1 files changed, 42 insertions, 6 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3b8aeec4e327..af4aaa6c36f3 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -681,24 +681,55 @@ static char *mac_address_string(char *buf, char *end, u8 *addr,
         char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")];
         char *p = mac_addr;
         int i;
+        char separator;
+
+        if (fmt[1] == 'F') {            /* FDDI canonical format */
+                separator = '-';
+        } else {
+                separator = ':';
+        }
 
         for (i = 0; i < 6; i++) {
                 p = pack_hex_byte(p, addr[i]);
                 if (fmt[0] == 'M' && i != 5)
-                        *p++ = ':';
+                        *p++ = separator;
         }
         *p = '\0';
 
         return string(buf, end, mac_addr, spec);
 }
 
-static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
+static char *ip4_string(char *p, const u8 *addr, const char *fmt)
 {
         int i;
-
+        bool leading_zeros = (fmt[0] == 'i');
+        int index;
+        int step;
+
+        switch (fmt[2]) {
+        case 'h':
+#ifdef __BIG_ENDIAN
+                index = 0;
+                step = 1;
+#else
+                index = 3;
+                step = -1;
+#endif
+                break;
+        case 'l':
+                index = 3;
+                step = -1;
+                break;
+        case 'n':
+        case 'b':
+        default:
+                index = 0;
+                step = 1;
+                break;
+        }
         for (i = 0; i < 4; i++) {
                 char temp[3];   /* hold each IP quad in reverse order */
-                int digits = put_dec_trunc(temp, addr[i]) - temp;
+                int digits = put_dec_trunc(temp, addr[index]) - temp;
                 if (leading_zeros) {
                         if (digits < 3)
                                 *p++ = '0';
@@ -710,6 +741,7 @@ static char *ip4_string(char *p, const u8 *addr, bool leading_zeros)
                         *p++ = temp[digits];
                 if (i < 3)
                         *p++ = '.';
+                index += step;
         }
         *p = '\0';
 
@@ -789,7 +821,7 @@ static char *ip6_compressed_string(char *p, const char *addr)
         if (useIPv4) {
                 if (needcolon)
                         *p++ = ':';
-                p = ip4_string(p, &in6.s6_addr[12], false);
+                p = ip4_string(p, &in6.s6_addr[12], "I4");
         }
         *p = '\0';
 
@@ -829,7 +861,7 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
 {
         char ip4_addr[sizeof("255.255.255.255")];
 
-        ip4_string(ip4_addr, addr, fmt[0] == 'i');
+        ip4_string(ip4_addr, addr, fmt);
 
         return string(buf, end, ip4_addr, spec);
 }
@@ -896,12 +928,15 @@ static char *uuid_string(char *buf, char *end, const u8 *addr,
  * - 'M' For a 6-byte MAC address, it prints the address in the
  *       usual colon-separated hex notation
  * - 'm' For a 6-byte MAC address, it prints the hex address without colons
+ * - 'MF' For a 6-byte MAC FDDI address, it prints the address
+ *       with a dash-separated hex notation
  * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way
  *       IPv4 uses dot-separated decimal without leading 0's (1.2.3.4)
  *       IPv6 uses colon separated network-order 16 bit hex with leading 0's
  * - 'i' [46] for 'raw' IPv4/IPv6 addresses
  *       IPv6 omits the colons (01020304...0f)
  *       IPv4 uses dot-separated decimal with leading 0's (010.123.045.006)
+ * - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order
  * - 'I6c' for IPv6 addresses printed as specified by
  *       http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00
  * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form
@@ -939,6 +974,7 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
                 return resource_string(buf, end, ptr, spec, fmt);
         case 'M':                       /* Colon separated: 00:01:02:03:04:05 */
         case 'm':                       /* Contiguous: 000102030405 */
+                                        /* [mM]F (FDDI, bit reversed) */
                 return mac_address_string(buf, end, ptr, spec, fmt);
         case 'I':                       /* Formatted IP supported
                                          * 4:   1.2.3.4