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netlink: various cleanups and use cleanup attribute

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- adjust some coding style (space after function name).
- ensure to use g_free(), as we no longer use malloc
  but the g_malloc aliases. Nowadays, glib's malloc
  is identical to malloc from the standard library and
  so this is no issue in practice. Still it's bad
  style to mix g_malloc() with free().
- use cleanup attribute for memory handling.
This commit is contained in:
Thomas Haller 2018-02-17 16:04:43 +01:00
parent 5376aa2db7
commit ba25221236
1 changed files with 28 additions and 27 deletions
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55
src/platform/nm-netlink.c
View file

@ -422,8 +422,8 @@ nla_get_u64 (const struct nlattr *nla)
{ {
uint64_t tmp = 0; uint64_t tmp = 0;
if (nla && nla_len(nla) >= sizeof(tmp)) if (nla && nla_len(nla) >= sizeof (tmp))
memcpy(&tmp, nla_data(nla), sizeof(tmp)); memcpy(&tmp, nla_data(nla), sizeof (tmp));
return tmp; return tmp;
} }
@ -562,10 +562,10 @@ nla_nest_end (struct nl_msg *msg, struct nlattr *start)
} }
static const uint16_t nla_attr_minlen[NLA_TYPE_MAX+1] = { static const uint16_t nla_attr_minlen[NLA_TYPE_MAX+1] = {
[NLA_U8] = sizeof(uint8_t), [NLA_U8] = sizeof (uint8_t),
[NLA_U16] = sizeof(uint16_t), [NLA_U16] = sizeof (uint16_t),
[NLA_U32] = sizeof(uint32_t), [NLA_U32] = sizeof (uint32_t),
[NLA_U64] = sizeof(uint64_t), [NLA_U64] = sizeof (uint64_t),
[NLA_STRING] = 1, [NLA_STRING] = 1,
[NLA_FLAG] = 0, [NLA_FLAG] = 0,
}; };
@ -613,7 +613,7 @@ nla_parse (struct nlattr *tb[], int maxtype, struct nlattr *head, int len,
struct nlattr *nla; struct nlattr *nla;
int rem, err; int rem, err;
memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1)); memset(tb, 0, sizeof (struct nlattr *) * (maxtype + 1));
nla_for_each_attr(nla, head, len, rem) { nla_for_each_attr(nla, head, len, rem) {
int type = nla_type(nla); int type = nla_type(nla);
@ -668,7 +668,7 @@ nlmsg_set_proto (struct nl_msg *msg, int protocol)
void void
nlmsg_set_src (struct nl_msg *msg, struct sockaddr_nl *addr) nlmsg_set_src (struct nl_msg *msg, struct sockaddr_nl *addr)
{ {
memcpy (&msg->nm_src, addr, sizeof(*addr)); memcpy (&msg->nm_src, addr, sizeof (*addr));
} }
struct ucred * struct ucred *
@ -682,7 +682,7 @@ nlmsg_get_creds (struct nl_msg *msg)
void void
nlmsg_set_creds (struct nl_msg *msg, struct ucred *creds) nlmsg_set_creds (struct nl_msg *msg, struct ucred *creds)
{ {
memcpy (&msg->nm_creds, creds, sizeof(*creds)); memcpy (&msg->nm_creds, creds, sizeof (*creds));
msg->nm_flags |= NL_MSG_CRED_PRESENT; msg->nm_flags |= NL_MSG_CRED_PRESENT;
} }
@ -836,7 +836,7 @@ nl_socket_set_passcred (struct nl_sock *sk, int state)
return -NLE_BAD_SOCK; return -NLE_BAD_SOCK;
err = setsockopt (sk->s_fd, SOL_SOCKET, SO_PASSCRED, err = setsockopt (sk->s_fd, SOL_SOCKET, SO_PASSCRED,
&state, sizeof(state)); &state, sizeof (state));
if (err < 0) if (err < 0)
return -nl_syserr2nlerr (errno); return -nl_syserr2nlerr (errno);
@ -889,13 +889,13 @@ nl_socket_set_buffer_size (struct nl_sock *sk, int rxbuf, int txbuf)
return -NLE_BAD_SOCK; return -NLE_BAD_SOCK;
err = setsockopt (sk->s_fd, SOL_SOCKET, SO_SNDBUF, err = setsockopt (sk->s_fd, SOL_SOCKET, SO_SNDBUF,
&txbuf, sizeof(txbuf)); &txbuf, sizeof (txbuf));
if (err < 0) { if (err < 0) {
return -nl_syserr2nlerr (errno); return -nl_syserr2nlerr (errno);
} }
err = setsockopt (sk->s_fd, SOL_SOCKET, SO_RCVBUF, err = setsockopt (sk->s_fd, SOL_SOCKET, SO_RCVBUF,
&rxbuf, sizeof(rxbuf)); &rxbuf, sizeof (rxbuf));
if (err < 0) { if (err < 0) {
return -nl_syserr2nlerr (errno); return -nl_syserr2nlerr (errno);
} }
@ -921,7 +921,7 @@ nl_socket_add_memberships (struct nl_sock *sk, int group, ...)
} }
err = setsockopt (sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, err = setsockopt (sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP,
&group, sizeof(group)); &group, sizeof (group));
if (err < 0) { if (err < 0) {
va_end(ap); va_end(ap);
return -nl_syserr2nlerr (errno); return -nl_syserr2nlerr (errno);
@ -964,13 +964,13 @@ nl_connect (struct nl_sock *sk, int protocol)
nm_assert (sk->s_local.nl_pid == 0); nm_assert (sk->s_local.nl_pid == 0);
err = bind (sk->s_fd, (struct sockaddr*) &sk->s_local, err = bind (sk->s_fd, (struct sockaddr*) &sk->s_local,
sizeof(sk->s_local)); sizeof (sk->s_local));
if (err != 0) { if (err != 0) {
err = -nl_syserr2nlerr (errno); err = -nl_syserr2nlerr (errno);
goto errout; goto errout;
} }
addrlen = sizeof(local); addrlen = sizeof (local);
err = getsockname (sk->s_fd, (struct sockaddr *) &local, err = getsockname (sk->s_fd, (struct sockaddr *) &local,
&addrlen); &addrlen);
if (err < 0) { if (err < 0) {
@ -978,7 +978,7 @@ nl_connect (struct nl_sock *sk, int protocol)
goto errout; goto errout;
} }
if (addrlen != sizeof(local)) { if (addrlen != sizeof (local)) {
err = -NLE_UNSPEC; err = -NLE_UNSPEC;
goto errout; goto errout;
} }
@ -1134,7 +1134,7 @@ continue_reading:
else if (hdr->nlmsg_type == NLMSG_ERROR) { else if (hdr->nlmsg_type == NLMSG_ERROR) {
struct nlmsgerr *e = nlmsg_data(hdr); struct nlmsgerr *e = nlmsg_data(hdr);
if (hdr->nlmsg_len < nlmsg_size(sizeof(*e))) { if (hdr->nlmsg_len < nlmsg_size(sizeof (*e))) {
/* Truncated error message, the default action /* Truncated error message, the default action
* is to stop parsing. The user may overrule * is to stop parsing. The user may overrule
* this action by returning NL_SKIP or * this action by returning NL_SKIP or
@ -1214,11 +1214,11 @@ nl_send_iovec (struct nl_sock *sk, struct nl_msg *msg, struct iovec *iov, unsign
struct ucred *creds; struct ucred *creds;
struct msghdr hdr = { struct msghdr hdr = {
.msg_name = (void *) &sk->s_peer, .msg_name = (void *) &sk->s_peer,
.msg_namelen = sizeof(struct sockaddr_nl), .msg_namelen = sizeof (struct sockaddr_nl),
.msg_iov = iov, .msg_iov = iov,
.msg_iovlen = iovlen, .msg_iovlen = iovlen,
}; };
char buf[CMSG_SPACE(sizeof(struct ucred))]; char buf[CMSG_SPACE(sizeof (struct ucred))];
/* Overwrite destination if specified in the message itself, defaults /* Overwrite destination if specified in the message itself, defaults
* to the peer address of the socket. * to the peer address of the socket.
@ -1233,13 +1233,13 @@ nl_send_iovec (struct nl_sock *sk, struct nl_msg *msg, struct iovec *iov, unsign
struct cmsghdr *cmsg; struct cmsghdr *cmsg;
hdr.msg_control = buf; hdr.msg_control = buf;
hdr.msg_controllen = sizeof(buf); hdr.msg_controllen = sizeof (buf);
cmsg = CMSG_FIRSTHDR(&hdr); cmsg = CMSG_FIRSTHDR(&hdr);
cmsg->cmsg_level = SOL_SOCKET; cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_CREDENTIALS; cmsg->cmsg_type = SCM_CREDENTIALS;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred)); cmsg->cmsg_len = CMSG_LEN(sizeof (struct ucred));
memcpy(CMSG_DATA(cmsg), creds, sizeof(struct ucred)); memcpy(CMSG_DATA(cmsg), creds, sizeof (struct ucred));
} }
return nl_sendmsg(sk, msg, &hdr); return nl_sendmsg(sk, msg, &hdr);
@ -1294,7 +1294,7 @@ nl_recv (struct nl_sock *sk, struct sockaddr_nl *nla,
struct iovec iov; struct iovec iov;
struct msghdr msg = { struct msghdr msg = {
.msg_name = (void *) nla, .msg_name = (void *) nla,
.msg_namelen = sizeof(struct sockaddr_nl), .msg_namelen = sizeof (struct sockaddr_nl),
.msg_iov = &iov, .msg_iov = &iov,
.msg_iovlen = 1, .msg_iovlen = 1,
}; };
@ -1316,8 +1316,9 @@ nl_recv (struct nl_sock *sk, struct sockaddr_nl *nla,
iov.iov_len = sk->s_bufsize ? : page_size; iov.iov_len = sk->s_bufsize ? : page_size;
iov.iov_base = g_malloc (iov.iov_len); iov.iov_base = g_malloc (iov.iov_len);
if (creds && (sk->s_flags & NL_SOCK_PASSCRED)) { if ( creds
msg.msg_controllen = CMSG_SPACE (sizeof(struct ucred)); && (sk->s_flags & NL_SOCK_PASSCRED)) {
msg.msg_controllen = CMSG_SPACE (sizeof (struct ucred));
msg.msg_control = g_malloc (msg.msg_controllen); msg.msg_control = g_malloc (msg.msg_controllen);
} }
@ -1368,7 +1369,7 @@ retry:
goto retry; goto retry;
} }
if (msg.msg_namelen != sizeof(struct sockaddr_nl)) { if (msg.msg_namelen != sizeof (struct sockaddr_nl)) {
retval = -NLE_UNSPEC; retval = -NLE_UNSPEC;
goto abort; goto abort;
} }
@ -1381,7 +1382,7 @@ retry:
continue; continue;
if (cmsg->cmsg_type != SCM_CREDENTIALS) if (cmsg->cmsg_type != SCM_CREDENTIALS)
continue; continue;
tmpcreds = g_memdup (CMSG_DATA(cmsg), sizeof(*tmpcreds)); tmpcreds = g_memdup (CMSG_DATA(cmsg), sizeof (*tmpcreds));
break; break;
} }
} }