e7db2d3588
This driver can be loaded as an overlay on top of a real block device, and can then be used to generate block-level failures for certain transfer requests. Specifically, a rule-based system allows the user to introduce (overt and silent) data corruption and errors. It exposes itself through /dev/fbd, and a file system can be mounted on top of it. The new fbdctl(8) tool can be used to control the driver; see ``man fbdctl'' for details. It also comes with a test set, located in test/fbdtest.
20 lines
496 B
C
20 lines
496 B
C
#ifndef _FBD_RULE_H
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#define _FBD_RULE_H
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#define MAX_RULES 16
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extern int rule_ctl(int request, endpoint_t endpt, cp_grant_id_t grant);
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extern int rule_find(u64_t pos, size_t size, int flag);
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extern void rule_pre_hook(iovec_t *iov, unsigned *count, size_t *size,
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u64_t *pos);
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extern void rule_io_hook(char *buf, size_t size, u64_t pos, int flag);
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extern void rule_post_hook(size_t osize, int *result);
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#define PRE_HOOK 0x1
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#define IO_HOOK 0x2
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#define POST_HOOK 0x4
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#endif /* _FBD_RULE_H */
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