smbinfo: add fsctl-getobjid support

This will print the ObjectID buffer for the object.
This is an example on how to fetch FSCTL data for an object using
the passthrough API.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
---
 smbinfo.c   | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 smbinfo.rst |  2 ++
 2 files changed, 75 insertions(+)

чт, 14 мар. 2019 г. в 23:22, Ronnie Sahlberg <lsahlber@redhat.com>:
>
> This will print the ObjectID buffer for the object.
> This is an example on how to fetch FSCTL data for an object using
> the passthrough API.
>
> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
> ---
>  smbinfo.c   | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  smbinfo.rst |  2 ++
>  2 files changed, 75 insertions(+)
>
> diff --git a/smbinfo.c b/smbinfo.c
> index 6b63f9d..215842c 100644
> --- a/smbinfo.c
> +++ b/smbinfo.c
> @@ -39,6 +39,11 @@
>  #include <inttypes.h>
>
>  #define CIFS_IOCTL_MAGIC 0xCF
> +
> +/* query_info flags */
> +#define PASSTHRU_QUERY_INFO     0x00000000
> +#define PASSTHRU_FSCTL          0x00000001
> +
>  struct smb_query_info {
>          uint32_t   info_type;
>          uint32_t   file_info_class;
> @@ -170,6 +175,72 @@ print_bits(uint32_t mask, struct bit_string *bs)
>  }
>
>  static void
> +print_guid(uint8_t *sd)
> +{
> +       uint32_t u32;
> +       uint16_t u16;
> +       int i;
> +
> +       memcpy(&u32, &sd[0], 4);
> +       printf("%08x-", le32toh(u32));
> +
> +       memcpy(&u16, &sd[4], 2);
> +       printf("%04x-", le16toh(u16));
> +
> +       memcpy(&u16, &sd[6], 2);
> +       printf("%04x-", le16toh(u16));
> +
> +       printf("%02x%02x-", sd[8], sd[9]);
> +       for (i = 0; i < 6; i++)
> +               printf("%02x", sd[10 + i]);
> +}
> +
> +static void
> +print_objidbuf(uint8_t *sd)
> +{
> +       printf("Object-ID: ");
> +       print_guid(&sd[0]);
> +       printf("\n");
> +
> +       printf("Birth-Volume-ID: ");
> +       print_guid(&sd[16]);
> +       printf("\n");
> +
> +       printf("Birth-Object-ID: ");
> +       print_guid(&sd[32]);
> +       printf("\n");
> +
> +       printf("Domain-ID: ");
> +       print_guid(&sd[48]);
> +       printf("\n");
> +}
> +
> +static void
> +fsctlgetobjid(int f)
> +{
> +       struct smb_query_info *qi;
> +       struct stat st;
> +
> +       fstat(f, &st);
> +
> +       qi = malloc(sizeof(struct smb_query_info) + 64);
> +       memset(qi, 0, sizeof(qi) + 64);
> +       qi->info_type = 0x9009c;
> +       qi->file_info_class = 0;
> +       qi->additional_information = 0;
> +       qi->input_buffer_length = 64;
> +       qi->flags = PASSTHRU_FSCTL;
> +
> +       if (ioctl(f, CIFS_QUERY_INFO, qi) < 0) {
> +               fprintf(stderr, "ioctl failed with %s\n", strerror(errno));
> +               exit(1);
> +       }
> +       print_objidbuf((uint8_t *)(&qi[1]));
> +
> +       free(qi);
> +}
> +
> +static void
>  print_fileaccessinfo(uint8_t *sd, int type)
>  {
>          uint32_t access_flags;
> @@ -951,6 +1022,8 @@ int main(int argc, char *argv[])
>                  secdesc(f);
>          else if (!strcmp(argv[optind], "quota"))
>                  quota(f);
> +        else if (!strcmp(argv[1], "fsctl-getobjid"))
> +                fsctlgetobjid(f);
>          else {
>                  fprintf(stderr, "Unknown command %s\n", argv[optind]);
>                  exit(1);
> diff --git a/smbinfo.rst b/smbinfo.rst
> index 9bfd313..fd7f0ff 100644
> --- a/smbinfo.rst
> +++ b/smbinfo.rst
> @@ -62,6 +62,8 @@ COMMAND
>
>  `filestandardinfo`: Prints the FileStandardInformation class
>
> +`fsctl-getobjid`: Prints the ObjectID
> +
>  `quota`: Print the quota for the volume in the form
>  - SID Length
>  - Change Time
> --
> 2.13.6
>

Fixed spaces to tabs and applied. Thanks.

--
Best regards,
Pavel Shilovsky