Re: [PATCH 1/2] tpm: bios log parsing fixes

[Kylene Jo Hall]

Ack'ed by: Kylene Hall <kjhall@xxxxxxxxxx>

On Fri, 2006-05-19 at 08:27 +0900, Seiji Munetoh wrote:
> This patch fixes "tcpa_pc_event" misalignment between enum, strings and
> TCG PC spec and output of the event contains a hash data.
> 
> Signed-off-by: Seiji Munetoh <seiji.munetoh@xxxxxxxxx>
> --- linux-2.6.17-rc4/drivers/char/tpm/tpm_bios.c	2006-05-16
> 09:33:06.000000000 +0900
> +++ linux-2.6.17-rc4-tpm/drivers/char/tpm/tpm_bios.c	2006-05-19
> 08:12:30.000000000 +0900
> @@ -105,6 +105,12 @@ static const char* tcpa_event_type_strin
>  	"Non-Host Info"
>  };
>  
> +struct tcpa_pc_event {
> +	u32 event_id;
> +	u32 event_size;
> +	u8 event_data[0];
> +};
> +
>  enum tcpa_pc_event_ids {
>  	SMBIOS = 1,
>  	BIS_CERT,
> @@ -114,14 +120,16 @@ enum tcpa_pc_event_ids {
>  	NVRAM,
>  	OPTION_ROM_EXEC,
>  	OPTION_ROM_CONFIG,
> +	UNUSED2,
>  	OPTION_ROM_MICROCODE,
>  	S_CRTM_VERSION,
>  	S_CRTM_CONTENTS,
>  	POST_CONTENTS,
> +	HOST_TABLE_OF_DEVICES,
>  };
>  
>  static const char* tcpa_pc_event_id_strings[] = {
> -	""
> +	"",
>  	"SMBIOS",
>  	"BIS Certificate",
>  	"POST BIOS ",
> @@ -130,11 +138,12 @@ static const char* tcpa_pc_event_id_stri
>  	"NVRAM",
>  	"Option ROM",
>  	"Option ROM config",
> -	"Option ROM microcode",
> +	"",
> +	"Option ROM microcode ",
>  	"S-CRTM Version",
> -	"S-CRTM Contents",
> -	"S-CRTM POST Contents",
> -	"POST Contents",
> +	"S-CRTM Contents ",
> +	"POST Contents ",
> +	"Table of Devices",
>  };
>  
>  /* returns pointer to start of pos. entry of tcg log */
> @@ -206,7 +215,7 @@ static int get_event_name(char *dest, st
>  	const char *name = "";
>  	char data[40] = "";
>  	int i, n_len = 0, d_len = 0;
> -	u32 event_id;
> +	struct tcpa_pc_event *pc_event;
>  
>  	switch(event->event_type) {
>  	case PREBOOT:
> @@ -235,31 +244,32 @@ static int get_event_name(char *dest, st
>  		}
>  		break;
>  	case EVENT_TAG:
> -		event_id = be32_to_cpu(*((u32 *)event_entry));
> +		pc_event = (struct tcpa_pc_event *)event_entry;
>  
>  		/* ToDo Row data -> Base64 */
>  
> -		switch (event_id) {
> +		switch (pc_event->event_id) {
>  		case SMBIOS:
>  		case BIS_CERT:
>  		case CMOS:
>  		case NVRAM:
>  		case OPTION_ROM_EXEC:
>  		case OPTION_ROM_CONFIG:
> -		case OPTION_ROM_MICROCODE:
>  		case S_CRTM_VERSION:
> -		case S_CRTM_CONTENTS:
> -		case POST_CONTENTS:
> -			name = tcpa_pc_event_id_strings[event_id];
> +			name = tcpa_pc_event_id_strings[pc_event->event_id];
>  			n_len = strlen(name);
>  			break;
> +		/* hash data */
>  		case POST_BIOS_ROM:
>  		case ESCD:
> -			name = tcpa_pc_event_id_strings[event_id];
> +		case OPTION_ROM_MICROCODE:
> +		case S_CRTM_CONTENTS:
> +		case POST_CONTENTS:
> +			name = tcpa_pc_event_id_strings[pc_event->event_id];
>  			n_len = strlen(name);
>  			for (i = 0; i < 20; i++)
> -				d_len += sprintf(data, "%02x",
> -						event_entry[8 + i]);
> +				d_len += sprintf(&data[2*i], "%02x",
> +						pc_event->event_data[i]);
>  			break;
>  		default:
>  			break;
> 
> 

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