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-rw-r--r--arch/um/kernel/syscall.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
new file mode 100644
index 00000000000..f958cb876ee
--- /dev/null
+++ b/arch/um/kernel/syscall.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/file.h"
+#include "linux/fs.h"
+#include "linux/mm.h"
+#include "linux/sched.h"
+#include "linux/utsname.h"
+#include "linux/syscalls.h"
+#include "asm/current.h"
+#include "asm/mman.h"
+#include "asm/uaccess.h"
+#include "asm/unistd.h"
+#include "internal.h"
+
+long sys_fork(void)
+{
+ long ret;
+
+ current->thread.forking = 1;
+ ret = do_fork(SIGCHLD, UPT_SP(&current->thread.regs.regs),
+ &current->thread.regs, 0, NULL, NULL);
+ current->thread.forking = 0;
+ return ret;
+}
+
+long sys_vfork(void)
+{
+ long ret;
+
+ current->thread.forking = 1;
+ ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
+ UPT_SP(&current->thread.regs.regs),
+ &current->thread.regs, 0, NULL, NULL);
+ current->thread.forking = 0;
+ return ret;
+}
+
+long old_mmap(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long offset)
+{
+ long err = -EINVAL;
+ if (offset & ~PAGE_MASK)
+ goto out;
+
+ err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+ out:
+ return err;
+}
+
+int kernel_execve(const char *filename,
+ const char *const argv[],
+ const char *const envp[])
+{
+ mm_segment_t fs;
+ int ret;
+
+ fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = um_execve(filename, (const char __user *const __user *)argv,
+ (const char __user *const __user *) envp);
+ set_fs(fs);
+
+ return ret;
+}