kill daemonize()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 92 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 346616c0092..f9275e2c7c2 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -322,43 +322,6 @@ kill_orphaned_pgrp(struct task_struct *tsk, struct task_struct *parent)
         }
 }
 
-/**
- * reparent_to_kthreadd - Reparent the calling kernel thread to kthreadd
- *
- * If a kernel thread is launched as a result of a system call, or if
- * it ever exits, it should generally reparent itself to kthreadd so it
- * isn't in the way of other processes and is correctly cleaned up on exit.
- *
- * The various task state such as scheduling policy and priority may have
- * been inherited from a user process, so we reset them to sane values here.
- *
- * NOTE that reparent_to_kthreadd() gives the caller full capabilities.
- */
-static void reparent_to_kthreadd(void)
-{
-        write_lock_irq(&tasklist_lock);
-
-        ptrace_unlink(current);
-        /* Reparent to init */
-        current->real_parent = current->parent = kthreadd_task;
-        list_move_tail(&current->sibling, &current->real_parent->children);
-
-        /* Set the exit signal to SIGCHLD so we signal init on exit */
-        current->exit_signal = SIGCHLD;
-
-        if (task_nice(current) < 0)
-                set_user_nice(current, 0);
-        /* cpus_allowed? */
-        /* rt_priority? */
-        /* signals? */
-        memcpy(current->signal->rlim, init_task.signal->rlim,
-               sizeof(current->signal->rlim));
-
-        atomic_inc(&init_cred.usage);
-        commit_creds(&init_cred);
-        write_unlock_irq(&tasklist_lock);
-}
-
 void __set_special_pids(struct pid *pid)
 {
         struct task_struct *curr = current->group_leader;
@@ -370,13 +333,6 @@ void __set_special_pids(struct pid *pid)
                 change_pid(curr, PIDTYPE_PGID, pid);
 }
 
-static void set_special_pids(struct pid *pid)
-{
-        write_lock_irq(&tasklist_lock);
-        __set_special_pids(pid);
-        write_unlock_irq(&tasklist_lock);
-}
-
 /*
  * Let kernel threads use this to say that they allow a certain signal.
  * Must not be used if kthread was cloned with CLONE_SIGHAND.
@@ -416,54 +372,6 @@ int disallow_signal(int sig)
 
 EXPORT_SYMBOL(disallow_signal);
 
-/*
- *      Put all the gunge required to become a kernel thread without
- *      attached user resources in one place where it belongs.
- */
-
-void daemonize(const char *name, ...)
-{
-        va_list args;
-        sigset_t blocked;
-
-        va_start(args, name);
-        vsnprintf(current->comm, sizeof(current->comm), name, args);
-        va_end(args);
-
-        /*
-         * If we were started as result of loading a module, close all of the
-         * user space pages.  We don't need them, and if we didn't close them
-         * they would be locked into memory.
-         */
-        exit_mm(current);
-        /*
-         * We don't want to get frozen, in case system-wide hibernation
-         * or suspend transition begins right now.
-         */
-        current->flags |= (PF_NOFREEZE | PF_KTHREAD);
-
-        if (current->nsproxy != &init_nsproxy) {
-                get_nsproxy(&init_nsproxy);
-                switch_task_namespaces(current, &init_nsproxy);
-        }
-        set_special_pids(&init_struct_pid);
-        proc_clear_tty(current);
-
-        /* Block and flush all signals */
-        sigfillset(&blocked);
-        sigprocmask(SIG_BLOCK, &blocked, NULL);
-        flush_signals(current);
-
-        /* Become as one with the init task */
-
-        daemonize_fs_struct();
-        daemonize_descriptors();
-
-        reparent_to_kthreadd();
-}
-
-EXPORT_SYMBOL(daemonize);
-
 #ifdef CONFIG_MM_OWNER
 /*
  * A task is exiting.   If it owned this mm, find a new owner for the mm.