diff options
| author | Jeff Layton <jlayton@redhat.com> | 2008-12-05 20:41:21 -0500 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2008-12-26 02:29:11 +0000 |
| commit | 00e485b0198ea4f509341373f1d9adb0a5977a2f (patch) | |
| tree | 2f8a50be11f0551fe8ad2af33a00577621398027 /fs/cifs | |
| parent | 4e53a3fb98d3d5c2941d2e7199dab317a9d4ead3 (diff) | |
| download | linux-00e485b0198ea4f509341373f1d9adb0a5977a2f.tar.bz2 | |
cifs: store password in tcon
cifs: store password in tcon
Each tcon has its own password for share-level security. Store it in
the tcon and wipe it clean and free it when freeing the tcon. When
doing the tree connect with share-level security, use the tcon password
instead of the session password.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifsglob.h | 1 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 25 | ||||
| -rw-r--r-- | fs/cifs/misc.c | 4 |
3 files changed, 23 insertions, 7 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 0fb934d3623b..94c1ca0ec953 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -242,6 +242,7 @@ struct cifsTconInfo { struct cifsSesInfo *ses; /* pointer to session associated with */ char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ char *nativeFileSystem; + char *password; /* for share-level security */ __u16 tid; /* The 2 byte tree id */ __u16 Flags; /* optional support bits */ enum statusEnum tidStatus; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 3a84a375cb6f..3caadf12d76d 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2282,9 +2282,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, /* volume_info->password freed at unmount */ if (volume_info->password) { - pSesInfo->password = volume_info->password; - /* set to NULL to prevent freeing on exit */ - volume_info->password = NULL; + pSesInfo->password = kstrdup(volume_info->password, + GFP_KERNEL); + if (!pSesInfo->password) { + rc = -ENOMEM; + goto mount_fail_check; + } } if (volume_info->username) strncpy(pSesInfo->userName, volume_info->username, @@ -2324,7 +2327,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, rc = -ENOMEM; goto mount_fail_check; } + tcon->ses = pSesInfo; + if (volume_info->password) { + tcon->password = kstrdup(volume_info->password, + GFP_KERNEL); + if (!tcon->password) { + rc = -ENOMEM; + goto mount_fail_check; + } + } /* check for null share name ie connect to dfs root */ if ((strchr(volume_info->UNC + 3, '\\') == NULL) @@ -3532,15 +3544,14 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, NTLMv2 password here) */ #ifdef CONFIG_CIFS_WEAK_PW_HASH if ((extended_security & CIFSSEC_MAY_LANMAN) && - (ses->server->secType == LANMAN)) - calc_lanman_hash(ses->password, ses->server->cryptKey, + (ses->server->secType == LANMAN)) + calc_lanman_hash(tcon->password, ses->server->cryptKey, ses->server->secMode & SECMODE_PW_ENCRYPT ? true : false, bcc_ptr); else #endif /* CIFS_WEAK_PW_HASH */ - SMBNTencrypt(ses->password, - ses->server->cryptKey, + SMBNTencrypt(tcon->password, ses->server->cryptKey, bcc_ptr); bcc_ptr += CIFS_SESS_KEY_SIZE; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 7c3f4b9230d7..a0513605d7e3 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -132,6 +132,10 @@ tconInfoFree(struct cifsTconInfo *buf_to_free) } atomic_dec(&tconInfoAllocCount); kfree(buf_to_free->nativeFileSystem); + if (buf_to_free->password) { + memset(buf_to_free->password, 0, strlen(buf_to_free->password)); + kfree(buf_to_free->password); + } kfree(buf_to_free); } |