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Commit bc8ebdc4 authored by Nakajima Akira's avatar Nakajima Akira Committed by Steve French
Browse files

Fix that several functions handle incorrect value of mapchars 



Cifs client has problem with reserved chars filename.

[BUG1] : several functions handle incorrect value of mapchars
-	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+	cifs_remap(cifs_sb));

[BUG2] : forget to convert reserved chars when creating SymbolicLink.
-	CIFSUnixCreateSymLink() calls cifs_strtoUTF16
+	CIFSUnixCreateSymLink() calls cifsConvertToUTF16() with remap

[BUG3] : forget to convert reserved chars when getting SymbolicLink.
-	CIFSSMBUnixQuerySymLink() calls cifs_strtoUTF16
+	CIFSSMBUnixQuerySymLink() calls cifsConvertToUTF16() with remap

[BUG4] : /proc/mounts don't show "mapposix" when using mapposix mount option
+	    cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR)
+ 		seq_puts(s, ",mapposix");

Reported-by: default avatar <t.wede@kw-reneg.de>
Reported-by: default avatarNakajima Akira <nakajima.akira@nttcom.co.jp>
Signed-off-by: default avatarNakajima Akira <nakajima.akira@nttcom.co.jp>
Signed-off-by: default avatarCarl Schaefer <schaefer@trilug.org>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent f5d0684e

fs/cifs/cifs_dfs_ref.c

+2 −1
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include "cifsfs.h"

#include "dns_resolve.h"

#include "cifs_debug.h"

#include "cifs_unicode.h"



static LIST_HEAD(cifs_dfs_automount_list);
@@ -312,7 +313,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt) 
	xid = get_xid();

	rc = get_dfs_path(xid, ses, full_path + 1, cifs_sb->local_nls,

		&num_referrals, &referrals,

		cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);

		cifs_remap(cifs_sb));

	free_xid(xid);



	cifs_put_tlink(tlink);

fs/cifs/cifsfs.c

+2 −0
Original line number Diff line number Diff line
@@ -469,6 +469,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root) 
		seq_puts(s, ",nouser_xattr");

	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)

		seq_puts(s, ",mapchars");

	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SFM_CHR)

		seq_puts(s, ",mapposix");

	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)

		seq_puts(s, ",sfu");

	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)

fs/cifs/cifsproto.h

+2 −2
Original line number Diff line number Diff line
@@ -361,11 +361,11 @@ extern int CIFSUnixCreateHardLink(const unsigned int xid, 
extern int CIFSUnixCreateSymLink(const unsigned int xid,

			struct cifs_tcon *tcon,

			const char *fromName, const char *toName,

			const struct nls_table *nls_codepage);

			const struct nls_table *nls_codepage, int remap);

extern int CIFSSMBUnixQuerySymLink(const unsigned int xid,

			struct cifs_tcon *tcon,

			const unsigned char *searchName, char **syminfo,

			const struct nls_table *nls_codepage);

			const struct nls_table *nls_codepage, int remap);

extern int CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,

			       __u16 fid, char **symlinkinfo,

			       const struct nls_table *nls_codepage);

fs/cifs/cifssmb.c

+11 −10
Original line number Diff line number Diff line
@@ -2784,7 +2784,7 @@ CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, 
int

CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon,

		      const char *fromName, const char *toName,

		      const struct nls_table *nls_codepage)

		      const struct nls_table *nls_codepage, int remap)

{

	TRANSACTION2_SPI_REQ *pSMB = NULL;

	TRANSACTION2_SPI_RSP *pSMBr = NULL;
@@ -2804,9 +2804,9 @@ CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, 


	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {

		name_len =

		    cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName,

		    cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName,

				/* find define for this maxpathcomponent */

				    PATH_MAX, nls_codepage);

					PATH_MAX, nls_codepage, remap);

		name_len++;	/* trailing null */

		name_len *= 2;
@@ -2828,9 +2828,9 @@ CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, 
	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;

	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {

		name_len_target =

		    cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX

		    cifsConvertToUTF16((__le16 *) data_offset, toName,

				/* find define for this maxpathcomponent */

				    , nls_codepage);

					PATH_MAX, nls_codepage, remap);

		name_len_target++;	/* trailing null */

		name_len_target *= 2;

	} else {	/* BB improve the check for buffer overruns BB */
@@ -3034,7 +3034,7 @@ CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, 
int

CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,

			const unsigned char *searchName, char **symlinkinfo,

			const struct nls_table *nls_codepage)

			const struct nls_table *nls_codepage, int remap)

{

/* SMB_QUERY_FILE_UNIX_LINK */

	TRANSACTION2_QPI_REQ *pSMB = NULL;
@@ -3055,8 +3055,9 @@ CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, 


	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {

		name_len =

			cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName,

					PATH_MAX, nls_codepage);

			cifsConvertToUTF16((__le16 *) pSMB->FileName,

					   searchName, PATH_MAX, nls_codepage,

					   remap);

		name_len++;	/* trailing null */

		name_len *= 2;

	} else {	/* BB improve the check for buffer overruns BB */

fs/cifs/dir.c

+1 −2
Original line number Diff line number Diff line
@@ -620,8 +620,7 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, 
		}

		rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,

					    cifs_sb->local_nls,

					    cifs_sb->mnt_cifs_flags &

						CIFS_MOUNT_MAP_SPECIAL_CHR);

					    cifs_remap(cifs_sb));

		if (rc)

			goto mknod_out;