text: #ifndef _UAPI_LINUX_SECCOMP_H
  #define _UAPI_LINUX_SECCOMP_H
  
  #include <linux/compiler.h>
  #include <linux/types.h>
  
  
  /* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, <mode>) */
  #define SECCOMP_MODE_DISABLED	0 /* seccomp is not in use. */
  #define SECCOMP_MODE_STRICT	1 /* uses hard-coded filter. */
  #define SECCOMP_MODE_FILTER	2 /* uses user-supplied filter. */
  
  /* Valid operations for seccomp syscall. */
  #define SECCOMP_SET_MODE_STRICT	0
  #define SECCOMP_SET_MODE_FILTER	1
  
  /* Valid flags for SECCOMP_SET_MODE_FILTER */
  #define SECCOMP_FILTER_FLAG_TSYNC	1
  
  /*
   * All BPF programs must return a 32-bit value.
   * The bottom 16-bits are for optional return data.
   * The upper 16-bits are ordered from least permissive values to most.
   *
   * The ordering ensures that a min_t() over composed return values always
   * selects the least permissive choice.
   */
  #define SECCOMP_RET_KILL	0x00000000U /* kill the task immediately */
  #define SECCOMP_RET_TRAP	0x00030000U /* disallow and force a SIGSYS */
  #define SECCOMP_RET_ERRNO	0x00050000U /* returns an errno */
  #define SECCOMP_RET_TRACE	0x7ff00000U /* pass to a tracer or disallow */
  #define SECCOMP_RET_ALLOW	0x7fff0000U /* allow */
  
  /* Masks for the return value sections. */
  #define SECCOMP_RET_ACTION	0x7fff0000U
  #define SECCOMP_RET_DATA	0x0000ffffU
  
  /**
   * struct seccomp_data - the format the BPF program executes over.
   * @nr: the system call number
   * @arch: indicates system call convention as an AUDIT_ARCH_* value
   *        as defined in <linux/audit.h>.
   * @instruction_pointer: at the time of the system call.
   * @args: up to 6 system call arguments always stored as 64-bit values
   *        regardless of the architecture.
   */
  struct seccomp_data {
  	int nr;
  	__u32 arch;
  	__u64 instruction_pointer;
  	__u64 args[6];
  };
  
  #endif /* _UAPI_LINUX_SECCOMP_H */
  