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10 changed files with 45 additions and 152 deletions

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@ -18,7 +18,6 @@ charset = utf-8
[*.{c,h}]
indent_style = space
indent_size = 8
max_line_length = 109
[*.sh]
indent_style = space
@ -31,4 +30,3 @@ indent_size = 8
[man/*.xml]
indent_size = 2
indent_style = space
max_line_length = 109

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@ -191,10 +191,10 @@ evdev:name:Elan Touchpad:dmi:*:svnASUSTeKCOMPUTERINC.:pnUX305UA:*
# Asus UX362FA
evdev:name:ELAN1401:00 04F3:30DC Touchpad:dmi:*:svnASUSTeKCOMPUTERINC.:pnZenBookUX362FA_UX362FA:*
EVDEV_ABS_00=:::8
EVDEV_ABS_01=:::8
EVDEV_ABS_35=:::8
EVDEV_ABS_36=:::8
EVDEV_ABS_00=:::16
EVDEV_ABS_01=:::16
EVDEV_ABS_35=:::16
EVDEV_ABS_36=:::16
#########################################
# Bangho

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@ -157,19 +157,6 @@ static bool filename_possibly_with_slash_suffix(const char *s) {
return filename_is_valid(copied);
}
static bool is_name_to_handle_at_fatal_error(int err) {
/* name_to_handle_at() can return "acceptable" errors that are due to the context. For
* example the kernel does not support name_to_handle_at() at all (ENOSYS), or the syscall
* was blocked (EACCES/EPERM; maybe through seccomp, because we are running inside of a
* container), or the mount point is not triggered yet (EOVERFLOW, think nfs4), or some
* general name_to_handle_at() flakiness (EINVAL). However other errors are not supposed to
* happen and therefore are considered fatal ones. */
assert(err < 0);
return !IN_SET(err, -EOPNOTSUPP, -ENOSYS, -EACCES, -EPERM, -EOVERFLOW, -EINVAL);
}
int fd_is_mount_point(int fd, const char *filename, int flags) {
_cleanup_free_ struct file_handle *h = NULL, *h_parent = NULL;
int mount_id = -1, mount_id_parent = -1;
@ -219,40 +206,39 @@ int fd_is_mount_point(int fd, const char *filename, int flags) {
return false; /* symlinks are never mount points */
r = name_to_handle_at_loop(fd, filename, &h, &mount_id, flags);
if (r < 0) {
if (is_name_to_handle_at_fatal_error(r))
return r;
if (r != -EOPNOTSUPP)
goto fallback_fdinfo;
/* This kernel or file system does not support name_to_handle_at(), hence let's see
* if the upper fs supports it (in which case it is a mount point), otherwise fall
* back to the traditional stat() logic */
if (IN_SET(r, -ENOSYS, -EACCES, -EPERM, -EOVERFLOW, -EINVAL))
/* This kernel does not support name_to_handle_at() at all (ENOSYS), or the syscall was blocked
* (EACCES/EPERM; maybe through seccomp, because we are running inside of a container?), or the mount
* point is not triggered yet (EOVERFLOW, think nfs4), or some general name_to_handle_at() flakiness
* (EINVAL): fall back to simpler logic. */
goto fallback_fdinfo;
else if (r == -EOPNOTSUPP)
/* This kernel or file system does not support name_to_handle_at(), hence let's see if the upper fs
* supports it (in which case it is a mount point), otherwise fall back to the traditional stat()
* logic */
nosupp = true;
}
else if (r < 0)
return r;
r = name_to_handle_at_loop(fd, "", &h_parent, &mount_id_parent, AT_EMPTY_PATH);
if (r < 0) {
if (is_name_to_handle_at_fatal_error(r))
return r;
if (r != -EOPNOTSUPP)
goto fallback_fdinfo;
if (r == -EOPNOTSUPP) {
if (nosupp)
/* Both the parent and the directory can't do name_to_handle_at() */
/* Neither parent nor child do name_to_handle_at()? We have no choice but to fall back. */
goto fallback_fdinfo;
else
/* The parent can't do name_to_handle_at() but the directory we are interested in can? If so,
* it must be a mount point. */
return 1;
} else if (r < 0)
return r;
/* The parent can't do name_to_handle_at() but the directory we are
* interested in can? If so, it must be a mount point. */
return 1;
}
/* The parent can do name_to_handle_at() but the directory we are interested in can't? If
* so, it must be a mount point. */
/* The parent can do name_to_handle_at() but the directory we are interested in can't? If so, it must
* be a mount point. */
if (nosupp)
return 1;
/* If the file handle for the directory we are interested in and its parent are identical,
* we assume this is the root directory, which is a mount point. */
/* If the file handle for the directory we are interested in and its parent are identical, we assume
* this is the root directory, which is a mount point. */
if (h->handle_bytes == h_parent->handle_bytes &&
h->handle_type == h_parent->handle_type &&
@ -352,10 +338,10 @@ int path_get_mnt_id(const char *path, int *ret) {
}
r = name_to_handle_at_loop(AT_FDCWD, path, NULL, ret, 0);
if (r == 0 || is_name_to_handle_at_fatal_error(r))
return r;
if (IN_SET(r, -EOPNOTSUPP, -ENOSYS, -EACCES, -EPERM, -EOVERFLOW, -EINVAL)) /* kernel/fs don't support this, or seccomp blocks access, or untriggered mount, or name_to_handle_at() is flaky */
return fd_fdinfo_mnt_id(AT_FDCWD, path, 0, ret);
return fd_fdinfo_mnt_id(AT_FDCWD, path, 0, ret);
return r;
}
bool fstype_is_network(const char *fstype) {

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@ -1789,10 +1789,6 @@ int seccomp_restrict_archs(Set *archs) {
for (unsigned i = 0; seccomp_local_archs[i] != SECCOMP_LOCAL_ARCH_END; ++i) {
uint32_t arch = seccomp_local_archs[i];
/* See above comment, our "native" architecture is never blocked. */
if (arch == seccomp_arch_native())
continue;
/* That architecture might have already been blocked by a previous call to seccomp_restrict_archs. */
if (arch == SECCOMP_LOCAL_ARCH_BLOCKED)
continue;

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@ -713,10 +713,8 @@ static void test_exec_systemcallfilter(Manager *m) {
test(m, "exec-systemcallfilter-not-failing.service", 0, CLD_EXITED);
test(m, "exec-systemcallfilter-not-failing2.service", 0, CLD_EXITED);
test(m, "exec-systemcallfilter-not-failing3.service", 0, CLD_EXITED);
test(m, "exec-systemcallfilter-failing.service", SIGSYS, CLD_KILLED);
test(m, "exec-systemcallfilter-failing2.service", SIGSYS, CLD_KILLED);
test(m, "exec-systemcallfilter-failing3.service", SIGSYS, CLD_KILLED);
r = find_executable("python3", NULL);
if (r < 0) {

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@ -890,66 +890,6 @@ static void test_load_syscall_filter_set_raw(void) {
assert_se(wait_for_terminate_and_check("syscallrawseccomp", pid, WAIT_LOG) == EXIT_SUCCESS);
}
static void test_native_syscalls_filtered(void) {
pid_t pid;
log_info("/* %s */", __func__);
if (!is_seccomp_available()) {
log_notice("Seccomp not available, skipping %s", __func__);
return;
}
if (!have_seccomp_privs()) {
log_notice("Not privileged, skipping %s", __func__);
return;
}
pid = fork();
assert_se(pid >= 0);
if (pid == 0) {
_cleanup_set_free_ Set *arch_s = NULL;
_cleanup_hashmap_free_ Hashmap *s = NULL;
/* Passing "native" or an empty set is equivalent, just do both here. */
assert_se(arch_s = set_new(NULL));
assert_se(seccomp_restrict_archs(arch_s) >= 0);
assert_se(set_put(arch_s, SCMP_ARCH_NATIVE) >= 0);
assert_se(seccomp_restrict_archs(arch_s) >= 0);
assert_se(access("/", F_OK) >= 0);
assert_se(poll(NULL, 0, 0) == 0);
assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, NULL, scmp_act_kill_process(), true) >= 0);
assert_se(access("/", F_OK) >= 0);
assert_se(poll(NULL, 0, 0) == 0);
assert_se(s = hashmap_new(NULL));
#if defined __NR_access && __NR_access >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_access + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has access()");
#endif
#if defined __NR_faccessat && __NR_faccessat >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has faccessat()");
#endif
#if defined __NR_faccessat2 && __NR_faccessat2 >= 0
assert_se(hashmap_put(s, UINT32_TO_PTR(__NR_faccessat2 + 1), INT_TO_PTR(-1)) >= 0);
log_debug("has faccessat2()");
#endif
assert_se(!hashmap_isempty(s));
assert_se(seccomp_load_syscall_filter_set_raw(SCMP_ACT_ALLOW, s, SCMP_ACT_ERRNO(EUCLEAN), true) >= 0);
assert_se(access("/", F_OK) < 0);
assert_se(errno == EUCLEAN);
_exit(EXIT_SUCCESS);
}
assert_se(wait_for_terminate_and_check("nativeseccomp", pid, WAIT_LOG) == EXIT_SUCCESS);
}
static void test_lock_personality(void) {
unsigned long current;
pid_t pid;
@ -1231,7 +1171,6 @@ int main(int argc, char *argv[]) {
test_memory_deny_write_execute_shmat();
test_restrict_archs();
test_load_syscall_filter_set_raw();
test_native_syscalls_filtered();
test_lock_personality();
test_restrict_suid_sgid();

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@ -635,7 +635,7 @@ Name={}
[Network]
DHCP=ipv4
IPv6AcceptRA=False
DNSSECNegativeTrustAnchors=search.example.com
DNSSECNegativeTrustAnchors=megasearch.net
'''.format(self.iface))
# create second device/dnsmasq for a .company/.lab VPN interface
@ -681,8 +681,8 @@ DNSSECNegativeTrustAnchors=company lab
self.assertIn(b'kettle.cantina.company: 10.241.4.4', out)
# test general domains
out = subprocess.check_output(['resolvectl', 'query', 'search.example.com'])
self.assertIn(b'search.example.com: 192.168.42.1', out)
out = subprocess.check_output(['resolvectl', 'query', 'megasearch.net'])
self.assertIn(b'megasearch.net: 192.168.42.1', out)
with open(self.dnsmasq_log) as f:
general_log = f.read()
@ -696,8 +696,8 @@ DNSSECNegativeTrustAnchors=company lab
self.assertNotIn('.company', general_log)
# general domains should not be sent to the VPN DNS
self.assertRegex(general_log, 'query.*search.example.com')
self.assertNotIn('search.example.com', vpn_log)
self.assertRegex(general_log, 'query.*megasearch.net')
self.assertNotIn('megasearch.net', vpn_log)
def test_resolved_etc_hosts(self):
'''resolved queries to /etc/hosts'''

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@ -1,9 +0,0 @@
[Unit]
Description=Test for SystemCallFilter
[Service]
ExecStart=/bin/sh -c '/bin/echo "This should not be seen"'
Type=oneshot
LimitCORE=0
SystemCallArchitectures=native
SystemCallFilter=~write open execve fexecve execveat exit_group close mmap munmap fstat DONOTEXIST

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@ -1,8 +0,0 @@
[Unit]
Description=Test for SystemCallFilter
[Service]
ExecStart=/bin/sh -c 'echo "Foo bar"'
Type=oneshot
SystemCallArchitectures=native
SystemCallFilter=

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@ -4,13 +4,6 @@
set -eux
set -o pipefail
ARGS=()
if [[ -v ASAN_OPTIONS || -v UBSAN_OPTIONS ]]; then
# If we're running under sanitizers, we need to use a less restrictive
# profile, otherwise LSan syscall would get blocked by seccomp
ARGS+=(--profile=trusted)
fi
export SYSTEMD_LOG_LEVEL=debug
mkdir -p /run/systemd/system/systemd-portabled.service.d/
cat <<EOF >/run/systemd/system/systemd-portabled.service.d/override.conf
@ -18,7 +11,7 @@ cat <<EOF >/run/systemd/system/systemd-portabled.service.d/override.conf
Environment=SYSTEMD_LOG_LEVEL=debug
EOF
portablectl "${ARGS[@]}" attach --now --runtime /usr/share/minimal_0.raw app0
portablectl attach --now --runtime /usr/share/minimal_0.raw app0
systemctl is-active app0.service
systemctl is-active app0-foo.service
@ -28,7 +21,7 @@ systemctl is-active app0-bar.service && exit 1
set -e
set -o pipefail
portablectl "${ARGS[@]}" reattach --now --runtime /usr/share/minimal_1.raw app0
portablectl reattach --now --runtime /usr/share/minimal_1.raw app0
systemctl is-active app0.service
systemctl is-active app0-bar.service
@ -49,7 +42,7 @@ portablectl list | grep -q -F "No images."
unsquashfs -dest /tmp/minimal_0 /usr/share/minimal_0.raw
unsquashfs -dest /tmp/minimal_1 /usr/share/minimal_1.raw
portablectl "${ARGS[@]}" attach --copy=symlink --now --runtime /tmp/minimal_0 app0
portablectl attach --copy=symlink --now --runtime /tmp/minimal_0 app0
systemctl is-active app0.service
systemctl is-active app0-foo.service
@ -59,7 +52,7 @@ systemctl is-active app0-bar.service && exit 1
set -e
set -o pipefail
portablectl "${ARGS[@]}" reattach --now --enable --runtime /tmp/minimal_1 app0
portablectl reattach --now --enable --runtime /tmp/minimal_1 app0
systemctl is-active app0.service
systemctl is-active app0-bar.service
@ -75,21 +68,21 @@ portablectl detach --now --enable --runtime /tmp/minimal_1 app0
portablectl list | grep -q -F "No images."
portablectl "${ARGS[@]}" attach --now --runtime --extension /usr/share/app0.raw /usr/share/minimal_0.raw app0
portablectl attach --now --runtime --extension /usr/share/app0.raw /usr/share/minimal_0.raw app0
systemctl is-active app0.service
portablectl "${ARGS[@]}" reattach --now --runtime --extension /usr/share/app0.raw /usr/share/minimal_1.raw app0
portablectl reattach --now --runtime --extension /usr/share/app0.raw /usr/share/minimal_1.raw app0
systemctl is-active app0.service
portablectl detach --now --runtime --extension /usr/share/app0.raw /usr/share/minimal_1.raw app0
portablectl "${ARGS[@]}" attach --now --runtime --extension /usr/share/app1.raw /usr/share/minimal_0.raw app1
portablectl attach --now --runtime --extension /usr/share/app1.raw /usr/share/minimal_0.raw app1
systemctl is-active app1.service
portablectl "${ARGS[@]}" reattach --now --runtime --extension /usr/share/app1.raw /usr/share/minimal_1.raw app1
portablectl reattach --now --runtime --extension /usr/share/app1.raw /usr/share/minimal_1.raw app1
systemctl is-active app1.service
@ -102,7 +95,7 @@ mount /usr/share/app1.raw /tmp/app1
mount /usr/share/minimal_0.raw /tmp/rootdir
mount -t overlay overlay -o lowerdir=/tmp/app1:/tmp/rootdir /tmp/overlay
portablectl "${ARGS[@]}" attach --copy=symlink --now --runtime /tmp/overlay app1
portablectl attach --copy=symlink --now --runtime /tmp/overlay app1
systemctl is-active app1.service