random-seed: add little tool for saving/loading random seed on shutdown/boot, but...

[elogind.git] / src / socket.c

diff --git a/src/socket.c b/src/socket.c
index 2da3215a3d3ed12d76615bd2c35ad87818391ed5..d76a81ff993b8aaeddc22a539c13176d6fac6733 100644 (file)
--- a/src/socket.c
+++ b/src/socket.c
@@ -27,7 +27,6 @@
 #include <sys/epoll.h>
 #include <signal.h>
 #include <arpa/inet.h>
-#include <selinux/selinux.h>
 
 #include "unit.h"
 #include "socket.h"
@@ -41,6 +40,7 @@
 #include "missing.h"
 #include "special.h"
 #include "bus-errors.h"
+#include "label.h"
 
 static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
         [SOCKET_DEAD] = UNIT_INACTIVE,
@@ -166,6 +166,7 @@ static int socket_instantiate_service(Socket *s) {
         if (r < 0)
                 return r;
 
+        u->meta.no_gc = true;
         s->service = SERVICE(u);
         return 0;
 }
@@ -297,7 +298,7 @@ static int socket_add_default_dependencies(Socket *s) {
                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
                         return r;
 
-        return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
+        return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
 }
 
 static int socket_load(Unit *u) {
@@ -445,14 +446,14 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
                 if (p->type == SOCKET_SOCKET) {
                         const char *t;
                         int r;
-                        char *k;
+                        char *k = NULL;
 
                         if ((r = socket_address_print(&p->address, &k)) < 0)
                                 t = strerror(-r);
                         else
                                 t = k;
 
-                        fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), k);
+                        fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), t);
                         free(k);
                 } else
                         fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
@@ -653,89 +654,25 @@ static void socket_apply_fifo_options(Socket *s, int fd) {
                         log_warning("F_SETPIPE_SZ: %m");
 }
 
-static int selinux_getconfromexe(
-                const char *exe,
-                security_context_t *newcon) {
-
-        security_context_t mycon = NULL, fcon = NULL;
-        security_class_t sclass;
-        int r = 0;
-
-        r = getcon(&mycon);
-        if (r < 0)
-                goto fail;
-
-        r = getfilecon(exe, &fcon);
-        if (r < 0)
-                goto fail;
-
-        sclass = string_to_security_class("process");
-        r = security_compute_create(mycon, fcon, sclass, newcon);
-
-fail:
-        if (r < 0)
-                r = -errno;
-
-        freecon(mycon);
-        freecon(fcon);
-        return r;
-}
-
-static int selinux_getfileconfrompath(
-                const security_context_t scon,
-                const char *path,
-                const char *class,
-                security_context_t *fcon) {
-
-        security_context_t dir_con = NULL;
-        security_class_t sclass;
-        int r = 0;
-
-        r = getfilecon(path, &dir_con);
-        if (r >= 0) {
-                r = -1;
-                if ((sclass = string_to_security_class(class)) != 0)
-                        r = security_compute_create(scon, dir_con, sclass, fcon);
-        }
-        if (r < 0)
-                r = -errno;
-
-        freecon(dir_con);
-        return r;
-}
 
 static int fifo_address_create(
                 const char *path,
                 mode_t directory_mode,
                 mode_t socket_mode,
-                security_context_t scon,
+                const char *label,
                 int *_fd) {
 
         int fd = -1, r = 0;
         struct stat st;
         mode_t old_mask;
-        security_context_t filecon = NULL;
 
         assert(path);
         assert(_fd);
 
         mkdir_parents(path, directory_mode);
 
-        if (scon) {
-                if (scon && ((r = selinux_getfileconfrompath(scon, path, "fifo_file", &filecon)) == 0)) {
-                        r = setfscreatecon(filecon);
-
-                        if (r < 0) {
-                                log_error("Failed to set SELinux file context (%s) on %s: %m", scon, path);
-                                r = -errno;
-                        }
-
-                        freecon(filecon);
-                }
-
-                if (r < 0  && security_getenforce() == 1)
-                        goto fail;
-        }
+        if ((r = label_fifofile_set(label, path)) < 0)
+                goto fail;
 
         /* Enforce the right access mode for the fifo */
         old_mask = umask(~ socket_mode);
@@ -756,7 +693,7 @@ static int fifo_address_create(
                 goto fail;
         }
 
-        setfscreatecon(NULL);
+        label_file_clear();
 
         if (fstat(fd, &st) < 0) {
                 r = -errno;
@@ -776,7 +713,8 @@ static int fifo_address_create(
         return 0;
 
 fail:
-        setfscreatecon(NULL);
+        label_file_clear();
+
         if (fd >= 0)
                 close_nointr_nofail(fd);
 
@@ -786,20 +724,16 @@ fail:
 static int socket_open_fds(Socket *s) {
         SocketPort *p;
         int r;
-        security_context_t scon = NULL;
+        char *label = NULL;
 
         assert(s);
 
         if ((r = socket_instantiate_service(s)) < 0)
                 return r;
 
-        if (selinux_getconfromexe(s->service->exec_command[SERVICE_EXEC_START]->path, &scon) < 0) {
-                log_error("Failed to get SELinux exec context for %s \n", s->service->exec_command[SERVICE_EXEC_START]->path);
-                if (security_getenforce() == 1)
-                        return -errno;
-        }
+        if ((r = label_get_socket_label_from_exe(s->service->exec_command[SERVICE_EXEC_START]->path, &label)) < 0)
+                return r;
 
-        log_debug("SELinux Socket context for %s set to %s\n", s->service->exec_command[SERVICE_EXEC_START]->path, scon);
         LIST_FOREACH(port, p, s->ports) {
 
                 if (p->fd >= 0)
@@ -815,7 +749,7 @@ static int socket_open_fds(Socket *s) {
                                              s->free_bind,
                                              s->directory_mode,
                                              s->socket_mode,
-                                             scon,
+                                             label,
                                              &p->fd)) < 0)
                                 goto rollback;
 
@@ -827,7 +761,7 @@ static int socket_open_fds(Socket *s) {
                                              p->path,
                                              s->directory_mode,
                                              s->socket_mode,
-                                             scon,
+                                             label,
                                              &p->fd)) < 0)
                                 goto rollback;
 
@@ -837,12 +771,12 @@ static int socket_open_fds(Socket *s) {
                         assert_not_reached("Unknown port type");
         }
 
-        freecon(scon);
+        label_free(label);
         return 0;
 
 rollback:
         socket_close_fds(s);
-        freecon(scon);
+        label_free(label);
         return r;
 }
 
@@ -1270,6 +1204,8 @@ static void socket_enter_running(Socket *s, int cfd) {
                 s->service = NULL;
                 s->n_accepted ++;
 
+                service->meta.no_gc = false;
+
                 unit_choose_id(UNIT(service), name);
                 free(name);
 
@@ -1439,7 +1375,6 @@ static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
 
 static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
         Socket *s = SOCKET(u);
-        int r;
 
         assert(u);
         assert(key);
@@ -1464,14 +1399,14 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value,
         } else if (streq(key, "n-accepted")) {
                 unsigned k;
 
-                if ((r = safe_atou(value, &k)) < 0)
+                if (safe_atou(value, &k) < 0)
                         log_debug("Failed to parse n-accepted value %s", value);
                 else
                         s->n_accepted += k;
         } else if (streq(key, "control-pid")) {
                 pid_t pid;
 
-                if ((r = parse_pid(value, &pid)) < 0)
+                if (parse_pid(value, &pid) < 0)
                         log_debug("Failed to parse control-pid value %s", value);
                 else
                         s->control_pid = pid;
@@ -1730,7 +1665,7 @@ int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
                 if (p->fd >= 0)
                         rn_fds++;
 
-        if (!(rfds = new(int, rn_fds)) < 0)
+        if (!(rfds = new(int, rn_fds)))
                 return -ENOMEM;
 
         k = 0;