Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=69ca4378aa376cf2c49657d4f6951da56c27cd3a Commit: 69ca4378aa376cf2c49657d4f6951da56c27cd3a Parent: a8c68f32644fc8942b25af9239967dd01be621fa Author: David Woodhouse <[EMAIL PROTECTED]> AuthorDate: Sat Oct 13 11:33:50 2007 +0100 Committer: David Woodhouse <[EMAIL PROTECTED]> CommitDate: Sat Oct 13 11:33:50 2007 +0100
[JFFS2] Check for creation of dirents with embedded zero bytes in name. I have no idea how this happened, but OLPC trac #4184 suggests that it did. Catch it early. Signed-off-by: David Woodhouse <[EMAIL PROTECTED]> --- fs/jffs2/write.c | 13 ++++++++++++- 1 files changed, 12 insertions(+), 1 deletions(-) diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c index 664c164..2f56954 100644 --- a/fs/jffs2/write.c +++ b/fs/jffs2/write.c @@ -215,6 +215,17 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff BUG(); }); + if (strnlen(name, namelen) != namelen) { + /* This should never happen, but seems to have done on at least one + occasion: https://dev.laptop.org/ticket/4184 */ + printk(KERN_CRIT "Error in jffs2_write_dirent() -- name contains zero bytes!\n"); + printk(KERN_CRIT "Directory inode #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x\n", + je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino), + je32_to_cpu(rd->name_crc)); + WARN_ON(1); + return ERR_PTR(-EIO); + } + vecs[0].iov_base = rd; vecs[0].iov_len = sizeof(*rd); vecs[1].iov_base = (unsigned char *)name; @@ -226,7 +237,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff fd->version = je32_to_cpu(rd->version); fd->ino = je32_to_cpu(rd->ino); - fd->nhash = full_name_hash(name, strlen(name)); + fd->nhash = full_name_hash(name, namelen); fd->type = rd->type; memcpy(fd->name, name, namelen); fd->name[namelen]=0; - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html