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authorLennart Poettering <lennart@poettering.net>2012-06-22 10:27:05 +0200
committerLennart Poettering <lennart@poettering.net>2012-06-22 10:27:05 +0200
commit9473414219330b9febc1d0712bbf49ad74cf962f (patch)
tree3e011344cf44b689ee42c203a39d7ac82d78313e /src/fstab-generator
parent2488799b35f9124c9e2ec828d3b230b7e015af26 (diff)
fstab-generator: support fstab=/rd.fstab= kernel cmdline
This generalizes functionality already available in dracut.
Diffstat (limited to 'src/fstab-generator')
-rw-r--r--src/fstab-generator/fstab-generator.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/fstab-generator/fstab-generator.c b/src/fstab-generator/fstab-generator.c
index d9ba3e32e2..f832730b40 100644
--- a/src/fstab-generator/fstab-generator.c
+++ b/src/fstab-generator/fstab-generator.c
@@ -32,8 +32,10 @@
#include "mount-setup.h"
#include "special.h"
#include "mkdir.h"
+#include "virt.h"
static const char *arg_dest = "/tmp";
+static bool arg_enabled = true;
static int device_name(const char *path, char **unit) {
char *p;
@@ -492,6 +494,62 @@ finish:
return r;
}
+static int parse_proc_cmdline(void) {
+ char *line, *w, *state;
+ int r;
+ size_t l;
+
+ if (detect_container(NULL) > 0)
+ return 0;
+
+ r = read_one_line_file("/proc/cmdline", &line);
+ if (r < 0) {
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ return 0;
+ }
+
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+ char *word;
+
+ word = strndup(w, l);
+ if (!word) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (startswith(word, "fstab=")) {
+ r = parse_boolean(word + 6);
+ if (r < 0)
+ log_warning("Failed to parse fstab switch %s. Ignoring.", word + 6);
+ else
+ arg_enabled = r;
+
+ } else if (startswith(word, "rd.fstab=")) {
+
+ if (in_initrd()) {
+ r = parse_boolean(word + 6);
+ if (r < 0)
+ log_warning("Failed to parse fstab switch %s. Ignoring.", word + 6);
+ else
+ arg_enabled = r;
+ }
+
+ } else if (startswith(word, "fstab.") ||
+ (in_initrd() && startswith(word, "rd.fstab."))) {
+
+ log_warning("Unknown kernel switch %s. Ignoring.", word);
+ }
+
+ free(word);
+ }
+
+ r = 0;
+
+finish:
+ free(line);
+ return r;
+}
+
int main(int argc, char *argv[]) {
int r;
@@ -509,6 +567,12 @@ int main(int argc, char *argv[]) {
umask(0022);
+ if (parse_proc_cmdline() < 0)
+ return EXIT_FAILURE;
+
+ if (!arg_enabled)
+ return EXIT_SUCCESS;
+
r = parse_fstab();
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;