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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "alloc-util.h"
#include "fileio-label.h"
#include "selinux-util.h"
#include "time-util.h"
#define MESSAGE \
"# This file was created by systemd-update-done. Its only \n" \
"# purpose is to hold a timestamp of the time this directory\n" \
"# was updated. See man:systemd-update-done.service(8).\n"
static int apply_timestamp(const char *path, struct timespec *ts) {
_cleanup_free_ char *message = NULL;
int r;
/*
* We store the timestamp both as mtime of the file and in the file itself,
* to support filesystems which cannot store nanosecond-precision timestamps.
*/
if (asprintf(&message,
MESSAGE
"TIMESTAMP_NSEC=" NSEC_FMT "\n",
timespec_load_nsec(ts)) < 0)
return log_oom();
r = write_string_file_full_label(AT_FDCWD, path, message, WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC, ts);
if (r == -EROFS)
log_debug_errno(r, "Cannot create \"%s\", file system is read-only.", path);
else if (r < 0)
return log_error_errno(r, "Failed to write \"%s\": %m", path);
return 0;
}
int main(int argc, char *argv[]) {
struct stat st;
int r, q = 0;
log_setup();
if (stat("/usr", &st) < 0) {
log_error_errno(errno, "Failed to stat /usr: %m");
return EXIT_FAILURE;
}
r = mac_init();
if (r < 0)
return EXIT_FAILURE;
r = apply_timestamp("/etc/.updated", &st.st_mtim);
q = apply_timestamp("/var/.updated", &st.st_mtim);
return r < 0 || q < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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