69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/utsname.h>
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#include <linux/syscalls.h>
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#include <asm/current.h>
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#include <asm/mman.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#include "internal.h"
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long sys_fork(void)
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{
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return do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs),
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¤t->thread.regs, 0, NULL, NULL);
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}
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long sys_vfork(void)
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{
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return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
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UPT_SP(¤t->thread.regs.regs),
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¤t->thread.regs, 0, NULL, NULL);
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}
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long sys_clone(unsigned long clone_flags, unsigned long newsp,
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void __user *parent_tid, void __user *child_tid)
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{
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if (!newsp)
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newsp = UPT_SP(¤t->thread.regs.regs);
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return do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid,
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child_tid);
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}
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long old_mmap(unsigned long addr, unsigned long len,
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unsigned long prot, unsigned long flags,
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unsigned long fd, unsigned long offset)
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{
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long err = -EINVAL;
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if (offset & ~PAGE_MASK)
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goto out;
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err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
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out:
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return err;
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}
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int kernel_execve(const char *filename,
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const char *const argv[],
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const char *const envp[])
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{
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mm_segment_t fs;
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int ret;
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fs = get_fs();
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set_fs(KERNEL_DS);
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ret = um_execve(filename, (const char __user *const __user *)argv,
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(const char __user *const __user *) envp);
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set_fs(fs);
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return ret;
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}
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