minix3/lib/libsys/sys_fork.c

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2020-02-21 00:59:27 +05:30
#include "syslib.h"
int sys_fork(parent, child, child_endpoint, flags, msgaddr)
endpoint_t parent; /* process doing the fork */
endpoint_t child; /* which proc has been created by the fork */
endpoint_t *child_endpoint;
u32_t flags;
vir_bytes *msgaddr;
{
/* A process has forked. Tell the kernel. */
message m;
int r;
m.m_lsys_krn_sys_fork.endpt = parent;
m.m_lsys_krn_sys_fork.slot = child;
m.m_lsys_krn_sys_fork.flags = flags;
r = _kernel_call(SYS_FORK, &m);
*child_endpoint = m.m_krn_lsys_sys_fork.endpt;
*msgaddr = m.m_krn_lsys_sys_fork.msgaddr;
return r;
}