Link: port to new ethtool ETHTOOL_xLINKSETTINGS

[elogind.git] / src / basic / proc-cmdline.c

diff --git a/src/basic/proc-cmdline.c b/src/basic/proc-cmdline.c
index 4a36d055e3e265584aafdcd712a72950998b0fbf..281833f883f86a09ac2b68ec44414abce5e53a00 100644 (file)
--- a/src/basic/proc-cmdline.c
+++ b/src/basic/proc-cmdline.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 /***
   This file is part of systemd.
 
@@ -19,6 +17,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
 #include "alloc-util.h"
 #include "extract-word.h"
 #include "fileio.h"
@@ -40,7 +42,9 @@ int proc_cmdline(char **ret) {
                 return read_one_line_file("/proc/cmdline", ret);
 }
 
-int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
+int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value, void *data),
+                       void *data,
+                       bool strip_prefix) {
         _cleanup_free_ char *line = NULL;
         const char *p;
         int r;
@@ -54,7 +58,7 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
         p = line;
         for (;;) {
                 _cleanup_free_ char *word = NULL;
-                char *value = NULL;
+                char *value = NULL, *unprefixed;
 
                 r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_RELAX);
                 if (r < 0)
@@ -64,14 +68,15 @@ int parse_proc_cmdline(int (*parse_item)(const char *key, const char *value)) {
 
                 /* Filter out arguments that are intended only for the
                  * initrd */
-                if (!in_initrd() && startswith(word, "rd."))
+                unprefixed = startswith(word, "rd.");
+                if (unprefixed && !in_initrd())
                         continue;
 
                 value = strchr(word, '=');
                 if (value)
                         *(value++) = 0;
 
-                r = parse_item(word, value);
+                r = parse_item(strip_prefix && unprefixed ? unprefixed : word, value, data);
                 if (r < 0)
                         return r;
         }
@@ -132,8 +137,7 @@ int get_proc_cmdline_key(const char *key, char **value) {
 
 }
 
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
 int shall_restore_state(void) {
         _cleanup_free_ char *value = NULL;
         int r;
@@ -160,17 +164,29 @@ static const char * const rlmap[] = {
         "3",         SPECIAL_MULTI_USER_TARGET,
         "4",         SPECIAL_MULTI_USER_TARGET,
         "5",         SPECIAL_GRAPHICAL_TARGET,
+        NULL
+};
+
+static const char * const rlmap_initrd[] = {
+        "emergency", SPECIAL_EMERGENCY_TARGET,
+        "rescue",    SPECIAL_RESCUE_TARGET,
+        NULL
 };
 
 const char* runlevel_to_target(const char *word) {
         size_t i;
+        const char * const *rlmap_ptr = in_initrd() ? rlmap_initrd
+                                                    : rlmap;
 
         if (!word)
                 return NULL;
 
-        for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
-                if (streq(word, rlmap[i]))
-                        return rlmap[i+1];
+        if (in_initrd() && (word = startswith(word, "rd.")) == NULL)
+                return NULL;
+
+        for (i = 0; rlmap_ptr[i] != NULL; i += 2)
+                if (streq(word, rlmap_ptr[i]))
+                        return rlmap_ptr[i+1];
 
         return NULL;
 }