aboutsummaryrefslogtreecommitdiff
path: root/ipc/mqueue.c
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2008-11-14 10:39:22 +1100
committerJames Morris <jmorris@namei.org>2008-11-14 10:39:22 +1100
commit745ca2475a6ac596e3d8d37c2759c0fbe2586227 (patch)
treef87c34bdfbc8542477b16a014bbb4e3b415b286a /ipc/mqueue.c
parent88e67f3b8898c5ea81d2916dd5b8bc9c0c35ba13 (diff)
downloadlinux-linaro-stable-745ca2475a6ac596e3d8d37c2759c0fbe2586227.tar.gz
CRED: Pass credentials through dentry_open()
Pass credentials through dentry_open() so that the COW creds patch can have SELinux's flush_unauthorized_files() pass the appropriate creds back to itself when it opens its null chardev. The security_dentry_open() call also now takes a creds pointer, as does the dentry_open hook in struct security_operations. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'ipc/mqueue.c')
-rw-r--r--ipc/mqueue.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 1151881ccb9a..d9393f8e4c3e 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -594,6 +594,7 @@ static int mq_attr_ok(struct mq_attr *attr)
static struct file *do_create(struct dentry *dir, struct dentry *dentry,
int oflag, mode_t mode, struct mq_attr __user *u_attr)
{
+ const struct cred *cred = current_cred();
struct mq_attr attr;
struct file *result;
int ret;
@@ -618,7 +619,7 @@ static struct file *do_create(struct dentry *dir, struct dentry *dentry,
if (ret)
goto out_drop_write;
- result = dentry_open(dentry, mqueue_mnt, oflag);
+ result = dentry_open(dentry, mqueue_mnt, oflag, cred);
/*
* dentry_open() took a persistent mnt_want_write(),
* so we can now drop this one.
@@ -637,8 +638,10 @@ out:
/* Opens existing queue */
static struct file *do_open(struct dentry *dentry, int oflag)
{
-static int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
- MAY_READ | MAY_WRITE };
+ const struct cred *cred = current_cred();
+
+ static const int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
+ MAY_READ | MAY_WRITE };
if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY)) {
dput(dentry);
@@ -652,7 +655,7 @@ static int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
return ERR_PTR(-EACCES);
}
- return dentry_open(dentry, mqueue_mnt, oflag);
+ return dentry_open(dentry, mqueue_mnt, oflag, cred);
}
asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,