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drgn is currently licensed as GPLv3+. Part of the long term vision for drgn is that other projects can use it as a library providing programmatic interfaces for debugger functionality. A more permissive license is better suited to this goal. We decided on LGPLv2.1+ as a good balance between software freedom and permissiveness. All contributors not employed by Meta were contacted via email and consented to the license change. The only exception was the author of commitc4fbf7e589("libdrgn: fix for compilation error"), who did not respond. That commit reverted a single line of code to one originally written by me in commit640b1c011d("libdrgn: embed DWARF index in DWARF info cache"). Signed-off-by: Omar Sandoval <osandov@osandov.com>
38 lines
801 B
C
38 lines
801 B
C
// Copyright (c) Meta Platforms, Inc. and affiliates.
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// SPDX-License-Identifier: LGPL-2.1-or-later
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/**
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* @file
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*
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* String with length.
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*/
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#ifndef DRGN_NSTRING_H
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#define DRGN_NSTRING_H
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#include <string.h>
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/** A string with a stored length. */
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struct nstring {
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/**
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* The string, which is not necessarily null-terminated and may have
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* embedded null bytes.
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*/
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const char *str;
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/** The length in bytes of the string. */
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size_t len;
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};
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/** Compare two @ref nstring keys for equality. */
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static inline bool nstring_eq(const struct nstring *a, const struct nstring *b)
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{
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/*
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* len == 0 is a special case because memcmp(NULL, NULL, 0) is
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* technically undefined.
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*/
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return (a->len == b->len &&
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(a->len == 0 || memcmp(a->str, b->str, a->len) == 0));
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}
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#endif /* DRGN_NSTRING_H */
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