#pragma once
/***
- This file is part of systemd.
-
Copyright 2010 Lennart Poettering
Copyright 2016 Michael Karcher
***/
+//#include <errno.h>
#include <sched.h>
#include <sys/syscall.h>
/* On s390/s390x and cris the order of the first and second arguments
* of the raw clone() system call is reversed. */
ret = (pid_t) syscall(__NR_clone, NULL, flags);
-#elif defined(__sparc__) && defined(__arch64__)
+#elif defined(__sparc__)
{
/**
- * sparc64 always returns the other process id in %o0, and
+ * sparc always returns the other process id in %o0, and
* a boolean flag whether this is the child or the parent in
* %o1. Inline assembly is needed to get the flag returned
* in %o1.
*/
- int in_child, child_pid;
+ int in_child, child_pid, error;
- asm volatile("mov %2, %%g1\n\t"
- "mov %3, %%o0\n\t"
+ asm volatile("mov %3, %%g1\n\t"
+ "mov %4, %%o0\n\t"
"mov 0 , %%o1\n\t"
+#if defined(__arch64__)
"t 0x6d\n\t"
+#else
+ "t 0x10\n\t"
+#endif
+ "addx %%g0, 0, %2\n\t"
"mov %%o1, %0\n\t"
"mov %%o0, %1" :
- "=r"(in_child), "=r"(child_pid) :
+ "=r"(in_child), "=r"(child_pid), "=r"(error) :
"i"(__NR_clone), "r"(flags) :
- "%o1", "%o0", "%g1" );
+ "%o1", "%o0", "%g1" "cc" );
- ret = in_child ? 0 : child_pid;
+ if (error) {
+ errno = child_pid;
+ ret = -1;
+ } else
+ ret = in_child ? 0 : child_pid;
}
#else
ret = (pid_t) syscall(__NR_clone, flags, NULL);