c413bb28df
In various cases, we would say 'return log_warning()' or 'return log_error()'. Those functions return 0 if no error is passed in. For log_warning or log_error this doesn't make sense, and we generally want to propagate the error. In the few cases where the error should be ignored, I think it's better to split it in two, and call 'return 0' on a separate line.
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "fileio-label.h"
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#include "selinux-util.h"
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#include "time-util.h"
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#define MESSAGE \
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"# This file was created by systemd-update-done. Its only \n" \
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"# purpose is to hold a timestamp of the time this directory\n" \
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"# was updated. See man:systemd-update-done.service(8).\n"
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static int apply_timestamp(const char *path, struct timespec *ts) {
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_cleanup_free_ char *message = NULL;
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int r;
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/*
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* We store the timestamp both as mtime of the file and in the file itself,
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* to support filesystems which cannot store nanosecond-precision timestamps.
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*/
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if (asprintf(&message,
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MESSAGE
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"TIMESTAMP_NSEC=" NSEC_FMT "\n",
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timespec_load_nsec(ts)) < 0)
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return log_oom();
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r = write_string_file_atomic_label_ts(path, message, ts);
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if (r == -EROFS)
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return log_debug_errno(r, "Cannot create \"%s\", file system is read-only.", path);
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if (r < 0)
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return log_error_errno(r, "Failed to write \"%s\": %m", path);
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return 0;
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}
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int main(int argc, char *argv[]) {
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struct stat st;
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int r, q = 0;
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log_setup_service();
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if (stat("/usr", &st) < 0) {
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log_error_errno(errno, "Failed to stat /usr: %m");
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return EXIT_FAILURE;
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}
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r = mac_selinux_init();
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if (r < 0)
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return EXIT_FAILURE;
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r = apply_timestamp("/etc/.updated", &st.st_mtim);
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q = apply_timestamp("/var/.updated", &st.st_mtim);
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return r < 0 || q < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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