fdetach - detach a name from a STREAMS-based file descriptor
int fdetach(const char *path);
The fdetach() function detaches a STREAMS-based file from
the file to which it was attached by a previous call to
fattach(3C). The path argument points to the pathname of the
attached STREAMS file. The process must have appropriate
privileges or be the owner of the file. A successful call to
fdetach() causes all pathnames that named the attached
STREAMS file to again name the file to which the STREAMS
file was attached. All subsequent operations on path will
operate on the underlying file and not on the STREAMS file.
All open file descriptions established while the STREAMS
file was attached to the file referenced by path, will still
refer to the STREAMS file after the fdetach() has taken
If there are no open file descriptors or other references to
the STREAMS file, then a successful call to fdetach() has
the same effect as performing the last close(2) on the
Upon successful completion, fdetach() returns 0. Otherwise,
it returns -1 and sets errno to indicate the error.
The fdetach() function will fail if:
Search permission is denied on a component of the path
EPERM The effective user ID is not the owner of path and the
process does not have appropriate privileges.
A component of the path prefix is not a directory.
A component of path does not name an existing file or
path is an empty string.
The path argument names a file that is not currently
The size of a pathname exceeds PATH_MAX, or a pathname
component is longer than NAME_MAX while
_POSIX_NO_TRUNC is in effect.
ELOOP Too many symbolic links were encountered in resolving
The fdetach() function may fail if:
Pathname resolution of a symbolic link produced an
intermediate result whose length exceeds PATH_MAX.
fdetach(1M), close(2), fattach(3C), streamio(7I)
STREAMS Programming Guide
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