[CIFS] Add compat with SFU (part 1)
This should help the case of creating fifos and other special files to
servers which do not support the Unix extensions.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Thanks to Martin Koeppe for his suggestions and good analysis
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 5dc5fe6..6b93587 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -25,6 +25,7 @@
#define CIFS_MOUNT_NO_XATTR 0x10 /* if set - disable xattr support */
#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames */
#define CIFS_MOUNT_POSIX_PATHS 0x40 /* Negotiate posix pathnames if possible. */
+#define CIFS_MOUNT_UNX_EMUL 0x80 /* Network compat with SFUnix emulation */
struct cifs_sb_info {
struct cifsTconInfo *tcon; /* primary mount */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index f6d2a79..36f7859 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -75,6 +75,7 @@
unsigned direct_io:1;
unsigned remap:1; /* set to remap seven reserved chars in filenames */
unsigned posix_paths:1; /* unset to not ask for posix pathnames. */
+ unsigned sfu_emul:1;
unsigned int rsize;
unsigned int wsize;
unsigned int sockopt;
@@ -1027,6 +1028,10 @@
vol->remap = 1;
} else if (strnicmp(data, "nomapchars", 10) == 0) {
vol->remap = 0;
+ } else if (strnicmp(data, "sfu", 3) == 0) {
+ vol->sfu_emul = 1;
+ } else if (strnicmp(data, "nosfu", 5) == 0) {
+ vol->sfu_emul = 0;
} else if (strnicmp(data, "posixpaths", 10) == 0) {
vol->posix_paths = 1;
} else if (strnicmp(data, "noposixpaths", 12) == 0) {
@@ -1687,6 +1692,8 @@
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
if(volume_info.no_xattr)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
+ if(volume_info.sfu_emul)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
if(volume_info.direct_io) {
cERROR(1,("mounting share using direct i/o"));
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 9360d8f..0d5e27f 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -209,7 +209,7 @@
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
else {
- /* BB implement via Windows security descriptors */
+ /* BB implement mode setting via Windows security descriptors */
/* eg CIFSSMBWinSetPerms(xid,pTcon,full_path,mode,-1,-1,local_nls);*/
/* could set r/o dos attribute if mode & 0222 == 0 */
}
@@ -326,6 +326,16 @@
if(rc == 0)
d_instantiate(direntry, newinode);
}
+ } else {
+ if((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
+ (special_file(mode))) {
+
+ cFYI(1,("sfu compat create special file"));
+ /* Attributes = cpu_to_le32(ATTR_SYSTEM);
+ rc = CIFSSMBOpen(xid, pTcon, full_path, disposition, ...); */
+
+ /* add code here to set EAs */
+ }
}
kfree(full_path);