static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
struct mq_attr *attr)
{
+ struct user_struct *u = current_user();
struct inode *inode;
inode = new_inode(sb);
if (inode) {
inode->i_mode = mode;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
- inode->i_blocks = 0;
+ inode->i_uid = current_fsuid();
+ inode->i_gid = current_fsgid();
inode->i_mtime = inode->i_ctime = inode->i_atime =
CURRENT_TIME;
if (S_ISREG(mode)) {
struct mqueue_inode_info *info;
struct task_struct *p = current;
- struct user_struct *u = p->user;
unsigned long mq_bytes, mq_msg_tblsz;
inode->i_fop = &mqueue_file_operations;
sig_i.si_code = SI_MESGQ;
sig_i.si_value = info->notify.sigev_value;
sig_i.si_pid = task_tgid_vnr(current);
- sig_i.si_uid = current->uid;
+ sig_i.si_uid = current_uid();
kill_pid_info(info->notify.sigev_signo,
&sig_i, info->notify_owner);
wake_up(&info->wait_q);
}
-static long prepare_timeout(const struct timespec __user *u_arg)
+static long prepare_timeout(struct timespec *p)
{
- struct timespec ts, nowts;
+ struct timespec nowts;
long timeout;
- if (u_arg) {
- if (unlikely(copy_from_user(&ts, u_arg,
- sizeof(struct timespec))))
- return -EFAULT;
-
- if (unlikely(ts.tv_nsec < 0 || ts.tv_sec < 0
- || ts.tv_nsec >= NSEC_PER_SEC))
+ if (p) {
+ if (unlikely(p->tv_nsec < 0 || p->tv_sec < 0
+ || p->tv_nsec >= NSEC_PER_SEC))
return -EINVAL;
nowts = CURRENT_TIME;
/* first subtract as jiffies can't be too big */
- ts.tv_sec -= nowts.tv_sec;
- if (ts.tv_nsec < nowts.tv_nsec) {
- ts.tv_nsec += NSEC_PER_SEC;
- ts.tv_sec--;
+ p->tv_sec -= nowts.tv_sec;
+ if (p->tv_nsec < nowts.tv_nsec) {
+ p->tv_nsec += NSEC_PER_SEC;
+ p->tv_sec--;
}
- ts.tv_nsec -= nowts.tv_nsec;
- if (ts.tv_sec < 0)
+ p->tv_nsec -= nowts.tv_nsec;
+ if (p->tv_sec < 0)
return 0;
- timeout = timespec_to_jiffies(&ts) + 1;
+ timeout = timespec_to_jiffies(p) + 1;
} else
return MAX_SCHEDULE_TIMEOUT;
* Invoked when creating a new queue via sys_mq_open
*/
static struct file *do_create(struct dentry *dir, struct dentry *dentry,
- int oflag, mode_t mode, struct mq_attr __user *u_attr)
+ int oflag, mode_t mode, struct mq_attr *attr)
{
- struct mq_attr attr;
+ const struct cred *cred = current_cred();
struct file *result;
int ret;
- if (u_attr) {
- ret = -EFAULT;
- if (copy_from_user(&attr, u_attr, sizeof(attr)))
- goto out;
+ if (attr) {
ret = -EINVAL;
- if (!mq_attr_ok(&attr))
+ if (!mq_attr_ok(attr))
goto out;
/* store for use during create */
- dentry->d_fsdata = &attr;
+ dentry->d_fsdata = attr;
}
mode &= ~current->fs->umask;
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.
/* 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);
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,
struct dentry *dentry;
struct file *filp;
char *name;
+ struct mq_attr attr;
int fd, error;
- error = audit_mq_open(oflag, mode, u_attr);
- if (error != 0)
- return error;
+ if (u_attr && copy_from_user(&attr, u_attr, sizeof(struct mq_attr)))
+ return -EFAULT;
+
+ audit_mq_open(oflag, mode, u_attr ? &attr : NULL);
if (IS_ERR(name = getname(u_name)))
return PTR_ERR(name);
filp = do_open(dentry, oflag);
} else {
filp = do_create(mqueue_mnt->mnt_root, dentry,
- oflag, mode, u_attr);
+ oflag, mode,
+ u_attr ? &attr : NULL);
}
} else {
error = -ENOENT;
struct ext_wait_queue *receiver;
struct msg_msg *msg_ptr;
struct mqueue_inode_info *info;
+ struct timespec ts, *p = NULL;
long timeout;
int ret;
- ret = audit_mq_timedsend(mqdes, msg_len, msg_prio, u_abs_timeout);
- if (ret != 0)
- return ret;
+ if (u_abs_timeout) {
+ if (copy_from_user(&ts, u_abs_timeout,
+ sizeof(struct timespec)))
+ return -EFAULT;
+ p = &ts;
+ }
if (unlikely(msg_prio >= (unsigned long) MQ_PRIO_MAX))
return -EINVAL;
- timeout = prepare_timeout(u_abs_timeout);
+ audit_mq_sendrecv(mqdes, msg_len, msg_prio, p);
+ timeout = prepare_timeout(p);
ret = -EBADF;
filp = fget(mqdes);
struct inode *inode;
struct mqueue_inode_info *info;
struct ext_wait_queue wait;
+ struct timespec ts, *p = NULL;
- ret = audit_mq_timedreceive(mqdes, msg_len, u_msg_prio, u_abs_timeout);
- if (ret != 0)
- return ret;
+ if (u_abs_timeout) {
+ if (copy_from_user(&ts, u_abs_timeout,
+ sizeof(struct timespec)))
+ return -EFAULT;
+ p = &ts;
+ }
- timeout = prepare_timeout(u_abs_timeout);
+ audit_mq_sendrecv(mqdes, msg_len, 0, p);
+ timeout = prepare_timeout(p);
ret = -EBADF;
filp = fget(mqdes);
struct mqueue_inode_info *info;
struct sk_buff *nc;
- ret = audit_mq_notify(mqdes, u_notification);
- if (ret != 0)
- return ret;
-
- nc = NULL;
- sock = NULL;
- if (u_notification != NULL) {
+ if (u_notification) {
if (copy_from_user(¬ification, u_notification,
sizeof(struct sigevent)))
return -EFAULT;
+ }
+ audit_mq_notify(mqdes, u_notification ? ¬ification : NULL);
+
+ nc = NULL;
+ sock = NULL;
+ if (u_notification != NULL) {
if (unlikely(notification.sigev_notify != SIGEV_NONE &&
notification.sigev_notify != SIGEV_SIGNAL &&
notification.sigev_notify != SIGEV_THREAD))
omqstat = info->attr;
omqstat.mq_flags = filp->f_flags & O_NONBLOCK;
if (u_mqstat) {
- ret = audit_mq_getsetattr(mqdes, &mqstat);
- if (ret != 0) {
- spin_unlock(&info->lock);
- goto out_fput;
- }
+ audit_mq_getsetattr(mqdes, &mqstat);
if (mqstat.mq_flags & O_NONBLOCK)
filp->f_flags |= O_NONBLOCK;
else
git.openpandora.org / pandora-kernel.git / blobdiff