tree d84587462e0378c5aa9c5581d6920d76242b8c65 parent 91aa9fb573fcc50bc74d5ee64c7e9b36131f1804 author Al Viro <[EMAIL PROTECTED]> Fri, 19 Aug 2005 22:42:16 +0100 committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 20 Aug 2005 07:57:19 -0700
[PATCH] jffs2: fix symlink error handling The current calling conventions for ->follow_link() are already fairly complex. What we have is 1) you can return -error; then you must release nameidata yourself and ->put_link() will _not_ be called. 2) you can do nd_set_link(nd, ERR_PTR(-error)) and return 0 3) you can do nd_set_link(nd, path) and return 0 4) you can return 0 (after having moved nameidata yourself) jffs2 follow_link() is broken - it has an exit where it returns -EIO and leaks nameidata. Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> fs/jffs2/symlink.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c --- a/fs/jffs2/symlink.c +++ b/fs/jffs2/symlink.c @@ -30,6 +30,7 @@ struct inode_operations jffs2_symlink_in static int jffs2_follow_link(struct dentry *dentry, struct nameidata *nd) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode); + char *p = (char *)f->dents; /* * We don't acquire the f->sem mutex here since the only data we @@ -45,13 +46,14 @@ static int jffs2_follow_link(struct dent * nd_set_link() call. */ - if (!f->dents) { + if (!p) { printk(KERN_ERR "jffs2_follow_link(): can't find symlink taerget\n"); - return -EIO; + p = ERR_PTR(-EIO); + } else { + D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents)); } - D1(printk(KERN_DEBUG "jffs2_follow_link(): target path is '%s'\n", (char *) f->dents)); - nd_set_link(nd, (char *)f->dents); + nd_set_link(nd, p); /* * We unlock the f->sem mutex but VFS will use the f->dents string. This is safe - 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