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Diffstat (limited to 'udev/lib/libudev-ctrl.c')
-rw-r--r--udev/lib/libudev-ctrl.c321
1 files changed, 0 insertions, 321 deletions
diff --git a/udev/lib/libudev-ctrl.c b/udev/lib/libudev-ctrl.c
deleted file mode 100644
index e47b2b66dc..0000000000
--- a/udev/lib/libudev-ctrl.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#include "libudev.h"
-#include "libudev-private.h"
-
-/* wire protocol magic must match */
-#define UDEV_CTRL_MAGIC 0xdead1dea
-
-enum udev_ctrl_msg_type {
- UDEV_CTRL_UNKNOWN,
- UDEV_CTRL_SET_LOG_LEVEL,
- UDEV_CTRL_STOP_EXEC_QUEUE,
- UDEV_CTRL_START_EXEC_QUEUE,
- UDEV_CTRL_RELOAD_RULES,
- UDEV_CTRL_SET_ENV,
- UDEV_CTRL_SET_MAX_CHILDS,
- UDEV_CTRL_SET_MAX_CHILDS_RUNNING,
- UDEV_CTRL_SETTLE,
-};
-
-struct udev_ctrl_msg_wire {
- char version[16];
- unsigned int magic;
- enum udev_ctrl_msg_type type;
- union {
- int intval;
- char buf[256];
- };
-};
-
-struct udev_ctrl_msg {
- int refcount;
- struct udev_ctrl *uctrl;
- struct udev_ctrl_msg_wire ctrl_msg_wire;
- pid_t pid;
-};
-
-struct udev_ctrl {
- int refcount;
- struct udev *udev;
- int sock;
- struct sockaddr_un saddr;
- socklen_t addrlen;
-};
-
-struct udev_ctrl *udev_ctrl_new_from_socket(struct udev *udev, const char *socket_path)
-{
- struct udev_ctrl *uctrl;
-
- uctrl = calloc(1, sizeof(struct udev_ctrl));
- if (uctrl == NULL)
- return NULL;
- uctrl->refcount = 1;
- uctrl->udev = udev;
-
- uctrl->sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
- if (uctrl->sock < 0) {
- err(udev, "error getting socket: %m\n");
- udev_ctrl_unref(uctrl);
- return NULL;
- }
-
- uctrl->saddr.sun_family = AF_LOCAL;
- strcpy(uctrl->saddr.sun_path, socket_path);
- uctrl->addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(uctrl->saddr.sun_path);
- /* translate leading '@' to abstract namespace */
- if (uctrl->saddr.sun_path[0] == '@')
- uctrl->saddr.sun_path[0] = '\0';
-
- return uctrl;
-}
-
-int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl)
-{
- int err;
- const int feature_on = 1;
-
- err= bind(uctrl->sock, (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
- if (err < 0) {
- err(uctrl->udev, "bind failed: %m\n");
- return err;
- }
-
- /* enable receiving of the sender credentials */
- setsockopt(uctrl->sock, SOL_SOCKET, SO_PASSCRED, &feature_on, sizeof(feature_on));
- return 0;
-}
-
-struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl)
-{
- return uctrl->udev;
-}
-
-struct udev_ctrl *udev_ctrl_ref(struct udev_ctrl *uctrl)
-{
- if (uctrl == NULL)
- return NULL;
- uctrl->refcount++;
- return uctrl;
-}
-
-void udev_ctrl_unref(struct udev_ctrl *uctrl)
-{
- if (uctrl == NULL)
- return;
- uctrl->refcount--;
- if (uctrl->refcount > 0)
- return;
- if (uctrl->sock >= 0)
- close(uctrl->sock);
- free(uctrl);
-}
-
-int udev_ctrl_get_fd(struct udev_ctrl *uctrl)
-{
- if (uctrl == NULL)
- return -1;
- return uctrl->sock;
-}
-
-static int ctrl_send(struct udev_ctrl *uctrl, enum udev_ctrl_msg_type type, int intval, const char *buf)
-{
- struct udev_ctrl_msg_wire ctrl_msg_wire;
- int err;
-
- memset(&ctrl_msg_wire, 0x00, sizeof(struct udev_ctrl_msg_wire));
- strcpy(ctrl_msg_wire.version, "udev-" VERSION);
- ctrl_msg_wire.magic = UDEV_CTRL_MAGIC;
- ctrl_msg_wire.type = type;
-
- if (buf != NULL)
- util_strscpy(ctrl_msg_wire.buf, sizeof(ctrl_msg_wire.buf), buf);
- else
- ctrl_msg_wire.intval = intval;
-
- err = sendto(uctrl->sock, &ctrl_msg_wire, sizeof(ctrl_msg_wire), 0,
- (struct sockaddr *)&uctrl->saddr, uctrl->addrlen);
- if (err == -1) {
- err(uctrl->udev, "error sending message: %m\n");
- }
- return err;
-}
-
-int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority)
-{
- return ctrl_send(uctrl, UDEV_CTRL_SET_LOG_LEVEL, priority, NULL);
-}
-
-int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl)
-{
- return ctrl_send(uctrl, UDEV_CTRL_STOP_EXEC_QUEUE, 0, NULL);
-}
-
-int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl)
-{
- return ctrl_send(uctrl, UDEV_CTRL_START_EXEC_QUEUE, 0, NULL);
-}
-
-int udev_ctrl_send_reload_rules(struct udev_ctrl *uctrl)
-{
- return ctrl_send(uctrl, UDEV_CTRL_RELOAD_RULES, 0, NULL);
-}
-
-int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key)
-{
- return ctrl_send(uctrl, UDEV_CTRL_SET_ENV, 0, key);
-}
-
-int udev_ctrl_send_set_max_childs(struct udev_ctrl *uctrl, int count)
-{
- return ctrl_send(uctrl, UDEV_CTRL_SET_MAX_CHILDS, count, NULL);
-}
-
-int udev_ctrl_send_settle(struct udev_ctrl *uctrl)
-{
- return ctrl_send(uctrl, UDEV_CTRL_SETTLE, 0, NULL);
-}
-
-struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl *uctrl)
-{
- struct udev_ctrl_msg *uctrl_msg;
- ssize_t size;
- struct msghdr smsg;
- struct cmsghdr *cmsg;
- struct iovec iov;
- struct ucred *cred;
- char cred_msg[CMSG_SPACE(sizeof(struct ucred))];
-
- uctrl_msg = calloc(1, sizeof(struct udev_ctrl_msg));
- if (uctrl_msg == NULL)
- return NULL;
- uctrl_msg->refcount = 1;
- uctrl_msg->uctrl = uctrl;
-
- iov.iov_base = &uctrl_msg->ctrl_msg_wire;
- iov.iov_len = sizeof(struct udev_ctrl_msg_wire);
-
- memset(&smsg, 0x00, sizeof(struct msghdr));
- smsg.msg_iov = &iov;
- smsg.msg_iovlen = 1;
- smsg.msg_control = cred_msg;
- smsg.msg_controllen = sizeof(cred_msg);
-
- size = recvmsg(uctrl->sock, &smsg, 0);
- if (size < 0) {
- err(uctrl->udev, "unable to receive user udevd message: %m\n");
- goto err;
- }
- cmsg = CMSG_FIRSTHDR(&smsg);
- cred = (struct ucred *) CMSG_DATA(cmsg);
-
- if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) {
- err(uctrl->udev, "no sender credentials received, message ignored\n");
- goto err;
- }
-
- if (cred->uid != 0) {
- err(uctrl->udev, "sender uid=%i, message ignored\n", cred->uid);
- goto err;
- }
-
- uctrl_msg->pid = cred->pid;
-
- if (uctrl_msg->ctrl_msg_wire.magic != UDEV_CTRL_MAGIC) {
- err(uctrl->udev, "message magic 0x%08x doesn't match, ignore it\n", uctrl_msg->ctrl_msg_wire.magic);
- goto err;
- }
-
- dbg(uctrl->udev, "created ctrl_msg %p (%i)\n", uctrl_msg, uctrl_msg->ctrl_msg_wire.type);
- return uctrl_msg;
-err:
- udev_ctrl_msg_unref(uctrl_msg);
- return NULL;
-}
-
-struct udev_ctrl_msg *udev_ctrl_msg_ref(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg == NULL)
- return NULL;
- ctrl_msg->refcount++;
- return ctrl_msg;
-}
-
-void udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg == NULL)
- return;
- ctrl_msg->refcount--;
- if (ctrl_msg->refcount > 0)
- return;
- dbg(ctrl_msg->uctrl->udev, "release ctrl_msg %p\n", ctrl_msg);
- free(ctrl_msg);
-}
-
-int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_LOG_LEVEL)
- return ctrl_msg->ctrl_msg_wire.intval;
- return -1;
-}
-
-int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_STOP_EXEC_QUEUE)
- return 1;
- return -1;
-}
-
-int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_START_EXEC_QUEUE)
- return 1;
- return -1;
-}
-
-int udev_ctrl_get_reload_rules(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_RELOAD_RULES)
- return 1;
- return -1;
-}
-
-const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_ENV)
- return ctrl_msg->ctrl_msg_wire.buf;
- return NULL;
-}
-
-int udev_ctrl_get_set_max_childs(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SET_MAX_CHILDS)
- return ctrl_msg->ctrl_msg_wire.intval;
- return -1;
-}
-
-pid_t udev_ctrl_get_settle(struct udev_ctrl_msg *ctrl_msg)
-{
- if (ctrl_msg->ctrl_msg_wire.type == UDEV_CTRL_SETTLE)
- return ctrl_msg->pid;
- return -1;
-}