musl/src/signal/sigqueue.c

#include <signal.h>
#include <string.h>
#include <unistd.h>
#include "syscall.h"

int sigqueue(pid_t pid, int sig, const union sigval value)
{
	siginfo_t si;
	memset(&si, 0, sizeof si);
	si.si_signo = sig;
	si.si_code = SI_QUEUE;
	si.si_value = value;
	si.si_pid = getpid();
	si.si_uid = getuid();
	return syscall(SYS_rt_sigqueueinfo, pid, sig, &si);
}
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#include <signal.h>`
			`#include <string.h>`
			`#include <unistd.h>`
			`#include "syscall.h"`

			`int sigqueue(pid_t pid, int sig, const union sigval value)`
			`{`
fix errors in sigqueue (potential information leak, wrong behavior) 1. any padding in the siginfo struct was not necessarily zero-filled, so it might have contained private data off the caller's stack. 2. the uid and pid must be filled in from userspace. the previous rsyscall fix broke rsyscalls because the values were always incorrect. 2011-03-10 18:26:29 -05:00			`siginfo_t si;`
			`memset(&si, 0, sizeof si);`
			`si.si_signo = sig;`
			`si.si_code = SI_QUEUE;`
			`si.si_value = value;`
			`si.si_pid = getpid();`
			`si.si_uid = getuid();`
global cleanup to use the new syscall interface 2011-03-20 00:16:43 -04:00			`return syscall(SYS_rt_sigqueueinfo, pid, sig, &si);`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`}`