X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Funit-printf.c;h=7415824cdfc1a0cfc7be6811bac96a38b110fbf3;hb=8e70580bb07ae46dc0b0bf377de6333540668acc;hp=cbae45d9f75c2f2db756982acac52f7154ef4772;hpb=67445f4e22ad924394acdd4fd49e6f238244a5ca;p=elogind.git

diff --git a/src/core/unit-printf.c b/src/core/unit-printf.c
index cbae45d9f..7415824cd 100644
--- a/src/core/unit-printf.c
+++ b/src/core/unit-printf.c
@@ -26,6 +26,7 @@
 #include "strv.h"
 #include "unit-name.h"
 #include "unit-printf.h"
+#include "macro.h"
 
 static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
         Unit *u = userdata;
@@ -123,24 +124,36 @@ static char *specifier_user_name(char specifier, void *data, void *userdata) {
         ExecContext *c;
         int r;
         const char *username;
+        char _cleanup_free_ *tmp = NULL;
+        uid_t uid;
+        char *printed = NULL;
 
         assert(u);
 
         c = unit_get_exec_context(u);
-        if (!c)
-                return NULL;
 
-        /* get USER env from our own env if set */
-        if (!c->user)
-                return getusername_malloc();
+        if (c && c->user)
+                username = c->user;
+        else
+                /* get USER env from env or our own uid */
+                username = tmp = getusername_malloc();
 
         /* fish username from passwd */
-        username = c->user;
-        r = get_user_creds(&username, NULL, NULL, NULL, NULL);
+        r = get_user_creds(&username, &uid, NULL, NULL, NULL);
         if (r < 0)
                 return NULL;
 
-        return strdup(username);
+        switch (specifier) {
+                case 'U':
+                        if (asprintf(&printed, "%d", uid) < 0)
+                                return NULL;
+                        break;
+                case 'u':
+                        printed = strdup(username);
+                        break;
+        }
+
+        return printed;
 }
 
 static char *specifier_user_home(char specifier, void *data, void *userdata) {
@@ -152,11 +165,9 @@ static char *specifier_user_home(char specifier, void *data, void *userdata) {
         assert(u);
 
         c = unit_get_exec_context(u);
-        if (!c)
-                return NULL;
 
         /* return HOME if set, otherwise from passwd */
-        if (!c->user) {
+        if (!c || !c->user) {
                 char *h;
 
                 r = get_home_dir(&h);
@@ -183,11 +194,9 @@ static char *specifier_user_shell(char specifier, void *data, void *userdata) {
         assert(u);
 
         c = unit_get_exec_context(u);
-        if (!c)
-                return NULL;
 
         /* return HOME if set, otherwise from passwd */
-        if (!c->user) {
+        if (!c || !c->user) {
                 char *sh;
 
                 r = get_shell(&sh);
@@ -205,42 +214,6 @@ static char *specifier_user_shell(char specifier, void *data, void *userdata) {
         return strdup(shell);
 }
 
-static char *specifier_machine_id(char specifier, void *data, void *userdata) {
-        sd_id128_t id;
-        char *buf;
-        int r;
-
-        r = sd_id128_get_machine(&id);
-        if (r < 0)
-                return NULL;
-
-        buf = new(char, 33);
-        if (!buf)
-                return NULL;
-
-        return sd_id128_to_string(id, buf);
-}
-
-static char *specifier_boot_id(char specifier, void *data, void *userdata) {
-        sd_id128_t id;
-        char *buf;
-        int r;
-
-        r = sd_id128_get_boot(&id);
-        if (r < 0)
-                return NULL;
-
-        buf = new(char, 33);
-        if (!buf)
-                return NULL;
-
-        return sd_id128_to_string(id, buf);
-}
-
-static char *specifier_host_name(char specifier, void *data, void *userdata) {
-        return gethostname_malloc();
-}
-
 char *unit_name_printf(Unit *u, const char* format) {
 
         /*
@@ -277,12 +250,13 @@ 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[] = {
@@ -298,6 +272,7 @@ char *unit_full_printf(Unit *u, const char *format) {
                 { 'r', specifier_cgroup_root,         NULL },
                 { 'R', specifier_cgroup_root,         NULL },
                 { 't', specifier_runtime,             NULL },
+                { 'U', specifier_user_name,           NULL },
                 { 'u', specifier_user_name,           NULL },
                 { 'h', specifier_user_home,           NULL },
                 { 's', specifier_user_shell,          NULL },
@@ -308,7 +283,6 @@ char *unit_full_printf(Unit *u, const char *format) {
                 { 0, NULL, NULL }
         };
 
-        assert(u);
         assert(format);
 
         return specifier_printf(format, table, u);