LU-13004 ptlrpc: Allow BULK_BUF_KIOV to accept a kvec

[fs/lustre-release.git] / lustre / ptlrpc / sec_ctx.c

diff --git a/lustre/ptlrpc/sec_ctx.c b/lustre/ptlrpc/sec_ctx.c
index c04020a..1d22b90 100644 (file)
--- a/lustre/ptlrpc/sec_ctx.c
+++ b/lustre/ptlrpc/sec_ctx.c
@@ -20,26 +20,52 @@
  *
  * GPL HEADER END
  */
+/*
+ * Copyright (c) 2014, 2017, Intel Corporation.
+ */
 
 #define DEBUG_SUBSYSTEM S_FILTER
 
 #include <linux/fs.h>
 #include <libcfs/libcfs.h>
 #include <lvfs.h>
+#include <obd_class.h>
+
+#include "ptlrpc_internal.h"
 
 /* refine later and change to seqlock or simlar from libcfs */
 /* Debugging check only needed during development */
 #ifdef OBD_CTXT_DEBUG
 # define ASSERT_CTXT_MAGIC(magic) LASSERT((magic) == OBD_RUN_CTXT_MAGIC)
-# define ASSERT_NOT_KERNEL_CTXT(msg) LASSERTF(!segment_eq(get_fs(), get_ds()),\
+# define ASSERT_NOT_KERNEL_CTXT(msg) LASSERTF(!segment_eq(get_fs(), KERNEL_DS),\
                                              msg)
-# define ASSERT_KERNEL_CTXT(msg) LASSERTF(segment_eq(get_fs(), get_ds()), msg)
+# define ASSERT_KERNEL_CTXT(msg) LASSERTF(segment_eq(get_fs(), KERNEL_DS), msg)
 #else
 # define ASSERT_CTXT_MAGIC(magic) do {} while(0)
 # define ASSERT_NOT_KERNEL_CTXT(msg) do {} while(0)
 # define ASSERT_KERNEL_CTXT(msg) do {} while(0)
 #endif
 
+static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
+                                struct dentry *dentry)
+{
+       struct path path;
+       struct path old_pwd;
+
+       path.mnt = mnt;
+       path.dentry = dentry;
+       path_get(&path);
+       spin_lock(&fs->lock);
+       write_seqcount_begin(&fs->seq);
+       old_pwd = fs->pwd;
+       fs->pwd = path;
+       write_seqcount_end(&fs->seq);
+       spin_unlock(&fs->lock);
+
+       if (old_pwd.dentry)
+               path_put(&old_pwd);
+}
+
 /* push / pop to root of obd store */
 void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx)
 {
@@ -91,34 +117,3 @@ void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx)
        current->fs->umask = saved->umask;
 }
 EXPORT_SYMBOL(pop_ctxt);
-
-/* utility to rename a file */
-int lustre_rename(struct dentry *dir, struct vfsmount *mnt,
-                 char *oldname, char *newname)
-{
-       struct dentry *dchild_old, *dchild_new;
-       int err = 0;
-       ENTRY;
-
-       ASSERT_KERNEL_CTXT("kernel doing rename outside kernel context\n");
-       CDEBUG(D_INODE, "renaming file %.*s to %.*s\n",
-              (int)strlen(oldname), oldname, (int)strlen(newname), newname);
-
-       dchild_old = ll_lookup_one_len(oldname, dir, strlen(oldname));
-       if (IS_ERR(dchild_old))
-               RETURN(PTR_ERR(dchild_old));
-
-       if (!dchild_old->d_inode)
-               GOTO(put_old, err = -ENOENT);
-
-       dchild_new = ll_lookup_one_len(newname, dir, strlen(newname));
-       if (IS_ERR(dchild_new))
-               GOTO(put_old, err = PTR_ERR(dchild_new));
-
-       err = ll_vfs_rename(dir->d_inode, dchild_old, dir->d_inode, dchild_new);
-
-       dput(dchild_new);
-put_old:
-       dput(dchild_old);
-       RETURN(err);
-}