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 <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Colin Walters <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Lennart Poettering <[email protected]>
Cc: Lucas De Marchi <[email protected]>
Acked-by: Neil Horman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/fs/coredump.c b/fs/coredump.c
index 11bc368..c10a43a 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -69,17 +69,13 @@
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 @@
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 @@
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++)
