Messages in this thread Patch in this message | | | From | Petr Mladek <> | Subject | [PATCH v5 07/11] vsprintf: Factor out %pV handler as va_format() | Date | Wed, 25 Apr 2018 13:12:47 +0200 |
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Move the code from the long pointer() function. We are going to add a check for the access to the address that will make it even more complicated.
This patch does not change the existing behavior.
Signed-off-by: Petr Mladek <pmladek@suse.com> --- lib/vsprintf.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 92793060bb1f..e58436ef9f7f 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1479,6 +1479,18 @@ 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) @@ -1927,15 +1939,7 @@ 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': -- 2.13.6
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