From 09863a10639de265b2299938a292bba15abc570a Mon Sep 17 00:00:00 2001
From: Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com>
Date: Sun, 2 Jun 2019 05:39:48 -0500
Subject: usr.bin/find: replace with heirloom find

---
 usr.bin/find/getdir.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 usr.bin/find/getdir.c

(limited to 'usr.bin/find/getdir.c')

diff --git a/usr.bin/find/getdir.c b/usr.bin/find/getdir.c
new file mode 100644
index 0000000..3b3669d
--- /dev/null
+++ b/usr.bin/find/getdir.c
@@ -0,0 +1,148 @@
+/*
+ * 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	*/
+
+#include	<sys/types.h>
+#include	<sys/stat.h>
+#include	<stdlib.h>
+#include	<errno.h>
+#include	<string.h>
+#include	<dirent.h>
+#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);
+}
-- 
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