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Diffstat (limited to 'arch/um/kernel/exec_kern.c')
-rw-r--r--arch/um/kernel/exec_kern.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
new file mode 100644
index 00000000000..49ddabe69be
--- /dev/null
+++ b/arch/um/kernel/exec_kern.c
@@ -0,0 +1,91 @@
+/*
+ * 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 "2_5compat.h"
+#include "os.h"
+#include "time_user.h"
+#include "choose-mode.h"
+#include "mode_kern.h"
+
+void flush_thread(void)
+{
+ 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);
+}
+
+extern void log_exec(char **argv, void *tty);
+
+static long execve1(char *file, char __user * __user *argv,
+ char *__user __user *env)
+{
+ long error;
+
+#ifdef CONFIG_TTY_LOG
+ log_exec(argv, current->tty);
+#endif
+ error = do_execve(file, argv, env, &current->thread.regs);
+ if (error == 0){
+ task_lock(current);
+ current->ptrace &= ~PT_DTRACE;
+ 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 *file, char __user *__user *argv,
+ char __user *__user *env)
+{
+ long error;
+ char *filename;
+
+ lock_kernel();
+ filename = getname((char __user *) file);
+ error = PTR_ERR(filename);
+ if (IS_ERR(filename)) goto out;
+ error = execve1(filename, argv, env);
+ putname(filename);
+ out:
+ unlock_kernel();
+ return(error);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only. This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */