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731d4452c3
Ifdef out any special behavior we want so we no longer leak this via strings in the resulting binary. Ideally we want the compile to fail for anything missed rather than surprising behavior when we try to access files in the build directory. Closes: #1230 Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1396>
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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* Copyright © 2019 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <config.h>
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#pragma once
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#include <unistd.h>
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#include "util-strings.h"
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/**
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* Try to figure out the directory we're executing from and if it matches
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* the builddir true and set builddir (if not NULL) to the given builddir.
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*/
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static inline bool
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builddir_lookup(char **builddir)
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{
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#ifdef IS_DEBUG_BUILD
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char execdir[PATH_MAX];
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char *pathsep;
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ssize_t nread;
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/* In the case of release builds, the builddir is
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the empty string */
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if (streq(MESON_BUILD_ROOT, ""))
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return false;
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nread = readlink("/proc/self/exe", execdir, sizeof(execdir) - 1);
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if (nread <= 0 || nread == sizeof(execdir) - 1)
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return false;
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/* readlink doesn't terminate the string and readlink says
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anything past sz is undefined */
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execdir[nread] = '\0';
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pathsep = strrchr(execdir, '/');
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if (!pathsep)
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return false;
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*pathsep = '\0';
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if (!streq(execdir, MESON_BUILD_ROOT))
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return false;
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if (builddir)
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*builddir = safe_strdup(execdir);
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return true;
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#else
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return false;
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#endif
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}
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