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f4f154fd92
This patch provides process filtering feature. The process filter allows failing only permitted processes by /proc/<pid>/make-it-fail Please see the example that demostrates how to inject slab allocation failures into module init/cleanup code in Documentation/fault-injection/fault-injection.txt Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
#ifndef _LINUX_FAULT_INJECT_H
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#define _LINUX_FAULT_INJECT_H
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#ifdef CONFIG_FAULT_INJECTION
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#include <linux/types.h>
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#include <linux/debugfs.h>
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#include <asm/atomic.h>
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/*
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* For explanation of the elements of this struct, see
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* Documentation/fault-injection/fault-injection.txt
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*/
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struct fault_attr {
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unsigned long probability;
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unsigned long interval;
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atomic_t times;
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atomic_t space;
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unsigned long verbose;
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u32 task_filter;
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unsigned long count;
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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struct {
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struct dentry *dir;
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struct dentry *probability_file;
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struct dentry *interval_file;
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struct dentry *times_file;
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struct dentry *space_file;
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struct dentry *verbose_file;
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struct dentry *task_filter_file;
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} dentries;
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#endif
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};
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#define FAULT_ATTR_INITIALIZER { \
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.interval = 1, \
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.times = ATOMIC_INIT(1), \
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}
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#define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER
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int setup_fault_attr(struct fault_attr *attr, char *str);
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void should_fail_srandom(unsigned long entropy);
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int should_fail(struct fault_attr *attr, ssize_t size);
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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int init_fault_attr_dentries(struct fault_attr *attr, const char *name);
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void cleanup_fault_attr_dentries(struct fault_attr *attr);
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#else /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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static inline int init_fault_attr_dentries(struct fault_attr *attr,
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const char *name)
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{
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return -ENODEV;
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}
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static inline void cleanup_fault_attr_dentries(struct fault_attr *attr)
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{
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}
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#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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#endif /* CONFIG_FAULT_INJECTION */
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#endif /* _LINUX_FAULT_INJECT_H */
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