From: Miklos Szeredi Introduce path_link(). Make vfs_link() static. Signed-off-by: Miklos Szeredi --- fs/ecryptfs/inode.c | 10 +++++----- fs/namei.c | 26 ++++++++++++++++++-------- fs/nfsd/vfs.c | 14 ++++---------- include/linux/fs.h | 2 +- 4 files changed, 28 insertions(+), 24 deletions(-) Index: linux-2.6/fs/ecryptfs/inode.c =================================================================== --- linux-2.6.orig/fs/ecryptfs/inode.c 2008-07-23 00:10:24.000000000 +0200 +++ linux-2.6/fs/ecryptfs/inode.c 2008-07-23 00:10:25.000000000 +0200 @@ -379,7 +379,7 @@ static int ecryptfs_link(struct dentry * { struct dentry *lower_old_dentry; struct dentry *lower_new_dentry; - struct dentry *lower_dir_dentry; + struct path lower_dir; u64 file_size_save; int rc; @@ -388,9 +388,9 @@ static int ecryptfs_link(struct dentry * lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry); dget(lower_old_dentry); dget(lower_new_dentry); - lower_dir_dentry = lock_parent(lower_new_dentry); - rc = vfs_link(lower_old_dentry, lower_dir_dentry->d_inode, - lower_new_dentry); + lower_dir.mnt = ecryptfs_dentry_to_lower_mnt(new_dentry); + lower_dir.dentry = lock_parent(lower_new_dentry); + rc = path_link(lower_old_dentry, &lower_dir, lower_new_dentry); if (rc || !lower_new_dentry->d_inode) goto out_lock; rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb, 0); @@ -402,7 +402,7 @@ static int ecryptfs_link(struct dentry * ecryptfs_inode_to_lower(old_dentry->d_inode)->i_nlink; i_size_write(new_dentry->d_inode, file_size_save); out_lock: - unlock_dir(lower_dir_dentry); + unlock_dir(lower_dir.dentry); dput(lower_new_dentry); dput(lower_old_dentry); d_drop(lower_old_dentry); Index: linux-2.6/fs/namei.c =================================================================== --- linux-2.6.orig/fs/namei.c 2008-07-23 00:10:24.000000000 +0200 +++ linux-2.6/fs/namei.c 2008-07-23 00:10:25.000000000 +0200 @@ -2437,7 +2437,7 @@ asmlinkage long sys_symlink(const char _ return sys_symlinkat(oldname, AT_FDCWD, newname); } -int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) +static int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) { struct inode *inode = old_dentry->d_inode; int error; @@ -2475,6 +2475,22 @@ int vfs_link(struct dentry *old_dentry, return error; } +int path_link(struct dentry *old_dentry, struct path *dir_path, + struct dentry *new_dentry) +{ + int error = mnt_want_write(dir_path->mnt); + + if (!error) { + struct inode *dir = dir_path->dentry->d_inode; + + error = vfs_link(old_dentry, dir, new_dentry); + mnt_drop_write(dir_path->mnt); + } + + return error; +} +EXPORT_SYMBOL(path_link); + /* * Hardlinks are often used in delicate situations. We avoid * security-related surprises by not following symlinks on the @@ -2516,12 +2532,7 @@ asmlinkage long sys_linkat(int olddfd, c error = PTR_ERR(new_dentry); if (IS_ERR(new_dentry)) goto out_unlock; - error = mnt_want_write(nd.path.mnt); - if (error) - goto out_dput; - error = vfs_link(old_path.dentry, nd.path.dentry->d_inode, new_dentry); - mnt_drop_write(nd.path.mnt); -out_dput: + error = path_link(old_path.dentry, &nd.path, new_dentry); dput(new_dentry); out_unlock: mutex_unlock(&nd.path.dentry->d_inode->i_mutex); @@ -2941,7 +2952,6 @@ EXPORT_SYMBOL(vfs_permission); EXPORT_SYMBOL(file_permission); EXPORT_SYMBOL(unlock_rename); EXPORT_SYMBOL(vfs_follow_link); -EXPORT_SYMBOL(vfs_link); EXPORT_SYMBOL(generic_permission); EXPORT_SYMBOL(vfs_readlink); EXPORT_SYMBOL(vfs_rename); Index: linux-2.6/fs/nfsd/vfs.c =================================================================== --- linux-2.6.orig/fs/nfsd/vfs.c 2008-07-23 00:10:24.000000000 +0200 +++ linux-2.6/fs/nfsd/vfs.c 2008-07-23 00:10:25.000000000 +0200 @@ -1582,8 +1582,9 @@ __be32 nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *name, int len, struct svc_fh *tfhp) { + struct path dir_path; struct dentry *ddir, *dnew, *dold; - struct inode *dirp, *dest; + struct inode *dest; __be32 err; int host_err; @@ -1603,7 +1604,6 @@ nfsd_link(struct svc_rqst *rqstp, struct fh_lock_nested(ffhp, I_MUTEX_PARENT); ddir = ffhp->fh_dentry; - dirp = ddir->d_inode; dnew = lookup_one_len(name, ddir, len); host_err = PTR_ERR(dnew); @@ -1613,12 +1613,8 @@ nfsd_link(struct svc_rqst *rqstp, struct dold = tfhp->fh_dentry; dest = dold->d_inode; - host_err = mnt_want_write(tfhp->fh_export->ex_path.mnt); - if (host_err) { - err = nfserrno(host_err); - goto out_dput; - } - host_err = vfs_link(dold, dirp, dnew); + fh_to_path(ffhp, &dir_path); + host_err = path_link(dold, &dir_path, dnew); if (!host_err) { if (EX_ISSYNC(ffhp->fh_export)) { err = nfserrno(nfsd_sync_dir(ddir)); @@ -1631,8 +1627,6 @@ nfsd_link(struct svc_rqst *rqstp, struct else err = nfserrno(host_err); } - mnt_drop_write(tfhp->fh_export->ex_path.mnt); -out_dput: dput(dnew); out_unlock: fh_unlock(ffhp); Index: linux-2.6/include/linux/fs.h =================================================================== --- linux-2.6.orig/include/linux/fs.h 2008-07-23 00:10:24.000000000 +0200 +++ linux-2.6/include/linux/fs.h 2008-07-23 00:10:25.000000000 +0200 @@ -1130,7 +1130,7 @@ extern int path_create(struct path *, st extern int path_mkdir(struct path *, struct dentry *, int); extern int path_mknod(struct path *, struct dentry *, int, dev_t); extern int path_symlink(struct path *, struct dentry *, const char *); -extern int vfs_link(struct dentry *, struct inode *, struct dentry *); +extern int path_link(struct dentry *, struct path *, struct dentry *); extern int path_rmdir(struct path *, struct dentry *); extern int path_unlink(struct path *, struct dentry *); extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/