diff options
| -rw-r--r-- | examples/mdev.conf | 10 | ||||
| -rw-r--r-- | examples/mdev_fat.conf | 8 | ||||
| -rw-r--r-- | util-linux/mdev.c | 20 |
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); } } |