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Makefile
(846 B)
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Makefile.depend
(271 B)
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libcasper.3
(6.85 KB)
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libcasper.c
(7.66 KB)
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libcasper.h
(6.53 KB)
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libcasper_impl.c
(2.17 KB)
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libcasper_impl.h
(3.31 KB)
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libcasper_service.3
(3.53 KB)
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libcasper_service.c
(7.23 KB)
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libcasper_service.h
(2.5 KB)
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service.c
(11.16 KB)
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zygote.c
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zygote.h
(1.89 KB)
Editing: libcasper_impl.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2013 The FreeBSD Foundation * Copyright (c) 2015 Mariusz Zaborski <oshogbo@FreeBSD.org> * All rights reserved. * * This software was developed by Pawel Jakub Dawidek under sponsorship from * the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include <err.h> #include <errno.h> #include <fcntl.h> #include <paths.h> #include <stdlib.h> #include "libcasper_impl.h" bool fd_is_valid(int fd) { return (fcntl(fd, F_GETFL) != -1 || errno != EBADF); } void fd_fix_environment(int *fdp) { int nullfd, nfd; if (*fdp > STDERR_FILENO) return; nullfd = open(_PATH_DEVNULL, O_RDWR); if (nullfd == -1) errx(1, "Unable to open %s", _PATH_DEVNULL); while (*fdp <= STDERR_FILENO) { nfd = dup(*fdp); if (nfd == -1) errx(1, "Unable to secure fd"); if (dup2(nullfd, *fdp) == -1) errx(1, "Unable to secure fd"); *fdp = nfd; } close(nullfd); }
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