1# This file is used to populate seccomp's allowlist policy in combination with SYSCALLS.TXT. 2# Note that the resultant policy is applied only to zygote spawned processes. 3# 4# The final seccomp allowlist is SYSCALLS.TXT - SECCOMP_BLOCKLIST.TXT + SECCOMP_ALLOWLIST.TXT 5# Any entry in the blocklist must be in the syscalls file and not be in the allowlist file 6# 7# This file is processed by a python script named genseccomp.py. 8 9# Syscalls to modify IDs. 10# Note: Some privileged syscalls are still needed in app_process after fork but 11# before uid change, including capset and setresuid. This is because the seccomp 12# filter must be installed while the process still has CAP_SYS_ADMIN; changing 13# the uid would remove that capability. 14setgid32(gid_t) lp32 15setgid(gid_t) lp64 16setuid32(uid_t) lp32 17setuid(uid_t) lp64 18setregid32(gid_t, gid_t) lp32 19setregid(gid_t, gid_t) lp64 20setreuid32(uid_t, uid_t) lp32 21setreuid(uid_t, uid_t) lp64 22setresgid32(gid_t, gid_t, gid_t) lp32 23setresgid(gid_t, gid_t, gid_t) lp64 24# setresuid is explicitly allowed, see above. 25setfsgid32(gid_t) lp32 26setfsgid(gid_t) lp64 27setfsuid32(uid_t) lp32 28setfsuid(uid_t) lp64 29setgroups32(int, const gid_t*) lp32 30setgroups(int, const gid_t*) lp64 31 32# Syscalls to modify times. 33adjtimex(struct timex*) all 34clock_adjtime(clockid_t, struct timex*) all 35clock_settime(clockid_t, const struct timespec*) all 36settimeofday(const struct timeval*, const struct timezone*) all 37 38acct(const char* filepath) all 39syslog(int, char*, int) all 40chroot(const char*) all 41 42init_module(void*, unsigned long, const char*) all 43delete_module(const char*, unsigned int) all 44mount(const char*, const char*, const char*, unsigned long, const void*) all 45umount2(const char*, int) all 46swapon(const char*, int) all 47swapoff(const char*) all 48setdomainname(const char*, size_t) all 49sethostname(const char*, size_t) all 50reboot(int, int, int, void*) all 51