#define DFLT_AF "inet"
#define DFLT_HW "ether"
-#define ARP_OPT_A (0x1)
-#define ARP_OPT_p (0x2)
-#define ARP_OPT_H (0x4)
-#define ARP_OPT_t (0x8)
-#define ARP_OPT_i (0x10)
-#define ARP_OPT_a (0x20)
-#define ARP_OPT_d (0x40)
-#define ARP_OPT_n (0x80) /* do not resolve addresses */
-#define ARP_OPT_D (0x100) /* HW-address is devicename */
-#define ARP_OPT_s (0x200)
-#define ARP_OPT_v (0x400 * DEBUG) /* debugging output flag */
-
-
-static const struct aftype *ap; /* current address family */
-static const struct hwtype *hw; /* current hardware type */
-static int sockfd; /* active socket descriptor */
-static smallint hw_set; /* flag if hw-type was set (-H) */
-static const char *device = ""; /* current device */
+enum {
+ ARP_OPT_A = (1 << 0),
+ ARP_OPT_p = (1 << 1),
+ ARP_OPT_H = (1 << 2),
+ ARP_OPT_t = (1 << 3),
+ ARP_OPT_i = (1 << 4),
+ ARP_OPT_a = (1 << 5),
+ ARP_OPT_d = (1 << 6),
+ ARP_OPT_n = (1 << 7), /* do not resolve addresses */
+ ARP_OPT_D = (1 << 8), /* HW-address is devicename */
+ ARP_OPT_s = (1 << 9),
+ ARP_OPT_v = (1 << 10) * DEBUG, /* debugging output flag */
+};
+
+enum {
+ sockfd = 3, /* active socket descriptor */
+};
+
+struct globals {
+ const struct aftype *ap; /* current address family */
+ const struct hwtype *hw; /* current hardware type */
+ const char *device; /* current device */
+ smallint hw_set; /* flag if hw-type was set (-H) */
+
+} FIX_ALIASING;
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define ap (G.ap )
+#define hw (G.hw )
+#define device (G.device )
+#define hw_set (G.hw_set )
+#define INIT_G() do { \
+ device = ""; \
+} while (0)
+
static const char options[] ALIGN1 =
"pub\0"
}
bb_error_msg("device '%s' has HW address %s '%s'",
ifname, xhw->name,
- xhw->print((char *) &ifr.ifr_hwaddr.sa_data));
+ xhw->print((unsigned char *) &ifr.ifr_hwaddr.sa_data));
}
}
arp_disp(const char *name, char *ip, int type, int arp_flags,
char *hwa, char *mask, char *dev)
{
+ static const int arp_masks[] = {
+ ATF_PERM, ATF_PUBL,
+#ifdef HAVE_ATF_MAGIC
+ ATF_MAGIC,
+#endif
+#ifdef HAVE_ATF_DONTPUB
+ ATF_DONTPUB,
+#endif
+ ATF_USETRAILERS,
+ };
+ static const char arp_labels[] ALIGN1 = "PERM\0""PUP\0"
+#ifdef HAVE_ATF_MAGIC
+ "AUTO\0"
+#endif
+#ifdef HAVE_ATF_DONTPUB
+ "DONTPUB\0"
+#endif
+ "TRAIL\0"
+ ;
+
const struct hwtype *xhw;
xhw = get_hwntype(type);
if (arp_flags & ATF_NETMASK)
printf("netmask %s ", mask);
- if (arp_flags & ATF_PERM)
- printf("PERM ");
- if (arp_flags & ATF_PUBL)
- printf("PUP ");
-#ifdef HAVE_ATF_MAGIC
- if (arp_flags & ATF_MAGIC)
- printf("AUTO ");
-#endif
-#ifdef HAVE_ATF_DONTPUB
- if (arp_flags & ATF_DONTPUB)
- printf("DONTPUB ");
-#endif
- if (arp_flags & ATF_USETRAILERS)
- printf("TRAIL ");
-
- printf("on %s\n", dev);
+ print_flags_separated(arp_masks, arp_labels, arp_flags, " ");
+ printf(" on %s\n", dev);
}
/* Display the contents of the ARP cache in the kernel. */
}
host = xstrdup(ap->sprint(&sa, 1));
}
- fp = xfopen("/proc/net/arp", "r");
+ fp = xfopen_for_read("/proc/net/arp");
/* Bypass header -- read one line */
fgets(line, sizeof(line), fp);
return 0;
}
-int arp_main(int argc, char **argv);
-int arp_main(int argc, char **argv)
+int arp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int arp_main(int argc UNUSED_PARAM, char **argv)
{
- char *hw_type;
- char *protocol;
+ const char *hw_type = "ether";
+ const char *protocol;
+ unsigned opts;
+
+ INIT_G();
- /* Initialize variables... */
+ xmove_fd(xsocket(AF_INET, SOCK_DGRAM, 0), sockfd);
ap = get_aftype(DFLT_AF);
if (!ap)
bb_error_msg_and_die("%s: %s not supported", DFLT_AF, "address family");
- getopt32(argc, argv, "A:p:H:t:i:adnDsv", &protocol, &protocol,
+ opts = getopt32(argv, "A:p:H:t:i:adnDsv", &protocol, &protocol,
&hw_type, &hw_type, &device);
argv += optind;
- if (option_mask32 & ARP_OPT_A || option_mask32 & ARP_OPT_p) {
+ if (opts & (ARP_OPT_A | ARP_OPT_p)) {
ap = get_aftype(protocol);
if (ap == NULL)
bb_error_msg_and_die("%s: unknown %s", protocol, "address family");
}
- if (option_mask32 & ARP_OPT_A || option_mask32 & ARP_OPT_p) {
+ if (opts & (ARP_OPT_A | ARP_OPT_p)) {
hw = get_hwtype(hw_type);
if (hw == NULL)
bb_error_msg_and_die("%s: unknown %s", hw_type, "hardware type");
hw_set = 1;
}
- //if (option_mask32 & ARP_OPT_i)... -i
+ //if (opts & ARP_OPT_i)... -i
if (ap->af != AF_INET) {
bb_error_msg_and_die("%s: kernel only supports 'inet'", ap->name);
bb_error_msg_and_die("%s: %s without ARP support",
hw->name, "hardware type");
}
- sockfd = xsocket(AF_INET, SOCK_DGRAM, 0);
/* Now see what we have to do here... */
- if (option_mask32 & (ARP_OPT_d|ARP_OPT_s)) {
+ if (opts & (ARP_OPT_d | ARP_OPT_s)) {
if (argv[0] == NULL)
bb_error_msg_and_die("need host name");
- if (option_mask32 & ARP_OPT_s)
+ if (opts & ARP_OPT_s)
return arp_set(argv);
return arp_del(argv);
}
- //if (option_mask32 & ARP_OPT_a) - default
+ //if (opts & ARP_OPT_a) - default
return arp_show(argv[0]);
}
projects / oweals / busybox.git / blobdiff