diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index df658eacbe58..d42be87ca143 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -349,7 +349,7 @@ out_dput: return error; } -int +static int xfs_attrmulti_attr_get( struct inode *inode, unsigned char *name, @@ -381,7 +381,7 @@ out_kfree: return error; } -int +static int xfs_attrmulti_attr_set( struct inode *inode, unsigned char *name, @@ -412,6 +412,51 @@ xfs_attrmulti_attr_set( return error; } +int +xfs_ioc_attrmulti_one( + struct file *parfilp, + struct inode *inode, + uint32_t opcode, + void __user *uname, + void __user *value, + uint32_t *len, + uint32_t flags) +{ + unsigned char *name; + int error; + + if ((flags & ATTR_ROOT) && (flags & ATTR_SECURE)) + return -EINVAL; + flags &= ~ATTR_KERNEL_FLAGS; + + name = strndup_user(uname, MAXNAMELEN); + if (IS_ERR(name)) + return PTR_ERR(name); + + switch (opcode) { + case ATTR_OP_GET: + error = xfs_attrmulti_attr_get(inode, name, value, len, flags); + break; + case ATTR_OP_REMOVE: + value = NULL; + *len = 0; + /* fall through */ + case ATTR_OP_SET: + error = mnt_want_write_file(parfilp); + if (error) + break; + error = xfs_attrmulti_attr_set(inode, name, value, *len, flags); + mnt_drop_write_file(parfilp); + break; + default: + error = -EINVAL; + break; + } + + kfree(name); + return error; +} + STATIC int xfs_attrmulti_by_handle( struct file *parfilp, @@ -422,7 +467,6 @@ xfs_attrmulti_by_handle( xfs_fsop_attrmulti_handlereq_t am_hreq; struct dentry *dentry; unsigned int i, size; - unsigned char *attr_name; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -450,49 +494,10 @@ xfs_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { - if ((ops[i].am_flags & ATTR_ROOT) && - (ops[i].am_flags & ATTR_SECURE)) { - ops[i].am_error = -EINVAL; - continue; - } - ops[i].am_flags &= ~ATTR_KERNEL_FLAGS; - - attr_name = strndup_user(ops[i].am_attrname, MAXNAMELEN); - if (IS_ERR(attr_name)) { - ops[i].am_error = PTR_ERR(attr_name); - break; - } - - switch (ops[i].am_opcode) { - case ATTR_OP_GET: - ops[i].am_error = xfs_attrmulti_attr_get( - d_inode(dentry), attr_name, - ops[i].am_attrvalue, &ops[i].am_length, - ops[i].am_flags); - break; - case ATTR_OP_SET: - ops[i].am_error = mnt_want_write_file(parfilp); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - d_inode(dentry), attr_name, - ops[i].am_attrvalue, ops[i].am_length, - ops[i].am_flags); - mnt_drop_write_file(parfilp); - break; - case ATTR_OP_REMOVE: - ops[i].am_error = mnt_want_write_file(parfilp); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - d_inode(dentry), attr_name, NULL, 0, - ops[i].am_flags); - mnt_drop_write_file(parfilp); - break; - default: - ops[i].am_error = -EINVAL; - } - kfree(attr_name); + ops[i].am_error = xfs_ioc_attrmulti_one(parfilp, + d_inode(dentry), ops[i].am_opcode, + ops[i].am_attrname, ops[i].am_attrvalue, + &ops[i].am_length, ops[i].am_flags); } if (copy_to_user(am_hreq.ops, ops, size)) diff --git a/fs/xfs/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h index 819504df00ae..bb50cb3dc61f 100644 --- a/fs/xfs/xfs_ioctl.h +++ b/fs/xfs/xfs_ioctl.h @@ -30,21 +30,9 @@ xfs_readlink_by_handle( struct file *parfilp, xfs_fsop_handlereq_t *hreq); -extern int -xfs_attrmulti_attr_get( - struct inode *inode, - unsigned char *name, - unsigned char __user *ubuf, - uint32_t *len, - uint32_t flags); - -extern int -xfs_attrmulti_attr_set( - struct inode *inode, - unsigned char *name, - const unsigned char __user *ubuf, - uint32_t len, - uint32_t flags); +int xfs_ioc_attrmulti_one(struct file *parfilp, struct inode *inode, + uint32_t opcode, void __user *uname, void __user *value, + uint32_t *len, uint32_t flags); extern struct dentry * xfs_handle_to_dentry( diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index 936c2f62fb6c..e1daf095c585 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -418,7 +418,6 @@ xfs_compat_attrmulti_by_handle( compat_xfs_fsop_attrmulti_handlereq_t am_hreq; struct dentry *dentry; unsigned int i, size; - unsigned char *attr_name; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -447,50 +446,11 @@ xfs_compat_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { - if ((ops[i].am_flags & ATTR_ROOT) && - (ops[i].am_flags & ATTR_SECURE)) { - ops[i].am_error = -EINVAL; - continue; - } - ops[i].am_flags &= ~ATTR_KERNEL_FLAGS; - - attr_name = strndup_user(compat_ptr(ops[i].am_attrname), - MAXNAMELEN); - if (IS_ERR(attr_name)) { - ops[i].am_error = PTR_ERR(attr_name); - break; - } - - switch (ops[i].am_opcode) { - case ATTR_OP_GET: - ops[i].am_error = xfs_attrmulti_attr_get( - d_inode(dentry), attr_name, - compat_ptr(ops[i].am_attrvalue), - &ops[i].am_length, ops[i].am_flags); - break; - case ATTR_OP_SET: - ops[i].am_error = mnt_want_write_file(parfilp); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - d_inode(dentry), attr_name, - compat_ptr(ops[i].am_attrvalue), - ops[i].am_length, ops[i].am_flags); - mnt_drop_write_file(parfilp); - break; - case ATTR_OP_REMOVE: - ops[i].am_error = mnt_want_write_file(parfilp); - if (ops[i].am_error) - break; - ops[i].am_error = xfs_attrmulti_attr_set( - d_inode(dentry), attr_name, NULL, 0, - ops[i].am_flags); - mnt_drop_write_file(parfilp); - break; - default: - ops[i].am_error = -EINVAL; - } - kfree(attr_name); + ops[i].am_error = xfs_ioc_attrmulti_one(parfilp, + d_inode(dentry), ops[i].am_opcode, + compat_ptr(ops[i].am_attrname), + compat_ptr(ops[i].am_attrvalue), + &ops[i].am_length, ops[i].am_flags); } if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))