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The top-level funtion in a thread should print errors using priv_get_err(), while lower-level functions should set error messages using priv_set_err() except that error mesesages should be printed immediately, e.g., under walk_src_path().
37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-3.0-only */
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#ifndef _STRERRNO_
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#define _STRERRNO_
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#include <libgen.h> /* basename() */
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/**
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* strerrno() returns error message string corresponding to errno.
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* strerrno() is thread safe.
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*/
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const char *strerrno(void);
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/**
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* priv_set_err() sets an error message into a thread-local private
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* buffer. This error message can be accessed via priv_get_err().
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*
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* The top-level function in a thread should print errors using
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* priv_get_err(), while lower-level functions should set error
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* messages using priv_set_err().
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*/
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void priv_set_err(const char *fmt, ...);
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/**
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* priv_set_errv(), a wrapper for priv_set_err(), just adds filename,
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* line, and function name to the error message.
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*/
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#define priv_set_errv(fmt, ...) \
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priv_set_err("[%s:%d:%s] " fmt "\0", basename(__FILE__), __LINE__, __func__, \
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##__VA_ARGS__)
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/**
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* priv_get_err() gets the error message sotred in the thread-local private buffer.
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*/
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const char *priv_get_err();
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#endif /* _STRERRNO_ */
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