Garbage Value in File after write

Question

I am making a log function which stores in a file.

int log_func(char* msg)
{
    int log_fd=0;
    ssize_t write_ret=0;
    int close_logfile_ret=0;
    time_t r         


        

Answer 1

You write the whole error_msg array, even the contents after the string terminator. Instead you should use strlen to get the length of the string in the array, and only write that:

write_ret = write(log_fd, error_msg, strlen(error_msg));