include/uapi/linux/seccomp.h

   1 #ifndef _UAPI_LINUX_SECCOMP_H
   2 #define _UAPI_LINUX_SECCOMP_H
   3
   4 #include <linux/compiler.h>
   5 #include <linux/types.h>
   6
   7
   8 /* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, <mode>) */
   9 #define SECCOMP_MODE_DISABLED   0 /* seccomp is not in use. */
  10 #define SECCOMP_MODE_STRICT     1 /* uses hard-coded filter. */
  11 #define SECCOMP_MODE_FILTER     2 /* uses user-supplied filter. */
  12
  13 /*
  14  * All BPF programs must return a 32-bit value.
  15  * The bottom 16-bits are for optional return data.
  16  * The upper 16-bits are ordered from least permissive values to most.
  17  *
  18  * The ordering ensures that a min_t() over composed return values always
  19  * selects the least permissive choice.
  20  */
  21 #define SECCOMP_RET_KILL        0x00000000U /* kill the task immediately */
  22 #define SECCOMP_RET_TRAP        0x00030000U /* disallow and force a SIGSYS */
  23 #define SECCOMP_RET_ERRNO       0x00050000U /* returns an errno */
  24 #define SECCOMP_RET_TRACE       0x7ff00000U /* pass to a tracer or disallow */
  25 #define SECCOMP_RET_ALLOW       0x7fff0000U /* allow */
  26
  27 /* Masks for the return value sections. */
  28 #define SECCOMP_RET_ACTION      0x7fff0000U
  29 #define SECCOMP_RET_DATA        0x0000ffffU
  30
  31 /**
  32  * struct seccomp_data - the format the BPF program executes over.
  33  * @nr: the system call number
  34  * @arch: indicates system call convention as an AUDIT_ARCH_* value
  35  *        as defined in <linux/audit.h>.
  36  * @instruction_pointer: at the time of the system call.
  37  * @args: up to 6 system call arguments always stored as 64-bit values
  38  *        regardless of the architecture.
  39  */
  40 struct seccomp_data {
  41         int nr;
  42         __u32 arch;
  43         __u64 instruction_pointer;
  44         __u64 args[6];
  45 };
  46
  47 #endif /* _UAPI_LINUX_SECCOMP_H */