Mail Archives: cygwin/2000/11/02/09:56:57
--- Christopher Faylor <cgf AT redhat DOT com> wrote:
> On Wed, Nov 01, 2000 at 02:18:23PM -0500, Robinow, David wrote:
> >> It's definitely 'getcwd(NULL, 0)' in Chuck's sources.
> > Also in 5.7.0 development sources.
> >> I think I'll just revert the behavior. It appears that a number of
> >> packages are expecting it.
> > Is there a reason these packages can't be fixed?
> > Is 'getcwd(NULL, -1)' broken in some version?
>
> Not that I know of, but Corinna has pointed out that some versions of linux
> suggest that getcwd(NULL, 0) is ok and, possibly, BSD allows this
> construction.
>
> So, I think we'll be constantly responding to this on the mailing list. I'd
> rather just "fix" cygwin.
>
The Linux man page is even less helpful.
Linux getcwd.3
NAME
getcwd, get_current_dir_name, getwd - Get current working
directory
SYNOPSIS
#include <unistd.h>
char *getcwd(char *buf, size_t size);
char *get_current_working_dir_name(void);
char *getwd(char *buf);
DESCRIPTION
The getcwd() function copies the absolute pathname of the
current working directory to the array pointed to by buf,
which is of length size.
If the current absolute path name would require a buffer
longer than size elements, NULL is returned, and errno is
set to ERANGE; an application should check for this error,
and allocate a larger buffer if necessary.
As an extension to the POSIX.1 standard, getcwd() allo-
cates the buffer dynamically using malloc() if buf is NULL
on call. In this case, the allocated buffer has the
length size unless size is less than zero, when buf is
allocated as big as necessary. It is possible (and,
indeed, advisable) to free() the buffers if they have been
obtained this way.
get_current_dir_name, which is only prototyped if
__USE_GNU is defined, will malloc(3) an array big enough
to hold the current directory name. If the environment
variable PWD is set, and its value is correct, then that
value will be returned.
getwd, which is only prototyped if __USE_BSD is defined,
will malloc(3) an array big enough to hold the absolute
pathname of the current working directory.
RETURN VALUE
NULL on failure (for example, if the current directory is
not readable), with errno set accordingly, and buf on suc-
cess.
CONFORMS TO
POSIX.1
SEE ALSO
chdir(2), ,free(3), malloc(3)
=====
Earnie Boyd
mailto:earnie_boyd AT yahoo DOT com
--- <http://earniesystems.safeshopper.com> ---
--- Cygwin: POSIX on Windows <http://gw32.freeyellow.com/> ---
--- Minimalist GNU for Windows <http://www.mingw.org/> ---
__________________________________________________
Do You Yahoo!?
From homework help to love advice, Yahoo! Experts has your answer.
http://experts.yahoo.com/
--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com
- Raw text -