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maccess: rename strnlen_unsafe_user to strnlen_user_nofault

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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>
This commit is contained in:
Christoph Hellwig 2020-06-08 21:34:20 -07:00 committed by Linus Torvalds
parent c4cb164426
commit 02dddb160e
3 changed files with 4 additions and 4 deletions
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2
include/linux/uaccess.h
View File

@ -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

2
kernel/trace/trace_kprobe.c
View File

@ -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);
}
/*

4
mm/maccess.c
View File

@ -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;