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author | des <des@FreeBSD.org> | 2008-07-22 18:58:19 +0000 |
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committer | des <des@FreeBSD.org> | 2008-07-22 18:58:19 +0000 |
commit | 666aa9cc1660793c97ef29a6cb66dfbb894dde8f (patch) | |
tree | 209e642fbe2a816041f67bc27c9800879f5541bc /crypto/openssh/openbsd-compat/xmmap.c | |
parent | 624d93001f28e236c027516d88282351eb7bffbe (diff) | |
download | FreeBSD-src-666aa9cc1660793c97ef29a6cb66dfbb894dde8f.zip FreeBSD-src-666aa9cc1660793c97ef29a6cb66dfbb894dde8f.tar.gz |
Revert part of 180714 - the intent was to flatten dist, not to nuke it.
Diffstat (limited to 'crypto/openssh/openbsd-compat/xmmap.c')
-rw-r--r-- | crypto/openssh/openbsd-compat/xmmap.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/crypto/openssh/openbsd-compat/xmmap.c b/crypto/openssh/openbsd-compat/xmmap.c new file mode 100644 index 0000000..0fb2326 --- /dev/null +++ b/crypto/openssh/openbsd-compat/xmmap.c @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2002 Tim Rice. All rights reserved. + * MAP_FAILED code by Solar Designer. + * + * 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 AUTHOR ``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 AUTHOR 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. + */ + +/* $Id: xmmap.c,v 1.12 2006/08/24 09:58:36 dtucker Exp $ */ + +#include "includes.h" + +#include <sys/types.h> +#ifdef HAVE_SYS_MMAN_H +#include <sys/mman.h> +#endif +#include <sys/stat.h> + +#ifdef HAVE_FCNTL_H +# include <fcntl.h> +#endif +#include <errno.h> +#include <stdarg.h> +#include <string.h> +#include <unistd.h> + +#include "log.h" + +void *xmmap(size_t size) +{ +#ifdef HAVE_MMAP + void *address; + +# ifdef MAP_ANON + address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_ANON|MAP_SHARED, + -1, (off_t)0); +# else + address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_SHARED, + open("/dev/zero", O_RDWR), (off_t)0); +# endif + +#define MM_SWAP_TEMPLATE "/var/run/sshd.mm.XXXXXXXX" + if (address == (void *)MAP_FAILED) { + char tmpname[sizeof(MM_SWAP_TEMPLATE)] = MM_SWAP_TEMPLATE; + int tmpfd; + mode_t old_umask; + + old_umask = umask(0177); + tmpfd = mkstemp(tmpname); + umask(old_umask); + if (tmpfd == -1) + fatal("mkstemp(\"%s\"): %s", + MM_SWAP_TEMPLATE, strerror(errno)); + unlink(tmpname); + ftruncate(tmpfd, size); + address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_SHARED, + tmpfd, (off_t)0); + close(tmpfd); + } + + return (address); +#else + fatal("%s: UsePrivilegeSeparation=yes and Compression=yes not supported", + __func__); +#endif /* HAVE_MMAP */ + +} + |