*
* Virtual Server: Context Limits
*
- * Copyright (C) 2004 Herbert Pötzl
+ * Copyright (C) 2004-2005 Herbert Pötzl
*
* V0.01 broken out from vcontext V0.05
*
*/
-#include <linux/config.h>
-#include <linux/vserver/limit.h>
-#include <linux/vserver/context.h>
-#include <linux/vserver/switch.h>
-#include <linux/vs_base.h>
+#include <linux/module.h>
#include <linux/vs_context.h>
#include <linux/vs_limit.h>
+#include <linux/vserver/limit.h>
+#include <linux/vserver/switch.h>
+#include <linux/vserver/limit_cmd.h>
#include <asm/errno.h>
#include <asm/uaccess.h>
+const char *vlimit_name[NUM_LIMITS] = {
+ [RLIMIT_CPU] = "CPU",
+ [RLIMIT_RSS] = "RSS",
+ [RLIMIT_NPROC] = "NPROC",
+ [RLIMIT_NOFILE] = "NOFILE",
+ [RLIMIT_MEMLOCK] = "VML",
+ [RLIMIT_AS] = "VM",
+ [RLIMIT_LOCKS] = "LOCKS",
+ [RLIMIT_SIGPENDING] = "SIGP",
+ [RLIMIT_MSGQUEUE] = "MSGQ",
+
+ [VLIMIT_NSOCK] = "NSOCK",
+ [VLIMIT_OPENFD] = "OPENFD",
+ [VLIMIT_ANON] = "ANON",
+ [VLIMIT_SHMEM] = "SHMEM",
+};
+
+EXPORT_SYMBOL_GPL(vlimit_name);
+
+
static int is_valid_rlimit(int id)
{
int valid = 0;
switch (id) {
- case RLIMIT_NPROC:
- case RLIMIT_AS:
- case RLIMIT_RSS:
- case RLIMIT_MEMLOCK:
- case RLIMIT_NOFILE:
- valid = 1;
- break;
+ case RLIMIT_RSS:
+ case RLIMIT_NPROC:
+ case RLIMIT_NOFILE:
+ case RLIMIT_MEMLOCK:
+ case RLIMIT_AS:
+
+ case VLIMIT_NSOCK:
+ case VLIMIT_OPENFD:
+ case VLIMIT_ANON:
+ case VLIMIT_SHMEM:
+ valid = 1;
+ break;
}
return valid;
}
limit = vxi->limit.rlim[id];
if (limit == RLIM_INFINITY)
return CRLIM_INFINITY;
- return limit;
+ return limit;
}
-int vc_get_rlimit(uint32_t id, void __user *data)
+static int do_get_rlimit(xid_t xid, uint32_t id,
+ uint64_t *minimum, uint64_t *softlimit, uint64_t *maximum)
{
struct vx_info *vxi;
- struct vcmd_ctx_rlimit_v0 vc_data;
- if (copy_from_user (&vc_data, data, sizeof(vc_data)))
- return -EFAULT;
- if (!is_valid_rlimit(vc_data.id))
- return -ENOTSUPP;
-
- vxi = locate_vx_info(id);
+ if (!is_valid_rlimit(id))
+ return -EINVAL;
+
+ vxi = lookup_vx_info(xid);
if (!vxi)
return -ESRCH;
- vc_data.maximum = vc_get_rlim(vxi, vc_data.id);
- vc_data.minimum = CRLIM_UNSET;
- vc_data.softlimit = CRLIM_UNSET;
+ if (minimum)
+ *minimum = CRLIM_UNSET;
+ if (softlimit)
+ *softlimit = CRLIM_UNSET;
+ if (maximum)
+ *maximum = vc_get_rlim(vxi, id);
put_vx_info(vxi);
+ return 0;
+}
+
+int vc_get_rlimit(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_rlimit_v0 vc_data;
+ int ret;
+
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ ret = do_get_rlimit(id, vc_data.id,
+ &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
+ if (ret)
+ return ret;
if (copy_to_user (data, &vc_data, sizeof(vc_data)))
return -EFAULT;
return 0;
}
-int vc_set_rlimit(uint32_t id, void __user *data)
+static int do_set_rlimit(xid_t xid, uint32_t id,
+ uint64_t minimum, uint64_t softlimit, uint64_t maximum)
{
struct vx_info *vxi;
+
+ if (!is_valid_rlimit(id))
+ return -EINVAL;
+
+ vxi = lookup_vx_info(xid);
+ if (!vxi)
+ return -ESRCH;
+
+ if (maximum != CRLIM_KEEP)
+ vxi->limit.rlim[id] = maximum;
+
+ put_vx_info(vxi);
+ return 0;
+}
+
+int vc_set_rlimit(uint32_t id, void __user *data)
+{
struct vcmd_ctx_rlimit_v0 vc_data;
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RESOURCE))
return -EPERM;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- if (!is_valid_rlimit(vc_data.id))
- return -ENOTSUPP;
- vxi = locate_vx_info(id);
- if (!vxi)
- return -ESRCH;
+ return do_set_rlimit(id, vc_data.id,
+ vc_data.minimum, vc_data.softlimit, vc_data.maximum);
+}
- if (vc_data.maximum != CRLIM_KEEP)
- vxi->limit.rlim[vc_data.id] = vc_data.maximum;
- printk("setting [%d] = %d\n", vc_data.id, (int)vc_data.maximum);
- put_vx_info(vxi);
+#ifdef CONFIG_IA32_EMULATION
+
+int vc_set_rlimit_x32(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_rlimit_v0_x32 vc_data;
+
+ if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RESOURCE))
+ return -EPERM;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ return do_set_rlimit(id, vc_data.id,
+ vc_data.minimum, vc_data.softlimit, vc_data.maximum);
+}
+
+int vc_get_rlimit_x32(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_rlimit_v0_x32 vc_data;
+ int ret;
+
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+ ret = do_get_rlimit(id, vc_data.id,
+ &vc_data.minimum, &vc_data.softlimit, &vc_data.maximum);
+ if (ret)
+ return ret;
+
+ if (copy_to_user (data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
return 0;
}
+#endif /* CONFIG_IA32_EMULATION */
+
+
int vc_get_rlimit_mask(uint32_t id, void __user *data)
{
static struct vcmd_ctx_rlimit_mask_v0 mask = {
, /* softlimit */
0
, /* maximum */
+ (1 << RLIMIT_RSS) |
(1 << RLIMIT_NPROC) |
(1 << RLIMIT_NOFILE) |
(1 << RLIMIT_MEMLOCK) |
+ (1 << RLIMIT_LOCKS) |
(1 << RLIMIT_AS) |
- (1 << RLIMIT_RSS)
+ (1 << VLIMIT_ANON) |
+ 0
};
if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RESOURCE))
return -EPERM;
if (copy_to_user(data, &mask, sizeof(mask)))
- return -EFAULT;
+ return -EFAULT;
return 0;
}
v = atomic_read(&vxi->limit.rcur[RLIMIT_RSS]);
val->freeram = (v < val->totalram) ? val->totalram - v : 0;
val->bufferram = 0;
- val->totalhigh = 0;
- val->freehigh = 0;
+ val->totalhigh = 0;
+ val->freehigh = 0;
return;
}
void vx_vsi_swapinfo(struct sysinfo *val)
{
struct vx_info *vxi = current->vx_info;
- unsigned long w,v;
+ unsigned long v, w;
v = vxi->limit.rlim[RLIMIT_RSS];
w = vxi->limit.rlim[RLIMIT_AS];
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