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Commit 0399cb08 authored by Robert Love's avatar Robert Love Committed by Linus Torvalds
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[PATCH] inotify: move sysctl 



This moves the inotify sysctl knobs to "/proc/sys/fs/inotify" from
"/proc/sys/fs".  Also some related cleanup.

Signed-off-by: default avatarRobert Love <rml@novell.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 153f8057

fs/inotify.c

+45 −4
Original line number Diff line number Diff line
@@ -45,8 +45,8 @@ static kmem_cache_t *event_cachep; 


static struct vfsmount *inotify_mnt;



/* These are configurable via /proc/sys/inotify */

int inotify_max_user_devices;

/* these are configurable via /proc/sys/fs/inotify/ */

int inotify_max_user_instances;

int inotify_max_user_watches;

int inotify_max_queued_events;
@@ -125,6 +125,47 @@ struct inotify_watch { 
	u32			mask;	/* event mask for this watch */

};



#ifdef CONFIG_SYSCTL



#include <linux/sysctl.h>



static int zero;



ctl_table inotify_table[] = {

	{

		.ctl_name	= INOTIFY_MAX_USER_INSTANCES,

		.procname	= "max_user_instances",

		.data		= &inotify_max_user_instances,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec,

		.extra1		= &zero,

	},

	{

		.ctl_name	= INOTIFY_MAX_USER_WATCHES,

		.procname	= "max_user_watches",

		.data		= &inotify_max_user_watches,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec,

		.extra1		= &zero, 

	},

	{

		.ctl_name	= INOTIFY_MAX_QUEUED_EVENTS,

		.procname	= "max_queued_events",

		.data		= &inotify_max_queued_events,

		.maxlen		= sizeof(int),

		.mode		= 0644, 

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec, 

		.extra1		= &zero

	},

	{ .ctl_name = 0 }

};

#endif /* CONFIG_SYSCTL */



static inline void get_inotify_dev(struct inotify_device *dev)

{

	atomic_inc(&dev->count);
@@ -842,7 +883,7 @@ asmlinkage long sys_inotify_init(void) 


	user = get_uid(current->user);



	if (unlikely(atomic_read(&user->inotify_devs) >= inotify_max_user_devices)) {

	if (unlikely(atomic_read(&user->inotify_devs) >= inotify_max_user_instances)) {

		ret = -EMFILE;

		goto out_err;

	}
@@ -979,7 +1020,7 @@ static int __init inotify_init(void) 
	inotify_mnt = kern_mount(&inotify_fs_type);



	inotify_max_queued_events = 8192;

	inotify_max_user_devices = 128;

	inotify_max_user_instances = 8;

	inotify_max_user_watches = 8192;



	atomic_set(&inotify_cookie, 0);

include/linux/sysctl.h

+6 −6
Original line number Diff line number Diff line
@@ -61,8 +61,7 @@ enum 
	CTL_DEV=7,		/* Devices */

	CTL_BUS=8,		/* Busses */

	CTL_ABI=9,		/* Binary emulation */

	CTL_CPU=10,		/* CPU stuff (speed scaling, etc) */

	CTL_INOTIFY=11		/* Inotify */

	CTL_CPU=10		/* CPU stuff (speed scaling, etc) */

};



/* CTL_BUS names: */
@@ -71,12 +70,12 @@ enum 
	CTL_BUS_ISA=1		/* ISA */

};



/* CTL_INOTIFY names: */

/* /proc/sys/fs/inotify/ */

enum

{

	INOTIFY_MAX_USER_DEVICES=1,	/* max number of inotify device instances per user */

	INOTIFY_MAX_USER_WATCHES=2,	/* max number of inotify watches per user */

	INOTIFY_MAX_QUEUED_EVENTS=3	/* Max number of queued events per inotify device instance */

	INOTIFY_MAX_USER_INSTANCES=1,	/* max instances per user */

	INOTIFY_MAX_USER_WATCHES=2,	/* max watches per user */

	INOTIFY_MAX_QUEUED_EVENTS=3	/* max queued events per instance */

};



/* CTL_KERN names: */
@@ -685,6 +684,7 @@ enum 
	FS_XFS=17,	/* struct: control xfs parameters */

	FS_AIO_NR=18,	/* current system-wide number of aio requests */

	FS_AIO_MAX_NR=19,	/* system-wide maximum number of aio requests */

	FS_INOTIFY=20,	/* inotify submenu */

};



/* /proc/sys/fs/quota/ */

kernel/sysctl.c

+11 −40
Original line number Diff line number Diff line
@@ -67,12 +67,6 @@ extern int printk_ratelimit_jiffies; 
extern int printk_ratelimit_burst;

extern int pid_max_min, pid_max_max;



#ifdef CONFIG_INOTIFY

extern int inotify_max_user_devices;

extern int inotify_max_user_watches;

extern int inotify_max_queued_events;

#endif



#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)

int unknown_nmi_panic;

extern int proc_unknown_nmi_panic(ctl_table *, int, struct file *,
@@ -152,6 +146,9 @@ extern ctl_table random_table[]; 
#ifdef CONFIG_UNIX98_PTYS

extern ctl_table pty_table[];

#endif

#ifdef CONFIG_INOTIFY

extern ctl_table inotify_table[];

#endif



#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT

int sysctl_legacy_va_layout;
@@ -957,6 +954,14 @@ static ctl_table fs_table[] = { 
		.mode		= 0644,

		.proc_handler	= &proc_dointvec,

	},

#ifdef CONFIG_INOTIFY

	{

		.ctl_name	= FS_INOTIFY,

		.procname	= "inotify",

		.mode		= 0555,

		.child		= inotify_table,

	},

#endif	

#endif

	{

		.ctl_name	= KERN_SETUID_DUMPABLE,
@@ -966,40 +971,6 @@ static ctl_table fs_table[] = { 
		.mode		= 0644,

		.proc_handler	= &proc_dointvec,

	},

#ifdef CONFIG_INOTIFY

	{

		.ctl_name	= INOTIFY_MAX_USER_DEVICES,

		.procname	= "max_user_devices",

		.data		= &inotify_max_user_devices,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec,

		.extra1		= &zero,

	},



	{

		.ctl_name	= INOTIFY_MAX_USER_WATCHES,

		.procname	= "max_user_watches",

		.data		= &inotify_max_user_watches,

		.maxlen		= sizeof(int),

		.mode		= 0644,

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec,

		.extra1		= &zero, 

	},



	{

		.ctl_name	= INOTIFY_MAX_QUEUED_EVENTS,

		.procname	= "max_queued_events",

		.data		= &inotify_max_queued_events,

		.maxlen		= sizeof(int),

		.mode		= 0644, 

		.proc_handler	= &proc_dointvec_minmax,

		.strategy	= &sysctl_intvec, 

		.extra1		= &zero

	},

#endif

	{ .ctl_name = 0 }

};