09835de3cc
And do not use it in the IMPORT{cmdline} udev code. Wherever we expose
direct interfaces to check the kernel cmdline, let's not consult our
systemd-specific EFI variable, but strictly use the actual kernel
variable, because that's what we claim we do. i.e. it's fine to use the
EFI variable for our own settings, but for the generic APIs to the
kernel cmdline we should not use it.
Specifically, this applies to IMPORT{cmdline} and
ConditionKernelCommandLine=. In the latter case we weren#t checking the
EFI variable anyway, hence let's do the same for the udev case, too.
Fixes: #15739
40 lines
1.7 KiB
C
40 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#include <stdbool.h>
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#include "log.h"
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typedef enum ProcCmdlineFlags {
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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) */
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PROC_CMDLINE_VALUE_OPTIONAL = 1 << 1, /* the value is optional (for boolean switches that can omit the value) */
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PROC_CMDLINE_RD_STRICT = 1 << 2, /* ignore this in the initrd */
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PROC_CMDLINE_IGNORE_EFI_OPTIONS = 1 << 3, /* don't check systemd's private EFI variable */
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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(char **ret);
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int proc_cmdline_parse_given(const char *line, proc_cmdline_parse_t parse_item, void *data, ProcCmdlineFlags flags);
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int proc_cmdline_parse(const proc_cmdline_parse_t parse, void *userdata, ProcCmdlineFlags flags);
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int proc_cmdline_get_key(const char *parameter, ProcCmdlineFlags flags, char **value);
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int proc_cmdline_get_bool(const char *key, 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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static inline bool proc_cmdline_value_missing(const char *key, const char *value) {
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if (!value) {
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log_warning("Missing argument for %s= kernel command line switch, ignoring.", key);
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return true;
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}
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return false;
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}
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