1FATTACH(3P)                POSIX Programmer's Manual               FATTACH(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       fattach - attach a STREAMS-based file descriptor to a file in the  file
13       system name space (STREAMS)
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SYNOPSIS

16       #include <stropts.h>
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18       int fattach(int fildes, const char *path);
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DESCRIPTION

22       The  fattach() function shall attach a STREAMS-based file descriptor to
23       a file, effectively associating a pathname with fildes. The application
24       shall  ensure  that the fildes argument is a valid open file descriptor
25       associated with a STREAMS file. The path argument points to a  pathname
26       of  an existing file. The application shall have the appropriate privi‐
27       leges or be the owner of the file named by path and have write  permis‐
28       sion.  A  successful  call  to fattach() shall cause all pathnames that
29       name the file named by path to name the STREAMS  file  associated  with
30       fildes,  until  the  STREAMS  file is detached from the file. A STREAMS
31       file can be attached to more than one file and can have  several  path‐
32       names associated with it.
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34       The  attributes  of the named STREAMS file shall be initialized as fol‐
35       lows: the permissions, user ID, group ID, and times are set to those of
36       the  file  named by path, the number of links is set to 1, and the size
37       and device identifier are set to those of the STREAMS  file  associated
38       with  fildes.  If  any  attributes of the named STREAMS file are subse‐
39       quently changed (for example, by chmod()), neither  the  attributes  of
40       the  underlying  file  nor  the attributes of the STREAMS file to which
41       fildes refers shall be affected.
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43       File descriptors referring to the underlying file, opened prior  to  an
44       fattach() call, shall continue to refer to the underlying file.
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RETURN VALUE

47       Upon  successful  completion,  fattach()  shall return 0. Otherwise, -1
48       shall be returned and errno set to indicate the error.
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ERRORS

51       The fattach() function shall fail if:
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53       EACCES Search permission is denied for a component of the path  prefix,
54              or the process is the owner of path but does not have write per‐
55              missions on the file named by path.
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57       EBADF  The fildes argument is not a valid open file descriptor.
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59       EBUSY  The file named by path is currently  a  mount  point  or  has  a
60              STREAMS file attached to it.
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62       ELOOP  A loop exists in symbolic links encountered during resolution of
63              the path argument.
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65       ENAMETOOLONG
66              The size of path exceeds {PATH_MAX} or a component  of  path  is
67              longer than {NAME_MAX}.
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69       ENOENT A component of path does not name an existing file or path is an
70              empty string.
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72       ENOTDIR
73              A component of the path prefix is not a directory.
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75       EPE