mirror of
https://github.com/openwrt/openwrt.git
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166 lines
4.6 KiB
Diff
166 lines
4.6 KiB
Diff
From 02fbe60e1c7e74d2ba57109575e7bfc238b1b5d4 Mon Sep 17 00:00:00 2001
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From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
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Date: Sun, 5 Apr 2020 17:18:23 +0100
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Subject: [PATCH] drop runtime old kernel support
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Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
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---
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src/dnsmasq.c | 4 ----
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src/dnsmasq.h | 5 +---
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src/ipset.c | 64 ++++-----------------------------------------------
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src/util.c | 19 ---------------
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4 files changed, 5 insertions(+), 87 deletions(-)
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--- a/src/dnsmasq.c
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+++ b/src/dnsmasq.c
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@@ -103,10 +103,6 @@ int main (int argc, char **argv)
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read_opts(argc, argv, compile_opts);
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-#ifdef HAVE_LINUX_NETWORK
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- daemon->kernel_version = kernel_version();
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-#endif
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-
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if (daemon->edns_pktsz < PACKETSZ)
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daemon->edns_pktsz = PACKETSZ;
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--- a/src/dnsmasq.h
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+++ b/src/dnsmasq.h
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@@ -1248,7 +1248,7 @@ extern struct daemon {
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int inotifyfd;
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#endif
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#if defined(HAVE_LINUX_NETWORK)
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- int netlinkfd, kernel_version;
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+ int netlinkfd;
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#elif defined(HAVE_BSD_NETWORK)
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int dhcp_raw_fd, dhcp_icmp_fd, routefd;
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#endif
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@@ -1453,9 +1453,6 @@ int read_write(int fd, unsigned char *pa
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void close_fds(long max_fd, int spare1, int spare2, int spare3);
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int wildcard_match(const char* wildcard, const char* match);
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int wildcard_matchn(const char* wildcard, const char* match, int num);
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-#ifdef HAVE_LINUX_NETWORK
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-int kernel_version(void);
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-#endif
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/* log.c */
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void die(char *message, char *arg1, int exit_code) ATTRIBUTE_NORETURN;
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--- a/src/ipset.c
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+++ b/src/ipset.c
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@@ -70,7 +70,7 @@ struct my_nfgenmsg {
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#define NL_ALIGN(len) (((len)+3) & ~(3))
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static const struct sockaddr_nl snl = { .nl_family = AF_NETLINK };
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-static int ipset_sock, old_kernel;
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+static int ipset_sock;
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static char *buffer;
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static inline void add_attr(struct nlmsghdr *nlh, uint16_t type, size_t len, const void *data)
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@@ -85,12 +85,7 @@ static inline void add_attr(struct nlmsg
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void ipset_init(void)
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{
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- old_kernel = (daemon->kernel_version < KERNEL_VERSION(2,6,32));
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-
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- if (old_kernel && (ipset_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) != -1)
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- return;
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-
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- if (!old_kernel &&
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+ if (
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(buffer = safe_malloc(BUFF_SZ)) &&
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(ipset_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER)) != -1 &&
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(bind(ipset_sock, (struct sockaddr *)&snl, sizeof(snl)) != -1))
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@@ -147,65 +142,14 @@ static int new_add_to_ipset(const char *
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return errno == 0 ? 0 : -1;
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}
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-
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-static int old_add_to_ipset(const char *setname, const union all_addr *ipaddr, int remove)
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-{
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- socklen_t size;
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- struct ip_set_req_adt_get {
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- unsigned op;
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- unsigned version;
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- union {
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- char name[IPSET_MAXNAMELEN];
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- uint16_t index;
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- } set;
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- char typename[IPSET_MAXNAMELEN];
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- } req_adt_get;
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- struct ip_set_req_adt {
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- unsigned op;
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- uint16_t index;
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- uint32_t ip;
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- } req_adt;
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-
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- if (strlen(setname) >= sizeof(req_adt_get.set.name))
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- {
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- errno = ENAMETOOLONG;
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- return -1;
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- }
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-
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- req_adt_get.op = 0x10;
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- req_adt_get.version = 3;
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- strcpy(req_adt_get.set.name, setname);
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- size = sizeof(req_adt_get);
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- if (getsockopt(ipset_sock, SOL_IP, 83, &req_adt_get, &size) < 0)
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- return -1;
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- req_adt.op = remove ? 0x102 : 0x101;
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- req_adt.index = req_adt_get.set.index;
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- req_adt.ip = ntohl(ipaddr->addr4.s_addr);
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- if (setsockopt(ipset_sock, SOL_IP, 83, &req_adt, sizeof(req_adt)) < 0)
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- return -1;
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-
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- return 0;
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-}
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-
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-
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-
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int add_to_ipset(const char *setname, const union all_addr *ipaddr, int flags, int remove)
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{
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int ret = 0, af = AF_INET;
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if (flags & F_IPV6)
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- {
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af = AF_INET6;
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- /* old method only supports IPv4 */
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- if (old_kernel)
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- {
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- errno = EAFNOSUPPORT ;
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- ret = -1;
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- }
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- }
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-
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- if (ret != -1)
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- ret = old_kernel ? old_add_to_ipset(setname, ipaddr, remove) : new_add_to_ipset(setname, ipaddr, af, remove);
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+
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+ ret = new_add_to_ipset(setname, ipaddr, af, remove);
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if (ret == -1)
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my_syslog(LOG_ERR, _("failed to update ipset %s: %s"), setname, strerror(errno));
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--- a/src/util.c
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+++ b/src/util.c
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@@ -855,22 +855,3 @@ int wildcard_matchn(const char* wildcard
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return (!num) || (*wildcard == *match);
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}
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-
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-#ifdef HAVE_LINUX_NETWORK
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-int kernel_version(void)
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-{
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- struct utsname utsname;
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- int version;
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- char *split;
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-
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- if (uname(&utsname) < 0)
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- die(_("failed to find kernel version: %s"), NULL, EC_MISC);
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-
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- split = strtok(utsname.release, ".");
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- version = (split ? atoi(split) : 0);
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- split = strtok(NULL, ".");
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- version = version * 256 + (split ? atoi(split) : 0);
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- split = strtok(NULL, ".");
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- return version * 256 + (split ? atoi(split) : 0);
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-}
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-#endif
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