RTEMS 4.6.1 On-Line Library

Files and Directories Manager link - Creates a link to a file

RTEMS POSIX API User's Guide

#include <unistd.h>

int link(
  const char *existing,
  const char *new
);

EACCES: Search permission is denied for a directory in a file's path prefix
EEXIST: The named file already exists.
EMLINK: The number of links would exceed LINK_MAX.
ENAMETOOLONG: Length of a filename string exceeds PATH_MAX and _POSIX_NO_TRUNC is in effect.
ENOENT: A file or directory does not exist.
ENOSPC: No space left on disk.
ENOTDIR: A component of the specified pathname was not a directory when a directory was expected.
EPERM: Operation is not permitted. Process does not have the appropriate priviledges or permissions to perform the requested operations.
EROFS: Read-only file system.
EXDEV: Attempt to link a file to another file system.

The link() function atomically creates a new link for an existing file and increments the link count for the file.

If the link() function fails, no directories are modified.

The existing argument should not be a directory.

The caller may (or may not) need permission to access the existing file.

NONE

RTEMS POSIX API User's Guide