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diff --git a/sys/kern/uipc_mqueue.c b/sys/kern/uipc_mqueue.c
--- a/sys/kern/uipc_mqueue.c
+++ b/sys/kern/uipc_mqueue.c
@@ -33,23 +33,6 @@
*
*/
-/*
- * POSIX message queue implementation.
- *
- * 1) A mqueue filesystem can be mounted, each message queue appears
- * in mounted directory, user can change queue's permission and
- * ownership, or remove a queue. Manually creating a file in the
- * directory causes a message queue to be created in the kernel with
- * default message queue attributes applied and same name used, this
- * method is not advocated since mq_open syscall allows user to specify
- * different attributes. Also the file system can be mounted multiple
- * times at different mount points but shows same contents.
- *
- * 2) Standard POSIX message queue API. The syscalls do not use vfs layer,
- * but directly operate on internal data structure, this allows user to
- * use the IPC facility without having to mount mqueue file system.
- */
-
#include "opt_capsicum.h"
#include <sys/param.h>
@@ -57,9 +40,7 @@
#include <sys/systm.h>
#include <sys/limits.h>
#include <sys/malloc.h>
-#include <sys/buf.h>
#include <sys/capsicum.h>
-#include <sys/dirent.h>
#include <sys/event.h>
#include <sys/eventhandler.h>
#include <sys/fcntl.h>
@@ -68,26 +49,25 @@
#include <sys/jail.h>
#include <sys/lock.h>
#include <sys/module.h>
-#include <sys/mount.h>
#include <sys/mqueue.h>
#include <sys/mutex.h>
-#include <sys/namei.h>
+#include <sys/proc.h>
#include <sys/posix4.h>
#include <sys/poll.h>
#include <sys/priv.h>
-#include <sys/proc.h>
#include <sys/queue.h>
-#include <sys/sysproto.h>
+#include <sys/selinfo.h>
#include <sys/stat.h>
+#include <sys/sysproto.h>
#include <sys/syscall.h>
#include <sys/syscallsubr.h>
#include <sys/sysent.h>
-#include <sys/sx.h>
#include <sys/sysctl.h>
-#include <sys/taskqueue.h>
#include <sys/unistd.h>
#include <sys/user.h>
#include <sys/vnode.h>
+#include <vm/vm.h>
+#include <vm/uma.h>
#include <machine/atomic.h>
#include <security/audit/audit.h>
@@ -122,13 +102,6 @@
struct unrhdr *mi_unrhdr;
};
-struct mqfs_vdata {
- LIST_ENTRY(mqfs_vdata) mv_link;
- struct mqfs_node *mv_node;
- struct vnode *mv_vnode;
- struct task mv_task;
-};
-
/*
* mqfs_node: describes a node (file or directory) within a mqfs
*/
@@ -197,7 +170,7 @@
};
static SYSCTL_NODE(_kern, OID_AUTO, mqueue, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
- "POSIX real time message queue");
+ "POSIX real time message queue");
static int default_maxmsg = 10;
SYSCTL_INT(_kern_mqueue, OID_AUTO, default_maxmsg, CTLFLAG_RD,
@@ -227,28 +200,15 @@
static struct mqfs_info mqfs_data;
static uma_zone_t mqnode_zone;
static uma_zone_t mqueue_zone;
-static uma_zone_t mvdata_zone;
static uma_zone_t mqnoti_zone;
-static struct vop_vector mqfs_vnodeops;
static struct fileops mqueueops;
static unsigned mqfs_osd_jail_slot;
-/*
- * Directory structure construction and manipulation
- */
-#ifdef notyet
-static struct mqfs_node *mqfs_create_dir(struct mqfs_node *parent,
- const char *name, int namelen, struct ucred *cred, int mode);
-static struct mqfs_node *mqfs_create_link(struct mqfs_node *parent,
- const char *name, int namelen, struct ucred *cred, int mode);
-#endif
-
static struct mqfs_node *mqfs_create_file(struct mqfs_node *parent,
const char *name, int namelen, struct ucred *cred, int mode);
static int mqfs_destroy(struct mqfs_node *mn);
static void mqfs_fileno_alloc(struct mqfs_info *mi, struct mqfs_node *mn);
static void mqfs_fileno_free(struct mqfs_info *mi, struct mqfs_node *mn);
-static int mqfs_allocv(struct mount *mp, struct vnode **vpp, struct mqfs_node *pn);
static int mqfs_prison_remove(void *obj, void *data);
/*
@@ -442,6 +402,27 @@
return (0);
}
+/*
+ * Search a directory entry
+ */
+static struct mqfs_node *
+mqfs_search(struct mqfs_node *pd, const char *name, int len, struct ucred *cred)
+{
+ struct mqfs_node *pn;
+ const void *pr_root;
+
+ sx_assert(&pd->mn_info->mi_lock, SX_LOCKED);
+ pr_root = cred->cr_prison->pr_root;
+ LIST_FOREACH(pn, &pd->mn_children, mn_sibling) {
+ /* Only match names within the same prison root directory */
+ if ((pn->mn_pr_root == NULL || pn->mn_pr_root == pr_root) &&
+ strncmp(pn->mn_name, name, len) == 0 &&
+ pn->mn_name[len] == '\0')
+ return (pn);
+ }
+ return (NULL);
+}
+
static struct mqfs_node *
mqfs_create_node(const char *name, int namelen, struct ucred *cred, int mode,
int nodetype)
@@ -479,79 +460,6 @@
return (node);
}
-/*
- * Add . and .. to a directory
- */
-static int
-mqfs_fixup_dir(struct mqfs_node *parent)
-{
- struct mqfs_node *dir;
-
- dir = mqnode_alloc();
- dir->mn_name[0] = '.';
- dir->mn_type = mqfstype_this;
- dir->mn_refcount = 1;
- if (mqfs_add_node(parent, dir) != 0) {
- mqnode_free(dir);
- return (-1);
- }
-
- dir = mqnode_alloc();
- dir->mn_name[0] = dir->mn_name[1] = '.';
- dir->mn_type = mqfstype_parent;
- dir->mn_refcount = 1;
-
- if (mqfs_add_node(parent, dir) != 0) {
- mqnode_free(dir);
- return (-1);
- }
-
- return (0);
-}
-
-#ifdef notyet
-
-/*
- * Create a directory
- */
-static struct mqfs_node *
-mqfs_create_dir(struct mqfs_node *parent, const char *name, int namelen,
- struct ucred *cred, int mode)
-{
- struct mqfs_node *node;
-
- node = mqfs_create_node(name, namelen, cred, mode, mqfstype_dir);
- if (mqfs_add_node(parent, node) != 0) {
- mqnode_free(node);
- return (NULL);
- }
-
- if (mqfs_fixup_dir(node) != 0) {
- mqfs_destroy(node);
- return (NULL);
- }
- return (node);
-}
-
-/*
- * Create a symlink
- */
-static struct mqfs_node *
-mqfs_create_link(struct mqfs_node *parent, const char *name, int namelen,
- struct ucred *cred, int mode)
-{
- struct mqfs_node *node;
-
- node = mqfs_create_node(name, namelen, cred, mode, mqfstype_symlink);
- if (mqfs_add_node(parent, node) != 0) {
- mqnode_free(node);
- return (NULL);
- }
- return (node);
-}
-
-#endif
-
/*
* Destroy a node or a tree of nodes
*/
@@ -585,77 +493,11 @@
return (0);
}
-/*
- * Mount a mqfs instance
- */
-static int
-mqfs_mount(struct mount *mp)
-{
- struct statfs *sbp;
-
- if (mp->mnt_flag & MNT_UPDATE)
- return (EOPNOTSUPP);
-
- mp->mnt_data = &mqfs_data;
- MNT_ILOCK(mp);
- mp->mnt_flag |= MNT_LOCAL;
- MNT_IUNLOCK(mp);
- vfs_getnewfsid(mp);
-
- sbp = &mp->mnt_stat;
- vfs_mountedfrom(mp, "mqueue");
- sbp->f_bsize = PAGE_SIZE;
- sbp->f_iosize = PAGE_SIZE;
- sbp->f_blocks = 1;
- sbp->f_bfree = 1;
- sbp->f_bavail = 0;
- sbp->f_files = 0;
- sbp->f_ffree = 0;
- return (0);
-}
-
-/*
- * Unmount a mqfs instance
- */
-static int
-mqfs_unmount(struct mount *mp, int mntflags)
-{
- int error;
-
- error = vflush(mp, 0, (mntflags & MNT_FORCE) ? FORCECLOSE : 0,
- curthread);
- return (error);
-}
-
-/*
- * Return a root vnode
- */
-static int
-mqfs_root(struct mount *mp, int flags, struct vnode **vpp)
-{
- struct mqfs_info *mqfs;
- int ret;
-
- mqfs = VFSTOMQFS(mp);
- ret = mqfs_allocv(mp, vpp, mqfs->mi_root);
- return (ret);
-}
-
-/*
- * Return filesystem stats
- */
-static int
-mqfs_statfs(struct mount *mp, struct statfs *sbp)
-{
- /* XXX update statistics */
- return (0);
-}
-
/*
* Initialize a mqfs instance
*/
-static int
-mqfs_init(struct vfsconf *vfc)
+static void
+mqfs_init(void)
{
struct mqfs_node *root;
struct mqfs_info *mi;
@@ -664,44 +506,36 @@
};
mqnode_zone = uma_zcreate("mqnode", sizeof(struct mqfs_node),
- NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
+ NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
mqueue_zone = uma_zcreate("mqueue", sizeof(struct mqueue),
- NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
- mvdata_zone = uma_zcreate("mvdata",
- sizeof(struct mqfs_vdata), NULL, NULL, NULL,
- NULL, UMA_ALIGN_PTR, 0);
+ NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
mqnoti_zone = uma_zcreate("mqnotifier", sizeof(struct mqueue_notifier),
- NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
+ NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
mi = &mqfs_data;
sx_init(&mi->mi_lock, "mqfs lock");
/* set up the root diretory */
root = mqfs_create_node("/", 1, curthread->td_ucred, 01777,
- mqfstype_root);
+ mqfstype_root);
root->mn_info = mi;
LIST_INIT(&root->mn_children);
- LIST_INIT(&root->mn_vnodes);
mi->mi_root = root;
mqfs_fileno_init(mi);
mqfs_fileno_alloc(mi, root);
- mqfs_fixup_dir(root);
exit_tag = EVENTHANDLER_REGISTER(process_exit, mq_proc_exit, NULL,
EVENTHANDLER_PRI_ANY);
mq_fdclose = mqueue_fdclose;
p31b_setcfg(CTL_P1003_1B_MESSAGE_PASSING, _POSIX_MESSAGE_PASSING);
mqfs_osd_jail_slot = osd_jail_register(NULL, methods);
- return (0);
}
/*
* Destroy a mqfs instance
*/
static int
-mqfs_uninit(struct vfsconf *vfc)
+mqfs_uninit(void)
{
struct mqfs_info *mi;
- if (!unloadable)
- return (EOPNOTSUPP);
osd_jail_deregister(mqfs_osd_jail_slot);
EVENTHANDLER_DEREGISTER(process_exit, exit_tag);
mi = &mqfs_data;
@@ -711,313 +545,10 @@
sx_destroy(&mi->mi_lock);
uma_zdestroy(mqnode_zone);
uma_zdestroy(mqueue_zone);
- uma_zdestroy(mvdata_zone);
uma_zdestroy(mqnoti_zone);
return (0);
}
-/*
- * task routine
- */
-static void
-do_recycle(void *context, int pending __unused)
-{
- struct vnode *vp = (struct vnode *)context;
-
- vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
- vrecycle(vp);
- VOP_UNLOCK(vp);
- vdrop(vp);
-}
-
-/*
- * Allocate a vnode
- */
-static int
-mqfs_allocv(struct mount *mp, struct vnode **vpp, struct mqfs_node *pn)
-{
- struct mqfs_vdata *vd;
- struct mqfs_info *mqfs;
- struct vnode *newvpp;
- int error;
-
- mqfs = pn->mn_info;
- *vpp = NULL;
- sx_xlock(&mqfs->mi_lock);
- LIST_FOREACH(vd, &pn->mn_vnodes, mv_link) {
- if (vd->mv_vnode->v_mount == mp) {
- vhold(vd->mv_vnode);
- break;
- }
- }
-
- if (vd != NULL) {
-found:
- *vpp = vd->mv_vnode;
- sx_xunlock(&mqfs->mi_lock);
- error = vget(*vpp, LK_RETRY | LK_EXCLUSIVE);
- vdrop(*vpp);
- return (error);
- }
- sx_xunlock(&mqfs->mi_lock);
-
- error = getnewvnode("mqueue", mp, &mqfs_vnodeops, &newvpp);
- if (error)
- return (error);
- vn_lock(newvpp, LK_EXCLUSIVE | LK_RETRY);
- error = insmntque(newvpp, mp);
- if (error != 0)
- return (error);
-
- sx_xlock(&mqfs->mi_lock);
- /*
- * Check if it has already been allocated
- * while we were blocked.
- */
- LIST_FOREACH(vd, &pn->mn_vnodes, mv_link) {
- if (vd->mv_vnode->v_mount == mp) {
- vhold(vd->mv_vnode);
- sx_xunlock(&mqfs->mi_lock);
-
- vgone(newvpp);
- vput(newvpp);
- goto found;
- }
- }
-
- *vpp = newvpp;
-
- vd = uma_zalloc(mvdata_zone, M_WAITOK);
- (*vpp)->v_data = vd;
- vd->mv_vnode = *vpp;
- vd->mv_node = pn;
- TASK_INIT(&vd->mv_task, 0, do_recycle, *vpp);
- LIST_INSERT_HEAD(&pn->mn_vnodes, vd, mv_link);
- mqnode_addref(pn);
- switch (pn->mn_type) {
- case mqfstype_root:
- (*vpp)->v_vflag = VV_ROOT;
- /* fall through */
- case mqfstype_dir:
- case mqfstype_this:
- case mqfstype_parent:
- (*vpp)->v_type = VDIR;
- break;
- case mqfstype_file:
- (*vpp)->v_type = VREG;
- break;
- case mqfstype_symlink:
- (*vpp)->v_type = VLNK;
- break;
- case mqfstype_none:
- KASSERT(0, ("mqfs_allocf called for null node\n"));
- default:
- panic("%s has unexpected type: %d", pn->mn_name, pn->mn_type);
- }
- sx_xunlock(&mqfs->mi_lock);
- vn_set_state(*vpp, VSTATE_CONSTRUCTED);
- return (0);
-}
-
-/*
- * Search a directory entry
- */
-static struct mqfs_node *
-mqfs_search(struct mqfs_node *pd, const char *name, int len, struct ucred *cred)
-{
- struct mqfs_node *pn;
- const void *pr_root;
-
- sx_assert(&pd->mn_info->mi_lock, SX_LOCKED);
- pr_root = cred->cr_prison->pr_root;
- LIST_FOREACH(pn, &pd->mn_children, mn_sibling) {
- /* Only match names within the same prison root directory */
- if ((pn->mn_pr_root == NULL || pn->mn_pr_root == pr_root) &&
- strncmp(pn->mn_name, name, len) == 0 &&
- pn->mn_name[len] == '\0')
- return (pn);
- }
- return (NULL);
-}
-
-/*
- * Look up a file or directory.
- */
-static int
-mqfs_lookupx(struct vop_cachedlookup_args *ap)
-{
- struct componentname *cnp;
- struct vnode *dvp, **vpp;
- struct mqfs_node *pd;
- struct mqfs_node *pn;
- struct mqfs_info *mqfs;
- int nameiop, flags, error, namelen;
- char *pname;
- struct thread *td;
-
- td = curthread;
- cnp = ap->a_cnp;
- vpp = ap->a_vpp;
- dvp = ap->a_dvp;
- pname = cnp->cn_nameptr;
- namelen = cnp->cn_namelen;
- flags = cnp->cn_flags;
- nameiop = cnp->cn_nameiop;
- pd = VTON(dvp);
- pn = NULL;
- mqfs = pd->mn_info;
- *vpp = NULLVP;
-
- if (dvp->v_type != VDIR)
- return (ENOTDIR);
-
- error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, td);
- if (error)
- return (error);
-
- /* shortcut: check if the name is too long */
- if (cnp->cn_namelen >= MQFS_NAMELEN)
- return (ENOENT);
-
- /* self */
- if (namelen == 1 && pname[0] == '.') {
- if ((flags & ISLASTCN) && nameiop != LOOKUP)
- return (EINVAL);
- pn = pd;
- *vpp = dvp;
- VREF(dvp);
- return (0);
- }
-
- /* parent */
- if (cnp->cn_flags & ISDOTDOT) {
- if (dvp->v_vflag & VV_ROOT)
- return (EIO);
- if ((flags & ISLASTCN) && nameiop != LOOKUP)
- return (EINVAL);
- VOP_UNLOCK(dvp);
- KASSERT(pd->mn_parent, ("non-root directory has no parent"));
- pn = pd->mn_parent;
- error = mqfs_allocv(dvp->v_mount, vpp, pn);
- vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
- return (error);
- }
-
- /* named node */
- sx_xlock(&mqfs->mi_lock);
- pn = mqfs_search(pd, pname, namelen, cnp->cn_cred);
- if (pn != NULL)
- mqnode_addref(pn);
- sx_xunlock(&mqfs->mi_lock);
-
- /* found */
- if (pn != NULL) {
- /* DELETE */
- if (nameiop == DELETE && (flags & ISLASTCN)) {
- error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
- if (error) {
- mqnode_release(pn);
- return (error);
- }
- if (*vpp == dvp) {
- VREF(dvp);
- *vpp = dvp;
- mqnode_release(pn);
- return (0);
- }
- }
-
- /* allocate vnode */
- error = mqfs_allocv(dvp->v_mount, vpp, pn);
- mqnode_release(pn);
- if (error == 0 && cnp->cn_flags & MAKEENTRY)
- cache_enter(dvp, *vpp, cnp);
- return (error);
- }
-
- /* not found */
-
- /* will create a new entry in the directory ? */
- if ((nameiop == CREATE || nameiop == RENAME) && (flags & LOCKPARENT)
- && (flags & ISLASTCN)) {
- error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred, td);
- if (error)
- return (error);
- return (EJUSTRETURN);
- }
- return (ENOENT);
-}
-
-#if 0
-struct vop_lookup_args {
- struct vop_generic_args a_gen;
- struct vnode *a_dvp;
- struct vnode **a_vpp;
- struct componentname *a_cnp;
-};
-#endif
-
-/*
- * vnode lookup operation
- */
-static int
-mqfs_lookup(struct vop_cachedlookup_args *ap)
-{
- int rc;
-
- rc = mqfs_lookupx(ap);
- return (rc);
-}
-
-#if 0
-struct vop_create_args {
- struct vnode *a_dvp;
- struct vnode **a_vpp;
- struct componentname *a_cnp;
- struct vattr *a_vap;
-};
-#endif
-
-/*
- * vnode creation operation
- */
-static int
-mqfs_create(struct vop_create_args *ap)
-{
- struct mqfs_info *mqfs = VFSTOMQFS(ap->a_dvp->v_mount);
- struct componentname *cnp = ap->a_cnp;
- struct mqfs_node *pd;
- struct mqfs_node *pn;
- struct mqueue *mq;
- int error;
-
- pd = VTON(ap->a_dvp);
- if (pd->mn_type != mqfstype_root && pd->mn_type != mqfstype_dir)
- return (ENOTDIR);
- mq = mqueue_alloc(NULL);
- if (mq == NULL)
- return (EAGAIN);
- sx_xlock(&mqfs->mi_lock);
- pn = mqfs_create_file(pd, cnp->cn_nameptr, cnp->cn_namelen,
- cnp->cn_cred, ap->a_vap->va_mode);
- if (pn == NULL) {
- sx_xunlock(&mqfs->mi_lock);
- error = ENOSPC;
- } else {
- mqnode_addref(pn);
- sx_xunlock(&mqfs->mi_lock);
- error = mqfs_allocv(ap->a_dvp->v_mount, ap->a_vpp, pn);
- mqnode_release(pn);
- if (error)
- mqfs_destroy(pn);
- else
- pn->mn_data = mq;
- }
- if (error)
- mqueue_free(mq);
- return (error);
-}
-
/*
* Remove an entry
*/
@@ -1025,7 +556,6 @@
do_unlink(struct mqfs_node *pn, struct ucred *ucred)
{
struct mqfs_node *parent;
- struct mqfs_vdata *vd;
int error = 0;
sx_assert(&pn->mn_info->mi_lock, SX_LOCKED);
@@ -1038,11 +568,6 @@
pn->mn_parent = NULL;
pn->mn_deleted = 1;
LIST_REMOVE(pn, mn_sibling);
- LIST_FOREACH(vd, &pn->mn_vnodes, mv_link) {
- cache_purge(vd->mv_vnode);
- vhold(vd->mv_vnode);
- taskqueue_enqueue(taskqueue_thread, &vd->mv_task);
- }
mqnode_release(pn);
mqnode_release(parent);
} else
@@ -1050,508 +575,6 @@
return (error);
}
-#if 0
-struct vop_remove_args {
- struct vnode *a_dvp;
- struct vnode *a_vp;
- struct componentname *a_cnp;
-};
-#endif
-
-/*
- * vnode removal operation
- */
-static int
-mqfs_remove(struct vop_remove_args *ap)
-{
- struct mqfs_info *mqfs = VFSTOMQFS(ap->a_dvp->v_mount);
- struct mqfs_node *pn;
- int error;
-
- if (ap->a_vp->v_type == VDIR)
- return (EPERM);
- pn = VTON(ap->a_vp);
- sx_xlock(&mqfs->mi_lock);
- error = do_unlink(pn, ap->a_cnp->cn_cred);
- sx_xunlock(&mqfs->mi_lock);
- return (error);
-}
-
-#if 0
-struct vop_inactive_args {
- struct vnode *a_vp;
- struct thread *a_td;
-};
-#endif
-
-static int
-mqfs_inactive(struct vop_inactive_args *ap)
-{
- struct mqfs_node *pn = VTON(ap->a_vp);
-
- if (pn->mn_deleted)
- vrecycle(ap->a_vp);
- return (0);
-}
-
-#if 0
-struct vop_reclaim_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
-};
-#endif
-
-static int
-mqfs_reclaim(struct vop_reclaim_args *ap)
-{
- struct mqfs_info *mqfs = VFSTOMQFS(ap->a_vp->v_mount);
- struct vnode *vp = ap->a_vp;
- struct mqfs_node *pn;
- struct mqfs_vdata *vd;
-
- vd = vp->v_data;
- pn = vd->mv_node;
- sx_xlock(&mqfs->mi_lock);
- vp->v_data = NULL;
- LIST_REMOVE(vd, mv_link);
- mqnode_release(pn);
- sx_xunlock(&mqfs->mi_lock);
- uma_zfree(mvdata_zone, vd);
- return (0);
-}
-
-#if 0
-struct vop_open_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- int a_mode;
- struct ucred *a_cred;
- struct thread *a_td;
- struct file *a_fp;
-};
-#endif
-
-static int
-mqfs_open(struct vop_open_args *ap)
-{
- return (0);
-}
-
-#if 0
-struct vop_close_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- int a_fflag;
- struct ucred *a_cred;
- struct thread *a_td;
-};
-#endif
-
-static int
-mqfs_close(struct vop_close_args *ap)
-{
- return (0);
-}
-
-#if 0
-struct vop_access_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- accmode_t a_accmode;
- struct ucred *a_cred;
- struct thread *a_td;
-};
-#endif
-
-/*
- * Verify permissions
- */
-static int
-mqfs_access(struct vop_access_args *ap)
-{
- struct vnode *vp = ap->a_vp;
- struct vattr vattr;
- int error;
-
- error = VOP_GETATTR(vp, &vattr, ap->a_cred);
- if (error)
- return (error);
- error = vaccess(vp->v_type, vattr.va_mode, vattr.va_uid, vattr.va_gid,
- ap->a_accmode, ap->a_cred);
- return (error);
-}
-
-#if 0
-struct vop_getattr_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- struct vattr *a_vap;
- struct ucred *a_cred;
-};
-#endif
-
-/*
- * Get file attributes
- */
-static int
-mqfs_getattr(struct vop_getattr_args *ap)
-{
- struct vnode *vp = ap->a_vp;
- struct mqfs_node *pn = VTON(vp);
- struct vattr *vap = ap->a_vap;
- int error = 0;
-
- vap->va_type = vp->v_type;
- vap->va_mode = pn->mn_mode;
- vap->va_nlink = 1;
- vap->va_uid = pn->mn_uid;
- vap->va_gid = pn->mn_gid;
- vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
- vap->va_fileid = pn->mn_fileno;
- vap->va_size = 0;
- vap->va_blocksize = PAGE_SIZE;
- vap->va_bytes = vap->va_size = 0;
- vap->va_atime = pn->mn_atime;
- vap->va_mtime = pn->mn_mtime;
- vap->va_ctime = pn->mn_ctime;
- vap->va_birthtime = pn->mn_birth;
- vap->va_gen = 0;
- vap->va_flags = 0;
- vap->va_rdev = NODEV;
- vap->va_bytes = 0;
- vap->va_filerev = 0;
- return (error);
-}
-
-#if 0
-struct vop_setattr_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- struct vattr *a_vap;
- struct ucred *a_cred;
-};
-#endif
-/*
- * Set attributes
- */
-static int
-mqfs_setattr(struct vop_setattr_args *ap)
-{
- struct mqfs_node *pn;
- struct vattr *vap;
- struct vnode *vp;
- struct thread *td;
- int c, error;
- uid_t uid;
- gid_t gid;
-
- td = curthread;
- vap = ap->a_vap;
- vp = ap->a_vp;
- if (vap->va_type != VNON ||
- vap->va_nlink != VNOVAL ||
- vap->va_fsid != VNOVAL ||
- vap->va_fileid != VNOVAL ||
- vap->va_blocksize != VNOVAL ||
- (vap->va_flags != VNOVAL && vap->va_flags != 0) ||
- vap->va_rdev != VNOVAL ||
- (int)vap->va_bytes != VNOVAL ||
- vap->va_gen != VNOVAL) {
- return (EINVAL);
- }
-
- pn = VTON(vp);
-
- error = c = 0;
- if (vap->va_uid == (uid_t)VNOVAL)
- uid = pn->mn_uid;
- else
- uid = vap->va_uid;
- if (vap->va_gid == (gid_t)VNOVAL)
- gid = pn->mn_gid;
- else
- gid = vap->va_gid;
-
- if (uid != pn->mn_uid || gid != pn->mn_gid) {
- /*
- * To modify the ownership of a file, must possess VADMIN
- * for that file.
- */
- if ((error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td)))
- return (error);
-
- /*
- * XXXRW: Why is there a privilege check here: shouldn't the
- * check in VOP_ACCESS() be enough? Also, are the group bits
- * below definitely right?
- */
- if ((ap->a_cred->cr_uid != pn->mn_uid || uid != pn->mn_uid ||
- (gid != pn->mn_gid && !groupmember(gid, ap->a_cred))) &&
- (error = priv_check(td, PRIV_MQ_ADMIN)) != 0)
- return (error);
- pn->mn_uid = uid;
- pn->mn_gid = gid;
- c = 1;
- }
-
- if (vap->va_mode != (mode_t)VNOVAL) {
- if (ap->a_cred->cr_uid != pn->mn_uid &&
- (error = priv_check(td, PRIV_MQ_ADMIN)))
- return (error);
- pn->mn_mode = vap->va_mode;
- c = 1;
- }
-
- if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
- /* See the comment in ufs_vnops::ufs_setattr(). */
- if ((error = VOP_ACCESS(vp, VADMIN, ap->a_cred, td)) &&
- ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
- (error = VOP_ACCESS(vp, VWRITE, ap->a_cred, td))))
- return (error);
- if (vap->va_atime.tv_sec != VNOVAL) {
- pn->mn_atime = vap->va_atime;
- }
- if (vap->va_mtime.tv_sec != VNOVAL) {
- pn->mn_mtime = vap->va_mtime;
- }
- c = 1;
- }
- if (c) {
- vfs_timestamp(&pn->mn_ctime);
- }
- return (0);
-}
-
-#if 0
-struct vop_read_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- struct uio *a_uio;
- int a_ioflag;
- struct ucred *a_cred;
-};
-#endif
-
-/*
- * Read from a file
- */
-static int
-mqfs_read(struct vop_read_args *ap)
-{
- char buf[80];
- struct vnode *vp = ap->a_vp;
- struct uio *uio = ap->a_uio;
- struct mqueue *mq;
- int len, error;
-
- if (vp->v_type != VREG)
- return (EINVAL);
-
- mq = VTOMQ(vp);
- snprintf(buf, sizeof(buf),
- "QSIZE:%-10ld MAXMSG:%-10ld CURMSG:%-10ld MSGSIZE:%-10ld\n",
- mq->mq_totalbytes,
- mq->mq_maxmsg,
- mq->mq_curmsgs,
- mq->mq_msgsize);
- buf[sizeof(buf)-1] = '\0';
- len = strlen(buf);
- error = uiomove_frombuf(buf, len, uio);
- return (error);
-}
-
-#if 0
-struct vop_readdir_args {
- struct vop_generic_args a_gen;
- struct vnode *a_vp;
- struct uio *a_uio;
- struct ucred *a_cred;
- int *a_eofflag;
- int *a_ncookies;
- uint64_t **a_cookies;
-};
-#endif
-
-/*
- * Return directory entries.
- */
-static int
-mqfs_readdir(struct vop_readdir_args *ap)
-{
- struct vnode *vp;
- struct mqfs_info *mi;
- struct mqfs_node *pd;
- struct mqfs_node *pn;
- struct dirent entry;
- struct uio *uio;
- const void *pr_root;
- int *tmp_ncookies = NULL;
- off_t offset;
- int error, i;
-
- vp = ap->a_vp;
- mi = VFSTOMQFS(vp->v_mount);
- pd = VTON(vp);
- uio = ap->a_uio;
-
- if (vp->v_type != VDIR)
- return (ENOTDIR);
-
- if (uio->uio_offset < 0)
- return (EINVAL);
-
- if (ap->a_ncookies != NULL) {
- tmp_ncookies = ap->a_ncookies;
- *ap->a_ncookies = 0;
- ap->a_ncookies = NULL;
- }
-
- error = 0;
- offset = 0;
-
- pr_root = ap->a_cred->cr_prison->pr_root;
- sx_xlock(&mi->mi_lock);
-
- LIST_FOREACH(pn, &pd->mn_children, mn_sibling) {
- entry.d_reclen = sizeof(entry);
-
- /*
- * Only show names within the same prison root directory
- * (or not associated with a prison, e.g. "." and "..").
- */
- if (pn->mn_pr_root != NULL && pn->mn_pr_root != pr_root)
- continue;
- if (!pn->mn_fileno)
- mqfs_fileno_alloc(mi, pn);
- entry.d_fileno = pn->mn_fileno;
- entry.d_off = offset + entry.d_reclen;
- for (i = 0; i < MQFS_NAMELEN - 1 && pn->mn_name[i] != '\0'; ++i)
- entry.d_name[i] = pn->mn_name[i];
- entry.d_namlen = i;
- switch (pn->mn_type) {
- case mqfstype_root:
- case mqfstype_dir:
- case mqfstype_this:
- case mqfstype_parent:
- entry.d_type = DT_DIR;
- break;
- case mqfstype_file:
- entry.d_type = DT_REG;
- break;
- case mqfstype_symlink:
- entry.d_type = DT_LNK;
- break;
- default:
- panic("%s has unexpected node type: %d", pn->mn_name,
- pn->mn_type);
- }
- dirent_terminate(&entry);
- if (entry.d_reclen > uio->uio_resid)
- break;
- if (offset >= uio->uio_offset) {
- error = vfs_read_dirent(ap, &entry, offset);
- if (error)
- break;
- }
- offset += entry.d_reclen;
- }
- sx_xunlock(&mi->mi_lock);
-
- uio->uio_offset = offset;
-
- if (tmp_ncookies != NULL)
- ap->a_ncookies = tmp_ncookies;
-
- return (error);
-}
-
-#ifdef notyet
-
-#if 0
-struct vop_mkdir_args {
- struct vnode *a_dvp;
- struvt vnode **a_vpp;
- struvt componentname *a_cnp;
- struct vattr *a_vap;
-};
-#endif
-
-/*
- * Create a directory.
- */
-static int
-mqfs_mkdir(struct vop_mkdir_args *ap)
-{
- struct mqfs_info *mqfs = VFSTOMQFS(ap->a_dvp->v_mount);
- struct componentname *cnp = ap->a_cnp;
- struct mqfs_node *pd = VTON(ap->a_dvp);
- struct mqfs_node *pn;
- int error;
-
- if (pd->mn_type != mqfstype_root && pd->mn_type != mqfstype_dir)
- return (ENOTDIR);
- sx_xlock(&mqfs->mi_lock);
- pn = mqfs_create_dir(pd, cnp->cn_nameptr, cnp->cn_namelen,
- ap->a_vap->cn_cred, ap->a_vap->va_mode);
- if (pn != NULL)
- mqnode_addref(pn);
- sx_xunlock(&mqfs->mi_lock);
- if (pn == NULL) {
- error = ENOSPC;
- } else {
- error = mqfs_allocv(ap->a_dvp->v_mount, ap->a_vpp, pn);
- mqnode_release(pn);
- }
- return (error);
-}
-
-#if 0
-struct vop_rmdir_args {
- struct vnode *a_dvp;
- struct vnode *a_vp;
- struct componentname *a_cnp;
-};
-#endif
-
-/*
- * Remove a directory.
- */
-static int
-mqfs_rmdir(struct vop_rmdir_args *ap)
-{
- struct mqfs_info *mqfs = VFSTOMQFS(ap->a_dvp->v_mount);
- struct mqfs_node *pn = VTON(ap->a_vp);
- struct mqfs_node *pt;
-
- if (pn->mn_type != mqfstype_dir)
- return (ENOTDIR);
-
- sx_xlock(&mqfs->mi_lock);
- if (pn->mn_deleted) {
- sx_xunlock(&mqfs->mi_lock);
- return (ENOENT);
- }
-
- pt = LIST_FIRST(&pn->mn_children);
- pt = LIST_NEXT(pt, mn_sibling);
- pt = LIST_NEXT(pt, mn_sibling);
- if (pt != NULL) {
- sx_xunlock(&mqfs->mi_lock);
- return (ENOTEMPTY);
- }
- pt = pn->mn_parent;
- pn->mn_parent = NULL;
- pn->mn_deleted = 1;
- LIST_REMOVE(pn, mn_sibling);
- mqnode_release(pn);
- mqnode_release(pt);
- sx_xunlock(&mqfs->mi_lock);
- cache_purge(ap->a_vp);
- return (0);
-}
-
-#endif /* notyet */
-
/*
* See if this prison root is obsolete, and clean up associated queues if it is.
*/
@@ -1665,7 +688,7 @@
int error;
error = copyout(((char *)msg) + sizeof(*msg), msg_ptr,
- msg->msg_size);
+ msg->msg_size);
if (error == 0 && msg_prio != NULL)
error = copyout(&msg->msg_prio, msg_prio, sizeof(int));
return (error);
@@ -2698,44 +1721,6 @@
.fo_flags = DFLAG_PASSABLE,
};
-static struct vop_vector mqfs_vnodeops = {
- .vop_default = &default_vnodeops,
- .vop_access = mqfs_access,
- .vop_cachedlookup = mqfs_lookup,
- .vop_lookup = vfs_cache_lookup,
- .vop_reclaim = mqfs_reclaim,
- .vop_create = mqfs_create,
- .vop_remove = mqfs_remove,
- .vop_inactive = mqfs_inactive,
- .vop_open = mqfs_open,
- .vop_close = mqfs_close,
- .vop_getattr = mqfs_getattr,
- .vop_setattr = mqfs_setattr,
- .vop_read = mqfs_read,
- .vop_write = VOP_EOPNOTSUPP,
- .vop_readdir = mqfs_readdir,
- .vop_mkdir = VOP_EOPNOTSUPP,
- .vop_rmdir = VOP_EOPNOTSUPP
-};
-VFS_VOP_VECTOR_REGISTER(mqfs_vnodeops);
-
-static struct vfsops mqfs_vfsops = {
- .vfs_init = mqfs_init,
- .vfs_uninit = mqfs_uninit,
- .vfs_mount = mqfs_mount,
- .vfs_unmount = mqfs_unmount,
- .vfs_root = mqfs_root,
- .vfs_statfs = mqfs_statfs,
-};
-
-static struct vfsconf mqueuefs_vfsconf = {
- .vfc_version = VFS_VERSION,
- .vfc_name = "mqueuefs",
- .vfc_vfsops = &mqfs_vfsops,
- .vfc_typenum = -1,
- .vfc_flags = VFCF_SYNTHETIC
-};
-
static struct syscall_helper_data mq_syscalls[] = {
SYSCALL_INIT_HELPER(kmq_open),
SYSCALL_INIT_HELPER_F(kmq_setattr, SYF_CAPENABLED),
@@ -2897,6 +1882,7 @@
{
int error;
+ mqfs_init();
error = syscall_helper_register(mq_syscalls, SY_THR_STATIC_KLD);
if (error != 0)
return (error);
@@ -2912,10 +1898,15 @@
mqunload(void)
{
+ if (!unloadable)
+ return (EOPNOTSUPP);
+
#ifdef COMPAT_FREEBSD32
syscall32_helper_unregister(mq32_syscalls);
#endif
syscall_helper_unregister(mq_syscalls);
+
+ mqfs_uninit();
return (0);
}
@@ -2924,10 +1915,6 @@
{
int error = 0;
- error = vfs_modevent(module, cmd, arg);
- if (error != 0)
- return (error);
-
switch (cmd) {
case MOD_LOAD:
error = mqinit();
@@ -2946,7 +1933,7 @@
static moduledata_t mqueuefs_mod = {
"mqueuefs",
mq_modload,
- &mqueuefs_vfsconf
+ NULL
};
DECLARE_MODULE(mqueuefs, mqueuefs_mod, SI_SUB_VFS, SI_ORDER_MIDDLE);
MODULE_VERSION(mqueuefs, 1);

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