add a cpio implementation to tools directory

cpio utility is a mess in point of portability.
For example NetBSD cpio implementation does not support
userid and groupid changes for the archive. This
feature is required for initramfs filesystem targets.
This cpio is from the Heirloom project.

Fix needed rebuild of tools, when changing targets.

1 files changed, 197 insertions, 0 deletions

diff --git a/tools/cpio/src/getdir.c b/tools/cpio/src/getdir.c
new file mode 100644
index 000000000..245b7641e
--- /dev/null
+++ b/tools/cpio/src/getdir.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 2003 Gunnar Ritter
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute
+ * it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+/*	Sccsid @(#)getdir.c	1.20 (gritter) 5/14/06	*/
+
+#ifndef	__linux__
+/*
+ * 32-bit Solaris and Open UNIX do not have 64-bit getdents(); but
+ * having _FILE_OFFSET_BITS=64 will make it use a dirent64 struct
+ * on Open UNIX -> SEGV.
+ */
+#undef	_FILE_OFFSET_BITS
+#endif	/* !__linux__ */
+
+#include	<sys/types.h>
+#include	<sys/stat.h>
+#include	<stdlib.h>
+#include	<errno.h>
+#include	<string.h>
+
+#if defined (__UCLIBC__)
+#include <linux/types.h>
+#include <linux/dirent.h>
+#define	getdents(a, b, c)	__getdents64(a, b, c)
+#define	dirent	dirent64
+extern int	getdents(int, struct dirent *, size_t);
+#elif defined	(__GLIBC__) || defined (__FreeBSD__) || defined (_AIX) || \
+	defined (__NetBSD__) || defined (__OpenBSD__) || \
+	defined (__DragonFly__) || defined (__APPLE__)
+#include	<dirent.h>
+#define	getdents(a, b, c)	getdirentries((a), (char *)(b), (c), &(db->g_offs))
+#if defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || \
+	defined (__DragonFly__) || defined (__APPLE__)
+#undef	d_ino
+#endif	/* __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__
+	 || __APPLE__ */
+#elif defined	(__dietlibc__)
+#include	<dirent.h>
+#include	<unistd.h>
+#else		/* !__GLIBC__, !__dietlibc__ */
+#ifdef	__hpux
+#define		_KERNEL
+#endif	/* __hpux */
+#include	<sys/dirent.h>
+#ifdef		__hpux
+#ifndef	_INO64_T
+typedef	unsigned long long	uint64_t;
+typedef	uint64_t	ino64_t;
+#endif	/* !_INO64_T */
+#ifdef	__LP64__
+#define	dirent		__dirent64
+#else	/* !__LP64__ */
+#define	dirent		__dirent32
+#endif	/* !__LP64__ */
+#define	d_reclen	__d_reclen
+#define	d_name		__d_name
+#define	d_ino		__d_ino
+#endif		/* __hpux */
+#endif		/* !__GLIBC__, !__dietlibc__ */
+
+#include	"getdir.h"
+
+#define	DIBSIZE	5120
+
+struct	getdb {
+#if !defined (__FreeBSD__) && !defined (__NetBSD__) && !defined (__OpenBSD__) \
+		&& !defined (__DragonFly__) && !defined (__APPLE__)
+	off_t		g_offs;
+#else	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+	long		g_offs;
+#endif	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+	struct dirent	*g_dirp;
+	const char	*g_path;
+	struct direc	g_dic;
+	union {
+		char		g_dirbuf[DIBSIZE+1];
+		struct dirent	g_dummy[1];
+	} g_u;
+	int		g_num;
+	int		g_fd;
+};
+
+struct getdb *
+getdb_alloc(const char *path, int fd)
+{
+	struct getdb	*db;
+
+	if ((db = malloc(sizeof *db)) == NULL)
+		return NULL;
+	db->g_dirp = NULL;
+	db->g_offs = 0;
+	db->g_fd = fd;
+	db->g_path = path;
+	return db;
+}
+
+void
+getdb_free(struct getdb *db)
+{
+	free(db);
+}
+
+struct direc *
+getdir(struct getdb *db, int *err)
+{
+	int	reclen;
+
+	*err = 0;
+	while (db->g_dirp == NULL)
+	{
+		/*LINTED*/
+		db->g_num = getdents(db->g_fd,
+				(struct dirent *)db->g_u.g_dirbuf,
+				DIBSIZE);
+		if (db->g_num <= 0) {
+			if (db->g_num < 0)
+				*err = errno;
+			db->g_offs = 0;
+			return NULL;
+		}
+		/*LINTED*/
+		db->g_dirp = (struct dirent *)db->g_u.g_dirbuf;
+		while (db->g_dirp &&
+#if !defined (__FreeBSD__) && !defined (__NetBSD__) && !defined (__OpenBSD__) \
+		&& !defined (__DragonFly__) && !defined (__APPLE__)
+				db->g_dirp->d_ino == 0
+#else	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+				(db->g_dirp->d_fileno == 0
+#ifdef DT_WHT
+				  || db->g_dirp->d_type == DT_WHT
+#endif
+				  )
+#endif	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+		      )
+		{
+		next:
+#ifndef	__DragonFly__
+			reclen = db->g_dirp->d_reclen;
+#else
+			reclen = _DIRENT_DIRSIZ(db->g_dirp);
+#endif
+			if ((db->g_num -= reclen) == 0 || reclen == 0)
+				db->g_dirp = NULL;
+			else
+				db->g_dirp =
+					/*LINTED*/
+					(struct dirent *)((char *)db->g_dirp
+						+ reclen);
+		}
+	}
+#if !defined (__FreeBSD__) && !defined (__NetBSD__) && !defined (__OpenBSD__) \
+		&& !defined (__DragonFly__) && !defined (__APPLE__)
+	if (db->g_dirp->d_ino == 0)
+		goto next;
+	db->g_dic.d_ino = db->g_dirp->d_ino;
+#else	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+	if (db->g_dirp->d_fileno == 0
+#ifdef DT_WHT
+	    || db->g_dirp->d_type == DT_WHT
+#endif
+	    )
+	{
+		goto next;
+	}
+	db->g_dic.d_ino = db->g_dirp->d_fileno;
+#endif	/* __FreeBSD__, __NetBSD__, __OpenBSD__, __DragonFly__, __APPLE__ */
+	db->g_dic.d_name = db->g_dirp->d_name;
+#ifndef	__DragonFly__
+		reclen = db->g_dirp->d_reclen;
+#else
+		reclen = _DIRENT_DIRSIZ(db->g_dirp);
+#endif
+	if ((db->g_num -= reclen) == 0 || reclen == 0)
+		db->g_dirp = NULL;
+	else
+		/*LINTED*/
+		db->g_dirp = (struct dirent *)((char *)db->g_dirp + reclen);
+	return &(db->g_dic);
+}