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allow mmap() to be called before init runs

This commit is contained in:
pooka 2015-08-25 13:45:00 +00:00
parent 14880f9a49
commit 4e9c298177
1 changed files with 7 additions and 3 deletions
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10
lib/librumphijack/hijack.c
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@ -1,4 +1,4 @@
/* $NetBSD: hijack.c,v 1.117 2015/04/11 12:54:41 riastradh Exp $ */
/* $NetBSD: hijack.c,v 1.118 2015/08/25 13:45:00 pooka Exp $ */
/*-
* Copyright (c) 2011 Antti Kantee. All Rights Reserved.
@ -34,7 +34,7 @@
#include <rump/rumpuser_port.h>
#if !defined(lint)
__RCSID("$NetBSD: hijack.c,v 1.117 2015/04/11 12:54:41 riastradh Exp $");
__RCSID("$NetBSD: hijack.c,v 1.118 2015/08/25 13:45:00 pooka Exp $");
#endif
#include <sys/param.h>
@ -885,7 +885,8 @@ rcinit(void)
host_fork = dlsym(RTLD_NEXT, "fork");
host_daemon = dlsym(RTLD_NEXT, "daemon");
host_mmap = dlsym(RTLD_NEXT, "mmap");
if (host_mmap == NULL)
host_mmap = dlsym(RTLD_NEXT, "mmap");
/*
* In theory cannot print anything during lookups because
@ -2233,6 +2234,9 @@ mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
errno = ENOSYS;
return MAP_FAILED;
}
if (__predict_false(host_mmap == NULL)) {
host_mmap = dlsym(RTLD_NEXT, "mmap");
}
return host_mmap(addr, len, prot, flags, fd, offset);
}