Fix the swab* macros.

[yaboot.git] / second / file.c

diff --git a/second/file.c b/second/file.c
index 81d91a9f6c6341511238d03439cdd8be46ed9ac3..02b187231716e318964dc77681637d000ad2a35a 100644 (file)
--- a/second/file.c
+++ b/second/file.c
@@ -88,7 +88,7 @@ static char * is_valid_ipv4_str(char *str)
 
 
 /*
- * Copy the string from source to dest till newline or comma(,) is seen
+ * Copy the string from source to dest until the end of string or comma is seen
  * in the source.
  * Move source and dest pointers respectively.
  * Returns pointer to the start of the string that has just been copied.
@@ -104,9 +104,9 @@ scopy(char **dest, char **source)
      while (**source != ',' && **source != '\0')
          *(*dest)++ = *(*source)++;
      if (**source != '\0')
-         *(*source)++;
+         (void)*(*source)++;
      **dest = '\0';
-     *(*dest)++;
+     (void)*(*dest)++;
      return ret;
 }
 
@@ -163,9 +163,14 @@ extract_ipv4_args(char *imagepath, struct boot_fspec_t *result)
          args++; /* If comma(,) is not immediately followed by ':' then go past the , */
 
      /*
-      * read the arguments in order: siaddr,filename,ciaddr,giaddr,
+      * read the arguments in order: vtag,siaddr,filename,ciaddr,giaddr,
       * bootp-retries,tftp-retries,addl_prameters
       */
+     if ((tmp = strstr(imagepath, "vtag=")) != NULL) {
+       result->vtag = scopy(&str, &tmp);
+       args = tmp;
+     }
+
      result->siaddr = is_valid_ipv4_str(scopy(&str, &args));
      result->file = scopy(&str, &args);
      result->ciaddr = is_valid_ipv4_str(scopy(&str, &args));
@@ -186,7 +191,6 @@ enum dhcp_options {
      DHCP_PAD = 0,
      DHCP_NETMASK = 1,
      DHCP_ROUTERS = 3,
-     DHCP_DNS = 6,
      DHCP_END = 255,
 };
 
@@ -218,13 +222,18 @@ extract_vendor_options(struct bootp_packet *packet, struct boot_fspec_t *result)
       *         it's malformed. :( */
      while (options[i] != DHCP_END) {
           __u8 tag = options[i++], len;
-          __u32 value;
+          __u32 value = 0;
 
           if (tag == DHCP_PAD)
                continue;
 
           len = options[i++];
-          memcpy(&value, &options[i], len);
+          /* Clamp the maxium length of the memcpy() to the right size for
+           * value. */
+          if (len > sizeof(value))
+               memcpy(&value, &options[i], sizeof(value));
+          else
+               memcpy(&value, &options[i], len);
 
 #if DEBUG
 {
@@ -261,10 +270,8 @@ extract_vendor_options(struct bootp_packet *packet, struct boot_fspec_t *result)
 /*
  * Check netinfo for ipv4 parameters and add them to the fspec iff the
  * fspec has no existing value.
- *
- * Returns 1 on success, 0 on failure.
  */
-static int
+static void
 extract_netinfo_args(struct boot_fspec_t *result)
 {
      struct bootp_packet *packet;
@@ -272,7 +279,7 @@ extract_netinfo_args(struct boot_fspec_t *result)
      /* Check to see if we can get the [scyg]iaddr fields from netinfo */
      packet = prom_get_netinfo();
      if (!packet)
-          return 0;
+          return;
 
      DEBUG_F("We have a boot packet\n");
      DEBUG_F(" siaddr = <%x>\n", packet->siaddr);
@@ -304,8 +311,6 @@ extract_netinfo_args(struct boot_fspec_t *result)
           result->giaddr = ipv4_to_str(packet->siaddr);
           DEBUG_F("Forcing giaddr to siaddr <%s>\n", result->giaddr);
      }
-
-     return 1;
 }
 
 /*
@@ -331,6 +336,9 @@ extract_ipv6_args(char *imagepath, struct boot_fspec_t *result)
      if ((tmp = strstr(imagepath, "dhcpv6=")) != NULL)
        result->dhcpv6 = scopy(&str, &tmp);
 
+     if ((tmp = strstr(imagepath, "vtag=")) != NULL)
+       result->vtag = scopy(&str, &tmp);
+
      if ((tmp = strstr(imagepath, "ciaddr=")) != NULL)
        result->ciaddr = scopy(&str, &tmp);
 
@@ -370,7 +378,7 @@ extract_netboot_args(char *imagepath, struct boot_fspec_t *result)
          ret = extract_ipv6_args(imagepath, result);
      else
          ret = extract_ipv4_args(imagepath, result);
-     ret |= extract_netinfo_args(result);
+     extract_netinfo_args(result);
 
      DEBUG_F("ipv6 = <%d>\n", result->is_ipv6);
      DEBUG_F("siaddr = <%s>\n", result->siaddr);
@@ -675,6 +683,9 @@ int open_file(struct boot_fspec_t* spec, struct boot_file_t* file)
      case FILE_DEVICE_BLOCK:
          DEBUG_F("device is a block device\n");
          return file_block_open(file, spec, spec->part);
+     case FILE_DEVICE_ISCSI:
+         DEBUG_F("device is a iSCSI device\n");
+         return file_block_open(file, spec, spec->part);
      case FILE_DEVICE_NET:
          DEBUG_F("device is a network device\n");
          return file_net_open(file, spec);