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authorColin Watson <cjwatson@debian.org>2003-09-01 02:05:26 +0000
committerColin Watson <cjwatson@debian.org>2003-09-01 02:05:26 +0000
commit6d5a72bc1d98a42ba42f082e50a22e911c1d82d3 (patch)
tree1bf23174bdb6fc71e2846dda0eca195a418484e7 /openbsd-compat/xmmap.c
parent2ee26b431f98cf1dc0e4fb9809ad1e0c879b8c08 (diff)
parent58657d96514cd6f16d82add8d6f4adbb36765758 (diff)
Debian release 3.5p1-1.
Diffstat (limited to 'openbsd-compat/xmmap.c')
-rw-r--r--openbsd-compat/xmmap.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/openbsd-compat/xmmap.c b/openbsd-compat/xmmap.c
new file mode 100644
index 000000000..8f1d2022c
--- /dev/null
+++ b/openbsd-compat/xmmap.c
@@ -0,0 +1,67 @@
1/*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions
4 * are met:
5 * 1. Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * 2. Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 *
11 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
12 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
13 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
14 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
15 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
16 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
17 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
18 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
19 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
20 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21 */
22
23#include "includes.h"
24
25#ifdef HAVE_SYS_MMAN_H
26#include <sys/mman.h>
27#endif
28
29#include "log.h"
30
31void *xmmap(size_t size)
32{
33 void *address;
34
35#ifdef HAVE_MMAP
36# ifdef MAP_ANON
37 address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_ANON|MAP_SHARED,
38 -1, 0);
39# else
40 address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_SHARED,
41 open("/dev/zero", O_RDWR), 0);
42# endif
43
44#define MM_SWAP_TEMPLATE "/var/run/sshd.mm.XXXXXXXX"
45 if (address == MAP_FAILED) {
46 char tmpname[sizeof(MM_SWAP_TEMPLATE)] = MM_SWAP_TEMPLATE;
47 int tmpfd;
48
49 tmpfd = mkstemp(tmpname);
50 if (tmpfd == -1)
51 fatal("mkstemp(\"%s\"): %s",
52 MM_SWAP_TEMPLATE, strerror(errno));
53 unlink(tmpname);
54 ftruncate(tmpfd, size);
55 address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_SHARED,
56 tmpfd, 0);
57 close(tmpfd);
58 }
59
60 return (address);
61#else
62 fatal("%s: UsePrivilegeSeparation=yes and Compression=yes not supported",
63 __func__);
64#endif /* HAVE_MMAP */
65
66}
67