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READLINK(2) FreeBSD System Calls Manual READLINK(2)
NAME
readlink -- read value of a symbolic link
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
readlink(const char *path, char *buf, int bufsiz);
DESCRIPTION
The readlink() system call places the contents of the symbolic link path
in the buffer buf, which has size bufsiz. The readlink() system call
does not append a NUL character to buf.
RETURN VALUES
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.
ERRORS
The readlink() system call will fail if:
[ENOTDIR] A component of the path prefix is not a directory.
[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 translat-
ing the pathname.
[EINVAL] The named file is not a symbolic link.
[EIO] An I/O error occurred while reading from the file sys-
tem.
[EFAULT] The buf argument extends outside the process's allo-
cated address space.
SEE ALSO
lstat(2), stat(2), symlink(2), symlink(7)
HISTORY
The readlink() system call appeared in 4.2BSD.
FreeBSD 6.2 June 4, 1993 FreeBSD 6.2
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This page was generated on Wed Sep 19 20:03:51 BST 2007
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