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 /* Valid operations for seccomp syscall. */ 14 #define SECCOMP_SET_MODE_STRICT 0 15 #define SECCOMP_SET_MODE_FILTER 1 16 #define SECCOMP_GET_ACTION_AVAIL 2 17 18 /* Valid flags for SECCOMP_SET_MODE_FILTER */ 19 #define SECCOMP_FILTER_FLAG_TSYNC 1 20 21 /* 22 * All BPF programs must return a 32-bit value. 23 * The bottom 16-bits are for optional return data. 24 * The upper 16-bits are ordered from least permissive values to most. 25 * 26 * The ordering ensures that a min_t() over composed return values always 27 * selects the least permissive choice. 28 */ 29 #define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */ 30 #define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */ 31 #define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */ 32 #define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */ 33 #define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */ 34 35 /* Masks for the return value sections. */ 36 #define SECCOMP_RET_ACTION 0x7fff0000U 37 #define SECCOMP_RET_DATA 0x0000ffffU 38 39 /** 40 * struct seccomp_data - the format the BPF program executes over. 41 * @nr: the system call number 42 * @arch: indicates system call convention as an AUDIT_ARCH_* value 43 * as defined in <linux/audit.h>. 44 * @instruction_pointer: at the time of the system call. 45 * @args: up to 6 system call arguments always stored as 64-bit values 46 * regardless of the architecture. 47 */ 48 struct seccomp_data { 49 int nr; 50 __u32 arch; 51 __u64 instruction_pointer; 52 __u64 args[6]; 53 }; 54 55 #endif /* _UAPI_LINUX_SECCOMP_H */ 56