[PATCH 2/4] Fix mainline filesystems to handle ATTR_KILL_ bits correctly

From: Jeff Layton
Date: Mon Aug 20 2007 - 16:58:46 EST

This should fix all of the filesystems in the mainline kernels to handle
ATTR_KILL_SUID and ATTR_KILL_SGID correctly. For most of them, this is
just a matter of making sure that they call generic_attrkill early in
the setattr inode op.

Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
arch/powerpc/platforms/cell/spufs/inode.c | 1 +
fs/9p/vfs_inode.c | 1 +
fs/affs/inode.c | 1 +
fs/afs/inode.c | 3 +++
fs/coda/inode.c | 1 +
fs/configfs/inode.c | 4 +++-
fs/ext2/inode.c | 1 +
fs/ext3/inode.c | 5 ++++-
fs/ext4/inode.c | 5 ++++-
fs/fuse/dir.c | 2 ++
fs/gfs2/ops_inode.c | 2 ++
fs/hostfs/hostfs_kern.c | 2 ++
fs/hpfs/inode.c | 1 +
fs/hugetlbfs/inode.c | 5 ++++-
fs/jffs2/fs.c | 1 +
fs/jfs/acl.c | 2 ++
fs/ocfs2/file.c | 2 ++
fs/proc/base.c | 3 +++
fs/proc/generic.c | 3 +++
fs/proc/proc_sysctl.c | 3 +++
fs/ramfs/file-nommu.c | 5 ++++-
fs/reiserfs/inode.c | 6 +++++-
fs/smbfs/inode.c | 2 ++
fs/sysfs/inode.c | 5 ++++-
fs/ufs/truncate.c | 5 ++++-
fs/xfs/linux-2.6/xfs_iops.c | 5 ++++-
mm/shmem.c | 2 ++
27 files changed, 69 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index b3d0dd1..66144a1 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -97,6 +97,7 @@ spufs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;

+ generic_attrkill(inode->i_mode, attr);
if ((attr->ia_valid & ATTR_SIZE) &&
(attr->ia_size != inode->i_size))
return -EINVAL;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index e5c45ee..a90ebf1 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -756,6 +756,7 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
return PTR_ERR(fid);

v9fs_blank_wstat(&wstat);
+ generic_attrkill(dentry->d_inode->i_mode, iattr);
if (iattr->ia_valid & ATTR_MODE)
wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode);

diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 4609a6c..e8dbedf 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -218,6 +218,7 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr)

pr_debug("AFFS: notify_change(%lu,0x%x)\n",inode->i_ino,attr->ia_valid);

+ generic_attrkill(inode->i_mode, attr);
error = inode_change_ok(inode,attr);
if (error)
goto out;
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 84750c8..8c43c93 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -371,6 +371,9 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr)
vnode->fid.vid, vnode->fid.vnode, dentry->d_name.name,
attr->ia_valid);

+ /* FIXME: is this necessary? */
+ generic_attrkill(dentry->d_inode->i_mode, attr);
+
if (!(attr->ia_valid & (ATTR_SIZE | ATTR_MODE | ATTR_UID | ATTR_GID |
ATTR_MTIME))) {
_leave(" = 0 [unsupported]");
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 342f4e0..7dec870 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -239,6 +239,7 @@ int coda_setattr(struct dentry *de, struct iattr *iattr)
memset(&vattr, 0, sizeof(vattr));

inode->i_ctime = CURRENT_TIME_SEC;
+ generic_attrkill(inode->i_mode, iattr);
coda_iattr_to_vattr(iattr, &vattr);
vattr.va_type = C_VNON; /* cannot set type */

diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index dbd257d..d3d6637 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -59,7 +59,7 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)
struct inode * inode = dentry->d_inode;
struct configfs_dirent * sd = dentry->d_fsdata;
struct iattr * sd_iattr;
- unsigned int ia_valid = iattr->ia_valid;
+ unsigned int ia_valid;
int error;

if (!sd)
@@ -67,6 +67,7 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)

sd_iattr = sd->s_iattr;

+ generic_attrkill(inode->i_mode, iattr);
error = inode_change_ok(inode, iattr);
if (error)
return error;
@@ -90,6 +91,7 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr)

/* attributes were changed atleast once in past */

+ ia_valid = iattr->ia_valid;
if (ia_valid & ATTR_UID)
sd_iattr->ia_uid = iattr->ia_uid;
if (ia_valid & ATTR_GID)
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index c1dcb68..353472c 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1405,6 +1405,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
struct inode *inode = dentry->d_inode;
int error;

+ generic_attrkill(inode->i_mode, iattr);
error = inode_change_ok(inode, iattr);
if (error)
return error;
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 2d6324a..cabb57b 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -2989,7 +2989,10 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error, rc = 0;
- const unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
+
+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;

error = inode_change_ok(inode, attr);
if (error)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a49bb00..c39f472 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3047,7 +3047,10 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error, rc = 0;
- const unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
+
+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;

error = inode_change_ok(inode, attr);
if (error)
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index d1acab9..df6a911 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1005,6 +1005,8 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
struct fuse_attr_out outarg;
int err;

+ generic_attrkill(inode->i_mode, attr);
+
if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
err = inode_change_ok(inode, attr);
if (err)
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 5b8b994..f0d8532 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -994,6 +994,8 @@ static int gfs2_setattr(struct dentry *dentry, struct iattr *attr)
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
goto out;

+ generic_attrkill(inode->i_mode, attr);
+
error = inode_change_ok(inode, attr);
if (error)
goto out;
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 4880256..370f71e 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -821,6 +821,8 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr)

int fd = HOSTFS_I(dentry->d_inode)->fd;

+ generic_attrkill(dentry->d_inode->i_mode, attr);
+
err = inode_change_ok(dentry->d_inode, attr);
if (err)
return err;
diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
index 85d3e1d..1387839 100644
--- a/fs/hpfs/inode.c
+++ b/fs/hpfs/inode.c
@@ -265,6 +265,7 @@ int hpfs_notify_change(struct dentry *dentry, struct iattr *attr)
struct inode *inode = dentry->d_inode;
int error=0;
lock_kernel();
+ generic_attrkill(inode->i_mode, attr);
if ( ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) ||
(hpfs_sb(inode->i_sb)->sb_root == inode->i_ino) ) {
error = -EINVAL;
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index b35a298..fde0875 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -452,10 +452,13 @@ static int hugetlbfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error;
- unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;

BUG_ON(!inode);

+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;
+
error = inode_change_ok(inode, attr);
if (error)
goto out;
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 1d3b7a9..597f903 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -37,6 +37,7 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
uint32_t alloclen;
int ret;
D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
+ generic_attrkill(inode->i_mode, iattr);
ret = inode_change_ok(inode, iattr);
if (ret)
return ret;
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index 4d84bdc..1630ba0 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -227,6 +227,8 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
struct inode *inode = dentry->d_inode;
int rc;

+ generic_attrkill(inode->i_mode, iattr);
+
rc = inode_change_ok(inode, iattr);
if (rc)
return rc;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 0d9f96e..d48c83d 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -989,6 +989,8 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
mlog_entry("(0x%p, '%.*s')\n", dentry,
dentry->d_name.len, dentry->d_name.name);

+ generic_attrkill(inode->i_mode, attr);
+
if (attr->ia_valid & ATTR_MODE)
mlog(0, "mode change: %d\n", attr->ia_mode);
if (attr->ia_valid & ATTR_UID)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 614851a..3b0f6c1 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -349,6 +349,9 @@ static int proc_setattr(struct dentry *dentry, struct iattr *attr)
int error;
struct inode *inode = dentry->d_inode;

+ /* FIXME: is this necessary? */
+ generic_attrkill(inode->i_mode, attr);
+
if (attr->ia_valid & ATTR_MODE)
return -EPERM;

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 1bdb624..1e31ae7 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -239,6 +239,9 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
struct proc_dir_entry *de = PDE(inode);
int error;

+ /* FIXME: is this necessary? */
+ generic_attrkill(inode->i_mode, iattr);
+
error = inode_change_ok(inode, iattr);
if (error)
goto out;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 680c429..7b50364 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -425,6 +425,9 @@ static int proc_sys_setattr(struct dentry *dentry, struct iattr *attr)
struct inode *inode = dentry->d_inode;
int error;

+ /* FIXME: is this necessary */
+ generic_attrkill(inode->i_mode, attr);
+
if (attr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))
return -EPERM;

diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 0989bc2..a3ff4b3 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -192,9 +192,12 @@ static int ramfs_nommu_resize(struct inode *inode, loff_t newsize, loff_t size)
static int ramfs_nommu_setattr(struct dentry *dentry, struct iattr *ia)
{
struct inode *inode = dentry->d_inode;
- unsigned int old_ia_valid = ia->ia_valid;
+ unsigned int old_ia_valid;
int ret = 0;

+ generic_attrkill(inode->i_mode, ia);
+ old_ia_valid = ia->ia_valid;
+
/* POSIX UID/GID verification for setting inode attributes */
ret = inode_change_ok(inode, ia);
if (ret)
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 9525f9f..48db0df 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -3062,7 +3062,11 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error;
- unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
+
+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;
+
reiserfs_write_lock(inode->i_sb);
if (attr->ia_valid & ATTR_SIZE) {
/* version 2 items will be caught by the s_maxbytes check
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index ed851e6..98c4158 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -682,6 +682,8 @@ smb_notify_change(struct dentry *dentry, struct iattr *attr)
if (error)
goto out;

+ generic_attrkill(inode->i_mode, attr);
+
if ((error = inode_change_ok(inode, attr)) < 0)
goto out;

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 782c480..e9a6dfb 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -38,7 +38,7 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)
struct inode * inode = dentry->d_inode;
struct sysfs_dirent * sd = dentry->d_fsdata;
struct iattr * sd_iattr;
- unsigned int ia_valid = iattr->ia_valid;
+ unsigned int ia_valid;
int error;

if (!sd)
@@ -46,6 +46,9 @@ int sysfs_setattr(struct dentry * dentry, struct iattr * iattr)

sd_iattr = sd->s_iattr;

+ generic_attrkill(inode->i_mode, iattr);
+ ia_valid = iattr->ia_valid;
+
error = inode_change_ok(inode, iattr);
if (error)
return error;
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 311ded3..28cb078 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -510,9 +510,12 @@ out:
static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
- unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
int error;

+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;
+
error = inode_change_ok(inode, attr);
if (error)
return error;
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index e0e06dd..cfbed9e 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -651,12 +651,15 @@ xfs_vn_setattr(
struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
- unsigned int ia_valid = attr->ia_valid;
+ unsigned int ia_valid;
bhv_vnode_t *vp = vn_from_inode(inode);
bhv_vattr_t vattr = { 0 };
int flags = 0;
int error;

+ generic_attrkill(inode->i_mode, attr);
+ ia_valid = attr->ia_valid;
+
if (ia_valid & ATTR_UID) {
vattr.va_mask |= XFS_AT_UID;
vattr.va_uid = attr->ia_uid;
diff --git a/mm/shmem.c b/mm/shmem.c
index 29f8d07..de54808 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -718,6 +718,8 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr)
struct page *page = NULL;
int error;

+ generic_attrkill(inode->i_mode, attr);
+
if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)) {
if (attr->ia_size < inode->i_size) {
/*
--
1.5.2.2

-
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