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In the case of MAP_ANON, Linux mmap ignores the fd argument completely. 

So, always pass -1 to the native syscall in that case, to avoid
errors if a Linux app doesn't specify -1 as the fd (which some do).
This commit is contained in:
fvdl 2000-09-07 22:20:45 +00:00
parent 8f8a7ca780
commit 7f5724ad4c
1 changed files with 2 additions and 2 deletions
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4
sys/compat/linux/common/linux_misc.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_misc.c,v 1.71 2000/06/29 02:40:39 mrg Exp $ */
/* $NetBSD: linux_misc.c,v 1.72 2000/09/07 22:20:45 fvdl Exp $ */
/*-
* Copyright (c) 1995, 1998, 1999 The NetBSD Foundation, Inc.
@ -412,7 +412,7 @@ linux_sys_mmap(p, v, retval)
if (SCARG(&cma,prot) & VM_PROT_WRITE) /* XXX */
SCARG(&cma,prot) |= VM_PROT_READ;
SCARG(&cma,flags) = flags;
SCARG(&cma,fd) = SCARG(uap, fd);
SCARG(&cma,fd) = flags & MAP_ANON ? -1 : SCARG(uap, fd);
SCARG(&cma,pad) = 0;
SCARG(&cma,pos) = SCARG(uap, offset);