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Merge pull request #16951 from yuwata/resolve-follow-ups-for-extra-dns-stub-listener

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resolve: follow-ups for extra DNS stub listener
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2020-09-05 15:55:22 +02:00
committed by GitHub
parent 5615e92efa 89f7435d0c
commit ad161cd6bb
17 changed files with 594 additions and 598 deletions
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src/basic/in-addr-util.c
-40
View File
@@ -402,46 +402,6 @@ int in_addr_prefix_to_string(int family, const union in_addr_union *u, unsigned
return 0;
}
int in_addr_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, char **ret) {
_cleanup_free_ char *x = NULL;
size_t l;
int r;
assert(u);
assert(ret);
/* Much like in_addr_to_string(), but optionally appends the zone interface index to the address, to properly
* handle IPv6 link-local addresses. */
if (family != AF_INET6)
goto fallback;
if (ifindex <= 0)
goto fallback;
r = in_addr_is_link_local(family, u);
if (r < 0)
return r;
if (r == 0)
goto fallback;
l = INET6_ADDRSTRLEN + 1 + DECIMAL_STR_MAX(ifindex) + 1;
x = new(char, l);
if (!x)
return -ENOMEM;
errno = 0;
if (!inet_ntop(family, u, x, l))
return errno_or_else(EINVAL);
sprintf(strchr(x, 0), "%%%i", ifindex);
*ret = TAKE_PTR(x);
return 0;
fallback:
return in_addr_to_string(family, u, ret);
}
int in_addr_port_ifindex_name_to_string(int family, const union in_addr_union *u, uint16_t port, int ifindex, const char *server_name, char **ret) {
_cleanup_free_ char *ip_str = NULL, *x = NULL;
int r;
src/basic/in-addr-util.h
+6 -1
View File
@@ -41,8 +41,13 @@ int in_addr_prefix_nth(int family, union in_addr_union *u, unsigned prefixlen, u
int in_addr_random_prefix(int family, union in_addr_union *u, unsigned prefixlen_fixed_part, unsigned prefixlen);
int in_addr_to_string(int family, const union in_addr_union *u, char **ret);
int in_addr_prefix_to_string(int family, const union in_addr_union *u, unsigned prefixlen, char **ret);
int in_addr_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, char **ret);
int in_addr_port_ifindex_name_to_string(int family, const union in_addr_union *u, uint16_t port, int ifindex, const char *server_name, char **ret);
static inline int in_addr_ifindex_to_string(int family, const union in_addr_union *u, int ifindex, char **ret) {
return in_addr_port_ifindex_name_to_string(family, u, 0, ifindex, NULL, ret);
}
static inline int in_addr_port_to_string(int family, const union in_addr_union *u, uint16_t port, char **ret) {
return in_addr_port_ifindex_name_to_string(family, u, port, 0, NULL, ret);
}
int in_addr_from_string(int family, const char *s, union in_addr_union *ret);
int in_addr_from_string_auto(const char *s, int *ret_family, union in_addr_union *ret);
src/basic/missing_socket.h
+4
View File
@@ -63,6 +63,10 @@ struct sockaddr_vm {
#define IP_TRANSPARENT 19
#endif
#ifndef IPV6_FREEBIND
#define IPV6_FREEBIND 78
#endif
/* linux/sockios.h */
#ifndef SIOCGSKNS
#define SIOCGSKNS 0x894C
src/basic/socket-util.h
+29
View File
@@ -205,6 +205,35 @@ struct cmsghdr* cmsg_find(struct msghdr *mh, int level, int type, socklen_t leng
strnlen(_sa->sun_path, sizeof(_sa->sun_path))+1); \
})
#define SOCKADDR_LEN(sa) \
({ \
const union sockaddr_union *__sa = &(sa); \
size_t _len; \
switch(__sa->sa.sa_family) { \
case AF_INET: \
_len = sizeof(struct sockaddr_in); \
break; \
case AF_INET6: \
_len = sizeof(struct sockaddr_in6); \
break; \
case AF_UNIX: \
_len = SOCKADDR_UN_LEN(__sa->un); \
break; \
case AF_PACKET: \
_len = SOCKADDR_LL_LEN(__sa->ll); \
break; \
case AF_NETLINK: \
_len = sizeof(struct sockaddr_nl); \
break; \
case AF_VSOCK: \
_len = sizeof(struct sockaddr_vm); \
break; \
default: \
assert_not_reached("invalid socket family"); \
} \
_len; \
})
int socket_ioctl_fd(void);
int sockaddr_un_set_path(struct sockaddr_un *ret, const char *path);