diff options
| -rw-r--r-- | fs/coredump.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/fs/coredump.c b/fs/coredump.c index c10a43aae220..2b1d1f54e630 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -71,26 +71,20 @@ static int expand_corename(struct core_name *cn) static int cn_vprintf(struct core_name *cn, const char *fmt, va_list arg) { - char *cur; - int need; - int ret; - - need = vsnprintf(NULL, 0, fmt, arg); - if (likely(need < cn->size - cn->used - 1)) - goto out_printf; - - ret = expand_corename(cn); - if (ret) - goto expand_fail; + int free, need; + +again: + free = cn->size - cn->used; + need = vsnprintf(cn->corename + cn->used, free, fmt, arg); + if (need < free) { + cn->used += need; + return 0; + } -out_printf: - cur = cn->corename + cn->used; - vsnprintf(cur, need + 1, fmt, arg); - cn->used += need; - return 0; + if (!expand_corename(cn)) + goto again; -expand_fail: - return ret; + return -ENOMEM; } static int cn_printf(struct core_name *cn, const char *fmt, ...) |