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[PATCH] fault injection: process filtering for fault-injection capabilities

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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>
This commit is contained in:
Akinobu Mita 2006-12-08 02:39:47 -08:00 • committed by Linus Torvalds
commit f4f154fd92
4 changed files with 86 additions and 1 deletions
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2
include/linux/fault-inject.h
View file

@ -17,6 +17,7 @@ struct fault_attr {
atomic_t times;
atomic_t space;
unsigned long verbose;
u32 task_filter;
unsigned long count;
@ -30,6 +31,7 @@ struct fault_attr {
struct dentry *times_file;
struct dentry *space_file;
struct dentry *verbose_file;
struct dentry *task_filter_file;
} dentries;
#endif

3
include/linux/sched.h
View file

@ -1045,6 +1045,9 @@ struct task_struct {
#ifdef CONFIG_TASK_DELAY_ACCT
struct task_delay_info *delays;
#endif
#ifdef CONFIG_FAULT_INJECTION
int make_it_fail;
#endif
};
static inline pid_t process_group(struct task_struct *tsk)