return 0; nfsi = NFS_I(inode); - if (entry->fattr->fileid == nfsi->fileid) - return 1; - if (nfs_compare_fh(entry->fh, &nfsi->fh) == 0) - return 1; - return 0; + if (entry->fattr->fileid != nfsi->fileid) + return 0; + if (entry->fh->size && nfs_compare_fh(entry->fh, &nfsi->fh) != 0) + return 0; + return 1; } static @@ -496,6 +496,14 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry) return; if (!(entry->fattr->valid & NFS_ATTR_FATTR_FSID)) return; + if (filename.len == 0) + return; + /* Validate that the name doesn't contain any illegal '\0' */ + if (strnlen(filename.name, filename.len) != filename.len) + return; + /* ...or '/' */ + if (strnchr(filename.name, filename.len, '/')) + return; if (filename.name[0] == '.') { if (filename.len == 1) return; @@ -517,6 +525,8 @@ again: &entry->fattr->fsid)) goto out; if (nfs_same_file(dentry, entry)) { + if (!entry->fh->size) + goto out; nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); status = nfs_refresh_inode(d_inode(dentry), entry->fattr); if (!status) @@ -529,6 +539,10 @@ again: goto again; } } + if (!entry->fh->size) { + d_lookup_done(dentry); + goto out; + } inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr, entry->label); alias = d_splice_alias(inode, dentry); |