45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include "alloc-util.h"
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#include "macro.h"
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#include "parse-util.h"
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#include "proc-cmdline.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "volatile-util.h"
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int query_volatile_mode(VolatileMode *ret) {
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_cleanup_free_ char *mode = NULL;
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VolatileMode m = VOLATILE_NO;
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int r;
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r = proc_cmdline_get_key("systemd.volatile", PROC_CMDLINE_VALUE_OPTIONAL, &mode);
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if (r < 0)
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return r;
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if (r == 0)
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goto finish;
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if (mode) {
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m = volatile_mode_from_string(mode);
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if (m < 0)
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return -EINVAL;
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} else
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m = VOLATILE_YES;
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r = 1;
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finish:
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*ret = m;
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return r;
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}
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static const char* const volatile_mode_table[_VOLATILE_MODE_MAX] = {
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[VOLATILE_NO] = "no",
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[VOLATILE_YES] = "yes",
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[VOLATILE_STATE] = "state",
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};
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DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(volatile_mode, VolatileMode, VOLATILE_YES);
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