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https://github.com/systemd/systemd
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hibernate-resume: introduce --clear for clearing hibernate storage var
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89c727e0f4
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8f8e481f03
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@ -17,6 +17,7 @@
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#include "terminal-util.h"
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static HibernateInfo arg_info = {};
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static bool arg_clear = false;
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STATIC_DESTRUCTOR_REGISTER(arg_info, hibernate_info_done);
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@ -32,6 +33,7 @@ static int help(void) {
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"\n%sInitiate resume from hibernation.%s\n\n"
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" -h --help Show this help\n"
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" --version Show package version\n"
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" --clear Clear hibernation storage information from EFI and exit\n"
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"\nSee the %s for details.\n",
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program_invocation_short_name,
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ansi_highlight(),
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@ -45,11 +47,13 @@ static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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ARG_CLEAR,
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{ "clear", no_argument, NULL, ARG_CLEAR },
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{}
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};
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@ -68,6 +72,10 @@ static int parse_argv(int argc, char *argv[]) {
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case ARG_VERSION:
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return version();
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case ARG_CLEAR:
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arg_clear = true;
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break;
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case '?':
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return -EINVAL;
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@ -75,6 +83,10 @@ static int parse_argv(int argc, char *argv[]) {
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assert_not_reached();
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}
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if (argc > optind && arg_clear)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"Extraneous arguments specified with --clear, refusing.");
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return 1;
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}
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@ -94,6 +106,24 @@ static int setup_hibernate_info_and_warn(void) {
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return 1;
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}
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static int action_clear(void) {
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int r;
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assert(arg_clear);
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/* Let's insist that the system identifier is verified still. After all if things don't match,
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* the resume wouldn't get triggered in the first place. We should not erase the var if booted
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* from LiveCD/portable systems/... */
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r = get_efi_hibernate_location(/* ret = */ NULL);
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if (r <= 0)
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return r;
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r = clear_efi_hibernate_location_and_warn();
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if (r > 0)
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log_notice("Successfully cleared HibernateLocation EFI variable.");
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return r;
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}
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static int run(int argc, char *argv[]) {
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struct stat st;
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int r;
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@ -109,8 +139,12 @@ static int run(int argc, char *argv[]) {
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umask(0022);
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if (arg_clear)
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return action_clear();
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if (!in_initrd())
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return 0;
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return log_error_errno(SYNTHETIC_ERRNO(ENOTRECOVERABLE),
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"Not running in initrd, refusing to initiate resume from hibernation.");
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if (argc <= optind) {
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r = setup_hibernate_info_and_warn();
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