This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / um / kernel / exec.c

diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
new file mode 100644 (file)
index 0000000..fc38a6d
--- /dev/null
+++ b/arch/um/kernel/exec.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/slab.h"
+#include "linux/smp_lock.h"
+#include "linux/ptrace.h"
+#include "asm/ptrace.h"
+#include "asm/pgtable.h"
+#include "asm/tlbflush.h"
+#include "asm/uaccess.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "mem_user.h"
+#include "kern.h"
+#include "irq_user.h"
+#include "tlb.h"
+#include "os.h"
+#include "choose-mode.h"
+#include "mode_kern.h"
+
+void flush_thread(void)
+{
+       arch_flush_thread(&current->thread.arch);
+       CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());
+}
+
+void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
+{
+       CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);
+}
+
+#ifdef CONFIG_TTY_LOG
+extern void log_exec(char **argv, void *tty);
+#endif
+
+static long execve1(char *file, char __user * __user *argv,
+                   char __user *__user *env)
+{
+        long error;
+
+#ifdef CONFIG_TTY_LOG
+       task_lock(current);
+       log_exec(argv, current->signal->tty);
+       task_unlock(current);
+#endif
+        error = do_execve(file, argv, env, &current->thread.regs);
+        if (error == 0){
+               task_lock(current);
+                current->ptrace &= ~PT_DTRACE;
+#ifdef SUBARCH_EXECVE1
+               SUBARCH_EXECVE1(&current->thread.regs.regs);
+#endif
+               task_unlock(current);
+                set_cmdline(current_cmd());
+        }
+        return(error);
+}
+
+long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
+{
+       long err;
+
+       err = execve1(file, argv, env);
+       if(!err)
+               do_longjmp(current->thread.exec_buf, 1);
+       return(err);
+}
+
+long sys_execve(char __user *file, char __user *__user *argv,
+               char __user *__user *env)
+{
+       long error;
+       char *filename;
+
+       lock_kernel();
+       filename = getname(file);
+       error = PTR_ERR(filename);
+       if (IS_ERR(filename)) goto out;
+       error = execve1(filename, argv, env);
+       putname(filename);
+ out:
+       unlock_kernel();
+       return(error);
+}