37 lines
1.4 KiB
C
Executable file
37 lines
1.4 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* C++ stream style string formatter and printer used in KUnit for outputting
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* KUnit messages.
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*
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* Copyright (C) 2019, Google LLC.
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* Author: Mike Krinkin <krinkin@google.com>
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*/
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#include <linux/types.h>
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/**
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* strerror() - returns a string representation for the given error code.
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* @errno: an error code defined in include/uapi/asm-generic/errno-base.h or
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* include/uapi/asm-generic/errno.h
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*
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* This function returns mnemonic representation of error code (for example,
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* EPERM, ENOENT, ESRCH, etc). For unsupported errors this function returns
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* NULL.
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*/
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const char *strerror_str(int errno);
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/**
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* strerror_r() - returns a string representation of the given error code.
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* Unlike strerror() it may use provided buffer to store the string, so in
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* the case of unknown error it returns a message containing an error code
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* instead of returning NULL.
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* @errno: an error code defined in include/uapi/asm-generic/errno-base.h or
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* include/uapi/asm-generic/errno.h
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* @buf: pointer to a buffer that could be used to store the string.
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* @buflen: contains the capacity of the buffer
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*
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* When function uses provided buffer and it's capacity is not enough to
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* store the whole string the string is truncated and always contains '\0'.
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* If buflen == 0, the function returns NULL pointer as there is not enough
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* space to store even '\0'.
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*/
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const char *strerror_r(int errno, char *buf, size_t buflen);
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