icon Top 9 categories map      RocketAware > man pages >


Tips: Browse or Search all pages for efficient awareness of more than 6000 of the most popular reusable and open source applications, functions, libraries, and FAQs.

The "RKT couplings" below include links to source code, updates, additional information, advice, FAQs, and overviews.


Search all pages


By activity
Professions, Sciences, Humanities, Business, ...

User Interface
Text-based, GUI, Audio, Video, Keyboards, Mouse, Images,...

Text Strings
Conversions, tests, processing, manipulation,...

Integer, Floating point, Matrix, Statistics, Boolean, ...

Algorithms, Memory, Process control, Debugging, ...

Stored Data
Data storage, Integrity, Encryption, Compression, ...

Networks, protocols, Interprocess, Remote, Client Server, ...

Hard World
Timing, Calendar and Clock, Audio, Video, Printer, Controls...

File System
Management, Filtering, File & Directory access, Viewers, ...


RocketLink!--> Man page versions: OpenBSD FreeBSD NetBSD Others

PATHCONF(2)               OpenBSD Programmer's Manual              PATHCONF(2)

     pathconf, fpathconf - get configurable pathname variables

     #include <unistd.h>

     pathconf(const char *path, int name);

     fpathconf(int fd, int name);

     The pathconf() and fpathconf() functions provides a method for applica-
     tions to determine the current value of a configurable system limit or
     option variable associated with a pathname or file descriptor.

     For pathconf, the path argument is the name of a file or directory.  For
     fpathconf, the fd argument is an open file descriptor.  The name argument
     specifies the system variable to be queried.  Symbolic constants for each
     name value are found in the include file <unistd.h>.

     The available values are as follows:

             The maximum file link count.

             The maximum number of bytes in terminal canonical input line.

             The minimum maximum number of bytes for which space is available
             in a terminal input queue.

             The maximum number of bytes in a file name.

             The maximum number of bytes in a pathname.

             The maximum number of bytes which will be written atomically to a

             Return 1 if appropriate privileges are required for the chown(2)
             system call, otherwise 0.

             Return 1 if file names longer than KERN_NAME_MAX are truncated.

             Returns the terminal character disabling value.

     If the call to pathconf or fpathconf is not successful, -1 is returned
     and errno is set appropriately.  Otherwise, if the variable is associated
     with functionality that does not have a limit in the system, -1 is re-
     turned and errno is not modified.  Otherwise, the current variable value
     is returned.

     If any of the following conditions occur, the pathconf and fpathconf

     functions shall return -1 and set errno to the corresponding value.

     [EINVAL]      The value of the name argument is invalid.

     [EINVAL]      The implementation does not support an association of the
                   variable name with the associated file.
     pathconf() will fail if:

     [ENOTDIR]       A component of the path prefix is not a directory.

     [ENAMETOOLONG]  A component of a pathname exceeded 255 characters, or an
                     entire path name exceeded 1023 characters.

     [ENOENT]        The named file does not exist.

     [EACCES]        Search permission is denied for a component of the path

     [ELOOP]         Too many symbolic links were encountered in translating
                     the pathname.

     [EIO]           An I/O error occurred while reading from or writing to
                     the file system.

     fpathconf() will fail if:

     [EBADF]   fd is not a valid open file descriptor.

     [EIO]     An I/O error occurred while reading from or writing to the file


     The pathconf and fpathconf functions first appeared in 4.4BSD.

OpenBSD 2.6                      June 4, 1993                                2

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.

(Corrections, notes, and links courtesy of RocketAware.com)

[Detailed Topics]

[Overview Topics]

Up to: File Access - Operations affecting a file as a whole. (delete files, rename, truncate, etc.)

RocketLink!--> Man page versions: OpenBSD FreeBSD NetBSD Others

Rapid-Links: Search | About | Comments | Submit Path: RocketAware > man pages > pathconf.2/
RocketAware.com is a service of Mib Software
Copyright 1999, Forrest J. Cavalier III. All Rights Reserved.
We welcome submissions and comments