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-rw-r--r--fs/inotify.c49
-rw-r--r--include/linux/sysctl.h12
-rw-r--r--kernel/sysctl.c51
3 files changed, 62 insertions, 50 deletions
diff --git a/fs/inotify.c b/fs/inotify.c
index e423bfe..fb48031 100644
--- a/fs/inotify.c
+++ b/fs/inotify.c
@@ -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);
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index ce19a2a..bfbbe94 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -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/ */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b240e2c..e60b9c3 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -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 }
};
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