[CIFS] clean up some hard to read ifdefs

Christoph had noticed too many ifdefs in the CIFS code making it
hard to read.  This patch removes about a quarter of them from
the C files in cifs by improving a few key ifdefs in the .h files.
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/cifs_debug.c

@@ -438,7 +438,7 @@ cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
 
 	return length;
 }
-#endif
+#endif /* STATS */
 
 static struct proc_dir_entry *proc_fs_cifs;
 read_proc_t cifs_txanchor_read;
@@ -481,7 +481,7 @@ cifs_proc_init(void)
 				cifs_stats_read, NULL);
 	if (pde)
 		pde->write_proc = cifs_stats_write;
-#endif
+#endif /* STATS */
 	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
 				cifsFYI_read, NULL);
 	if (pde)
@@ -917,4 +917,12 @@ security_flags_write(struct file *file, const char __user *buffer,
 	/* BB should we turn on MAY flags for other MUST options? */
 	return count;
 }
-#endif
+#else
+static inline void cifs_proc_init(void)
+{
+}
+
+static inline void cifs_proc_clean(void)
+{
+}
+#endif /* PROC_FS */

fs/cifs/cifs_debug.h

@@ -25,8 +25,11 @@
 
 void cifs_dump_mem(char *label, void *data, int length);
 #ifdef CONFIG_CIFS_DEBUG2
+#define DBG2 2
 void cifs_dump_detail(struct smb_hdr *);
 void cifs_dump_mids(struct TCP_Server_Info *);
+#else
+#define DBG2 0
 #endif
 extern int traceSMB;		/* flag which enables the function below */
 void dump_smb(struct smb_hdr *, int);

fs/cifs/cifsacl.c

@@ -215,9 +215,7 @@ static void access_flags_to_mode(__le32 ace_flags, int type, umode_t *pmode,
 
 	if (flags & GENERIC_ALL) {
 		*pmode |= (S_IRWXUGO & (*pbits_to_set));
-#ifdef CONFIG_CIFS_DEBUG2
-		cFYI(1, ("all perms"));
-#endif
+		cFYI(DBG2, ("all perms"));
 		return;
 	}
 	if ((flags & GENERIC_WRITE) ||
@@ -230,9 +228,7 @@ static void access_flags_to_mode(__le32 ace_flags, int type, umode_t *pmode,
 			((flags & FILE_EXEC_RIGHTS) == FILE_EXEC_RIGHTS))
 		*pmode |= (S_IXUGO & (*pbits_to_set));
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("access flags 0x%x mode now 0x%x", flags, *pmode));
-#endif
+	cFYI(DBG2, ("access flags 0x%x mode now 0x%x", flags, *pmode));
 	return;
 }
 
@@ -261,9 +257,7 @@ static void mode_to_access_flags(umode_t mode, umode_t bits_to_use,
 	if (mode & S_IXUGO)
 		*pace_flags |= SET_FILE_EXEC_RIGHTS;
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("mode: 0x%x, access flags now 0x%x", mode, *pace_flags));
-#endif
+	cFYI(DBG2, ("mode: 0x%x, access flags now 0x%x", mode, *pace_flags));
 	return;
 }
 
@@ -357,11 +351,9 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
 		return;
 	}
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("DACL revision %d size %d num aces %d",
+	cFYI(DBG2, ("DACL revision %d size %d num aces %d",
 		le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
 		le32_to_cpu(pdacl->num_aces)));
-#endif
 
 	/* reset rwx permissions for user/group/other.
 	   Also, if num_aces is 0 i.e. DACL has no ACEs,
@@ -494,13 +486,11 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
 				le32_to_cpu(pntsd->gsidoffset));
 	dacloffset = le32_to_cpu(pntsd->dacloffset);
 	dacl_ptr = (struct cifs_acl *)((char *)pntsd + dacloffset);
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
+	cFYI(DBG2, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
 		 "sacloffset 0x%x dacloffset 0x%x",
 		 pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
 		 le32_to_cpu(pntsd->gsidoffset),
 		 le32_to_cpu(pntsd->sacloffset), dacloffset));
-#endif
 /*	cifs_dump_mem("owner_sid: ", owner_sid_ptr, 64); */
 	rc = parse_sid(owner_sid_ptr, end_of_acl);
 	if (rc)
@@ -635,9 +625,7 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
 	struct super_block *sb;
 	struct cifs_sb_info *cifs_sb;
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("set ACL for %s from mode 0x%x", path, inode->i_mode));
-#endif
+	cFYI(DBG2, ("set ACL for %s from mode 0x%x", path, inode->i_mode));
 
 	if (!inode)
 		return (rc);
@@ -668,9 +656,7 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
 	}
 
 	rc = CIFSSMBSetCIFSACL(xid, cifs_sb->tcon, fid, pnntsd, acllen);
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("SetCIFSACL rc = %d", rc));
-#endif
+	cFYI(DBG2, ("SetCIFSACL rc = %d", rc));
 	if (unlock_file == TRUE)
 		atomic_dec(&open_file->wrtPending);
 	else
@@ -688,9 +674,7 @@ void acl_to_uid_mode(struct inode *inode, const char *path)
 	u32 acllen = 0;
 	int rc = 0;
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("converting ACL to mode for %s", path));
-#endif
+	cFYI(DBG2, ("converting ACL to mode for %s", path));
 	pntsd = get_cifs_acl(&acllen, inode, path);
 
 	/* if we can retrieve the ACL, now parse Access Control Entries, ACEs */
@@ -711,9 +695,7 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
 	struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
 	struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("set ACL from mode for %s", path));
-#endif
+	cFYI(DBG2, ("set ACL from mode for %s", path));
 
 	/* Get the security descriptor */
 	pntsd = get_cifs_acl(&acllen, inode, path);
@@ -735,16 +717,12 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
 
 		rc = build_sec_desc(pntsd, pnntsd, acllen, inode, nmode);
 
-#ifdef CONFIG_CIFS_DEBUG2
-		cFYI(1, ("build_sec_desc rc: %d", rc));
-#endif
+		cFYI(DBG2, ("build_sec_desc rc: %d", rc));
 
 		if (!rc) {
 			/* Set the security descriptor */
 			rc = set_cifs_acl(pnntsd, acllen, inode, path);
-#ifdef CONFIG_CIFS_DEBUG2
-			cFYI(1, ("set_cifs_acl rc: %d", rc));
-#endif
+			cFYI(DBG2, ("set_cifs_acl rc: %d", rc));
 		}
 
 		kfree(pnntsd);

fs/cifs/cifsfs.c

@@ -470,9 +470,7 @@ static void cifs_umount_begin(struct vfsmount *vfsmnt, int flags)
 	struct cifs_sb_info *cifs_sb;
 	struct cifsTconInfo *tcon;
 
-#ifdef CONFIG_CIFS_DFS_UPCALL
 	dfs_shrink_umount_helper(vfsmnt);
-#endif /* CONFIG CIFS_DFS_UPCALL */
 
 	if (!(flags & MNT_FORCE))
 		return;
@@ -991,9 +989,7 @@ static int __init
 init_cifs(void)
 {
 	int rc = 0;
-#ifdef CONFIG_PROC_FS
 	cifs_proc_init();
-#endif
 /*	INIT_LIST_HEAD(&GlobalServerList);*/	/* BB not implemented yet */
 	INIT_LIST_HEAD(&GlobalSMBSessionList);
 	INIT_LIST_HEAD(&GlobalTreeConnectionList);
@@ -1094,19 +1090,15 @@ init_cifs(void)
  out_destroy_inodecache:
 	cifs_destroy_inodecache();
  out_clean_proc:
-#ifdef CONFIG_PROC_FS
 	cifs_proc_clean();
-#endif
 	return rc;
 }
 
 static void __exit
 exit_cifs(void)
 {
-	cFYI(0, ("exit_cifs"));
-#ifdef CONFIG_PROC_FS
+	cFYI(DBG2, ("exit_cifs"));
 	cifs_proc_clean();
-#endif
 #ifdef CONFIG_CIFS_DFS_UPCALL
 	unregister_key_type(&key_type_dns_resolver);
 #endif

fs/cifs/cifsproto.h

@@ -102,9 +102,13 @@ extern int mode_to_acl(struct inode *inode, const char *path, __u64);
 extern int cifs_mount(struct super_block *, struct cifs_sb_info *, char *,
 			const char *);
 extern int cifs_umount(struct super_block *, struct cifs_sb_info *);
-#ifdef CONFIG_CIFS_DFS_UPCALL
+#ifdef CONFIG_CIFS_DFS
 extern void dfs_shrink_umount_helper(struct vfsmount *vfsmnt);
-#endif
+#else
+static inline void dfs_shrink_umount_helper(struct vfsmount *vfsmnt)
+{
+}
+#endif /* DFS_UPCALL */
 void cifs_proc_init(void);
 void cifs_proc_clean(void);
 

fs/cifs/cifssmb.c

@@ -602,7 +602,7 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
 	server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize),
 			(__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
 	server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
-	cFYI(0, ("Max buf = %d", ses->server->maxBuf));
+	cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf));
 	GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
 	server->capabilities = le32_to_cpu(pSMBr->Capabilities);
 	server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
@@ -1108,9 +1108,7 @@ CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags,
 	/* check to make sure response data is there */
 	if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) {
 		pRetData->Type = cpu_to_le32(-1); /* unknown */
-#ifdef CONFIG_CIFS_DEBUG2
-		cFYI(1, ("unknown type"));
-#endif
+		cFYI(DBG2, ("unknown type"));
 	} else {
 		if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP)
 					+ sizeof(FILE_UNIX_BASIC_INFO)) {

fs/cifs/connect.c

@@ -1753,9 +1753,8 @@ void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
 		if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) {
 			if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) {
 				CIFS_SB(sb)->rsize = 127 * 1024;
-#ifdef CONFIG_CIFS_DEBUG2
-				cFYI(1, ("larger reads not supported by srv"));
-#endif
+				cFYI(DBG2,
+					("larger reads not supported by srv"));
 			}
 		}
 
@@ -2227,9 +2226,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 
 		if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
 			cifs_sb->rsize = 1024 * 127;
-#ifdef CONFIG_CIFS_DEBUG2
-			cFYI(1, ("no very large read support, rsize now 127K"));
-#endif
+			cFYI(DBG2,
+				("no very large read support, rsize now 127K"));
 		}
 		if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
 			cifs_sb->wsize = min(cifs_sb->wsize,

fs/cifs/file.c

@@ -499,9 +499,8 @@ int cifs_close(struct inode *inode, struct file *file)
 					the struct would be in each open file,
 					but this should give enough time to
 					clear the socket */
-#ifdef CONFIG_CIFS_DEBUG2
-					cFYI(1, ("close delay, write pending"));
-#endif /* DEBUG2 */
+					cFYI(DBG2,
+						("close delay, write pending"));
 					msleep(timeout);
 					timeout *= 4;
 				}
@@ -1812,9 +1811,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 	pTcon = cifs_sb->tcon;
 
 	pagevec_init(&lru_pvec, 0);
-#ifdef CONFIG_CIFS_DEBUG2
-		cFYI(1, ("rpages: num pages %d", num_pages));
-#endif
+		cFYI(DBG2, ("rpages: num pages %d", num_pages));
 	for (i = 0; i < num_pages; ) {
 		unsigned contig_pages;
 		struct page *tmp_page;
@@ -1847,10 +1844,8 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 		/* Read size needs to be in multiples of one page */
 		read_size = min_t(const unsigned int, read_size,
 				  cifs_sb->rsize & PAGE_CACHE_MASK);
-#ifdef CONFIG_CIFS_DEBUG2
-		cFYI(1, ("rpages: read size 0x%x  contiguous pages %d",
+		cFYI(DBG2, ("rpages: read size 0x%x  contiguous pages %d",
 				read_size, contig_pages));
-#endif
 		rc = -EAGAIN;
 		while (rc == -EAGAIN) {
 			if ((open_file->invalidHandle) &&

fs/cifs/inode.c

@@ -837,9 +837,7 @@ static void posix_fill_in_inode(struct inode *tmp_inode,
 		cFYI(1, ("unknown inode type %d", type));
 	}
 
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("object type: %d", type));
-#endif
+	cFYI(DBG2, ("object type: %d", type));
 	tmp_inode->i_uid = le64_to_cpu(pData->Uid);
 	tmp_inode->i_gid = le64_to_cpu(pData->Gid);
 	tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);

fs/cifs/netmisc.c

@@ -150,9 +150,7 @@ static int canonicalize_unc(char *cp)
 		if (cp[i] == '\\')
 			break;
 		if (cp[i] == '/') {
-#ifdef CONFIG_CIFS_DEBUG2
-			cFYI(1, ("change slash to backslash in malformed UNC"));
-#endif
+			cFYI(DBG2, ("change slash to \\ in malformed UNC"));
 			cp[i] = '\\';
 			return 1;
 		}
@@ -178,9 +176,7 @@ cifs_inet_pton(int address_family, char *cp, void *dst)
 	} else if (address_family == AF_INET6) {
 		ret = in6_pton(cp, -1 /* len */, dst , '\\', NULL);
 	}
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("address conversion returned %d for %s", ret, cp));
-#endif
+	cFYI(DBG2, ("address conversion returned %d for %s", ret, cp));
 	if (ret > 0)
 		ret = 1;
 	return ret;

fs/cifs/readdir.c

@@ -50,6 +50,10 @@ static void dump_cifs_file_struct(struct file *file, char *label)
 			cFYI(1, ("empty dir"));
 	}
 }
+#else
+static inline void dump_cifs_file_struct(struct file *file, char *label)
+{
+}
 #endif /* DEBUG2 */
 
 /* Returns one if new inode created (which therefore needs to be hashed) */
@@ -660,9 +664,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
 	. and .. for the root of a drive and for those we need
 	to start two entries earlier */
 
-#ifdef CONFIG_CIFS_DEBUG2
 	dump_cifs_file_struct(file, "In fce ");
-#endif
 	if (((index_to_find < cifsFile->srch_inf.index_of_last_entry) &&
 	     is_dir_changed(file)) ||
 	   (index_to_find < first_entry_in_buffer)) {

fs/cifs/sess.c

@@ -417,10 +417,6 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
 
 		calc_lanman_hash(ses, lnm_session_key);
 		ses->flags |= CIFS_SES_LANMAN;
-/* #ifdef CONFIG_CIFS_DEBUG2
-		cifs_dump_mem("cryptkey: ",ses->server->cryptKey,
-			CIFS_SESS_KEY_SIZE);
-#endif */
 		memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
 		bcc_ptr += CIFS_SESS_KEY_SIZE;
 

fs/cifs/transport.c

@@ -437,9 +437,8 @@ SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses,
 	iov[0].iov_len = in_buf->smb_buf_length + 4;
 	flags |= CIFS_NO_RESP;
 	rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags);
-#ifdef CONFIG_CIFS_DEBUG2
-	cFYI(1, ("SendRcvNoR flags %d rc %d", flags, rc));
-#endif
+	cFYI(DBG2, ("SendRcvNoRsp flags %d rc %d", flags, rc));
+
 	return rc;
 }