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confile: properly namespace security keys

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- lxc.aa_profile => lxc.apparmor.profile
- lxc.aa_allow_incomplete => lxc.apparmor.allow_incomplete
- lxc.se_context => lxc.selinux.context

The legacy keys will be kept around until LXC 3.0 and then will be removed.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2017-06-23 15:35:17 +02:00
parent a7ff221374
commit 953fe44f7c
No known key found for this signature in database
GPG Key ID: 7B3C391EFEA93624
9 changed files with 299 additions and 155 deletions
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4
src/lxc/Makefile.am
View File

@ -21,7 +21,7 @@ noinst_HEADERS = \
caps.h \ caps.h \
conf.h \ conf.h \
confile.h \ confile.h \
confile_network_legacy.h \ confile_legacy.h \
confile_utils.h \ confile_utils.h \
console.h \ console.h \
error.h \ error.h \
@ -104,7 +104,7 @@ liblxc_la_SOURCES = \
namespace.h namespace.c \ namespace.h namespace.c \
conf.c conf.h \ conf.c conf.h \
confile.c confile.h \ confile.c confile.h \
confile_network_legacy.c confile_network_legacy.h \ confile_legacy.c confile_legacy.h \
confile_utils.c confile_utils.h \ confile_utils.c confile_utils.h \
list.h \ list.h \
state.c state.h \ state.c state.h \

1
src/lxc/conf.c
View File

@ -1455,6 +1455,7 @@ static int lxc_setup_dev_console(const struct lxc_rootfs *rootfs,
} else { } else {
DEBUG("cleared all (%d) mounts from \"%s\"", ret, path); DEBUG("cleared all (%d) mounts from \"%s\"", ret, path);
} }
ret = unlink(path); ret = unlink(path);
if (ret < 0) { if (ret < 0) {
SYSERROR("error unlinking %s", path); SYSERROR("error unlinking %s", path);

88
src/lxc/confile.c
View File

@ -45,7 +45,7 @@
#include "parse.h" #include "parse.h"
#include "config.h" #include "config.h"
#include "confile.h" #include "confile.h"
#include "confile_network_legacy.h" #include "confile_legacy.h"
#include "confile_utils.h" #include "confile_utils.h"
#include "utils.h" #include "utils.h"
#include "log.h" #include "log.h"
@ -93,24 +93,24 @@ static int get_config_kmsg(const char *, char *, int, struct lxc_conf *,
void *); void *);
static int clr_config_kmsg(const char *, struct lxc_conf *, void *); static int clr_config_kmsg(const char *, struct lxc_conf *, void *);
static int set_config_lsm_aa_profile(const char *, const char *, static int set_config_apparmor_profile(const char *, const char *,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int get_config_lsm_aa_profile(const char *, char *, int, static int get_config_apparmor_profile(const char *, char *, int,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int clr_config_lsm_aa_profile(const char *, struct lxc_conf *, void *); static int clr_config_apparmor_profile(const char *, struct lxc_conf *, void *);
static int set_config_lsm_aa_incomplete(const char *, const char *, static int set_config_apparmor_allow_incomplete(const char *, const char *,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int get_config_lsm_aa_incomplete(const char *, char *, int, static int get_config_apparmor_allow_incomplete(const char *, char *, int,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int clr_config_lsm_aa_incomplete(const char *, struct lxc_conf *, static int clr_config_apparmor_allow_incomplete(const char *, struct lxc_conf *,
void *); void *);
static int set_config_lsm_se_context(const char *, const char *, static int set_config_selinux_context(const char *, const char *,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int get_config_lsm_se_context(const char *, char *, int, static int get_config_selinux_context(const char *, char *, int,
struct lxc_conf *, void *); struct lxc_conf *, void *);
static int clr_config_lsm_se_context(const char *, struct lxc_conf *, void *); static int clr_config_selinux_context(const char *, struct lxc_conf *, void *);
static int set_config_cgroup(const char *, const char *, struct lxc_conf *, static int set_config_cgroup(const char *, const char *, struct lxc_conf *,
void *); void *);
@ -429,9 +429,17 @@ static struct lxc_config_t config[] = {
{ "lxc.tty", set_config_tty, get_config_tty, clr_config_tty, }, { "lxc.tty", set_config_tty, get_config_tty, clr_config_tty, },
{ "lxc.devttydir", set_config_ttydir, get_config_ttydir, clr_config_ttydir, }, { "lxc.devttydir", set_config_ttydir, get_config_ttydir, clr_config_ttydir, },
{ "lxc.kmsg", set_config_kmsg, get_config_kmsg, clr_config_kmsg, }, { "lxc.kmsg", set_config_kmsg, get_config_kmsg, clr_config_kmsg, },
{ "lxc.apparmor.profile", set_config_apparmor_profile, get_config_apparmor_profile, clr_config_apparmor_profile, },
{ "lxc.apparmor.allow_incomplete", set_config_apparmor_allow_incomplete, get_config_apparmor_allow_incomplete, clr_config_apparmor_allow_incomplete, },
{ "lxc.selinux.context", set_config_selinux_context, get_config_selinux_context, clr_config_selinux_context, },
/* REMOVE IN LXC 3.0
legacy security keys
*/
{ "lxc.aa_profile", set_config_lsm_aa_profile, get_config_lsm_aa_profile, clr_config_lsm_aa_profile, }, { "lxc.aa_profile", set_config_lsm_aa_profile, get_config_lsm_aa_profile, clr_config_lsm_aa_profile, },
{ "lxc.aa_allow_incomplete", set_config_lsm_aa_incomplete, get_config_lsm_aa_incomplete, clr_config_lsm_aa_incomplete, }, { "lxc.aa_allow_incomplete", set_config_lsm_aa_incomplete, get_config_lsm_aa_incomplete, clr_config_lsm_aa_incomplete, },
{ "lxc.se_context", set_config_lsm_se_context, get_config_lsm_se_context, clr_config_lsm_se_context, }, { "lxc.se_context", set_config_lsm_se_context, get_config_lsm_se_context, clr_config_lsm_se_context, },
{ "lxc.cgroup", set_config_cgroup, get_config_cgroup, clr_config_cgroup, }, { "lxc.cgroup", set_config_cgroup, get_config_cgroup, clr_config_cgroup, },
{ "lxc.id_map", set_config_idmaps, get_config_idmaps, clr_config_idmaps, }, { "lxc.id_map", set_config_idmaps, get_config_idmaps, clr_config_idmaps, },
{ "lxc.loglevel", set_config_loglevel, get_config_loglevel, clr_config_loglevel, }, { "lxc.loglevel", set_config_loglevel, get_config_loglevel, clr_config_loglevel, },
@ -455,7 +463,10 @@ static struct lxc_config_t config[] = {
{ "lxc.hook.clone", set_config_hooks, get_config_hooks, clr_config_hooks, }, { "lxc.hook.clone", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook.destroy", set_config_hooks, get_config_hooks, clr_config_hooks, }, { "lxc.hook.destroy", set_config_hooks, get_config_hooks, clr_config_hooks, },
{ "lxc.hook", set_config_hooks, get_config_hooks, clr_config_hooks, }, { "lxc.hook", set_config_hooks, get_config_hooks, clr_config_hooks, },
/* legacy network keys */
/* REMOVE IN LXC 3.0
legacy security keys
*/
{ "lxc.network.type", set_config_network_legacy_type, get_config_network_legacy_item, clr_config_network_legacy_item, }, { "lxc.network.type", set_config_network_legacy_type, get_config_network_legacy_item, clr_config_network_legacy_item, },
{ "lxc.network.flags", set_config_network_legacy_flags, get_config_network_legacy_item, clr_config_network_legacy_item, }, { "lxc.network.flags", set_config_network_legacy_flags, get_config_network_legacy_item, clr_config_network_legacy_item, },
{ "lxc.network.link", set_config_network_legacy_link, get_config_network_legacy_item, clr_config_network_legacy_item, }, { "lxc.network.link", set_config_network_legacy_link, get_config_network_legacy_item, clr_config_network_legacy_item, },
@ -491,8 +502,6 @@ static struct lxc_config_t config[] = {
{ "lxc.net.ipv6", set_config_net_ipv6, get_config_net_ipv6, clr_config_net_ipv6, }, { "lxc.net.ipv6", set_config_net_ipv6, get_config_net_ipv6, clr_config_net_ipv6, },
{ "lxc.net.", set_config_net_nic, get_config_net_nic, clr_config_net_nic, }, { "lxc.net.", set_config_net_nic, get_config_net_nic, clr_config_net_nic, },
{ "lxc.net", set_config_net, get_config_net, clr_config_net, }, { "lxc.net", set_config_net, get_config_net, clr_config_net, },
{ "lxc.cap.drop", set_config_cap_drop, get_config_cap_drop, clr_config_cap_drop, }, { "lxc.cap.drop", set_config_cap_drop, get_config_cap_drop, clr_config_cap_drop, },
{ "lxc.cap.keep", set_config_cap_keep, get_config_cap_keep, clr_config_cap_keep, }, { "lxc.cap.keep", set_config_cap_keep, get_config_cap_keep, clr_config_cap_keep, },
{ "lxc.console.logfile", set_config_console_logfile, get_config_console_logfile, clr_config_console_logfile, }, { "lxc.console.logfile", set_config_console_logfile, get_config_console_logfile, clr_config_console_logfile, },
@ -1585,14 +1594,16 @@ static int set_config_kmsg(const char *key, const char *value,
return 0; return 0;
} }
static int set_config_lsm_aa_profile(const char *key, const char *value, static int set_config_apparmor_profile(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data) struct lxc_conf *lxc_conf, void *data)
{ {
return set_config_string_item(&lxc_conf->lsm_aa_profile, value); return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
} }
static int set_config_lsm_aa_incomplete(const char *key, const char *value, static int set_config_apparmor_allow_incomplete(const char *key,
struct lxc_conf *lxc_conf, void *data) const char *value,
struct lxc_conf *lxc_conf,
void *data)
{ {
/* Set config value to default. */ /* Set config value to default. */
if (lxc_config_value_empty(value)) { if (lxc_config_value_empty(value)) {
@ -1613,7 +1624,7 @@ static int set_config_lsm_aa_incomplete(const char *key, const char *value,
return 0; return 0;
} }
static int set_config_lsm_se_context(const char *key, const char *value, static int set_config_selinux_context(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data) struct lxc_conf *lxc_conf, void *data)
{ {
return set_config_string_item(&lxc_conf->lsm_se_context, value); return set_config_string_item(&lxc_conf->lsm_se_context, value);
@ -2615,17 +2626,6 @@ int lxc_fill_elevated_privileges(char *flaglist, int *flags)
return 0; return 0;
} }
static inline int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen,
int v)
{
if (!retv)
inlen = 0;
else
memset(retv, 0, inlen);
return snprintf(retv, inlen, "%d", v);
}
/* Write out a configuration file. */ /* Write out a configuration file. */
void write_config(FILE *fout, struct lxc_conf *c) void write_config(FILE *fout, struct lxc_conf *c)
{ {
@ -3100,16 +3100,6 @@ static int get_config_tty(const char *key, char *retv, int inlen,
return lxc_get_conf_int(c, retv, inlen, c->tty); return lxc_get_conf_int(c, retv, inlen, c->tty);
} }
static inline int lxc_get_conf_str(char *retv, int inlen, const char *value)
{
if (!value)
return 0;
if (retv && inlen >= strlen(value) + 1)
strncpy(retv, value, strlen(value) + 1);
return strlen(value);
}
static int get_config_ttydir(const char *key, char *retv, int inlen, static int get_config_ttydir(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data) struct lxc_conf *c, void *data)
{ {
@ -3122,20 +3112,21 @@ static int get_config_kmsg(const char *key, char *retv, int inlen,
return lxc_get_conf_int(c, retv, inlen, c->kmsg); return lxc_get_conf_int(c, retv, inlen, c->kmsg);
} }
static int get_config_lsm_aa_profile(const char *key, char *retv, int inlen, static int get_config_apparmor_profile(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data) struct lxc_conf *c, void *data)
{ {
return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile); return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile);
} }
static int get_config_lsm_aa_incomplete(const char *key, char *retv, int inlen, static int get_config_apparmor_allow_incomplete(const char *key, char *retv,
struct lxc_conf *c, void *data) int inlen, struct lxc_conf *c,
void *data)
{ {
return lxc_get_conf_int(c, retv, inlen, return lxc_get_conf_int(c, retv, inlen,
c->lsm_aa_allow_incomplete); c->lsm_aa_allow_incomplete);
} }
static int get_config_lsm_se_context(const char *key, char *retv, int inlen, static int get_config_selinux_context(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data) struct lxc_conf *c, void *data)
{ {
return lxc_get_conf_str(retv, inlen, c->lsm_se_context); return lxc_get_conf_str(retv, inlen, c->lsm_se_context);
@ -3710,23 +3701,24 @@ static inline int clr_config_kmsg(const char *key, struct lxc_conf *c,
return 0; return 0;
} }
static inline int clr_config_lsm_aa_profile(const char *key, struct lxc_conf *c, static inline int clr_config_apparmor_profile(const char *key,
void *data) struct lxc_conf *c, void *data)
{ {
free(c->lsm_aa_profile); free(c->lsm_aa_profile);
c->lsm_aa_profile = NULL; c->lsm_aa_profile = NULL;
return 0; return 0;
} }
static inline int clr_config_lsm_aa_incomplete(const char *key, static inline int clr_config_apparmor_allow_incomplete(const char *key,
struct lxc_conf *c, void *data) struct lxc_conf *c,
void *data)
{ {
c->lsm_aa_allow_incomplete = 0; c->lsm_aa_allow_incomplete = 0;
return 0; return 0;
} }
static inline int clr_config_lsm_se_context(const char *key, struct lxc_conf *c, static inline int clr_config_selinux_context(const char *key,
void *data) struct lxc_conf *c, void *data)
{ {
free(c->lsm_se_context); free(c->lsm_se_context);
c->lsm_se_context = NULL; c->lsm_se_context = NULL;

80
src/lxc/confile_network_legacy.c → src/lxc/confile_legacy.c
View File

@ -46,7 +46,7 @@
#include "config.h" #include "config.h"
#include "confile.h" #include "confile.h"
#include "confile_utils.h" #include "confile_utils.h"
#include "confile_network_legacy.h" #include "confile_legacy.h"
#include "utils.h" #include "utils.h"
#include "log.h" #include "log.h"
#include "conf.h" #include "conf.h"
@ -59,7 +59,7 @@
#include <../include/ifaddrs.h> #include <../include/ifaddrs.h>
#endif #endif
lxc_log_define(lxc_confile_network_legacy, lxc); lxc_log_define(lxc_confile_legacy, lxc);
/* /*
* Config entry is something like "lxc.network.0.ipv4" the key 'lxc.network.' * Config entry is something like "lxc.network.0.ipv4" the key 'lxc.network.'
@ -1003,3 +1003,79 @@ inline int clr_config_network_legacy(const char *key, struct lxc_conf *c, void *
{ {
return lxc_clear_config_network(c); return lxc_clear_config_network(c);
} }
inline int clr_config_lsm_aa_profile(const char *key, struct lxc_conf *c,
void *data)
{
free(c->lsm_aa_profile);
c->lsm_aa_profile = NULL;
return 0;
}
inline int clr_config_lsm_aa_incomplete(const char *key, struct lxc_conf *c,
void *data)
{
c->lsm_aa_allow_incomplete = 0;
return 0;
}
int get_config_lsm_aa_profile(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data)
{
return lxc_get_conf_str(retv, inlen, c->lsm_aa_profile);
}
int get_config_lsm_aa_incomplete(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data)
{
return lxc_get_conf_int(c, retv, inlen,
c->lsm_aa_allow_incomplete);
}
int set_config_lsm_aa_profile(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_string_item(&lxc_conf->lsm_aa_profile, value);
}
int set_config_lsm_aa_incomplete(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
/* Set config value to default. */
if (lxc_config_value_empty(value)) {
lxc_conf->lsm_aa_allow_incomplete = 0;
return 0;
}
/* Parse new config value. */
if (lxc_safe_uint(value, &lxc_conf->lsm_aa_allow_incomplete) < 0)
return -1;
if (lxc_conf->lsm_aa_allow_incomplete > 1) {
ERROR("Wrong value for lxc.lsm_aa_allow_incomplete. Can only "
"be set to 0 or 1");
return -1;
}
return 0;
}
int set_config_lsm_se_context(const char *key, const char *value,
struct lxc_conf *lxc_conf, void *data)
{
return set_config_string_item(&lxc_conf->lsm_se_context, value);
}
int get_config_lsm_se_context(const char *key, char *retv, int inlen,
struct lxc_conf *c, void *data)
{
return lxc_get_conf_str(retv, inlen, c->lsm_se_context);
}
inline int clr_config_lsm_se_context(const char *key, struct lxc_conf *c,
void *data)
{
free(c->lsm_se_context);
c->lsm_se_context = NULL;
return 0;
}

25
src/lxc/confile_network_legacy.h → src/lxc/confile_legacy.h
View File

@ -21,8 +21,8 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
#ifndef __LXC_CONFILE_NETWORK_LEGACY_H #ifndef __LXC_CONFILE_LEGACY_H
#define __LXC_CONFILE_NETWORK_LEGACY_H #define __LXC_CONFILE_LEGACY_H
#include <stdio.h> #include <stdio.h>
#include <lxc/attach_options.h> #include <lxc/attach_options.h>
@ -78,4 +78,23 @@ extern int lxc_list_nicconfigs_legacy(struct lxc_conf *c, const char *key,
extern int lxc_listconfigs(char *retv, int inlen); extern int lxc_listconfigs(char *retv, int inlen);
extern bool network_new_hwaddrs(struct lxc_conf *conf); extern bool network_new_hwaddrs(struct lxc_conf *conf);
#endif
extern int set_config_lsm_aa_profile(const char *, const char *,
struct lxc_conf *, void *);
extern int get_config_lsm_aa_profile(const char *, char *, int,
struct lxc_conf *, void *);
extern int clr_config_lsm_aa_profile(const char *, struct lxc_conf *, void *);
extern int set_config_lsm_aa_incomplete(const char *, const char *,
struct lxc_conf *, void *);
extern int get_config_lsm_aa_incomplete(const char *, char *, int,
struct lxc_conf *, void *);
extern int clr_config_lsm_aa_incomplete(const char *, struct lxc_conf *,
void *);
extern int set_config_lsm_se_context(const char *, const char *,
struct lxc_conf *, void *);
extern int get_config_lsm_se_context(const char *, char *, int,
struct lxc_conf *, void *);
extern int clr_config_lsm_se_context(const char *, struct lxc_conf *, void *);
#endif /* __LXC_CONFILE_LEGACY_H */

20
src/lxc/confile_utils.c
View File

@ -582,3 +582,23 @@ bool new_hwaddr(char *hwaddr)
return true; return true;
} }
int lxc_get_conf_str(char *retv, int inlen, const char *value)
{
if (!value)
return 0;
if (retv && inlen >= strlen(value) + 1)
strncpy(retv, value, strlen(value) + 1);
return strlen(value);
}
int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen, int v)
{
if (!retv)
inlen = 0;
else
memset(retv, 0, inlen);
return snprintf(retv, inlen, "%d", v);
}

2
src/lxc/confile_utils.h
View File

@ -81,5 +81,7 @@ extern int network_ifname(char **valuep, const char *value);
extern int rand_complete_hwaddr(char *hwaddr); extern int rand_complete_hwaddr(char *hwaddr);
extern void update_hwaddr(const char *line); extern void update_hwaddr(const char *line);
extern bool new_hwaddr(char *hwaddr); extern bool new_hwaddr(char *hwaddr);
extern int lxc_get_conf_str(char *retv, int inlen, const char *value);
extern int lxc_get_conf_int(struct lxc_conf *c, char *retv, int inlen, int v);
#endif /* __LXC_CONFILE_UTILS_H */ #endif /* __LXC_CONFILE_UTILS_H */

2
src/lxc/lxccontainer.c
View File

@ -47,7 +47,7 @@
#include "config.h" #include "config.h"
#include "commands.h" #include "commands.h"
#include "confile.h" #include "confile.h"
#include "confile_network_legacy.h" #include "confile_legacy.h"
#include "console.h" #include "console.h"
#include "criu.h" #include "criu.h"
#include "log.h" #include "log.h"

38
src/tests/parse_config_file.c
View File

@ -328,20 +328,54 @@ int main(int argc, char *argv[])
goto non_test_error; goto non_test_error;
} }
/* lxc.aa_profile */ /* REMOVE IN LXC 3.0
legacy security keys
*/
if (set_get_compare_clear_save_load(c, "lxc.aa_profile", "unconfined", if (set_get_compare_clear_save_load(c, "lxc.aa_profile", "unconfined",
tmpf, true) < 0) { tmpf, true) < 0) {
lxc_error("%s\n", "lxc.aa_profile"); lxc_error("%s\n", "lxc.aa_profile");
goto non_test_error; goto non_test_error;
} }
/* lxc.aa_allow_incomplete */ /* REMOVE IN LXC 3.0
legacy security keys
*/
if (set_get_compare_clear_save_load(c, "lxc.aa_allow_incomplete", "1", if (set_get_compare_clear_save_load(c, "lxc.aa_allow_incomplete", "1",
tmpf, true) < 0) { tmpf, true) < 0) {
lxc_error("%s\n", "lxc.aa_allow_incomplete"); lxc_error("%s\n", "lxc.aa_allow_incomplete");
goto non_test_error; goto non_test_error;
} }
/* REMOVE IN LXC 3.0
legacy security keys
*/
if (set_get_compare_clear_save_load(c, "lxc.se_context", "system_u:system_r:lxc_t:s0:c22",
tmpf, true) < 0) {
lxc_error("%s\n", "lxc.apparmor.se_context");
goto non_test_error;
}
/* lxc.apparmor.profile */
if (set_get_compare_clear_save_load(c, "lxc.apparmor.profile", "unconfined",
tmpf, true) < 0) {
lxc_error("%s\n", "lxc.apparmor.profile");
goto non_test_error;
}
/* lxc.apparmor.allow_incomplete */
if (set_get_compare_clear_save_load(c, "lxc.apparmor.allow_incomplete", "1",
tmpf, true) < 0) {
lxc_error("%s\n", "lxc.apparmor.allow_incomplete");
goto non_test_error;
}
/* lxc.selinux.context */
if (set_get_compare_clear_save_load(c, "lxc.selinux.context", "system_u:system_r:lxc_t:s0:c22",
tmpf, true) < 0) {
lxc_error("%s\n", "lxc.apparmor.selinux.context");
goto non_test_error;
}
/* lxc.cgroup.cpuset.cpus */ /* lxc.cgroup.cpuset.cpus */
if (set_get_compare_clear_save_load(c, "lxc.cgroup.cpuset.cpus", if (set_get_compare_clear_save_load(c, "lxc.cgroup.cpuset.cpus",
"1-100", tmpf, false) < 0) { "1-100", tmpf, false) < 0) {