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authorDenys Vlasenko <vda.linux@googlemail.com>2012-05-18 09:39:57 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2012-05-18 09:39:57 (GMT)
commitea57f51819a358a6c1309cf028a1a2dcd90dd7a5 (patch)
tree91ae47398abb8401bc6cadb2eaff13e6d14acb33
parent516530c932bd17d87c9eb4347a490be051e495f4 (diff)
downloadbusybox-ea57f51819a358a6c1309cf028a1a2dcd90dd7a5.tar.gz
busybox-ea57f51819a358a6c1309cf028a1a2dcd90dd7a5.tar.bz2
mdev: when found, print major,minor into mdev.log
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--examples/mdev.conf10
-rw-r--r--examples/mdev_fat.conf8
-rw-r--r--util-linux/mdev.c20
3 files changed, 26 insertions, 12 deletions
diff --git a/examples/mdev.conf b/examples/mdev.conf
index cdbb4fc..5179569 100644
--- a/examples/mdev.conf
+++ b/examples/mdev.conf
@@ -7,8 +7,14 @@
# instead of the default 0:0 660.
#
# Syntax:
-# %s %d:%d %s
-# devicename_regex user:group mode
+# [-]devicename_regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
+# [-]$ENVVAR=regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
+# [-]@maj,min[-min2] user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
+#
+# [-]: do not stop on this match, continue reading mdev.conf
+# =: move, >: move and create a symlink
+# !: do not create device node
+# @|$|*: run@cmd if $ACTION=add, $cmd if $ACTION=remove, *cmd in all cases
null 0:0 666
zero 0:0 666
diff --git a/examples/mdev_fat.conf b/examples/mdev_fat.conf
index df329b4..d67912b 100644
--- a/examples/mdev_fat.conf
+++ b/examples/mdev_fat.conf
@@ -7,10 +7,14 @@
# instead of the default 0:0 660.
#
# Syntax:
-# [-]devicename_regex user:group mode [>|=path] [@|$|*cmd args...]
+# [-]devicename_regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
+# [-]$ENVVAR=regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
+# [-]@maj,min[-min2] user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
#
+# [-]: do not stop on this match, continue reading mdev.conf
# =: move, >: move and create a symlink
-# @|$|*: run $cmd on delete, @cmd on create, *cmd on both
+# !: do not create device node
+# @|$|*: run cmd if $ACTION=remove, @cmd if $ACTION=add, *cmd in all cases
# support module loading on hotplug
$MODALIAS=.* root:root 660 @modprobe "$MODALIAS"
diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index 70d1903..101acb7 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -471,7 +471,7 @@ static void make_device(char *device_name, char *path, int operation)
int major, minor, type, len;
if (G.verbose)
- bb_error_msg("make_device: %s, %s, op:%d", device_name, path, operation);
+ bb_error_msg("device: %s, %s", device_name, path);
/* Try to read major/minor string. Note that the kernel puts \n after
* the data, so we don't need to worry about null terminating the string
@@ -479,7 +479,7 @@ static void make_device(char *device_name, char *path, int operation)
* We also depend on path having writeable space after it.
*/
major = -1;
- if (operation != OP_remove) {
+ if (operation == OP_add) {
char *dev_maj_min = path + strlen(path);
strcpy(dev_maj_min, "/dev");
@@ -490,7 +490,10 @@ static void make_device(char *device_name, char *path, int operation)
return;
/* no "dev" file, but we can still run scripts
* based on device name */
- } else if (sscanf(++dev_maj_min, "%u:%u", &major, &minor) != 2) {
+ } else if (sscanf(++dev_maj_min, "%u:%u", &major, &minor) == 2) {
+ if (G.verbose)
+ bb_error_msg("maj,min: %u,%u", major, minor);
+ } else {
major = -1;
}
}
@@ -502,7 +505,8 @@ static void make_device(char *device_name, char *path, int operation)
/* http://kernel.org/doc/pending/hotplug.txt says that only
* "/sys/block/..." is for block devices. "/sys/bus" etc is not.
* But since 2.6.25 block devices are also in /sys/class/block.
- * We use strstr("/block/") to forestall future surprises. */
+ * We use strstr("/block/") to forestall future surprises.
+ */
type = S_IFCHR;
if (strstr(path, "/block/") || (G.subsystem && strncmp(G.subsystem, "block", 5) == 0))
type = S_IFBLK;
@@ -669,12 +673,12 @@ static void make_device(char *device_name, char *path, int operation)
bb_error_msg("mknod: %s (%d,%d) %o", node_name, major, minor, rule->mode | type);
if (mknod(node_name, rule->mode | type, makedev(major, minor)) && errno != EEXIST)
bb_perror_msg("can't create '%s'", node_name);
- if (major == G.root_major && minor == G.root_minor)
- symlink(node_name, "root");
if (ENABLE_FEATURE_MDEV_CONF) {
chmod(node_name, rule->mode);
chown(node_name, rule->ugid.uid, rule->ugid.gid);
}
+ if (major == G.root_major && minor == G.root_minor)
+ symlink(node_name, "root");
if (ENABLE_FEATURE_MDEV_RENAME && alias) {
if (aliaslink == '>') {
//TODO: on devtmpfs, device_name already exists and symlink() fails.
@@ -890,13 +894,13 @@ int mdev_main(int argc UNUSED_PARAM, char **argv)
* DEVPATH is like "/block/sda" or "/class/input/mice"
*/
action = getenv("ACTION");
+ op = index_in_strings(keywords, action);
env_devname = getenv("DEVNAME"); /* can be NULL */
env_devpath = getenv("DEVPATH");
G.subsystem = getenv("SUBSYSTEM");
if (!action || !env_devpath /*|| !G.subsystem*/)
bb_show_usage();
fw = getenv("FIRMWARE");
- op = index_in_strings(keywords, action);
/* If it exists, does /dev/mdev.seq match $SEQNUM?
* If it does not match, earlier mdev is running
* in parallel, and we need to wait */
@@ -927,7 +931,7 @@ int mdev_main(int argc UNUSED_PARAM, char **argv)
if (logfd >= 0) {
xmove_fd(logfd, STDERR_FILENO);
G.verbose = 1;
- bb_error_msg("pid: %u seq: %s action: %s", getpid(), seq, action);
+ bb_error_msg("seq: %s action: %s", seq, action);
}
}