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-rw-r--r--CODING_STYLE7
-rw-r--r--coccinelle/htonl.cocci20
-rw-r--r--src/basic/socket-util.c22
-rw-r--r--src/core/socket.c16
-rw-r--r--src/libsystemd-network/arp-util.c10
-rw-r--r--src/libsystemd-network/dhcp-network.c4
-rw-r--r--src/libsystemd-network/lldp-network.c3
-rw-r--r--src/libsystemd-network/sd-dhcp-server.c2
-rw-r--r--src/libsystemd/sd-daemon/sd-daemon.c4
-rw-r--r--src/libudev/libudev-monitor.c14
-rw-r--r--src/network/networkd-ipv4ll.c2
-rw-r--r--src/network/networkd-netdev-tunnel.c4
-rw-r--r--src/nss-myhostname/nss-myhostname.c10
-rw-r--r--src/test/test-nss.c4
-rw-r--r--src/test/test-socket-util.c8
15 files changed, 78 insertions, 52 deletions
diff --git a/CODING_STYLE b/CODING_STYLE
index e762d42edb..f31d76f8ce 100644
--- a/CODING_STYLE
+++ b/CODING_STYLE
@@ -399,3 +399,10 @@
least initially), but it needs to be there. This is particularly important
for objects that unprivileged users may allocate, but also matters for
everything else any user may allocated.
+
+- htonl()/ntohl() and htons()/ntohs() are weird. Please use htobe32() and
+ htobe16() instead, it's much more descriptive, and actually says what really
+ is happening, after all htonl() and htons() don't operation on longs and
+ shorts as their name would suggest, but on uint32_t and uint16_t. Also,
+ "network byte order" is just a weird name for "big endian", hence we might
+ want to call it "big endian" right-away.
diff --git a/coccinelle/htonl.cocci b/coccinelle/htonl.cocci
new file mode 100644
index 0000000000..4e69bb7090
--- /dev/null
+++ b/coccinelle/htonl.cocci
@@ -0,0 +1,20 @@
+@@
+expression s;
+@@
+- htonl(s)
++ htobe32(s)
+@@
+expression s;
+@@
+- htons(s)
++ htobe16(s)
+@@
+expression s;
+@@
+- ntohl(s)
++ be32toh(s)
+@@
+expression s;
+@@
+- ntohs(s)
++ be16toh(s)
diff --git a/src/basic/socket-util.c b/src/basic/socket-util.c
index c8769a54f4..2aa4daca49 100644
--- a/src/basic/socket-util.c
+++ b/src/basic/socket-util.c
@@ -85,7 +85,7 @@ int socket_address_parse(SocketAddress *a, const char *s) {
return -EINVAL;
a->sockaddr.in6.sin6_family = AF_INET6;
- a->sockaddr.in6.sin6_port = htons((uint16_t) u);
+ a->sockaddr.in6.sin6_port = htobe16((uint16_t)u);
a->size = sizeof(struct sockaddr_in6);
} else if (*s == '/') {
@@ -133,7 +133,7 @@ int socket_address_parse(SocketAddress *a, const char *s) {
if (r > 0) {
/* Gotcha, it's a traditional IPv4 address */
a->sockaddr.in.sin_family = AF_INET;
- a->sockaddr.in.sin_port = htons((uint16_t) u);
+ a->sockaddr.in.sin_port = htobe16((uint16_t)u);
a->size = sizeof(struct sockaddr_in);
} else {
unsigned idx;
@@ -147,7 +147,7 @@ int socket_address_parse(SocketAddress *a, const char *s) {
return -EINVAL;
a->sockaddr.in6.sin6_family = AF_INET6;
- a->sockaddr.in6.sin6_port = htons((uint16_t) u);
+ a->sockaddr.in6.sin6_port = htobe16((uint16_t)u);
a->sockaddr.in6.sin6_scope_id = idx;
a->sockaddr.in6.sin6_addr = in6addr_any;
a->size = sizeof(struct sockaddr_in6);
@@ -164,12 +164,12 @@ int socket_address_parse(SocketAddress *a, const char *s) {
if (socket_ipv6_is_supported()) {
a->sockaddr.in6.sin6_family = AF_INET6;
- a->sockaddr.in6.sin6_port = htons((uint16_t) u);
+ a->sockaddr.in6.sin6_port = htobe16((uint16_t)u);
a->sockaddr.in6.sin6_addr = in6addr_any;
a->size = sizeof(struct sockaddr_in6);
} else {
a->sockaddr.in.sin_family = AF_INET;
- a->sockaddr.in.sin_port = htons((uint16_t) u);
+ a->sockaddr.in.sin_port = htobe16((uint16_t)u);
a->sockaddr.in.sin_addr.s_addr = INADDR_ANY;
a->size = sizeof(struct sockaddr_in);
}
@@ -488,9 +488,7 @@ int sockaddr_port(const struct sockaddr *_sa) {
if (!IN_SET(sa->sa.sa_family, AF_INET, AF_INET6))
return -EAFNOSUPPORT;
- return ntohs(sa->sa.sa_family == AF_INET6 ?
- sa->in6.sin6_port :
- sa->in.sin_port);
+ return be16toh(sa->sa.sa_family == AF_INET6 ? sa->in6.sin6_port : sa->in.sin_port);
}
int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, bool include_port, char **ret) {
@@ -506,13 +504,13 @@ int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_
case AF_INET: {
uint32_t a;
- a = ntohl(sa->in.sin_addr.s_addr);
+ a = be32toh(sa->in.sin_addr.s_addr);
if (include_port)
r = asprintf(&p,
"%u.%u.%u.%u:%u",
a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
- ntohs(sa->in.sin_port));
+ be16toh(sa->in.sin_port));
else
r = asprintf(&p,
"%u.%u.%u.%u",
@@ -534,7 +532,7 @@ int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_
r = asprintf(&p,
"%u.%u.%u.%u:%u",
a[0], a[1], a[2], a[3],
- ntohs(sa->in6.sin6_port));
+ be16toh(sa->in6.sin6_port));
else
r = asprintf(&p,
"%u.%u.%u.%u",
@@ -550,7 +548,7 @@ int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_
r = asprintf(&p,
"[%s]:%u",
a,
- ntohs(sa->in6.sin6_port));
+ be16toh(sa->in6.sin6_port));
if (r < 0)
return -ENOMEM;
} else {
diff --git a/src/core/socket.c b/src/core/socket.c
index f6204d04bf..e098055885 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -730,16 +730,16 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) {
case AF_INET: {
uint32_t
- a = ntohl(local.in.sin_addr.s_addr),
- b = ntohl(remote.in.sin_addr.s_addr);
+ a = be32toh(local.in.sin_addr.s_addr),
+ b = be32toh(remote.in.sin_addr.s_addr);
if (asprintf(&r,
"%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
nr,
a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
- ntohs(local.in.sin_port),
+ be16toh(local.in.sin_port),
b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
- ntohs(remote.in.sin_port)) < 0)
+ be16toh(remote.in.sin_port)) < 0)
return -ENOMEM;
break;
@@ -760,9 +760,9 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) {
"%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
nr,
a[0], a[1], a[2], a[3],
- ntohs(local.in6.sin6_port),
+ be16toh(local.in6.sin6_port),
b[0], b[1], b[2], b[3],
- ntohs(remote.in6.sin6_port)) < 0)
+ be16toh(remote.in6.sin6_port)) < 0)
return -ENOMEM;
} else {
char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
@@ -771,9 +771,9 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) {
"%u-%s:%u-%s:%u",
nr,
inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
- ntohs(local.in6.sin6_port),
+ be16toh(local.in6.sin6_port),
inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
- ntohs(remote.in6.sin6_port)) < 0)
+ be16toh(remote.in6.sin6_port)) < 0)
return -ENOMEM;
}
diff --git a/src/libsystemd-network/arp-util.c b/src/libsystemd-network/arp-util.c
index 4660c7ea09..02028bf28a 100644
--- a/src/libsystemd-network/arp-util.c
+++ b/src/libsystemd-network/arp-util.c
@@ -79,7 +79,7 @@ int arp_network_bind_raw_socket(int ifindex, be32_t address, const struct ether_
};
union sockaddr_union link = {
.ll.sll_family = AF_PACKET,
- .ll.sll_protocol = htons(ETH_P_ARP),
+ .ll.sll_protocol = htobe16(ETH_P_ARP),
.ll.sll_ifindex = ifindex,
.ll.sll_halen = ETH_ALEN,
.ll.sll_addr = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
@@ -112,17 +112,17 @@ static int arp_send_packet(int fd, int ifindex,
bool announce) {
union sockaddr_union link = {
.ll.sll_family = AF_PACKET,
- .ll.sll_protocol = htons(ETH_P_ARP),
+ .ll.sll_protocol = htobe16(ETH_P_ARP),
.ll.sll_ifindex = ifindex,
.ll.sll_halen = ETH_ALEN,
.ll.sll_addr = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
};
struct ether_arp arp = {
- .ea_hdr.ar_hrd = htons(ARPHRD_ETHER), /* HTYPE */
- .ea_hdr.ar_pro = htons(ETHERTYPE_IP), /* PTYPE */
+ .ea_hdr.ar_hrd = htobe16(ARPHRD_ETHER), /* HTYPE */
+ .ea_hdr.ar_pro = htobe16(ETHERTYPE_IP), /* PTYPE */
.ea_hdr.ar_hln = ETH_ALEN, /* HLEN */
.ea_hdr.ar_pln = sizeof(be32_t), /* PLEN */
- .ea_hdr.ar_op = htons(ARPOP_REQUEST), /* REQUEST */
+ .ea_hdr.ar_op = htobe16(ARPOP_REQUEST), /* REQUEST */
};
int r;
diff --git a/src/libsystemd-network/dhcp-network.c b/src/libsystemd-network/dhcp-network.c
index fac25e0fa2..a9f5a0a5de 100644
--- a/src/libsystemd-network/dhcp-network.c
+++ b/src/libsystemd-network/dhcp-network.c
@@ -107,9 +107,9 @@ static int _bind_raw_socket(int ifindex, union sockaddr_union *link,
return -errno;
link->ll.sll_family = AF_PACKET;
- link->ll.sll_protocol = htons(ETH_P_IP);
+ link->ll.sll_protocol = htobe16(ETH_P_IP);
link->ll.sll_ifindex = ifindex;
- link->ll.sll_hatype = htons(arp_type);
+ link->ll.sll_hatype = htobe16(arp_type);
link->ll.sll_halen = mac_addr_len;
memcpy(link->ll.sll_addr, bcast_addr, mac_addr_len);
diff --git a/src/libsystemd-network/lldp-network.c b/src/libsystemd-network/lldp-network.c
index f031760351..59c25598e9 100644
--- a/src/libsystemd-network/lldp-network.c
+++ b/src/libsystemd-network/lldp-network.c
@@ -57,7 +57,8 @@ int lldp_network_bind_raw_socket(int ifindex) {
assert(ifindex > 0);
- fd = socket(PF_PACKET, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, htons(ETHERTYPE_LLDP));
+ fd = socket(PF_PACKET, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK,
+ htobe16(ETHERTYPE_LLDP));
if (fd < 0)
return -errno;
diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c
index ea4f03df1d..11ee2e252e 100644
--- a/src/libsystemd-network/sd-dhcp-server.c
+++ b/src/libsystemd-network/sd-dhcp-server.c
@@ -260,7 +260,7 @@ static int dhcp_server_send_unicast_raw(sd_dhcp_server *server,
DHCPPacket *packet, size_t len) {
union sockaddr_union link = {
.ll.sll_family = AF_PACKET,
- .ll.sll_protocol = htons(ETH_P_IP),
+ .ll.sll_protocol = htobe16(ETH_P_IP),
.ll.sll_ifindex = server->ifindex,
.ll.sll_halen = ETH_ALEN,
};
diff --git a/src/libsystemd/sd-daemon/sd-daemon.c b/src/libsystemd/sd-daemon/sd-daemon.c
index 4da9dbfd63..b20a7ebb4c 100644
--- a/src/libsystemd/sd-daemon/sd-daemon.c
+++ b/src/libsystemd/sd-daemon/sd-daemon.c
@@ -310,12 +310,12 @@ _public_ int sd_is_socket_inet(int fd, int family, int type, int listening, uint
if (l < sizeof(struct sockaddr_in))
return -EINVAL;
- return htons(port) == sockaddr.in.sin_port;
+ return htobe16(port) == sockaddr.in.sin_port;
} else {
if (l < sizeof(struct sockaddr_in6))
return -EINVAL;
- return htons(port) == sockaddr.in6.sin6_port;
+ return htobe16(port) == sockaddr.in6.sin6_port;
}
}
diff --git a/src/libudev/libudev-monitor.c b/src/libudev/libudev-monitor.c
index f870eba9eb..1f9d16c450 100644
--- a/src/libudev/libudev-monitor.c
+++ b/src/libudev/libudev-monitor.c
@@ -650,9 +650,9 @@ retry:
if (memcmp(buf.raw, "libudev", 8) == 0) {
/* udev message needs proper version magic */
- if (buf.nlh.magic != htonl(UDEV_MONITOR_MAGIC)) {
+ if (buf.nlh.magic != htobe32(UDEV_MONITOR_MAGIC)) {
log_debug("unrecognized message signature (%x != %x)",
- buf.nlh.magic, htonl(UDEV_MONITOR_MAGIC));
+ buf.nlh.magic, htobe32(UDEV_MONITOR_MAGIC));
return NULL;
}
if (buf.nlh.properties_off+32 > (size_t)buflen) {
@@ -715,7 +715,7 @@ int udev_monitor_send_device(struct udev_monitor *udev_monitor,
ssize_t blen, count;
struct udev_monitor_netlink_header nlh = {
.prefix = "libudev",
- .magic = htonl(UDEV_MONITOR_MAGIC),
+ .magic = htobe32(UDEV_MONITOR_MAGIC),
.header_size = sizeof nlh,
};
struct iovec iov[2] = {
@@ -736,19 +736,19 @@ int udev_monitor_send_device(struct udev_monitor *udev_monitor,
/* fill in versioned header */
val = udev_device_get_subsystem(udev_device);
- nlh.filter_subsystem_hash = htonl(util_string_hash32(val));
+ nlh.filter_subsystem_hash = htobe32(util_string_hash32(val));
val = udev_device_get_devtype(udev_device);
if (val != NULL)
- nlh.filter_devtype_hash = htonl(util_string_hash32(val));
+ nlh.filter_devtype_hash = htobe32(util_string_hash32(val));
/* add tag bloom filter */
tag_bloom_bits = 0;
udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device))
tag_bloom_bits |= util_string_bloom64(udev_list_entry_get_name(list_entry));
if (tag_bloom_bits > 0) {
- nlh.filter_tag_bloom_hi = htonl(tag_bloom_bits >> 32);
- nlh.filter_tag_bloom_lo = htonl(tag_bloom_bits & 0xffffffff);
+ nlh.filter_tag_bloom_hi = htobe32(tag_bloom_bits >> 32);
+ nlh.filter_tag_bloom_lo = htobe32(tag_bloom_bits & 0xffffffff);
}
/* add properties list */
diff --git a/src/network/networkd-ipv4ll.c b/src/network/networkd-ipv4ll.c
index 735c231a4c..2d81311e81 100644
--- a/src/network/networkd-ipv4ll.c
+++ b/src/network/networkd-ipv4ll.c
@@ -138,7 +138,7 @@ static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
ll_addr->family = AF_INET;
ll_addr->in_addr.in = address;
ll_addr->prefixlen = 16;
- ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
+ ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htobe32(0xfffffffflu >> ll_addr->prefixlen);
ll_addr->scope = RT_SCOPE_LINK;
r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
diff --git a/src/network/networkd-netdev-tunnel.c b/src/network/networkd-netdev-tunnel.c
index 58dec36c9a..77a4734df8 100644
--- a/src/network/networkd-netdev-tunnel.c
+++ b/src/network/networkd-netdev-tunnel.c
@@ -35,7 +35,7 @@
#include "util.h"
#define DEFAULT_TNL_HOP_LIMIT 64
-#define IP6_FLOWINFO_FLOWLABEL htonl(0x000FFFFF)
+#define IP6_FLOWINFO_FLOWLABEL htobe32(0x000FFFFF)
static const char* const ip6tnl_mode_table[_NETDEV_IP6_TNL_MODE_MAX] = {
[NETDEV_IP6_TNL_MODE_IP6IP6] = "ip6ip6",
@@ -519,7 +519,7 @@ int config_parse_ipv6_flowlabel(const char* unit,
if (k > 0xFFFFF)
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IPv6 flowlabel option, ignoring: %s", rvalue);
else {
- *ipv6_flowlabel = htonl(k) & IP6_FLOWINFO_FLOWLABEL;
+ *ipv6_flowlabel = htobe32(k) & IP6_FLOWINFO_FLOWLABEL;
t->flags &= ~IP6_TNL_F_USE_ORIG_FLOWLABEL;
}
}
diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c
index 2b83d127b7..9a6e157e12 100644
--- a/src/nss-myhostname/nss-myhostname.c
+++ b/src/nss-myhostname/nss-myhostname.c
@@ -38,7 +38,7 @@
* IPv6 we use ::1 which unfortunately will not translate back to the
* hostname but instead something like "localhost" or so. */
-#define LOCALADDRESS_IPV4 (htonl(0x7F000002))
+#define LOCALADDRESS_IPV4 (htobe32(0x7F000002))
#define LOCALADDRESS_IPV6 &in6addr_loopback
NSS_GETHOSTBYNAME_PROTOTYPES(myhostname);
@@ -75,7 +75,7 @@ enum nss_status _nss_myhostname_gethostbyname4_r(
* is optional */
canonical = "localhost";
- local_address_ipv4 = htonl(INADDR_LOOPBACK);
+ local_address_ipv4 = htobe32(INADDR_LOOPBACK);
} else if (is_gateway_hostname(name)) {
@@ -348,7 +348,7 @@ enum nss_status _nss_myhostname_gethostbyname3_r(
if (is_localhost(name)) {
canonical = "localhost";
- local_address_ipv4 = htonl(INADDR_LOOPBACK);
+ local_address_ipv4 = htobe32(INADDR_LOOPBACK);
} else if (is_gateway_hostname(name)) {
@@ -437,9 +437,9 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4)
goto found;
- if ((*(uint32_t*) addr) == htonl(INADDR_LOOPBACK)) {
+ if ((*(uint32_t*) addr) == htobe32(INADDR_LOOPBACK)) {
canonical = "localhost";
- local_address_ipv4 = htonl(INADDR_LOOPBACK);
+ local_address_ipv4 = htobe32(INADDR_LOOPBACK);
goto found;
}
diff --git a/src/test/test-nss.c b/src/test/test-nss.c
index 55af592287..c43bda5917 100644
--- a/src/test/test-nss.c
+++ b/src/test/test-nss.c
@@ -400,8 +400,8 @@ int main(int argc, char **argv) {
_cleanup_free_ char *dir = NULL, *hostname = NULL;
const char *module;
- const uint32_t local_address_ipv4 = htonl(0x7F000001);
- const uint32_t local_address_ipv4_2 = htonl(0x7F000002);
+ const uint32_t local_address_ipv4 = htobe32(0x7F000001);
+ const uint32_t local_address_ipv4_2 = htobe32(0x7F000002);
_cleanup_free_ struct local_address *addresses = NULL;
int n_addresses;
diff --git a/src/test/test-socket-util.c b/src/test/test-socket-util.c
index 1a439bd0d4..1f853a7f16 100644
--- a/src/test/test-socket-util.c
+++ b/src/test/test-socket-util.c
@@ -353,7 +353,7 @@ static void test_nameinfo_pretty(void) {
union sockaddr_union s = {
.in.sin_family = AF_INET,
.in.sin_port = 0,
- .in.sin_addr.s_addr = htonl(INADDR_ANY),
+ .in.sin_addr.s_addr = htobe32(INADDR_ANY),
};
int r;
@@ -391,17 +391,17 @@ static void test_sockaddr_equal(void) {
union sockaddr_union a = {
.in.sin_family = AF_INET,
.in.sin_port = 0,
- .in.sin_addr.s_addr = htonl(INADDR_ANY),
+ .in.sin_addr.s_addr = htobe32(INADDR_ANY),
};
union sockaddr_union b = {
.in.sin_family = AF_INET,
.in.sin_port = 0,
- .in.sin_addr.s_addr = htonl(INADDR_ANY),
+ .in.sin_addr.s_addr = htobe32(INADDR_ANY),
};
union sockaddr_union c = {
.in.sin_family = AF_INET,
.in.sin_port = 0,
- .in.sin_addr.s_addr = htonl(1234),
+ .in.sin_addr.s_addr = htobe32(1234),
};
union sockaddr_union d = {
.in6.sin6_family = AF_INET6,
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