1 # This file is used to populate seccomp's whitelist policy in combination with SYSCALLS.TXT. 2 # Note that the resultant policy is applied only to zygote spawned processes. 3 # 4 # Each non-blank, non-comment line has the following format: 5 # 6 # return_type func_name[|alias_list][:syscall_name[:socketcall_id]]([parameter_list]) arch_list 7 # 8 # where: 9 # arch_list ::= "all" | arch+ 10 # arch ::= "arm" | "arm64" | "mips" | "mips64" | "x86" | "x86_64" 11 # 12 # Note: 13 # - syscall_name corresponds to the name of the syscall, which may differ from 14 # the exported function name (example: the exit syscall is implemented by the _exit() 15 # function, which is not the same as the standard C exit() function which calls it) 16 17 # - alias_list is optional comma separated list of function aliases 18 # 19 # - The call_id parameter, given that func_name and syscall_name have 20 # been provided, allows the user to specify dispatch style syscalls. 21 # For example, socket() syscall on i386 actually becomes: 22 # socketcall(__NR_socket, 1, *(rest of args on stack)). 23 # 24 # - Each parameter type is assumed to be stored in 32 bits. 25 # 26 # This file is processed by a python script named genseccomp.py. 27 28 # syscalls needed to boot android 29 int pivot_root:pivot_root(const char *new_root, const char *put_old) arm64,x86_64,mips64 30 int ioprio_get:ioprio_get(int which, int who) arm64,x86_64,mips64 31 int ioprio_set:ioprio_set(int which, int who, int ioprio) arm64,x86_64,mips64 32 pid_t gettid:gettid() all 33 int futex:futex(int *uaddr, int futex_op, int val, const struct timespec *timeout, int *uaddr2, int val3) all 34 int clone:clone(int (*fn)(void *), void *child_stack, int flags, void *arg, ..) all 35 int rt_sigreturn:rt_sigreturn(unsigned long __unused) all 36 int rt_tgsigqueueinfo:int rt_tgsigqueueinfo(pid_t tgid, pid_t tid, int sig, siginfo_t *uinfo) all 37 int restart_syscall:int restart_syscall() all 38 int fstatat64|fstatat:newfstatat(int, const char*, struct stat*, int) mips64 39 int fstat64|fstat:fstat(int, struct stat*) mips64 40 int _flush_cache:cacheflush(char* addr, const int nbytes, const int op) mips64 41 42 # vfork is used by java.lang.ProcessBuilder 43 pid_t vfork:vfork() arm,x86,x86_64 44 45 # Needed for performance tools 46 int perf_event_open:perf_event_open(struct perf_event_attr *attr, pid_t pid, int cpu, int group_fd, unsigned long flags) all 47 48 # Needed for strace 49 int tkill:tkill(int tid, int sig) all 50 51 # b/34763393 52 int seccomp:seccomp(unsigned int operation, unsigned int flags, void *args) all 53 54 # Needed for debugging 32-bit Chrome 55 int pipe:pipe(int pipefd[2]) arm,x86,mips 56 57 # b/34813887 58 int open:open(const char *path, int oflag, ... ) arm,x86,x86_64,mips 59 int getdents:getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count) arm,x86,x86_64,mips 60 61 # syscalls needed to boot android 62 int sigreturn:sigreturn(unsigned long __unused) arm,x86,mips 63 64 # Needed by sanitizers (b/34606909) 65 # 5 (__NR_open) and 195 (__NR_stat64) are also required, but they are 66 # already allowed. 67 ssize_t readlink:readlink(const char *path, char *buf, size_t bufsiz) arm,x86,x86_64,mips 68 69 # Probed for and conditionally used by ART. 70 int membarrier(int cmd, int flags) all 71 72 # Useful new syscalls which we don't yet use in bionic. 73 int sched_getattr(pid_t pid, struct sched_attr* attr, unsigned int flags) all 74 int sched_setattr(pid_t pid, struct sched_attr* attr, unsigned int size, unsigned int flags) all 75 int memfd_create(const char* name, unsigned int flags) all 76 int renameat2(int olddirfd, const char* oldpath, int newdirfd, const char* newpath, unsigned int flags) all 77 int execveat(int dirfd, const char* pathname, char* const* argv, char* const* envp, int flags) all 78 ssize_t copy_file_range(int fd_in, loff_t* off_in, int fd_out, loff_t* off_out, size_t len, unsigned int flags) all 79 int mlock2(const void* addr, size_t len, int flags) all 80 ssize_t preadv2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 81 ssize_t pwritev2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 82 int io_setup(unsigned nr, aio_context_t *ctxp) all 83 int io_destroy(aio_context_t ctx) all 84 int io_submit(aio_context_t ctx, long nr, struct iocb **iocbpp) all 85 int io_getevents(aio_context_t ctx, long min_nr, long max_nr, struct io_event *events, struct timespec *timeout) all 86 int io_cancel(aio_context_t ctx, struct iocb *, struct io_event *result) all 87
