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https://github.com/sheumann/hush.git
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networking/interface.c: reduce bss usage
function old new delta .rodata 158918 158950 +32 display_interfaces 133 153 +20 UNSPEC_print 56 68 +12 pr_ether 59 65 +6 static.proc_read 4 1 -3 interface_opt_a 4 1 -3 in_ether 139 136 -3 ifconfig_main 1296 1293 -3 if_readlist_proc 686 680 -6 ife_print 1350 1338 -12 do_if_print 46 - -46 static.buff 369 264 -105 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 4/7 up/down: 70/-181) Total: -111 bytes # size busybox_old busybox_unstripped text data bss dec hex filename 751073 3080 14800 768953 bbbb9 busybox_old 751073 3048 14688 768809 bbb29 busybox_unstripped
This commit is contained in:
Denis Vlasenko
parent
91e149a373
commit
1b16bdaebf
@ -12,14 +12,15 @@
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/* hostfirst!=0 If we expect this to be a hostname,
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try hostname database first
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*/
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extern int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst);
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int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst);
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/* numeric: & 0x8000: "default" instead of "*",
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* & 0x4000: host instead of net,
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* & 0x0fff: don't resolve
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*/
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extern int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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int numeric, unsigned int netmask);
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int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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int numeric, unsigned int netmask);
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extern int INET6_resolve(const char *name, struct sockaddr_in6 *sin6);
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extern int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6, int numeric);
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int INET6_resolve(const char *name, struct sockaddr_in6 *sin6);
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int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6, int numeric);
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@ -699,7 +699,7 @@ struct hwtype {
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int (*activate) (int fd);
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int suppress_null_addr;
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};
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extern int interface_opt_a;
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extern smallint interface_opt_a;
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int display_interfaces(char *ifname);
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const struct aftype *get_aftype(const char *name);
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const struct hwtype *get_hwtype(const char *name);
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@ -98,7 +98,7 @@ int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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/* Grmpf. -FvK */
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if (s_in->sin_family != AF_INET) {
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#ifdef DEBUG
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bb_error_msg("rresolve: unsupport address family %d !",
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bb_error_msg("rresolve: unsupported address family %d!",
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s_in->sin_family);
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#endif
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errno = EAFNOSUPPORT;
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@ -88,11 +88,9 @@ static const char *INET_sprint(struct sockaddr *sap, int numeric)
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
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numeric, 0xffffff00) != 0)
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return NULL;
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return buff;
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}
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@ -221,10 +219,13 @@ static const struct aftype inet6_aftype = {
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/* Display an UNSPEC address. */
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static char *UNSPEC_print(unsigned char *ptr)
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{
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static char buff[sizeof(struct sockaddr) * 3 + 1];
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static char *buff;
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char *pos;
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unsigned int i;
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if (!buff);
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buff = xmalloc(sizeof(struct sockaddr) * 3 + 1);
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pos = buff;
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for (i = 0; i < sizeof(struct sockaddr); i++) {
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/* careful -- not every libc's sprintf returns # bytes written */
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@ -341,7 +342,7 @@ struct interface {
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};
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int interface_opt_a; /* show all interfaces */
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smallint interface_opt_a; /* show all interfaces */
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static struct interface *int_list, *int_last;
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@ -522,7 +523,7 @@ static int if_readconf(void)
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ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
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if (ioctl(skfd, SIOCGIFCONF, &ifc) < 0) {
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perror("SIOCGIFCONF");
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bb_perror_msg("SIOCGIFCONF");
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goto out;
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}
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if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) {
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@ -548,7 +549,8 @@ static int if_readconf(void)
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static int if_readlist_proc(char *target)
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{
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static int proc_read;
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static smallint proc_read;
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FILE *fh;
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char buf[512];
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struct interface *ife;
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@ -581,7 +583,7 @@ static int if_readlist_proc(char *target)
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break;
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}
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if (ferror(fh)) {
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perror(_PATH_PROCNET_DEV);
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bb_perror_msg(_PATH_PROCNET_DEV);
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err = -1;
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proc_read = 0;
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}
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@ -598,22 +600,6 @@ static int if_readlist(void)
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return err;
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}
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static int for_all_interfaces(int (*doit) (struct interface *, void *),
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void *cookie)
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{
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struct interface *ife;
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if (!int_list && (if_readlist() < 0))
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return -1;
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for (ife = int_list; ife; ife = ife->next) {
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int err = doit(ife, cookie);
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if (err)
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return err;
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}
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return 0;
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}
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/* Fetch the interface configuration from the kernel. */
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static int if_fetch(struct interface *ife)
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{
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@ -732,9 +718,10 @@ static const struct hwtype loop_hwtype = {
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/* Display an Ethernet address in readable format. */
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static char *pr_ether(unsigned char *ptr)
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{
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static char buff[64];
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static char *buff;
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snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
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free(buff);
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buff = xasprintf("%02X:%02X:%02X:%02X:%02X:%02X",
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(ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
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(ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
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);
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@ -743,7 +730,7 @@ static char *pr_ether(unsigned char *ptr)
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static int in_ether(const char *bufp, struct sockaddr *sap);
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static struct hwtype ether_hwtype = {
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static const struct hwtype ether_hwtype = {
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.name = "ether",
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.title = "Ethernet",
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.type = ARPHRD_ETHER,
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@ -1040,29 +1027,28 @@ static void ife_print(struct interface *ptr)
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(struct sockaddr *) &sap.sin6_addr);
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sap.sin6_family = AF_INET6;
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printf(" inet6 addr: %s/%d",
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inet6_aftype.sprint((struct sockaddr *) &sap, 1),
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INET6_sprint((struct sockaddr *) &sap, 1),
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plen);
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printf(" Scope:");
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switch (scope & IPV6_ADDR_SCOPE_MASK) {
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case 0:
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printf("Global");
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puts("Global");
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break;
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case IPV6_ADDR_LINKLOCAL:
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printf("Link");
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puts("Link");
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break;
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case IPV6_ADDR_SITELOCAL:
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printf("Site");
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puts("Site");
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break;
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case IPV6_ADDR_COMPATv4:
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printf("Compat");
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puts("Compat");
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break;
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case IPV6_ADDR_LOOPBACK:
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printf("Host");
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puts("Host");
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break;
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default:
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printf("Unknown");
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puts("Unknown");
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}
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puts("");
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}
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}
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fclose(f);
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@ -1144,14 +1130,13 @@ static void ife_print(struct interface *ptr)
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}
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static int do_if_print(struct interface *ife, void *cookie)
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static int do_if_print(struct interface *ife) /*, int *opt_a)*/
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{
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int *opt_a = (int *) cookie;
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int res;
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res = do_if_fetch(ife);
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if (res >= 0) {
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if ((ife->flags & IFF_UP) || *opt_a)
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if ((ife->flags & IFF_UP) || interface_opt_a)
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ife_print(ife);
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}
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return res;
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@ -1167,21 +1152,45 @@ static struct interface *lookup_interface(char *name)
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return ife;
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}
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#ifdef UNUSED
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static int for_all_interfaces(int (*doit) (struct interface *, void *),
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void *cookie)
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{
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struct interface *ife;
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if (!int_list && (if_readlist() < 0))
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return -1;
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for (ife = int_list; ife; ife = ife->next) {
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int err = doit(ife, cookie);
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if (err)
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return err;
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}
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return 0;
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}
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#endif
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/* for ipv4 add/del modes */
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static int if_print(char *ifname)
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{
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struct interface *ife;
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int res;
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if (!ifname) {
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res = for_all_interfaces(do_if_print, &interface_opt_a);
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} else {
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struct interface *ife;
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ife = lookup_interface(ifname);
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res = do_if_fetch(ife);
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if (res >= 0)
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ife_print(ife);
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/*res = for_all_interfaces(do_if_print, &interface_opt_a);*/
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if (!int_list && (if_readlist() < 0))
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return -1;
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for (ife = int_list; ife; ife = ife->next) {
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int err = do_if_print(ife); /*, &interface_opt_a);*/
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if (err)
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return err;
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}
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return 0;
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}
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ife = lookup_interface(ifname);
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res = do_if_fetch(ife);
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if (res >= 0)
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ife_print(ife);
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return res;
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}
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