| # This file is used to populate seccomp's whitelist policy in combination with SYSCALLS.TXT. |
| # Note that the resultant policy is applied only to zygote spawned processes. |
| # |
| # The final seccomp whitelist is SYSCALLS.TXT - SECCOMP_BLACKLIST.TXT + SECCOMP_WHITELIST.TXT |
| # Any entry in the blacklist must be in the syscalls file and not be in the whitelist file |
| # |
| # Each non-blank, non-comment line has the following format: |
| # |
| # return_type func_name[|alias_list][:syscall_name[:socketcall_id]]([parameter_list]) arch_list |
| # |
| # where: |
| # arch_list ::= "all" | arch+ |
| # arch ::= "arm" | "arm64" | "mips" | "mips64" | "x86" | "x86_64" |
| # |
| # Note: |
| # - syscall_name corresponds to the name of the syscall, which may differ from |
| # the exported function name (example: the exit syscall is implemented by the _exit() |
| # function, which is not the same as the standard C exit() function which calls it) |
| |
| # - alias_list is optional comma separated list of function aliases |
| # |
| # - The call_id parameter, given that func_name and syscall_name have |
| # been provided, allows the user to specify dispatch style syscalls. |
| # For example, socket() syscall on i386 actually becomes: |
| # socketcall(__NR_socket, 1, *(rest of args on stack)). |
| # |
| # - Each parameter type is assumed to be stored in 32 bits. |
| # |
| # This file is processed by a python script named genseccomp.py. |
| |
| # Note: Some privileged syscalls are still needed in app process after fork before uid change, |
| # including capset and setresuid. This is because the seccomp filter must be installed while |
| # the process still has CAP_SYS_ADMIN; changing the uid would remove that capability. |
| |
| # syscalls to modify IDs |
| int setgid:setgid32(gid_t) arm,x86 |
| int setgid:setgid(gid_t) arm64,mips,mips64,x86_64 |
| int setuid:setuid32(uid_t) arm,x86 |
| int setuid:setuid(uid_t) arm64,mips,mips64,x86_64 |
| int setregid:setregid32(gid_t, gid_t) arm,x86 |
| int setregid:setregid(gid_t, gid_t) arm64,mips,mips64,x86_64 |
| int setreuid:setreuid32(uid_t, uid_t) arm,x86 |
| int setreuid:setreuid(uid_t, uid_t) arm64,mips,mips64,x86_64 |
| int setresgid:setresgid32(gid_t, gid_t, gid_t) arm,x86 |
| int setresgid:setresgid(gid_t, gid_t, gid_t) arm64,mips,mips64,x86_64 |
| # setresuid is explicitly allowed, see above. |
| int setfsgid(gid_t) all |
| int setfsuid(uid_t) all |
| int setgroups:setgroups32(int, const gid_t*) arm,x86 |
| int setgroups:setgroups(int, const gid_t*) arm64,mips,mips64,x86_64 |
| |
| # syscalls to modify times |
| int adjtimex(struct timex*) all |
| int clock_adjtime(clockid_t, struct timex*) all |
| int clock_settime(clockid_t, const struct timespec*) all |
| int settimeofday(const struct timeval*, const struct timezone*) all |
| |
| int acct(const char* filepath) all |
| int klogctl:syslog(int, char*, int) all |
| int chroot(const char*) all |
| |
| # syscalls to change machine various configurations |
| int init_module(void*, unsigned long, const char*) all |
| int delete_module(const char*, unsigned int) all |
| int mount(const char*, const char*, const char*, unsigned long, const void*) all |
| int umount2(const char*, int) all |
| int swapon(const char*, int) all |
| int swapoff(const char*) all |
| int setdomainname(const char*, size_t) all |
| int sethostname(const char*, size_t) all |
| int __reboot:reboot(int, int, int, void*) all |