Zbigniew Jędrzejewski-Szmek
2d2dc38f00
Inspired by the discussion in #41161. Also change the order of flags to be more logical. First the option to specify at what fields we look, then the option to specify how we return their name, the the value, and finally what to do if the value is missing.
38 lines
2.0 KiB
C
38 lines
2.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "basic-forward.h"
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typedef enum ProcCmdlineFlags {
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PROC_CMDLINE_RD_STRICT = 1 << 0, /* Only look at options with the "rd." prefix when in the initrd and only
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* at options without the prefix when not in the initrd.
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*/
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PROC_CMDLINE_STRIP_RD_PREFIX = 1 << 1, /* Automatically strip "rd." prefix if we are in the initrd.
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* When this is specified, the handler function must check for unprefixed
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* option names. */
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PROC_CMDLINE_VALUE_OPTIONAL = 1 << 2, /* The value is optional (for boolean switches that can omit the value). */
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PROC_CMDLINE_TRUE_WHEN_MISSING = 1 << 3, /* Make proc_cmdline_get_bool() return true instead of false (the default)
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* when the key is not present on the command line. */
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} ProcCmdlineFlags;
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typedef int (*proc_cmdline_parse_t)(const char *key, const char *value, void *data);
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int proc_cmdline_filter_pid1_args(char **argv, char ***ret);
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int proc_cmdline(char **ret);
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int proc_cmdline_strv(char ***ret);
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int proc_cmdline_parse(proc_cmdline_parse_t parse, void *userdata, ProcCmdlineFlags flags);
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int proc_cmdline_get_key(const char *key, ProcCmdlineFlags flags, char **ret_value);
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int proc_cmdline_get_bool(const char *key, ProcCmdlineFlags flags, bool *ret);
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int proc_cmdline_get_key_many_internal(ProcCmdlineFlags flags, ...);
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#define proc_cmdline_get_key_many(flags, ...) proc_cmdline_get_key_many_internal(flags, __VA_ARGS__, NULL)
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char* proc_cmdline_key_startswith(const char *s, const char *prefix);
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bool proc_cmdline_key_streq(const char *x, const char *y);
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/* A little helper call, to be used in proc_cmdline_parse_t callbacks */
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bool proc_cmdline_value_missing(const char *key, const char *value);
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