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authorPetr Mladek <pmladek@suse.com>2019-04-17 14:53:45 +0300
committerPetr Mladek <pmladek@suse.com>2019-04-26 17:19:41 +0300
commit45c3e93d751ea50861c796da3cbfc848fa6ddf55 (patch)
treed039b472da9cbefa14ed11bbeb4d07880af832bc /lib
parentf00cc102b862be688fe090aec30e08d61a8f5e63 (diff)
downloadlinux-45c3e93d751ea50861c796da3cbfc848fa6ddf55.tar.xz
vsprintf: Factor out %pV handler as va_format()
Move the code from the long pointer() function. We are going to improve error handling that will make it more complicated. This patch does not change the existing behavior. Link: http://lkml.kernel.org/r/20190417115350.20479-6-pmladek@suse.com To: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Tobin C . Harding" <me@tobin.cc> Cc: Joe Perches <joe@perches.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: linux-kernel@vger.kernel.org Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/vsprintf.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 8ca29bc0d786..12b71a4d4613 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1520,6 +1520,17 @@ char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec,
return buf;
}
+static char *va_format(char *buf, char *end, struct va_format *va_fmt)
+{
+ va_list va;
+
+ va_copy(va, *va_fmt->va);
+ buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va);
+ va_end(va);
+
+ return buf;
+}
+
static noinline_for_stack
char *uuid_string(char *buf, char *end, const u8 *addr,
struct printf_spec spec, const char *fmt)
@@ -2046,15 +2057,7 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
case 'U':
return uuid_string(buf, end, ptr, spec, fmt);
case 'V':
- {
- va_list va;
-
- va_copy(va, *((struct va_format *)ptr)->va);
- buf += vsnprintf(buf, end > buf ? end - buf : 0,
- ((struct va_format *)ptr)->fmt, va);
- va_end(va);
- return buf;
- }
+ return va_format(buf, end, ptr);
case 'K':
return restricted_pointer(buf, end, ptr, spec);
case 'N':