#include <libubox/blobmsg_json.h>
#include <libubox/json_script.h>
#include <libubox/uloop.h>
+#include <json-c/json.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <libgen.h>
+#include <grp.h>
#include "../procd.h"
#define HOTPLUG_WAIT 500
+struct cmd_handler;
struct cmd_queue {
struct list_head list;
struct blob_attr *msg;
struct blob_attr *data;
+ int timeout;
+
void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+ void (*start)(struct blob_attr *msg, struct blob_attr *data);
+ void (*complete)(struct blob_attr *msg, struct blob_attr *data, int ret);
+};
+
+struct button_timeout {
+ struct list_head list;
+ struct uloop_timeout timeout;
+ char *name;
+ int seen;
+ struct blob_attr *data;
};
static LIST_HEAD(cmd_queue);
+static LIST_HEAD(button_timer);
static struct uloop_process queue_proc;
static struct uloop_timeout last_event;
-static struct blob_buf b;
+static struct blob_buf b, button_buf;
static char *rule_file;
static struct blob_buf script;
+static struct cmd_queue *current;
+
+static void queue_add(struct cmd_handler *h, struct blob_attr *msg, struct blob_attr *data);
+static void handle_button_complete(struct blob_attr *msg, struct blob_attr *data, int ret);
+
+static void button_free(struct button_timeout *b)
+{
+ uloop_timeout_cancel(&b->timeout);
+ list_del(&b->list);
+ free(b->data);
+ free(b->name);
+ free(b);
+}
+
+static void button_timeout_remove(char *button)
+{
+ struct button_timeout *b, *c;
+
+ if (!list_empty(&button_timer)) list_for_each_entry_safe(b, c, &button_timer, list) {
+ if (!strcmp(b->name, button))
+ button_free(b);
+ }
+}
static char *hotplug_msg_find_var(struct blob_attr *msg, const char *name)
{
static void handle_makedev(struct blob_attr *msg, struct blob_attr *data)
{
unsigned int oldumask = umask(0);
- static struct blobmsg_policy mkdev_policy[2] = {
+ static struct blobmsg_policy mkdev_policy[3] = {
+ { .type = BLOBMSG_TYPE_STRING },
{ .type = BLOBMSG_TYPE_STRING },
{ .type = BLOBMSG_TYPE_STRING },
};
- struct blob_attr *tb[2];
+ struct blob_attr *tb[3];
char *minor = hotplug_msg_find_var(msg, "MINOR");
char *major = hotplug_msg_find_var(msg, "MAJOR");
char *subsystem = hotplug_msg_find_var(msg, "SUBSYSTEM");
- blobmsg_parse_array(mkdev_policy, 2, tb, blobmsg_data(data), blobmsg_data_len(data));
+ blobmsg_parse_array(mkdev_policy, 3, tb, blobmsg_data(data), blobmsg_data_len(data));
if (tb[0] && tb[1] && minor && major && subsystem) {
mode_t m = S_IFCHR;
char *d = strdup(blobmsg_get_string(tb[0]));
mknod(blobmsg_get_string(tb[0]),
m | strtoul(blobmsg_data(tb[1]), NULL, 8),
makedev(atoi(major), atoi(minor)));
+ if (tb[2]) {
+ struct group *g = getgrnam(blobmsg_get_string(tb[2]));
+
+ if (g)
+ chown(blobmsg_get_string(tb[0]), 0, g->gr_gid);
+ else
+ ERROR("cannot set group %s for %s\n",
+ blobmsg_get_string(tb[2]),
+ blobmsg_get_string(tb[0]));
+ }
}
umask(oldumask);
}
exit(-1);
}
+static void handle_button_start(struct blob_attr *msg, struct blob_attr *data)
+{
+ char *button = hotplug_msg_find_var(msg, "BUTTON");
+
+ if (button)
+ button_timeout_remove(button);
+}
+
static void handle_firmware(struct blob_attr *msg, struct blob_attr *data)
{
char *dir = blobmsg_get_string(blobmsg_data(data));
char *file = hotplug_msg_find_var(msg, "FIRMWARE");
char *dev = hotplug_msg_find_var(msg, "DEVPATH");
- void *fw_data;
- struct stat s;
+ struct stat s = { 0 };
char *path, loadpath[256], syspath[256];
- int fw, load, sys, len;
+ int fw, src, load, len;
+ static char buf[4096];
DEBUG(2, "Firmware request for %s/%s\n", dir, file);
exit(-1);
}
- path = malloc(strlen(dir) + strlen(file) + 2);
- if (!path) {
- ERROR("Failed to allocate memory\n");
- exit(-1);
- }
+ path = alloca(strlen(dir) + strlen(file) + 2);
sprintf(path, "%s/%s", dir, file);
if (stat(path, &s)) {
ERROR("Could not find firmware %s\n", path);
- exit(-1);
- }
-
- fw_data = malloc(s.st_size);
- if (!fw_data) {
- ERROR("Failed to allocate firmware data memory\n");
- exit(-1);
+ src = -1;
+ s.st_size = 0;
+ goto send_to_kernel;
}
- fw = open(path, O_RDONLY);
- if (!fw) {
+ src = open(path, O_RDONLY);
+ if (src < 0) {
ERROR("Failed to open %s\n", path);
- exit(-1);
- }
- if (read(fw, fw_data, s.st_size) != s.st_size) {
- ERROR("Failed to read firmware data\n");
- exit(-1);
+ s.st_size = 0;
+ goto send_to_kernel;
}
- close(fw);
+send_to_kernel:
snprintf(loadpath, sizeof(loadpath), "/sys/%s/loading", dev);
load = open(loadpath, O_WRONLY);
if (!load) {
ERROR("Failed to open %s\n", loadpath);
exit(-1);
}
- write(load, "1", 1);
+ if (write(load, "1", 1) == -1) {
+ ERROR("Failed to write to %s\n", loadpath);
+ exit(-1);
+ }
close(load);
snprintf(syspath, sizeof(syspath), "/sys/%s/data", dev);
- sys = open(syspath, O_WRONLY);
- if (!sys) {
+ fw = open(syspath, O_WRONLY);
+ if (fw < 0) {
ERROR("Failed to open %s\n", syspath);
exit(-1);
}
len = s.st_size;
- while (len > 4096) {
- write(fw, fw_data, 4096);
- len -= 4096;
+ while (len) {
+ len = read(src, buf, sizeof(buf));
+ if (len <= 0)
+ break;
+
+ if (write(fw, buf, len) == -1) {
+ ERROR("failed to write firmware file %s/%s to %s\n", dir, file, dev);
+ break;
+ }
}
- if (len)
- write(fw, fw_data, len);
+
+ if (src >= 0)
+ close(src);
close(fw);
load = open(loadpath, O_WRONLY);
- write(load, "0", 1);
+ if (write(load, "0", 1) == -1)
+ ERROR("failed to write to %s\n", loadpath);
close(load);
DEBUG(2, "Done loading %s\n", path);
exit(-1);
}
+enum {
+ HANDLER_MKDEV = 0,
+ HANDLER_RM,
+ HANDLER_EXEC,
+ HANDLER_BUTTON,
+ HANDLER_FW,
+};
+
static struct cmd_handler {
char *name;
int atomic;
void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+ void (*start)(struct blob_attr *msg, struct blob_attr *data);
+ void (*complete)(struct blob_attr *msg, struct blob_attr *data, int ret);
} handlers[] = {
- {
+ [HANDLER_MKDEV] = {
.name = "makedev",
.atomic = 1,
.handler = handle_makedev,
- }, {
+ },
+ [HANDLER_RM] = {
.name = "rm",
.atomic = 1,
.handler = handle_rm,
- }, {
+ },
+ [HANDLER_EXEC] = {
.name = "exec",
.handler = handle_exec,
- }, {
+ },
+ [HANDLER_BUTTON] = {
+ .name = "button",
+ .handler = handle_exec,
+ .start = handle_button_start,
+ .complete = handle_button_complete,
+ },
+ [HANDLER_FW] = {
.name = "load-firmware",
.handler = handle_firmware,
},
c->handler(c->msg, c->data);
exit(0);
}
-
+ if (c->start)
+ c->start(c->msg, c->data);
list_del(&c->list);
- free(c);
-
+ if (c->complete)
+ current = c;
+ else
+ free(c);
if (queue_proc.pid <= 0) {
queue_next();
return;
{
DEBUG(4, "Finished hotplug exec instance, pid=%d\n", (int) c->pid);
+ if (current) {
+ current->complete(current->msg, current->data, ret);
+ free(current);
+ current = NULL;
+ }
queue_next();
}
memcpy(c->msg, msg, blob_pad_len(msg));
memcpy(c->data, data, blob_pad_len(data));
c->handler = h->handler;
+ c->complete = h->complete;
+ c->start = h->start;
list_add_tail(&c->list, &cmd_queue);
queue_next();
}
+static void handle_button_timeout(struct uloop_timeout *t)
+{
+ struct button_timeout *b;
+ char seen[16];
+
+ b = container_of(t, struct button_timeout, timeout);
+ blob_buf_init(&button_buf, 0);
+ blobmsg_add_string(&button_buf, "BUTTON", b->name);
+ blobmsg_add_string(&button_buf, "ACTION", "timeout");
+ snprintf(seen, sizeof(seen), "%d", b->seen);
+ blobmsg_add_string(&button_buf, "SEEN", seen);
+ queue_add(&handlers[HANDLER_EXEC], button_buf.head, b->data);
+ button_free(b);
+}
+
+static void handle_button_complete(struct blob_attr *msg, struct blob_attr *data, int ret)
+{
+ char *name = hotplug_msg_find_var(msg, "BUTTON");
+ struct button_timeout *b;
+ int timeout = ret >> 8;
+
+ if (!timeout)
+ return;
+
+ b = malloc(sizeof(*b));
+ if (!b || !name)
+ return;
+
+ memset(b, 0, sizeof(*b));
+
+ b->data = malloc(blob_pad_len(data));
+ b->name = strdup(name);
+ b->seen = timeout;
+
+ memcpy(b->data, data, blob_pad_len(data));
+ b->timeout.cb = handle_button_timeout;
+
+ uloop_timeout_set(&b->timeout, timeout * 1000);
+ list_add(&b->list, &button_timer);
+}
+
static const char* rule_handle_var(struct json_script_ctx *ctx, const char *name, struct blob_attr *vars)
{
const char *str, *sep;
json_object *obj;
obj = json_object_from_file((char*)name);
- if (is_error(obj))
+ if (!obj)
return NULL;
blob_buf_init(&script, 0);
void hotplug(char *rules)
{
struct sockaddr_nl nls;
+ int nlbufsize = 512 * 1024;
rule_file = strdup(rules);
memset(&nls,0,sizeof(struct sockaddr_nl));
exit(1);
}
+ if (setsockopt(hotplug_fd.fd, SOL_SOCKET, SO_RCVBUFFORCE, &nlbufsize, sizeof(nlbufsize)))
+ ERROR("Failed to resize receive buffer: %s\n", strerror(errno));
+
json_script_init(&jctx);
queue_proc.cb = queue_proc_cb;
uloop_fd_add(&hotplug_fd, ULOOP_READ);
projects / project / procd.git / blobdiff