#include <sys/kauth.h>
#include <sys/mount_internal.h>
#include <sys/malloc.h>
-
+#include <sys/conf.h>
#include <libkern/OSAtomic.h>
+#include <atm/atm_internal.h>
#if CONFIG_MACF
#include <security/mac_framework.h>
static int devfs_statfs( struct mount *mp, struct vfsstatfs *sbp, vfs_context_t ctx);
static int devfs_vfs_getattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t ctx);
-#if !defined(SECURE_KERNEL)
-extern int setup_kmem;
-__private_extern__ void devfs_setup_kmem(void);
+#if CONFIG_DEV_KMEM
+extern boolean_t dev_kmem_enabled;
#endif
/*-
static int
devfs_init(__unused struct vfsconf *vfsp)
{
- if (devfs_sinit())
- return (ENOTSUP);
- devfs_make_node(makedev(0, 0), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0622, "console");
- devfs_make_node(makedev(2, 0), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0666, "tty");
-#if !defined(SECURE_KERNEL)
- if (setup_kmem) {
- devfs_setup_kmem();
- }
+ if (devfs_sinit())
+ return (ENOTSUP);
+ devfs_make_node(makedev(0, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0622, "console");
+ devfs_make_node(makedev(2, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0666, "tty");
+#if CONFIG_DEV_KMEM
+ if (dev_kmem_enabled) {
+ /* (3,0) reserved for /dev/mem physical memory */
+ devfs_make_node(makedev(3, 1), DEVFS_CHAR,
+ UID_ROOT, GID_KMEM, 0640, "kmem");
+ }
#endif
- devfs_make_node(makedev(3, 2), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0666, "null");
- devfs_make_node(makedev(3, 3), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0666, "zero");
- devfs_make_node(makedev(6, 0), DEVFS_CHAR,
- UID_ROOT, GID_WHEEL, 0600, "klog");
+ devfs_make_node(makedev(3, 2), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0666, "null");
+ devfs_make_node(makedev(3, 3), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0666, "zero");
+ uint32_t logging_config = atm_get_diagnostic_config();
+
+ devfs_make_node(makedev(6, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0600, "klog");
+
+ if ( !(logging_config & ATM_TRACE_DISABLE) ) {
+ devfs_make_node(makedev(7, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0600, "oslog");
+ if (cdevsw_setkqueueok(7, (&(cdevsw[7])), 0) == -1) {
+ return (ENOTSUP);
+ }
+
+ devfs_make_node(makedev(8, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0600, "oslog_stream");
+ if (cdevsw_setkqueueok(8, (&(cdevsw[8])), 0) == -1) {
+ return (ENOTSUP);
+ }
+ }
+
#if FDESC
- devfs_fdesc_init();
+ devfs_fdesc_init();
#endif
return 0;
}
-#if !defined(SECURE_KERNEL)
-__private_extern__ void
-devfs_setup_kmem(void)
-{
- devfs_make_node(makedev(3, 0), DEVFS_CHAR,
- UID_ROOT, GID_KMEM, 0640, "mem");
- devfs_make_node(makedev(3, 1), DEVFS_CHAR,
- UID_ROOT, GID_KMEM, 0640, "kmem");
-}
-#endif
-
-
/*-
* mp - pointer to 'mount' structure
* path - addr in user space of mount point (ie /usr or whatever)
/*-
* Fill out some fields
*/
- mp->mnt_data = (qaddr_t)devfs_mp_p;
+ __IGNORE_WCASTALIGN(mp->mnt_data = (qaddr_t)devfs_mp_p);
mp->mnt_vfsstat.f_fsid.val[0] = (int32_t)(uintptr_t)devfs_mp_p;
mp->mnt_vfsstat.f_fsid.val[1] = vfs_typenum(mp);
mp->mnt_flag |= MNT_LOCAL;
int
devfs_kernel_mount(char * mntname)
{
- struct mount *mp;
int error;
- struct nameidata nd;
- struct vnode * vp;
vfs_context_t ctx = vfs_context_kernel();
- struct vfstable *vfsp;
-
- /* Find our vfstable entry */
- for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
- if (!strncmp(vfsp->vfc_name, "devfs", sizeof(vfsp->vfc_name)))
- break;
-
- if (!vfsp) {
- panic("Could not find entry in vfsconf for devfs.\n");
- }
-
- /*
- * Get vnode to be covered
- */
- NDINIT(&nd, LOOKUP, OP_MOUNT, FOLLOW | LOCKLEAF, UIO_SYSSPACE,
- CAST_USER_ADDR_T(mntname), ctx);
- if ((error = namei(&nd))) {
- printf("devfs_kernel_mount: failed to find directory '%s', %d",
- mntname, error);
- return (error);
- }
- nameidone(&nd);
- vp = nd.ni_vp;
-
- if ((error = VNOP_FSYNC(vp, MNT_WAIT, ctx))) {
- printf("devfs_kernel_mount: vnop_fsync failed: %d\n", error);
- vnode_put(vp);
- return (error);
- }
- if ((error = buf_invalidateblks(vp, BUF_WRITE_DATA, 0, 0))) {
- printf("devfs_kernel_mount: buf_invalidateblks failed: %d\n", error);
- vnode_put(vp);
- return (error);
- }
- if (vnode_isdir(vp) == 0) {
- printf("devfs_kernel_mount: '%s' is not a directory\n", mntname);
- vnode_put(vp);
- return (ENOTDIR);
- }
- if ((vnode_mountedhere(vp))) {
- vnode_put(vp);
- return (EBUSY);
- }
-
- /*
- * Allocate and initialize the filesystem.
- */
- MALLOC_ZONE(mp, struct mount *, sizeof(struct mount),
- M_MOUNT, M_WAITOK);
- bzero((char *)mp, sizeof(struct mount));
-
- /* Initialize the default IO constraints */
- mp->mnt_maxreadcnt = mp->mnt_maxwritecnt = MAXPHYS;
- mp->mnt_segreadcnt = mp->mnt_segwritecnt = 32;
- mp->mnt_ioflags = 0;
- mp->mnt_realrootvp = NULLVP;
- mp->mnt_authcache_ttl = CACHED_LOOKUP_RIGHT_TTL;
-
- mount_lock_init(mp);
- TAILQ_INIT(&mp->mnt_vnodelist);
- TAILQ_INIT(&mp->mnt_workerqueue);
- TAILQ_INIT(&mp->mnt_newvnodes);
-
- (void)vfs_busy(mp, LK_NOWAIT);
- mp->mnt_op = &devfs_vfsops;
- mp->mnt_vtable = vfsp;
- mp->mnt_flag = 0;
- mp->mnt_flag |= vfsp->vfc_flags & MNT_VISFLAGMASK;
- strlcpy(mp->mnt_vfsstat.f_fstypename, vfsp->vfc_name, MFSTYPENAMELEN);
- vp->v_mountedhere = mp;
- mp->mnt_vnodecovered = vp;
- mp->mnt_vfsstat.f_owner = kauth_cred_getuid(kauth_cred_get());
- (void) copystr(mntname, mp->mnt_vfsstat.f_mntonname, MAXPATHLEN - 1, 0);
-#if CONFIG_MACF
- mac_mount_label_init(mp);
- mac_mount_label_associate(ctx, mp);
-#endif
-
- error = devfs_mount(mp, NULL, USER_ADDR_NULL, ctx);
+ char fsname[] = "devfs";
+ error = kernel_mount(fsname, NULLVP, NULLVP, mntname, NULL, 0, MNT_DONTBROWSE, KERNEL_MOUNT_NOAUTH, ctx);
if (error) {
- printf("devfs_kernel_mount: mount %s failed: %d", mntname, error);
- mp->mnt_vtable->vfc_refcount--;
-
- vfs_unbusy(mp);
-
- mount_lock_destroy(mp);
-#if CONFIG_MACF
- mac_mount_label_destroy(mp);
-#endif
- FREE_ZONE(mp, sizeof (struct mount), M_MOUNT);
- vnode_put(vp);
- return (error);
+ printf("devfs_kernel_mount: kernel_mount failed: %d\n", error);
+ return (error);
}
- vnode_ref(vp);
- vnode_put(vp);
- vfs_unbusy(mp);
- mount_list_add(mp);
+
return (0);
}
struct vfsops devfs_vfsops = {
- devfs_mount,
- devfs_start,
- devfs_unmount,
- devfs_root,
- NULL, /* quotactl */
- devfs_vfs_getattr,
- devfs_sync,
- devfs_vget,
- devfs_fhtovp,
- devfs_vptofh,
- devfs_init,
- devfs_sysctl,
- NULL,
- {NULL}
+ .vfs_mount = devfs_mount,
+ .vfs_start = devfs_start,
+ .vfs_unmount = devfs_unmount,
+ .vfs_root = devfs_root,
+ .vfs_getattr = devfs_vfs_getattr,
+ .vfs_sync = devfs_sync,
+ .vfs_vget = devfs_vget,
+ .vfs_fhtovp = devfs_fhtovp,
+ .vfs_vptofh = devfs_vptofh,
+ .vfs_init = devfs_init,
+ .vfs_sysctl = devfs_sysctl,
+ // There are other VFS ops that we do not support
};
projects / apple / xnu.git / blobdiff