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@@ -322,43 +322,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
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}
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}
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-/**
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- * reparent_to_kthreadd - Reparent the calling kernel thread to kthreadd
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- *
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- * If a kernel thread is launched as a result of a system call, or if
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- * it ever exits, it should generally reparent itself to kthreadd so it
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- * isn't in the way of other processes and is correctly cleaned up on exit.
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- *
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- * The various task state such as scheduling policy and priority may have
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- * been inherited from a user process, so we reset them to sane values here.
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- *
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- * NOTE that reparent_to_kthreadd() gives the caller full capabilities.
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- */
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-static void reparent_to_kthreadd(void)
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-{
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- write_lock_irq(&tasklist_lock);
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-
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- ptrace_unlink(current);
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- /* Reparent to init */
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- current->real_parent = current->parent = kthreadd_task;
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- list_move_tail(¤t->sibling, ¤t->real_parent->children);
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-
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- /* Set the exit signal to SIGCHLD so we signal init on exit */
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- current->exit_signal = SIGCHLD;
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-
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- if (task_nice(current) < 0)
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- set_user_nice(current, 0);
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- /* cpus_allowed? */
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- /* rt_priority? */
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- /* signals? */
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- memcpy(current->signal->rlim, init_task.signal->rlim,
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- sizeof(current->signal->rlim));
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-
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- atomic_inc(&init_cred.usage);
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- commit_creds(&init_cred);
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- write_unlock_irq(&tasklist_lock);
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-}
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-
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void __set_special_pids(struct pid *pid)
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{
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struct task_struct *curr = current->group_leader;
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@@ -370,13 +333,6 @@ void __set_special_pids(struct pid *pid)
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change_pid(curr, PIDTYPE_PGID, pid);
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}
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-static void set_special_pids(struct pid *pid)
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-{
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- write_lock_irq(&tasklist_lock);
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- __set_special_pids(pid);
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- write_unlock_irq(&tasklist_lock);
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-}
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-
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/*
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* Let kernel threads use this to say that they allow a certain signal.
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* Must not be used if kthread was cloned with CLONE_SIGHAND.
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@@ -416,54 +372,6 @@ int disallow_signal(int sig)
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EXPORT_SYMBOL(disallow_signal);
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-/*
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- * Put all the gunge required to become a kernel thread without
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- * attached user resources in one place where it belongs.
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- */
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-
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-void daemonize(const char *name, ...)
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-{
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- va_list args;
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- sigset_t blocked;
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-
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- va_start(args, name);
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- vsnprintf(current->comm, sizeof(current->comm), name, args);
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- va_end(args);
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-
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- /*
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- * If we were started as result of loading a module, close all of the
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- * user space pages. We don't need them, and if we didn't close them
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- * they would be locked into memory.
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- */
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- exit_mm(current);
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- /*
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- * We don't want to get frozen, in case system-wide hibernation
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- * or suspend transition begins right now.
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- */
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- current->flags |= (PF_NOFREEZE | PF_KTHREAD);
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-
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- if (current->nsproxy != &init_nsproxy) {
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- get_nsproxy(&init_nsproxy);
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- switch_task_namespaces(current, &init_nsproxy);
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- }
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- set_special_pids(&init_struct_pid);
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- proc_clear_tty(current);
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-
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- /* Block and flush all signals */
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- sigfillset(&blocked);
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- sigprocmask(SIG_BLOCK, &blocked, NULL);
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- flush_signals(current);
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-
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- /* Become as one with the init task */
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-
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- daemonize_fs_struct();
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- daemonize_descriptors();
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-
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- reparent_to_kthreadd();
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-}
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-
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-EXPORT_SYMBOL(daemonize);
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-
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#ifdef CONFIG_MM_OWNER
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/*
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* A task is exiting. If it owned this mm, find a new owner for the mm.
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Al Viro