symlink(2) [opensolaris man page]

symlink(2)							   System Calls 							symlink(2)

NAME

       symlink - make a symbolic link to a file

SYNOPSIS

       #include <unistd.h>

       int symlink(const char *name1, const char *name2);

DESCRIPTION

       The  symlink() function creates a symbolic link name2 to the file name1. Either name may be an arbitrary pathname, the files need not be on
       the same file system, and name1 may be nonexistent.

       The file to which the symbolic link points is used when an open(2) operation is performed on the link. A stat() operation  performed  on  a
       symbolic  link  returns	the linked-to file, while an lstat() operation returns information about the link itself.  See stat(2). Unexpected
       results may occur when a symbolic link is made to a directory. To avoid confusion in applications, the readlink(2) call can be used to read
       the contents of a symbolic link.

RETURN VALUES

       Upon  successful  completion,  0  is returned.  Otherwise, -1 is returned, errno is set to indicate the error, and the symbolic link is not
       made.

ERRORS

       The symlink() function will fail if:

       EACCES	       Search permission is denied for a component of the path prefix of name2.

       EDQUOT	       The directory where the entry for the new symbolic link is being placed cannot be extended because the user's quota of disk
		       blocks  on  that  file  system has been exhausted; the new symbolic link cannot be created because the user's quota of disk
		       blocks on that file system has been exhausted; or the user's quota of inodes on the file system where  the  file  is  being
		       created has been exhausted.

       EEXIST	       The file referred to by name2 already exists.

       EFAULT	       The name1 or name2 argument points to an illegal address.

       EILSEQ	       The path argument includes non-UTF8 characters and the file system accepts only file names where all characters are part of
		       the UTF-8 character codeset.

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

       ELOOP	       Too many symbolic links are encountered in translating name2.

       ENAMETOOLONG    The length of  the  name2  argument  exceeds  PATH_MAX,	or  the  length  of  a	name2  component  exceeds  NAME_MAX  while
		       _POSIX_NO_TRUNC is in effect.

       ENOENT	       A component of the path prefix of name2 does not exist.

       ENOSPC	       The  directory  in which the entry for the new symbolic link is being placed cannot be extended because no space is left on
		       the file system containing the directory; the new symbolic link cannot be created because no space is left on the file sys-
		       tem which will contain the link; or there are no free inodes on the file system on which the file is being created.

       ENOSYS	       The file system does not support symbolic links.

       ENOTDIR	       A component of the path prefix of name2 is not a directory.

       EROFS	       The file name2 would reside on a read-only file system.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cp(1), link(2), open(2), readlink(2), stat(2), unlink(2), attributes(5)

SunOS 5.11							    18 May 2007 							symlink(2)

SYMLINK(2)						      BSD System Calls Manual							SYMLINK(2)

NAME

     symlink, symlinkat -- make symbolic link to a file

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     int
     symlink(const char *name1, const char *name2);

     int
     symlinkat(const char *name1, int fd, const char *name2);

DESCRIPTION

     A symbolic link name2 is created to name1 (name2 is the name of the file created, name1 is the string used in creating the symbolic link).
     Either name may be an arbitrary path name; the files need not be on the same file system.

     The symlinkat() system call is equivalent to symlink() except in the case where name2 specifies a relative path.  In this case the symbolic
     link is created relative to the directory associated with the file descriptor fd instead of the current working directory.  If symlinkat() is
     passed the special value AT_FDCWD in the fd parameter, the current working directory is used and the behavior is identical to a call to
     symlink().

RETURN VALUES

     The symlink() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
     the error.

ERRORS

     The symbolic link succeeds unless:

     [ENOTDIR]		A component of the name2 path prefix is not a directory.

     [ENAMETOOLONG]	A component of the name2 pathname exceeded 255 characters, or the entire length of either path name exceeded 1023 charac-
			ters.

     [ENOENT]		A component of the name2 path prefix does not exist.

     [EACCES]		A component of the name2 path prefix denies search permission, or write permission is denied on the parent directory of
			the file to be created.

     [ELOOP]		Too many symbolic links were encountered in translating the name2 path name.

     [EEXIST]		The path name pointed at by the name2 argument already exists.

     [EPERM]		The parent directory of the file named by name2 has its immutable flag set, see the chflags(2) manual page for more infor-
			mation.

     [EIO]		An I/O error occurred while making the directory entry for name2, or allocating the inode for name2, or writing out the
			link contents of name2.

     [EROFS]		The file name2 would reside on a read-only file system.

     [ENOSPC]		The directory in which the entry for the new symbolic link is being placed cannot be extended because there is no space
			left on the file system containing the directory.

     [ENOSPC]		The new symbolic link cannot be created because there is no space left on the file system that will contain the symbolic
			link.

     [ENOSPC]		There are no free inodes on the file system on which the symbolic link is being created.

     [EDQUOT]		The directory in which the entry for the new symbolic link is being placed cannot be extended because the user's quota of
			disk blocks on the file system containing the directory has been exhausted.

     [EDQUOT]		The new symbolic link cannot be created because the user's quota of disk blocks on the file system that will contain the
			symbolic link has been exhausted.

     [EDQUOT]		The user's quota of inodes on the file system on which the symbolic link is being created has been exhausted.

     [EIO]		An I/O error occurred while making the directory entry or allocating the inode.

     [EFAULT]		The name1 or name2 argument points outside the process's allocated address space.

     In addition to the errors returned by the symlink(), the symlinkat() may fail if:

     [EBADF]		The name2 argument does not specify an absolute path and the fd argument is neither AT_FDCWD nor a valid file descriptor
			open for searching.

     [ENOTDIR]		The name2 argument is not an absolute path and fd is neither AT_FDCWD nor a file descriptor associated with a directory.

SEE ALSO

     ln(1), chflags(2), link(2), lstat(2), readlink(2), unlink(2), symlink(7)

STANDARDS

     The symlinkat() system call follows The Open Group Extended API Set 2 specification.

HISTORY

     The symlink() system call appeared in 4.2BSD.  The symlinkat() system call appeared in FreeBSD 8.0.

BSD
								  April 10, 2008							       BSD