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use 0 instead of NULL for null pointer constants

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and thereby remove otherwise-unnecessary inclusion of stddef.h
This commit is contained in:
Rich Felker 2013-12-13 02:20:07 -05:00
parent 571744447c
commit a7dbcf5c8c
7 changed files with 8 additions and 15 deletions
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3
src/signal/sighold.c
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@ -1,5 +1,4 @@
#include <signal.h>
#include <stddef.h>
int sighold(int sig)
{
@ -7,5 +6,5 @@ int sighold(int sig)
sigemptyset(&mask);
if (sigaddset(&mask, sig) < 0) return -1;
return sigprocmask(SIG_BLOCK, &mask, NULL);
return sigprocmask(SIG_BLOCK, &mask, 0);
}

3
src/signal/sigignore.c
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@ -1,5 +1,4 @@
#include <signal.h>
#include <stddef.h>
int sigignore(int sig)
{
@ -8,5 +7,5 @@ int sigignore(int sig)
sigemptyset(&sa.sa_mask);
sa.sa_handler = SIG_IGN;
sa.sa_flags = 0;
return sigaction(sig, &sa, NULL);
return sigaction(sig, &sa, 0);
}

5
src/signal/siginterrupt.c
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@ -1,13 +1,12 @@
#include <stddef.h>
#include <signal.h>
int siginterrupt(int sig, int flag)
{
struct sigaction sa;
sigaction(sig, NULL, &sa);
sigaction(sig, 0, &sa);
if (flag) sa.sa_flags &= ~SA_RESTART;
else sa.sa_flags |= SA_RESTART;
return sigaction(sig, &sa, NULL);
return sigaction(sig, &sa, 0);
}

3
src/signal/sigrelse.c
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@ -1,5 +1,4 @@
#include <signal.h>
#include <stddef.h>
int sigrelse(int sig)
{
@ -7,5 +6,5 @@ int sigrelse(int sig)
sigemptyset(&mask);
if (sigaddset(&mask, sig) < 0) return -1;
return sigprocmask(SIG_UNBLOCK, &mask, NULL);
return sigprocmask(SIG_UNBLOCK, &mask, 0);
}

3
src/signal/sigset.c
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@ -1,5 +1,4 @@
#include <signal.h>
#include <stddef.h>
void (*sigset(int sig, void (*handler)(int)))(int)
{
@ -11,7 +10,7 @@ void (*sigset(int sig, void (*handler)(int)))(int)
return SIG_ERR;
if (handler == SIG_HOLD) {
if (sigaction(sig, NULL, &sa_old) < 0)
if (sigaction(sig, 0, &sa_old) < 0)
return SIG_ERR;
if (sigprocmask(SIG_BLOCK, &mask, &mask) < 0)
return SIG_ERR;

3
src/signal/sigwait.c
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@ -1,10 +1,9 @@
#include <signal.h>
#include <stddef.h>
int sigwait(const sigset_t *restrict mask, int *restrict sig)
{
siginfo_t si;
if (sigtimedwait(mask, &si, NULL) < 0)
if (sigtimedwait(mask, &si, 0) < 0)
return -1;
*sig = si.si_signo;
return 0;

3
src/signal/sigwaitinfo.c
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@ -1,7 +1,6 @@
#include <signal.h>
#include <stddef.h>
int sigwaitinfo(const sigset_t *restrict mask, siginfo_t *restrict si)
{
return sigtimedwait(mask, si, NULL);
return sigtimedwait(mask, si, 0);
}