* Copyright (C) 2004-2005 Herbert Pötzl
*
* V0.01 initial version
+ * V0.02 compat32 splitup
*
*/
#include <linux/namespace.h>
#include <linux/namei.h>
#include <linux/statfs.h>
+#include <linux/compat.h>
#include <linux/vserver/switch.h>
#include <linux/vs_context.h>
#include <linux/vs_dlimit.h>
+#include <linux/vserver/dlimit_cmd.h>
#include <asm/errno.h>
#include <asm/uaccess.h>
-int vc_add_dlimit(uint32_t id, void __user *data)
+int do_addrem_dlimit(uint32_t id, const char __user *name,
+ uint32_t flags, int add)
{
struct nameidata nd;
- struct vcmd_ctx_dlimit_base_v0 vc_data;
int ret;
- if (!vx_check(0, VX_ADMIN))
- return -ENOSYS;
- if (copy_from_user (&vc_data, data, sizeof(vc_data)))
- return -EFAULT;
-
- ret = user_path_walk_link(vc_data.name, &nd);
+ ret = user_path_walk_link(name, &nd);
if (!ret) {
struct super_block *sb;
struct dl_info *dli;
if (!(sb = nd.dentry->d_inode->i_sb))
goto out_release;
- dli = __alloc_dl_info(sb, id);
- spin_lock(&dl_info_hash_lock);
-
- ret = -EEXIST;
- if (__lookup_dl_info(sb, id))
- goto out_unlock;
- __hash_dl_info(dli);
- dli = NULL;
+ if (add) {
+ dli = __alloc_dl_info(sb, id);
+ spin_lock(&dl_info_hash_lock);
+
+ ret = -EEXIST;
+ if (__lookup_dl_info(sb, id))
+ goto out_unlock;
+ __hash_dl_info(dli);
+ dli = NULL;
+ } else {
+ spin_lock(&dl_info_hash_lock);
+ dli = __lookup_dl_info(sb, id);
+
+ ret = -ESRCH;
+ if (!dli)
+ goto out_unlock;
+ __unhash_dl_info(dli);
+ }
ret = 0;
-
out_unlock:
spin_unlock(&dl_info_hash_lock);
- if (dli)
+ if (add && dli)
__dealloc_dl_info(dli);
out_release:
path_release(&nd);
return ret;
}
+int vc_add_dlimit(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_dlimit_base_v0 vc_data;
+
+ if (!vx_check(0, VX_ADMIN))
+ return -ENOSYS;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 1);
+}
int vc_rem_dlimit(uint32_t id, void __user *data)
{
- struct nameidata nd;
struct vcmd_ctx_dlimit_base_v0 vc_data;
- int ret;
if (!vx_check(0, VX_ADMIN))
return -ENOSYS;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- ret = user_path_walk_link(vc_data.name, &nd);
- if (!ret) {
- struct super_block *sb;
- struct dl_info *dli;
-
- ret = -EINVAL;
- if (!nd.dentry->d_inode)
- goto out_release;
- if (!(sb = nd.dentry->d_inode->i_sb))
- goto out_release;
+ return do_addrem_dlimit(id, vc_data.name, vc_data.flags, 0);
+}
- spin_lock(&dl_info_hash_lock);
- dli = __lookup_dl_info(sb, id);
+#ifdef CONFIG_COMPAT
- ret = -ESRCH;
- if (!dli)
- goto out_unlock;
+int vc_add_dlimit_x32(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
- __unhash_dl_info(dli);
- ret = 0;
+ if (!vx_check(0, VX_ADMIN))
+ return -ENOSYS;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
- out_unlock:
- spin_unlock(&dl_info_hash_lock);
- out_release:
- path_release(&nd);
- }
- return ret;
+ return do_addrem_dlimit(id,
+ compat_ptr(vc_data.name_ptr), vc_data.flags, 1);
}
-
-int vc_set_dlimit(uint32_t id, void __user *data)
+int vc_rem_dlimit_x32(uint32_t id, void __user *data)
{
- struct nameidata nd;
- struct vcmd_ctx_dlimit_v0 vc_data;
- int ret;
+ struct vcmd_ctx_dlimit_base_v0_x32 vc_data;
if (!vx_check(0, VX_ADMIN))
return -ENOSYS;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- ret = user_path_walk_link(vc_data.name, &nd);
+ return do_addrem_dlimit(id,
+ compat_ptr(vc_data.name_ptr), vc_data.flags, 0);
+}
+
+#endif /* CONFIG_COMPAT */
+
+
+static inline
+int do_set_dlimit(uint32_t id, const char __user *name,
+ uint32_t space_used, uint32_t space_total,
+ uint32_t inodes_used, uint32_t inodes_total,
+ uint32_t reserved, uint32_t flags)
+{
+ struct nameidata nd;
+ int ret;
+
+ ret = user_path_walk_link(name, &nd);
if (!ret) {
struct super_block *sb;
struct dl_info *dli;
goto out_release;
if (!(sb = nd.dentry->d_inode->i_sb))
goto out_release;
- if ((vc_data.reserved != (uint32_t)CDLIM_KEEP &&
- vc_data.reserved > 100) ||
- (vc_data.inodes_used != (uint32_t)CDLIM_KEEP &&
- vc_data.inodes_used > vc_data.inodes_total) ||
- (vc_data.space_used != (uint32_t)CDLIM_KEEP &&
- vc_data.space_used > vc_data.space_total))
+ if ((reserved != (uint32_t)CDLIM_KEEP &&
+ reserved > 100) ||
+ (inodes_used != (uint32_t)CDLIM_KEEP &&
+ inodes_used > inodes_total) ||
+ (space_used != (uint32_t)CDLIM_KEEP &&
+ space_used > space_total))
goto out_release;
ret = -ESRCH;
spin_lock(&dli->dl_lock);
- if (vc_data.inodes_used != (uint32_t)CDLIM_KEEP)
- dli->dl_inodes_used = vc_data.inodes_used;
- if (vc_data.inodes_total != (uint32_t)CDLIM_KEEP)
- dli->dl_inodes_total = vc_data.inodes_total;
- if (vc_data.space_used != (uint32_t)CDLIM_KEEP) {
- dli->dl_space_used = vc_data.space_used;
+ if (inodes_used != (uint32_t)CDLIM_KEEP)
+ dli->dl_inodes_used = inodes_used;
+ if (inodes_total != (uint32_t)CDLIM_KEEP)
+ dli->dl_inodes_total = inodes_total;
+ if (space_used != (uint32_t)CDLIM_KEEP) {
+ dli->dl_space_used = space_used;
dli->dl_space_used <<= 10;
}
- if (vc_data.space_total == (uint32_t)CDLIM_INFINITY)
+ if (space_total == (uint32_t)CDLIM_INFINITY)
dli->dl_space_total = (uint64_t)CDLIM_INFINITY;
- else if (vc_data.space_total != (uint32_t)CDLIM_KEEP) {
- dli->dl_space_total = vc_data.space_total;
+ else if (space_total != (uint32_t)CDLIM_KEEP) {
+ dli->dl_space_total = space_total;
dli->dl_space_total <<= 10;
}
- if (vc_data.reserved != (uint32_t)CDLIM_KEEP)
- dli->dl_nrlmult = (1 << 10) * (100 - vc_data.reserved) / 100;
+ if (reserved != (uint32_t)CDLIM_KEEP)
+ dli->dl_nrlmult = (1 << 10) * (100 - reserved) / 100;
spin_unlock(&dli->dl_lock);
return ret;
}
-int vc_get_dlimit(uint32_t id, void __user *data)
+int vc_set_dlimit(uint32_t id, void __user *data)
{
- struct nameidata nd;
struct vcmd_ctx_dlimit_v0 vc_data;
- int ret;
if (!vx_check(0, VX_ADMIN))
return -ENOSYS;
if (copy_from_user (&vc_data, data, sizeof(vc_data)))
return -EFAULT;
- ret = user_path_walk_link(vc_data.name, &nd);
+ return do_set_dlimit(id, vc_data.name,
+ vc_data.space_used, vc_data.space_total,
+ vc_data.inodes_used, vc_data.inodes_total,
+ vc_data.reserved, vc_data.flags);
+}
+
+#ifdef CONFIG_COMPAT
+
+int vc_set_dlimit_x32(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_dlimit_v0_x32 vc_data;
+
+ if (!vx_check(0, VX_ADMIN))
+ return -ENOSYS;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ return do_set_dlimit(id, compat_ptr(vc_data.name_ptr),
+ vc_data.space_used, vc_data.space_total,
+ vc_data.inodes_used, vc_data.inodes_total,
+ vc_data.reserved, vc_data.flags);
+}
+
+#endif /* CONFIG_COMPAT */
+
+
+static inline
+int do_get_dlimit(uint32_t id, const char __user *name,
+ uint32_t *space_used, uint32_t *space_total,
+ uint32_t *inodes_used, uint32_t *inodes_total,
+ uint32_t *reserved, uint32_t *flags)
+{
+ struct nameidata nd;
+ int ret;
+
+ ret = user_path_walk_link(name, &nd);
if (!ret) {
struct super_block *sb;
struct dl_info *dli;
goto out_release;
if (!(sb = nd.dentry->d_inode->i_sb))
goto out_release;
- if (vc_data.reserved > 100 ||
- vc_data.inodes_used > vc_data.inodes_total ||
- vc_data.space_used > vc_data.space_total)
- goto out_release;
ret = -ESRCH;
dli = locate_dl_info(sb, id);
goto out_release;
spin_lock(&dli->dl_lock);
- vc_data.inodes_used = dli->dl_inodes_used;
- vc_data.inodes_total = dli->dl_inodes_total;
- vc_data.space_used = dli->dl_space_used >> 10;
+ *inodes_used = dli->dl_inodes_used;
+ *inodes_total = dli->dl_inodes_total;
+ *space_used = dli->dl_space_used >> 10;
if (dli->dl_space_total == (uint64_t)CDLIM_INFINITY)
- vc_data.space_total = (uint32_t)CDLIM_INFINITY;
+ *space_total = (uint32_t)CDLIM_INFINITY;
else
- vc_data.space_total = dli->dl_space_total >> 10;
+ *space_total = dli->dl_space_total >> 10;
- vc_data.reserved = 100 - ((dli->dl_nrlmult * 100 + 512) >> 10);
+ *reserved = 100 - ((dli->dl_nrlmult * 100 + 512) >> 10);
spin_unlock(&dli->dl_lock);
put_dl_info(dli);
ret = -EFAULT;
- if (copy_to_user(data, &vc_data, sizeof(vc_data)))
- goto out_release;
ret = 0;
out_release:
}
+int vc_get_dlimit(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_dlimit_v0 vc_data;
+ int ret;
+
+ if (!vx_check(0, VX_ADMIN))
+ return -ENOSYS;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ ret = do_get_dlimit(id, vc_data.name,
+ &vc_data.space_used, &vc_data.space_total,
+ &vc_data.inodes_used, &vc_data.inodes_total,
+ &vc_data.reserved, &vc_data.flags);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
+ return 0;
+}
+
+#ifdef CONFIG_COMPAT
+
+int vc_get_dlimit_x32(uint32_t id, void __user *data)
+{
+ struct vcmd_ctx_dlimit_v0_x32 vc_data;
+ int ret;
+
+ if (!vx_check(0, VX_ADMIN))
+ return -ENOSYS;
+ if (copy_from_user (&vc_data, data, sizeof(vc_data)))
+ return -EFAULT;
+
+ ret = do_get_dlimit(id, compat_ptr(vc_data.name_ptr),
+ &vc_data.space_used, &vc_data.space_total,
+ &vc_data.inodes_used, &vc_data.inodes_total,
+ &vc_data.reserved, &vc_data.flags);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(data, &vc_data, sizeof(vc_data)))
+ return -EFAULT;
+ return 0;
+}
+
+#endif /* CONFIG_COMPAT */
+
+
void vx_vsi_statfs(struct super_block *sb, struct kstatfs *buf)
{
struct dl_info *dli;
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