[PATCH] sysctl: move SYSV IPC sysctls to their own file

This is just a simple cleanup to keep kernel/sysctl.c from getting to crowded
with special cases, and by keeping all of the ipc logic to together it makes
the code a little more readable.

[gcoady.lk@gmail.com: build fix]
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Grant Coady <gcoady.lk@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 176 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index eff1d36c0687..ca376e733ce4 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -90,12 +90,6 @@ extern char modprobe_path[];
 #ifdef CONFIG_CHR_DEV_SG
 extern int sg_big_buff;
 #endif
-#ifdef CONFIG_SYSVIPC
-static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
-		void __user *buffer, size_t *lenp, loff_t *ppos);
-static int proc_ipc_doulongvec_minmax(ctl_table *table, int write, struct file *filp,
-		void __user *buffer, size_t *lenp, loff_t *ppos);
-#endif
 
 #ifdef __sparc__
 extern char reboot_command [];
@@ -135,11 +129,6 @@ static int parse_table(int __user *, int, void __user *, size_t __user *,
 		void __user *, size_t, ctl_table *);
 #endif
 
-#ifdef CONFIG_SYSVIPC
-static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
-		  void __user *oldval, size_t __user *oldlenp,
-		  void __user *newval, size_t newlen);
-#endif
 
 #ifdef CONFIG_PROC_SYSCTL
 static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
@@ -169,17 +158,6 @@ extern ctl_table inotify_table[];
 int sysctl_legacy_va_layout;
 #endif
 
-#ifdef CONFIG_SYSVIPC
-static void *get_ipc(ctl_table *table, int write)
-{
-	char *which = table->data;
-	struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns;
-	which = (which - (char *)&init_ipc_ns) + (char *)ipc_ns;
-	return which;
-}
-#else
-#define get_ipc(T,W) ((T)->data)
-#endif
 
 /* /proc declarations: */
 
@@ -403,71 +381,6 @@ static ctl_table kern_table[] = {
 		.proc_handler	= &proc_dointvec,
 	},
 #endif
-#ifdef CONFIG_SYSVIPC
-	{
-		.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_dointvec,
-		.strategy	= sysctl_ipc_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,
-	},
-#endif
 #ifdef CONFIG_MAGIC_SYSRQ
 	{
 		.ctl_name	= KERN_SYSRQ,
@@ -2269,27 +2182,6 @@ int proc_dointvec_ms_jiffies(ctl_table *table, int write, struct file *filp,
 				do_proc_dointvec_ms_jiffies_conv, NULL);
 }
 
-#ifdef CONFIG_SYSVIPC
-static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
-	void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	void *which;
-	which = get_ipc(table, write);
-	return __do_proc_dointvec(which, table, write, filp, buffer,
-			lenp, ppos, NULL, NULL);
-}
-
-static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
-	struct file *filp, void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	void *which;
-	which = get_ipc(table, write);
-	return __do_proc_doulongvec_minmax(which, table, write, filp, buffer,
-			lenp, ppos, 1l, 1l);
-}
-
-#endif
-
 static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
 			   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -2320,25 +2212,6 @@ int proc_dostring(ctl_table *table, int write, struct file *filp,
 	return -ENOSYS;
 }
 
-#ifdef CONFIG_SYSVIPC
-static int proc_do_ipc_string(ctl_table *table, int write, struct file *filp,
-		void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	return -ENOSYS;
-}
-static int proc_ipc_dointvec(ctl_table *table, int write, struct file *filp,
-		void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	return -ENOSYS;
-}
-static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
-		struct file *filp, void __user *buffer,
-		size_t *lenp, loff_t *ppos)
-{
-	return -ENOSYS;
-}
-#endif
-
 int proc_dointvec(ctl_table *table, int write, struct file *filp,
 		  void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -2550,47 +2423,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
 
 
 
-#ifdef CONFIG_SYSVIPC
-/* The generic sysctl ipc data routine. */
-static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
-		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, 1);
-	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;
-}
-#endif
-
 #else /* CONFIG_SYSCTL_SYSCALL */
 
 
@@ -2655,14 +2487,6 @@ int sysctl_ms_jiffies(ctl_table *table, int __user *name, int nlen,
 	return -ENOSYS;
 }
 
-#ifdef CONFIG_SYSVIPC
-static int sysctl_ipc_data(ctl_table *table, int __user *name, int nlen,
-		void __user *oldval, size_t __user *oldlenp,
-		void __user *newval, size_t newlen)
-{
-	return -ENOSYS;
-}
-#endif
 #endif /* CONFIG_SYSCTL_SYSCALL */
 
 /*