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Commit 2bc4657c authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

sysctl ipc: Remove dead binary sysctl support code. 



Now that sys_sysctl is a generic wrapper around /proc/sys  .ctl_name
and .strategy members of sysctl tables are dead code.  Remove them.

Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
parent a153cf9d

ipc/ipc_sysctl.c

+0 −77
Original line number Diff line number Diff line
@@ -129,136 +129,60 @@ static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write, 
#define proc_ipcauto_dointvec_minmax NULL

#endif



#ifdef CONFIG_SYSCTL_SYSCALL

/* The generic sysctl ipc data routine. */

static int sysctl_ipc_data(ctl_table *table,

		void __user *oldval, size_t __user *oldlenp,

		void __user *newval, size_t newlen)

{

	size_t len;

	void *data;



	/* Get out of I don't have a variable */

	if (!table->data || !table->maxlen)

		return -ENOTDIR;



	data = get_ipc(table);

	if (!data)

		return -ENOTDIR;



	if (oldval && oldlenp) {

		if (get_user(len, oldlenp))

			return -EFAULT;

		if (len) {

			if (len > table->maxlen)

				len = table->maxlen;

			if (copy_to_user(oldval, data, len))

				return -EFAULT;

			if (put_user(len, oldlenp))

				return -EFAULT;

		}

	}



	if (newval && newlen) {

		if (newlen > table->maxlen)

			newlen = table->maxlen;



		if (copy_from_user(data, newval, newlen))

			return -EFAULT;

	}

	return 1;

}



static int sysctl_ipc_registered_data(ctl_table *table,

		void __user *oldval, size_t __user *oldlenp,

		void __user *newval, size_t newlen)

{

	int rc;



	rc = sysctl_ipc_data(table, oldval, oldlenp, newval, newlen);



	if (newval && newlen && rc > 0)

		/*

		 * Tunable has successfully been changed from userland

		 */

		unregister_ipcns_notifier(current->nsproxy->ipc_ns);



	return rc;

}

#else

#define sysctl_ipc_data NULL

#define sysctl_ipc_registered_data NULL

#endif



static int zero;

static int one = 1;



static struct ctl_table ipc_kern_table[] = {

	{

		.ctl_name	= KERN_SHMMAX,

		.procname	= "shmmax",

		.data		= &init_ipc_ns.shm_ctlmax,

		.maxlen		= sizeof (init_ipc_ns.shm_ctlmax),

		.mode		= 0644,

		.proc_handler	= proc_ipc_doulongvec_minmax,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= KERN_SHMALL,

		.procname	= "shmall",

		.data		= &init_ipc_ns.shm_ctlall,

		.maxlen		= sizeof (init_ipc_ns.shm_ctlall),

		.mode		= 0644,

		.proc_handler	= proc_ipc_doulongvec_minmax,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= KERN_SHMMNI,

		.procname	= "shmmni",

		.data		= &init_ipc_ns.shm_ctlmni,

		.maxlen		= sizeof (init_ipc_ns.shm_ctlmni),

		.mode		= 0644,

		.proc_handler	= proc_ipc_dointvec,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= KERN_MSGMAX,

		.procname	= "msgmax",

		.data		= &init_ipc_ns.msg_ctlmax,

		.maxlen		= sizeof (init_ipc_ns.msg_ctlmax),

		.mode		= 0644,

		.proc_handler	= proc_ipc_dointvec,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= KERN_MSGMNI,

		.procname	= "msgmni",

		.data		= &init_ipc_ns.msg_ctlmni,

		.maxlen		= sizeof (init_ipc_ns.msg_ctlmni),

		.mode		= 0644,

		.proc_handler	= proc_ipc_callback_dointvec,

		.strategy	= sysctl_ipc_registered_data,

	},

	{

		.ctl_name	= KERN_MSGMNB,

		.procname	=  "msgmnb",

		.data		= &init_ipc_ns.msg_ctlmnb,

		.maxlen		= sizeof (init_ipc_ns.msg_ctlmnb),

		.mode		= 0644,

		.proc_handler	= proc_ipc_dointvec,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= KERN_SEM,

		.procname	= "sem",

		.data		= &init_ipc_ns.sem_ctls,

		.maxlen		= 4*sizeof (int),

		.mode		= 0644,

		.proc_handler	= proc_ipc_dointvec,

		.strategy	= sysctl_ipc_data,

	},

	{

		.ctl_name	= CTL_UNNUMBERED,

		.procname	= "auto_msgmni",

		.data		= &init_ipc_ns.auto_msgmni,

		.maxlen		= sizeof(int),
@@ -272,7 +196,6 @@ static struct ctl_table ipc_kern_table[] = { 


static struct ctl_table ipc_root_table[] = {

	{

		.ctl_name	= CTL_KERN,

		.procname	= "kernel",

		.mode		= 0555,

		.child		= ipc_kern_table,

ipc/mq_sysctl.c

+3 −4
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ static ctl_table mq_sysctls[] = { 
		.extra1		= &msg_maxsize_limit_min,

		.extra2		= &msg_maxsize_limit_max,

	},

	{ .ctl_name = 0 }

	{}

};



static ctl_table mq_sysctl_dir[] = {
@@ -97,17 +97,16 @@ static ctl_table mq_sysctl_dir[] = { 
		.mode		= 0555,

		.child		= mq_sysctls,

	},

	{ .ctl_name = 0 }

	{}

};



static ctl_table mq_sysctl_root[] = {

	{

		.ctl_name	= CTL_FS,

		.procname	= "fs",

		.mode		= 0555,

		.child		= mq_sysctl_dir,

	},

	{ .ctl_name = 0 }

	{}

};



struct ctl_table_header *mq_register_sysctl_table(void)