system call operates in exactly the same way as
except for the differences described in this manual page.
If the pathname given in
is relative, then it is interpreted relative to the directory
referred to by the file descriptor
(rather than relative to the current working directory of
the calling process, as is done by
for a relative pathname).
is relative and
is the special value
is interpreted relative to the current working
directory of the calling process (like
is absolute, then
On error, -1 is returned and
is set to indicate the error.
The same errors that occur for
can also occur for
The following additional errors can occur for
is not a valid file descriptor.
is a relative path and
is a file descriptor referring to a file other than a directory.
was added to glibc in version 2.4.
It is implemented using
available on Linux since kernel 2.6.16.
for an explanation of the need for