seq_file: remove "%n" usage from seq_file users

All seq_printf() users are using "%n" for calculating padding size,
convert them to use seq_setwidth() / seq_pad() pair.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 8 deletions

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 89909dd730dd..de86e5bc4462 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2331,7 +2331,7 @@ EXPORT_SYMBOL(udp_proc_unregister);
 
 /* ------------------------------------------------------------------------ */
 static void udp4_format_sock(struct sock *sp, struct seq_file *f,
-                int bucket, int *len)
+                int bucket)
 {
         struct inet_sock *inet = inet_sk(sp);
         __be32 dest = inet->inet_daddr;
@@ -2340,7 +2340,7 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
         __u16 srcp        = ntohs(inet->inet_sport);
 
         seq_printf(f, "%5d: %08X:%04X %08X:%04X"
-                " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d%n",
+                " %02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d %pK %d",
                 bucket, src, srcp, dest, destp, sp->sk_state,
                 sk_wmem_alloc_get(sp),
                 sk_rmem_alloc_get(sp),
@@ -2348,23 +2348,22 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
                 from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
                 0, sock_i_ino(sp),
                 atomic_read(&sp->sk_refcnt), sp,
-                atomic_read(&sp->sk_drops), len);
+                atomic_read(&sp->sk_drops));
 }
 
 int udp4_seq_show(struct seq_file *seq, void *v)
 {
+        seq_setwidth(seq, 127);
         if (v == SEQ_START_TOKEN)
-                seq_printf(seq, "%-127s\n",
-                           "  sl  local_address rem_address   st tx_queue "
+                seq_puts(seq, "  sl  local_address rem_address   st tx_queue "
                            "rx_queue tr tm->when retrnsmt   uid  timeout "
                            "inode ref pointer drops");
         else {
                 struct udp_iter_state *state = seq->private;
-                int len;
 
-                udp4_format_sock(v, seq, state->bucket, &len);
-                seq_printf(seq, "%*s\n", 127 - len, "");
+                udp4_format_sock(v, seq, state->bucket);
         }
+        seq_pad(seq, '\n');
         return 0;
 }