src/basic/proc-cmdline.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   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, /* automatically strip "rd." prefix if it is set (and we are in the initrd, since otherwise we'd not consider it anyway) */
  10         PROC_CMDLINE_VALUE_OPTIONAL     = 1 << 1, /* the value is optional (for boolean switches that can omit the value) */
  11         PROC_CMDLINE_RD_STRICT          = 1 << 2, /* ignore this in the initrd */
  12         PROC_CMDLINE_IGNORE_EFI_OPTIONS = 1 << 3, /* don't check systemd's private EFI variable */
  13 } ProcCmdlineFlags;
  14
  15 typedef int (*proc_cmdline_parse_t)(const char *key, const char *value, void *data);
  16
  17 int proc_cmdline_filter_pid1_args(char **argv, char ***ret);
  18
  19 int proc_cmdline(char **ret);
  20 int proc_cmdline_strv(char ***ret);
  21
  22 int proc_cmdline_parse(const proc_cmdline_parse_t parse, void *userdata, ProcCmdlineFlags flags);
  23
  24 int proc_cmdline_get_key(const char *parameter, ProcCmdlineFlags flags, char **value);
  25 int proc_cmdline_get_bool(const char *key, bool *ret);
  26
  27 int proc_cmdline_get_key_many_internal(ProcCmdlineFlags flags, ...);
  28 #define proc_cmdline_get_key_many(flags, ...) proc_cmdline_get_key_many_internal(flags, __VA_ARGS__, NULL)
  29
  30 char *proc_cmdline_key_startswith(const char *s, const char *prefix);
  31 bool proc_cmdline_key_streq(const char *x, const char *y);
  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 }