From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/hibernate-resume/hibernate-resume.c | 83 +++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 src/hibernate-resume/hibernate-resume.c (limited to 'src/hibernate-resume/hibernate-resume.c') diff --git a/src/hibernate-resume/hibernate-resume.c b/src/hibernate-resume/hibernate-resume.c new file mode 100644 index 0000000..175a0bd --- /dev/null +++ b/src/hibernate-resume/hibernate-resume.c @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include +#include + +#include "devnum-util.h" +#include "hibernate-resume-config.h" +#include "hibernate-util.h" +#include "initrd-util.h" +#include "log.h" +#include "main-func.h" +#include "parse-util.h" +#include "static-destruct.h" + +static HibernateInfo arg_info = {}; + +STATIC_DESTRUCTOR_REGISTER(arg_info, hibernate_info_done); + +static int setup_hibernate_info_and_warn(void) { + int r; + + r = acquire_hibernate_info(&arg_info); + if (r == -ENODEV) { + log_info_errno(r, "No resume device found, exiting."); + return 0; + } + if (r < 0) + return r; + + compare_hibernate_location_and_warn(&arg_info); + + return 1; +} + +static int run(int argc, char *argv[]) { + struct stat st; + int r; + + log_setup(); + + if (argc < 1 || argc > 3) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program expects zero, one, or two arguments."); + + umask(0022); + + if (!in_initrd()) + return 0; + + if (argc > 1) { + arg_info.device = argv[1]; + + if (argc == 3) { + r = safe_atou64(argv[2], &arg_info.offset); + if (r < 0) + return log_error_errno(r, "Failed to parse resume offset %s: %m", argv[2]); + } + } else { + r = setup_hibernate_info_and_warn(); + if (r <= 0) + return r; + + if (arg_info.efi) + clear_efi_hibernate_location(); + } + + if (stat(arg_info.device, &st) < 0) + return log_error_errno(errno, "Failed to stat resume device '%s': %m", arg_info.device); + + if (!S_ISBLK(st.st_mode)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Resume device '%s' is not a block device.", arg_info.device); + + /* The write shall not return if a resume takes place. */ + r = write_resume_config(st.st_rdev, arg_info.offset, arg_info.device); + log_full_errno(r < 0 ? LOG_ERR : LOG_DEBUG, + r < 0 ? r : SYNTHETIC_ERRNO(ENOENT), + "Unable to resume from device '%s' (" DEVNUM_FORMAT_STR ") offset %" PRIu64 ", continuing boot process.", + arg_info.device, DEVNUM_FORMAT_VAL(st.st_rdev), arg_info.offset); + + return r; +} + +DEFINE_MAIN_FUNCTION(run); -- cgit v1.2.3