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cifs: add "mfsymlinks" mount option

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This is the start for an implementation of "Minshall+French Symlinks"
(see http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks).

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Stefan Metzmacher
2010-07-30 14:56:00 +02:00
committed by Steve French
parent 1b12b9c15b
commit 736a332059
3 changed files with 18 additions and 0 deletions
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11
fs/cifs/connect.c
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@@ -100,6 +100,7 @@ struct smb_vol {
bool noautotune:1;
bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
bool fsc:1; /* enable fscache */
bool mfsymlinks:1; /* use Minshall+French Symlinks */
unsigned int rsize;
unsigned int wsize;
bool sockopt_tcp_nodelay:1;
@@ -1342,6 +1343,8 @@ cifs_parse_mount_options(char *options, const char *devname,
"/proc/fs/cifs/LookupCacheEnabled to 0\n");
} else if (strnicmp(data, "fsc", 3) == 0) {
vol->fsc = true;
} else if (strnicmp(data, "mfsymlinks", 10) == 0) {
vol->mfsymlinks = true;
} else
printk(KERN_WARNING "CIFS: Unknown mount option %s\n",
data);
@@ -2554,6 +2557,14 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info,
cFYI(1, "mounting share using direct i/o");
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
}
if (pvolume_info->mfsymlinks) {
if (pvolume_info->sfu_emul) {
cERROR(1, "mount option mfsymlinks ignored if sfu "
"mount option is used");
} else {
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS;
}
}
if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm))
cERROR(1, "mount option dynperm ignored if cifsacl "