diff options
author | 2017-03-08 23:13:28 -0800 | |
---|---|---|
committer | 2017-03-08 23:36:15 -0800 | |
commit | 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch) | |
tree | d65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/fs/namei.c | |
parent | c189ccac5702322ed843fe17057035b7222a59b6 (diff) |
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e
where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt
c) One patch has been backported thus revert the patch before applying.
filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run
Upstream status: backport
Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/fs/namei.c')
-rw-r--r-- | kernel/fs/namei.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/kernel/fs/namei.c b/kernel/fs/namei.c index d8ee4da93..0b0acba72 100644 --- a/kernel/fs/namei.c +++ b/kernel/fs/namei.c @@ -887,6 +887,7 @@ static inline int may_follow_link(struct nameidata *nd) { const struct inode *inode; const struct inode *parent; + kuid_t puid; if (!sysctl_protected_symlinks) return 0; @@ -902,7 +903,8 @@ static inline int may_follow_link(struct nameidata *nd) return 0; /* Allowed if parent directory and link owner match. */ - if (uid_eq(parent->i_uid, inode->i_uid)) + puid = parent->i_uid; + if (uid_valid(puid) && uid_eq(puid, inode->i_uid)) return 0; if (nd->flags & LOOKUP_RCU) @@ -2906,22 +2908,10 @@ no_open: dentry = lookup_real(dir, dentry, nd->flags); if (IS_ERR(dentry)) return PTR_ERR(dentry); - - if (create_error) { - int open_flag = op->open_flag; - - error = create_error; - if ((open_flag & O_EXCL)) { - if (!dentry->d_inode) - goto out; - } else if (!dentry->d_inode) { - goto out; - } else if ((open_flag & O_TRUNC) && - d_is_reg(dentry)) { - goto out; - } - /* will fail later, go on to get the right error */ - } + } + if (create_error && !dentry->d_inode) { + error = create_error; + goto out; } looked_up: path->dentry = dentry; @@ -4195,7 +4185,11 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, bool new_is_dir = false; unsigned max_links = new_dir->i_sb->s_max_links; - if (source == target) + /* + * Check source == target. + * On overlayfs need to look at underlying inodes. + */ + if (vfs_select_inode(old_dentry, 0) == vfs_select_inode(new_dentry, 0)) return 0; error = may_delete(old_dir, old_dentry, is_dir); |