* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#endif
#include <errno.h>
#include <seccomp.h>
#include <stdio.h>
#include <sys/mount.h>
#include <sys/utsname.h>
+#include "af_unix.h"
+#include "commands.h"
#include "config.h"
#include "log.h"
+#include "lxccontainer.h"
#include "lxcseccomp.h"
+#include "mainloop.h"
+#include "memory_utils.h"
#include "utils.h"
#ifdef __MIPSEL__
#define MIPS_ARCH_N64 lxc_seccomp_arch_mips64
#endif
-lxc_log_define(lxc_seccomp, lxc);
+lxc_log_define(seccomp, lxc);
static int parse_config_v1(FILE *f, char *line, size_t *line_bufsz, struct lxc_conf *conf)
{
}
#if HAVE_SCMP_FILTER_CTX
- ret = seccomp_rule_add(conf->seccomp_ctx, SCMP_ACT_ALLOW, nr, 0);
+ ret = seccomp_rule_add(conf->seccomp.seccomp_ctx, SCMP_ACT_ALLOW, nr, 0);
#else
ret = seccomp_rule_add(SCMP_ACT_ALLOW, nr, 0);
#endif
return "trap";
case SCMP_ACT_ERRNO(0):
return "errno";
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ case SCMP_ACT_NOTIFY:
+ return "notify";
+#endif
}
return "invalid action";
ret_action = SCMP_ACT_ALLOW;
} else if (strncmp(line, "trap", 4) == 0) {
ret_action = SCMP_ACT_TRAP;
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ } else if (strncmp(line, "notify", 6) == 0) {
+ ret_action = SCMP_ACT_NOTIFY;
+#endif
+ } else if (line[0]) {
+ ERROR("Unrecognized seccomp action \"%s\"", line);
+ return -2;
}
return ret_action;
/*
* This function is used to parse the args string into the structure.
- * args string format:[index,value,op,valueTwo] or [index,value,op]
+ * args string format:[index,value,op,mask] or [index,value,op]
* index: the index for syscall arguments (type uint)
* value: the value for syscall arguments (type uint64)
* op: the operator for syscall arguments(string),
a valid list of constants as of libseccomp v2.3.2 is
SCMP_CMP_NE,SCMP_CMP_LE,SCMP_CMP_LE, SCMP_CMP_EQ, SCMP_CMP_GE,
SCMP_CMP_GT, SCMP_CMP_MASKED_EQ, or !=,<=,==,>=,>,&=
- * valueTwo: the value for syscall arguments only used for mask eq (type uint64, optional)
+ * mask: the mask to apply on "value" for SCMP_CMP_MASKED_EQ (type uint64, optional)
* Returns 0 on success, < 0 otherwise.
*/
static int get_seccomp_arg_value(char *key, struct seccomp_v2_rule_args *rule_args)
uint64_t mask = 0, value = 0;
enum scmp_compare op = 0;
char *tmp = NULL;
- char s[31] = {0}, v[24] = {0}, m[24] = {0};
+ char s[31] = {0}, v[24] = {0}, m[24] = {'0'};
tmp = strchr(key, '[');
if (!tmp) {
return -1;
}
- ret = lxc_safe_uint64(v, &value);
+ ret = lxc_safe_uint64(v, &value, 0);
if (ret < 0) {
ERROR("Invalid argument value");
return -1;
}
- ret = lxc_safe_uint64(m, &mask);
+ ret = lxc_safe_uint64(m, &mask, 0);
if (ret < 0) {
ERROR("Invalid argument mask");
return -1;
if (rules->action == -1) {
ERROR("Failed to interpret action");
ret = -1;
- goto out;
+ goto on_error;
}
ret = 0;
rules->args_num = 0;
if (!strchr(tmp, '['))
- goto out;
+ goto on_error;
ret = -1;
for ((key = strtok_r(tmp, "]", &saveptr)), i = 0; key && i < 6;
(key = strtok_r(NULL, "]", &saveptr)), i++) {
ret = get_seccomp_arg_value(key, &rules->args_value[i]);
if (ret < 0)
- goto out;
+ goto on_error;
rules->args_num++;
}
ret = 0;
-out:
+on_error:
free(tmp);
return ret;
ret = seccomp_attr_set(ctx, SCMP_FLTATR_CTL_NNP, 0);
if (ret < 0) {
- ERROR("%s - Failed to turn off no-new-privs", strerror(-ret));
+ errno = -ret;
+ SYSERROR("Failed to turn off no-new-privs");
seccomp_release(ctx);
return NULL;
}
#ifdef SCMP_FLTATR_ATL_TSKIP
ret = seccomp_attr_set(ctx, SCMP_FLTATR_ATL_TSKIP, 1);
- if (ret < 0)
- WARN("%s - Failed to turn on seccomp nop-skip, continuing", strerror(-ret));
+ if (ret < 0) {
+ errno = -ret;
+ SYSWARN("Failed to turn on seccomp nop-skip, continuing");
+ }
#endif
ret = seccomp_arch_exist(ctx, arch);
if (ret < 0) {
if (ret != -EEXIST) {
- ERROR("%s - Failed to determine whether arch %d is "
- "already present in the main seccomp context",
- strerror(-ret), (int)n_arch);
+ errno = -ret;
+ SYSERROR("Failed to determine whether arch %d is "
+ "already present in the main seccomp context",
+ (int)n_arch);
seccomp_release(ctx);
return NULL;
}
ret = seccomp_arch_add(ctx, arch);
if (ret != 0) {
- ERROR("%s - Failed to add arch %d to main seccomp context",
- strerror(-ret), (int)n_arch);
+ errno = -ret;
+ SYSERROR("Failed to add arch %d to main seccomp context",
+ (int)n_arch);
seccomp_release(ctx);
return NULL;
}
ret = seccomp_arch_exist(ctx, arch);
if (arch && ret != 0) {
- ERROR("%s - Seccomp: rule and context arch do not match (arch %d)", strerror(-ret), arch);
+ errno = -ret;
+ SYSERROR("Seccomp: rule and context arch do not match (arch %d)", arch);
return false;
}
SCMP_SYS(umount2), 1,
SCMP_A1(SCMP_CMP_MASKED_EQ, MNT_FORCE, MNT_FORCE));
if (ret < 0) {
- ERROR("%s - Failed loading rule to reject force umount", strerror(-ret));
+ errno = -ret;
+ SYSERROR("Failed loading rule to reject force umount");
return false;
}
nr = seccomp_syscall_resolve_name(line);
if (nr == __NR_SCMP_ERROR) {
WARN("Failed to resolve syscall \"%s\"", line);
- WARN("This syscall will NOT be blacklisted");
+ WARN("This syscall will NOT be handled by seccomp");
return true;
}
if (nr < 0) {
WARN("Got negative return value %d for syscall \"%s\"", nr, line);
- WARN("This syscall will NOT be blacklisted");
+ WARN("This syscall will NOT be handled by seccomp");
return true;
}
ret = seccomp_rule_add_exact_array(ctx, rule->action, nr,
rule->args_num, arg_cmp);
if (ret < 0) {
- ERROR("%s - Failed loading rule for %s (nr %d action %d (%s))",
- strerror(-ret), line, nr, rule->action,
- get_action_name(rule->action));
+ errno = -ret;
+ SYSERROR("Failed loading rule for %s (nr %d action %d (%s))",
+ line, nr, rule->action, get_action_name(rule->action));
return false;
}
}
if (default_policy_action != SCMP_ACT_KILL) {
- ret = seccomp_reset(conf->seccomp_ctx, default_policy_action);
+ ret = seccomp_reset(conf->seccomp.seccomp_ctx, default_policy_action);
if (ret != 0) {
ERROR("Error re-initializing Seccomp");
return -1;
}
- ret = seccomp_attr_set(conf->seccomp_ctx, SCMP_FLTATR_CTL_NNP, 0);
+ ret = seccomp_attr_set(conf->seccomp.seccomp_ctx, SCMP_FLTATR_CTL_NNP, 0);
if (ret < 0) {
- ERROR("%s - Failed to turn off no-new-privs", strerror(-ret));
+ errno = -ret;
+ SYSERROR("Failed to turn off no-new-privs");
return -1;
}
#ifdef SCMP_FLTATR_ATL_TSKIP
- ret = seccomp_attr_set(conf->seccomp_ctx, SCMP_FLTATR_ATL_TSKIP, 1);
- if (ret < 0)
- WARN("%s - Failed to turn on seccomp nop-skip, continuing", strerror(-ret));
+ ret = seccomp_attr_set(conf->seccomp.seccomp_ctx, SCMP_FLTATR_ATL_TSKIP, 1);
+ if (ret < 0) {
+ errno = -ret;
+ SYSWARN("Failed to turn on seccomp nop-skip, continuing");
+ }
#endif
}
}
cur_rule_arch = lxc_seccomp_arch_s390x;
+ }
#endif
- } else {
+ else {
goto bad_arch;
}
goto bad_rule;
}
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if ((rule.action == SCMP_ACT_NOTIFY) &&
+ !conf->seccomp.notifier.wants_supervision) {
+ ret = seccomp_attr_set(conf->seccomp.seccomp_ctx,
+ SCMP_FLTATR_NEW_LISTENER, 1);
+ if (ret)
+ goto bad_rule;
+
+ conf->seccomp.notifier.wants_supervision = true;
+ TRACE("Set SCMP_FLTATR_NEW_LISTENER attribute");
+ }
+#endif
+
if (!do_resolve_add_rule(SCMP_ARCH_NATIVE, line,
- conf->seccomp_ctx, &rule))
+ conf->seccomp.seccomp_ctx, &rule))
goto bad_rule;
INFO("Added native rule for arch %d for %s action %d(%s)",
INFO("Merging compat seccomp contexts into main context");
if (ctx.contexts[0]) {
if (ctx.needs_merge[0]) {
- ret = seccomp_merge(conf->seccomp_ctx, ctx.contexts[0]);
+ ret = seccomp_merge(conf->seccomp.seccomp_ctx, ctx.contexts[0]);
if (ret < 0) {
ERROR("Failed to merge first compat seccomp "
"context into main context");
if (ctx.contexts[1]) {
if (ctx.needs_merge[1]) {
- ret = seccomp_merge(conf->seccomp_ctx, ctx.contexts[1]);
+ ret = seccomp_merge(conf->seccomp.seccomp_ctx, ctx.contexts[1]);
if (ret < 0) {
ERROR("Failed to merge first compat seccomp "
"context into main context");
if (ctx.contexts[2]) {
if (ctx.needs_merge[2]) {
- ret = seccomp_merge(conf->seccomp_ctx, ctx.contexts[2]);
+ ret = seccomp_merge(conf->seccomp.seccomp_ctx, ctx.contexts[2]);
if (ret < 0) {
ERROR("Failed to merge third compat seccomp "
"context into main context");
* 1. seccomp is not enabled in the kernel
* 2. a seccomp policy is already enabled for this task
*/
-static bool use_seccomp(void)
+static bool use_seccomp(const struct lxc_conf *conf)
{
int ret, v;
FILE *f;
char *line = NULL;
bool already_enabled = false, found = false;
+ if (conf->seccomp.allow_nesting > 0)
+ return true;
+
f = fopen("/proc/self/status", "r");
if (!f)
return true;
int lxc_read_seccomp_config(struct lxc_conf *conf)
{
- int check_seccomp_attr_set, ret;
+ int ret;
FILE *f;
- if (!conf->seccomp)
+ if (!conf->seccomp.seccomp)
return 0;
- if (!use_seccomp())
+ if (!use_seccomp(conf))
return 0;
#if HAVE_SCMP_FILTER_CTX
/* XXX for debug, pass in SCMP_ACT_TRAP */
- conf->seccomp_ctx = seccomp_init(SCMP_ACT_KILL);
- ret = !conf->seccomp_ctx;
+ conf->seccomp.seccomp_ctx = seccomp_init(SCMP_ACT_KILL);
+ ret = !conf->seccomp.seccomp_ctx;
#else
ret = seccomp_init(SCMP_ACT_KILL) < 0;
#endif
/* turn off no-new-privs. We don't want it in lxc, and it breaks
* with apparmor */
#if HAVE_SCMP_FILTER_CTX
- check_seccomp_attr_set = seccomp_attr_set(conf->seccomp_ctx, SCMP_FLTATR_CTL_NNP, 0);
+ ret = seccomp_attr_set(conf->seccomp.seccomp_ctx, SCMP_FLTATR_CTL_NNP, 0);
#else
- check_seccomp_attr_set = seccomp_attr_set(SCMP_FLTATR_CTL_NNP, 0);
+ ret = seccomp_attr_set(SCMP_FLTATR_CTL_NNP, 0);
#endif
- if (check_seccomp_attr_set) {
- ERROR("%s - Failed to turn off no-new-privs", strerror(-check_seccomp_attr_set));
+ if (ret < 0) {
+ errno = -ret;
+ SYSERROR("Failed to turn off no-new-privs");
return -1;
}
+
#ifdef SCMP_FLTATR_ATL_TSKIP
- check_seccomp_attr_set = seccomp_attr_set(conf->seccomp_ctx, SCMP_FLTATR_ATL_TSKIP, 1);
- if (check_seccomp_attr_set < 0)
- WARN("%s - Failed to turn on seccomp nop-skip, continuing",
- strerror(-check_seccomp_attr_set));
+ ret = seccomp_attr_set(conf->seccomp.seccomp_ctx, SCMP_FLTATR_ATL_TSKIP, 1);
+ if (ret < 0) {
+ errno = -ret;
+ SYSWARN("Failed to turn on seccomp nop-skip, continuing");
+ }
#endif
- f = fopen(conf->seccomp, "r");
+ f = fopen(conf->seccomp.seccomp, "r");
if (!f) {
- SYSERROR("Failed to open seccomp policy file %s", conf->seccomp);
+ SYSERROR("Failed to open seccomp policy file %s", conf->seccomp.seccomp);
return -1;
}
{
int ret;
- if (!conf->seccomp)
+ if (!conf->seccomp.seccomp)
return 0;
- if (!use_seccomp())
+ if (!use_seccomp(conf))
return 0;
#if HAVE_SCMP_FILTER_CTX
- ret = seccomp_load(conf->seccomp_ctx);
+ ret = seccomp_load(conf->seccomp.seccomp_ctx);
#else
ret = seccomp_load();
#endif
if (ret < 0) {
- ERROR("%s- Error loading the seccomp policy", strerror(-ret));
+ errno = -ret;
+ SYSERROR("Error loading the seccomp policy");
return -1;
}
if ((lxc_log_get_level() <= LXC_LOG_LEVEL_TRACE ||
conf->loglevel <= LXC_LOG_LEVEL_TRACE) &&
lxc_log_fd >= 0) {
- ret = seccomp_export_pfc(conf->seccomp_ctx, lxc_log_fd);
+ ret = seccomp_export_pfc(conf->seccomp.seccomp_ctx, lxc_log_fd);
/* Just give an warning when export error */
- if (ret < 0)
- WARN("%s - Failed to export seccomp filter to log file", strerror(-ret));
+ if (ret < 0) {
+ errno = -ret;
+ SYSWARN("Failed to export seccomp filter to log file");
+ }
+ }
+#endif
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if (conf->seccomp.notifier.wants_supervision) {
+ ret = seccomp_notify_fd(conf->seccomp.seccomp_ctx);
+ if (ret < 0) {
+ errno = -ret;
+ return -1;
+ }
+
+ conf->seccomp.notifier.notify_fd = ret;
+ TRACE("Retrieved new seccomp listener fd %d", ret);
}
#endif
return 0;
}
-void lxc_seccomp_free(struct lxc_conf *conf)
+void lxc_seccomp_free(struct lxc_seccomp *seccomp)
{
- free(conf->seccomp);
- conf->seccomp = NULL;
+ free_disarm(seccomp->seccomp);
#if HAVE_SCMP_FILTER_CTX
- if (conf->seccomp_ctx) {
- seccomp_release(conf->seccomp_ctx);
- conf->seccomp_ctx = NULL;
+ if (seccomp->seccomp_ctx) {
+ seccomp_release(seccomp->seccomp_ctx);
+ seccomp->seccomp_ctx = NULL;
}
#endif
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ close_prot_errno_disarm(seccomp->notifier.notify_fd);
+ close_prot_errno_disarm(seccomp->notifier.proxy_fd);
+ seccomp_notif_free(seccomp->notifier.req_buf, seccomp->notifier.rsp_buf);
+ seccomp->notifier.req_buf = NULL;
+ seccomp->notifier.rsp_buf = NULL;
+#endif
+}
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+static int seccomp_notify_reconnect(struct lxc_handler *handler)
+{
+ __do_close_prot_errno int notify_fd = -EBADF;
+
+ close_prot_errno_disarm(handler->conf->seccomp.notifier.proxy_fd);
+
+ notify_fd = lxc_unix_connect(&handler->conf->seccomp.notifier.proxy_addr);
+ if (notify_fd < 0) {
+ SYSERROR("Failed to reconnect to seccomp proxy");
+ return -1;
+ }
+
+ /* 30 second timeout */
+ if (lxc_socket_set_timeout(notify_fd, 30, 30)) {
+ SYSERROR("Failed to set socket timeout");
+ return -1;
+ }
+ handler->conf->seccomp.notifier.proxy_fd = move_fd(notify_fd);
+ return 0;
+}
+#endif
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+static int seccomp_notify_default_answer(int fd, struct seccomp_notif *req,
+ struct seccomp_notif_resp *resp,
+ struct lxc_handler *handler)
+{
+ resp->id = req->id;
+ resp->error = -ENOSYS;
+
+ if (seccomp_notify_respond(fd, resp))
+ SYSERROR("Failed to send default message to seccomp");
+
+ return seccomp_notify_reconnect(handler);
+}
+#endif
+
+int seccomp_notify_handler(int fd, uint32_t events, void *data,
+ struct lxc_epoll_descr *descr)
+{
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ __do_close_prot_errno int fd_mem = -EBADF;
+ int reconnect_count, ret;
+ ssize_t bytes;
+ char mem_path[6 /* /proc/ */
+ + INTTYPE_TO_STRLEN(int64_t)
+ + 3 /* mem */
+ + 1 /* \0 */];
+ struct lxc_handler *hdlr = data;
+ struct lxc_conf *conf = hdlr->conf;
+ struct seccomp_notif *req = conf->seccomp.notifier.req_buf;
+ struct seccomp_notif_resp *resp = conf->seccomp.notifier.rsp_buf;
+ int listener_proxy_fd = conf->seccomp.notifier.proxy_fd;
+ struct seccomp_notify_proxy_msg msg = {0};
+
+ if (listener_proxy_fd < 0) {
+ ERROR("No seccomp proxy registered");
+ return minus_one_set_errno(EINVAL);
+ }
+
+ ret = seccomp_notify_receive(fd, req);
+ if (ret) {
+ SYSERROR("Failed to read seccomp notification");
+ goto out;
+ }
+
+ snprintf(mem_path, sizeof(mem_path), "/proc/%d/mem", req->pid);
+ fd_mem = open(mem_path, O_RDONLY | O_CLOEXEC);
+ if (fd_mem < 0) {
+ (void)seccomp_notify_default_answer(fd, req, resp, hdlr);
+ SYSERROR("Failed to open process memory for seccomp notify request");
+ goto out;
+ }
+
+ /*
+ * Make sure that the fd for /proc/<pid>/mem we just opened still
+ * refers to the correct process's memory.
+ */
+ ret = seccomp_notify_id_valid(fd, req->id);
+ if (ret < 0) {
+ (void)seccomp_notify_default_answer(fd, req, resp, hdlr);
+ SYSERROR("Invalid seccomp notify request id");
+ goto out;
+ }
+
+ memcpy(&msg.req, req, sizeof(msg.req));
+ msg.monitor_pid = hdlr->monitor_pid;
+ msg.init_pid = hdlr->pid;
+
+ reconnect_count = 0;
+ do {
+ bytes = lxc_unix_send_fds(listener_proxy_fd, &fd_mem, 1, &msg,
+ sizeof(msg));
+ if (bytes != (ssize_t)sizeof(msg)) {
+ SYSERROR("Failed to forward message to seccomp proxy");
+ if (seccomp_notify_default_answer(fd, req, resp, hdlr))
+ goto out;
+ }
+ } while (reconnect_count++);
+
+ close_prot_errno_disarm(fd_mem);
+
+ reconnect_count = 0;
+ do {
+ bytes = lxc_recv_nointr(listener_proxy_fd, &msg, sizeof(msg), 0);
+ if (bytes != (ssize_t)sizeof(msg)) {
+ SYSERROR("Failed to receive message from seccomp proxy");
+ if (seccomp_notify_default_answer(fd, req, resp, hdlr))
+ goto out;
+ }
+ } while (reconnect_count++);
+
+ memcpy(resp, &msg.resp, sizeof(*resp));
+ ret = seccomp_notify_respond(fd, resp);
+ if (ret)
+ SYSERROR("Failed to send seccomp notification");
+
+out:
+ return 0;
+#else
+ return -ENOSYS;
+#endif
+}
+
+void seccomp_conf_init(struct lxc_conf *conf)
+{
+ conf->seccomp.seccomp = NULL;
+#if HAVE_SCMP_FILTER_CTX
+ conf->seccomp.allow_nesting = 0;
+ memset(&conf->seccomp.seccomp_ctx, 0, sizeof(conf->seccomp.seccomp_ctx));
+#endif /* HAVE_SCMP_FILTER_CTX */
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ conf->seccomp.notifier.wants_supervision = false;
+ conf->seccomp.notifier.notify_fd = -EBADF;
+ conf->seccomp.notifier.proxy_fd = -EBADF;
+ memset(&conf->seccomp.notifier.proxy_addr, 0,
+ sizeof(conf->seccomp.notifier.proxy_addr));
+ conf->seccomp.notifier.req_buf = NULL;
+ conf->seccomp.notifier.rsp_buf = NULL;
+#endif
+}
+
+int lxc_seccomp_setup_proxy(struct lxc_seccomp *seccomp,
+ struct lxc_epoll_descr *descr,
+ struct lxc_handler *handler)
+{
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if (seccomp->notifier.wants_supervision &&
+ seccomp->notifier.proxy_addr.sun_path[1] != '\0') {
+ __do_close_prot_errno int notify_fd = -EBADF;
+ int ret;
+
+ notify_fd = lxc_unix_connect(&seccomp->notifier.proxy_addr);
+ if (notify_fd < 0) {
+ SYSERROR("Failed to connect to seccomp proxy");
+ return -1;
+ }
+
+ /* 30 second timeout */
+ ret = lxc_socket_set_timeout(notify_fd, 30, 30);
+ if (ret) {
+ SYSERROR("Failed to set timeouts for seccomp proxy");
+ return -1;
+ }
+
+ ret = seccomp_notify_alloc(&seccomp->notifier.req_buf,
+ &seccomp->notifier.rsp_buf);
+ if (ret) {
+ ERROR("Failed to allocate seccomp notify request and response buffers");
+ errno = ret;
+ return -1;
+ }
+
+ ret = lxc_mainloop_add_handler(descr,
+ seccomp->notifier.notify_fd,
+ seccomp_notify_handler, handler);
+ if (ret < 0) {
+ ERROR("Failed to add seccomp notify handler for %d to mainloop",
+ notify_fd);
+ return -1;
+ }
+
+ seccomp->notifier.proxy_fd = move_fd(notify_fd);
+ }
+#endif
+ return 0;
+}
+
+int lxc_seccomp_send_notifier_fd(struct lxc_seccomp *seccomp, int socket_fd)
+{
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if (seccomp->notifier.wants_supervision) {
+ if (lxc_abstract_unix_send_fds(socket_fd,
+ &seccomp->notifier.notify_fd, 1,
+ NULL, 0) < 0)
+ return -1;
+ close_prot_errno_disarm(seccomp->notifier.notify_fd);
+ }
+#endif
+ return 0;
+}
+
+int lxc_seccomp_recv_notifier_fd(struct lxc_seccomp *seccomp, int socket_fd)
+{
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if (seccomp->notifier.wants_supervision) {
+ int ret;
+
+ ret = lxc_abstract_unix_recv_fds(socket_fd,
+ &seccomp->notifier.notify_fd,
+ 1, NULL, 0);
+ if (ret < 0)
+ return -1;
+ }
+#endif
+ return 0;
+}
+
+int lxc_seccomp_add_notifier(const char *name, const char *lxcpath,
+ struct lxc_seccomp *seccomp)
+{
+
+#if HAVE_DECL_SECCOMP_NOTIF_GET_FD
+ if (seccomp->notifier.wants_supervision) {
+ int ret;
+
+ ret = lxc_cmd_seccomp_notify_add_listener(name, lxcpath,
+ seccomp->notifier.notify_fd,
+ -1, 0);
+ close_prot_errno_disarm(seccomp->notifier.notify_fd);
+ if (ret < 0)
+ return -1;
+ }
+#endif
+ return 0;
}
projects / mirror_lxc.git / blobdiff