linux-kernel - [PATCH 07/15] maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel

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Message-Id: <20200506062223.30032-8-hch@lst.de>
Date:   Wed,  6 May 2020 08:22:15 +0200
From:   Christoph Hellwig <hch@....de>
To:     x86@...nel.org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-parisc@...r.kernel.org, linux-um@...ts.infradead.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 07/15] maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_unsafe

This matches the convention of always having _unsafe as a suffix, as
well as match the naming of strncpy_from_user_unsafe.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/x86/mm/maccess.c    | 2 +-
 include/linux/uaccess.h  | 2 +-
 kernel/trace/bpf_trace.c | 2 +-
 mm/maccess.c             | 6 +++---
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/mm/maccess.c b/arch/x86/mm/maccess.c
index f5b85bdc0535c..6290e9894fb55 100644
--- a/arch/x86/mm/maccess.c
+++ b/arch/x86/mm/maccess.c
@@ -34,7 +34,7 @@ long probe_kernel_read_strict(void *dst, const void *src, size_t size)
 	return __probe_kernel_read(dst, src, size);
 }
 
-long strncpy_from_unsafe_strict(char *dst, const void *unsafe_addr, long count)
+long strncpy_from_kernel_unsafe(char *dst, const void *unsafe_addr, long count)
 {
 	if (unlikely(invalid_probe_range((unsigned long)unsafe_addr)))
 		return -EFAULT;
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 74db16fac2a04..221d703480b6e 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -310,7 +310,7 @@ extern long notrace probe_kernel_write(void *dst, const void *src, size_t size);
 extern long notrace probe_user_write(void __user *dst, const void *src, size_t size);
 
 extern long strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count);
-extern long strncpy_from_unsafe_strict(char *dst, const void *unsafe_addr,
+extern long strncpy_from_kernel_unsafe(char *dst, const void *unsafe_addr,
 				       long count);
 extern long __strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count);
 extern long strncpy_from_user_unsafe(char *dst, const void __user *unsafe_addr,
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index d3989384e515d..e4e202f433903 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -240,7 +240,7 @@ bpf_probe_read_kernel_str_common(void *dst, u32 size, const void *unsafe_ptr,
 	 * is returned that can be used for bpf_perf_event_output() et al.
 	 */
 	ret = compat ? strncpy_from_unsafe(dst, unsafe_ptr, size) :
-	      strncpy_from_unsafe_strict(dst, unsafe_ptr, size);
+	      strncpy_from_kernel_unsafe(dst, unsafe_ptr, size);
 	if (unlikely(ret < 0))
 out:
 		memset(dst, 0, size);
diff --git a/mm/maccess.c b/mm/maccess.c
index 76f9d4dd51300..683b70518a896 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -159,7 +159,7 @@ long probe_user_write(void __user *dst, const void *src, size_t size)
  * If @count is smaller than the length of the string, copies @count-1 bytes,
  * sets the last byte of @dst buffer to NUL and returns @count.
  *
- * Same as strncpy_from_unsafe_strict() except that for architectures with
+ * Same as strncpy_from_kernel_unsafe() except that for architectures with
  * not fully separated user and kernel address spaces this function also works
  * for user address tanges.
  *
@@ -170,7 +170,7 @@ long __weak strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count)
     __attribute__((alias("__strncpy_from_unsafe")));
 
 /**
- * strncpy_from_unsafe_strict: - Copy a NUL terminated string from unsafe
+ * strncpy_from_kernel_unsafe: - Copy a NUL terminated string from unsafe
  *				 address.
  * @dst:   Destination address, in kernel space.  This buffer must be at
  *         least @count bytes long.
@@ -187,7 +187,7 @@ long __weak strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count)
  * If @count is smaller than the length of the string, copies @count-1 bytes,
  * sets the last byte of @dst buffer to NUL and returns @count.
  */
-long __weak strncpy_from_unsafe_strict(char *dst, const void *unsafe_addr,
+long __weak strncpy_from_kernel_unsafe(char *dst, const void *unsafe_addr,
 				       long count)
     __attribute__((alias("__strncpy_from_unsafe")));
 
-- 
2.26.2