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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-05-30 09:08:14 (GMT)
committerDavid Woodhouse <dwmw2@infradead.org>2007-06-01 12:20:29 (GMT)
commitea55d30798ac206c9f584ac264b6b8eb093d237a (patch)
tree4de974f44ddcc4d8615b3e761c62924b6b29af9a /fs
parent2ad8ee713566671875216ebcec64f2eda47bd19d (diff)
[JFFS2] Fix buffer length calculations in jffs2_get_inode_nodes()
If we have already read enough bytes, no need to call read_more(). Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/jffs2/readinode.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index 4884d5e..5663e8c 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -1044,7 +1044,8 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
case JFFS2_NODETYPE_DIRENT:
- if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_dirent)) {
+ if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_dirent) &&
+ len < sizeof(struct jffs2_raw_dirent)) {
err = read_more(c, ref, sizeof(struct jffs2_raw_dirent), &len, buf);
if (unlikely(err))
goto free_out;
@@ -1058,7 +1059,8 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
case JFFS2_NODETYPE_INODE:
- if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_inode)) {
+ if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_inode) &&
+ len < sizeof(struct jffs2_raw_inode)) {
err = read_more(c, ref, sizeof(struct jffs2_raw_inode), &len, buf);
if (unlikely(err))
goto free_out;
@@ -1071,7 +1073,8 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
break;
default:
- if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_unknown_node)) {
+ if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_unknown_node) &&
+ len < sizeof(struct jffs2_unknown_node)) {
err = read_more(c, ref, sizeof(struct jffs2_unknown_node), &len, buf);
if (unlikely(err))
goto free_out;

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