mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-22 13:33:56 +03:00
Merge pull request #6999 from poettering/seccomp-newgroups
add three new syscall groups, and port @privileged to make use of more existing ones
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
GitHub
commit
082827e6c6
4
NEWS
4
NEWS
@ -118,8 +118,8 @@ CHANGES WITH 235:
|
||||
each time the service is restarted due to Restart=, and may be
|
||||
queried using "systemctl show -p NRestarts …".
|
||||
|
||||
* New system call filter groups @setuid, @memlock, @signal and
|
||||
@timer have been added, for usage with SystemCallFilter=
|
||||
* New system call filter groups @aio, @sync, @chown, @setuid, @memlock,
|
||||
@signal and @timer have been added, for usage with SystemCallFilter=
|
||||
in unit files and the new --system-call-filter= command line option
|
||||
of systemd-nspawn (see above).
|
||||
|
||||
|
||||
@ -1490,10 +1490,18 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
|
||||
</row>
|
||||
</thead>
|
||||
<tbody>
|
||||
<row>
|
||||
<entry>@aio</entry>
|
||||
<entry>Asynchronous I/O (<citerefentry project='man-pages'><refentrytitle>io_setup</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>io_submit</refentrytitle><manvolnum>2</manvolnum></citerefentry>, and related calls)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>@basic-io</entry>
|
||||
<entry>System calls for basic I/O: reading, writing, seeking, file descriptor duplication and closing (<citerefentry project='man-pages'><refentrytitle>read</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>write</refentrytitle><manvolnum>2</manvolnum></citerefentry>, and related calls)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>@chown</entry>
|
||||
<entry>Changing file ownership (<citerefentry project='man-pages'><refentrytitle>chown</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>fchownat</refentrytitle><manvolnum>2</manvolnum></citerefentry>, and related calls)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>@clock</entry>
|
||||
<entry>System calls for changing the system clock (<citerefentry project='man-pages'><refentrytitle>adjtimex</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>settimeofday</refentrytitle><manvolnum>2</manvolnum></citerefentry>, and related calls)</entry>
|
||||
@ -1574,6 +1582,10 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
|
||||
<entry>@swap</entry>
|
||||
<entry>System calls for enabling/disabling swap devices (<citerefentry project='man-pages'><refentrytitle>swapon</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>swapoff</refentrytitle><manvolnum>2</manvolnum></citerefentry>)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>@sync</entry>
|
||||
<entry>Synchronizing files and memory to disk: (<citerefentry project='man-pages'><refentrytitle>fsync</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>msync</refentrytitle><manvolnum>2</manvolnum></citerefentry>, and related calls)</entry>
|
||||
</row>
|
||||
<row>
|
||||
<entry>@timer</entry>
|
||||
<entry>System calls for scheduling operations by time (<citerefentry project='man-pages'><refentrytitle>alarm</refentrytitle><manvolnum>2</manvolnum></citerefentry>, <citerefentry project='man-pages'><refentrytitle>timer_create</refentrytitle><manvolnum>2</manvolnum></citerefentry>, …)</entry>
|
||||
|
||||
@ -49,7 +49,9 @@ static int seccomp_add_default_syscall_filter(
|
||||
const char* name;
|
||||
} whitelist[] = {
|
||||
/* Let's use set names where we can */
|
||||
{ 0, "@aio" },
|
||||
{ 0, "@basic-io" },
|
||||
{ 0, "@chown" },
|
||||
{ 0, "@default" },
|
||||
{ 0, "@file-system" },
|
||||
{ 0, "@io-event" },
|
||||
@ -60,6 +62,7 @@ static int seccomp_add_default_syscall_filter(
|
||||
{ 0, "@resources" },
|
||||
{ 0, "@setuid" },
|
||||
{ 0, "@signal" },
|
||||
{ 0, "@sync" },
|
||||
{ 0, "@timer" },
|
||||
|
||||
/* The following four are sets we optionally enable, in case the caps have been configured for it */
|
||||
@ -72,42 +75,25 @@ static int seccomp_add_default_syscall_filter(
|
||||
{ 0, "brk" },
|
||||
{ 0, "capget" },
|
||||
{ 0, "capset" },
|
||||
{ 0, "chown" },
|
||||
{ 0, "chown32" },
|
||||
{ 0, "copy_file_range" },
|
||||
{ 0, "fadvise64" },
|
||||
{ 0, "fadvise64_64" },
|
||||
{ 0, "fchown" },
|
||||
{ 0, "fchown32" },
|
||||
{ 0, "fchownat" },
|
||||
{ 0, "fdatasync" },
|
||||
{ 0, "flock" },
|
||||
{ 0, "fsync" },
|
||||
{ 0, "get_mempolicy" },
|
||||
{ 0, "getcpu" },
|
||||
{ 0, "getpriority" },
|
||||
{ 0, "getrandom" },
|
||||
{ 0, "io_cancel" },
|
||||
{ 0, "io_destroy" },
|
||||
{ 0, "io_getevents" },
|
||||
{ 0, "io_setup" },
|
||||
{ 0, "io_submit" },
|
||||
{ 0, "ioctl" },
|
||||
{ 0, "ioprio_get" },
|
||||
{ 0, "kcmp" },
|
||||
{ 0, "lchown" },
|
||||
{ 0, "lchown32" },
|
||||
{ 0, "madvise" },
|
||||
{ 0, "mincore" },
|
||||
{ 0, "mprotect" },
|
||||
{ 0, "mremap" },
|
||||
{ 0, "msync" },
|
||||
{ 0, "name_to_handle_at" },
|
||||
{ 0, "oldolduname" },
|
||||
{ 0, "olduname" },
|
||||
{ 0, "personality" },
|
||||
{ 0, "preadv2" },
|
||||
{ 0, "pwritev2" },
|
||||
{ 0, "readahead" },
|
||||
{ 0, "readdir" },
|
||||
{ 0, "remap_file_pages" },
|
||||
@ -131,9 +117,6 @@ static int seccomp_add_default_syscall_filter(
|
||||
{ 0, "setpgid" },
|
||||
{ 0, "setsid" },
|
||||
{ 0, "splice" },
|
||||
{ 0, "sync" },
|
||||
{ 0, "sync_file_range" },
|
||||
{ 0, "syncfs" },
|
||||
{ 0, "sysinfo" },
|
||||
{ 0, "tee" },
|
||||
{ 0, "umask" },
|
||||
|
||||
@ -317,6 +317,16 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
"time\0"
|
||||
"ugetrlimit\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_AIO] = {
|
||||
.name = "@aio",
|
||||
.help = "Asynchronous IO",
|
||||
.value =
|
||||
"io_cancel\0"
|
||||
"io_destroy\0"
|
||||
"io_getevents\0"
|
||||
"io_setup\0"
|
||||
"io_submit\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_BASIC_IO] = {
|
||||
.name = "@basic-io",
|
||||
.help = "Basic IO",
|
||||
@ -329,13 +339,27 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
"lseek\0"
|
||||
"pread64\0"
|
||||
"preadv\0"
|
||||
"preadv2\0"
|
||||
"pwrite64\0"
|
||||
"pwritev\0"
|
||||
"pwritev2\0"
|
||||
"read\0"
|
||||
"readv\0"
|
||||
"write\0"
|
||||
"writev\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_CHOWN] = {
|
||||
.name = "@chown",
|
||||
.help = "Change ownership of files and directories",
|
||||
.value =
|
||||
"chown\0"
|
||||
"chown32\0"
|
||||
"fchown\0"
|
||||
"fchown32\0"
|
||||
"fchownat\0"
|
||||
"lchown\0"
|
||||
"lchown32\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_CLOCK] = {
|
||||
.name = "@clock",
|
||||
.help = "Change the system time",
|
||||
@ -600,27 +624,20 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
.name = "@privileged",
|
||||
.help = "All system calls which need super-user capabilities",
|
||||
.value =
|
||||
"@chown\0"
|
||||
"@clock\0"
|
||||
"@module\0"
|
||||
"@raw-io\0"
|
||||
"@reboot\0"
|
||||
"@swap\0"
|
||||
"_sysctl\0"
|
||||
"acct\0"
|
||||
"bpf\0"
|
||||
"capset\0"
|
||||
"chown\0"
|
||||
"chown32\0"
|
||||
"chroot\0"
|
||||
"fchown\0"
|
||||
"fchown32\0"
|
||||
"fchownat\0"
|
||||
"kexec_file_load\0"
|
||||
"kexec_load\0"
|
||||
"lchown\0"
|
||||
"lchown32\0"
|
||||
"nfsservctl\0"
|
||||
"pivot_root\0"
|
||||
"quotactl\0"
|
||||
"reboot\0"
|
||||
"setdomainname\0"
|
||||
"setfsuid\0"
|
||||
"setfsuid32\0"
|
||||
@ -633,8 +650,6 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
"setreuid32\0"
|
||||
"setuid\0"
|
||||
"setuid32\0"
|
||||
"swapoff\0"
|
||||
"swapon\0"
|
||||
"vhangup\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_PROCESS] = {
|
||||
@ -681,8 +696,8 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
.name = "@reboot",
|
||||
.help = "Reboot and reboot preparation/kexec",
|
||||
.value =
|
||||
"kexec\0"
|
||||
"kexec_file_load\0"
|
||||
"kexec_load\0"
|
||||
"reboot\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_RESOURCES] = {
|
||||
@ -746,6 +761,17 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
|
||||
"swapoff\0"
|
||||
"swapon\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_SYNC] = {
|
||||
.name = "@sync",
|
||||
.help = "Synchronize files and memory to storage",
|
||||
.value =
|
||||
"fdatasync\0"
|
||||
"fsync\0"
|
||||
"msync\0"
|
||||
"sync\0"
|
||||
"sync_file_range\0"
|
||||
"syncfs\0"
|
||||
},
|
||||
[SYSCALL_FILTER_SET_TIMER] = {
|
||||
.name = "@timer",
|
||||
.help = "Schedule operations by time",
|
||||
|
||||
@ -41,7 +41,9 @@ typedef struct SyscallFilterSet {
|
||||
enum {
|
||||
/* Please leave DEFAULT first, but sort the rest alphabetically */
|
||||
SYSCALL_FILTER_SET_DEFAULT,
|
||||
SYSCALL_FILTER_SET_AIO,
|
||||
SYSCALL_FILTER_SET_BASIC_IO,
|
||||
SYSCALL_FILTER_SET_CHOWN,
|
||||
SYSCALL_FILTER_SET_CLOCK,
|
||||
SYSCALL_FILTER_SET_CPU_EMULATION,
|
||||
SYSCALL_FILTER_SET_DEBUG,
|
||||
@ -62,6 +64,7 @@ enum {
|
||||
SYSCALL_FILTER_SET_SETUID,
|
||||
SYSCALL_FILTER_SET_SIGNAL,
|
||||
SYSCALL_FILTER_SET_SWAP,
|
||||
SYSCALL_FILTER_SET_SYNC,
|
||||
SYSCALL_FILTER_SET_TIMER,
|
||||
_SYSCALL_FILTER_SET_MAX
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user