/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_SECCOMP_H #define _LINUX_SECCOMP_H #include /* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, ) */ #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 #define SECCOMP_GET_ACTION_AVAIL 2 /* Valid flags for SECCOMP_SET_MODE_FILTER */ #define SECCOMP_FILTER_FLAG_TSYNC (1UL << 0) #define SECCOMP_FILTER_FLAG_LOG (1UL << 1) #define SECCOMP_FILTER_FLAG_SPEC_ALLOW (1UL << 2) /* * 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, * as a signed value (so 0x8000000 is negative). * * The ordering ensures that a min_t() over composed return values always * selects the least permissive choice. */ #define SECCOMP_RET_KILL_PROCESS 0x80000000U /* kill the process */ #define SECCOMP_RET_KILL_THREAD 0x00000000U /* kill the thread */ #define SECCOMP_RET_KILL SECCOMP_RET_KILL_THREAD #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_LOG 0x7ffc0000U /* allow after logging */ #define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */ /* Masks for the return value sections. */ #define SECCOMP_RET_ACTION_FULL 0xffff0000U #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 . * @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 /* _LINUX_SECCOMP_H */