From 8d93fd151b155519e32c12bf3e01bb7c7761375c Mon Sep 17 00:00:00 2001
From: Tony Butler <spudz76@gmail.com>
Date: Sat, 27 Feb 2010 08:22:13 +0000
Subject: [PATCH] =?utf8?q?[patchteam]=20sysfsutils:=20separate=20libsysfs?=
 =?utf8?q?=20and=20sysfsutils=20and=20move=20to=20libs,=20add=20patch=20-?=
 =?utf8?q?=20thanks=20Rapha=C3=ABl?=
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SVN-Revision: 19881
---
 {utils => libs}/sysfsutils/Makefile           | 35 ++++++++++--
 .../patches/200-mnt_path_check.patch          | 55 +++++++++++++++++++
 2 files changed, 84 insertions(+), 6 deletions(-)
 rename {utils => libs}/sysfsutils/Makefile (55%)
 create mode 100644 libs/sysfsutils/patches/200-mnt_path_check.patch

diff --git a/utils/sysfsutils/Makefile b/libs/sysfsutils/Makefile
similarity index 55%
rename from utils/sysfsutils/Makefile
rename to libs/sysfsutils/Makefile
index e9807b09c5..70d3388a5c 100644
--- a/utils/sysfsutils/Makefile
+++ b/libs/sysfsutils/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=sysfsutils
 PKG_VERSION:=2.1.0
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@SF/linux-diag
@@ -20,27 +20,50 @@ PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
+define Package/libsysfs
+  SECTION:=libs
+  CATEGORY:=Libraries
+  SUBMENU:=Filesystem
+  DEPENDS:=@LINUX_2_6
+  TITLE:=Sysfs library
+  URL:=http://linux-diag.sourceforge.net/Sysfsutils.html
+endef
+
 define Package/sysfsutils
   SECTION:=utils
   CATEGORY:=Utilities
   SUBMENU:=Filesystem
-  DEPENDS:=@LINUX_2_6
-  TITLE:=sysfs Utilities
+  DEPENDS:=@LINUX_2_6 +libsysfs
+  TITLE:=System Utilities Based on Sysfs
   URL:=http://linux-diag.sourceforge.net/Sysfsutils.html
 endef
 
+define Package/libsysfs/description
+The library's purpose is to provide a consistant and stable interface for
+querying system device information exposed through sysfs.
+endef
+
+define Package/sysfsutils/description
+A utility built upon libsysfs that lists devices by bus, class, and topology.
+endef
+
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/include
 	$(CP) $(PKG_INSTALL_DIR)/usr/include/sysfs $(1)/usr/include/
+
 	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsysfs.{a,so*} $(1)/usr/lib/
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsysfs.{a,so*,la} $(1)/usr/lib/
+endef
+
+define Package/libsysfs/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsysfs.so* $(1)/usr/lib/
 endef
 
 define Package/sysfsutils/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(CP) $(PKG_INSTALL_DIR)/usr/bin/systool $(1)/usr/bin/
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libsysfs.so.* $(1)/usr/lib/
 endef
 
+$(eval $(call BuildPackage,libsysfs))
 $(eval $(call BuildPackage,sysfsutils))
diff --git a/libs/sysfsutils/patches/200-mnt_path_check.patch b/libs/sysfsutils/patches/200-mnt_path_check.patch
new file mode 100644
index 0000000000..8710578c5b
--- /dev/null
+++ b/libs/sysfsutils/patches/200-mnt_path_check.patch
@@ -0,0 +1,55 @@
+--- a/lib/sysfs_utils.c
++++ b/lib/sysfs_utils.c
+@@ -22,6 +22,7 @@
+  */
+ #include "libsysfs.h"
+ #include "sysfs.h"
++#include <mntent.h>
+ 
+ /**
+  * sysfs_remove_trailing_slash: Removes any trailing '/' in the given path
+@@ -53,6 +54,9 @@ int sysfs_get_mnt_path(char *mnt_path, s
+ {
+ 	static char sysfs_path[SYSFS_PATH_MAX] = "";
+ 	const char *sysfs_path_env;
++	FILE *mnt;
++	struct mntent *mntent;
++	int ret;
+ 
+ 	if (len == 0 || mnt_path == NULL)
+ 		return -1;
+@@ -64,12 +68,31 @@ int sysfs_get_mnt_path(char *mnt_path, s
+ 		if (sysfs_path_env != NULL) {
+ 			safestrcpymax(mnt_path, sysfs_path_env, len);
+ 			sysfs_remove_trailing_slash(mnt_path);
+-			return 0;
++		} else {
++			safestrcpymax(mnt_path, SYSFS_MNT_PATH, len);
+ 		}
+-		safestrcpymax(mnt_path, SYSFS_MNT_PATH, len);
+ 	}
+ 
+-	return 0;
++	/* check that mount point is indeed mounted */
++	ret = -1;
++	if ((mnt = setmntent(SYSFS_PROC_MNTS, "r")) == NULL) {
++		dprintf("Error getting mount information\n");
++		return -1;
++	}
++	while ((mntent = getmntent(mnt)) != NULL) {
++		if (strcmp(mntent->mnt_type, SYSFS_FSTYPE_NAME) == 0 &&
++			strcmp(mntent->mnt_dir, mnt_path) == 0) {
++			ret = 0;
++			break;
++		}
++	}
++	
++	endmntent(mnt);
++
++	if (ret < 0)
++		errno = ENOENT;
++
++	return ret;
+ }
+ 
+ /**
-- 
2.30.2