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libdns: Avoid using compound literals.

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* dirmngr/dns.c (dns_inet_pton, dns_so_tcp_keep): Use automatic
variables.
(dns_poll, dns_send_nopipe): Likewise, adding const qualifier.

--

Compound literals is a feature of C99.  Because we only use C90 plus
some limited features, in the project, it's better to avoid it.

Besides, we make sure when it's read-only.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2019-02-26 09:42:54 +09:00
parent a481d17432
commit 1c40549938
1 changed files with 10 additions and 5 deletions
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15
dirmngr/dns.c
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@ -944,10 +944,11 @@ static int dns_sa_cmp(void *a, void *b) {
#if _WIN32
static int dns_inet_pton(int af, const void *src, void *dst) {
union { struct sockaddr_in sin; struct sockaddr_in6 sin6; } u;
int size_of_u = (int)sizeof u;
u.sin.sin_family = af;
if (0 != WSAStringToAddressA((void *)src, af, (void *)0, (struct sockaddr *)&u, &(int){ sizeof u }))
if (0 != WSAStringToAddressA((void *)src, af, (void *)0, (struct sockaddr *)&u, &size_of_u))
return -1;
switch (af) {
@ -1125,6 +1126,7 @@ static inline _Bool dns_isgraph(unsigned char c) {
static int dns_poll(int fd, short events, int timeout) {
fd_set rset, wset;
struct timeval tv = { timeout, 0 };
if (!events)
return 0;
@ -1141,7 +1143,7 @@ static int dns_poll(int fd, short events, int timeout) {
if (events & DNS_POLLOUT)
FD_SET(fd, &wset);
select(fd + 1, &rset, &wset, 0, (timeout >= 0)? &(struct timeval){ timeout, 0 } : NULL);
select(fd + 1, &rset, &wset, 0, (timeout >= 0)? &tv : NULL);
return 0;
} /* dns_poll() */
@ -1215,9 +1217,10 @@ static size_t dns_send_nopipe(int fd, const void *src, size_t len, int flags, dn
if (!sigismember(&pending, SIGPIPE)) {
int saved = error;
const struct timespec ts = { 0, 0 };
if (!count && error == EPIPE) {
while (-1 == sigtimedwait(&piped, NULL, &(struct timespec){ 0, 0 }) && errno == EINTR)
while (-1 == sigtimedwait(&piped, NULL, &ts) && errno == EINTR)
;;
}
@ -7111,7 +7114,8 @@ static int dns_socket(struct sockaddr *local, int type, int *error_) {
#if defined SO_NOSIGPIPE
if (type != SOCK_DGRAM) {
if (0 != setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &(int){ 1 }, sizeof (int)))
const int v = 1;
if (0 != setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &v, sizeof (int)))
goto soerr;
}
#endif
@ -7487,11 +7491,12 @@ error:
static _Bool dns_so_tcp_keep(struct dns_socket *so) {
struct sockaddr_storage remote;
socklen_t l = sizeof remote;
if (so->tcp == -1)
return 0;
if (0 != getpeername(so->tcp, (struct sockaddr *)&remote, &(socklen_t){ sizeof remote }))
if (0 != getpeername(so->tcp, (struct sockaddr *)&remote, &l))
return 0;
return 0 == dns_sa_cmp(&remote, &so->remote);