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| author | Joe Perches <joe@perches.com> | 2011-03-22 16:34:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:12 -0700 |
| commit | 26297607e09ca6c7e6f2a6b86a8bee2f23503bb8 (patch) | |
| tree | b0fbb98f7d25c5aa18f972cbcddb1c81035e387c /lib | |
| parent | 3bb598fb23b6040e67b5e6db9a00b28cd26e5809 (diff) | |
| download | lwn-26297607e09ca6c7e6f2a6b86a8bee2f23503bb8.tar.gz lwn-26297607e09ca6c7e6f2a6b86a8bee2f23503bb8.zip | |
vsprintf: neaten %pK kptr_restrict, save a bit of code space
If kptr restrictions are on, just set the passed pointer to NULL.
$ size lib/vsprintf.o.*
text data bss dec hex filename
8247 4 2 8253 203d lib/vsprintf.o.new
8282 4 2 8288 2060 lib/vsprintf.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vsprintf.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index d3023df8477f..070d134eef71 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -1047,16 +1047,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr, if (spec.field_width == -1) spec.field_width = 2 * sizeof(void *); return string(buf, end, "pK-error", spec); - } else if ((kptr_restrict == 0) || - (kptr_restrict == 1 && - has_capability_noaudit(current, CAP_SYSLOG))) - break; - - if (spec.field_width == -1) { - spec.field_width = 2 * sizeof(void *); - spec.flags |= ZEROPAD; } - return number(buf, end, 0, spec); + if (!((kptr_restrict == 0) || + (kptr_restrict == 1 && + has_capability_noaudit(current, CAP_SYSLOG)))) + ptr = NULL; + break; } spec.flags |= SMALL; if (spec.field_width == -1) { |