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authorOleg Nesterov <oleg@redhat.com>2013-07-03 15:08:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:08:02 -0700
commitbc03c691aa86948af4e272ebdcdd4203018210f3 (patch)
tree3f15d82e7061ead660f39c78bbdc73c862c395fa /fs/coredump.c
parente7fd1549aeb83e34ee0955cdf5dee5d4088508f3 (diff)
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coredump: introduce cn_vprintf()
Turn cn_printf(...) into cn_vprintf(va_list args), reintroduce cn_printf() as a trivial wrapper. This simplifies the next change and cn_vprintf() will have more callers. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Colin Walters <walters@verbum.org> Cc: Denys Vlasenko <vda.linux@googlemail.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Lennart Poettering <mzxreary@0pointer.de> Cc: Lucas De Marchi <lucas.de.marchi@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/coredump.c')
-rw-r--r--fs/coredump.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/fs/coredump.c b/fs/coredump.c
index 11bc368e0017..c10a43aae220 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -69,17 +69,13 @@ static int expand_corename(struct core_name *cn)
return 0;
}
-static int cn_printf(struct core_name *cn, const char *fmt, ...)
+static int cn_vprintf(struct core_name *cn, const char *fmt, va_list arg)
{
char *cur;
int need;
int ret;
- va_list arg;
- va_start(arg, fmt);
need = vsnprintf(NULL, 0, fmt, arg);
- va_end(arg);
-
if (likely(need < cn->size - cn->used - 1))
goto out_printf;
@@ -89,9 +85,7 @@ static int cn_printf(struct core_name *cn, const char *fmt, ...)
out_printf:
cur = cn->corename + cn->used;
- va_start(arg, fmt);
vsnprintf(cur, need + 1, fmt, arg);
- va_end(arg);
cn->used += need;
return 0;
@@ -99,6 +93,18 @@ expand_fail:
return ret;
}
+static int cn_printf(struct core_name *cn, const char *fmt, ...)
+{
+ va_list arg;
+ int ret;
+
+ va_start(arg, fmt);
+ ret = cn_vprintf(cn, fmt, arg);
+ va_end(arg);
+
+ return ret;
+}
+
static void cn_escape(char *str)
{
for (; *str; str++)