text: #include "defs.h"
  
  /* these constants are the same as in <linux/capability.h> */
  enum {
  #include "caps0.h"
  };
  
  #include "xlat/cap_mask0.h"
  
  /* these constants are CAP_TO_INDEX'ed constants from <linux/capability.h> */
  enum {
  #include "caps1.h"
  };
  
  #include "xlat/cap_mask1.h"
  
  /* these constants are the same as in <linux/capability.h> */
  enum {
  	_LINUX_CAPABILITY_VERSION_1 = 0x19980330,
  	_LINUX_CAPABILITY_VERSION_2 = 0x20071026,
  	_LINUX_CAPABILITY_VERSION_3 = 0x20080522
  };
  
  #include "xlat/cap_version.h"
  
  typedef struct user_cap_header_struct {
  	uint32_t version;
  	int pid;
  } *cap_user_header_t;
  
  typedef struct user_cap_data_struct {
  	uint32_t effective;
  	uint32_t permitted;
  	uint32_t inheritable;
  } *cap_user_data_t;
  
  static cap_user_header_t
  get_cap_header(struct tcb *tcp, unsigned long addr)
  {
  	static struct user_cap_header_struct header;
  
  	if (!addr || !verbose(tcp))
  		return NULL;
  
  	if (umove(tcp, addr, &header) < 0)
  		return NULL;
  
  	return &header;
  }
  
  static void
  print_cap_header(struct tcb *tcp, unsigned long addr, cap_user_header_t h)
  {
  	if (!addr) {
  		tprints("NULL");
  		return;
  	}
  
  	if (!h) {
  		tprintf("%#lx", addr);
  		return;
  	}
  
  	tprints("{");
  	printxval(cap_version, h->version,
  		  "_LINUX_CAPABILITY_VERSION_???");
  	tprintf(", %d}", h->pid);
  }
  
  static void
  print_cap_bits(const uint32_t lo, const uint32_t hi)
  {
  	if (lo || !hi)
  		printflags(cap_mask0, lo, "CAP_???");
  
  	if (hi) {
  		if (lo)
  			tprints("|");
  		printflags(cap_mask1, hi, "CAP_???");
  	}
  }
  
  static void
  print_cap_data(struct tcb *tcp, unsigned long addr, const cap_user_header_t h)
  {
  	struct user_cap_data_struct data[2];
  	unsigned int len;
  
  	if (!addr) {
  		tprints("NULL");
  		return;
  	}
  
  	if (!h || !verbose(tcp) ||
  	    (exiting(tcp) && syserror(tcp))) {
  		tprintf("%#lx", addr);
  		return;
  	}
  
  	if (_LINUX_CAPABILITY_VERSION_2 == h->version ||
  	    _LINUX_CAPABILITY_VERSION_3 == h->version)
  		len = 2;
  	else
  		len = 1;
  
  	if (umoven(tcp, addr, len * sizeof(data[0]), data) < 0) {
  		tprintf("%#lx", addr);
  		return;
  	}
  
  	tprints("{");
  	print_cap_bits(data[0].effective, len > 1 ? data[1].effective : 0);
  	tprints(", ");
  	print_cap_bits(data[0].permitted, len > 1 ? data[1].permitted : 0);
  	tprints(", ");
  	print_cap_bits(data[0].inheritable, len > 1 ? data[1].inheritable : 0);
  	tprints("}");
  }
  
  SYS_FUNC(capget)
  {
  	cap_user_header_t h;
  
  	if (entering(tcp)) {
  		h = get_cap_header(tcp, tcp->u_arg[0]);
  		print_cap_header(tcp, tcp->u_arg[0], h);
  		tprints(", ");
  	} else {
  		h = syserror(tcp) ? NULL : get_cap_header(tcp, tcp->u_arg[0]);
  		print_cap_data(tcp, tcp->u_arg[1], h);
  	}
  	return 0;
  }
  
  SYS_FUNC(capset)
  {
  	if (entering(tcp)) {
  		cap_user_header_t h = get_cap_header(tcp, tcp->u_arg[0]);
  		print_cap_header(tcp, tcp->u_arg[0], h);
  		tprints(", ");
  		print_cap_data(tcp, tcp->u_arg[1], h);
  	}
  	return 0;
  }
  