[PATCH] switch nfsd to kern_path()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

4 files changed, 56 insertions, 58 deletions

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 2fa61f003fff..676201dbdf84 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -162,20 +162,18 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
                         cache_put(&ek->h, &svc_expkey_cache);
                 else err = -ENOMEM;
         } else {
-                struct nameidata nd;
-                err = path_lookup(buf, 0, &nd);
+                err = kern_path(buf, 0, &key.ek_path);
                 if (err)
                         goto out;
 
                 dprintk("Found the path %s\n", buf);
-                key.ek_path = nd.path;
 
                 ek = svc_expkey_update(&key, ek);
                 if (ek)
                         cache_put(&ek->h, &svc_expkey_cache);
                 else
                         err = -ENOMEM;
-                path_put(&nd.path);
+                path_put(&key.ek_path);
         }
         cache_flush();
  out:
@@ -991,7 +989,7 @@ exp_export(struct nfsctl_export *nxp)
         struct svc_export       *exp = NULL;
         struct svc_export       new;
         struct svc_expkey       *fsid_key = NULL;
-        struct nameidata nd;
+        struct path path;
         int             err;
 
         /* Consistency check */
@@ -1014,12 +1012,12 @@ exp_export(struct nfsctl_export *nxp)
 
 
         /* Look up the dentry */
-        err = path_lookup(nxp->ex_path, 0, &nd);
+        err = kern_path(nxp->ex_path, 0, &path);
         if (err)
                 goto out_put_clp;
         err = -EINVAL;
 
-        exp = exp_get_by_name(clp, nd.path.mnt, nd.path.dentry, NULL);
+        exp = exp_get_by_name(clp, path.mnt, path.dentry, NULL);
 
         memset(&new, 0, sizeof(new));
 
@@ -1027,8 +1025,8 @@ exp_export(struct nfsctl_export *nxp)
         if ((nxp->ex_flags & NFSEXP_FSID) &&
             (!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
             fsid_key->ek_path.mnt &&
-            (fsid_key->ek_path.mnt != nd.path.mnt ||
-             fsid_key->ek_path.dentry != nd.path.dentry))
+            (fsid_key->ek_path.mnt != path.mnt ||
+             fsid_key->ek_path.dentry != path.dentry))
                 goto finish;
 
         if (!IS_ERR(exp)) {
@@ -1044,7 +1042,7 @@ exp_export(struct nfsctl_export *nxp)
                 goto finish;
         }
 
-        err = check_export(nd.path.dentry->d_inode, nxp->ex_flags, NULL);
+        err = check_export(path.dentry->d_inode, nxp->ex_flags, NULL);
         if (err) goto finish;
 
         err = -ENOMEM;
@@ -1057,7 +1055,7 @@ exp_export(struct nfsctl_export *nxp)
         if (!new.ex_pathname)
                 goto finish;
         new.ex_client = clp;
-        new.ex_path = nd.path;
+        new.ex_path = path;
         new.ex_flags = nxp->ex_flags;
         new.ex_anon_uid = nxp->ex_anon_uid;
         new.ex_anon_gid = nxp->ex_anon_gid;
@@ -1083,7 +1081,7 @@ finish:
                 exp_put(exp);
         if (fsid_key && !IS_ERR(fsid_key))
                 cache_put(&fsid_key->h, &svc_expkey_cache);
-        path_put(&nd.path);
+        path_put(&path);
 out_put_clp:
         auth_domain_put(clp);
 out_unlock:
@@ -1114,7 +1112,7 @@ exp_unexport(struct nfsctl_export *nxp)
 {
         struct auth_domain *dom;
         svc_export *exp;
-        struct nameidata nd;
+        struct path path;
         int             err;
 
         /* Consistency check */
@@ -1131,13 +1129,13 @@ exp_unexport(struct nfsctl_export *nxp)
                 goto out_unlock;
         }
 
-        err = path_lookup(nxp->ex_path, 0, &nd);
+        err = kern_path(nxp->ex_path, 0, &path);
         if (err)
                 goto out_domain;
 
         err = -EINVAL;
-        exp = exp_get_by_name(dom, nd.path.mnt, nd.path.dentry, NULL);
-        path_put(&nd.path);
+        exp = exp_get_by_name(dom, path.mnt, path.dentry, NULL);
+        path_put(&path);
         if (IS_ERR(exp))
                 goto out_domain;
 
@@ -1159,26 +1157,26 @@ out_unlock:
  * since its harder to fool a kernel module than a user space program.
  */
 int
-exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
+exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
 {
         struct svc_export       *exp;
-        struct nameidata        nd;
+        struct path             path;
         struct inode            *inode;
         struct svc_fh           fh;
         int                     err;
 
         err = -EPERM;
         /* NB: we probably ought to check that it's NUL-terminated */
-        if (path_lookup(path, 0, &nd)) {
-                printk("nfsd: exp_rootfh path not found %s", path);
+        if (kern_path(name, 0, &path)) {
+                printk("nfsd: exp_rootfh path not found %s", name);
                 return err;
         }
-        inode = nd.path.dentry->d_inode;
+        inode = path.dentry->d_inode;
 
         dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
-                 path, nd.path.dentry, clp->name,
+                 name, path.dentry, clp->name,
                  inode->i_sb->s_id, inode->i_ino);
-        exp = exp_parent(clp, nd.path.mnt, nd.path.dentry, NULL);
+        exp = exp_parent(clp, path.mnt, path.dentry, NULL);
         if (IS_ERR(exp)) {
                 err = PTR_ERR(exp);
                 goto out;
@@ -1188,7 +1186,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
          * fh must be initialized before calling fh_compose
          */
         fh_init(&fh, maxsize);
-        if (fh_compose(&fh, exp, nd.path.dentry, NULL))
+        if (fh_compose(&fh, exp, path.dentry, NULL))
                 err = -EINVAL;
         else
                 err = 0;
@@ -1196,7 +1194,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
         fh_put(&fh);
         exp_put(exp);
 out:
-        path_put(&nd.path);
+        path_put(&path);
         return err;
 }
 
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 145b3c877a27..bb93946ace22 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -51,7 +51,7 @@
 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 
 /* Globals */
-static struct nameidata rec_dir;
+static struct path rec_dir;
 static int rec_dir_init = 0;
 
 static void
@@ -121,9 +121,9 @@ out_no_tfm:
 static void
 nfsd4_sync_rec_dir(void)
 {
-        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
-        nfsd_sync_dir(rec_dir.path.dentry);
-        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
+        nfsd_sync_dir(rec_dir.dentry);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
 }
 
 int
@@ -143,9 +143,9 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
         nfs4_save_user(&uid, &gid);
 
         /* lock the parent */
-        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
 
-        dentry = lookup_one_len(dname, rec_dir.path.dentry, HEXDIR_LEN-1);
+        dentry = lookup_one_len(dname, rec_dir.dentry, HEXDIR_LEN-1);
         if (IS_ERR(dentry)) {
                 status = PTR_ERR(dentry);
                 goto out_unlock;
@@ -155,15 +155,15 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
                 dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
                 goto out_put;
         }
-        status = mnt_want_write(rec_dir.path.mnt);
+        status = mnt_want_write(rec_dir.mnt);
         if (status)
                 goto out_put;
-        status = vfs_mkdir(rec_dir.path.dentry->d_inode, dentry, S_IRWXU);
-        mnt_drop_write(rec_dir.path.mnt);
+        status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
+        mnt_drop_write(rec_dir.mnt);
 out_put:
         dput(dentry);
 out_unlock:
-        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
         if (status == 0) {
                 clp->cl_firststate = 1;
                 nfsd4_sync_rec_dir();
@@ -226,7 +226,7 @@ nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
 
         nfs4_save_user(&uid, &gid);
 
-        filp = dentry_open(dget(dir), mntget(rec_dir.path.mnt), O_RDONLY);
+        filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY);
         status = PTR_ERR(filp);
         if (IS_ERR(filp))
                 goto out;
@@ -291,9 +291,9 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
 
         dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
 
-        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
-        dentry = lookup_one_len(name, rec_dir.path.dentry, namlen);
-        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
+        dentry = lookup_one_len(name, rec_dir.dentry, namlen);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
         if (IS_ERR(dentry)) {
                 status = PTR_ERR(dentry);
                 return status;
@@ -302,7 +302,7 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
         if (!dentry->d_inode)
                 goto out;
 
-        status = nfsd4_clear_clid_dir(rec_dir.path.dentry, dentry);
+        status = nfsd4_clear_clid_dir(rec_dir.dentry, dentry);
 out:
         dput(dentry);
         return status;
@@ -318,7 +318,7 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp)
         if (!rec_dir_init || !clp->cl_firststate)
                 return;
 
-        status = mnt_want_write(rec_dir.path.mnt);
+        status = mnt_want_write(rec_dir.mnt);
         if (status)
                 goto out;
         clp->cl_firststate = 0;
@@ -327,7 +327,7 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp)
         nfs4_reset_user(uid, gid);
         if (status == 0)
                 nfsd4_sync_rec_dir();
-        mnt_drop_write(rec_dir.path.mnt);
+        mnt_drop_write(rec_dir.mnt);
 out:
         if (status)
                 printk("NFSD: Failed to remove expired client state directory"
@@ -357,17 +357,17 @@ nfsd4_recdir_purge_old(void) {
 
         if (!rec_dir_init)
                 return;
-        status = mnt_want_write(rec_dir.path.mnt);
+        status = mnt_want_write(rec_dir.mnt);
         if (status)
                 goto out;
-        status = nfsd4_list_rec_dir(rec_dir.path.dentry, purge_old);
+        status = nfsd4_list_rec_dir(rec_dir.dentry, purge_old);
         if (status == 0)
                 nfsd4_sync_rec_dir();
-        mnt_drop_write(rec_dir.path.mnt);
+        mnt_drop_write(rec_dir.mnt);
 out:
         if (status)
                 printk("nfsd4: failed to purge old clients from recovery"
-                        " directory %s\n", rec_dir.path.dentry->d_name.name);
+                        " directory %s\n", rec_dir.dentry->d_name.name);
 }
 
 static int
@@ -387,10 +387,10 @@ int
 nfsd4_recdir_load(void) {
         int status;
 
-        status = nfsd4_list_rec_dir(rec_dir.path.dentry, load_recdir);
+        status = nfsd4_list_rec_dir(rec_dir.dentry, load_recdir);
         if (status)
                 printk("nfsd4: failed loading clients from recovery"
-                        " directory %s\n", rec_dir.path.dentry->d_name.name);
+                        " directory %s\n", rec_dir.dentry->d_name.name);
         return status;
 }
 
@@ -412,7 +412,7 @@ nfsd4_init_recdir(char *rec_dirname)
 
         nfs4_save_user(&uid, &gid);
 
-        status = path_lookup(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
+        status = kern_path(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
                         &rec_dir);
         if (status)
                 printk("NFSD: unable to find recovery directory %s\n",
@@ -429,5 +429,5 @@ nfsd4_shutdown_recdir(void)
         if (!rec_dir_init)
                 return;
         rec_dir_init = 0;
-        path_put(&rec_dir.path);
+        path_put(&rec_dir);
 }
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 0cc7ff5d5ab5..b0bebc552a11 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3284,17 +3284,17 @@ int
 nfs4_reset_recoverydir(char *recdir)
 {
         int status;
-        struct nameidata nd;
+        struct path path;
 
-        status = path_lookup(recdir, LOOKUP_FOLLOW, &nd);
+        status = kern_path(recdir, LOOKUP_FOLLOW, &path);
         if (status)
                 return status;
         status = -ENOTDIR;
-        if (S_ISDIR(nd.path.dentry->d_inode->i_mode)) {
+        if (S_ISDIR(path.dentry->d_inode->i_mode)) {
                 nfs4_set_recdir(recdir);
                 status = 0;
         }
-        path_put(&nd.path);
+        path_put(&path);
         return status;
 }
 
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 97543df58242..e3f9783fdcf7 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -341,7 +341,7 @@ static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
 
 static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
 {
-        struct nameidata nd;
+        struct path path;
         char *fo_path;
         int error;
 
@@ -356,13 +356,13 @@ static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
         if (qword_get(&buf, fo_path, size) < 0)
                 return -EINVAL;
 
-        error = path_lookup(fo_path, 0, &nd);
+        error = kern_path(fo_path, 0, &path);
         if (error)
                 return error;
 
-        error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb);
+        error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
 
-        path_put(&nd.path);
+        path_put(&path);
         return error;
 }