From 2cb7e0aaedad73b076ea18c6900b0e86c5760d79 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 15:00:47 +0200 Subject: Adding upstream version 247.3. Signed-off-by: Daniel Baumann --- src/shared/volatile-util.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/shared/volatile-util.c (limited to 'src/shared/volatile-util.c') diff --git a/src/shared/volatile-util.c b/src/shared/volatile-util.c new file mode 100644 index 0000000..3323897 --- /dev/null +++ b/src/shared/volatile-util.c @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include + +#include "alloc-util.h" +#include "macro.h" +#include "parse-util.h" +#include "proc-cmdline.h" +#include "string-table.h" +#include "string-util.h" +#include "volatile-util.h" + +int query_volatile_mode(VolatileMode *ret) { + _cleanup_free_ char *mode = NULL; + int r; + + r = proc_cmdline_get_key("systemd.volatile", PROC_CMDLINE_VALUE_OPTIONAL, &mode); + if (r < 0) + return r; + if (r == 0) { + *ret = VOLATILE_NO; + return 0; + } + + if (mode) { + VolatileMode m; + + m = volatile_mode_from_string(mode); + if (m < 0) + return -EINVAL; + + *ret = m; + } else + *ret = VOLATILE_YES; + + return 1; +} + +static const char* const volatile_mode_table[_VOLATILE_MODE_MAX] = { + [VOLATILE_NO] = "no", + [VOLATILE_YES] = "yes", + [VOLATILE_STATE] = "state", + [VOLATILE_OVERLAY] = "overlay", +}; + +DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(volatile_mode, VolatileMode, VOLATILE_YES); -- cgit v1.2.3