readlink(2) - NetBSD Manual Pages

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READLINK(2)               NetBSD Programmer's Manual               READLINK(2)

readlink - read value of a symbolic link
Standard C Library (libc, -lc)
#include <unistd.h> 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.
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 variable errno.
readlink() will fail if: [ENOTDIR] A component of the path prefix is not a directory. [ENAMETOOLONG] A component of a pathname exceeded {NAME_MAX} characters, or an entire path name exceeded {PATH_MAX} characters. [ENOENT] The named file does not exist. [EACCES] Search permission is denied for a component of the path prefix. [ELOOP] Too many symbolic links were encountered in translating the pathname. [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.
lstat(2), stat(2), symlink(2), symlink(7)
The readlink() function call appeared in 4.2BSD. NetBSD 1.6.2 June 4, 1993 1
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