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c++linuxfile-locking

Lock / Prevent edit of source files on Linux using C++

How can I programmatically lock/unlock, or otherwise prevent/enable editing, a source file on Linux using C++.

I want to be able to lock source file so that if I open it in an editor it will not allow me to save back to the same source file.

I am thinking of maybe changing the permissions to read-only (and change it back to read-write later): how do I do that from C++?

Solution

  • Try man fchmod:

    NAME
       chmod, fchmod - change permissions of a file

SYNOPSIS
       #include <sys/types.h>
       #include <sys/stat.h>

       int chmod(const char *path, mode_t mode);
       int fchmod(int fildes, mode_t mode);