Astral/kernel-src/sys/syscalls/getpid.c

#include <kernel/syscalls.h>
#include <arch/cpu.h>
#include <kernel/jobctl.h>
#include <logging.h>

syscallret_t syscall_getpid(context_t *ctx) {
	syscallret_t ret = {
		.ret = current_thread()->proc->pid,
		.errno = 0
	};
	return ret;
}

syscallret_t syscall_getppid(context_t *ctx) {
	syscallret_t ret = {
		.ret = current_thread()->proc->parent ? current_thread()->proc->parent->pid : 1,
		.errno = 0
	};
	return ret;
}

syscallret_t syscall_getpgid(context_t *ctx, pid_t pid) {
	syscallret_t ret = {
		.errno = 0
	};

	if (pid != 0) {
		printf("getpgid: unsupported pid %d\n", pid);
		ret.errno = EOPNOTSUPP;
		ret.ret = -1;
		return ret;
	}

	ret.ret = jobctl_getpgid(current_thread()->proc);
	return ret;
}

syscallret_t syscall_getsid(context_t *ctx, pid_t pid) {
	syscallret_t ret = {
		.errno = 0
	};

	if (pid != 0) {
		printf("getpgid: unsupported pid %d\n", pid);
		ret.errno = EOPNOTSUPP;
		ret.ret = -1;
		return ret;
	}

	ret.ret = jobctl_getsid(current_thread()->proc);
	return ret;
}