diff options
Diffstat (limited to 'drivers/staging/pohmelfs/config.c')
| -rw-r--r-- | drivers/staging/pohmelfs/config.c | 104 |
1 files changed, 97 insertions, 7 deletions
diff --git a/drivers/staging/pohmelfs/config.c b/drivers/staging/pohmelfs/config.c index a6eaa42fb669..5d04bf5b021a 100644 --- a/drivers/staging/pohmelfs/config.c +++ b/drivers/staging/pohmelfs/config.c @@ -284,9 +284,91 @@ static int pohmelfs_cn_disp(struct cn_msg *msg) i += 1; } + out_unlock: + mutex_unlock(&pohmelfs_config_lock); + return err; +} + +static int pohmelfs_cn_dump(struct cn_msg *msg) +{ + struct pohmelfs_config_group *g; + struct pohmelfs_config *c, *tmp; + int err = 0, i = 1; + int total_msg = 0; + + if (msg->len != sizeof(struct pohmelfs_ctl)) + return -EBADMSG; + + mutex_lock(&pohmelfs_config_lock); + + list_for_each_entry(g, &pohmelfs_config_list, group_entry) { + if (g) + total_msg += g->num_entry; + } + if (total_msg == 0) { + if (pohmelfs_send_reply(err, 0, POHMELFS_NOINFO_ACK, msg, NULL)) + err = -ENOMEM; + goto out_unlock; + } + + list_for_each_entry(g, &pohmelfs_config_list, group_entry) { + if (g) { + list_for_each_entry_safe(c, tmp, &g->config_list, config_entry) { + struct pohmelfs_ctl *sc = &c->state.ctl; + if (pohmelfs_send_reply(err, total_msg - i, POHMELFS_CTLINFO_ACK, msg, sc)) { + err = -ENOMEM; + goto out_unlock; + } + i += 1; + } + } + } + +out_unlock: + mutex_unlock(&pohmelfs_config_lock); + return err; +} + +static int pohmelfs_cn_flush(struct cn_msg *msg) +{ + struct pohmelfs_config_group *g; + struct pohmelfs_ctl *ctl = (struct pohmelfs_ctl *)msg->data; + struct pohmelfs_config *c, *tmp; + int err = 0; + + if (msg->len != sizeof(struct pohmelfs_ctl)) + return -EBADMSG; + + mutex_lock(&pohmelfs_config_lock); + + if (ctl->idx != POHMELFS_NULL_IDX) { + g = pohmelfs_find_config_group(ctl->idx); + + if (!g) + goto out_unlock; + + list_for_each_entry_safe(c, tmp, &g->config_list, config_entry) { + list_del(&c->config_entry); + g->num_entry--; + kfree(c); + } + } else { + list_for_each_entry(g, &pohmelfs_config_list, group_entry) { + if (g) { + list_for_each_entry_safe(c, tmp, &g->config_list, config_entry) { + list_del(&c->config_entry); + g->num_entry--; + kfree(c); + } + } + } + } + out_unlock: - mutex_unlock(&pohmelfs_config_lock); - return err; + mutex_unlock(&pohmelfs_config_lock); + pohmelfs_cn_dump(msg); + + return err; } static int pohmelfs_modify_config(struct pohmelfs_ctl *old, struct pohmelfs_ctl *new) @@ -350,7 +432,7 @@ static int pohmelfs_cn_ctl(struct cn_msg *msg, int action) list_add_tail(&c->config_entry, &g->config_list); -out_unlock: + out_unlock: mutex_unlock(&pohmelfs_config_lock); if (pohmelfs_send_reply(err, 0, POHMELFS_NOINFO_ACK, msg, NULL)) err = -ENOMEM; @@ -408,7 +490,6 @@ static int pohmelfs_crypto_cipher_init(struct pohmelfs_config_group *g, struct p return 0; } - static int pohmelfs_cn_crypto(struct cn_msg *msg) { struct pohmelfs_crypto *crypto = (struct pohmelfs_crypto *)msg->data; @@ -446,20 +527,28 @@ out_unlock: return err; } -static void pohmelfs_cn_callback(void *data) +static void pohmelfs_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp) { - struct cn_msg *msg = data; int err; + if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN)) + return; + switch (msg->flags) { case POHMELFS_FLAGS_ADD: case POHMELFS_FLAGS_DEL: case POHMELFS_FLAGS_MODIFY: err = pohmelfs_cn_ctl(msg, msg->flags); break; + case POHMELFS_FLAGS_FLUSH: + err = pohmelfs_cn_flush(msg); + break; case POHMELFS_FLAGS_SHOW: err = pohmelfs_cn_disp(msg); break; + case POHMELFS_FLAGS_DUMP: + err = pohmelfs_cn_dump(msg); + break; case POHMELFS_FLAGS_CRYPTO: err = pohmelfs_cn_crypto(msg); break; @@ -498,7 +587,8 @@ int pohmelfs_config_check(struct pohmelfs_config *config, int idx) int __init pohmelfs_config_init(void) { - return cn_add_callback(&pohmelfs_cn_id, "pohmelfs", pohmelfs_cn_callback); + /* XXX remove (void *) cast when vanilla connector got synced */ + return cn_add_callback(&pohmelfs_cn_id, "pohmelfs", (void *)pohmelfs_cn_callback); } void pohmelfs_config_exit(void) |