tmpfiles: add new switch -E for quickly excluding /proc, /dev, /sys and /run
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 2404e36..3c800d5 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -2884,6 +2884,27 @@
return cat_files(NULL, files, 0);
}
+static int exclude_default_prefixes(void) {
+ int r;
+
+ /* Provide an easy way to exclude virtual/memory file systems from what we do here. Useful in
+ * combination with --root= where we probably don't want to apply stuff to these dirs as they are
+ * likely over-mounted if the root directory is actually used, and it wouldbe less than ideal to have
+ * all kinds of files created/adjusted underneath these mount points. */
+
+ r = strv_extend_strv(
+ &arg_exclude_prefixes,
+ STRV_MAKE("/dev",
+ "/proc",
+ "/run",
+ "/sys"),
+ true);
+ if (r < 0)
+ return log_oom();
+
+ return 0;
+}
+
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
@@ -2904,6 +2925,7 @@
" --boot Execute actions only safe at boot\n"
" --prefix=PATH Only apply rules with the specified prefix\n"
" --exclude-prefix=PATH Ignore rules with the specified prefix\n"
+ " -E Ignore rules prefixed with /dev, /proc, /run, /sys\n"
" --root=PATH Operate on an alternate filesystem root\n"
" --replace=PATH Treat arguments as replacement for PATH\n"
" --no-pager Do not pipe output into a pager\n"
@@ -2954,7 +2976,7 @@
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+ while ((c = getopt_long(argc, argv, "hE", options, NULL)) >= 0)
switch (c) {
@@ -2998,6 +3020,13 @@
return log_oom();
break;
+ case 'E':
+ r = exclude_default_prefixes();
+ if (r < 0)
+ return r;
+
+ break;
+
case ARG_ROOT:
r = parse_path_argument_and_warn(optarg, /* suppress_root= */ false, &arg_root);
if (r < 0)