int symlink(const char *oldpath, const char *newpath);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
_BSD_SOURCE || _XOPEN_SOURCE >= 500 ||
_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED ||
_POSIX_C_SOURCE >= 200112L
symlink() creates a symbolic link named newpath which contains the
Symbolic links are interpreted at run time as if the contents of the
link had been substituted into the path being followed to find a file
Symbolic links may contain .. path components, which (if used at the
start of the link) refer to the parent directories of that in which the
A symbolic link (also known as a soft link) may point to an existing
file or to a nonexistent one; the latter case is known as a dangling
The permissions of a symbolic link are irrelevant; the ownership is
ignored when following the link, but is checked when removal or renam-
ing of the link is requested and the link is in a directory with the
sticky bit (S_ISVTX) set.
If newpath exists it will not be overwritten.
On success, zero is returned. On error, -1 is returned, and errno is
EACCES Write access to the directory containing newpath is denied, or
one of the directories in the path prefix of newpath did not
allow search permission. (See also path_resolution(7).)
EDQUOT The user's quota of resources on the filesystem has been
exhausted. The resources could be inodes or disk blocks,
depending on the filesystem implementation.
EEXIST newpath already exists.
EFAULT oldpath or newpath points outside your accessible address space.
EIO An I/O error occurred.
A component used as a directory in newpath is not, in fact, a
EPERM The filesystem containing newpath does not support the creation
of symbolic links.
EROFS newpath is on a read-only filesystem.
SVr4, 4.3BSD, POSIX.1-2001.
No checking of oldpath is done.
Deleting the name referred to by a symlink will actually delete the
file (unless it also has other hard links). If this behavior is not
desired, use link(2).
ln(1), lchown(2), link(2), lstat(2), open(2), readlink(2), rename(2),
symlinkat(2), unlink(2), path_resolution(7), symlink(7)
This page is part of release 3.54 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2013-01-27 SYMLINK(2)
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