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authorIngo Molnar <mingo@kernel.org>2012-04-14 13:18:27 +0200
committerIngo Molnar <mingo@kernel.org>2012-04-14 13:19:04 +0200
commit6ac1ef482d7ae0c690f1640bf6eb818ff9a2d91e (patch)
tree021cc9f6b477146fcebe6f3be4752abfa2ba18a9 /kernel/sysctl_check.c
parent682968e0c425c60f0dde37977e5beb2b12ddc4cc (diff)
parenta385ec4f11bdcf81af094c03e2444ee9b7fad2e5 (diff)
Merge branch 'perf/core' into perf/uprobes
Merge in latest upstream (and the latest perf development tree), to prepare for tooling changes, and also to pick up v3.4 MM changes that the uprobes code needs to take care of. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sysctl_check.c')
-rw-r--r--kernel/sysctl_check.c160
1 files changed, 0 insertions, 160 deletions
diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c
deleted file mode 100644
index 362da653813d..000000000000
--- a/kernel/sysctl_check.c
+++ /dev/null
@@ -1,160 +0,0 @@
-#include <linux/stat.h>
-#include <linux/sysctl.h>
-#include "../fs/xfs/xfs_sysctl.h"
-#include <linux/sunrpc/debug.h>
-#include <linux/string.h>
-#include <net/ip_vs.h>
-
-
-static int sysctl_depth(struct ctl_table *table)
-{
- struct ctl_table *tmp;
- int depth;
-
- depth = 0;
- for (tmp = table; tmp->parent; tmp = tmp->parent)
- depth++;
-
- return depth;
-}
-
-static struct ctl_table *sysctl_parent(struct ctl_table *table, int n)
-{
- int i;
-
- for (i = 0; table && i < n; i++)
- table = table->parent;
-
- return table;
-}
-
-
-static void sysctl_print_path(struct ctl_table *table)
-{
- struct ctl_table *tmp;
- int depth, i;
- depth = sysctl_depth(table);
- if (table->procname) {
- for (i = depth; i >= 0; i--) {
- tmp = sysctl_parent(table, i);
- printk("/%s", tmp->procname?tmp->procname:"");
- }
- }
- printk(" ");
-}
-
-static struct ctl_table *sysctl_check_lookup(struct nsproxy *namespaces,
- struct ctl_table *table)
-{
- struct ctl_table_header *head;
- struct ctl_table *ref, *test;
- int depth, cur_depth;
-
- depth = sysctl_depth(table);
-
- for (head = __sysctl_head_next(namespaces, NULL); head;
- head = __sysctl_head_next(namespaces, head)) {
- cur_depth = depth;
- ref = head->ctl_table;
-repeat:
- test = sysctl_parent(table, cur_depth);
- for (; ref->procname; ref++) {
- int match = 0;
- if (cur_depth && !ref->child)
- continue;
-
- if (test->procname && ref->procname &&
- (strcmp(test->procname, ref->procname) == 0))
- match++;
-
- if (match) {
- if (cur_depth != 0) {
- cur_depth--;
- ref = ref->child;
- goto repeat;
- }
- goto out;
- }
- }
- }
- ref = NULL;
-out:
- sysctl_head_finish(head);
- return ref;
-}
-
-static void set_fail(const char **fail, struct ctl_table *table, const char *str)
-{
- if (*fail) {
- printk(KERN_ERR "sysctl table check failed: ");
- sysctl_print_path(table);
- printk(" %s\n", *fail);
- dump_stack();
- }
- *fail = str;
-}
-
-static void sysctl_check_leaf(struct nsproxy *namespaces,
- struct ctl_table *table, const char **fail)
-{
- struct ctl_table *ref;
-
- ref = sysctl_check_lookup(namespaces, table);
- if (ref && (ref != table))
- set_fail(fail, table, "Sysctl already exists");
-}
-
-int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table)
-{
- int error = 0;
- for (; table->procname; table++) {
- const char *fail = NULL;
-
- if (table->parent) {
- if (!table->parent->procname)
- set_fail(&fail, table, "Parent without procname");
- }
- if (table->child) {
- if (table->data)
- set_fail(&fail, table, "Directory with data?");
- if (table->maxlen)
- set_fail(&fail, table, "Directory with maxlen?");
- if ((table->mode & (S_IRUGO|S_IXUGO)) != table->mode)
- set_fail(&fail, table, "Writable sysctl directory");
- if (table->proc_handler)
- set_fail(&fail, table, "Directory with proc_handler");
- if (table->extra1)
- set_fail(&fail, table, "Directory with extra1");
- if (table->extra2)
- set_fail(&fail, table, "Directory with extra2");
- } else {
- if ((table->proc_handler == proc_dostring) ||
- (table->proc_handler == proc_dointvec) ||
- (table->proc_handler == proc_dointvec_minmax) ||
- (table->proc_handler == proc_dointvec_jiffies) ||
- (table->proc_handler == proc_dointvec_userhz_jiffies) ||
- (table->proc_handler == proc_dointvec_ms_jiffies) ||
- (table->proc_handler == proc_doulongvec_minmax) ||
- (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {
- if (!table->data)
- set_fail(&fail, table, "No data");
- if (!table->maxlen)
- set_fail(&fail, table, "No maxlen");
- }
-#ifdef CONFIG_PROC_SYSCTL
- if (!table->proc_handler)
- set_fail(&fail, table, "No proc_handler");
-#endif
- sysctl_check_leaf(namespaces, table, &fail);
- }
- if (table->mode > 0777)
- set_fail(&fail, table, "bogus .mode");
- if (fail) {
- set_fail(&fail, table, NULL);
- error = -EINVAL;
- }
- if (table->child)
- error |= sysctl_check_table(namespaces, table->child);
- }
- return error;
-}