+static void validate_coredump_safety(void)
+{
+ if (suid_dumpable == SUID_DUMPABLE_SAFE &&
+ core_pattern[0] != '/' && core_pattern[0] != '|') {
+ printk(KERN_WARNING "Unsafe core_pattern used with "\
+ "suid_dumpable=2. Pipe handler or fully qualified "\
+ "core dump path required.\n");
+ }
+}
+
+static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
+ if (!error)
+ validate_coredump_safety();
+ return error;
+}
+
+static int proc_dostring_coredump(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int error = proc_dostring(table, write, buffer, lenp, ppos);
+ if (!error)
+ validate_coredump_safety();
+ return error;
+}
+