READLINK(2) BSD Programmer's Manual READLINK(2)
readlink - read value of a symbolic link
readlink(const char *path, char *buf, int 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
The call returns the count of characters placed in the buffer if it suc-
ceeds, or a -1 if an error occurs, placing the error code in the global
Readlink() will fail if:
[ENOTDIR] A component of the path prefix is not a directory.
[EINVAL] The pathname contains a character with the high-order bit
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
[EINVAL] The named file is not a symbolic link.
[EIO] An I/O error occurred while reading from the file system.
[EFAULT] Buf extends outside the process's allocated address space.
stat(2), lstat(2), symlink(2) symlink(7),
The readlink function call appeared in 4.2BSD.
4.2 Berkeley Distribution June 4, 1993 1