增加编译tool项目

tools/Makefile

@@ -0,0 +1,2 @@
+daeml: daeml.cpp
+	g++ -Wall -o ../bin/daeml daeml.cpp

tools/daeml.cpp

@@ -0,0 +1,124 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <errno.h>
+
+/* closeall() -- close all FDs >= a specified value */
+
+void closeall(int fd)
+{
+    int fdlimit = sysconf(_SC_OPEN_MAX);
+    
+    if (fdlimit > 128) {
+        fdlimit = 128;
+    }
+    
+    while (fd < fdlimit)
+        close(fd++);
+}
+
+
+/* daemon() - detach process from user and disappear into the background
+ * returns -1 on failure, but you can't do much except exit in that case
+ * since we may already have forked. This is based on the BSD version,
+ * so the caller is responsible for things like the umask, etc.
+ */
+
+int daemon(int nochdir, int noclose, int asroot)
+{
+    switch (fork())
+    {
+        case 0:  break;
+        case -1: return -1;
+        default: _exit(0);          /* exit the original process */
+    }
+    
+    if (setsid() < 0)               /* shoudn't fail */
+        return -1;
+    
+    if ( !asroot && (setuid(1) < 0) )              /* shoudn't fail */
+        return -1;
+    
+    /* dyke out this switch if you want to acquire a control tty in */
+    /* the future -- not normally advisable for daemons */
+    
+    switch (fork())
+    {
+        case 0:  break;
+        case -1: return -1;
+        default: _exit(0);
+    }
+    
+    if (!nochdir)
+        chdir("/");
+    
+    if (!noclose)
+    {
+        closeall(0);
+        
+        int fd = open("/dev/null", O_RDWR, 0);
+        if (fd < 0) {
+            printf("open failed, errno=%d\n", errno);
+            return -1;
+        }
+        
+        dup2(fd, STDIN_FILENO);
+        dup2(fd, STDOUT_FILENO);
+        dup2(fd, STDERR_FILENO);
+    }
+    
+    return 0;
+}
+
+#define TEXT(a) a
+void PrintUsage(char* name)
+{
+    printf (
+            TEXT("\n ----- \n\n")
+            TEXT("Usage:\n")
+            TEXT("   	%s program_name \n\n")
+            TEXT("Where:\n")
+            TEXT("   	%s - Name of this Daemon loader.\n")
+            TEXT("   	program_name - Name (including path) of the program you want to load as daemon.\n\n")
+            TEXT("Example:\n")
+            TEXT("   	%s ./atprcmgr - Launch program 'atprcmgr' in current directory as daemon. \n\n\n\n"),
+            name, name, name
+            );
+}
+
+int main(int argc, char* argv[])
+{
+    printf(
+           TEXT("\n")
+           TEXT("Daemon loader\n")
+           TEXT("- Launch specified program as daemon.\n")
+           //TEXT("- Require root privilege to launch successfully.\n\n\n")
+           );
+    
+    if (argc < 2)
+    {
+        printf("* Missing parameter : daemon program name not specified!\n");
+        PrintUsage(argv[0]);
+        exit(0);
+    }
+    
+    printf("- Loading %s as daemon, please wait ......\n\n\n", argv[1]);
+    
+    if (daemon(1, 0, 1) >= 0)
+    {
+        signal(SIGCHLD, SIG_IGN);
+        
+        //execl(argv[1], argv[1], NULL);
+        execv(argv[1], argv + 1);
+        printf("! Excute daemon programm %s failed. \n", argv[1]);
+        
+        exit(0);
+    }
+    
+    printf("! Create daemon error. Please check if you have 'root' privilege. \n");
+    return 0;
+}