From: "Richard W.M. Jones" <rjones(a)redhat.com>
It likely means the kernel was compiled without modules support.
(cherry picked from commit 8ad634877cf315288497a8580fb4afc7658deae9)
---
daemon/modprobe.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/daemon/modprobe.c b/daemon/modprobe.c
index 24d2a5b..0b7896a 100644
--- a/daemon/modprobe.c
+++ b/daemon/modprobe.c
@@ -20,6 +20,8 @@
#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
#include "daemon.h"
#include "actions.h"
@@ -30,6 +32,13 @@ GUESTFSD_EXT_CMD(str_modprobe, modprobe);
int
optgroup_linuxmodules_available (void)
{
+ /* If /proc/modules doesn't exist, then the appliance kernel
+ * probably has modules support compiled out. This means modprobe
+ * is not supported.
+ */
+ if (access ("/proc/modules", R_OK) == -1 && errno == ENOENT)
+ return 0;
+
return prog_exists (str_modprobe);
}
@@ -37,7 +46,9 @@ int
do_modprobe (const char *module)
{
CLEANUP_FREE char *err = NULL;
- int r = command (NULL, &err, str_modprobe, module, NULL);
+ int r;
+
+ r = command (NULL, &err, str_modprobe, module, NULL);
if (r == -1) {
reply_with_error ("%s", err);
--
1.8.3.1