Question

I open a file using the system call open().

if ((fd2 = open(logFile, O_RDWR |O_APPEND | O_CREAT ), 0666) == -1)
    DieWithError("open() failed");

My file which is FTP_track.log is created without any problem. The problem is although i have mode 0666, which is read and write for all, I can not open the file in unix. I have to change permissions from the file’s properties to read and write.

Any ideas? Thank you.

Answer 1

The problem with your line is that the parenthesis don’t match up. Your expression is parsed as fd2 = open(), 0666. In C the expression expr1, expr2 has the value expr2 so your if statement basically says fd2 = 0666.