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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/*
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* kernel/stacktrace.c
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*
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* Stack trace management functions
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*
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* Copyright (C) 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
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*/
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <linux/kallsyms.h>
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#include <linux/stacktrace.h>
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void print_stack_trace(struct stack_trace *trace, int spaces)
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{
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int i;
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if (WARN_ON(!trace->entries))
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return;
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for (i = 0; i < trace->nr_entries; i++)
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printk("%*c%pS\n", 1 + spaces, ' ', (void *)trace->entries[i]);
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}
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EXPORT_SYMBOL_GPL(print_stack_trace);
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int snprint_stack_trace(char *buf, size_t size,
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struct stack_trace *trace, int spaces)
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{
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int i;
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int generated;
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int total = 0;
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if (WARN_ON(!trace->entries))
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return 0;
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for (i = 0; i < trace->nr_entries; i++) {
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generated = snprintf(buf, size, "%*c%pS\n", 1 + spaces, ' ',
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(void *)trace->entries[i]);
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total += generated;
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/* Assume that generated isn't a negative number */
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if (generated >= size) {
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buf += size;
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size = 0;
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} else {
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buf += generated;
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size -= generated;
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}
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}
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return total;
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}
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EXPORT_SYMBOL_GPL(snprint_stack_trace);
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/*
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* Architectures that do not implement save_stack_trace_tsk or
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* save_stack_trace_regs get this weak alias and a once-per-bootup warning
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* (whenever this facility is utilized - for example by procfs):
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*/
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__weak void
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save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
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{
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WARN_ONCE(1, KERN_INFO "save_stack_trace_tsk() not implemented yet.\n");
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}
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__weak void
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save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace)
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{
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WARN_ONCE(1, KERN_INFO "save_stack_trace_regs() not implemented yet.\n");
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}
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