iget: stop JFFS2 from using iget() and read_inode()

[safe/jmp/linux-2.6] / fs / jffs2 / readinode.c

diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index b66eb0c..6c1ba35 100644 (file)
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -65,7 +65,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
                err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
                if (!err && retlen < tn->csize) {
                        JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
-                       c->mtd->unpoint(c->mtd, buffer, ofs, len);
+                       c->mtd->unpoint(c->mtd, buffer, ofs, retlen);
                } else if (err)
                        JFFS2_WARNING("MTD point failed: error code %d.\n", err);
                else
@@ -104,7 +104,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 
        if (crc != tn->data_crc) {
                JFFS2_NOTICE("wrong data CRC in data node at 0x%08x: read %#08x, calculated %#08x.\n",
-                       ofs, tn->data_crc, crc);
+                            ref_offset(ref), tn->data_crc, crc);
                return 1;
        }
 
@@ -210,9 +210,8 @@ static void jffs2_kill_tn(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *
  * offset, and the one with the smallest length will come first in the
  * ordering.
  *
- * Returns 0 if the node was inserted
- *         1 if the node is obsolete (because we can't mark it so yet)
- *         < 0 an if error occurred
+ * Returns 0 if the node was handled (including marking it obsolete)
+ *      < 0 an if error occurred
  */
 static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c,
                                struct jffs2_readinode_info *rii,
@@ -572,8 +571,7 @@ static struct jffs2_raw_node_ref *jffs2_first_valid_node(struct jffs2_raw_node_r
  * Helper function for jffs2_get_inode_nodes().
  * It is called every time an directory entry node is found.
  *
- * Returns: 0 on succes;
- *         1 if the node should be marked obsolete;
+ * Returns: 0 on success;
  *         negative error code on failure.
  */
 static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
@@ -680,8 +678,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
  * Helper function for jffs2_get_inode_nodes().
  * It is called every time an inode node is found.
  *
- * Returns: 0 on success;
- *         1 if the node should be marked obsolete;
+ * Returns: 0 on success (possibly after marking a bad node obsolete);
  *         negative error code on failure.
  */
 static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
@@ -690,7 +687,7 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 {
        struct jffs2_tmp_dnode_info *tn;
        uint32_t len, csize;
-       int ret = 1;
+       int ret = 0;
        uint32_t crc;
 
        /* Obsoleted. This cannot happen, surely? dwmw2 20020308 */
@@ -719,8 +716,9 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                /* Sanity checks */
                if (unlikely(je32_to_cpu(rd->offset) > je32_to_cpu(rd->isize)) ||
                    unlikely(PAD(je32_to_cpu(rd->csize) + sizeof(*rd)) != PAD(je32_to_cpu(rd->totlen)))) {
-                               JFFS2_WARNING("inode node header CRC is corrupted at %#08x\n", ref_offset(ref));
-                               jffs2_dbg_dump_node(c, ref_offset(ref));
+                       JFFS2_WARNING("inode node header CRC is corrupted at %#08x\n", ref_offset(ref));
+                       jffs2_dbg_dump_node(c, ref_offset(ref));
+                       jffs2_mark_node_obsolete(c, ref);
                        goto free_out;
                }
 
@@ -743,7 +741,7 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                         * are not obsolete.
                         *
                         * Of course, this optimization only makes sense in case
-                        * of NAND flashes (or other flashes whith
+                        * of NAND flashes (or other flashes with
                         * !jffs2_can_mark_obsolete()), since on NOR flashes
                         * nodes are marked obsolete physically.
                         *
@@ -775,6 +773,7 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                        if (len >= csize && unlikely(tn->partial_crc != je32_to_cpu(rd->data_crc))) {
                                JFFS2_NOTICE("wrong data CRC in data node at 0x%08x: read %#08x, calculated %#08x.\n",
                                        ref_offset(ref), tn->partial_crc, je32_to_cpu(rd->data_crc));
+                               jffs2_mark_node_obsolete(c, ref);
                                goto free_out;
                        }
 
@@ -854,7 +853,6 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
  * It is called every time an unknown node is found.
  *
  * Returns: 0 on success;
- *         1 if the node should be marked obsolete;
  *         negative error code on failure.
  */
 static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref, struct jffs2_unknown_node *un)
@@ -864,8 +862,8 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re
                JFFS2_ERROR("REF_UNCHECKED but unknown node at %#08x\n",
                            ref_offset(ref));
                JFFS2_ERROR("Node is {%04x,%04x,%08x,%08x}. Please report this error.\n",
-                            je16_to_cpu(un->magic), je16_to_cpu(un->nodetype),
-                            je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc));
+                           je16_to_cpu(un->magic), je16_to_cpu(un->nodetype),
+                           je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc));
                jffs2_mark_node_obsolete(c, ref);
                return 0;
        }
@@ -1088,10 +1086,7 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
                        }
 
                        err = read_unknown(c, ref, &node->u);
-                       if (err == 1) {
-                               jffs2_mark_node_obsolete(c, ref);
-                               break;
-                       } else if (unlikely(err))
+                       if (unlikely(err))
                                goto free_out;
 
                }