* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
-#include <stdio.h>
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/config-file.h"
+#include "qemu/option.h"
+#include "qemu/module.h"
+#include <sys/prctl.h>
#include <seccomp.h>
#include "sysemu/seccomp.h"
+#include <linux/seccomp.h>
+
+/* For some architectures (notably ARM) cacheflush is not supported until
+ * libseccomp 2.2.3, but configure enforces that we are using a more recent
+ * version on those hosts, so it is OK for this check to be less strict.
+ */
+#if SCMP_VER_MAJOR >= 3
+ #define HAVE_CACHEFLUSH
+#elif SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR >= 2
+ #define HAVE_CACHEFLUSH
+#endif
struct QemuSeccompSyscall {
int32_t num;
- uint8_t priority;
+ uint8_t set;
+ uint8_t narg;
+ const struct scmp_arg_cmp *arg_cmp;
};
-static const struct QemuSeccompSyscall seccomp_whitelist[] = {
- { SCMP_SYS(timer_settime), 255 },
- { SCMP_SYS(timer_gettime), 254 },
- { SCMP_SYS(futex), 253 },
- { SCMP_SYS(select), 252 },
- { SCMP_SYS(recvfrom), 251 },
- { SCMP_SYS(sendto), 250 },
- { SCMP_SYS(socketcall), 250 },
- { SCMP_SYS(read), 249 },
- { SCMP_SYS(io_submit), 249 },
- { SCMP_SYS(brk), 248 },
- { SCMP_SYS(clone), 247 },
- { SCMP_SYS(mmap), 247 },
- { SCMP_SYS(mprotect), 246 },
- { SCMP_SYS(execve), 245 },
- { SCMP_SYS(open), 245 },
- { SCMP_SYS(ioctl), 245 },
- { SCMP_SYS(socket), 245 },
- { SCMP_SYS(setsockopt), 245 },
- { SCMP_SYS(recvmsg), 245 },
- { SCMP_SYS(sendmsg), 245 },
- { SCMP_SYS(accept), 245 },
- { SCMP_SYS(connect), 245 },
- { SCMP_SYS(socketpair), 245 },
- { SCMP_SYS(bind), 245 },
- { SCMP_SYS(listen), 245 },
- { SCMP_SYS(semget), 245 },
- { SCMP_SYS(ipc), 245 },
- { SCMP_SYS(gettimeofday), 245 },
- { SCMP_SYS(readlink), 245 },
- { SCMP_SYS(access), 245 },
- { SCMP_SYS(prctl), 245 },
- { SCMP_SYS(signalfd), 245 },
- { SCMP_SYS(getrlimit), 245 },
- { SCMP_SYS(set_tid_address), 245 },
- { SCMP_SYS(statfs), 245 },
- { SCMP_SYS(unlink), 245 },
- { SCMP_SYS(wait4), 245 },
- { SCMP_SYS(fcntl64), 245 },
- { SCMP_SYS(fstat64), 245 },
- { SCMP_SYS(stat64), 245 },
- { SCMP_SYS(getgid32), 245 },
- { SCMP_SYS(getegid32), 245 },
- { SCMP_SYS(getuid32), 245 },
- { SCMP_SYS(geteuid32), 245 },
- { SCMP_SYS(sigreturn), 245 },
- { SCMP_SYS(_newselect), 245 },
- { SCMP_SYS(_llseek), 245 },
- { SCMP_SYS(mmap2), 245 },
- { SCMP_SYS(sigprocmask), 245 },
- { SCMP_SYS(sched_getparam), 245 },
- { SCMP_SYS(sched_getscheduler), 245 },
- { SCMP_SYS(fstat), 245 },
- { SCMP_SYS(clock_getres), 245 },
- { SCMP_SYS(sched_get_priority_min), 245 },
- { SCMP_SYS(sched_get_priority_max), 245 },
- { SCMP_SYS(stat), 245 },
- { SCMP_SYS(uname), 245 },
- { SCMP_SYS(eventfd2), 245 },
- { SCMP_SYS(io_getevents), 245 },
- { SCMP_SYS(dup), 245 },
- { SCMP_SYS(dup2), 245 },
- { SCMP_SYS(dup3), 245 },
- { SCMP_SYS(gettid), 245 },
- { SCMP_SYS(getgid), 245 },
- { SCMP_SYS(getegid), 245 },
- { SCMP_SYS(getuid), 245 },
- { SCMP_SYS(geteuid), 245 },
- { SCMP_SYS(timer_create), 245 },
- { SCMP_SYS(times), 245 },
- { SCMP_SYS(exit), 245 },
- { SCMP_SYS(clock_gettime), 245 },
- { SCMP_SYS(time), 245 },
- { SCMP_SYS(restart_syscall), 245 },
- { SCMP_SYS(pwrite64), 245 },
- { SCMP_SYS(nanosleep), 245 },
- { SCMP_SYS(chown), 245 },
- { SCMP_SYS(openat), 245 },
- { SCMP_SYS(getdents), 245 },
- { SCMP_SYS(timer_delete), 245 },
- { SCMP_SYS(exit_group), 245 },
- { SCMP_SYS(rt_sigreturn), 245 },
- { SCMP_SYS(sync), 245 },
- { SCMP_SYS(pread64), 245 },
- { SCMP_SYS(madvise), 245 },
- { SCMP_SYS(set_robust_list), 245 },
- { SCMP_SYS(lseek), 245 },
- { SCMP_SYS(pselect6), 245 },
- { SCMP_SYS(fork), 245 },
- { SCMP_SYS(rt_sigprocmask), 245 },
- { SCMP_SYS(write), 244 },
- { SCMP_SYS(fcntl), 243 },
- { SCMP_SYS(tgkill), 242 },
- { SCMP_SYS(kill), 242 },
- { SCMP_SYS(rt_sigaction), 242 },
- { SCMP_SYS(pipe2), 242 },
- { SCMP_SYS(munmap), 242 },
- { SCMP_SYS(mremap), 242 },
- { SCMP_SYS(fdatasync), 242 },
- { SCMP_SYS(close), 242 },
- { SCMP_SYS(rt_sigpending), 242 },
- { SCMP_SYS(rt_sigtimedwait), 242 },
- { SCMP_SYS(readv), 242 },
- { SCMP_SYS(writev), 242 },
- { SCMP_SYS(preadv), 242 },
- { SCMP_SYS(pwritev), 242 },
- { SCMP_SYS(setrlimit), 242 },
- { SCMP_SYS(ftruncate), 242 },
- { SCMP_SYS(lstat), 242 },
- { SCMP_SYS(pipe), 242 },
- { SCMP_SYS(umask), 242 },
- { SCMP_SYS(chdir), 242 },
- { SCMP_SYS(setitimer), 242 },
- { SCMP_SYS(setsid), 242 },
- { SCMP_SYS(poll), 242 },
- { SCMP_SYS(epoll_create), 242 },
- { SCMP_SYS(epoll_ctl), 242 },
- { SCMP_SYS(epoll_wait), 242 },
- { SCMP_SYS(waitpid), 242 },
- { SCMP_SYS(getsockname), 242 },
- { SCMP_SYS(getpeername), 242 },
- { SCMP_SYS(accept4), 242 },
- { SCMP_SYS(timerfd_settime), 242 },
- { SCMP_SYS(newfstatat), 241 },
- { SCMP_SYS(shutdown), 241 },
- { SCMP_SYS(getsockopt), 241 },
- { SCMP_SYS(semop), 241 },
- { SCMP_SYS(semtimedop), 241 },
- { SCMP_SYS(epoll_ctl_old), 241 },
- { SCMP_SYS(epoll_wait_old), 241 },
- { SCMP_SYS(epoll_pwait), 241 },
- { SCMP_SYS(epoll_create1), 241 },
- { SCMP_SYS(ppoll), 241 },
- { SCMP_SYS(creat), 241 },
- { SCMP_SYS(link), 241 },
- { SCMP_SYS(getpid), 241 },
- { SCMP_SYS(getppid), 241 },
- { SCMP_SYS(getpgrp), 241 },
- { SCMP_SYS(getpgid), 241 },
- { SCMP_SYS(getsid), 241 },
- { SCMP_SYS(getdents64), 241 },
- { SCMP_SYS(getresuid), 241 },
- { SCMP_SYS(getresgid), 241 },
- { SCMP_SYS(getgroups), 241 },
- { SCMP_SYS(getresuid32), 241 },
- { SCMP_SYS(getresgid32), 241 },
- { SCMP_SYS(getgroups32), 241 },
- { SCMP_SYS(signal), 241 },
- { SCMP_SYS(sigaction), 241 },
- { SCMP_SYS(sigsuspend), 241 },
- { SCMP_SYS(sigpending), 241 },
- { SCMP_SYS(truncate64), 241 },
- { SCMP_SYS(ftruncate64), 241 },
- { SCMP_SYS(fchown32), 241 },
- { SCMP_SYS(chown32), 241 },
- { SCMP_SYS(lchown32), 241 },
- { SCMP_SYS(statfs64), 241 },
- { SCMP_SYS(fstatfs64), 241 },
- { SCMP_SYS(fstatat64), 241 },
- { SCMP_SYS(lstat64), 241 },
- { SCMP_SYS(sendfile64), 241 },
- { SCMP_SYS(ugetrlimit), 241 },
- { SCMP_SYS(alarm), 241 },
- { SCMP_SYS(rt_sigsuspend), 241 },
- { SCMP_SYS(rt_sigqueueinfo), 241 },
- { SCMP_SYS(rt_tgsigqueueinfo), 241 },
- { SCMP_SYS(sigaltstack), 241 },
- { SCMP_SYS(signalfd4), 241 },
- { SCMP_SYS(truncate), 241 },
- { SCMP_SYS(fchown), 241 },
- { SCMP_SYS(lchown), 241 },
- { SCMP_SYS(fchownat), 241 },
- { SCMP_SYS(fstatfs), 241 },
- { SCMP_SYS(getitimer), 241 },
- { SCMP_SYS(syncfs), 241 },
- { SCMP_SYS(fsync), 241 },
- { SCMP_SYS(fchdir), 241 },
- { SCMP_SYS(msync), 241 },
- { SCMP_SYS(sched_setparam), 241 },
- { SCMP_SYS(sched_setscheduler), 241 },
- { SCMP_SYS(sched_yield), 241 },
- { SCMP_SYS(sched_rr_get_interval), 241 },
- { SCMP_SYS(sched_setaffinity), 241 },
- { SCMP_SYS(sched_getaffinity), 241 },
- { SCMP_SYS(readahead), 241 },
- { SCMP_SYS(timer_getoverrun), 241 },
- { SCMP_SYS(unlinkat), 241 },
- { SCMP_SYS(readlinkat), 241 },
- { SCMP_SYS(faccessat), 241 },
- { SCMP_SYS(get_robust_list), 241 },
- { SCMP_SYS(splice), 241 },
- { SCMP_SYS(vmsplice), 241 },
- { SCMP_SYS(getcpu), 241 },
- { SCMP_SYS(sendmmsg), 241 },
- { SCMP_SYS(recvmmsg), 241 },
- { SCMP_SYS(prlimit64), 241 },
- { SCMP_SYS(waitid), 241 },
- { SCMP_SYS(io_cancel), 241 },
- { SCMP_SYS(io_setup), 241 },
- { SCMP_SYS(io_destroy), 241 },
- { SCMP_SYS(arch_prctl), 240 },
- { SCMP_SYS(mkdir), 240 },
- { SCMP_SYS(fchmod), 240 },
- { SCMP_SYS(shmget), 240 },
- { SCMP_SYS(shmat), 240 },
- { SCMP_SYS(shmdt), 240 },
- { SCMP_SYS(timerfd_create), 240 },
- { SCMP_SYS(shmctl), 240 },
- { SCMP_SYS(mlockall), 240 },
- { SCMP_SYS(mlock), 240 },
- { SCMP_SYS(munlock), 240 },
- { SCMP_SYS(semctl), 240 },
- { SCMP_SYS(fallocate), 240 },
- { SCMP_SYS(fadvise64), 240 },
- { SCMP_SYS(inotify_init1), 240 },
- { SCMP_SYS(inotify_add_watch), 240 },
- { SCMP_SYS(mbind), 240 },
- { SCMP_SYS(memfd_create), 240 }
+const struct scmp_arg_cmp sched_setscheduler_arg[] = {
+ /* was SCMP_A1(SCMP_CMP_NE, SCHED_IDLE), but expanded due to GCC 4.x bug */
+ { .arg = 1, .op = SCMP_CMP_NE, .datum_a = SCHED_IDLE }
};
-int seccomp_start(void)
+static const struct QemuSeccompSyscall blacklist[] = {
+ /* default set of syscalls to blacklist */
+ { SCMP_SYS(reboot), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(swapon), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(swapoff), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(syslog), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(mount), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(umount), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(kexec_load), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(afs_syscall), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(break), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(ftime), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(getpmsg), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(gtty), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(lock), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(mpx), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(prof), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(profil), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(putpmsg), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(security), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(stty), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(tuxcall), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(ulimit), QEMU_SECCOMP_SET_DEFAULT },
+ { SCMP_SYS(vserver), QEMU_SECCOMP_SET_DEFAULT },
+ /* obsolete */
+ { SCMP_SYS(readdir), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(_sysctl), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(bdflush), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(create_module), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(get_kernel_syms), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(query_module), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(sgetmask), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(ssetmask), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(sysfs), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(uselib), QEMU_SECCOMP_SET_OBSOLETE },
+ { SCMP_SYS(ustat), QEMU_SECCOMP_SET_OBSOLETE },
+ /* privileged */
+ { SCMP_SYS(setuid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setgid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setpgid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setsid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setreuid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setregid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setresuid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setresgid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setfsuid), QEMU_SECCOMP_SET_PRIVILEGED },
+ { SCMP_SYS(setfsgid), QEMU_SECCOMP_SET_PRIVILEGED },
+ /* spawn */
+ { SCMP_SYS(fork), QEMU_SECCOMP_SET_SPAWN },
+ { SCMP_SYS(vfork), QEMU_SECCOMP_SET_SPAWN },
+ { SCMP_SYS(execve), QEMU_SECCOMP_SET_SPAWN },
+ /* resource control */
+ { SCMP_SYS(getpriority), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(setpriority), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_setparam), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_getparam), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_setscheduler), QEMU_SECCOMP_SET_RESOURCECTL,
+ ARRAY_SIZE(sched_setscheduler_arg), sched_setscheduler_arg },
+ { SCMP_SYS(sched_getscheduler), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_setaffinity), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_getaffinity), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_get_priority_max), QEMU_SECCOMP_SET_RESOURCECTL },
+ { SCMP_SYS(sched_get_priority_min), QEMU_SECCOMP_SET_RESOURCECTL },
+};
+
+static inline __attribute__((unused)) int
+qemu_seccomp(unsigned int operation, unsigned int flags, void *args)
+{
+#ifdef __NR_seccomp
+ return syscall(__NR_seccomp, operation, flags, args);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
+}
+
+static uint32_t qemu_seccomp_get_action(int set)
{
- int rc = 0;
+ switch (set) {
+ case QEMU_SECCOMP_SET_DEFAULT:
+ case QEMU_SECCOMP_SET_OBSOLETE:
+ case QEMU_SECCOMP_SET_PRIVILEGED:
+ case QEMU_SECCOMP_SET_SPAWN: {
+#if defined(SECCOMP_GET_ACTION_AVAIL) && defined(SCMP_ACT_KILL_PROCESS) && \
+ defined(SECCOMP_RET_KILL_PROCESS)
+ static int kill_process = -1;
+ if (kill_process == -1) {
+ uint32_t action = SECCOMP_RET_KILL_PROCESS;
+
+ if (qemu_seccomp(SECCOMP_GET_ACTION_AVAIL, 0, &action) == 0) {
+ kill_process = 1;
+ }
+ kill_process = 0;
+ }
+ if (kill_process == 1) {
+ return SCMP_ACT_KILL_PROCESS;
+ }
+#endif
+ return SCMP_ACT_TRAP;
+ }
+
+ case QEMU_SECCOMP_SET_RESOURCECTL:
+ return SCMP_ACT_ERRNO(EPERM);
+
+ default:
+ g_assert_not_reached();
+ }
+}
+
+
+static int seccomp_start(uint32_t seccomp_opts, Error **errp)
+{
+ int rc = -1;
unsigned int i = 0;
scmp_filter_ctx ctx;
- ctx = seccomp_init(SCMP_ACT_KILL);
+ ctx = seccomp_init(SCMP_ACT_ALLOW);
if (ctx == NULL) {
- rc = -1;
+ error_setg(errp, "failed to initialize seccomp context");
goto seccomp_return;
}
- for (i = 0; i < ARRAY_SIZE(seccomp_whitelist); i++) {
- rc = seccomp_rule_add(ctx, SCMP_ACT_ALLOW, seccomp_whitelist[i].num, 0);
- if (rc < 0) {
- goto seccomp_return;
+ rc = seccomp_attr_set(ctx, SCMP_FLTATR_CTL_TSYNC, 1);
+ if (rc != 0) {
+ error_setg_errno(errp, -rc,
+ "failed to set seccomp thread synchronization");
+ goto seccomp_return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(blacklist); i++) {
+ uint32_t action;
+ if (!(seccomp_opts & blacklist[i].set)) {
+ continue;
}
- rc = seccomp_syscall_priority(ctx, seccomp_whitelist[i].num,
- seccomp_whitelist[i].priority);
+
+ action = qemu_seccomp_get_action(blacklist[i].set);
+ rc = seccomp_rule_add_array(ctx, action, blacklist[i].num,
+ blacklist[i].narg, blacklist[i].arg_cmp);
if (rc < 0) {
+ error_setg_errno(errp, -rc,
+ "failed to add seccomp blacklist rules");
goto seccomp_return;
}
}
rc = seccomp_load(ctx);
+ if (rc < 0) {
+ error_setg_errno(errp, -rc,
+ "failed to load seccomp syscall filter in kernel");
+ }
seccomp_return:
seccomp_release(ctx);
- return rc;
+ return rc < 0 ? -1 : 0;
+}
+
+#ifdef CONFIG_SECCOMP
+int parse_sandbox(void *opaque, QemuOpts *opts, Error **errp)
+{
+ if (qemu_opt_get_bool(opts, "enable", false)) {
+ uint32_t seccomp_opts = QEMU_SECCOMP_SET_DEFAULT
+ | QEMU_SECCOMP_SET_OBSOLETE;
+ const char *value = NULL;
+
+ value = qemu_opt_get(opts, "obsolete");
+ if (value) {
+ if (g_str_equal(value, "allow")) {
+ seccomp_opts &= ~QEMU_SECCOMP_SET_OBSOLETE;
+ } else if (g_str_equal(value, "deny")) {
+ /* this is the default option, this if is here
+ * to provide a little bit of consistency for
+ * the command line */
+ } else {
+ error_setg(errp, "invalid argument for obsolete");
+ return -1;
+ }
+ }
+
+ value = qemu_opt_get(opts, "elevateprivileges");
+ if (value) {
+ if (g_str_equal(value, "deny")) {
+ seccomp_opts |= QEMU_SECCOMP_SET_PRIVILEGED;
+ } else if (g_str_equal(value, "children")) {
+ seccomp_opts |= QEMU_SECCOMP_SET_PRIVILEGED;
+
+ /* calling prctl directly because we're
+ * not sure if host has CAP_SYS_ADMIN set*/
+ if (prctl(PR_SET_NO_NEW_PRIVS, 1)) {
+ error_setg(errp, "failed to set no_new_privs aborting");
+ return -1;
+ }
+ } else if (g_str_equal(value, "allow")) {
+ /* default value */
+ } else {
+ error_setg(errp, "invalid argument for elevateprivileges");
+ return -1;
+ }
+ }
+
+ value = qemu_opt_get(opts, "spawn");
+ if (value) {
+ if (g_str_equal(value, "deny")) {
+ seccomp_opts |= QEMU_SECCOMP_SET_SPAWN;
+ } else if (g_str_equal(value, "allow")) {
+ /* default value */
+ } else {
+ error_setg(errp, "invalid argument for spawn");
+ return -1;
+ }
+ }
+
+ value = qemu_opt_get(opts, "resourcecontrol");
+ if (value) {
+ if (g_str_equal(value, "deny")) {
+ seccomp_opts |= QEMU_SECCOMP_SET_RESOURCECTL;
+ } else if (g_str_equal(value, "allow")) {
+ /* default value */
+ } else {
+ error_setg(errp, "invalid argument for resourcecontrol");
+ return -1;
+ }
+ }
+
+ if (seccomp_start(seccomp_opts, errp) < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static QemuOptsList qemu_sandbox_opts = {
+ .name = "sandbox",
+ .implied_opt_name = "enable",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_sandbox_opts.head),
+ .desc = {
+ {
+ .name = "enable",
+ .type = QEMU_OPT_BOOL,
+ },
+ {
+ .name = "obsolete",
+ .type = QEMU_OPT_STRING,
+ },
+ {
+ .name = "elevateprivileges",
+ .type = QEMU_OPT_STRING,
+ },
+ {
+ .name = "spawn",
+ .type = QEMU_OPT_STRING,
+ },
+ {
+ .name = "resourcecontrol",
+ .type = QEMU_OPT_STRING,
+ },
+ { /* end of list */ }
+ },
+};
+
+static void seccomp_register(void)
+{
+ bool add = false;
+
+ /* FIXME: use seccomp_api_get() >= 2 check when released */
+
+#if defined(SECCOMP_FILTER_FLAG_TSYNC)
+ int check;
+
+ /* check host TSYNC capability, it returns errno == ENOSYS if unavailable */
+ check = qemu_seccomp(SECCOMP_SET_MODE_FILTER,
+ SECCOMP_FILTER_FLAG_TSYNC, NULL);
+ if (check < 0 && errno == EFAULT) {
+ add = true;
+ }
+#endif
+
+ if (add) {
+ qemu_add_opts(&qemu_sandbox_opts);
+ }
}
+opts_init(seccomp_register);
+#endif
projects / mirror_qemu.git / blobdiff