File mountd-fix-bug-affecting-exports-of-dirs-with-6... of Package nfs-utils

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File mountd-fix-bug-affecting-exports-of-dirs-with-64bit-.patch of Package nfs-utils

Git-commit: b3a156fe96c6645ca5dbf4b75e9cff710218d920
From: Neil Brown <neilb@suse.de>
Date: Mon, 21 Oct 2013 16:27:32 +1100
Subject: [PATCH 1/2] mountd: fix bug affecting exports of dirs with 64bit
 inode number.
References: bnc:841971

parse_fsid is currently truncating all inode numbers to
32bits, and assumes that 'int' is 32 bits (which it probably is,
but we shouldn't assume).

So make the 'inode' field in 'struct parsed_fsid' a 64 bit field.
and only memcpy into variables or fields that have been declared
to a specific bit size.

Signed-off-by: NeilBrown <neilb@suse.de>
---
 utils/mountd/cache.c |   25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

--- nfs-utils-1.2.8.orig/utils/mountd/cache.c
+++ nfs-utils-1.2.8/utils/mountd/cache.c
@@ -388,10 +388,10 @@ struct parsed_fsid {
 	int fsidtype;
 	/* We could use a union for this, but it would be more
 	 * complicated; why bother? */
-	unsigned int inode;
+	uint64_t inode;
 	unsigned int minor;
 	unsigned int major;
-	unsigned int fsidnum;
+	uint32_t fsidnum;
 	size_t uuidlen;
 	char *fhuuid;
 };
@@ -399,8 +399,8 @@ struct parsed_fsid {
 static int parse_fsid(int fsidtype, int fsidlen, char *fsid,
 		struct parsed_fsid *parsed)
 {
-	unsigned int dev;
-	unsigned long long inode64;
+	uint32_t dev;
+	uint32_t inode32;
 
 	memset(parsed, 0, sizeof(*parsed));
 	parsed->fsidtype = fsidtype;
@@ -409,7 +409,8 @@ static int parse_fsid(int fsidtype, int
 		if (fsidlen != 8)
 			return -1;
 		memcpy(&dev, fsid, 4);
-		memcpy(&parsed->inode, fsid+4, 4);
+		memcpy(&inode32, fsid+4, 4);
+		parsed->inode = inode32;
 		parsed->major = ntohl(dev)>>16;
 		parsed->minor = ntohl(dev) & 0xFFFF;
 		break;
@@ -420,7 +421,7 @@ static int parse_fsid(int fsidtype, int
 		memcpy(&parsed->fsidnum, fsid, 4);
 		break;
 
-	case FSID_MAJOR_MINOR: /* 12 bytes: 4 major, 4 minor, 4 inode 
+	case FSID_MAJOR_MINOR: /* 12 bytes: 4 major, 4 minor, 4 inode
 		 * This format is never actually used but was
 		 * an historical accident
 		 */
@@ -430,7 +431,8 @@ static int parse_fsid(int fsidtype, int
 		parsed->major = ntohl(dev);
 		memcpy(&dev, fsid+4, 4);
 		parsed->minor = ntohl(dev);
-		memcpy(&parsed->inode, fsid+8, 4);
+		memcpy(&inode32, fsid+8, 4);
+		parsed->inode = inode32;
 		break;
 
 	case FSID_ENCODE_DEV: /* 8 bytes: 4 byte packed device number, 4 inode */
@@ -440,7 +442,8 @@ static int parse_fsid(int fsidtype, int
 		if (fsidlen != 8)
 			return -1;
 		memcpy(&dev, fsid, 4);
-		memcpy(&parsed->inode, fsid+4, 4);
+		memcpy(&inode32, fsid+4, 4);
+		parsed->inode = inode32;
 		parsed->major = (dev & 0xfff00) >> 8;
 		parsed->minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
 		break;
@@ -448,7 +451,8 @@ static int parse_fsid(int fsidtype, int
 	case FSID_UUID4_INUM: /* 4 byte inode number and 4 byte uuid */
 		if (fsidlen != 8)
 			return -1;
-		memcpy(&parsed->inode, fsid, 4);
+		memcpy(&inode32, fsid, 4);
+		parsed->inode = inode32;
 		parsed->uuidlen = 4;
 		parsed->fhuuid = fsid+4;
 		break;
@@ -467,8 +471,7 @@ static int parse_fsid(int fsidtype, int
 	case FSID_UUID16_INUM: /* 8 byte inode number and 16 byte uuid */
 		if (fsidlen != 24)
 			return -1;
-		memcpy(&inode64, fsid, 8);
-		parsed->inode = inode64;
+		memcpy(&parsed->inode, fsid, 8);
 		parsed->uuidlen = 16;
 		parsed->fhuuid = fsid+8;
 		break;

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