diff --git a/docs/grub.texi b/docs/grub.texi index 82f6fa459..b9ddb9b8a 100644 --- a/docs/grub.texi +++ b/docs/grub.texi @@ -2446,6 +2446,10 @@ The boot file name provided by DHCP. Read-only. The name of the DHCP server responsible for these boot parameters. Read-only. +@item net_@var{}_next_server +The IP address of the next (usually, TFTP) server provided by DHCP. +Read-only. + @item net_default_interface Initially set to name of network interface that was used to load grub. Read-write, although setting it affects only interpretation of @@ -3062,6 +3066,7 @@ These variables have special meaning to GRUB. * net_@var{}_hostname:: * net_@var{}_ip:: * net_@var{}_mac:: +* net_@var{}_next_server:: * net_@var{}_rootpath:: * net_default_interface:: * net_default_ip:: @@ -3422,6 +3427,12 @@ The default is the value of @samp{color_normal} (@pxref{color_normal}). @xref{Network}. +@node net_@var{}_next_server +@subsection net_@var{}_next_server + +@xref{Network}. + + @node net_@var{}_rootpath @subsection net_@var{}_rootpath diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c index 189551a48..9e2fdb795 100644 --- a/grub-core/net/bootp.c +++ b/grub-core/net/bootp.c @@ -142,6 +142,7 @@ grub_net_configure_by_dhcp_ack (const char *name, grub_net_link_level_address_t hwaddr; struct grub_net_network_level_interface *inter; int mask = -1; + char server_ip[sizeof ("xxx.xxx.xxx.xxx")]; addr.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV4; addr.ipv4 = bp->your_ip; @@ -192,15 +193,22 @@ grub_net_configure_by_dhcp_ack (const char *name, if (size > OFFSET_OF (boot_file, bp)) grub_env_set_net_property (name, "boot_file", bp->boot_file, sizeof (bp->boot_file)); + if (bp->server_ip) + { + grub_snprintf (server_ip, sizeof (server_ip), "%d.%d.%d.%d", + ((grub_uint8_t *) &bp->server_ip)[0], + ((grub_uint8_t *) &bp->server_ip)[1], + ((grub_uint8_t *) &bp->server_ip)[2], + ((grub_uint8_t *) &bp->server_ip)[3]); + grub_env_set_net_property (name, "next_server", server_ip, sizeof (server_ip)); + grub_print_error (); + } + if (is_def) grub_net_default_server = 0; if (is_def && !grub_net_default_server && bp->server_ip) { - grub_net_default_server = grub_xasprintf ("%d.%d.%d.%d", - ((grub_uint8_t *) &bp->server_ip)[0], - ((grub_uint8_t *) &bp->server_ip)[1], - ((grub_uint8_t *) &bp->server_ip)[2], - ((grub_uint8_t *) &bp->server_ip)[3]); + grub_net_default_server = grub_strdup (server_ip); grub_print_error (); } @@ -212,11 +220,7 @@ grub_net_configure_by_dhcp_ack (const char *name, if (device && !*device && bp->server_ip) { - *device = grub_xasprintf ("tftp,%d.%d.%d.%d", - ((grub_uint8_t *) &bp->server_ip)[0], - ((grub_uint8_t *) &bp->server_ip)[1], - ((grub_uint8_t *) &bp->server_ip)[2], - ((grub_uint8_t *) &bp->server_ip)[3]); + *device = grub_xasprintf ("tftp,%s", server_ip); grub_print_error (); } if (size > OFFSET_OF (server_name, bp)