X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Funit-printf.c;h=98274ee35d41fabe3c749d131ba2efb0c965e38f;hb=4e6db59202ad2dbbef56a69985643390ffdd57bd;hp=7430beb3da1598ddaf1faca3f3d5a951d6db4236;hpb=0591220f339c313761f9a208e88fb719db566993;p=elogind.git

diff --git a/src/core/unit-printf.c b/src/core/unit-printf.c
index 7430beb3d..98274ee35 100644
--- a/src/core/unit-printf.c
+++ b/src/core/unit-printf.c
@@ -190,28 +190,37 @@ static char *specifier_user_shell(char specifier, void *data, void *userdata) {
         ExecContext *c;
         int r;
         const char *username, *shell;
+        char *ret;
 
         assert(u);
 
         c = unit_get_exec_context(u);
 
-        /* return HOME if set, otherwise from passwd */
-        if (!c || !c->user) {
-                char *sh;
+        if (c && c->user)
+                username = c->user;
+        else
+                username = "root";
 
-                r = get_shell(&sh);
-                if (r < 0)
-                        return strdup("/bin/sh");
+        /* return /bin/sh for root, otherwise the value from passwd */
+        r = get_user_creds(&username, NULL, NULL, NULL, &shell);
+        if (r < 0) {
+                log_warning_unit(u->id,
+                                 "Failed to determine shell: %s",
+                                 strerror(-r));
+                return NULL;
+        }
 
-                return sh;
+        if (!path_is_absolute(shell)) {
+                log_warning_unit(u->id,
+                                 "Shell %s is not absolute, ignoring.",
+                                 shell);
         }
 
-        username = c->user;
-        r = get_user_creds(&username, NULL, NULL, NULL, &shell);
-        if (r < 0)
-                return strdup("/bin/sh");
+        ret = strdup(shell);
+        if (!ret)
+                log_oom();
 
-        return strdup(shell);
+        return ret;
 }
 
 char *unit_name_printf(Unit *u, const char* format) {
@@ -250,12 +259,13 @@ char *unit_full_printf(Unit *u, const char *format) {
          * %r root cgroup path of this systemd instance (e.g. "/user/lennart/shared/systemd-4711")
          * %R parent of root cgroup path (e.g. "/usr/lennart/shared")
          * %t the runtime directory to place sockets in (e.g. "/run" or $XDG_RUNTIME_DIR)
+         * %U the UID of the configured user or running user
          * %u the username of the configured user or running user
          * %h the homedir of the configured user or running user
          * %s the shell of the configured user or running user
          * %m the machine ID of the running system
-         * %b the boot ID of the running system
          * %H the host name of the running system
+         * %b the boot ID of the running system
          */
 
         const Specifier table[] = {
@@ -282,7 +292,6 @@ char *unit_full_printf(Unit *u, const char *format) {
                 { 0, NULL, NULL }
         };
 
-        assert(u);
         assert(format);
 
         return specifier_printf(format, table, u);