diff options
author | phk <phk@FreeBSD.org> | 2000-08-24 15:36:55 +0000 |
---|---|---|
committer | phk <phk@FreeBSD.org> | 2000-08-24 15:36:55 +0000 |
commit | ec761116e25ef0a9e43ec5670c7c6565a4848a0b (patch) | |
tree | 526f85e393c165d9f02f974b9d8214c9b1605bc4 /sys/fs | |
parent | f234fce050713400cc0e6419a59b0f6df01a2501 (diff) | |
download | FreeBSD-src-ec761116e25ef0a9e43ec5670c7c6565a4848a0b.zip FreeBSD-src-ec761116e25ef0a9e43ec5670c7c6565a4848a0b.tar.gz |
Fix panic when removing open device (found by bp@)
Implement subdirs.
Build the full "devicename" for cloning functions.
Fix panic when deleted device goes away.
Collaps devfs_dir and devfs_dirent structures.
Add proper cloning to the /dev/fd* "device-"driver.
Fix a bug in make_dev_alias() handling which made aliases appear
multiple times.
Use devfs_clone to implement getdiskbyname()
Make specfs maintain the stat(2) timestamps per dev_t
Diffstat (limited to 'sys/fs')
-rw-r--r-- | sys/fs/devfs/devfs.h | 25 | ||||
-rw-r--r-- | sys/fs/devfs/devfs_devs.c | 79 | ||||
-rw-r--r-- | sys/fs/devfs/devfs_vfsops.c | 25 | ||||
-rw-r--r-- | sys/fs/devfs/devfs_vnops.c | 192 | ||||
-rw-r--r-- | sys/fs/specfs/spec_vnops.c | 14 |
5 files changed, 204 insertions, 131 deletions
diff --git a/sys/fs/devfs/devfs.h b/sys/fs/devfs/devfs.h index 00a34b1..e144a4b 100644 --- a/sys/fs/devfs/devfs.h +++ b/sys/fs/devfs/devfs.h @@ -42,15 +42,17 @@ MALLOC_DECLARE(M_DEVFS); -struct devfs_dir { - TAILQ_HEAD(, devfs_dirent) dd_list; -}; - struct devfs_dirent { int de_inode; + int de_flags; +#define DE_ORPHAN 0x1 +#define DE_DOT 0x2 +#define DE_DOTDOT 0x4 struct dirent *de_dirent; TAILQ_ENTRY(devfs_dirent) de_list; - struct devfs_dir *de_dir; + TAILQ_HEAD(, devfs_dirent) de_dlist; + struct devfs_dirent *de_dir; + int de_links; mode_t de_mode; uid_t de_uid; gid_t de_gid; @@ -67,10 +69,11 @@ struct devfs_node { struct devfs_mount { struct vnode *dm_root; /* Root node */ - struct devfs_dir *dm_rootdir; - struct devfs_dir *dm_basedir; + struct devfs_dirent *dm_rootdir; + struct devfs_dirent *dm_basedir; unsigned dm_generation; struct devfs_dirent *dm_dirent[NDEVINO]; +#define DE_DELETED ((struct devfs_dirent *)&devfs_inot[0]) int dm_inode; }; @@ -79,15 +82,17 @@ extern dev_t devfs_inot[NDEVINO]; extern int devfs_nino; extern unsigned devfs_generation; + #define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data)) extern vop_t **devfs_vnodeop_p; extern vop_t **devfs_specop_p; + int devfs_populate __P((struct devfs_mount *dm)); -struct devfs_dir * devfs_vmkdir __P((void)); struct devfs_dirent * devfs_newdirent __P((char *name, int namelen)); -void devfs_purge __P((struct devfs_dir *dd)); -void devfs_delete __P((struct devfs_dir *dd, struct devfs_dirent *de)); +void devfs_purge __P((struct devfs_dirent *dd)); +struct devfs_dirent * devfs_vmkdir __P((char *name, int namelen, + struct devfs_dirent *dotdot)); #endif /* DEVFS_INTERN */ typedef void (*devfs_clone_fn) __P((void *arg, char *name, int namelen, dev_t *result)); diff --git a/sys/fs/devfs/devfs_devs.c b/sys/fs/devfs/devfs_devs.c index 10be9da..8b301c9 100644 --- a/sys/fs/devfs/devfs_devs.c +++ b/sys/fs/devfs/devfs_devs.c @@ -57,29 +57,46 @@ devfs_newdirent(char *name, int namelen) de->de_dirent->d_reclen = GENERIC_DIRSIZ(&d); bcopy(name, de->de_dirent->d_name, namelen + 1); nanotime(&de->de_ctime); + de->de_mtime = de->de_atime = de->de_ctime; + de->de_links = 1; return (de); } -struct devfs_dir * -devfs_vmkdir(void) +struct devfs_dirent * +devfs_vmkdir(char *name, int namelen, struct devfs_dirent *dotdot) { - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; - MALLOC(dd, struct devfs_dir *, sizeof(*dd), M_DEVFS, M_WAITOK); - bzero(dd, sizeof(*dd)); - TAILQ_INIT(&dd->dd_list); + dd = devfs_newdirent(name, namelen); + + TAILQ_INIT(&dd->de_dlist); + + dd->de_dirent->d_type = DT_DIR; + dd->de_mode = 0755; + dd->de_links = 2; + dd->de_dir = dd; de = devfs_newdirent(".", 1); de->de_dirent->d_type = DT_DIR; - TAILQ_INSERT_TAIL(&dd->dd_list, de, de_list); - de = TAILQ_FIRST(&dd->dd_list); - de->de_mode = 0755; + de->de_dir = dd; + de->de_flags |= DE_DOT; + TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list); + + de = devfs_newdirent("..", 2); + de->de_dirent->d_type = DT_DIR; + if (dotdot == NULL) + de->de_dir = dd; + else + de->de_dir = dotdot; + de->de_flags |= DE_DOTDOT; + TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list); + return (dd); } -void -devfs_delete(struct devfs_dir *dd, struct devfs_dirent *de) +static void +devfs_delete(struct devfs_dirent *dd, struct devfs_dirent *de) { if (de->de_symlink) { @@ -90,17 +107,17 @@ devfs_delete(struct devfs_dir *dd, struct devfs_dirent *de) de->de_vnode->v_data = NULL; vdrop(de->de_vnode); } - TAILQ_REMOVE(&dd->dd_list, de, de_list); + TAILQ_REMOVE(&dd->de_dlist, de, de_list); FREE(de, M_DEVFS); } void -devfs_purge(struct devfs_dir *dd) +devfs_purge(struct devfs_dirent *dd) { struct devfs_dirent *de; for (;;) { - de = TAILQ_FIRST(&dd->dd_list); + de = TAILQ_FIRST(&dd->de_dlist); if (de == NULL) break; devfs_delete(dd, de); @@ -114,7 +131,7 @@ devfs_populate(struct devfs_mount *dm) { int i, j; dev_t dev, pdev; - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; char *q, *s; @@ -123,13 +140,14 @@ devfs_populate(struct devfs_mount *dm) for (i = 0; i < NDEVINO; i++) { dev = devfs_inot[i]; de = dm->dm_dirent[i]; + if (dev == NULL && de == DE_DELETED) { + dm->dm_dirent[i] = NULL; + continue; + } if (dev == NULL && de != NULL) { -#if 0 - printf("Del ino%d %s\n", i, de->de_dirent->d_name); -#endif dd = de->de_dir; dm->dm_dirent[i] = NULL; - TAILQ_REMOVE(&dd->dd_list, de, de_list); + TAILQ_REMOVE(&dd->de_dlist, de, de_list); if (de->de_vnode) { de->de_vnode->v_data = NULL; vdrop(de->de_vnode); @@ -143,17 +161,32 @@ devfs_populate(struct devfs_mount *dm) continue; dd = dm->dm_basedir; s = dev->si_name; + nextdir: for (q = s; *q != '/' && *q != '\0'; q++) continue; if (*q == '/') { - continue; + TAILQ_FOREACH(de, &dd->de_dlist, de_list) { + if (de->de_dirent->d_namlen != q - s) + continue; + if (bcmp(de->de_dirent->d_name, s, q - s)) + continue; + goto fdir; + } + de = devfs_vmkdir(s, q - s, dd); + de->de_inode = dm->dm_inode++; + TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list); + dd->de_links++; + fdir: + s = q + 1; + dd = de; + goto nextdir; } de = devfs_newdirent(s, q - s); if (dev->si_flags & SI_ALIAS) { de->de_inode = dm->dm_inode++; de->de_uid = 0; de->de_gid = 0; - de->de_mode = 0642; + de->de_mode = 0666; de->de_dirent->d_type = DT_LNK; pdev = dev->si_drv1; j = strlen(pdev->si_name) + 1; @@ -165,9 +198,9 @@ devfs_populate(struct devfs_mount *dm) de->de_gid = dev->si_gid; de->de_mode = dev->si_mode; de->de_dirent->d_type = DT_CHR; - dm->dm_dirent[i] = de; } - TAILQ_INSERT_TAIL(&dd->dd_list, de, de_list); + dm->dm_dirent[i] = de; + TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list); #if 0 printf("Add ino%d %s\n", i, dev->si_name); #endif diff --git a/sys/fs/devfs/devfs_vfsops.c b/sys/fs/devfs/devfs_vfsops.c index 27b1fd7..b5ccac4 100644 --- a/sys/fs/devfs/devfs_vfsops.c +++ b/sys/fs/devfs/devfs_vfsops.c @@ -97,29 +97,12 @@ devfs_mount(mp, path, data, ndp, p) fmp->dm_inode = NDEVINO; fmp->dm_root = rvp; - fmp->dm_rootdir = devfs_vmkdir(); + + fmp->dm_rootdir = devfs_vmkdir("(root)", 6, NULL); + fmp->dm_rootdir->de_inode = 2; rvp->v_data = fmp->dm_rootdir; - TAILQ_FIRST(&fmp->dm_rootdir->dd_list)->de_vnode = rvp; - TAILQ_FIRST(&fmp->dm_rootdir->dd_list)->de_inode = 2; - -#ifdef DEVFS_DEVBASE - { - struct devfs_dirent *de; - - fmp->dm_basedir = devfs_vmkdir(); - de = devfs_newdirent("dev", 3); - de->de_inode = fmp->dm_inode++; - de->de_dir = fmp->dm_basedir; - TAILQ_FIRST(&de->de_dir->dd_list)->de_inode = de->de_inode; - de->de_uid = 0; - de->de_gid = 0; - de->de_mode = 0755; - de->de_dirent->d_type = DT_DIR; - TAILQ_INSERT_TAIL(&fmp->dm_rootdir->dd_list, de, de_list); - } -#else + fmp->dm_basedir = fmp->dm_rootdir; -#endif if (path != NULL) { (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size); diff --git a/sys/fs/devfs/devfs_vnops.c b/sys/fs/devfs/devfs_vnops.c index 496eba5..432f83a 100644 --- a/sys/fs/devfs/devfs_vnops.c +++ b/sys/fs/devfs/devfs_vnops.c @@ -93,18 +93,14 @@ loop: vp->v_type = VCHR; vp = addaliasu(vp, devfs_inot[de->de_inode]->si_udev); vp->v_op = devfs_specop_p; - vp->v_data = de; } else if (de->de_dirent->d_type == DT_DIR) { vp->v_type = VDIR; - vp->v_data = de->de_dir; - TAILQ_FIRST(&de->de_dir->dd_list)->de_vnode = vp; } else if (de->de_dirent->d_type == DT_LNK) { vp->v_type = VLNK; - vp->v_data = de; } else { vp->v_type = VBAD; - vp->v_data = de; } + vp->v_data = de; de->de_vnode = vp; vhold(vp); *vpp = vp; @@ -127,14 +123,21 @@ devfs_lookup(ap) struct vnode *dvp = ap->a_dvp; char *pname = cnp->cn_nameptr; struct proc *p = cnp->cn_proc; - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; - struct devfs_mount *fmp; + struct devfs_mount *dmp; dev_t cdev; - int error, cloned; + int error, cloned, i; + char specname[SPECNAMELEN + 1]; *vpp = NULLVP; +#if 0 + error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc); + if (error) + return (error); +#endif + VOP_UNLOCK(dvp, 0, p); if (cnp->cn_namelen == 1 && *pname == '.') { *vpp = dvp; @@ -145,12 +148,12 @@ devfs_lookup(ap) cloned = 0; - fmp = (struct devfs_mount *)dvp->v_mount->mnt_data; + dmp = VFSTODEVFS(dvp->v_mount); again: - devfs_populate(fmp); + devfs_populate(dmp); dd = dvp->v_data; - TAILQ_FOREACH(de, &dd->dd_list, de_list) { + TAILQ_FOREACH(de, &dd->de_dlist, de_list) { if (cnp->cn_namelen != de->de_dirent->d_namlen) continue; if (bcmp(cnp->cn_nameptr, de->de_dirent->d_name, de->de_dirent->d_namlen) != 0) @@ -159,11 +162,43 @@ again: } if (!cloned) { - /* OK, we didn't have that one, so lets try to create it on the fly... */ + /* + * OK, we didn't have an entry for the name we were asked for + * so we try to see if anybody can create it on demand. + * We need to construct the full "devname" for this device + * relative to "basedir" or the clone functions would not + * be able to tell "/dev/foo" from "/dev/bar/foo" + */ + i = SPECNAMELEN; + specname[i] = '\0'; + i -= cnp->cn_namelen; + if (i < 0) + goto noclone; + bcopy(cnp->cn_nameptr, specname + i, cnp->cn_namelen); + de = dd; + while (de != dmp->dm_basedir) { + i--; + if (i < 0) + goto noclone; + specname[i] = '/'; + i -= de->de_dirent->d_namlen; + if (i < 0) + goto noclone; + bcopy(de->de_dirent->d_name, specname + i, + de->de_dirent->d_namlen); + de = TAILQ_FIRST(&de->de_dlist); /* "." */ + de = TAILQ_NEXT(de, de_list); /* ".." */ + de = de->de_dir; + } + +#if 0 + printf("Finished specname: %d \"%s\"\n", i, specname + i); +#endif cdev = NODEV; - EVENTHANDLER_INVOKE(devfs_clone, cnp->cn_nameptr, cnp->cn_namelen, &cdev); + EVENTHANDLER_INVOKE(devfs_clone, specname + i, + strlen(specname + i), &cdev); #if 0 - printf("cloned %s -> %p %s\n", cnp->cn_nameptr, cdev, + printf("cloned %s -> %p %s\n", specname + i, cdev, cdev == NODEV ? "NODEV" : cdev->si_name); #endif if (cdev != NODEV) { @@ -172,6 +207,7 @@ again: } } +noclone: /* No luck, too bad. */ if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) && @@ -221,14 +257,10 @@ devfs_access(ap) { struct vnode *vp = ap->a_vp; struct devfs_dirent *de; - struct devfs_dir *dd; - if (vp->v_type == VDIR) { - dd = vp->v_data; - de = TAILQ_FIRST(&dd->dd_list); - } else { - de = vp->v_data; - } + de = vp->v_data; + if (vp->v_type == VDIR) + de = de->de_dir; return (vaccess(vp->v_type, de->de_mode, de->de_uid, de->de_gid, ap->a_mode, ap->a_cred)); @@ -247,14 +279,11 @@ devfs_getattr(ap) struct vattr *vap = ap->a_vap; int error = 0; struct devfs_dirent *de; - struct devfs_dir *dd; + dev_t dev; - if (vp->v_type == VDIR) { - dd = vp->v_data; - de = TAILQ_FIRST(&dd->dd_list); - } else { - de = vp->v_data; - } + de = vp->v_data; + if (vp->v_type == VDIR) + de = de->de_dir; bzero((caddr_t) vap, sizeof(*vap)); vattr_null(vap); vap->va_uid = de->de_uid; @@ -262,28 +291,23 @@ devfs_getattr(ap) vap->va_mode = de->de_mode; vap->va_size = 0; vap->va_blocksize = DEV_BSIZE; - vap->va_atime = de->de_atime; - vap->va_mtime = de->de_mtime; - vap->va_ctime = de->de_ctime; + if (vp->v_type != VCHR) { + vap->va_atime = de->de_atime; + vap->va_mtime = de->de_mtime; + vap->va_ctime = de->de_ctime; + } else { + dev = vp->v_rdev; + vap->va_atime = dev->si_atime; + vap->va_mtime = dev->si_mtime; + vap->va_ctime = dev->si_ctime; + } vap->va_gen = 0; vap->va_flags = 0; vap->va_rdev = 0; vap->va_bytes = 0; - vap->va_nlink = 1; + vap->va_nlink = de->de_links; vap->va_fileid = de->de_inode; -#if 0 - if (vp->v_flag & VROOT) { -#ifdef DEBUG - printf("devfs_getattr: stat rootdir\n"); -#endif - vap->va_type = VDIR; - vap->va_nlink = 2; - vap->va_fileid = 2; - vap->va_size = DEV_BSIZE; - } else -#endif - if (de->de_dirent->d_type == DT_DIR) { vap->va_type = VDIR; } else if (de->de_dirent->d_type == DT_LNK) { @@ -309,35 +333,35 @@ devfs_setattr(ap) struct proc *a_p; } */ *ap; { - struct devfs_dir *dd; struct devfs_dirent *de; + int c; - if (ap->a_vp->v_type == VDIR) { - dd = ap->a_vp->v_data; - de = TAILQ_FIRST(&dd->dd_list); - } else { - de = ap->a_vp->v_data; - } + de = ap->a_vp->v_data; + if (ap->a_vp->v_type == VDIR) + de = de->de_dir; + c = 0; if (ap->a_vap->va_flags != VNOVAL) return (EOPNOTSUPP); - if (ap->a_vap->va_uid != (uid_t)VNOVAL) + if (ap->a_vap->va_uid != (uid_t)VNOVAL) { de->de_uid = ap->a_vap->va_uid; - if (ap->a_vap->va_gid != (gid_t)VNOVAL) + c = 1; + } + if (ap->a_vap->va_gid != (gid_t)VNOVAL) { de->de_gid = ap->a_vap->va_gid; - if (ap->a_vap->va_mode != (mode_t)VNOVAL) + c = 1; + } + if (ap->a_vap->va_mode != (mode_t)VNOVAL) { de->de_mode = ap->a_vap->va_mode; + c = 1; + } if (ap->a_vap->va_atime.tv_sec != VNOVAL) de->de_atime = ap->a_vap->va_atime; if (ap->a_vap->va_mtime.tv_sec != VNOVAL) de->de_mtime = ap->a_vap->va_mtime; - /* - * Silently ignore attribute changes. - * This allows for open with truncate to have no - * effect until some data is written. I want to - * do it this way because all writes are atomic. - */ + if (c) + getnanotime(&de->de_ctime); return (0); } @@ -355,26 +379,33 @@ devfs_readdir(ap) int error, i; struct uio *uio = ap->a_uio; struct dirent *dp; - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; + struct devfs_mount *dmp; off_t off; if (ap->a_vp->v_type != VDIR) return (ENOTDIR); + dmp = VFSTODEVFS(ap->a_vp->v_mount); + devfs_populate(dmp); i = (u_int)off / UIO_MX; error = 0; - dd = ap->a_vp->v_data; - de = TAILQ_FIRST(&dd->dd_list); + de = ap->a_vp->v_data; + dd = TAILQ_FIRST(&de->de_dlist); off = 0; - while (uio->uio_resid >= UIO_MX && de != NULL) { - dp = de->de_dirent; + while (uio->uio_resid >= UIO_MX && dd != NULL) { + if (dd->de_dirent->d_type == DT_DIR) + de = dd->de_dir; + else + de = dd; + dp = dd->de_dirent; dp->d_fileno = de->de_inode; if (off >= uio->uio_offset) if ((error = uiomove((caddr_t)dp, dp->d_reclen, uio)) != 0) break; off += dp->d_reclen; - de = TAILQ_NEXT(de, de_list); + dd = TAILQ_NEXT(dd, de_list); } uio->uio_offset = off; @@ -405,7 +436,14 @@ devfs_reclaim(ap) } */ *ap; { struct vnode *vp = ap->a_vp; + struct devfs_dirent *de; + de = vp->v_data; + if (de != NULL && de->de_flags & DE_ORPHAN) { + if (de->de_symlink) + FREE(de->de_symlink, M_DEVFS); + FREE(de, M_DEVFS); + } vp->v_data = NULL; return (0); } @@ -419,12 +457,17 @@ devfs_remove(ap) } */ *ap; { struct vnode *vp = ap->a_vp; - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; + struct devfs_mount *dm = VFSTODEVFS(vp->v_mount); dd = ap->a_dvp->v_data; de = vp->v_data; - devfs_delete(dd, de); + de->de_flags |= DE_ORPHAN; + TAILQ_REMOVE(&dd->de_dlist, de, de_list); + if (de->de_inode < NDEVINO) + dm->dm_dirent[de->de_inode] = DE_DELETED; + vdrop(de->de_vnode); return (0); } @@ -444,7 +487,8 @@ devfs_revoke(ap) struct devfs_dirent *de; de = vp->v_data; - vdrop(de->de_vnode); + if (!(de->de_flags & DE_ORPHAN)) + vdrop(de->de_vnode); de->de_vnode = NULL; vop_revoke(ap); return (0); @@ -461,22 +505,22 @@ devfs_symlink(ap) } */ *ap; { int i; - struct devfs_dir *dd; + struct devfs_dirent *dd; struct devfs_dirent *de; - struct devfs_mount *fmp; + struct devfs_mount *dmp; - fmp = (struct devfs_mount *)ap->a_dvp->v_mount->mnt_data; + dmp = (struct devfs_mount *)ap->a_dvp->v_mount->mnt_data; dd = ap->a_dvp->v_data; de = devfs_newdirent(ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen); de->de_uid = 0; de->de_gid = 0; de->de_mode = 0642; - de->de_inode = fmp->dm_inode++; + de->de_inode = dmp->dm_inode++; de->de_dirent->d_type = DT_LNK; i = strlen(ap->a_target) + 1; MALLOC(de->de_symlink, char *, i, M_DEVFS, M_WAITOK); bcopy(ap->a_target, de->de_symlink, i); - TAILQ_INSERT_TAIL(&dd->dd_list, de, de_list); + TAILQ_INSERT_TAIL(&dd->de_dlist, de, de_list); devfs_allocv(de, ap->a_dvp->v_mount, ap->a_vpp, 0); VREF(*(ap->a_vpp)); return (0); diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c index f6bd853..f681cc8 100644 --- a/sys/fs/specfs/spec_vnops.c +++ b/sys/fs/specfs/spec_vnops.c @@ -246,19 +246,22 @@ spec_read(ap) struct proc *p; struct uio *uio; dev_t dev; - int error; + int error, resid; vp = ap->a_vp; dev = vp->v_rdev; uio = ap->a_uio; p = uio->uio_procp; + resid = uio->uio_resid; - if (uio->uio_resid == 0) + if (resid == 0) return (0); VOP_UNLOCK(vp, 0, p); error = (*devsw(dev)->d_read) (dev, uio, ap->a_ioflag); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); + if (uio->uio_resid != resid || (error == 0 && resid != 0)) + getnanotime(&dev->si_atime); return (error); } @@ -279,16 +282,21 @@ spec_write(ap) struct proc *p; struct uio *uio; dev_t dev; - int error; + int error, resid; vp = ap->a_vp; dev = vp->v_rdev; uio = ap->a_uio; p = uio->uio_procp; + resid = uio->uio_resid; VOP_UNLOCK(vp, 0, p); error = (*devsw(dev)->d_write) (dev, uio, ap->a_ioflag); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); + if (uio->uio_resid != resid || (error == 0 && resid != 0)) { + getnanotime(&dev->si_ctime); + dev->si_mtime = dev->si_ctime; + } return (error); } |