7:40 a.m.
Simple refactoring. The only annoying point is requiring an extra
module because of OCaml module dependency restrictions.
---
.gitignore | 1 +
daemon/Makefile.am | 3 ++
daemon/lvm.c | 76 ---------------------------------------
daemon/lvm_dm.ml | 39 ++++++++++++++++++++
generator/actions_core.ml | 1 +
5 files changed, 44 insertions(+), 76 deletions(-)
diff --git a/.gitignore b/.gitignore
index 39354de51..71a84fd9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -164,6 +164,7 @@ Makefile.in
/daemon/link.mli
/daemon/listfs.mli
/daemon/lvm.mli
+/daemon/lvm_dm.mli
/daemon/lvm-tokenization.c
/daemon/md.mli
/daemon/mount.mli
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 480192e1c..038be592c 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -50,6 +50,7 @@ generator_built = \
link.mli \
listfs.mli \
lvm.mli \
+ lvm_dm.mli \
md.mli \
mount.mli \
optgroups.ml \
@@ -289,6 +290,7 @@ SOURCES_MLI = \
link.mli \
listfs.mli \
lvm.mli \
+ lvm_dm.mli \
lvm_utils.mli \
md.mli \
mount.mli \
@@ -321,6 +323,7 @@ SOURCES_ML = \
link.ml \
lvm.ml \
lvm_utils.ml \
+ lvm_dm.ml \
findfs.ml \
md.ml \
mount.ml \
diff --git a/daemon/lvm.c b/daemon/lvm.c
index a78b344db..039240866 100644
--- a/daemon/lvm.c
+++ b/daemon/lvm.c
@@ -764,82 +764,6 @@ do_lvm_canonical_lv_name (const char *device)
return canonical; /* caller frees */
}
-/* List everything in /dev/mapper which *isn't* an LV (RHBZ#688062). */
-char **
-do_list_dm_devices (void)
-{
- CLEANUP_FREE_STRINGSBUF DECLARE_STRINGSBUF (ret);
- struct dirent *d;
- DIR *dir;
- int r;
-
- dir = opendir ("/dev/mapper");
- if (!dir) {
- reply_with_perror ("opendir: /dev/mapper");
- return NULL;
- }
-
- while (1) {
- CLEANUP_FREE char *devname = NULL;
-
- errno = 0;
- d = readdir (dir);
- if (d == NULL) break;
-
- /* Ignore . and .. */
- if (STREQ (d->d_name, ".") || STREQ (d->d_name, ".."))
- continue;
-
- /* Ignore /dev/mapper/control which is used internally by dm. */
- if (STREQ (d->d_name, "control"))
- continue;
-
- if (asprintf (&devname, "/dev/mapper/%s", d->d_name) == -1) {
- reply_with_perror ("asprintf");
- closedir (dir);
- return NULL;
- }
-
- /* Ignore dm devices which are LVs. */
- r = lv_canonical (devname, NULL);
- if (r == -1) {
- closedir (dir);
- return NULL;
- }
- if (r)
- continue;
-
- /* Not an LV, so add it. */
- if (add_string (&ret, devname) == -1) {
- closedir (dir);
- return NULL;
- }
- }
-
- /* Did readdir fail? */
- if (errno != 0) {
- reply_with_perror ("readdir: /dev/mapper");
- closedir (dir);
- return NULL;
- }
-
- /* Close the directory handle. */
- if (closedir (dir) == -1) {
- reply_with_perror ("closedir: /dev/mapper");
- return NULL;
- }
-
- /* Sort the output (may be empty). */
- if (ret.size > 0)
- sort_strings (ret.argv, ret.size);
-
- /* NULL-terminate the list. */
- if (end_stringsbuf (&ret) == -1)
- return NULL;
-
- return take_stringsbuf (&ret);
-}
-
char *
do_vgmeta (const char *vg, size_t *size_r)
{
diff --git a/daemon/lvm_dm.ml b/daemon/lvm_dm.ml
new file mode 100644
index 000000000..474ba8377
--- /dev/null
+++ b/daemon/lvm_dm.ml
@@ -0,0 +1,39 @@
+(* guestfs-inspection
+ * Copyright (C) 2009-2020 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+open Unix
+open Printf
+
+open Std_utils
+
+open Utils
+
+(* List everything in /dev/mapper which *isn't* an LV (RHBZ#688062). *)
+let list_dm_devices () =
+ let ds = Sys.readdir "/dev/mapper" in
+ let ds = Array.to_list ds in
+ let ds = List.sort compare ds in
+
+ (* Ignore /dev/mapper/control which is used internally by d-m. *)
+ let ds = List.filter ((<>) "control") ds in
+
+ let ds = List.map ((^) "/dev/mapper/") ds in
+
+ (* Only keep devices which are _not_ LVs. *)
+ let ds = List.filter (fun d -> Lvm_utils.lv_canonical d = None) ds in
+ ds
diff --git a/generator/actions_core.ml b/generator/actions_core.ml
index 2092c990e..9d0c0fe76 100644
--- a/generator/actions_core.ml
+++ b/generator/actions_core.ml
@@ -6180,6 +6180,7 @@ parameter." };
{ defaults with
name = "list_dm_devices"; added = (1, 11, 15);
style = RStringList (RDevice, "devices"), [], [];
+ impl = OCaml "Lvm_dm.list_dm_devices";
shortdesc = "list device mapper devices";
longdesc = "\
List all device mapper devices.
--
2.27.0