File libmount-ignore-tailing-slash-in-netfs-source-p... of Package util-linux

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File libmount-ignore-tailing-slash-in-netfs-source-paths.patch of Package util-linux (Revision c5ce25b1bd9c3a2c97f33a303e39a5a7)

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From b106d052383083b80c0dc41f1555d2661db00374 Mon Sep 17 00:00:00 2001
From: Petr Uzel <petr.uzel@suse.cz>
Date: Tue, 8 Nov 2011 16:25:01 +0100
Subject: [PATCH] libmount: ignore tailing slash in netfs source paths

Addresses: https://bugzilla.novell.com/show_bug.cgi?id=728480
Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 include/strutils.h       |    2 ++
 lib/strutils.c           |   32 ++++++++++++++++++++++++++++++++
 libmount/src/fs.c        |    5 +++--
 libmount/src/tab.c       |   17 ++++++++++++-----
 libmount/src/tab_parse.c |   11 +++++++++--
 mount/fstab.c            |    3 ++-
 6 files changed, 60 insertions(+), 10 deletions(-)

Index: util-linux-2.20.1/include/strutils.h
===================================================================
--- util-linux-2.20.1.orig/include/strutils.h
+++ util-linux-2.20.1/include/strutils.h
@@ -44,4 +44,6 @@ extern int string_to_idarray(const char
 extern int string_to_bitarray(const char *list, char *ary,
 			    int (*name2bit)(const char *, size_t));
 
+extern int streq_except_trailing_slash(const char *s1, const char *s2);
+
 #endif
Index: util-linux-2.20.1/lib/strutils.c
===================================================================
--- util-linux-2.20.1.orig/lib/strutils.c
+++ util-linux-2.20.1/lib/strutils.c
@@ -437,6 +437,40 @@ int string_to_bitarray(const char *list,
 	return 0;
 }
 
+
+/*
+ * Compare two strings for equality, ignoring at most one trailing
+ * slash.
+ */
+int streq_except_trailing_slash(const char *s1, const char *s2)
+{
+	int equal;
+
+	if (!s1 && !s2)
+		return 1;
+	if (!s1 || !s2)
+		return 0;
+
+	equal = !strcmp(s1, s2);
+
+	if (!equal) {
+		size_t len1 = strlen(s1);
+		size_t len2 = strlen(s2);
+
+		if (len1 && *(s1 + len1 - 1) == '/')
+			len1--;
+		if (len2 && *(s2 + len2 - 1) == '/')
+			len2--;
+		if (len1 != len2)
+			return 0;
+
+		equal = !strncmp(s1, s2, len1);
+	}
+
+	return equal;
+}
+ 
+
 #ifdef TEST_PROGRAM
 
 int main(int argc, char *argv[])
Index: util-linux-2.20.1/libmount/src/fs.c
===================================================================
--- util-linux-2.20.1.orig/libmount/src/fs.c
+++ util-linux-2.20.1/libmount/src/fs.c
@@ -16,6 +16,7 @@
 #include <stddef.h>
 
 #include "mountP.h"
+#include "strutils.h"
 
 /**
  * mnt_new_fs:
@@ -1142,7 +1143,7 @@ int mnt_fs_match_source(struct libmnt_fs
 		return 0;
 
 	/* 1) native paths/tags */
-	if (!strcmp(source, fs->source))
+	if (streq_except_trailing_slash(source, fs->source))
 		return 1;
 
 	if (!cache)
@@ -1156,7 +1157,7 @@ int mnt_fs_match_source(struct libmnt_fs
 
 	/* 2) canonicalized and native */
 	src = mnt_fs_get_srcpath(fs);
-	if (src && !strcmp(cn, src))
+	if (src && streq_except_trailing_slash(cn, src))
 		return 1;
 
 	/* 3) canonicalized and canonicalized */
Index: util-linux-2.20.1/libmount/src/tab.c
===================================================================
--- util-linux-2.20.1.orig/libmount/src/tab.c
+++ util-linux-2.20.1/libmount/src/tab.c
@@ -44,6 +44,7 @@
 #include <blkid.h>
 
 #include "mountP.h"
+#include "strutils.h"
 
 /**
  * mnt_new_table:
@@ -506,7 +507,7 @@ struct libmnt_fs *mnt_table_find_srcpath
 
 		if (path == NULL && src == NULL)
 			return fs;			/* source is "none" */
-		if (p && strcmp(p, path) == 0)
+		if (path && p && streq_except_trailing_slash(p, path))
 			return fs;
 		if (!p && src)
 			ntags++;			/* mnt_fs_get_srcpath() returs nothing, it's TAG */
@@ -520,7 +521,7 @@ struct libmnt_fs *mnt_table_find_srcpath
 		mnt_reset_iter(&itr, direction);
 		while(mnt_table_next_fs(tb, &itr, &fs) == 0) {
 			p = mnt_fs_get_srcpath(fs);
-			if (p && strcmp(p, cn) == 0)
+			if (p && streq_except_trailing_slash(p, cn))
 				return fs;
 		}
 	}
@@ -551,7 +552,7 @@ struct libmnt_fs *mnt_table_find_srcpath
 				 if (mnt_fs_get_tag(fs, &t, &v))
 					 continue;
 				 x = mnt_resolve_tag(t, v, tb->cache);
-				 if (x && !strcmp(x, cn))
+				 if (x && streq_except_trailing_slash(x, cn))
 					 return fs;
 			 }
 		}
@@ -566,7 +567,7 @@ struct libmnt_fs *mnt_table_find_srcpath
 			p = mnt_fs_get_srcpath(fs);
 			if (p)
 				p = mnt_resolve_path(p, tb->cache);
-			if (p && strcmp(cn, p) == 0)
+			if (p && streq_except_trailing_slash(cn, p))
 				return fs;
 		}
 	}
@@ -856,8 +857,14 @@ int mnt_table_is_fs_mounted(struct libmn
 				   *t = mnt_fs_get_target(fs),
 				   *r = mnt_fs_get_root(fs);
 
-			if (s && t && r && !strcmp(t, tgt) &&
-			    !strcmp(s, src) && !strcmp(r, root))
+			/*
+			 * Note that kernel can add tailing slash to the
+			 * network filesystem source paths.
+			 */
+ 			if (t && s && r &&
+			    strcmp(t, tgt) == 0 &&
+			    streq_except_trailing_slash(s, src) &&
+			    strcmp(r, root) == 0)
 				break;
 		}
 		if (fs)
Index: util-linux-2.20.1/libmount/src/tab_parse.c
===================================================================
--- util-linux-2.20.1.orig/libmount/src/tab_parse.c
+++ util-linux-2.20.1/libmount/src/tab_parse.c
@@ -14,6 +14,7 @@
 #include "mangle.h"
 #include "mountP.h"
 #include "pathnames.h"
+#include "strutils.h"
 
 static inline char *skip_spaces(char *s)
 {
@@ -654,8 +655,14 @@ static struct libmnt_fs *mnt_table_merge
 		if (fs->flags & MNT_FS_MERGED)
 			continue;
 
-		if (s && t && r && !strcmp(t, target) &&
-		    !strcmp(s, src) && !strcmp(r, root))
+		/*
+		 * Note that kernel can add tailing slash to the network
+		 * filesystem source path
+		 */
+		if (s && t && r &&
+		    strcmp(t, target) == 0 &&
+		    streq_except_trailing_slash(s, src) &&
+		    strcmp(r, root) == 0)
 			break;
 	}
 
Index: util-linux-2.20.1/mount/fstab.c
===================================================================
--- util-linux-2.20.1.orig/mount/fstab.c
+++ util-linux-2.20.1/mount/fstab.c
@@ -20,6 +20,7 @@
 #include "pathnames.h"
 #include "nls.h"
 #include "usleep.h"
+#include "strutils.h"
 
 #define streq(s, t)	(strcmp ((s), (t)) == 0)
 
@@ -436,7 +437,7 @@ getfs_by_devdir (const char *dev, const
 				ok = has_uuid(dev, fs + 5);
 			} else {
 				fs = canonicalize_spec(mc->m.mnt_fsname);
-				ok = streq(fs, dev);
+				ok = streq_except_trailing_slash(fs, dev);
 				my_free(fs);
 			}
 		}

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File libmount-ignore-tailing-slash-in-netfs-source-paths.patch of Package util-linux (Revision c5ce25b1bd9c3a2c97f33a303e39a5a7)

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