src/basic/proc-cmdline.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5
   6 #include "log.h"
   7
   8 typedef enum ProcCmdlineFlags {
   9         PROC_CMDLINE_STRIP_RD_PREFIX = 1 << 0,
  10         PROC_CMDLINE_VALUE_OPTIONAL  = 1 << 1,
  11         PROC_CMDLINE_RD_STRICT       = 1 << 2,
  12 } ProcCmdlineFlags;
  13
  14 typedef int (*proc_cmdline_parse_t)(const char *key, const char *value, void *data);
  15
  16 int proc_cmdline(char **ret);
  17
  18 int proc_cmdline_parse_given(const char *line, proc_cmdline_parse_t parse_item, void *data, ProcCmdlineFlags flags);
  19 int proc_cmdline_parse(const proc_cmdline_parse_t parse, void *userdata, ProcCmdlineFlags flags);
  20
  21 int proc_cmdline_get_key(const char *parameter, ProcCmdlineFlags flags, char **value);
  22 int proc_cmdline_get_bool(const char *key, bool *ret);
  23
  24 int proc_cmdline_get_key_many_internal(ProcCmdlineFlags flags, ...);
  25 #define proc_cmdline_get_key_many(flags, ...) proc_cmdline_get_key_many_internal(flags, __VA_ARGS__, NULL)
  26
  27 char *proc_cmdline_key_startswith(const char *s, const char *prefix);
  28 bool proc_cmdline_key_streq(const char *x, const char *y);
  29
  30 int shall_restore_state(void);
  31 const char* runlevel_to_target(const char *rl);
  32
  33 /* A little helper call, to be used in proc_cmdline_parse_t callbacks */
  34 static inline bool proc_cmdline_value_missing(const char *key, const char *value) {
  35         if (!value) {
  36                 log_warning("Missing argument for %s= kernel command line switch, ignoring.", key);
  37                 return true;
  38         }
  39
  40         return false;
  41 }