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* include/sys/sunddi.h, modules/spl/spl-module.c : Removed default

Browse Source 
udev support from sunddi implementation because it uses GPL-only
symbols.  This support is optionally available for SPL consumers
if they define HAVE_GPL_ONLY_SYMBOLS and license their module as
GPL using the MODULE_LICENSE("GPL") macro.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@179 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo 2008-11-13 21:43:30 +00:00
parent 5457aee1a3
commit 6a1c3d418a
5 changed files with 82 additions and 46 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2008-11-13 Brian Behlendorf <behlendorf1@llnl.gov>
* include/sys/sunddi.h, modules/spl/spl-module.c : Removed default
udev support from sunddi implementation because it uses GPL-only
symbols. This support is optionally available for SPL consumers
if they define HAVE_GPL_ONLY_SYMBOLS and license their module as
GPL using the MODULE_LICENSE("GPL") macro.
2008-11-05 Brian Behlendorf <behlendorf1@llnl.gov>
* : Tag spl-0.3.4

8
autoconf/spl-build.m4
View File

@ -30,7 +30,7 @@ AC_DEFUN([SPL_AC_KERNEL], [
AC_MSG_RESULT([Not found])
AC_MSG_ERROR([
*** Please specify the location of the kernel source
*** with the '--with-kernel=PATH' option])
*** with the '--with-linux=PATH' option])
fi
fi
@ -74,6 +74,12 @@ AC_DEFUN([SPL_AC_KERNEL], [
AC_SUBST(kmoduledir)
])
AC_DEFUN([SPL_AC_LICENSE], [
AC_MSG_CHECKING([license])
AC_MSG_RESULT([GPL])
KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS"
])
AC_DEFUN([SPL_AC_DEBUG], [
AC_MSG_CHECKING([whether debugging is enabled])
AC_ARG_ENABLE( [debug],

1
configure.ac
View File

@ -38,6 +38,7 @@ LINUX=
LINUX_OBJ=
SPL_AC_KERNEL
SPL_AC_LICENSE
SPL_AC_DEBUG
SPL_AC_DEBUG_KMEM
SPL_AC_DEBUG_MUTEX

61
include/sys/sunddi.h
View File

@ -87,6 +87,7 @@ typedef struct dev_info {
minor_t di_minor;
dev_t di_dev;
unsigned di_minors;
int di_flags;
struct list_head di_list;
} dev_info_t;
@ -180,6 +181,11 @@ typedef struct modldrv {
#define DDI_PROP_DONTPASS 0x0001
#define DDI_PROP_CANSLEEP 0x0002
#define GLOBAL_DEV 0x02
#define NODEBOUND_DEV 0x04
#define NODESPECIFIC_DEV 0x06
#define ENUMERATED_DEV 0x08
#define ddi_prop_lookup_string(x1,x2,x3,x4,x5) (*x5 = NULL)
#define ddi_prop_free(x) (void)0
#define ddi_root_node() (void)0
@ -189,7 +195,7 @@ typedef struct modldrv {
extern int __ddi_create_minor_node(dev_info_t *dip, char *name, int spec_type,
minor_t minor_num, char *node_type,
int flag, struct module *mod);
int flags, struct module *mod);
extern void __ddi_remove_minor_node(dev_info_t *dip, char *name);
extern int __mod_install(struct modlinkage *modlp);
extern int __mod_remove(struct modlinkage *modlp);
@ -197,19 +203,64 @@ extern int __mod_remove(struct modlinkage *modlp);
static __inline__ void ddi_report_dev(dev_info_t *d) { }
static __inline__ void ddi_prop_remove_all(dev_info_t *dip) { }
static __inline__ void
ddi_remove_minor_node(dev_info_t *di, char *name)
{
#ifdef HAVE_GPL_ONLY_SYMBOLS
/* Cleanup udev (GPL-only symbols required). This is performed as
* part of an inline function to ensure that these symbols are not
* linked against the SPL which is GPL'ed. But instead they are
* linked against the package building against the SPL to ensure
* its license allows linking with GPL-only symbols. */
if (di->di_class) {
spl_device_destroy(di->di_class, di->di_device, di->di_dev);
spl_class_destroy(di->di_class);
di->di_class = NULL;
di->di_dev = 0;
}
#endif
__ddi_remove_minor_node(di, name);
}
static __inline__ int
ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
minor_t minor_num, char *node_type, int flag)
minor_t minor_num, char *node_type, int flags)
{
return __ddi_create_minor_node(di, name, spec_type, minor_num,
node_type, flag, THIS_MODULE);
int rc;
rc = __ddi_create_minor_node(di, name, spec_type, minor_num,
node_type, flags, THIS_MODULE);
if (rc)
return rc;
#ifdef HAVE_GPL_ONLY_SYMBOLS
/* Setup udev (GPL-only symbols required). This is performed as
* part of an inline function to ensure that these symbols are not
* linked against the SPL which is GPL'ed. But instead they are
* linked against the package building against the SPL to ensure
* its license allows linking with GPL-only symbols. */
di->di_class = spl_class_create(THIS_MODULE, name);
if (IS_ERR(di->di_class)) {
rc = PTR_ERR(di->di_class);
di->di_class = NULL;
ddi_remove_minor_node(di, name);
CERROR("Error creating %s class, %d\n", name, rc);
RETURN(DDI_FAILURE);
}
/* Do not append a 0 to devices with minor nums of 0 */
di->di_device = spl_device_create(di->di_class, NULL, di->di_dev, NULL,
(di->di_minor == 0) ? "%s" : "%s%d",
name, di->di_minor);
#endif
return rc;
}
#undef mod_install
#undef mod_remove
#define ddi_remove_minor_node __ddi_remove_minor_node
#define mod_install __mod_install
#define mod_remove __mod_remove

50
modules/spl/spl-module.c
View File

@ -58,7 +58,7 @@ mod_generic_ioctl(struct inode *ino, struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct dev_info *di;
int rc, flag = 0, rvalp = 0;
int rc, flags = 0, rvalp = 0;
cred_t *cr = NULL;
di = get_dev_info(MKDEV(imajor(ino), iminor(ino)));
@ -67,14 +67,14 @@ mod_generic_ioctl(struct inode *ino, struct file *filp,
rc = di->di_ops->devo_cb_ops->cb_ioctl(di->di_dev,
(int)cmd,(intptr_t)arg,
flag, cr, &rvalp);
flags, cr, &rvalp);
return rc;
}
int
__ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
minor_t minor_num, char *node_type,
int flag, struct module *mod)
int flags, struct module *mod)
{
struct cdev *cdev;
struct dev_ops *dev_ops;
@ -86,7 +86,6 @@ __ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
ASSERT(spec_type == S_IFCHR);
ASSERT(minor_num < di->di_minors);
ASSERT(!strcmp(node_type, DDI_PSEUDO));
ASSERT(flag == 0);
fops = kzalloc(sizeof(struct file_operations), GFP_KERNEL);
if (fops == NULL)
@ -141,8 +140,10 @@ __ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
ASSERT(cb_ops->cb_aread == NULL);
ASSERT(cb_ops->cb_awrite == NULL);
di->di_cdev = cdev;
di->di_flags = flags;
di->di_minor = minor_num;
di->di_dev = MKDEV(di->di_major, di->di_minor);
di->di_dev = MKDEV(di->di_major, di->di_minor);
rc = cdev_add(cdev, di->di_dev, 1);
if (rc) {
@ -153,29 +154,6 @@ __ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
RETURN(DDI_FAILURE);
}
di->di_class = spl_class_create(THIS_MODULE, name);
if (IS_ERR(di->di_class)) {
rc = PTR_ERR(di->di_class);
CERROR("Error creating %s class, %d\n", name, rc);
kfree(fops);
cdev_del(di->di_cdev);
mutex_exit(&di->di_lock);
RETURN(DDI_FAILURE);
}
/* Do not append a 0 to devices with minor nums of 0 */
if (di->di_minor == 0) {
di->di_device = spl_device_create(di->di_class, NULL,
di->di_dev, NULL,
"%s", name);
} else {
di->di_device = spl_device_create(di->di_class, NULL,
di->di_dev, NULL,
"%s%d", name, di->di_minor);
}
di->di_cdev = cdev;
spin_lock(&dev_info_lock);
list_add(&di->di_list, &dev_info_list);
spin_unlock(&dev_info_lock);
@ -184,19 +162,11 @@ __ddi_create_minor_node(dev_info_t *di, char *name, int spec_type,
RETURN(DDI_SUCCESS);
}
EXPORT_SYMBOL_GPL(__ddi_create_minor_node);
EXPORT_SYMBOL(__ddi_create_minor_node);
static void
__ddi_remove_minor_node_locked(dev_info_t *di, char *name)
{
if (di->di_class) {
spl_device_destroy(di->di_class, di->di_device, di->di_dev);
spl_class_destroy(di->di_class);
di->di_class = NULL;
di->di_dev = 0;
}
if (di->di_cdev) {
cdev_del(di->di_cdev);
di->di_cdev = NULL;
@ -216,19 +186,19 @@ __ddi_remove_minor_node(dev_info_t *di, char *name)
mutex_exit(&di->di_lock);
EXIT;
}
EXPORT_SYMBOL_GPL(ddi_remove_minor_node);
EXPORT_SYMBOL(__ddi_remove_minor_node);
#if 0
static int
mod_generic_open(struct inode *, struct file *)
{
open(dev_t *devp, int flag, int otyp, cred_t *credp);
open(dev_t *devp, int flags, int otyp, cred_t *credp);
}
static int
mod_generic_close(struct inode *, struct file *)
{
close(dev_t dev, int flag, int otyp, cred_t *credp);
close(dev_t dev, int flags, int otyp, cred_t *credp);
}
static ssize_t