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READLINK (2) | System calls | Unix Manual Pages | :man

NAME

readlink - read value of a symbolic link

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
History

LIBRARY


.Lb libc

SYNOPSIS


.In 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 succeeds, 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 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]
The buf argument extends outside the process’s allocated address space.

SEE ALSO

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

HISTORY


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