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 gensyscalls.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 getrandom:int getrandom(void *buf, size_t buflen, unsigned int flags) all 39 40 # Needed for performance tools 41 int perf_event_open:perf_event_open(struct perf_event_attr *attr, pid_t pid, int cpu, int group_fd, unsigned long flags) all 42 43 # Needed for strace 44 int tkill:tkill(int tid, int sig) all 45 46 # b/35034743 47 int syncfs:syncfs(int fd) all 48 49 # b/34763393 50 int seccomp:seccomp(unsigned int operation, unsigned int flags, void *args) all 51 52 # syscalls needed to boot android 53 int sigreturn:sigreturn(unsigned long __unused) arm,x86,mips 54 55 # Syscalls needed to run GFXBenchmark 56 pid_t vfork:vfork() arm,x86,x86_64 57 58 # Needed for debugging 32-bit Chrome 59 int pipe:pipe(int pipefd[2]) arm,x86,mips 60 61 # b/34651972 62 int access:access(const char *pathname, int mode) arm,x86,mips 63 int stat64:stat64(const char *restrict path, struct stat64 *restrict buf) arm,x86,mips 64 65 # b/34813887 66 int open:open(const char *path, int oflag, ... ) arm,x86,mips 67 int getdents:getdents(unsigned int fd, struct linux_dirent *dirp, unsigned int count) arm,x86,mips 68 69 # b/34719286 70 int eventfd:eventfd(unsigned int initval, int flags) arm,x86,mips 71 72 # b/34817266 73 int epoll_wait:epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout) arm,x86,mips 74 75 # Needed by sanitizers (b/34606909) 76 # 5 (__NR_open) and 195 (__NR_stat64) are also required, but they are 77 # already allowed. 78 ssize_t readlink:readlink(const char *path, char *buf, size_t bufsiz) arm,x86,mips 79 80 # b/34908783 81 int epoll_create:epoll_create(int size) arm,x86,mips 82 83 # b/34979910 84 int creat:creat(const char *pathname, mode_t mode) arm,x86,mips 85 int unlink:unlink(const char *pathname) arm,x86,mips 86 87 # b/35059702 88 int lstat64:lstat64(const char *restrict path, struct stat64 *restrict buf) arm,x86,mips 89 90 # b/35217603 91 int fcntl:fcntl(int fd, int cmd, ... /* arg */ ) arm,x86,mips 92 pid_t fork:fork() arm,x86,mips 93 int poll:poll(struct pollfd *fds, nfds_t nfds, int timeout) arm,x86,mips 94 95 # b/35906875. Note mips already has getuid from SYSCALLS.TXT 96 int inotify_init() arm,x86,mips 97 uid_t getuid() arm,x86 98 99 # b/36435222 100 int remap_file_pages(void *addr, size_t size, int prot, size_t pgoff, int flags) arm,x86,mips 101 102 # b/36449658 103 int rename(const char *oldpath, const char *newpath) arm,x86,mips 104 105 # b/36726183. Note arm does not support mmap 106 void* mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) x86,mips 107 108 # Useful new syscalls which we don't yet use in bionic. 109 int sched_getattr(pid_t pid, struct sched_attr* attr, unsigned int flags) all 110 int sched_setattr(pid_t pid, struct sched_attr* attr, unsigned int size, unsigned int flags) all 111 int memfd_create(const char* name, unsigned int flags) all 112 int renameat2(int olddirfd, const char* oldpath, int newdirfd, const char* newpath, unsigned int flags) all 113 int execveat(int dirfd, const char* pathname, char* const* argv, char* const* envp, int flags) all 114 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 115 int mlock2(const void* addr, size_t len, int flags) all 116 ssize_t preadv2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 117 ssize_t pwritev2(int fd, const struct iovec* iov, int iovcnt, off_t offset, int flags) all 118 119 # b/37769298 120 int dup2(int oldfd, int newfd) arm,x86,mips 121 122 # b/62779795 123 int compat_select:_newselect(int n, unsigned long* inp, unsigned long* outp, unsigned long* exp, struct timeval* timeout) arm,x86,mips 124 125 # b/62090571 126 int mkdir(const char *pathname, mode_t mode) arm,x86,mips
