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Remove superfluous bzero in getcontext/swapcontext/sendsig

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We zero the whole structure; we don't need to zero the __spare__ field again.

Remove trailing whitespace.

MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
This commit is contained in:
Eric van Gyzen 2018-11-26 20:56:05 +00:00
parent 4d5a108409
commit 607a0eb2f1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=340996
4 changed files with 4 additions and 10 deletions
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1
sys/amd64/amd64/machdep.c
View file

@ -392,7 +392,6 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
sf.sf_uc.uc_mcontext.mc_gsbase = pcb->pcb_gsbase;
bzero(sf.sf_uc.uc_mcontext.mc_spare,
sizeof(sf.sf_uc.uc_mcontext.mc_spare));
bzero(sf.sf_uc.__spare__, sizeof(sf.sf_uc.__spare__));
/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&

6
sys/amd64/ia32/ia32_signal.c
View file

@ -266,7 +266,6 @@ freebsd32_getcontext(struct thread *td, struct freebsd32_getcontext_args *uap)
PROC_LOCK(td->td_proc);
uc.uc_sigmask = td->td_sigmask;
PROC_UNLOCK(td->td_proc);
bzero(&uc.__spare__, sizeof(uc.__spare__));
ret = copyout(&uc, uap->ucp, UC_COPY_SIZE);
}
return (ret);
@ -276,7 +275,7 @@ int
freebsd32_setcontext(struct thread *td, struct freebsd32_setcontext_args *uap)
{
struct ia32_ucontext uc;
int ret;
int ret;
if (uap->ucp == NULL)
ret = EINVAL;
@ -297,7 +296,7 @@ int
freebsd32_swapcontext(struct thread *td, struct freebsd32_swapcontext_args *uap)
{
struct ia32_ucontext uc;
int ret;
int ret;
if (uap->oucp == NULL || uap->ucp == NULL)
ret = EINVAL;
@ -622,7 +621,6 @@ ia32_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
fpstate_drop(td);
sf.sf_uc.uc_mcontext.mc_fsbase = td->td_pcb->pcb_fsbase;
sf.sf_uc.uc_mcontext.mc_gsbase = td->td_pcb->pcb_gsbase;
bzero(sf.sf_uc.__spare__, sizeof(sf.sf_uc.__spare__));
/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&

1
sys/i386/i386/machdep.c
View file

@ -645,7 +645,6 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
sdp->sd_lobase;
bzero(sf.sf_uc.uc_mcontext.mc_spare2,
sizeof(sf.sf_uc.uc_mcontext.mc_spare2));
bzero(sf.sf_uc.__spare__, sizeof(sf.sf_uc.__spare__));
/* Allocate space for the signal handler context. */
if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&

6
sys/kern/kern_context.c
View file

@ -75,7 +75,6 @@ sys_getcontext(struct thread *td, struct getcontext_args *uap)
PROC_LOCK(td->td_proc);
uc.uc_sigmask = td->td_sigmask;
PROC_UNLOCK(td->td_proc);
bzero(uc.__spare__, sizeof(uc.__spare__));
ret = copyout(&uc, uap->ucp, UC_COPY_SIZE);
}
return (ret);
@ -85,7 +84,7 @@ int
sys_setcontext(struct thread *td, struct setcontext_args *uap)
{
ucontext_t uc;
int ret;
int ret;
if (uap->ucp == NULL)
ret = EINVAL;
@ -106,14 +105,13 @@ int
sys_swapcontext(struct thread *td, struct swapcontext_args *uap)
{
ucontext_t uc;
int ret;
int ret;
if (uap->oucp == NULL || uap->ucp == NULL)
ret = EINVAL;
else {
bzero(&uc, sizeof(ucontext_t));
get_mcontext(td, &uc.uc_mcontext, GET_MC_CLEAR_RET);
bzero(uc.__spare__, sizeof(uc.__spare__));
PROC_LOCK(td->td_proc);
uc.uc_sigmask = td->td_sigmask;
PROC_UNLOCK(td->td_proc);