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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-11-25 19:39:19 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-11-25 21:16:47 -0500
commitd6170d27b26eeeace966bb9720d66fcac2a6ef1b (patch)
tree0610f7c4abf3e350ad56d804015778917138dd47 /src/udev
parent6c78f43c7b0e54e695af49917fda79b584f46830 (diff)
udevadm: split out find_device helper
The idea is to unify the way that devices can be specified.
Diffstat (limited to 'src/udev')
-rw-r--r--src/udev/udevadm-info.c30
-rw-r--r--src/udev/udevadm-trigger.c18
-rw-r--r--src/udev/udevadm-util.c49
-rw-r--r--src/udev/udevadm-util.h22
4 files changed, 78 insertions, 41 deletions
diff --git a/src/udev/udevadm-info.c b/src/udev/udevadm-info.c
index 22d0826011..a56f159543 100644
--- a/src/udev/udevadm-info.c
+++ b/src/udev/udevadm-info.c
@@ -31,6 +31,7 @@
#include "udev.h"
#include "udev-util.h"
+#include "udevadm-util.h"
static bool skip_attribute(const char *name) {
static const char* const skip[] = {
@@ -257,35 +258,6 @@ static void cleanup_db(struct udev *udev) {
}
}
-static struct udev_device *find_device(struct udev *udev, const char *id, const char *prefix) {
- char name[UTIL_PATH_SIZE];
-
- if (prefix && !startswith(id, prefix)) {
- strscpyl(name, sizeof(name), prefix, id, NULL);
- id = name;
- }
-
- if (startswith(id, "/dev/")) {
- struct stat statbuf;
- char type;
-
- if (stat(id, &statbuf) < 0)
- return NULL;
-
- if (S_ISBLK(statbuf.st_mode))
- type = 'b';
- else if (S_ISCHR(statbuf.st_mode))
- type = 'c';
- else
- return NULL;
-
- return udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
- } else if (startswith(id, "/sys/"))
- return udev_device_new_from_syspath(udev, id);
- else
- return NULL;
-}
-
static int uinfo(struct udev *udev, int argc, char *argv[]) {
_cleanup_udev_device_unref_ struct udev_device *device = NULL;
bool root = 0;
diff --git a/src/udev/udevadm-trigger.c b/src/udev/udevadm-trigger.c
index a52d1b5ad5..49e256289c 100644
--- a/src/udev/udevadm-trigger.c
+++ b/src/udev/udevadm-trigger.c
@@ -32,6 +32,7 @@
#include "udev.h"
#include "udev-util.h"
+#include "udevadm-util.h"
#include "util.h"
static int verbose;
@@ -174,25 +175,18 @@ static int adm_trigger(struct udev *udev, int argc, char *argv[]) {
udev_enumerate_add_match_sysname(udev_enumerate, optarg);
break;
case 'b': {
- char path[UTIL_PATH_SIZE];
- struct udev_device *dev;
-
- /* add sys dir if needed */
- if (!startswith(optarg, "/sys"))
- strscpyl(path, sizeof(path), "/sys", optarg, NULL);
- else
- strscpy(path, sizeof(path), optarg);
- util_remove_trailing_chars(path, '/');
- dev = udev_device_new_from_syspath(udev, path);
+ _cleanup_udev_device_unref_ struct udev_device *dev;
+
+ dev = find_device(udev, optarg, "/sys");
if (dev == NULL) {
log_error("unable to open the device '%s'", optarg);
return 2;
}
+
udev_enumerate_add_match_parent(udev_enumerate, dev);
- /* drop reference immediately, enumerate pins the device as long as needed */
- udev_device_unref(dev);
break;
}
+
case 'h':
help();
return 0;
diff --git a/src/udev/udevadm-util.c b/src/udev/udevadm-util.c
new file mode 100644
index 0000000000..37e80c31df
--- /dev/null
+++ b/src/udev/udevadm-util.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008-2009 Kay Sievers <kay@vrfy.org>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "udevadm-util.h"
+
+struct udev_device *find_device(struct udev *udev,
+ const char *id,
+ const char *prefix) {
+
+ assert(udev);
+ assert(id);
+
+ if (prefix && !startswith(id, prefix))
+ id = strappenda(prefix, id);
+
+ if (startswith(id, "/dev/")) {
+ struct stat statbuf;
+ char type;
+
+ if (stat(id, &statbuf) < 0)
+ return NULL;
+
+ if (S_ISBLK(statbuf.st_mode))
+ type = 'b';
+ else if (S_ISCHR(statbuf.st_mode))
+ type = 'c';
+ else
+ return NULL;
+
+ return udev_device_new_from_devnum(udev, type, statbuf.st_rdev);
+ } else if (startswith(id, "/sys/"))
+ return udev_device_new_from_syspath(udev, id);
+ else
+ return NULL;
+}
diff --git a/src/udev/udevadm-util.h b/src/udev/udevadm-util.h
new file mode 100644
index 0000000000..dba651fddb
--- /dev/null
+++ b/src/udev/udevadm-util.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2014 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "udev.h"
+
+struct udev_device *find_device(struct udev *udev,
+ const char *id,
+ const char *prefix);