Mega-commit with improvements and changes done in the past days.

- Introduce package states: unpacked, broken, installed, etc.
  Not yet finished, only unpacked and installed are used for now.

- Move package metadata files in binary packages directly to
  the top directory, this speeds up some ops and makes easier to
  continue working in future changes.

- xbps-bin: -C flag to check the hash of package files has been
  superseded by the 'check' target, which verifies the integrity
  of an installed package.

- Use the 'essential' object when upgrading packages, overwritting
  current files. This is needed for critical packages like sh, libc
  and others.

- Miscellaneous tweaks and improvements thorough the code.

--HG--
extra : convert_revision : 2073fcc123efc24b3e9327b5e22aa91752f20df6

lib/configure.c

@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 2009 Juan Romero Pardines.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#include <xbps_api.h>
+
+/*
+ * Configure a package that is currently unpacked. This
+ * runs the post INSTALL action if required and updates the
+ * package state to installed.
+ */
+int
+xbps_configure_pkg(const char *pkgname, const char *version)
+{
+	const char *rootdir;
+	char *buf;
+	int rv = 0;
+	pkg_state_t state = 0;
+
+	assert(pkgname != NULL);
+	assert(version != NULL);
+	rootdir = xbps_get_rootdir();
+
+	if ((rv = xbps_get_pkg_state_installed(pkgname, &state)) != 0)
+		return rv;
+
+	/*
+	 * If package is already installed do nothing, and only
+	 * continue if it's unpacked.
+	 */
+	if (state == XBPS_PKG_STATE_INSTALLED)
+		return 0;
+	else if (state != XBPS_PKG_STATE_UNPACKED)
+		return EINVAL;
+
+	buf = xbps_xasprintf(".%s/metadata/%s/INSTALL",
+	    XBPS_META_PATH, pkgname);
+	if (buf == NULL)
+		return errno;
+
+	if (access(buf, R_OK) == 0) {
+		if (chdir(rootdir) == -1)
+			return errno;
+
+		if ((rv = xbps_file_chdir_exec(rootdir, buf, "post",
+		     pkgname, version, NULL)) != 0) {
+			free(buf);
+			printf("%s: post INSTALL action returned: %s\n",
+			    pkgname, strerror(errno));
+			return rv;
+		}
+	} else {
+		if (errno != ENOENT) {
+			free(buf);
+			return errno;
+		}
+	}
+	free(buf);
+
+	return xbps_set_pkg_state_installed(pkgname, XBPS_PKG_STATE_INSTALLED);
+}