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authorJeff Dike <jdike@addtoit.com>2006-07-10 13:45:13 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-10 22:24:24 +0200
commit1d3468a6643a6a5905e2ac9ae1fa1aefc06d882a (patch)
tree9f605490ab72b8027e9f5e0d4c9626516d8a73c5 /arch/um/kernel/exec.c
parent[PATCH] uml: remove syscall debugging (diff)
downloadlinux-1d3468a6643a6a5905e2ac9ae1fa1aefc06d882a.tar.xz
linux-1d3468a6643a6a5905e2ac9ae1fa1aefc06d882a.zip
[PATCH] uml: move _kern.c files
Move most *_kern.c files in arch/um/kernel to *.c. This makes UML somewhat more closely resemble the other arches. [akpm@osdl.org: use the new INTF_* flags] Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/kernel/exec.c')
-rw-r--r--arch/um/kernel/exec.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
new file mode 100644
index 000000000000..fc38a6d5906d
--- /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);
+}