Trying to create a Directory using system call - not working

[tvnaidu]

I am trying to create a directory "/log" in linux in below file, it is not creating, I commented windows call and added linux call ro create /log dir.

#define DEFAULT_LOG_DIR "/log"

void main()
{
char dirName[64];

strcpy(dirName, DEFAULT_LOG_DIR );

//_mkdir(dirName) //this is windows mkdir
system("mkdir dirName"); //LINUX

}

[Markus]

You'll need permissions to do that. See libgksu to authenticate your command.

[tvnaidu]

I have permisson, still not able to create /log dir.

[RRick]

In linux, the root directory /, is owned and controlled by the root account. You need to be root or have root privileges to create a directory there.

BTW: Try strace with this executable. It should tell you what is happening during the directory creation.

[weaknessforcats]

Your mkdir needs a string:

"mkdir $/Hello/world/logfile.log"

You are passing "mkdir dirname". Are you nintending to create a direcory named dirname?

[tvnaidu]

I need to create /log directory which I defined with #define.
I have root perm.

[RRick]

What does strace tell you?