Create a file in Linux using C

Question

I am trying to create a write only file in C on Linux (Ubuntu). This is my code:

 int fd2 = open (\"/tmp/test.svg\", O_RDWR|O_CREAT);

 if (fd2 != -1) {
   //...         


        

Answer 1

Give access permissions as the third parameter:

int fd2 = open("/tmp/test.svg", O_RDWR|O_CREAT, 0777);  // Originally 777 (see comments)

if (fd2 != -1) {
    // use file descriptor
    close(fd2);
}

By doing this, all read, write and execute permissions will be given to user, group and others. Modify the 3rd parameter according to your use.