Akinobu Mita | 6ff1cb3 | 2006-12-08 02:39:43 -0800 | [diff] [blame^] | 1 | #ifndef _LINUX_FAULT_INJECT_H |
| 2 | #define _LINUX_FAULT_INJECT_H |
| 3 | |
| 4 | #ifdef CONFIG_FAULT_INJECTION |
| 5 | |
| 6 | #include <linux/types.h> |
| 7 | #include <linux/debugfs.h> |
| 8 | #include <asm/atomic.h> |
| 9 | |
| 10 | /* |
| 11 | * For explanation of the elements of this struct, see |
| 12 | * Documentation/fault-injection/fault-injection.txt |
| 13 | */ |
| 14 | struct fault_attr { |
| 15 | unsigned long probability; |
| 16 | unsigned long interval; |
| 17 | atomic_t times; |
| 18 | atomic_t space; |
| 19 | unsigned long verbose; |
| 20 | |
| 21 | unsigned long count; |
| 22 | |
| 23 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
| 24 | |
| 25 | struct { |
| 26 | struct dentry *dir; |
| 27 | |
| 28 | struct dentry *probability_file; |
| 29 | struct dentry *interval_file; |
| 30 | struct dentry *times_file; |
| 31 | struct dentry *space_file; |
| 32 | struct dentry *verbose_file; |
| 33 | } dentries; |
| 34 | |
| 35 | #endif |
| 36 | }; |
| 37 | |
| 38 | #define FAULT_ATTR_INITIALIZER { \ |
| 39 | .interval = 1, \ |
| 40 | .times = ATOMIC_INIT(1), \ |
| 41 | } |
| 42 | |
| 43 | #define DECLARE_FAULT_ATTR(name) struct fault_attr name = FAULT_ATTR_INITIALIZER |
| 44 | int setup_fault_attr(struct fault_attr *attr, char *str); |
| 45 | void should_fail_srandom(unsigned long entropy); |
| 46 | int should_fail(struct fault_attr *attr, ssize_t size); |
| 47 | |
| 48 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
| 49 | |
| 50 | int init_fault_attr_dentries(struct fault_attr *attr, const char *name); |
| 51 | void cleanup_fault_attr_dentries(struct fault_attr *attr); |
| 52 | |
| 53 | #else /* CONFIG_FAULT_INJECTION_DEBUG_FS */ |
| 54 | |
| 55 | static inline int init_fault_attr_dentries(struct fault_attr *attr, |
| 56 | const char *name) |
| 57 | { |
| 58 | return -ENODEV; |
| 59 | } |
| 60 | |
| 61 | static inline void cleanup_fault_attr_dentries(struct fault_attr *attr) |
| 62 | { |
| 63 | } |
| 64 | |
| 65 | #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ |
| 66 | |
| 67 | #endif /* CONFIG_FAULT_INJECTION */ |
| 68 | |
| 69 | #endif /* _LINUX_FAULT_INJECT_H */ |