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From: Laura Abbott <labbott@fedoraproject.org>
To: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Laura Abbott <labbott@fedoraproject.org>, linux-modules@vger.kernel.org
Subject: [PATCH 2/4] modprobe: Add appropriate error message when path is missing
Date: Fri, 11 Sep 2015 13:55:54 -0700	[thread overview]
Message-ID: <1442004956-3868-3-git-send-email-labbott@fedoraproject.org> (raw)
In-Reply-To: <1442004956-3868-1-git-send-email-labbott@fedoraproject.org>


Currently, modprobe fails with no output by default if the
search paths it tries are missing:

$ modprobe -S notakernel dm-crypt
$
$ modprobe -S notakernel lkjjweiojo
$

This is fairly cryptic and not at all obvious there is a problem
unless the error code is checked or verbose flags are used.
Add a message to give a better idea that something went wrong.
---
 tools/modprobe.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/modprobe.c b/tools/modprobe.c
index 3ba8f52..b50a385 100644
--- a/tools/modprobe.c
+++ b/tools/modprobe.c
@@ -489,8 +489,11 @@ static int insmod(struct kmod_ctx *ctx, const char *alias,
 						const char *options) = NULL;
 
 	err = kmod_module_new_from_lookup(ctx, alias, &list);
-	if (err < 0)
+	if (err < 0) {
+		ERR("Could not generate list of modules from context\n");
+		ERR("(Is your version correct)?)\n");
 		return err;
+	}
 
 	if (list == NULL) {
 		LOG("Module %s not found.\n", alias);
-- 
2.4.3


  parent reply	other threads:[~2015-09-11 20:55 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-11 20:55 [PATCH 0/4] depmod and modprobe error message fixups Laura Abbott
2015-09-11 20:55 ` [PATCH 1/4] build: Properly check for Cython Laura Abbott
2015-09-12 18:27   ` Lucas De Marchi
2015-09-18 17:38     ` Laura Abbott
2015-09-24  1:11       ` Lucas De Marchi
2015-09-11 20:55 ` Laura Abbott [this message]
2015-09-12 18:45   ` [PATCH 2/4] modprobe: Add appropriate error message when path is missing Lucas De Marchi
2015-09-11 20:55 ` [PATCH 3/4] depmod: Fix message printing before log_setup_kmod_log Laura Abbott
2015-09-12 18:55   ` Lucas De Marchi
2015-09-18 18:26     ` Laura Abbott
2015-09-24  1:16       ` Lucas De Marchi
2015-09-11 20:55 ` [PATCH 4/4] depmod: Add error message for bad version Laura Abbott
2015-09-12 19:00   ` Lucas De Marchi
2015-09-18 18:30     ` Laura Abbott
2015-09-24  1:17       ` Lucas De Marchi
2015-09-12 19:05 ` [PATCH 0/4] depmod and modprobe error message fixups Lucas De Marchi
2015-09-16 23:35   ` Kay Sievers

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