M7350v1_en_gpl

reboot-daemon/Makefile.am

@@ -0,0 +1 @@
+bin_PROGRAMS = reboot-daemon

reboot-daemon/configure.ac

@@ -0,0 +1,39 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.67])
+AC_INIT([reboot-daemon], 1.0)
+AM_INIT_AUTOMAKE([-Wall gnu foreign])
+AC_CONFIG_SRCDIR([reboot-daemon.c])
+AC_CONFIG_HEADERS([config.h])
+
+# Checks for programs.
+AC_PROG_CC
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_CHECK_HEADERS([sys/types.h sys/stat.h unistd.h string.h fcntl.h errno.h stdio.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_HEADER_STDBOOL
+
+# Checks for library functions.
+AC_FUNC_FORK
+AC_FUNC_MALLOC
+AC_CHECK_FUNCS([unlink mknod open chmod chown read strncmp system fprintf perror memset close])
+
+
+AS_CASE([$host],
+    [arm*], [ARM=yes],
+    [ARM=no]
+)
+
+#AM_CONDITIONAL(ARM, [test "x$ARM" = "xyes"])
+AC_SUBST([CFLAGS])
+AC_SUBST([CC])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT

reboot-daemon/reboot-daemon.c

@@ -0,0 +1,130 @@
+/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+/* magic string to reboot upon reading */
+#define REBOOT_STR "REBOOT"
+/* size to make read buffer */
+#define MAX_BUF 64
+/* name of named pipe to read from */
+#define FIFO_NAME "/dev/rebooterdev"
+/* owning user of the named pipe */
+#define UID 0
+/* owning group of the named pipe */
+#define GID 1301
+
+#ifdef DEBUG
+#define debug_printf(args...) fprintf(stderr,"DEBUG: " args)
+#else
+#define debug_printf(args...) ;
+#endif
+
+int main() {
+    int pipe_fd; // file descriptor for fifo
+    char buf[MAX_BUF]; // buffer to store read data in
+    int read_count; //numbef of characters read
+
+    /* delete the fifo if it already exists */
+    debug_printf("Unlinking\n");
+    if(unlink(FIFO_NAME) == -1) {
+        if (errno != ENOENT) {
+            debug_printf("unlink failed: %s\n", strerror(errno));
+        }
+        /* if the file does not exist to be deleted, that is ok */
+    }
+
+    /* create fifo with rw for owner and group */
+    debug_printf("mknodding\n");
+    if(mknod(FIFO_NAME, S_IFIFO | 0660,0) == -1) {
+        debug_printf("mknod failed: %s\n", strerror(errno));
+        return 1;
+    }
+
+    /* set fifo to user rw, group w */
+    debug_printf("chmodding\n");
+    if(chmod(FIFO_NAME, 0620) == -1) {
+        debug_printf("chmod failed: %s\n", strerror(errno));
+        return 1;
+    }
+
+    /* change fifo owner to rebooters group */
+    debug_printf("chowning\n");
+    if(chown(FIFO_NAME,UID,GID) == -1) {
+        debug_printf("chown failed: %s\n", strerror(errno));
+        return 1;
+    }
+
+    /* read and open forever */
+    while(1) {
+
+        /* open fifo for reading */
+        debug_printf("opening\n");
+        pipe_fd = open(FIFO_NAME, O_RDONLY);
+        if(pipe_fd == -1) {
+            debug_printf("open failed: %s\n", strerror(errno));
+            return 1;
+        }
+
+        /* read until an error or reboot */
+        while(1) {
+
+            /* reset the buffer to prevent matching multiple times */
+            memset(buf,0,MAX_BUF);
+
+            /* blocking read from fifo */
+            debug_printf("about to read\n");
+            read_count = read(pipe_fd,buf,MAX_BUF-1);
+            if(read_count <= 0) {
+                debug_printf("read failed: %s\n", strerror(errno));
+                break;
+            }
+
+            debug_printf("read: read_count %d, read: %s\n",read_count,buf);
+
+            /* if read REBOOT_STR, then call reboot */
+            if(strncmp(buf,REBOOT_STR,strlen(REBOOT_STR)) == 0) {
+                debug_printf("going for reboot\n");
+                printf("reboot-daemon: initiating reboot\n");
+                system("reboot");
+                break;
+            }
+        }
+
+        /* close FIFO */
+        debug_printf("closing fifo\n");
+        close(pipe_fd);
+    }
+}