diff options
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/ipc_sysctl.c | 46 | ||||
| -rw-r--r-- | ipc/mqueue.c | 3 | ||||
| -rw-r--r-- | ipc/sem.c | 1 | ||||
| -rw-r--r-- | ipc/shm.c | 27 |
4 files changed, 42 insertions, 35 deletions
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c index 0dfebc5..4a7a12c 100644 --- a/ipc/ipc_sysctl.c +++ b/ipc/ipc_sysctl.c @@ -26,29 +26,6 @@ static void *get_ipc(ctl_table *table) return which; } -/* - * Routine that is called when the file "auto_msgmni" has successfully been - * written. - * Two values are allowed: - * 0: unregister msgmni's callback routine from the ipc namespace notifier - * chain. This means that msgmni won't be recomputed anymore upon memory - * add/remove or ipc namespace creation/removal. - * 1: register back the callback routine. - */ -static void ipc_auto_callback(int val) -{ - if (!val) - unregister_ipcns_notifier(current->nsproxy->ipc_ns); - else { - /* - * Re-enable automatic recomputing only if not already - * enabled. - */ - recompute_msgmni(current->nsproxy->ipc_ns); - cond_register_ipcns_notifier(current->nsproxy->ipc_ns); - } -} - #ifdef CONFIG_PROC_FS static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) @@ -94,6 +71,29 @@ static int proc_ipc_doulongvec_minmax(ctl_table *table, int write, lenp, ppos); } +/* + * Routine that is called when the file "auto_msgmni" has successfully been + * written. + * Two values are allowed: + * 0: unregister msgmni's callback routine from the ipc namespace notifier + * chain. This means that msgmni won't be recomputed anymore upon memory + * add/remove or ipc namespace creation/removal. + * 1: register back the callback routine. + */ +static void ipc_auto_callback(int val) +{ + if (!val) + unregister_ipcns_notifier(current->nsproxy->ipc_ns); + else { + /* + * Re-enable automatic recomputing only if not already + * enabled. + */ + recompute_msgmni(current->nsproxy->ipc_ns); + cond_register_ipcns_notifier(current->nsproxy->ipc_ns); + } +} + static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write, struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos) { diff --git a/ipc/mqueue.c b/ipc/mqueue.c index eddb624..23fdb84 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -505,7 +505,8 @@ static void __do_notify(struct mqueue_inode_info *info) sig_i.si_errno = 0; 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_pid = task_tgid_nr_ns(current, + ns_of_pid(info->notify_owner)); sig_i.si_uid = current_uid(); kill_pid_info(info->notify.sigev_signo, @@ -1216,7 +1216,6 @@ asmlinkage long sys_semtimedop(int semid, struct sembuf __user *tsops, if (timeout && jiffies_left == 0) error = -EAGAIN; list_del(&queue.list); - goto out_unlock_free; out_unlock_free: sem_unlock(sma); @@ -75,7 +75,7 @@ void shm_init_ns(struct ipc_namespace *ns) ns->shm_ctlall = SHMALL; ns->shm_ctlmni = SHMMNI; ns->shm_tot = 0; - ipc_init_ids(&ns->ids[IPC_SHM_IDS]); + ipc_init_ids(&shm_ids(ns)); } /* @@ -644,7 +644,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) if (err) return err; - memset(&shminfo,0,sizeof(shminfo)); + memset(&shminfo, 0, sizeof(shminfo)); shminfo.shmmni = shminfo.shmseg = ns->shm_ctlmni; shminfo.shmmax = ns->shm_ctlmax; shminfo.shmall = ns->shm_ctlall; @@ -669,7 +669,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) if (err) return err; - memset(&shm_info,0,sizeof(shm_info)); + memset(&shm_info, 0, sizeof(shm_info)); down_read(&shm_ids(ns).rw_mutex); shm_info.used_ids = shm_ids(ns).in_use; shm_get_stat (ns, &shm_info.shm_rss, &shm_info.shm_swp); @@ -678,7 +678,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) shm_info.swap_successes = 0; err = ipc_get_maxid(&shm_ids(ns)); up_read(&shm_ids(ns).rw_mutex); - if(copy_to_user (buf, &shm_info, sizeof(shm_info))) { + if (copy_to_user(buf, &shm_info, sizeof(shm_info))) { err = -EFAULT; goto out; } @@ -692,11 +692,6 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) struct shmid64_ds tbuf; int result; - if (!buf) { - err = -EFAULT; - goto out; - } - if (cmd == SHM_STAT) { shp = shm_lock(ns, shmid); if (IS_ERR(shp)) { @@ -712,7 +707,7 @@ asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf) } result = 0; } - err=-EACCES; + err = -EACCES; if (ipcperms (&shp->shm_perm, S_IRUGO)) goto out_unlock; err = security_shm_shmctl(shp, cmd); @@ -995,6 +990,7 @@ asmlinkage long sys_shmdt(char __user *shmaddr) */ vma = find_vma(mm, addr); +#ifdef CONFIG_MMU while (vma) { next = vma->vm_next; @@ -1039,6 +1035,17 @@ asmlinkage long sys_shmdt(char __user *shmaddr) vma = next; } +#else /* CONFIG_MMU */ + /* under NOMMU conditions, the exact address to be destroyed must be + * given */ + retval = -EINVAL; + if (vma->vm_start == addr && vma->vm_ops == &shm_vm_ops) { + do_munmap(mm, vma->vm_start, vma->vm_end - vma->vm_start); + retval = 0; + } + +#endif + up_write(&mm->mmap_sem); return retval; } |