Re: [Qemu-devel] [PATCH 4/7] Use sizeof(qemu_uuid) instead of literal 16

[Laszlo Ersek <lersek@redhat.com>]

On 06/06/13 18:27, Markus Armbruster wrote:
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  arch_init.c             | 3 ++-
>  hw/nvram/fw_cfg.c       | 2 +-
>  include/sysemu/sysemu.h | 2 +-
>  3 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch_init.c b/arch_init.c
> index 5d71870..aa24660 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -1029,7 +1029,8 @@ int qemu_uuid_parse(const char *str, uint8_t *uuid)
>          return -1;
>      }
>  #ifdef TARGET_I386
> -    smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
> +    smbios_add_field(1, offsetof(struct smbios_type_1, uuid),
> +                     sizeof(uuid), uuid);
>  #endif
>      return 0;
>  }

I believe this is wrong, "uuid" is not an array here but a pointer. I
guess you mistyped "sizeof(qemu_uuid)" as "sizeof(uuid)" in the third arg.

> diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
> index 3c255ce..f1d3861 100644
> --- a/hw/nvram/fw_cfg.c
> +++ b/hw/nvram/fw_cfg.c
> @@ -509,7 +509,7 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
>          sysbus_mmio_map(d, 1, data_addr);
>      }
>      fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4);
> -    fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
> +    fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, sizeof(qemu_uuid));
>      fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC));
>      fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
>      fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
> diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
> index 2fb71af..b969e56 100644
> --- a/include/sysemu/sysemu.h
> +++ b/include/sysemu/sysemu.h
> @@ -15,7 +15,7 @@
>  extern const char *bios_name;
>  
>  extern const char *qemu_name;
> -extern uint8_t qemu_uuid[];
> +extern uint8_t qemu_uuid[16];
>  int qemu_uuid_parse(const char *str, uint8_t *uuid);
>  #define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
>  
> 

Rest seems OK.

Laszlo