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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-05-30 12:08:14 +0300 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-06-01 13:20:29 +0100 |
| commit | ea55d30798ac206c9f584ac264b6b8eb093d237a (patch) | |
| tree | 4de974f44ddcc4d8615b3e761c62924b6b29af9a | |
| parent | 2ad8ee713566671875216ebcec64f2eda47bd19d (diff) | |
| download | op-kernel-dev-ea55d30798ac206c9f584ac264b6b8eb093d237a.zip op-kernel-dev-ea55d30798ac206c9f584ac264b6b8eb093d237a.tar.gz | |
[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>
| -rw-r--r-- | fs/jffs2/readinode.c | 9 |
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; |
