You can view the fsap_info and fsdev_info data structures in the vxfsutil.h header file and libvxfsutil.a library file.

See the vxfsutil.h header file and libvxfsutil.a library file.

The data structures are provided here for quick reference:

#define FSAP_NAMESZ            64
#define FSAP_MAXDEVS            256
#define FSDEV_NAMESZ            32
struct fsap_info {              /* policy structure */
      char ap_name[FSAP_NAMESZ];/* policy name */
      uint32_t ap_flags;        /* FSAP_CREATE | FSAP_INHERIT |
                                    FSAP_ANYUSER */
      uint32_t ap_order;        /* FSAP_ORDER_ASGIVEN |
                                   FSAP_ORDER_LEASTFULL | 
                                   FSAP_ORDER_ROUNDROBIN */
      uint32_t ap_ndevs;        /* number of volumes */
      char ap_devs[FSAP_MAXDEVS][FSDEV_NAMESZ];
                                /* volume names associated with
                                               this policy */
};
struct fsdev_info {             /* volume structure */
      int dev_id;               /* a number from 0 to n */
      uint64_t dev_size;        /* size in bytes of volume */
      uint64_t dev_free;
      uint64_t dev_avail;
      char dev_name[FSDEV_NAMESZ];/* volume name */
};