* GNU General Public License for more details.
*/
+#define _GNU_SOURCE
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <unistd.h>
#include <stdint.h>
+#include <stdio.h>
#include <fcntl.h>
#include <pwd.h>
#include <libgen.h>
INSTANCE_ATTR_USER,
INSTANCE_ATTR_STDOUT,
INSTANCE_ATTR_STDERR,
+ INSTANCE_ATTR_NO_NEW_PRIVS,
INSTANCE_ATTR_JAIL,
INSTANCE_ATTR_TRACE,
INSTANCE_ATTR_SECCOMP,
+ INSTANCE_ATTR_PIDFILE,
__INSTANCE_ATTR_MAX
};
[INSTANCE_ATTR_USER] = { "user", BLOBMSG_TYPE_STRING },
[INSTANCE_ATTR_STDOUT] = { "stdout", BLOBMSG_TYPE_BOOL },
[INSTANCE_ATTR_STDERR] = { "stderr", BLOBMSG_TYPE_BOOL },
+ [INSTANCE_ATTR_NO_NEW_PRIVS] = { "no_new_privs", BLOBMSG_TYPE_BOOL },
[INSTANCE_ATTR_JAIL] = { "jail", BLOBMSG_TYPE_TABLE },
[INSTANCE_ATTR_TRACE] = { "trace", BLOBMSG_TYPE_BOOL },
[INSTANCE_ATTR_SECCOMP] = { "seccomp", BLOBMSG_TYPE_STRING },
+ [INSTANCE_ATTR_PIDFILE] = { "pidfile", BLOBMSG_TYPE_STRING },
};
enum {
JAIL_ATTR_NAME,
- JAIL_ATTR_ROOT,
+ JAIL_ATTR_HOSTNAME,
JAIL_ATTR_PROCFS,
JAIL_ATTR_SYSFS,
JAIL_ATTR_UBUS,
JAIL_ATTR_LOG,
+ JAIL_ATTR_RONLY,
JAIL_ATTR_MOUNT,
__JAIL_ATTR_MAX,
};
static const struct blobmsg_policy jail_attr[__JAIL_ATTR_MAX] = {
[JAIL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING },
- [JAIL_ATTR_ROOT] = { "root", BLOBMSG_TYPE_STRING },
+ [JAIL_ATTR_HOSTNAME] = { "hostname", BLOBMSG_TYPE_STRING },
[JAIL_ATTR_PROCFS] = { "procfs", BLOBMSG_TYPE_BOOL },
[JAIL_ATTR_SYSFS] = { "sysfs", BLOBMSG_TYPE_BOOL },
[JAIL_ATTR_UBUS] = { "ubus", BLOBMSG_TYPE_BOOL },
[JAIL_ATTR_LOG] = { "log", BLOBMSG_TYPE_BOOL },
+ [JAIL_ATTR_RONLY] = { "ronly", BLOBMSG_TYPE_BOOL },
[JAIL_ATTR_MOUNT] = { "mount", BLOBMSG_TYPE_TABLE },
};
{ "data", RLIMIT_DATA },
{ "fsize", RLIMIT_FSIZE },
{ "memlock", RLIMIT_MEMLOCK },
- { "msgqueue", RLIMIT_MSGQUEUE },
- { "nice", RLIMIT_NICE },
{ "nofile", RLIMIT_NOFILE },
{ "nproc", RLIMIT_NPROC },
{ "rss", RLIMIT_RSS },
+ { "stack", RLIMIT_STACK },
+#ifdef linux
+ { "nice", RLIMIT_NICE },
{ "rtprio", RLIMIT_RTPRIO },
+ { "msgqueue", RLIMIT_MSGQUEUE },
{ "sigpending", RLIMIT_SIGPENDING },
- { "stack", RLIMIT_STACK },
+#endif
{ NULL, 0 }
};
argv[argc++] = jail->name;
}
- if (jail->root) {
- argv[argc++] = "-P";
- argv[argc++] = jail->root;
+ if (jail->hostname) {
+ argv[argc++] = "-h";
+ argv[argc++] = jail->hostname;
}
if (in->seccomp) {
argv[argc++] = in->seccomp;
}
+ if (in->no_new_privs)
+ argv[argc++] = "-c";
+
if (jail->procfs)
argv[argc++] = "-p";
if (jail->log)
argv[argc++] = "-l";
+ if (jail->ronly)
+ argv[argc++] = "-o";
+
blobmsg_list_for_each(&jail->mount, var) {
const char *type = blobmsg_data(var->data);
return argc;
}
+static int
+instance_removepid(struct service_instance *in) {
+ if (!in->pidfile)
+ return 0;
+ if (unlink(in->pidfile)) {
+ ERROR("Failed to removed pidfile: %s: %d - %s\n",
+ in->pidfile, errno, strerror(errno));
+ return 1;
+ }
+ return 0;
+}
+
+static int
+instance_writepid(struct service_instance *in)
+{
+ FILE *_pidfile;
+
+ if (!in->pidfile) {
+ return 0;
+ }
+ _pidfile = fopen(in->pidfile, "w");
+ if (_pidfile == NULL) {
+ ERROR("failed to open pidfile for writing: %s: %d (%s)",
+ in->pidfile, errno, strerror(errno));
+ return 1;
+ }
+ if (fprintf(_pidfile, "%d\n", in->proc.pid) < 0) {
+ ERROR("failed to write pidfile: %s: %d (%s)",
+ in->pidfile, errno, strerror(errno));
+ return 2;
+ }
+ if (fclose(_pidfile)) {
+ ERROR("failed to close pidfile: %s: %d (%s)",
+ in->pidfile, errno, strerror(errno));
+ return 3;
+ }
+
+ return 0;
+}
+
static void
instance_run(struct service_instance *in, int _stdout, int _stderr)
{
struct blobmsg_list_node *var;
struct blob_attr *cur;
char **argv;
+ char *ld_preload;
int argc = 1; /* NULL terminated */
int rem, _stdin;
+ bool seccomp = !in->trace && !in->has_jail && in->seccomp;
+ bool setlbf = _stdout >= 0;
if (in->nice)
setpriority(PRIO_PROCESS, 0, in->nice);
blobmsg_list_for_each(&in->env, var)
setenv(blobmsg_name(var->data), blobmsg_data(var->data), 1);
- if (!in->trace && !in->has_jail && in->seccomp) {
+ if (seccomp)
setenv("SECCOMP_FILE", in->seccomp, 1);
- setenv("LD_PRELOAD", "/lib/libpreload-seccomp.so", 1);
- }
+
+ if ((seccomp || setlbf) && asprintf(&ld_preload, "LD_PRELOAD=%s%s%s",
+ seccomp ? "/lib/libpreload-seccomp.so" : "",
+ seccomp && setlbf ? ":" : "",
+ setlbf ? "/lib/libsetlbf.so" : "") > 0)
+ putenv(ld_preload);
blobmsg_list_for_each(&in->limits, var)
instance_limits(blobmsg_name(var->data), blobmsg_data(var->data));
exit(127);
}
+static void
+instance_free_stdio(struct service_instance *in)
+{
+ if (in->_stdout.fd.fd > -1) {
+ ustream_free(&in->_stdout.stream);
+ close(in->_stdout.fd.fd);
+ in->_stdout.fd.fd = -1;
+ }
+
+ if (in->_stderr.fd.fd > -1) {
+ ustream_free(&in->_stderr.stream);
+ close(in->_stderr.fd.fd);
+ in->_stderr.fd.fd = -1;
+ }
+}
+
void
instance_start(struct service_instance *in)
{
if (in->proc.pending)
return;
+ instance_free_stdio(in);
if (in->_stdout.fd.fd > -2) {
if (pipe(opipe)) {
ULOG_WARN("pipe() failed: %d (%s)\n", errno, strerror(errno));
return;
}
- DEBUG(2, "Started instance %s::%s\n", in->srv->name, in->name);
+ DEBUG(2, "Started instance %s::%s[%d]\n", in->srv->name, in->name, pid);
in->proc.pid = pid;
+ instance_writepid(in);
clock_gettime(CLOCK_MONOTONIC, &in->start);
uloop_process_add(&in->proc);
uloop_timeout_cancel(&in->timeout);
if (in->halt) {
- /* no action */
+ instance_removepid(in);
} else if (in->restart) {
instance_start(in);
} else if (in->respawn) {
in->halt = true;
in->restart = in->respawn = false;
kill(in->proc.pid, SIGTERM);
+ instance_removepid(in);
}
static void
in->halt = false;
in->restart = true;
kill(in->proc.pid, SIGTERM);
+ instance_removepid(in);
}
static bool
if (in->gid != in_new->gid)
return true;
+ if (in->pidfile && in_new->pidfile)
+ if (strcmp(in->pidfile, in_new->pidfile))
+ return true;
+
+ if (in->pidfile && !in_new->pidfile)
+ return true;
+
+ if (!in->pidfile && in_new->pidfile)
+ return true;
+
if (!blobmsg_list_equal(&in->limits, &in_new->limits))
return true;
jail->name = blobmsg_get_string(tb[JAIL_ATTR_NAME]);
jail->argc += 2;
}
- if (tb[JAIL_ATTR_ROOT]) {
- jail->root = blobmsg_get_string(tb[JAIL_ATTR_ROOT]);
+ if (tb[JAIL_ATTR_HOSTNAME]) {
+ jail->hostname = blobmsg_get_string(tb[JAIL_ATTR_HOSTNAME]);
jail->argc += 2;
}
if (tb[JAIL_ATTR_PROCFS]) {
jail->log = blobmsg_get_bool(tb[JAIL_ATTR_LOG]);
jail->argc++;
}
+ if (tb[JAIL_ATTR_RONLY]) {
+ jail->ronly = blobmsg_get_bool(tb[JAIL_ATTR_RONLY]);
+ jail->argc++;
+ }
if (tb[JAIL_ATTR_MOUNT]) {
struct blob_attr *cur;
int rem;
if (tb[INSTANCE_ATTR_TRACE])
in->trace = blobmsg_get_bool(tb[INSTANCE_ATTR_TRACE]);
+ if (tb[INSTANCE_ATTR_NO_NEW_PRIVS])
+ in->no_new_privs = blobmsg_get_bool(tb[INSTANCE_ATTR_NO_NEW_PRIVS]);
+
if (!in->trace && tb[INSTANCE_ATTR_SECCOMP]) {
char *seccomp = blobmsg_get_string(tb[INSTANCE_ATTR_SECCOMP]);
struct stat s;
else
in->seccomp = seccomp;
}
+
+ if (tb[INSTANCE_ATTR_PIDFILE]) {
+ char *pidfile = blobmsg_get_string(tb[INSTANCE_ATTR_PIDFILE]);
+ if (pidfile)
+ in->pidfile = pidfile;
+ }
+
if (!in->trace && tb[INSTANCE_ATTR_JAIL])
in->has_jail = instance_jail_parse(in, tb[INSTANCE_ATTR_JAIL]);
blobmsg_list_move(&in->jail.mount, &in_src->jail.mount);
in->trigger = in_src->trigger;
in->command = in_src->command;
+ in->pidfile = in_src->pidfile;
in->name = in_src->name;
in->node.avl.key = in_src->node.avl.key;
void
instance_free(struct service_instance *in)
{
- if (in->_stdout.fd.fd > -1) {
- ustream_free(&in->_stdout.stream);
- close(in->_stdout.fd.fd);
- }
-
- if (in->_stderr.fd.fd > -1) {
- ustream_free(&in->_stderr.stream);
- close(in->_stderr.fd.fd);
- }
-
+ instance_free_stdio(in);
uloop_process_delete(&in->proc);
uloop_timeout_cancel(&in->timeout);
trigger_del(in);
if (in->trace)
blobmsg_add_u8(b, "trace", true);
+ if (in->no_new_privs)
+ blobmsg_add_u8(b, "no_new_privs", true);
+
if (in->seccomp)
blobmsg_add_string(b, "seccomp", in->seccomp);
+ if (in->pidfile)
+ blobmsg_add_string(b, "pidfile", in->pidfile);
+
if (in->has_jail) {
void *r = blobmsg_open_table(b, "jail");
if (in->jail.name)
blobmsg_add_string(b, "name", in->jail.name);
- if (in->jail.root)
- blobmsg_add_string(b, "root", in->jail.root);
+ if (in->jail.hostname)
+ blobmsg_add_string(b, "hostname", in->jail.hostname);
blobmsg_add_u8(b, "procfs", in->jail.procfs);
blobmsg_add_u8(b, "sysfs", in->jail.sysfs);
blobmsg_add_u8(b, "ubus", in->jail.ubus);
blobmsg_add_u8(b, "log", in->jail.log);
+ blobmsg_add_u8(b, "ronly", in->jail.ronly);
blobmsg_close_table(b, r);
if (!avl_is_empty(&in->jail.mount.avl)) {
struct blobmsg_list_node *var;
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