diff options
Diffstat (limited to 'sys/alpha/linux/linux_machdep.c')
| -rw-r--r-- | sys/alpha/linux/linux_machdep.c | 58 |
1 files changed, 57 insertions, 1 deletions
diff --git a/sys/alpha/linux/linux_machdep.c b/sys/alpha/linux/linux_machdep.c index fc8f96f..3e51d89 100644 --- a/sys/alpha/linux/linux_machdep.c +++ b/sys/alpha/linux/linux_machdep.c @@ -33,6 +33,7 @@ #include <sys/mount.h> #include <sys/sysproto.h> #include <sys/systm.h> +#include <sys/unistd.h> #include <vm/vm.h> #include <vm/pmap.h> @@ -115,7 +116,62 @@ linux_vfork(struct proc *p, struct linux_vfork_args *args) int linux_clone(struct proc *p, struct linux_clone_args *args) { - return ENOSYS; + int error, ff = RFPROC; + struct proc *p2; + int exit_signal; + vm_offset_t start; + struct rfork_args rf_args; + +#ifdef DEBUG + if (args->flags & CLONE_PID) + printf("linux_clone(%ld): CLONE_PID not yet supported\n", + (long)p->p_pid); + uprintf("linux_clone(%ld): invoked with flags 0x%x and stack %p\n", + (long)p->p_pid, (unsigned int)args->flags, + args->stack); +#endif + + if (!args->stack) + return (EINVAL); + + exit_signal = args->flags & 0x000000ff; + if (exit_signal >= LINUX_NSIG) + return (EINVAL); + +/* if (exit_signal <= LINUX_SIGTBLSZ) + exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)]; +*/ + /* RFTHREAD probably not necessary here, but it shouldn't hurt */ + ff |= RFTHREAD; + + if (args->flags & CLONE_VM) + ff |= RFMEM; + if (args->flags & CLONE_SIGHAND) + ff |= RFSIGSHARE; + if (!(args->flags & CLONE_FILES)) + ff |= RFFDG; + + error = 0; + start = 0; + + rf_args.flags = ff; + if ((error = rfork(p, &rf_args)) != 0) + return (error); + + p2 = pfind(p->p_retval[0]); + if (p2 == 0) + return (ESRCH); + + p2->p_sigparent = exit_signal; + p2->p_addr->u_pcb.pcb_hw.apcb_usp = (unsigned long)args->stack; + +#ifdef DEBUG + uprintf ("linux_clone(%ld): successful rfork to %ld, stack %p, sig = %d\n", +(long)p->p_pid, (long)p2->p_pid, args->stack, exit_signal); +#endif + + return (0); + } #define STACK_SIZE (2 * 1024 * 1024) |
