*
* Virtual Server: Context Support
*
- * Copyright (C) 2003-2005 Herbert Pötzl
+ * Copyright (C) 2003-2007 Herbert Pötzl
*
* V0.01 context helper
* V0.02 vx_ctx_kill syscall command
* V0.09 revert to non RCU for now
* V0.10 and back to working RCU hash
* V0.11 and back to locking again
- * V0.12 have __create claim() the vxi
+ * V0.12 referenced context store
+ * V0.13 separate per cpu data
+ * V0.14 changed vcmds to vxi arg
+ * V0.15 added context stat
+ * V0.16 have __create claim() the vxi
*
*/
#include <linux/slab.h>
#include <linux/types.h>
-#include <linux/namespace.h>
+#include <linux/mnt_namespace.h>
+#include <linux/pid_namespace.h>
#include <linux/sched.h>
+#include <linux/vserver/context.h>
#include <linux/vserver/network.h>
#include <linux/vserver/legacy.h>
-#include <linux/vserver/limit.h>
#include <linux/vserver/debug.h>
+#include <linux/vserver/limit.h>
#include <linux/vserver/limit_int.h>
+#include <linux/vserver/space.h>
#include <linux/vs_context.h>
#include <linux/vs_limit.h>
#include <asm/errno.h>
#include "cvirt_init.h"
+#include "cacct_init.h"
#include "limit_init.h"
#include "sched_init.h"
+atomic_t vx_global_ctotal = ATOMIC_INIT(0);
+atomic_t vx_global_cactive = ATOMIC_INIT(0);
+
+
+/* now inactive context structures */
+
+static struct hlist_head vx_info_inactive = HLIST_HEAD_INIT;
+
+static spinlock_t vx_info_inactive_lock = SPIN_LOCK_UNLOCKED;
+
+
/* __alloc_vx_info()
* allocate an initialized vx_info struct
static struct vx_info *__alloc_vx_info(xid_t xid)
{
struct vx_info *new = NULL;
+ int cpu;
vxdprintk(VXD_CBIT(xid, 0), "alloc_vx_info(%d)*", xid);
return 0;
memset (new, 0, sizeof(struct vx_info));
+#ifdef CONFIG_SMP
+ new->ptr_pc = alloc_percpu(struct _vx_info_pc);
+ if (!new->ptr_pc)
+ goto error;
+#endif
new->vx_id = xid;
INIT_HLIST_NODE(&new->vx_hlist);
atomic_set(&new->vx_usecnt, 0);
init_waitqueue_head(&new->vx_wait);
/* prepare reaper */
- get_task_struct(child_reaper);
- new->vx_reaper = child_reaper;
+ get_task_struct(init_pid_ns.child_reaper);
+ new->vx_reaper = init_pid_ns.child_reaper;
/* rest of init goes here */
vx_info_init_limit(&new->limit);
vx_info_init_cvirt(&new->cvirt);
vx_info_init_cacct(&new->cacct);
+ /* per cpu data structures */
+ for_each_possible_cpu(cpu) {
+ vx_info_init_sched_pc(
+ &vx_per_cpu(new, sched_pc, cpu), cpu);
+ vx_info_init_cvirt_pc(
+ &vx_per_cpu(new, cvirt_pc, cpu), cpu);
+ }
+
new->vx_flags = VXF_INIT_SET;
new->vx_bcaps = CAP_INIT_EFF_SET;
new->vx_ccaps = 0;
+ new->vx_cap_bset = cap_bset;
new->reboot_cmd = 0;
new->exit_code = 0;
vxdprintk(VXD_CBIT(xid, 0),
"alloc_vx_info(%d) = %p", xid, new);
vxh_alloc_vx_info(new);
+ atomic_inc(&vx_global_ctotal);
return new;
+#ifdef CONFIG_SMP
+error:
+ kfree(new);
+ return 0;
+#endif
}
/* __dealloc_vx_info()
static void __dealloc_vx_info(struct vx_info *vxi)
{
+ int cpu;
+
vxdprintk(VXD_CBIT(xid, 0),
"dealloc_vx_info(%p)", vxi);
vxh_dealloc_vx_info(vxi);
- vxi->vx_hlist.next = LIST_POISON1;
vxi->vx_id = -1;
vx_info_exit_limit(&vxi->limit);
vx_info_exit_cvirt(&vxi->cvirt);
vx_info_exit_cacct(&vxi->cacct);
+ for_each_possible_cpu(cpu) {
+ vx_info_exit_sched_pc(
+ &vx_per_cpu(vxi, sched_pc, cpu), cpu);
+ vx_info_exit_cvirt_pc(
+ &vx_per_cpu(vxi, cvirt_pc, cpu), cpu);
+ }
+
vxi->vx_state |= VXS_RELEASED;
+
+#ifdef CONFIG_SMP
+ free_percpu(vxi->ptr_pc);
+#endif
kfree(vxi);
+ atomic_dec(&vx_global_ctotal);
}
static void __shutdown_vx_info(struct vx_info *vxi)
{
- struct namespace *namespace;
+ struct nsproxy *nsproxy;
struct fs_struct *fs;
might_sleep();
vxi->vx_state |= VXS_SHUTDOWN;
vs_state_change(vxi, VSC_SHUTDOWN);
- namespace = xchg(&vxi->vx_namespace, NULL);
- if (namespace)
- put_namespace(namespace);
-
+ nsproxy = xchg(&vxi->vx_nsproxy, NULL);
fs = xchg(&vxi->vx_fs, NULL);
+
+ if (nsproxy)
+ put_nsproxy(nsproxy);
if (fs)
put_fs_struct(fs);
}
void free_vx_info(struct vx_info *vxi)
{
+ unsigned long flags;
+
/* context shutdown is mandatory */
BUG_ON(!vx_info_state(vxi, VXS_SHUTDOWN));
BUG_ON(vx_info_state(vxi, VXS_HASHED));
- BUG_ON(vxi->vx_namespace);
+ BUG_ON(vxi->vx_nsproxy);
BUG_ON(vxi->vx_fs);
+ spin_lock_irqsave(&vx_info_inactive_lock, flags);
+ hlist_del(&vxi->vx_hlist);
+ spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
+
__dealloc_vx_info(vxi);
}
#define VX_HASH_SIZE 13
-struct hlist_head vx_info_hash[VX_HASH_SIZE];
+static struct hlist_head vx_info_hash[VX_HASH_SIZE] =
+ { [0 ... VX_HASH_SIZE-1] = HLIST_HEAD_INIT };
static spinlock_t vx_info_hash_lock = SPIN_LOCK_UNLOCKED;
vxi->vx_state |= VXS_HASHED;
head = &vx_info_hash[__hashval(vxi->vx_id)];
hlist_add_head(&vxi->vx_hlist, head);
+ atomic_inc(&vx_global_cactive);
}
/* __unhash_vx_info()
static inline void __unhash_vx_info(struct vx_info *vxi)
{
+ unsigned long flags;
+
+ vxd_assert_lock(&vx_info_hash_lock);
vxdprintk(VXD_CBIT(xid, 4),
- "__unhash_vx_info: %p[#%d]", vxi, vxi->vx_id);
- spin_lock(&vx_info_hash_lock);
+ "__unhash_vx_info: %p[#%d.%d.%d]", vxi, vxi->vx_id,
+ atomic_read(&vxi->vx_usecnt), atomic_read(&vxi->vx_tasks));
vxh_unhash_vx_info(vxi);
/* context must be hashed */
BUG_ON(!vx_info_state(vxi, VXS_HASHED));
+ /* but without tasks */
+ BUG_ON(atomic_read(&vxi->vx_tasks));
vxi->vx_state &= ~VXS_HASHED;
- hlist_del(&vxi->vx_hlist);
- spin_unlock(&vx_info_hash_lock);
+ hlist_del_init(&vxi->vx_hlist);
+ spin_lock_irqsave(&vx_info_inactive_lock, flags);
+ hlist_add_head(&vxi->vx_hlist, &vx_info_inactive);
+ spin_unlock_irqrestore(&vx_info_inactive_lock, flags);
+ atomic_dec(&vx_global_cactive);
}
/* dynamic context requested */
if (id == VX_DYNAMIC_ID) {
+#ifdef CONFIG_VSERVER_DYNAMIC_IDS
id = __vx_dynamic_id();
if (!id) {
printk(KERN_ERR "no dynamic context available.\n");
goto out_unlock;
}
new->vx_id = id;
+#else
+ printk(KERN_ERR "dynamic contexts disabled.\n");
+ goto out_unlock;
+#endif
}
/* existing context requested */
else if ((vxi = __lookup_vx_info(id))) {
/* dynamic context requested */
if (id == VX_DYNAMIC_ID) {
+#ifdef CONFIG_VSERVER_DYNAMIC_IDS
id = __vx_dynamic_id();
if (!id) {
printk(KERN_ERR "no dynamic context available.\n");
goto out_unlock;
}
new->vx_id = id;
+#else
+ printk(KERN_ERR "dynamic contexts disabled.\n");
+ vxi = ERR_PTR(-EINVAL);
+ goto out_unlock;
+#endif
}
/* static context requested */
else if ((vxi = __lookup_vx_info(id))) {
vxi = ERR_PTR(-EEXIST);
goto out_unlock;
}
+#ifdef CONFIG_VSERVER_DYNAMIC_IDS
/* dynamic xid creation blocker */
else if (id >= MIN_D_CONTEXT) {
vxdprintk(VXD_CBIT(xid, 0),
vxi = ERR_PTR(-EINVAL);
goto out_unlock;
}
+#endif
/* new context */
vxdprintk(VXD_CBIT(xid, 0),
void unhash_vx_info(struct vx_info *vxi)
{
__shutdown_vx_info(vxi);
+ spin_lock(&vx_info_hash_lock);
__unhash_vx_info(vxi);
+ spin_unlock(&vx_info_hash_lock);
__wakeup_vx_info(vxi);
}
#ifdef CONFIG_PROC_FS
+/* get_xid_list()
+
+ * get a subset of hashed xids for proc
+ * assumes size is at least one */
+
int get_xid_list(int index, unsigned int *xids, int size)
{
int hindex, nr_xids = 0;
+ /* only show current and children */
+ if (!vx_check(0, VS_ADMIN|VS_WATCH)) {
+ if (index > 0)
+ return 0;
+ xids[nr_xids] = vx_current_xid();
+ return 1;
+ }
+
for (hindex = 0; hindex < VX_HASH_SIZE; hindex++) {
struct hlist_head *head = &vx_info_hash[hindex];
struct hlist_node *pos;
}
#endif
+#ifdef CONFIG_VSERVER_DEBUG
+
+void dump_vx_info_inactive(int level)
+{
+ struct hlist_node *entry, *next;
+
+ hlist_for_each_safe(entry, next, &vx_info_inactive) {
+ struct vx_info *vxi =
+ list_entry(entry, struct vx_info, vx_hlist);
+
+ dump_vx_info(vxi, level);
+ }
+}
+
+#endif
int vx_migrate_user(struct task_struct *p, struct vx_info *vxi)
{
if (!p || !vxi)
BUG();
+
+ if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0))
+ return -EACCES;
+
new_user = alloc_uid(vxi->vx_id, p->uid);
if (!new_user)
return -ENOMEM;
return 0;
}
-void vx_mask_bcaps(struct vx_info *vxi, struct task_struct *p)
+void vx_mask_cap_bset(struct vx_info *vxi, struct task_struct *p)
{
- p->cap_effective &= vxi->vx_bcaps;
- p->cap_inheritable &= vxi->vx_bcaps;
- p->cap_permitted &= vxi->vx_bcaps;
+ p->cap_effective &= vxi->vx_cap_bset;
+ p->cap_inheritable &= vxi->vx_cap_bset;
+ p->cap_permitted &= vxi->vx_cap_bset;
}
return total;
}
+
+/* for *space compatibility */
+
+asmlinkage long sys_unshare(unsigned long);
+
/*
* migrate task to new context
* gets vxi, puts old_vxi on change
+ * optionally unshares namespaces (hack)
*/
-int vx_migrate_task(struct task_struct *p, struct vx_info *vxi)
+int vx_migrate_task(struct task_struct *p, struct vx_info *vxi, int unshare)
{
struct vx_info *old_vxi;
int ret = 0;
if (!p || !vxi)
BUG();
- old_vxi = task_get_vx_info(p);
- if (old_vxi == vxi)
- goto out;
-
vxdprintk(VXD_CBIT(xid, 5),
"vx_migrate_task(%p,%p[#%d.%d])", p, vxi,
vxi->vx_id, atomic_read(&vxi->vx_usecnt));
+ if (vx_info_flags(vxi, VXF_INFO_PRIVATE, 0) &&
+ !vx_info_flags(vxi, VXF_STATE_SETUP, 0))
+ return -EACCES;
+
+ if (vx_info_state(vxi, VXS_SHUTDOWN))
+ return -EFAULT;
+
+ old_vxi = task_get_vx_info(p);
+ if (old_vxi == vxi)
+ goto out;
+
if (!(ret = vx_migrate_user(p, vxi))) {
int openfd;
if (old_vxi) {
atomic_dec(&old_vxi->cvirt.nr_threads);
atomic_dec(&old_vxi->cvirt.nr_running);
- atomic_dec(&old_vxi->limit.rcur[RLIMIT_NPROC]);
+ __rlim_dec(&old_vxi->limit, RLIMIT_NPROC);
/* FIXME: what about the struct files here? */
- atomic_sub(openfd, &old_vxi->limit.rcur[VLIMIT_OPENFD]);
+ __rlim_sub(&old_vxi->limit, VLIMIT_OPENFD, openfd);
+ /* account for the executable */
+ __rlim_dec(&old_vxi->limit, VLIMIT_DENTRY);
}
atomic_inc(&vxi->cvirt.nr_threads);
atomic_inc(&vxi->cvirt.nr_running);
- atomic_inc(&vxi->limit.rcur[RLIMIT_NPROC]);
+ __rlim_inc(&vxi->limit, RLIMIT_NPROC);
/* FIXME: what about the struct files here? */
- atomic_add(openfd, &vxi->limit.rcur[VLIMIT_OPENFD]);
+ __rlim_add(&vxi->limit, VLIMIT_OPENFD, openfd);
+ /* account for the executable */
+ __rlim_inc(&vxi->limit, VLIMIT_DENTRY);
if (old_vxi) {
release_vx_info(old_vxi, p);
"moved task %p into vxi:%p[#%d]",
p, vxi, vxi->vx_id);
- vx_mask_bcaps(vxi, p);
+ vx_mask_cap_bset(vxi, p);
task_unlock(p);
+
+ /* hack for *spaces to provide compatibility */
+ if (unshare) {
+ ret = sys_unshare(CLONE_NEWUTS|CLONE_NEWIPC);
+ vx_set_space(vxi, CLONE_NEWUTS|CLONE_NEWIPC);
+ }
}
out:
put_vx_info(old_vxi);
vxi->vx_initpid = 0;
}
+
void vx_set_persistent(struct vx_info *vxi)
{
vxdprintk(VXD_CBIT(xid, 6),
}
}
-void exit_vx_info_early(struct task_struct *p, int code)
+void exit_vx_info_early(struct task_struct *p, int code)
{
struct vx_info *vxi = p->vx_info;
if (vxi->vx_initpid == p->tgid)
vx_exit_init(vxi, p, code);
if (vxi->vx_reaper == p)
- vx_set_reaper(vxi, child_reaper);
+ vx_set_reaper(vxi, init_pid_ns.child_reaper);
}
}
if (id) {
struct task_struct *tsk;
- if (!vx_check(0, VX_ADMIN|VX_WATCH))
+ if (!vx_check(0, VS_ADMIN|VS_WATCH))
return -EPERM;
read_lock(&tasklist_lock);
}
-int vc_vx_info(uint32_t id, void __user *data)
+int vc_vx_info(struct vx_info *vxi, void __user *data)
{
- struct vx_info *vxi;
struct vcmd_vx_info_v0 vc_data;
- if (!vx_check(0, VX_ADMIN))
- return -ENOSYS;
- if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RESOURCE))
- return -EPERM;
-
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
-
vc_data.xid = vxi->vx_id;
vc_data.initpid = vxi->vx_initpid;
- put_vx_info(vxi);
+
+ if (copy_to_user (data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
+ return 0;
+}
+
+
+int vc_ctx_stat(struct vx_info *vxi, void __user *data)
+{
+ struct vcmd_ctx_stat_v0 vc_data;
+
+ vc_data.usecnt = atomic_read(&vxi->vx_usecnt);
+ vc_data.tasks = atomic_read(&vxi->vx_tasks);
if (copy_to_user (data, &vc_data, sizeof(vc_data)))
return -EFAULT;
struct vx_info *new_vxi;
int ret;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
if (data && copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
if (vs_state_change(new_vxi, VSC_STARTUP))
goto out;
- ret = vx_migrate_task(current, new_vxi);
+ ret = vx_migrate_task(current, new_vxi, (!data));
if (ret)
goto out;
}
-int vc_ctx_migrate(uint32_t id, void __user *data)
+int vc_ctx_migrate(struct vx_info *vxi, void __user *data)
{
struct vcmd_ctx_migrate vc_data = { .flagword = 0 };
- struct vx_info *vxi;
+ int ret;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
if (data && copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- /* dirty hack until Spectator becomes a cap */
- if (id == 1) {
- current->xid = 1;
- return 0;
- }
-
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
- vx_migrate_task(current, vxi);
+ ret = vx_migrate_task(current, vxi, 0);
+ if (ret)
+ return ret;
if (vc_data.flagword & VXM_SET_INIT)
- vx_set_init(vxi, current);
+ ret = vx_set_init(vxi, current);
+ if (ret)
+ return ret;
if (vc_data.flagword & VXM_SET_REAPER)
- vx_set_reaper(vxi, current);
- put_vx_info(vxi);
- return 0;
+ ret = vx_set_reaper(vxi, current);
+ return ret;
}
-int vc_get_cflags(uint32_t id, void __user *data)
+int vc_get_cflags(struct vx_info *vxi, void __user *data)
{
- struct vx_info *vxi;
struct vcmd_ctx_flags_v0 vc_data;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
-
vc_data.flagword = vxi->vx_flags;
/* special STATE flag handling */
- vc_data.mask = vx_mask_flags(~0UL, vxi->vx_flags, VXF_ONE_TIME);
-
- put_vx_info(vxi);
+ vc_data.mask = vs_mask_flags(~0UL, vxi->vx_flags, VXF_ONE_TIME);
if (copy_to_user (data, &vc_data, sizeof(vc_data)))
return -EFAULT;
return 0;
}
-int vc_set_cflags(uint32_t id, void __user *data)
+int vc_set_cflags(struct vx_info *vxi, void __user *data)
{
- struct vx_info *vxi;
struct vcmd_ctx_flags_v0 vc_data;
uint64_t mask, trigger;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
-
/* special STATE flag handling */
- mask = vx_mask_mask(vc_data.mask, vxi->vx_flags, VXF_ONE_TIME);
+ mask = vs_mask_mask(vc_data.mask, vxi->vx_flags, VXF_ONE_TIME);
trigger = (mask & vxi->vx_flags) ^ (mask & vc_data.flagword);
if (vxi == current->vx_info) {
if (trigger & VXF_STATE_SETUP)
- vx_mask_bcaps(vxi, current);
+ vx_mask_cap_bset(vxi, current);
if (trigger & VXF_STATE_INIT) {
- vx_set_init(vxi, current);
- vx_set_reaper(vxi, current);
+ int ret;
+
+ ret = vx_set_init(vxi, current);
+ if (ret)
+ return ret;
+ ret = vx_set_reaper(vxi, current);
+ if (ret)
+ return ret;
}
}
- vxi->vx_flags = vx_mask_flags(vxi->vx_flags,
+ vxi->vx_flags = vs_mask_flags(vxi->vx_flags,
vc_data.flagword, mask);
if (trigger & VXF_PERSISTENT)
vx_update_persistent(vxi);
- put_vx_info(vxi);
return 0;
}
-int vc_get_ccaps(uint32_t id, void __user *data)
+static int do_get_caps(struct vx_info *vxi, uint64_t *bcaps, uint64_t *ccaps)
+{
+ if (bcaps)
+ *bcaps = vxi->vx_bcaps;
+ if (ccaps)
+ *ccaps = vxi->vx_ccaps;
+
+ return 0;
+}
+
+int vc_get_ccaps_v0(struct vx_info *vxi, void __user *data)
{
- struct vx_info *vxi;
struct vcmd_ctx_caps_v0 vc_data;
+ int ret;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
+ ret = do_get_caps(vxi, &vc_data.bcaps, &vc_data.ccaps);
+ if (ret)
+ return ret;
+ vc_data.cmask = ~0UL;
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
+ if (copy_to_user (data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
+ return 0;
+}
- vc_data.bcaps = vxi->vx_bcaps;
- vc_data.ccaps = vxi->vx_ccaps;
+int vc_get_ccaps(struct vx_info *vxi, void __user *data)
+{
+ struct vcmd_ctx_caps_v1 vc_data;
+ int ret;
+
+ ret = do_get_caps(vxi, NULL, &vc_data.ccaps);
+ if (ret)
+ return ret;
vc_data.cmask = ~0UL;
- put_vx_info(vxi);
if (copy_to_user (data, &vc_data, sizeof(vc_data)))
return -EFAULT;
return 0;
}
-int vc_set_ccaps(uint32_t id, void __user *data)
+static int do_set_caps(struct vx_info *vxi,
+ uint64_t bcaps, uint64_t bmask, uint64_t ccaps, uint64_t cmask)
+{
+ vxi->vx_bcaps = vs_mask_flags(vxi->vx_bcaps, bcaps, bmask);
+ vxi->vx_ccaps = vs_mask_flags(vxi->vx_ccaps, ccaps, cmask);
+
+ return 0;
+}
+
+int vc_set_ccaps_v0(struct vx_info *vxi, void __user *data)
{
- struct vx_info *vxi;
struct vcmd_ctx_caps_v0 vc_data;
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- vxi = lookup_vx_info(id);
- if (!vxi)
- return -ESRCH;
-
- vxi->vx_bcaps &= vc_data.bcaps;
- vxi->vx_ccaps = vx_mask_flags(vxi->vx_ccaps,
+ /* simulate old &= behaviour for bcaps */
+ return do_set_caps(vxi, 0, ~vc_data.bcaps,
vc_data.ccaps, vc_data.cmask);
- put_vx_info(vxi);
+}
+
+int vc_set_ccaps(struct vx_info *vxi, void __user *data)
+{
+ struct vcmd_ctx_caps_v1 vc_data;
+
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ return do_set_caps(vxi, 0, 0, vc_data.ccaps, vc_data.cmask);
+}
+
+int vc_get_bcaps(struct vx_info *vxi, void __user *data)
+{
+ struct vcmd_bcaps vc_data;
+ int ret;
+
+ ret = do_get_caps(vxi, &vc_data.bcaps, NULL);
+ if (ret)
+ return ret;
+ vc_data.bmask = ~0UL;
+
+ if (copy_to_user (data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
return 0;
}
+int vc_set_bcaps(struct vx_info *vxi, void __user *data)
+{
+ struct vcmd_bcaps vc_data;
+
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ return do_set_caps(vxi, vc_data.bcaps, vc_data.bmask, 0, 0);
+}
+
#include <linux/module.h>
EXPORT_SYMBOL_GPL(free_vx_info);
git://git.onelab.eu / linux-2.6.git / blobdiff