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net/x25: fix null_x25_address handling

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[ Upstream commit 06137619f0 ]

o x25_find_listener(): the compare for the null_x25_address was wrong.
   We have to check the x25_addr of the listener socket instead of the
   x25_addr of the incomming call.

 o x25_bind(): it was not possible to bind a socket to null_x25_address

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Martin Schiller 2018-11-27 09:50:28 +01:00 committed by Greg Kroah-Hartman
parent fdda36a1dd
commit 87989217d9
1 changed files with 10 additions and 6 deletions
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16
net/x25/af_x25.c
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@ -288,7 +288,7 @@ static struct sock *x25_find_listener(struct x25_address *addr,
sk_for_each(s, &x25_list)
if ((!strcmp(addr->x25_addr,
x25_sk(s)->source_addr.x25_addr) ||
!strcmp(addr->x25_addr,
!strcmp(x25_sk(s)->source_addr.x25_addr,
null_x25_address.x25_addr)) &&
s->sk_state == TCP_LISTEN) {
/*
@ -684,11 +684,15 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
goto out;
}
len = strlen(addr->sx25_addr.x25_addr);
for (i = 0; i < len; i++) {
if (!isdigit(addr->sx25_addr.x25_addr[i])) {
rc = -EINVAL;
goto out;
/* check for the null_x25_address */
if (strcmp(addr->sx25_addr.x25_addr, null_x25_address.x25_addr)) {
len = strlen(addr->sx25_addr.x25_addr);
for (i = 0; i < len; i++) {
if (!isdigit(addr->sx25_addr.x25_addr[i])) {
rc = -EINVAL;
goto out;
}
}
}