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615f867c14
Instead of overloading standard error codes (EINTR/EAGAIN), and defining short lists of error codes in multiple places that potentially end up overlapping & conflicting, we're now going to have one master list of error codes. Error codes are defined with an x-macro: thus we also have bch2_err_str() now. Also, error codes have a class field. Now, instead of checking for errors with ==, code should use bch2_err_matches(), which returns true if the error is equal to or a sub-error of the error class. This means we can define unique errors for every source location where an error is generated, which will help improve our error messages. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
35 lines
769 B
C
35 lines
769 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_ERRCODE_H
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#define _BCACHEFS_ERRCODE_H
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#define BCH_ERRCODES() \
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x(0, open_buckets_empty) \
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x(0, freelist_empty) \
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x(freelist_empty, no_buckets_found) \
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x(0, insufficient_devices) \
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x(0, need_snapshot_cleanup)
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enum bch_errcode {
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BCH_ERR_START = 2048,
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#define x(class, err) BCH_ERR_##err,
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BCH_ERRCODES()
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#undef x
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BCH_ERR_MAX
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};
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const char *bch2_err_str(int);
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bool __bch2_err_matches(int, int);
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static inline bool _bch2_err_matches(int err, int class)
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{
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return err && __bch2_err_matches(err, class);
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}
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#define bch2_err_matches(_err, _class) \
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({ \
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BUILD_BUG_ON(!__builtin_constant_p(_class)); \
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_bch2_err_matches(_err, _class); \
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})
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#endif /* _BCACHFES_ERRCODE_H */
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