From: Christoph Hellwig <hch@lst.de>
Date: Tue, 9 Jun 2020 04:34:20 +0000 (-0700)
Subject: maccess: rename strnlen_unsafe_user to strnlen_user_nofault
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=02dddb160ec1dccb51e75f3113654a090bc3963a;p=linux.git

maccess: rename strnlen_unsafe_user to strnlen_user_nofault

This matches the naming of strnlen_user, and also makes it more clear
what the function is supposed to do.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20200521152301.2587579-9-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index d9ae3c69802d6..575cc308d98bf 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -315,7 +315,7 @@ long strncpy_from_kernel_nofault(char *dst, const void *unsafe_addr,
 extern long __strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count);
 long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
 		long count);
-extern long strnlen_unsafe_user(const void __user *unsafe_addr, long count);
+long strnlen_user_nofault(const void __user *unsafe_addr, long count);
 
 /**
  * probe_kernel_address(): safely attempt to read from a location
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index d600f41fda1ca..4325f9e7fadaa 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1221,7 +1221,7 @@ fetch_store_strlen_user(unsigned long addr)
 {
 	const void __user *uaddr =  (__force const void __user *)addr;
 
-	return strnlen_unsafe_user(uaddr, MAX_STRING_SIZE);
+	return strnlen_user_nofault(uaddr, MAX_STRING_SIZE);
 }
 
 /*
diff --git a/mm/maccess.c b/mm/maccess.c
index 50b27fbe5cf80..88ab30c054a97 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -260,7 +260,7 @@ long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
 }
 
 /**
- * strnlen_unsafe_user: - Get the size of a user string INCLUDING final NUL.
+ * strnlen_user_nofault: - Get the size of a user string INCLUDING final NUL.
  * @unsafe_addr: The string to measure.
  * @count: Maximum count (including NUL)
  *
@@ -275,7 +275,7 @@ long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
  * Unlike strnlen_user, this can be used from IRQ handler etc. because
  * it disables pagefaults.
  */
-long strnlen_unsafe_user(const void __user *unsafe_addr, long count)
+long strnlen_user_nofault(const void __user *unsafe_addr, long count)
 {
 	mm_segment_t old_fs = get_fs();
 	int ret;