#ifdef CONFIG_X86
#include <asm/nmi.h>
#include <asm/stacktrace.h>
+#include <asm/io.h>
#endif
static int deprecated_sysctl_warning(struct __sysctl_args *args);
extern int compat_log;
extern int maps_protect;
extern int sysctl_stat_interval;
-extern int audit_argv_kb;
extern int latencytop_enabled;
/* Constants used for minimum and maximum */
#endif
static struct ctl_table root_table[];
-static struct ctl_table_header root_table_header =
- { root_table, LIST_HEAD_INIT(root_table_header.ctl_entry) };
+static struct ctl_table_root sysctl_table_root;
+static struct ctl_table_header root_table_header = {
+ .ctl_table = root_table,
+ .ctl_entry = LIST_HEAD_INIT(sysctl_table_root.header_list),
+ .root = &sysctl_table_root,
+};
+static struct ctl_table_root sysctl_table_root = {
+ .root_list = LIST_HEAD_INIT(sysctl_table_root.root_list),
+ .header_list = LIST_HEAD_INIT(root_table_header.ctl_entry),
+};
static struct ctl_table kern_table[];
static struct ctl_table vm_table[];
.mode = 0555,
.child = vm_table,
},
-#ifdef CONFIG_NET
- {
- .ctl_name = CTL_NET,
- .procname = "net",
- .mode = 0555,
- .child = net_table,
- },
-#endif
{
.ctl_name = CTL_FS,
.procname = "fs",
.mode = 0644,
.proc_handler = &proc_dointvec,
},
-#ifdef CONFIG_AUDITSYSCALL
- {
- .ctl_name = CTL_UNNUMBERED,
- .procname = "audit_argv_kb",
- .data = &audit_argv_kb,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
-#endif
{
.ctl_name = KERN_CORE_PATTERN,
.procname = "core_pattern",
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "io_delay_type",
+ .data = &io_delay_type,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
#endif
#if defined(CONFIG_MMU)
{
spin_unlock(&sysctl_lock);
}
-struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev)
+static struct list_head *
+lookup_header_list(struct ctl_table_root *root, struct nsproxy *namespaces)
{
+ struct list_head *header_list;
+ header_list = &root->header_list;
+ if (root->lookup)
+ header_list = root->lookup(root, namespaces);
+ return header_list;
+}
+
+struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
+ struct ctl_table_header *prev)
+{
+ struct ctl_table_root *root;
+ struct list_head *header_list;
struct ctl_table_header *head;
struct list_head *tmp;
+
spin_lock(&sysctl_lock);
if (prev) {
+ head = prev;
tmp = &prev->ctl_entry;
unuse_table(prev);
goto next;
spin_unlock(&sysctl_lock);
return head;
next:
+ root = head->root;
tmp = tmp->next;
- if (tmp == &root_table_header.ctl_entry)
- break;
+ header_list = lookup_header_list(root, namespaces);
+ if (tmp != header_list)
+ continue;
+
+ do {
+ root = list_entry(root->root_list.next,
+ struct ctl_table_root, root_list);
+ if (root == &sysctl_table_root)
+ goto out;
+ header_list = lookup_header_list(root, namespaces);
+ } while (list_empty(header_list));
+ tmp = header_list->next;
}
+out:
spin_unlock(&sysctl_lock);
return NULL;
}
+struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev)
+{
+ return __sysctl_head_next(current->nsproxy, prev);
+}
+
+void register_sysctl_root(struct ctl_table_root *root)
+{
+ spin_lock(&sysctl_lock);
+ list_add_tail(&root->root_list, &sysctl_table_root.root_list);
+ spin_unlock(&sysctl_lock);
+}
+
#ifdef CONFIG_SYSCTL_SYSCALL
int do_sysctl(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen)
{
int err;
sysctl_set_parent(NULL, root_table);
- err = sysctl_check_table(root_table);
+ err = sysctl_check_table(current->nsproxy, root_table);
return 0;
}
core_initcall(sysctl_init);
/**
- * register_sysctl_paths - register a sysctl hierarchy
+ * __register_sysctl_paths - register a sysctl hierarchy
+ * @root: List of sysctl headers to register on
+ * @namespaces: Data to compute which lists of sysctl entries are visible
* @path: The path to the directory the sysctl table is in.
* @table: the top-level table structure
*
* This routine returns %NULL on a failure to register, and a pointer
* to the table header on success.
*/
-struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
- struct ctl_table *table)
+struct ctl_table_header *__register_sysctl_paths(
+ struct ctl_table_root *root,
+ struct nsproxy *namespaces,
+ const struct ctl_path *path, struct ctl_table *table)
{
+ struct list_head *header_list;
struct ctl_table_header *header;
struct ctl_table *new, **prevp;
unsigned int n, npath;
new += 2;
}
*prevp = table;
+ header->ctl_table_arg = table;
INIT_LIST_HEAD(&header->ctl_entry);
header->used = 0;
header->unregistering = NULL;
+ header->root = root;
sysctl_set_parent(NULL, header->ctl_table);
- if (sysctl_check_table(header->ctl_table)) {
+ if (sysctl_check_table(namespaces, header->ctl_table)) {
kfree(header);
return NULL;
}
spin_lock(&sysctl_lock);
- list_add_tail(&header->ctl_entry, &root_table_header.ctl_entry);
+ header_list = lookup_header_list(root, namespaces);
+ list_add_tail(&header->ctl_entry, header_list);
spin_unlock(&sysctl_lock);
return header;
}
+/**
+ * register_sysctl_table_path - register a sysctl table hierarchy
+ * @path: The path to the directory the sysctl table is in.
+ * @table: the top-level table structure
+ *
+ * Register a sysctl table hierarchy. @table should be a filled in ctl_table
+ * array. A completely 0 filled entry terminates the table.
+ *
+ * See __register_sysctl_paths for more details.
+ */
+struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
+ struct ctl_table *table)
+{
+ return __register_sysctl_paths(&sysctl_table_root, current->nsproxy,
+ path, table);
+}
+
/**
* register_sysctl_table - register a sysctl table hierarchy
* @table: the top-level table structure
projects / linux-2.6 / blobdiff