ssize_t wr;
int r;
- if (isempty(dmesg) || size == 0)
+ if (size == 0)
return 0;
+ assert(dmesg);
+
ofd_path = path_join(arg_archivedir, id, "dmesg.txt");
if (!ofd_path)
return log_oom();
static void process_dmesg_files(PStoreList *list) {
/* Move files, reconstruct dmesg.txt */
_cleanup_free_ char *dmesg = NULL, *dmesg_id = NULL;
- size_t dmesg_size = 0;
+ size_t dmesg_size = 0, dmesg_allocated = 0;
+ bool dmesg_bad = false;
PStoreEntry *pe;
/* Handle each dmesg file: files processed in reverse
/* Now move file from pstore to archive storage */
move_file(pe, pe_id);
+ if (dmesg_bad)
+ continue;
+
/* If the current record id is NOT the same as the
* previous record id, then start a new dmesg.txt file */
- if (!pe_id || !dmesg_id || !streq(pe_id, dmesg_id)) {
+ if (!streq_ptr(pe_id, dmesg_id)) {
/* Encountered a new dmesg group, close out old one, open new one */
- if (dmesg) {
- (void) write_dmesg(dmesg, dmesg_size, dmesg_id);
- dmesg = mfree(dmesg);
- dmesg_size = 0;
- }
+ (void) write_dmesg(dmesg, dmesg_size, dmesg_id);
+ dmesg_size = 0;
/* now point dmesg_id to storage of pe_id */
free_and_replace(dmesg_id, pe_id);
}
- /* Reconstruction of dmesg is done as a useful courtesy, do not log errors */
- dmesg = realloc(dmesg, dmesg_size + strlen(pe->dirent.d_name) + strlen(":\n") + pe->content_size + 1);
- if (dmesg) {
- dmesg_size += sprintf(&dmesg[dmesg_size], "%s:\n", pe->dirent.d_name);
- if (pe->content) {
- memcpy(&dmesg[dmesg_size], pe->content, pe->content_size);
- dmesg_size += pe->content_size;
- }
+ /* Reconstruction of dmesg is done as a useful courtesy: do not fail, but don't write garbled
+ * output either. */
+ size_t needed = strlen(pe->dirent.d_name) + strlen(":\n") + pe->content_size + 1;
+ if (!GREEDY_REALLOC(dmesg, dmesg_allocated, dmesg_size + needed)) {
+ log_warning_errno(ENOMEM, "Failed to write dmesg file: %m");
+ dmesg_bad = true;
+ continue;
+ }
+
+ dmesg_size += sprintf(dmesg + dmesg_size, "%s:\n", pe->dirent.d_name);
+ if (pe->content) {
+ memcpy(dmesg + dmesg_size, pe->content, pe->content_size);
+ dmesg_size += pe->content_size;
}
pe_id = mfree(pe_id);
}
- if (dmesg)
+
+ if (!dmesg_bad)
(void) write_dmesg(dmesg, dmesg_size, dmesg_id);
}
log_setup_service();
- if (argc > 1)
+ if (argc == 3) {
+ arg_sourcedir = argv[1];
+ arg_archivedir = argv[2];
+ } else if (argc > 1)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
- "This program takes no arguments.");
+ "This program takes zero or two arguments.");
/* Ignore all parse errors */
(void) parse_config();
- log_debug("Selected storage '%s'.", pstore_storage_to_string(arg_storage));
- log_debug("Selected Unlink '%d'.", arg_unlink);
+ log_debug("Selected storage: %s.", pstore_storage_to_string(arg_storage));
+ log_debug("Selected unlink: %s.", yes_no(arg_unlink));
if (arg_storage == PSTORE_STORAGE_NONE)
/* Do nothing, intentionally, leaving pstore untouched */