From: David Quigley Subject: [PATCH 07/13] NFSv4: Introduce new label structure Date: Mon, 12 Nov 2012 01:15:41 -0500 Message-ID: <1352700947-3915-8-git-send-email-dpquigl@davequigley.com> References: <1352700947-3915-1-git-send-email-dpquigl@davequigley.com> Cc: linux-nfs@vger.kernel.org, selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org, David Quigley , "Matthew N. Dodd" , Miguel Rodel Felipe , Phua Eu Gene , Khin Mi Mi Aung To: bfields@fieldses.org, trond.myklebust@netapp.com, sds@tycho.nsa.gov Return-path: In-Reply-To: <1352700947-3915-1-git-send-email-dpquigl@davequigley.com> Sender: owner-selinux@tycho.nsa.gov List-ID: From: David Quigley In order to mimic the way that NFSv4 ACLs are implemented we have created a structure to be used to pass label data up and down the call chain. This patch adds the new structure and new members to the required NFSv4 call structures. Signed-off-by: Matthew N. Dodd Signed-off-by: Miguel Rodel Felipe Signed-off-by: Phua Eu Gene Signed-off-by: Khin Mi Mi Aung Signed-off-by: David Quigley --- fs/nfs/inode.c | 40 ++++++++++++++++++++++++++++++++++++++++ fs/nfsd/xdr4.h | 3 +++ include/linux/nfs4.h | 8 ++++++++ include/linux/nfs_fs.h | 14 ++++++++++++++ include/linux/nfs_xdr.h | 20 ++++++++++++++++++++ 5 files changed, 85 insertions(+) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 5c7325c..0963ad9 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -246,6 +246,46 @@ nfs_init_locked(struct inode *inode, void *opaque) return 0; } +#ifdef CONFIG_NFS_V4_SECURITY_LABEL +struct nfs4_label *nfs4_label_alloc(gfp_t flags) +{ + struct nfs4_label *label = NULL; + + label = kzalloc(sizeof(struct nfs4_label) + NFS4_MAXLABELLEN, flags); + if (label == NULL) + return NULL; + + label->label = (void *)(label + 1); + label->len = NFS4_MAXLABELLEN; + /* 0 is the null format meaning that the data is not to be translated */ + label->lfs = 0; + label->pi = 0; + return label; +} +EXPORT_SYMBOL_GPL(nfs4_label_alloc); + +void nfs4_label_init(struct nfs4_label *label) +{ + if (label && label->label) { + *(unsigned char *)label->label = 0; + label->len = NFS4_MAXLABELLEN; + /* 0 is the null format meaning that the data is not + to be translated */ + label->lfs = 0; + label->pi = 0; + } + return; +} +EXPORT_SYMBOL_GPL(nfs4_label_init); + +void nfs4_label_free(struct nfs4_label *label) +{ + kfree(label); + return; +} +EXPORT_SYMBOL_GPL(nfs4_label_free); +#endif + /* * This is our front-end to iget that looks up inodes by file handle * instead of inode number. diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index acd127d..ca8f30b 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -118,6 +118,7 @@ struct nfsd4_create { struct iattr cr_iattr; /* request */ struct nfsd4_change_info cr_cinfo; /* response */ struct nfs4_acl *cr_acl; + struct nfs4_label *cr_label; }; #define cr_linklen u.link.namelen #define cr_linkname u.link.name @@ -246,6 +247,7 @@ struct nfsd4_open { struct nfs4_file *op_file; /* used during processing */ struct nfs4_ol_stateid *op_stp; /* used during processing */ struct nfs4_acl *op_acl; + struct nfs4_label *op_label; }; #define op_iattr iattr @@ -330,6 +332,7 @@ struct nfsd4_setattr { u32 sa_bmval[3]; /* request */ struct iattr sa_iattr; /* request */ struct nfs4_acl *sa_acl; + struct nfs4_label *sa_label; }; struct nfsd4_setclientid { diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index f9235b4..862471f 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -28,6 +28,14 @@ struct nfs4_acl { struct nfs4_ace aces[0]; }; +struct nfs4_label { + uint32_t lfs; + uint32_t pi; + u32 len; + void *label; +}; + + typedef struct { char data[NFS4_VERIFIER_SIZE]; } nfs4_verifier; struct nfs_stateid4 { diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 1cc2568..37a862c 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -489,6 +489,20 @@ extern int nfs_mountpoint_expiry_timeout; extern void nfs_release_automount_timer(void); /* + * linux/fs/nfs/nfs4proc.c + */ + +#ifdef CONFIG_NFS_V4_SECURITY_LABEL +extern struct nfs4_label *nfs4_label_alloc(gfp_t flags); +extern void nfs4_label_init(struct nfs4_label *); +extern void nfs4_label_free(struct nfs4_label *); +#else +static inline struct nfs4_label *nfs4_label_alloc(gfp_t flags) { return NULL; } +static inline void nfs4_label_init(struct nfs4_label *) {} +static inline void nfs4_label_free(struct nfs4_label *label) {} +#endif + +/* * linux/fs/nfs/unlink.c */ extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index a0669d3..7e9347a 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -352,6 +352,7 @@ struct nfs_openargs { const u32 * bitmask; const u32 * open_bitmap; __u32 claim; + const struct nfs4_label *label; struct nfs4_sequence_args seq_args; }; @@ -361,6 +362,7 @@ struct nfs_openres { struct nfs4_change_info cinfo; __u32 rflags; struct nfs_fattr * f_attr; + struct nfs4_label *f_label; struct nfs_seqid * seqid; const struct nfs_server *server; fmode_t delegation_type; @@ -405,6 +407,7 @@ struct nfs_closeargs { struct nfs_closeres { nfs4_stateid stateid; struct nfs_fattr * fattr; + struct nfs4_label *label; struct nfs_seqid * seqid; const struct nfs_server *server; struct nfs4_sequence_res seq_res; @@ -478,6 +481,7 @@ struct nfs4_delegreturnargs { struct nfs4_delegreturnres { struct nfs_fattr * fattr; + struct nfs4_label *label; const struct nfs_server *server; struct nfs4_sequence_res seq_res; }; @@ -498,6 +502,7 @@ struct nfs_readargs { struct nfs_readres { struct nfs_fattr * fattr; + struct nfs4_label *label; __u32 count; int eof; struct nfs4_sequence_res seq_res; @@ -566,6 +571,7 @@ struct nfs_removeargs { struct nfs_removeres { const struct nfs_server *server; struct nfs_fattr *dir_attr; + struct nfs4_label *dir_label; struct nfs4_change_info cinfo; struct nfs4_sequence_res seq_res; }; @@ -578,6 +584,8 @@ struct nfs_renameargs { const struct nfs_fh *new_dir; const struct qstr *old_name; const struct qstr *new_name; + const struct nfs4_label *old_label; + const struct nfs4_label *new_label; struct nfs4_sequence_args seq_args; }; @@ -585,8 +593,10 @@ struct nfs_renameres { const struct nfs_server *server; struct nfs4_change_info old_cinfo; struct nfs_fattr *old_fattr; + struct nfs4_label *old_label; struct nfs4_change_info new_cinfo; struct nfs_fattr *new_fattr; + struct nfs4_label *new_label; struct nfs4_sequence_res seq_res; }; @@ -634,6 +644,7 @@ struct nfs_setattrargs { struct iattr * iap; const struct nfs_server * server; /* Needed for name mapping */ const u32 * bitmask; + const struct nfs4_label *label; struct nfs4_sequence_args seq_args; }; @@ -669,6 +680,7 @@ struct nfs_getaclres { struct nfs_setattrres { struct nfs_fattr * fattr; + struct nfs4_label *label; const struct nfs_server * server; struct nfs4_sequence_res seq_res; }; @@ -715,6 +727,7 @@ struct nfs3_setaclargs { struct nfs_diropok { struct nfs_fh * fh; struct nfs_fattr * fattr; + struct nfs4_label *label; }; struct nfs_readlinkargs { @@ -844,6 +857,7 @@ struct nfs4_accessargs { struct nfs4_accessres { const struct nfs_server * server; struct nfs_fattr * fattr; + struct nfs4_label *label; u32 supported; u32 access; struct nfs4_sequence_res seq_res; @@ -866,6 +880,7 @@ struct nfs4_create_arg { const struct iattr * attrs; const struct nfs_fh * dir_fh; const u32 * bitmask; + const struct nfs4_label *label; struct nfs4_sequence_args seq_args; }; @@ -873,6 +888,7 @@ struct nfs4_create_res { const struct nfs_server * server; struct nfs_fh * fh; struct nfs_fattr * fattr; + struct nfs4_label *label; struct nfs4_change_info dir_cinfo; struct nfs4_sequence_res seq_res; }; @@ -898,6 +914,7 @@ struct nfs4_getattr_res { const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs4_sequence_res seq_res; + struct nfs4_label *label; }; struct nfs4_link_arg { @@ -911,8 +928,10 @@ struct nfs4_link_arg { struct nfs4_link_res { const struct nfs_server * server; struct nfs_fattr * fattr; + struct nfs4_label *label; struct nfs4_change_info cinfo; struct nfs_fattr * dir_attr; + struct nfs4_label *dir_label; struct nfs4_sequence_res seq_res; }; @@ -928,6 +947,7 @@ struct nfs4_lookup_res { const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs_fh * fh; + struct nfs4_label *label; struct nfs4_sequence_res seq_res; }; -- 1.7.11.7