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/*
* No copyright is claimed. This code is in the public domain; do with
* it what you wish.
*/
#ifndef UTIL_LINUX_PIDFD_UTILS
#define UTIL_LINUX_PIDFD_UTILS
#ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
/*
* If the kernel headers are too old to provide the syscall numbers, let's
* define them ourselves. This can be helpful while cross-compiling.
*/
#ifndef __NR_pidfd_send_signal
#define __NR_pidfd_send_signal 424
#define SYS_pidfd_send_signal __NR_pidfd_send_signal
#endif
#ifndef __NR_pidfd_open
#define __NR_pidfd_open 434
#define SYS_pidfd_open __NR_pidfd_open
#endif
# if defined(SYS_pidfd_send_signal) && defined(SYS_pidfd_open)
# ifdef HAVE_SYS_PIDFD_H
# include <sys/pidfd.h>
# endif
# include <sys/types.h>
# ifndef HAVE_PIDFD_SEND_SIGNAL
# include <sys/wait.h>
static inline int pidfd_send_signal(int pidfd, int sig, siginfo_t *info,
unsigned int flags)
{
return syscall(SYS_pidfd_send_signal, pidfd, sig, info, flags);
}
# endif
# ifndef HAVE_PIDFD_OPEN
static inline int pidfd_open(pid_t pid, unsigned int flags)
{
return syscall(SYS_pidfd_open, pid, flags);
}
# endif
# define UL_HAVE_PIDFD 1
# endif /* SYS_pidfd_send_signal */
#endif /* HAVE_SYS_SYSCALL_H */
#endif /* UTIL_LINUX_PIDFD_UTILS */
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