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hibernate-util: remove unused code

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All callers of write_resume_config() pass non-NULL device.
This commit is contained in:
Mike Yuan 2023-12-27 22:22:21 +08:00
parent 66b9956082
commit 6e819bd2bd
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GPG key ID: 417471C0A40F58B3
1 changed files with 5 additions and 12 deletions
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17
src/shared/hibernate-util.c
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@ -475,30 +475,23 @@ int hibernation_is_safe(void) {
int write_resume_config(dev_t devno, uint64_t offset, const char *device) {
char offset_str[DECIMAL_STR_MAX(uint64_t)];
_cleanup_free_ char *path = NULL;
const char *devno_str;
int r;
assert(devno > 0);
assert(device);
devno_str = FORMAT_DEVNUM(devno);
xsprintf(offset_str, "%" PRIu64, offset);
if (!device) {
r = device_path_make_canonical(S_IFBLK, devno, &path);
if (r < 0)
return log_error_errno(r,
"Failed to format canonical device path for devno '" DEVNUM_FORMAT_STR "': %m",
DEVNUM_FORMAT_VAL(devno));
device = path;
}
/* We write the offset first since it's safer. Note that this file is only available in 4.17+, so
* fail gracefully if it doesn't exist and we're only overwriting it with 0. */
r = write_string_file("/sys/power/resume_offset", offset_str, WRITE_STRING_FILE_DISABLE_BUFFER);
if (r == -ENOENT) {
if (offset != 0)
return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
"Can't configure hibernation offset %" PRIu64 ", kernel does not support /sys/power/resume_offset. Refusing.",
offset);
"Can't configure swap file offset %s, kernel does not support /sys/power/resume_offset. Refusing.",
offset_str);
log_warning_errno(r, "/sys/power/resume_offset is unavailable, skipping writing swap file offset.");
} else if (r < 0)