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Eliminate two useracc(..., VM_PROT_READ) calls that immediately precede

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copyin() calls.

Submitted by:	bde
This commit is contained in:
Alan Cox 1999-11-04 07:21:41 +00:00
parent deee919e7e
commit 2bf93af129
1 changed files with 4 additions and 8 deletions
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12
sys/alpha/alpha/machdep.c
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@ -1418,11 +1418,9 @@ osigreturn(struct proc *p,
return (EINVAL);
/*
* Test and fetch the context structure.
* We grab it all at once for speed.
* Fetch the entire context structure at once for speed.
*/
if (useracc((caddr_t)scp, sizeof (*scp), VM_PROT_READ) == 0 ||
copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc))
if (copyin((caddr_t)scp, (caddr_t)&ksc, sizeof ksc))
return (EINVAL);
/*
@ -1488,11 +1486,9 @@ sigreturn(struct proc *p,
return (EINVAL);
/*
* Test and fetch the context structure.
* We grab it all at once for speed.
* Fetch the entire context structure at once for speed.
*/
if (useracc((caddr_t)ucp, sizeof(ucontext_t), VM_PROT_READ) == 0 ||
copyin((caddr_t)ucp, (caddr_t)&uc, sizeof(ucontext_t)))
if (copyin((caddr_t)ucp, (caddr_t)&uc, sizeof(ucontext_t)))
return (EINVAL);
/*