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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/kernel/tt/uaccess.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/um/kernel/tt/uaccess.c')
-rw-r--r--arch/um/kernel/tt/uaccess.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/um/kernel/tt/uaccess.c b/arch/um/kernel/tt/uaccess.c
new file mode 100644
index 00000000000..a72aa632972
--- /dev/null
+++ b/arch/um/kernel/tt/uaccess.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/sched.h"
+#include "asm/uaccess.h"
+
+int copy_from_user_tt(void *to, const void __user *from, int n)
+{
+ if(!access_ok_tt(VERIFY_READ, from, n))
+ return(n);
+
+ return(__do_copy_from_user(to, from, n, &current->thread.fault_addr,
+ &current->thread.fault_catcher));
+}
+
+int copy_to_user_tt(void __user *to, const void *from, int n)
+{
+ if(!access_ok_tt(VERIFY_WRITE, to, n))
+ return(n);
+
+ return(__do_copy_to_user(to, from, n, &current->thread.fault_addr,
+ &current->thread.fault_catcher));
+}
+
+int strncpy_from_user_tt(char *dst, const char __user *src, int count)
+{
+ int n;
+
+ if(!access_ok_tt(VERIFY_READ, src, 1))
+ return(-EFAULT);
+
+ n = __do_strncpy_from_user(dst, src, count,
+ &current->thread.fault_addr,
+ &current->thread.fault_catcher);
+ if(n < 0) return(-EFAULT);
+ return(n);
+}
+
+int __clear_user_tt(void __user *mem, int len)
+{
+ return(__do_clear_user(mem, len,
+ &current->thread.fault_addr,
+ &current->thread.fault_catcher));
+}
+
+int clear_user_tt(void __user *mem, int len)
+{
+ if(!access_ok_tt(VERIFY_WRITE, mem, len))
+ return(len);
+
+ return(__do_clear_user(mem, len, &current->thread.fault_addr,
+ &current->thread.fault_catcher));
+}
+
+int strnlen_user_tt(const void __user *str, int len)
+{
+ return(__do_strnlen_user(str, len,
+ &current->thread.fault_addr,
+ &current->thread.fault_catcher));
+}
+
+/*
+ * 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:
+ */