readlink(2) [osx man page]

READLINK(2)						      BSD System Calls Manual						       READLINK(2)

NAME

     readlink -- read value of a symbolic link

SYNOPSIS

     #include <unistd.h>

     ssize_t
     readlink(const char *restrict path, char *restrict buf, size_t bufsize);

DESCRIPTION

     Readlink() places the contents of the symbolic link path in the buffer buf, which has size bufsize.  Readlink does not append a NUL character
     to buf.

RETURN VALUES

     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 the
     global variable errno.

ERRORS

     Readlink() will fail if:

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

     [EFAULT]		Buf extends outside the process's allocated address space.

     [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 are encountered in translating the pathname.  This is taken to be indicative of a looping symbolic
			link.

     [ENAMETOOLONG]	A component of a pathname exceeded {NAME_MAX} characters, or an entire path name (possibly expanded by a symbolic link)
			exceeded {PATH_MAX} characters.

     [ENOENT]		The named file does not exist.

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

LEGACY SYNOPSIS

     #include <unistd.h>

     int
     readlink(const char *path, char *buf, int bufsize);

     The function type and the type of bufsize have changed.

SEE ALSO

     lstat(2), stat(2), symlink(2), compat(5), symlink(7)

HISTORY

     The readlink() function call appeared in 4.2BSD.

4.2 Berkeley Distribution					   June 4, 1993 					 4.2 Berkeley Distribution

Check Out this Related Man Page

READLINK(2)							System Calls Manual						       READLINK(2)

NAME

       readlink - read value of a symbolic link

SYNOPSIS

       cc = readlink(path, buf, bufsiz)
       int cc;
       char *path, *buf;
       int bufsiz;

DESCRIPTION

       Readlink  places  the  contents	of the symbolic link name in the buffer buf, which has size bufsiz.  The contents of the link are not null
       terminated when returned.

RETURN VALUE

       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  the
       global variable errno.

ERRORS

       Readlink will fail and the file mode will be unchanged if:

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

       [EINVAL]       The pathname contains a character with the high-order bit set.

       [ENAMETOOLONG] 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 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.

SEE ALSO

       stat(2), lstat(2), symlink(2)

4.2 Berkeley Distribution					  August 26, 1985						       READLINK(2)

Linux and UNIX Man Pages

readlink(2) [osx man page]

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