src/basic/proc-cmdline.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010 Lennart Poettering
   8 ***/
   9
  10 #include <stdbool.h>
  11
  12 #include "log.h"
  13
  14 enum {
  15         PROC_CMDLINE_STRIP_RD_PREFIX = 1,
  16         PROC_CMDLINE_VALUE_OPTIONAL = 2,
  17 };
  18
  19 typedef int (*proc_cmdline_parse_t)(const char *key, const char *value, void *data);
  20
  21 int proc_cmdline(char **ret);
  22
  23 int proc_cmdline_parse(const proc_cmdline_parse_t parse, void *userdata, unsigned flags);
  24
  25 int proc_cmdline_get_key(const char *parameter, unsigned flags, char **value);
  26 int proc_cmdline_get_bool(const char *key, bool *ret);
  27
  28 char *proc_cmdline_key_startswith(const char *s, const char *prefix);
  29 bool proc_cmdline_key_streq(const char *x, const char *y);
  30
  31 int shall_restore_state(void);
  32 const char* runlevel_to_target(const char *rl);
  33
  34 /* A little helper call, to be used in proc_cmdline_parse_t callbacks */
  35 static inline bool proc_cmdline_value_missing(const char *key, const char *value) {
  36         if (!value) {
  37                 log_warning("Missing argument for %s= kernel command line switch, ignoring.", key);
  38                 return true;
  39         }
  40
  41         return false;
  42 }