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Subject[PATCH 40/52] CRED: Give the lookup() inode op a credentials pointer
Date
Give the lookup() inode op a credentials pointer.

Signed-off-by: David Howells <dhowells@redhat.com>
---

fs/afs/dir.c | 4 ++--
fs/afs/mntpt.c | 6 ++++--
fs/autofs4/root.c | 6 ++++--
fs/bad_inode.c | 3 ++-
fs/ext3/namei.c | 4 ++--
fs/libfs.c | 3 ++-
fs/namei.c | 6 ++++--
fs/nfs/dir.c | 18 +++++++++++-------
fs/proc/base.c | 23 +++++++++++++++++------
fs/proc/generic.c | 3 ++-
fs/proc/proc_net.c | 4 ++--
fs/proc/proc_sysctl.c | 2 +-
fs/proc/root.c | 6 +++---
fs/sysfs/dir.c | 2 +-
fs/vfat/namei.c | 2 +-
include/linux/fs.h | 6 ++++--
include/linux/proc_fs.h | 3 ++-
17 files changed, 64 insertions(+), 37 deletions(-)

diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 745c8cb..b7bd368 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -20,7 +20,7 @@
#include "internal.h"

static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd);
+ struct nameidata *nd, struct cred *cred);
static int afs_dir_open(struct inode *inode, struct file *file);
static int afs_readdir(struct file *file, void *dirent, filldir_t filldir);
static int afs_d_revalidate(struct dentry *dentry, struct nameidata *nd);
@@ -488,7 +488,7 @@ static int afs_do_lookup(struct inode *dir, struct dentry *dentry,
* look up an entry in a directory
*/
static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
struct afs_vnode *vnode;
struct afs_fid fid;
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 6f8c96f..21a04c0 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -23,7 +23,8 @@

static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
- struct nameidata *nd);
+ struct nameidata *nd,
+ struct cred *cred);
static int afs_mntpt_open(struct inode *inode, struct file *file);
static void *afs_mntpt_follow_link(struct dentry *dentry, struct nameidata *nd);
static void afs_mntpt_expiry_timed_out(struct work_struct *work);
@@ -103,7 +104,8 @@ out:
*/
static struct dentry *afs_mntpt_lookup(struct inode *dir,
struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd,
+ struct cred *cred)
{
_enter("%p,%p{%p{%s},%s}",
dir,
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 50c0ec7..bef0396 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -29,7 +29,8 @@ static int autofs4_dir_open(struct inode *inode, struct file *file);
static int autofs4_dir_close(struct inode *inode, struct file *file);
static int autofs4_dir_readdir(struct file * filp, void * dirent, filldir_t filldir);
static int autofs4_root_readdir(struct file * filp, void * dirent, filldir_t filldir);
-static struct dentry *autofs4_lookup(struct inode *,struct dentry *, struct nameidata *);
+static struct dentry *autofs4_lookup(struct inode *,struct dentry *,
+ struct nameidata *, struct cred *);
static void *autofs4_follow_link(struct dentry *, struct nameidata *);

const struct file_operations autofs4_root_operations = {
@@ -566,7 +567,8 @@ next:
}

/* Lookups in the root directory */
-static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd, struct cred *cred)
{
struct autofs_sb_info *sbi;
struct dentry *unhashed;
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 2e25bfe..e77a80d 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -192,7 +192,8 @@ static int bad_inode_create (struct inode *dir, struct dentry *dentry,
}

static struct dentry *bad_inode_lookup(struct inode *dir,
- struct dentry *dentry, struct nameidata *nd)
+ struct dentry *dentry, struct nameidata *nd,
+ struct cred *cred)
{
return ERR_PTR(-EIO);
}
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index aa741bb..3b17b59 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1044,9 +1044,9 @@ errout:
}
#endif

-static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
+static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry,
+ struct nameidata *nd, struct cred *cred)
{
- struct cred *cred = current->cred;
struct inode * inode;
struct ext3_dir_entry_2 * de;
struct buffer_head * bh;
diff --git a/fs/libfs.c b/fs/libfs.c
index 6b41090..107412e 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -41,7 +41,8 @@ static int simple_delete_dentry(struct dentry *dentry)
* Lookup the data. This is trivial - if the dentry didn't already
* exist, we know it is negative. Set d_op to delete negative dentries.
*/
-struct dentry *simple_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+struct dentry *simple_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd, struct cred *cred)
{
static struct dentry_operations simple_dentry_operations = {
.d_delete = simple_delete_dentry,
diff --git a/fs/namei.c b/fs/namei.c
index 9439e6e..cac57e2 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -469,6 +469,7 @@ ok:
*/
static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, struct nameidata *nd)
{
+ struct cred *cred = current->cred;
struct dentry * result;
struct inode *dir = parent->d_inode;

@@ -492,7 +493,7 @@ static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, s
struct dentry * dentry = d_alloc(parent, name);
result = ERR_PTR(-ENOMEM);
if (dentry) {
- result = dir->i_op->lookup(dir, dentry, nd);
+ result = dir->i_op->lookup(dir, dentry, nd, cred);
if (result)
dput(dentry);
else
@@ -1275,6 +1276,7 @@ int __user_path_lookup_open(const char __user *name, unsigned int lookup_flags,

static inline struct dentry *__lookup_hash_kern(struct qstr *name, struct dentry *base, struct nameidata *nd)
{
+ struct cred *cred = current->cred;
struct dentry *dentry;
struct inode *inode;
int err;
@@ -1298,7 +1300,7 @@ static inline struct dentry *__lookup_hash_kern(struct qstr *name, struct dentry
dentry = ERR_PTR(-ENOMEM);
if (!new)
goto out;
- dentry = inode->i_op->lookup(inode, new, nd);
+ dentry = inode->i_op->lookup(inode, new, nd, cred);
if (!dentry)
dentry = new;
else
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 0dda7bb..11dae6d 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -43,7 +43,8 @@

static int nfs_opendir(struct inode *, struct file *);
static int nfs_readdir(struct file *, void *, filldir_t);
-static struct dentry *nfs_lookup(struct inode *, struct dentry *, struct nameidata *);
+static struct dentry *nfs_lookup(struct inode *, struct dentry *,
+ struct nameidata *, struct cred *);
static int nfs_create(struct inode *, struct dentry *, int, struct nameidata *,
struct cred *);
static int nfs_mkdir(struct inode *, struct dentry *, int, struct cred *);
@@ -107,7 +108,8 @@ const struct inode_operations nfs3_dir_inode_operations = {

#ifdef CONFIG_NFS_V4

-static struct dentry *nfs_atomic_lookup(struct inode *, struct dentry *, struct nameidata *);
+static struct dentry *nfs_atomic_lookup(struct inode *, struct dentry *,
+ struct nameidata *, struct cred *);
const struct inode_operations nfs4_dir_inode_operations = {
.create = nfs_create,
.lookup = nfs_atomic_lookup,
@@ -919,9 +921,9 @@ static inline int nfs_reval_fsid(struct inode *dir, const struct nfs_fattr *fatt
return 0;
}

-static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
+static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry,
+ struct nameidata *nd, struct cred *acred)
{
- struct cred *acred = current->cred;
struct dentry *res;
struct inode *inode = NULL;
int error;
@@ -1016,9 +1018,11 @@ static int is_atomic_open(struct inode *dir, struct nameidata *nd)
return 1;
}

-static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
+static struct dentry *nfs_atomic_lookup(struct inode *dir,
+ struct dentry *dentry,
+ struct nameidata *nd,
+ struct cred *acred)
{
- struct cred *acred = current->cred;
struct dentry *res = NULL;
int error;

@@ -1083,7 +1087,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
out:
return res;
no_open:
- return nfs_lookup(dir, dentry, nd);
+ return nfs_lookup(dir, dentry, nd, acred);
}

static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c7f9940..26f27e5 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1445,7 +1445,7 @@ out_no_task:
}

static struct dentry *proc_lookupfd(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
return proc_lookupfd_common(dir, dentry, proc_fd_instantiate);
}
@@ -1528,7 +1528,8 @@ static struct dentry *proc_fdinfo_instantiate(struct inode *dir,

static struct dentry *proc_lookupfdinfo(struct inode *dir,
struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd,
+ struct cred *cred)
{
return proc_lookupfd_common(dir, dentry, proc_fdinfo_instantiate);
}
@@ -1773,7 +1774,8 @@ static const struct file_operations proc_attr_dir_operations = {
};

static struct dentry *proc_attr_dir_lookup(struct inode *dir,
- struct dentry *dentry, struct nameidata *nd)
+ struct dentry *dentry, struct nameidata *nd,
+ struct cred *cred)
{
return proc_pident_lookup(dir, dentry,
attr_dir_stuff, ARRAY_SIZE(attr_dir_stuff));
@@ -2112,7 +2114,11 @@ static const struct file_operations proc_tgid_base_operations = {
.readdir = proc_tgid_base_readdir,
};

-static struct dentry *proc_tgid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
+static struct dentry *proc_tgid_base_lookup(struct inode *dir,
+ struct dentry *dentry,
+ struct nameidata *nd,
+ struct cred *cred)
+{
return proc_pident_lookup(dir, dentry,
tgid_base_stuff, ARRAY_SIZE(tgid_base_stuff));
}
@@ -2387,7 +2393,11 @@ static int proc_tid_base_readdir(struct file * filp,
tid_base_stuff,ARRAY_SIZE(tid_base_stuff));
}

-static struct dentry *proc_tid_base_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd){
+static struct dentry *proc_tid_base_lookup(struct inode *dir,
+ struct dentry *dentry,
+ struct nameidata *nd,
+ struct cred *cred)
+{
return proc_pident_lookup(dir, dentry,
tid_base_stuff, ARRAY_SIZE(tid_base_stuff));
}
@@ -2431,7 +2441,8 @@ out:
return error;
}

-static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
+static struct dentry *proc_task_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd, struct cred *cred)
{
struct dentry *result = ERR_PTR(-ENOENT);
struct task_struct *task;
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 00a2192..ef5fb3a 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -384,7 +384,8 @@ static struct dentry_operations proc_dentry_operations =
* Don't create negative dentries here, return -ENOENT by hand
* instead.
*/
-struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
+struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry,
+ struct nameidata *nd, struct cred *cred)
{
struct inode *inode = NULL;
struct proc_dir_entry * de;
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 3011c08..a1a2fa9 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -101,7 +101,7 @@ static void *proc_net_follow_link(struct dentry *parent, struct nameidata *nd)
}

static struct dentry *proc_net_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
struct net *net = current->nsproxy->net_ns;
struct dentry *shadow;
@@ -113,7 +113,7 @@ static struct dentry *proc_net_lookup(struct inode *dir, struct dentry *dentry,
dput(nd->dentry);
nd->dentry = shadow;

- return shadow->d_inode->i_op->lookup(shadow->d_inode, dentry, nd);
+ return shadow->d_inode->i_op->lookup(shadow->d_inode, dentry, nd, cred);
}

static int proc_net_setattr(struct dentry *dentry, struct iattr *iattr,
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 4db895c..b1507e0 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -139,7 +139,7 @@ static struct ctl_table *do_proc_sys_lookup(struct dentry *parent,
}

static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
struct ctl_table_header *head;
struct inode *inode;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 03bfde1..1693a60 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -91,11 +91,11 @@ static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
return 0;
}

-static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry,
+ struct nameidata *nd, struct cred *cred)
{
- if (!proc_lookup(dir, dentry, nd)) {
+ if (!proc_lookup(dir, dentry, nd, cred))
return NULL;
- }

return proc_pid_lookup(dir, dentry, nd);
}
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 83e76b3..6a4bfb0 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -760,7 +760,7 @@ static int sysfs_count_nlink(struct sysfs_dirent *sd)
}

static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
struct dentry *ret = NULL;
struct sysfs_dirent * parent_sd = dentry->d_parent->d_fsdata;
diff --git a/fs/vfat/namei.c b/fs/vfat/namei.c
index 78a6854..2fb53fa 100644
--- a/fs/vfat/namei.c
+++ b/fs/vfat/namei.c
@@ -684,7 +684,7 @@ static int vfat_find(struct inode *dir, struct qstr *qname,
}

static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ struct nameidata *nd, struct cred *cred)
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 88f9e49..8d64b1e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1137,7 +1137,8 @@ struct file_operations {
struct inode_operations {
int (*create) (struct inode *,struct dentry *,int, struct nameidata *,
struct cred *);
- struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *);
+ struct dentry * (*lookup) (struct inode *,struct dentry *,
+ struct nameidata *, struct cred *);
int (*link) (struct dentry *,struct inode *,struct dentry *,
struct cred *);
int (*unlink) (struct inode *,struct dentry *, struct cred *);
@@ -1814,7 +1815,8 @@ extern int simple_prepare_write(struct file *file, struct page *page,
extern int simple_commit_write(struct file *file, struct page *page,
unsigned offset, unsigned to);

-extern struct dentry *simple_lookup(struct inode *, struct dentry *, struct nameidata *);
+extern struct dentry *simple_lookup(struct inode *, struct dentry *,
+ struct nameidata *, struct cred *);
extern ssize_t generic_read_dir(struct file *, char __user *, size_t, loff_t *);
extern const struct file_operations simple_dir_operations;
extern const struct inode_operations simple_dir_inode_operations;
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index a297a65..906c416 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -136,7 +136,8 @@ extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct p
* of the /proc/<pid> subdirectories.
*/
extern int proc_readdir(struct file *, void *, filldir_t);
-extern struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
+extern struct dentry *proc_lookup(struct inode *, struct dentry *,
+ struct nameidata *, struct cred *);

extern const struct file_operations proc_kcore_operations;
extern const struct file_operations proc_kmsg_operations;
-
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