Provided by: manpages-dev_2.17-1_all
readlink - read value of a symbolic link
int readlink(const char *path, char *buf, size_t bufsiz);
readlink() places the contents of the symbolic link path in the buffer
buf, which has size bufsiz. readlink() does not append a NUL character
to buf. It will truncate the contents (to a length of bufsiz
characters), in case the buffer is too small to hold all of the
The call returns the count of characters placed in the buffer if it
succeeds, or a -1 if an error occurs, placing the error code in errno.
EACCES Search permission is denied for a component of the path prefix.
(See also path_resolution(2).)
EFAULT buf extends outside the process’s allocated address space.
EINVAL bufsiz is not positive.
EINVAL The named file is not a symbolic link.
EIO An I/O error occurred while reading from the file system.
ELOOP Too many symbolic links were encountered in translating the
A pathname, or a component of a pathname, was too long.
ENOENT The named file does not exist.
ENOMEM Insufficient kernel memory was available.
A component of the path prefix is not a directory.
X/OPEN, 4.4BSD (the readlink() function call appeared in 4.2BSD).
lstat(2), path_resolution(2), stat(2), symlink(2)