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 29int pivot_root:pivot_root(const char *new_root, const char *put_old) arm64,x86_64,mips64 30int ioprio_get:ioprio_get(int which, int who) arm64,x86_64,mips64 31int ioprio_set:ioprio_set(int which, int who, int ioprio) arm64,x86_64,mips64 32pid_t gettid:gettid() all 33int futex:futex(int *uaddr, int futex_op, int val, const struct timespec *timeout, int *uaddr2, int val3) all 34int clone:clone(int (*fn)(void *), void *child_stack, int flags, void *arg, ..) all 35int rt_sigreturn:rt_sigreturn(unsigned long __unused) all 36int rt_tgsigqueueinfo:int rt_tgsigqueueinfo(pid_t tgid, pid_t tid, int sig, siginfo_t *uinfo) all 37int restart_syscall:int restart_syscall() all 38int fstatat64|fstatat:newfstatat(int, const char*, struct stat*, int) mips64 39int fstat64|fstat:fstat(int, struct stat*) mips64 40int _flush_cache:cacheflush(char* addr, const int nbytes, const int op) mips64 41 42# vfork is used by java.lang.ProcessBuilder 43pid_t vfork:vfork() arm,x86,x86_64 44 45# Needed for performance tools 46int 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 49int tkill:tkill(int tid, int sig) all 50 51# b/34763393 52int seccomp:seccomp(unsigned int operation, unsigned int flags, void *args) all 53 54# Needed for debugging 32-bit Chrome 55int pipe:pipe(int pipefd[2]) arm,x86,mips 56 57# b/34813887 58int open:open(const char *path, int oflag, ... ) arm,x86,x86_64,mips 59int getdents:getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count) arm,x86,x86_64,mips 60 61# syscalls needed to boot android 62int 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. 67ssize_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. 70int membarrier(int cmd, int flags) all 71 72# Useful new syscalls which we don't yet use in bionic. 73int sched_getattr(pid_t pid, struct sched_attr* attr, unsigned int flags) all 74int sched_setattr(pid_t pid, struct sched_attr* attr, unsigned int size, unsigned int flags) all 75int memfd_create(const char* name, unsigned int flags) all 76int renameat2(int olddirfd, const char* oldpath, int newdirfd, const char* newpath, unsigned int flags) all 77int execveat(int dirfd, const char* pathname, char* const* argv, char* const* envp, int flags) all 78ssize_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 79int mlock2(const void* addr, size_t len, int flags) all 80ssize_t preadv2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 81ssize_t pwritev2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 82int io_setup(unsigned nr, aio_context_t *ctxp) all 83int io_destroy(aio_context_t ctx) all 84int io_submit(aio_context_t ctx, long nr, struct iocb **iocbpp) all 85int io_getevents(aio_context_t ctx, long min_nr, long max_nr, struct io_event *events, struct timespec *timeout) all 86int io_cancel(aio_context_t ctx, struct iocb *, struct io_event *result) all 87