[patch 1/3] inotify: move sysctl
From: Robert Love
Date: Wed Jul 13 2005 - 11:40:35 EST
Linus,
Attached patch moves the inotify sysctl knobs to "/proc/sys/fs/inotify"
from "/proc/sys/fs". Also some related cleanup.
Patch is against current git tree. Please, apply.
Robert Love
Signed-off-by: Robert Love <rml@xxxxxxxxxx>
fs/inotify.c | 49 +++++++++++++++++++++++++++++++++++++++++++----
include/linux/sysctl.h | 12 +++++------
kernel/sysctl.c | 51 ++++++++++---------------------------------------
3 files changed, 62 insertions(+), 50 deletions(-)
diff -urN linux-2.6.13-rc3/fs/inotify.c linux/fs/inotify.c
--- linux-2.6.13-rc3/fs/inotify.c 2005-07-13 10:51:12.000000000 -0400
+++ linux/fs/inotify.c 2005-07-13 12:36:12.000000000 -0400
@@ -45,8 +45,8 @@
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 @@
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 @@
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 @@
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);
diff -urN linux-2.6.13-rc3/include/linux/sysctl.h linux/include/linux/sysctl.h
--- linux-2.6.13-rc3/include/linux/sysctl.h 2005-07-13 10:51:15.000000000 -0400
+++ linux/include/linux/sysctl.h 2005-07-13 11:11:24.000000000 -0400
@@ -61,8 +61,7 @@
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 @@
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 @@
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/ */
diff -urN linux-2.6.13-rc3/kernel/sysctl.c linux/kernel/sysctl.c
--- linux-2.6.13-rc3/kernel/sysctl.c 2005-07-13 10:51:15.000000000 -0400
+++ linux/kernel/sysctl.c 2005-07-13 12:34:20.000000000 -0400
@@ -67,12 +67,6 @@
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 @@
#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 @@
.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 @@
.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 }
};
-
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