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Date: Fri, 26 Oct 2012 11:43:42 -0400
From: Jeff Layton <jlayton@...hat.com>
To: viro@...IV.linux.org.uk
Cc: hch@...radead.org, eparis@...hat.com, linux-audit@...hat.com,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] audit: break up __audit_inode into two functions
One to handle the case where we have a ginfo and a parent flag. Another to
handle the trivial case where we have no ginfo and no parent flag.
Reported-by: Christoph Hellwig <hch@...radead.org>
Signed-off-by: Jeff Layton <jlayton@...hat.com>
---
fs/open.c | 4 ++--
fs/xattr.c | 8 ++++----
include/linux/audit.h | 11 ++++++++++-
ipc/mqueue.c | 4 ++--
kernel/auditsc.c | 17 +++++++++++++++++
5 files changed, 35 insertions(+), 9 deletions(-)
diff --git a/fs/open.c b/fs/open.c
index 59071f5..94d5649 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -478,7 +478,7 @@ SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode)
file = fget(fd);
if (file) {
- audit_inode(NULL, file->f_path.dentry, 0);
+ audit_anonymous(file->f_path.dentry);
err = chmod_common(&file->f_path, mode);
fput(file);
}
@@ -588,7 +588,7 @@ SYSCALL_DEFINE3(fchown, unsigned int, fd, uid_t, user, gid_t, group)
error = mnt_want_write_file(f.file);
if (error)
goto out_fput;
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_anonymous(f.file->f_path.dentry);
error = chown_common(&f.file->f_path, user, group);
mnt_drop_write_file(f.file);
out_fput:
diff --git a/fs/xattr.c b/fs/xattr.c
index e21c119..f3a2ffa 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -412,7 +412,7 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name,
if (!f.file)
return error;
dentry = f.file->f_path.dentry;
- audit_inode(NULL, dentry, 0);
+ audit_anonymous(dentry);
error = mnt_want_write_file(f.file);
if (!error) {
error = setxattr(dentry, name, value, size, flags);
@@ -507,7 +507,7 @@ SYSCALL_DEFINE4(fgetxattr, int, fd, const char __user *, name,
if (!f.file)
return error;
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_anonymous(f.file->f_path.dentry);
error = getxattr(f.file->f_path.dentry, name, value, size);
fdput(f);
return error;
@@ -586,7 +586,7 @@ SYSCALL_DEFINE3(flistxattr, int, fd, char __user *, list, size_t, size)
if (!f.file)
return error;
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_anonymous(f.file->f_path.dentry);
error = listxattr(f.file->f_path.dentry, list, size);
fdput(f);
return error;
@@ -655,7 +655,7 @@ SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name)
if (!f.file)
return error;
dentry = f.file->f_path.dentry;
- audit_inode(NULL, dentry, 0);
+ audit_anonymous(dentry);
error = mnt_want_write_file(f.file);
if (!error) {
error = removexattr(dentry, name);
diff --git a/include/linux/audit.h b/include/linux/audit.h
index bce729a..2214478 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -97,6 +97,7 @@ extern void __audit_syscall_exit(int ret_success, long ret_value);
extern struct filename *__audit_reusename(const __user char *uptr);
extern void __audit_getname(struct filename *name);
extern void audit_putname(struct filename *name);
+extern void __audit_anonymous(const struct dentry *dentry);
extern void __audit_inode(struct filename *name, const struct dentry *dentry,
unsigned int parent);
extern void __audit_inode_child(const struct inode *parent,
@@ -142,6 +143,10 @@ static inline void audit_getname(struct filename *name)
if (unlikely(!audit_dummy_context()))
__audit_getname(name);
}
+static inline void audit_anonymous(const struct dentry *dentry) {
+ if (unlikely(!audit_dummy_context()))
+ __audit_anonymous(dentry);
+}
static inline void audit_inode(struct filename *name, const struct dentry *dentry,
unsigned int parent) {
if (unlikely(!audit_dummy_context()))
@@ -303,7 +308,9 @@ static inline void audit_getname(struct filename *name)
{ }
static inline void audit_putname(struct filename *name)
{ }
-static inline void __audit_inode(struct filename *name,
+static inline void __audit_anonymous(const struct dentry *dentry)
+{ }
+static inline void __audit_inode(struct getname_info *ginfo,
const struct dentry *dentry,
unsigned int parent)
{ }
@@ -311,6 +318,8 @@ static inline void __audit_inode_child(const struct inode *parent,
const struct dentry *dentry,
const unsigned char type)
{ }
+static inline void audit_anonymous(const struct dentry *dentry)
+{ }
static inline void audit_inode(struct filename *name,
const struct dentry *dentry,
unsigned int parent)
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 71a3ca1..2967a09 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -979,7 +979,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
goto out_fput;
}
info = MQUEUE_I(inode);
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_anonymous(f.file->f_path.dentry);
if (unlikely(!(f.file->f_mode & FMODE_WRITE))) {
ret = -EBADF;
@@ -1095,7 +1095,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
goto out_fput;
}
info = MQUEUE_I(inode);
- audit_inode(NULL, f.file->f_path.dentry, 0);
+ audit_anonymous(f.file->f_path.dentry);
if (unlikely(!(f.file->f_mode & FMODE_READ))) {
ret = -EBADF;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 9a65af0..e5495f2 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2175,6 +2175,23 @@ static void audit_names_setup(struct audit_names *n,
audit_copy_fcaps(n, dentry);
}
+/*
+ * __audit_anonymous - store a new audit_names record for an
+ * dentry with no pathname
+ * @dentry: dentry being audited
+ */
+void __audit_anonymous(const struct dentry *dentry)
+{
+ struct audit_context *context = current->audit_context;
+ struct audit_names *n;
+
+ n = audit_alloc_name(context, AUDIT_TYPE_NORMAL);
+ if (!n)
+ return;
+
+ audit_names_setup(n, dentry, 0);
+}
+
/**
* __audit_inode - store the inode and device from a lookup
* @name: name being audited
--
1.7.11.7
--
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