1 #ifndef _LINUX_SECCOMP_H 2 #define _LINUX_SECCOMP_H 3 4 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 0xffff0000U 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 /* _LINUX_SECCOMP_H */ 48
