porting file i/o
Hello, I am porting some C code to the MAC and having difficultly with the file
i/o functions (write, lseek, open, read). They are not returning errors or
setting errno, but they aren't performing the requested operation either. I've
written small test programs that work fine, as soon as I test the code I'm
porting it fails. For example, while trying to write 1024 bytes to a file that
is currently positioned at the end of file write returns a zero. This should
be the number of bytes written or a -1 for an error condition. The file is
open for read/write and there is plenty of disk space, also both of these
conditions should set errno and return -1. Is this something anyone has run
into before? I'd really appreciate some help.
Thanks, Rick