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core: make sure we can combine DevicePolicy=closed with PrivateDevices=yes

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if PrivateDevices=yes is used we need to make sure we can still
create /dev/null and so on.
This commit is contained in:
Lennart Poettering 2014-03-19 22:00:43 +01:00
parent a3d59cd1b0
commit 7d711efb9c
1 changed files with 11 additions and 5 deletions
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16
src/core/cgroup.c
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@ -364,16 +364,22 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha
if (c->device_policy == CGROUP_CLOSED ||
(c->device_policy == CGROUP_AUTO && c->device_allow)) {
static const char auto_devices[] =
"/dev/null\0" "rw\0"
"/dev/zero\0" "rw\0"
"/dev/full\0" "rw\0"
"/dev/random\0" "rw\0"
"/dev/urandom\0" "rw\0";
"/dev/null\0" "rwm\0"
"/dev/zero\0" "rwm\0"
"/dev/full\0" "rwm\0"
"/dev/random\0" "rwm\0"
"/dev/urandom\0" "rwm\0"
"/dev/tty\0" "rwm\0"
"/dev/pts/ptmx\0" "rw\0"; /* /dev/pts/ptmx may not be duplicated, but accessed */
const char *x, *y;
NULSTR_FOREACH_PAIR(x, y, auto_devices)
whitelist_device(path, x, y);
whitelist_major(path, "pts", 'c', "rw");
whitelist_major(path, "kdbus", 'c', "rw");
whitelist_major(path, "kdbus/*", 'c', "rw");
}
LIST_FOREACH(device_allow, a, c->device_allow) {