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Checkpoint a hack to enable running i386 libc_r binaries on a 64 bit

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kernel.  I'm not happy with it yet - refinements are to come.
This hack allows the kern.ps_strings and kern.usrstack sysctls to respond
to a 32 bit request, such as those coming from emulated i386 binaries.
This commit is contained in:
Peter Wemm 2004-02-18 00:54:17 +00:00
parent 36e8826ffb
commit df7c361e64
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125953
1 changed files with 22 additions and 4 deletions
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26
sys/kern/kern_exec.c
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@ -102,20 +102,38 @@ static int
sysctl_kern_ps_strings(SYSCTL_HANDLER_ARGS)
{
struct proc *p;
int error;
p = curproc;
return (SYSCTL_OUT(req, &p->p_sysent->sv_psstrings,
sizeof(p->p_sysent->sv_psstrings)));
#if defined(__amd64__) || defined(__ia64__)
if (req->oldlen == sizeof(unsigned int)) {
unsigned int val;
val = (unsigned int)p->p_sysent->sv_psstrings;
error = SYSCTL_OUT(req, &val, sizeof(val));
} else
#endif
error = SYSCTL_OUT(req, &p->p_sysent->sv_psstrings,
sizeof(p->p_sysent->sv_psstrings));
return error;
}
static int
sysctl_kern_usrstack(SYSCTL_HANDLER_ARGS)
{
struct proc *p;
int error;
p = curproc;
return (SYSCTL_OUT(req, &p->p_sysent->sv_usrstack,
sizeof(p->p_sysent->sv_usrstack)));
#if defined(__amd64__) || defined(__ia64__)
if (req->oldlen == sizeof(unsigned int)) {
unsigned int val;
val = (unsigned int)p->p_sysent->sv_usrstack;
error = SYSCTL_OUT(req, &val, sizeof(val));
} else
#endif
error = SYSCTL_OUT(req, &p->p_sysent->sv_usrstack,
sizeof(p->p_sysent->sv_usrstack));
return error;
}
static int