Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. =================================================================== RCS file: /ftp/cvs/cvsroot/src/sys/miscfs/kernfs/kernfs_vnops.c,v rcsdiff: /ftp/cvs/cvsroot/src/sys/miscfs/kernfs/kernfs_vnops.c,v: warning: Unknown phrases like `commitid ...;' are present. retrieving revision 1.17 retrieving revision 1.25 diff -u -p -r1.17 -r1.25 --- src/sys/miscfs/kernfs/kernfs_vnops.c 1994/01/05 11:05:12 1.17 +++ src/sys/miscfs/kernfs/kernfs_vnops.c 1994/06/15 17:52:32 1.25 @@ -1,7 +1,6 @@ /* - * Copyright (c) 1992 The Regents of the University of California - * Copyright (c) 1990, 1992 Jan-Simon Pendry - * All rights reserved. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. * * This code is derived from software donated to Berkeley by * Jan-Simon Pendry. @@ -34,75 +33,75 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * From: - * Id: kernfs_vnops.c,v 4.1 1994/01/02 14:41:30 jsp Exp - * - * $Id: kernfs_vnops.c,v 1.17 1994/01/05 11:05:12 cgd Exp $ + * from: @(#)kernfs_vnops.c 8.6 (Berkeley) 2/10/94 + * $Id: kernfs_vnops.c,v 1.25 1994/06/15 17:52:32 mycroft Exp $ */ /* - * Kernel parameter filesystem + * Kernel parameter filesystem (/kern) */ #include #include #include +#include #include #include #include -#include #include +#include +#include #include #include #include #include +#include #include -#include /* For readdir() XXX */ - #define KSTRING 256 /* Largest I/O available via this filesystem */ #define UIO_MX 32 +#define READ_MODE (S_IRUSR|S_IRGRP|S_IROTH) +#define WRITE_MODE (S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH) +#define DIR_MODE (S_IRUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) + struct kern_target { + u_char kt_type; + u_char kt_namlen; char *kt_name; void *kt_data; -#define KTT_NULL 1 -#define KTT_TIME 5 -#define KTT_INT 17 -#define KTT_STRING 31 -#define KTT_HOSTNAME 47 -#define KTT_AVENRUN 53 - int kt_tag; -#define KTM_RO 0 -#define KTM_RO_MODE \ - ((VREAD) | (VREAD >> 3) | (VREAD >> 6)) -#define KTM_RW 43 -#define KTM_RW_MODE \ - ((VWRITE) | KTM_RO_MODE) -#define KTM_DIR_MODE \ - ((VREAD|VEXEC) | ((VREAD|VEXEC) >> 3) | ((VREAD|VEXEC) >> 6)) - int kt_rw; - enum vtype kt_vtype; +#define KTT_NULL 1 +#define KTT_TIME 5 +#define KTT_INT 17 +#define KTT_STRING 31 +#define KTT_HOSTNAME 47 +#define KTT_AVENRUN 53 +#define KTT_DEVICE 71 + u_char kt_tag; + u_char kt_vtype; + mode_t kt_mode; } kern_targets[] = { /* NOTE: The name must be less than UIO_MX-16 chars in length */ - /* name data tag ro/rw */ - { ".", 0, KTT_NULL, KTM_RO, VDIR }, - { "copyright", copyright, KTT_STRING, KTM_RO, VREG }, - { "hostname", 0, KTT_HOSTNAME, KTM_RW, VREG }, - { "hz", &hz, KTT_INT, KTM_RO, VREG }, - { "loadavg", 0, KTT_AVENRUN, KTM_RO, VREG }, - { "physmem", &physmem, KTT_INT, KTM_RO, VREG }, +#define N(s) sizeof(s)-1, s + /* name data tag type ro/rw */ + { DT_DIR, N("."), 0, KTT_NULL, VDIR, DIR_MODE }, + { DT_DIR, N(".."), 0, KTT_NULL, VDIR, DIR_MODE }, + { DT_REG, N("boottime"), &boottime.tv_sec, KTT_INT, VREG, READ_MODE }, + { DT_REG, N("copyright"), copyright, KTT_STRING, VREG, READ_MODE }, + { DT_REG, N("hostname"), 0, KTT_HOSTNAME, VREG, WRITE_MODE }, + { DT_REG, N("hz"), &hz, KTT_INT, VREG, READ_MODE }, + { DT_REG, N("loadavg"), 0, KTT_AVENRUN, VREG, READ_MODE }, + { DT_REG, N("pagesize"), &cnt.v_page_size, KTT_INT, VREG, READ_MODE }, + { DT_REG, N("physmem"), &physmem, KTT_INT, VREG, READ_MODE }, #if 0 - { "root", 0, KTT_NULL, KTM_RO, VDIR }, + { DT_DIR, N("root"), 0, KTT_NULL, VDIR, DIR_MODE }, #endif - { "rootdev", 0, KTT_NULL, KTM_RO, VBLK }, -#ifdef notdef - { "rrootdev", 0, KTT_NULL, KTM_RO, VCHR }, -#endif - { "time", 0, KTT_TIME, KTM_RO, VREG }, - { "version", version, KTT_STRING, KTM_RO, VREG }, + { DT_BLK, N("rootdev"), &rootdev, KTT_DEVICE, VBLK, READ_MODE }, + { DT_CHR, N("rrootdev"), &rrootdev, KTT_DEVICE, VCHR, READ_MODE }, + { DT_REG, N("time"), 0, KTT_TIME, VREG, READ_MODE }, + { DT_REG, N("version"), version, KTT_STRING, VREG, READ_MODE }, +#undef N }; - static int nkern_targets = sizeof(kern_targets) / sizeof(kern_targets[0]); static int @@ -112,7 +111,6 @@ kernfs_xread(kt, buf, len, lenp) int len; int *lenp; { - int xlen; switch (kt->kt_tag) { case KTT_TIME: { @@ -153,15 +151,13 @@ kernfs_xread(kt, buf, len, lenp) } case KTT_AVENRUN: - sprintf(buf, "%d %d %d %d\n", - averunnable.ldavg[0], - averunnable.ldavg[1], - averunnable.ldavg[2], - averunnable.fscale); + sprintf(buf, "%ld %ld %ld %ld\n", + averunnable.ldavg[0], averunnable.ldavg[1], + averunnable.ldavg[2], averunnable.fscale); break; default: - return (EINVAL); + return (EIO); } *lenp = strlen(buf); @@ -174,132 +170,69 @@ kernfs_xwrite(kt, buf, len) char *buf; int len; { + switch (kt->kt_tag) { - case KTT_HOSTNAME: { + case KTT_HOSTNAME: if (buf[len-1] == '\n') --len; bcopy(buf, hostname, len); hostname[len] = '\0'; hostnamelen = len; return (0); - } default: return (EIO); } } -/* - * implement access checking. - * - * something very similar to this code is duplicated - * throughout the 4bsd kernel and should be moved - * into kern/vfs_subr.c sometime. - * - * actually, the check for super-user is slightly - * broken since it will allow read access to write-only - * objects. this doesn't cause any particular trouble - * but does mean that the i/o entry points need to check - * that the operation really does make sense. - */ -kernfs_access(vp, mode, cred, p) - struct vnode *vp; - int mode; - struct ucred *cred; - struct proc *p; -{ - struct vattr *vap; - struct vattr vattr; - int error; - - /* - * If you're the super-user, - * you always get access. - */ - if (cred->cr_uid == (uid_t) 0) - return (0); - vap = &vattr; - if (error = VOP_GETATTR(vp, vap, cred, p)) - return (error); - - /* - * Access check is based on only one of owner, group, public. - * If not owner, then check group. If not a member of the - * group, then check public access. - */ - if (cred->cr_uid != vap->va_uid) { - gid_t *gp; - int i; - - mode >>= 3; - gp = cred->cr_groups; - for (i = 0; i < cred->cr_ngroups; i++, gp++) - if (vap->va_gid == *gp) - goto found; - mode >>= 3; -found: - ; - } - - if ((vap->va_mode & mode) == mode) - return (0); - - return (EACCES); -} /* * vp is the current namei directory * ndp is the name to locate in that directory... */ -kernfs_lookup(dvp, ndp, p) - struct vnode *dvp; - struct nameidata *ndp; - struct proc *p; -{ - char *pname = ndp->ni_ptr; - int error = ENOENT; - int i; +kernfs_lookup(ap) + struct vop_lookup_args /* { + struct vnode * a_dvp; + struct vnode ** a_vpp; + struct componentname * a_cnp; + } */ *ap; +{ + struct componentname *cnp = ap->a_cnp; + struct vnode **vpp = ap->a_vpp; + struct vnode *dvp = ap->a_dvp; + char *pname = cnp->cn_nameptr; + struct kern_target *kt; struct vnode *fvp; + int error, i; #ifdef KERNFS_DIAGNOSTIC + printf("kernfs_lookup(%x)\n", ap); + printf("kernfs_lookup(dp = %x, vpp = %x, cnp = %x)\n", dvp, vpp, ap->a_cnp); printf("kernfs_lookup(%s)\n", pname); #endif - if (ndp->ni_namelen == 1 && *pname == '.') { - ndp->ni_dvp = dvp; - ndp->ni_vp = dvp; + + if (cnp->cn_namelen == 1 && *pname == '.') { + *vpp = dvp; VREF(dvp); /*VOP_LOCK(dvp);*/ return (0); } #if 0 - if (ndp->ni_namelen == 4 && bcmp(pname, "root", 4) == 0) { - ndp->ni_dvp = rootdir; - ndp->ni_vp = rootdir; - VREF(rootdir); + if (cnp->cn_namelen == 4 && bcmp(pname, "root", 4) == 0) { + *vpp = rootdir; VREF(rootdir); VOP_LOCK(rootdir); return (0); } #endif - - /* - * /kern/rootdev is the root device - */ - if (ndp->ni_namelen == 7 && bcmp(pname, "rootdev", 7) == 0) { - if (vfinddev(rootdev, VBLK, &fvp)) - return (ENXIO); - ndp->ni_dvp = dvp; - ndp->ni_vp = fvp; - VREF(fvp); - VOP_LOCK(fvp); - return (0); - } - for (i = 0; i < nkern_targets; i++) { - struct kern_target *kt = &kern_targets[i]; - if (ndp->ni_namelen == strlen(kt->kt_name) && - bcmp(kt->kt_name, pname, ndp->ni_namelen) == 0) { + *vpp = NULL; + + for (error = ENOENT, kt = kern_targets, i = 0; i < nkern_targets; + kt++, i++) { + if (cnp->cn_namelen == strlen(kt->kt_name) && + bcmp(kt->kt_name, pname, cnp->cn_namelen) == 0) { error = 0; break; } @@ -310,81 +243,118 @@ kernfs_lookup(dvp, ndp, p) #endif if (error) - goto bad; + return (error); + + if (kt->kt_tag == KTT_DEVICE) { + dev_t *dp = kt->kt_data; + loop: + if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) + return (ENOENT); + *vpp = fvp; + if (vget(fvp, 1)) + goto loop; + return (0); + } #ifdef KERNFS_DIAGNOSTIC printf("kernfs_lookup: allocate new vnode\n"); #endif - error = getnewvnode(VT_KERNFS, dvp->v_mount, &kernfs_vnodeops, &fvp); - if (error) - goto bad; - VTOKERN(fvp)->kf_kt = &kern_targets[i]; - fvp->v_type = VTOKERN(fvp)->kf_kt->kt_vtype; - ndp->ni_dvp = dvp; - ndp->ni_vp = fvp; + if (error = getnewvnode(VT_KERNFS, dvp->v_mount, kernfs_vnodeop_p, + &fvp)) + return (error); + + MALLOC(fvp->v_data, void *, sizeof(struct kernfs_node), M_TEMP, + M_WAITOK); + VTOKERN(fvp)->kf_kt = kt; + fvp->v_type = kt->kt_vtype; + *vpp = fvp; + #ifdef KERNFS_DIAGNOSTIC printf("kernfs_lookup: newvp = %x\n", fvp); #endif return (0); - -bad:; - ndp->ni_dvp = dvp; - ndp->ni_vp = NULL; -#ifdef KERNFS_DIAGNOSTIC - printf("kernfs_lookup: error = %d\n", error); -#endif - return (error); } -kernfs_open(vp, mode, cred, p) - struct vnode *vp; - int mode; - struct ucred *cred; - struct proc *p; +kernfs_open(ap) + struct vop_open_args /* { + struct vnode *a_vp; + int a_mode; + struct ucred *a_cred; + struct proc *a_p; + } */ *ap; { - int error; - struct filedesc *fdp; - struct file *fp; - int dfd; - int fd; -#ifdef KERNFS_DIAGNOSTIC - printf("kernfs_open\n"); -#endif + /* Only need to check access permissions. */ + return (0); +} - /* - * Can always open the root (modulo perms) - */ - if (vp->v_flag & VROOT) - return (0); +static int +kernfs_access(ap) + struct vop_access_args /* { + struct vnode *a_vp; + int a_mode; + struct ucred *a_cred; + struct proc *a_p; + } */ *ap; +{ + register struct vnode *vp = ap->a_vp; + register struct ucred *cred = ap->a_cred; + mode_t amode = ap->a_mode; + mode_t fmode = + (vp->v_flag & VROOT) ? DIR_MODE : VTOKERN(vp)->kf_kt->kt_mode; + mode_t mask = 0; + register gid_t *gp; + int i; -#ifdef KERNFS_DIAGNOSTIC - printf("kernfs_open, mode = %x, file = %s\n", - mode, VTOKERN(vp)->kf_kt->kt_name); -#endif + /* Some files are simply not modifiable. */ + if ((amode & VWRITE) && (fmode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0) + return (EPERM); - if ((mode & FWRITE) && VTOKERN(vp)->kf_kt->kt_rw != KTM_RW) - return (EACCES); + /* Root can do anything else. */ + if (cred->cr_uid == 0) + return (0); - return (0); -} + /* Check for group 0 (wheel) permissions. */ + for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) + if (*gp == 0) { + if (amode & VEXEC) + mask |= S_IXGRP; + if (amode & VREAD) + mask |= S_IRGRP; + if (amode & VWRITE) + mask |= S_IWGRP; + return ((fmode & mask) == mask ? 0 : EACCES); + } -kernfs_getattr(vp, vap, cred, p) - struct vnode *vp; - struct vattr *vap; - struct ucred *cred; - struct proc *p; + /* Otherwise, check everyone else. */ + if (amode & VEXEC) + mask |= S_IXOTH; + if (amode & VREAD) + mask |= S_IROTH; + if (amode & VWRITE) + mask |= S_IWOTH; + return ((fmode & mask) == mask ? 0 : EACCES); +} + +kernfs_getattr(ap) + struct vop_getattr_args /* { + struct vnode *a_vp; + struct vattr *a_vap; + struct ucred *a_cred; + struct proc *a_p; + } */ *ap; { + struct vnode *vp = ap->a_vp; + struct vattr *vap = ap->a_vap; int error = 0; char strbuf[KSTRING]; - struct kern_target *kt = VTOKERN(vp)->kf_kt; bzero((caddr_t) vap, sizeof(*vap)); vattr_null(vap); vap->va_uid = 0; vap->va_gid = 0; vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; - /* vap->va_qsize = 0; */ + vap->va_size = 0; vap->va_blocksize = DEV_BSIZE; microtime(&vap->va_atime); vap->va_mtime = vap->va_atime; @@ -392,7 +362,6 @@ kernfs_getattr(vp, vap, cred, p) vap->va_gen = 0; vap->va_flags = 0; vap->va_rdev = 0; - /* vap->va_qbytes = 0; */ vap->va_bytes = 0; if (vp->v_flag & VROOT) { @@ -400,33 +369,37 @@ kernfs_getattr(vp, vap, cred, p) printf("kernfs_getattr: stat rootdir\n"); #endif vap->va_type = VDIR; - vap->va_mode = KTM_DIR_MODE; + vap->va_mode = DIR_MODE; vap->va_nlink = 2; vap->va_fileid = 2; vap->va_size = DEV_BSIZE; } else { + struct kern_target *kt = VTOKERN(vp)->kf_kt; + int nbytes; #ifdef KERNFS_DIAGNOSTIC printf("kernfs_getattr: stat target %s\n", kt->kt_name); #endif vap->va_type = kt->kt_vtype; - vap->va_mode = (kt->kt_rw ? KTM_RW_MODE : KTM_RO_MODE); + vap->va_mode = kt->kt_mode; vap->va_nlink = 1; - vap->va_fileid = 3 + (kt - kern_targets) / sizeof(*kt); - error = kernfs_xread(kt, strbuf, sizeof(strbuf), &vap->va_size); + vap->va_fileid = 1 + (kt - kern_targets) / sizeof(*kt); + error = kernfs_xread(kt, strbuf, sizeof(strbuf), &nbytes); + vap->va_size = nbytes; } - vp->v_type = vap->va_type; #ifdef KERNFS_DIAGNOSTIC printf("kernfs_getattr: return error %d\n", error); #endif return (error); } -kernfs_setattr(vp, vap, cred, p) - struct vnode *vp; - struct vattr *vap; - struct ucred *cred; - struct proc *p; +kernfs_setattr(ap) + struct vop_setattr_args /* { + struct vnode *a_vp; + struct vattr *a_vap; + struct ucred *a_cred; + struct proc *a_p; + } */ *ap; { /* @@ -439,50 +412,64 @@ kernfs_setattr(vp, vap, cred, p) } static int -kernfs_read(vp, uio, ioflag, cred) - struct vnode *vp; - struct uio *uio; - int ioflag; - struct ucred *cred; +kernfs_read(ap) + struct vop_read_args /* { + struct vnode *a_vp; + struct uio *a_uio; + int a_ioflag; + struct ucred *a_cred; + } */ *ap; { - struct kern_target *kt = VTOKERN(vp)->kf_kt; + struct vnode *vp = ap->a_vp; + struct uio *uio = ap->a_uio; + struct kern_target *kt; char strbuf[KSTRING]; int off = uio->uio_offset; - int len = 0; - char *cp = strbuf; - int error; + int error, len; + char *cp; + + if (vp->v_type == VDIR) + return (EOPNOTSUPP); + + kt = VTOKERN(vp)->kf_kt; + #ifdef KERNFS_DIAGNOSTIC printf("kern_read %s\n", kt->kt_name); #endif - error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len); - if (error) + len = 0; + if (error = kernfs_xread(kt, strbuf, sizeof(strbuf), &len)) return (error); - cp = strbuf + off; - len -= off; - return (uiomove(cp, len, uio)); + if (len <= off) + return (0); + return (uiomove(&strbuf[off], len - off, uio)); } static int -kernfs_write(vp, uio, ioflag, cred) - struct vnode *vp; - struct uio *uio; - int ioflag; - struct ucred *cred; +kernfs_write(ap) + struct vop_write_args /* { + struct vnode *a_vp; + struct uio *a_uio; + int a_ioflag; + struct ucred *a_cred; + } */ *ap; { - struct kern_target *kt = VTOKERN(vp)->kf_kt; + struct vnode *vp = ap->a_vp; + struct uio *uio = ap->a_uio; + struct kern_target *kt; + int error, xlen; char strbuf[KSTRING]; - int len = uio->uio_resid; - char *cp = strbuf; - int xlen; - int error; + + if (vp->v_type == VDIR) + return (EOPNOTSUPP); + + kt = VTOKERN(vp)->kf_kt; if (uio->uio_offset != 0) return (EINVAL); xlen = min(uio->uio_resid, KSTRING-1); - error = uiomove(strbuf, xlen, uio); - if (error) + if (error = uiomove(strbuf, xlen, uio)) return (error); if (uio->uio_resid != 0) @@ -493,53 +480,54 @@ kernfs_write(vp, uio, ioflag, cred) return (kernfs_xwrite(kt, strbuf, xlen)); } -kernfs_readdir(vp, uio, cred, eofflagp) - struct vnode *vp; - struct uio *uio; - struct ucred *cred; - int *eofflagp; -{ - struct filedesc *fdp; +kernfs_readdir(ap) + struct vop_readdir_args /* { + struct vnode *a_vp; + struct uio *a_uio; + struct ucred *a_cred; + } */ *ap; +{ + struct uio *uio = ap->a_uio; + register struct kern_target *kt; + struct dirent d; int i; int error; + if (ap->a_vp->v_type != VDIR) + return (ENOTDIR); + i = uio->uio_offset / UIO_MX; error = 0; - while (uio->uio_resid > 0) { + for (kt = &kern_targets[i]; + uio->uio_resid >= UIO_MX && i < nkern_targets; kt++, i++) { + register struct dirent *dp = &d; #ifdef KERNFS_DIAGNOSTIC printf("kernfs_readdir: i = %d\n", i); #endif - if (i >= nkern_targets) { - *eofflagp = 1; - break; + if (kt->kt_tag == KTT_DEVICE) { + register dev_t *dp = kt->kt_data; + struct vnode *fvp; + if (*dp == NODEV || !vfinddev(*dp, kt->kt_vtype, &fvp)) + continue; } - { - struct direct d; - struct direct *dp = &d; - struct kern_target *kt = &kern_targets[i]; - - bzero((caddr_t) dp, UIO_MX); - - dp->d_namlen = strlen(kt->kt_name); - bcopy(kt->kt_name, dp->d_name, dp->d_namlen+1); - -#ifdef KERNFS_DIAGNOSTIC - printf("kernfs_readdir: name = %s, len = %d\n", - dp->d_name, dp->d_namlen); -#endif - /* - * Fill in the remaining fields - */ - dp->d_reclen = UIO_MX; - dp->d_ino = i + 3; - /* - * And ship to userland - */ - error = uiomove((caddr_t) dp, UIO_MX, uio); - if (error) - break; - } - i++; + bzero((caddr_t)dp, UIO_MX); + dp->d_namlen = kt->kt_namlen; + bcopy(kt->kt_name, dp->d_name, kt->kt_namlen + 1); +#ifdef KERNFS_DIAGNOSTIC + printf("kernfs_readdir: name = %s, len = %d\n", + dp->d_name, dp->d_namlen); +#endif + /* + * Fill in the remaining fields + */ + dp->d_reclen = UIO_MX; + dp->d_fileno = i + 3; + dp->d_type = kt->kt_type; + /* + * And ship to userland + */ + if (error = uiomove((caddr_t)dp, UIO_MX, uio)) + break; } uio->uio_offset = i * UIO_MX; @@ -547,44 +535,118 @@ kernfs_readdir(vp, uio, cred, eofflagp) return (error); } -kernfs_inactive(vp, p) - struct vnode *vp; - struct proc *p; +kernfs_inactive(ap) + struct vop_inactive_args /* { + struct vnode *a_vp; + } */ *ap; { + struct vnode *vp = ap->a_vp; + +#ifdef KERNFS_DIAGNOSTIC + printf("kernfs_inactive(%x)\n", vp); +#endif /* * Clear out the v_type field to avoid * nasty things happening in vgone(). */ vp->v_type = VNON; + return (0); +} + +kernfs_reclaim(ap) + struct vop_reclaim_args /* { + struct vnode *a_vp; + } */ *ap; +{ + struct vnode *vp = ap->a_vp; + #ifdef KERNFS_DIAGNOSTIC - printf("kernfs_inactive(%x)\n", vp); + printf("kernfs_reclaim(%x)\n", vp); #endif + if (vp->v_data) { + FREE(vp->v_data, M_TEMP); + vp->v_data = 0; + } return (0); } /* - * Print out the contents of a kernfs vnode. + * Return POSIX pathconf information applicable to special devices. + */ +kernfs_pathconf(ap) + struct vop_pathconf_args /* { + struct vnode *a_vp; + int a_name; + int *a_retval; + } */ *ap; +{ + + switch (ap->a_name) { + case _PC_LINK_MAX: + *ap->a_retval = LINK_MAX; + return (0); + case _PC_MAX_CANON: + *ap->a_retval = MAX_CANON; + return (0); + case _PC_MAX_INPUT: + *ap->a_retval = MAX_INPUT; + return (0); + case _PC_PIPE_BUF: + *ap->a_retval = PIPE_BUF; + return (0); + case _PC_CHOWN_RESTRICTED: + *ap->a_retval = 1; + return (0); + case _PC_VDISABLE: + *ap->a_retval = _POSIX_VDISABLE; + return (0); + default: + return (EINVAL); + } + /* NOTREACHED */ +} + +/* + * Print out the contents of a /dev/fd vnode. */ /* ARGSUSED */ -kernfs_print(vp) - struct vnode *vp; +kernfs_print(ap) + struct vop_print_args /* { + struct vnode *a_vp; + } */ *ap; { - printf("tag VT_NON, kernfs vnode\n"); + + printf("tag VT_KERNFS, kernfs vnode\n"); + return (0); +} + +/*void*/ +kernfs_vfree(ap) + struct vop_vfree_args /* { + struct vnode *a_pvp; + ino_t a_ino; + int a_mode; + } */ *ap; +{ + + return (0); } /* - * kernfs vnode unsupported operation + * /dev/fd vnode unsupported operation */ kernfs_enotsupp() { + return (EOPNOTSUPP); } /* - * kernfs "should never get here" operation + * /dev/fd "should never get here" operation */ kernfs_badop() { + panic("kernfs: bad op"); /* NOTREACHED */ } @@ -594,144 +656,89 @@ kernfs_badop() */ kernfs_nullop() { + return (0); } -#define kernfs_create ((int (*) __P(( \ - struct nameidata *ndp, \ - struct vattr *vap, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_mknod ((int (*) __P(( \ - struct nameidata *ndp, \ - struct vattr *vap, \ - struct ucred *cred, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_close ((int (*) __P(( \ - struct vnode *vp, \ - int fflag, \ - struct ucred *cred, \ - struct proc *p))) nullop) -#define kernfs_ioctl ((int (*) __P(( \ - struct vnode *vp, \ - int command, \ - caddr_t data, \ - int fflag, \ +#define kernfs_create ((int (*) __P((struct vop_create_args *)))kernfs_enotsupp) +#define kernfs_mknod ((int (*) __P((struct vop_mknod_args *)))kernfs_enotsupp) +#define kernfs_close ((int (*) __P((struct vop_close_args *)))nullop) +#define kernfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))kernfs_enotsupp) +#define kernfs_select ((int (*) __P((struct vop_select_args *)))kernfs_enotsupp) +#define kernfs_mmap ((int (*) __P((struct vop_mmap_args *)))kernfs_enotsupp) +#define kernfs_fsync ((int (*) __P((struct vop_fsync_args *)))nullop) +#define kernfs_seek ((int (*) __P((struct vop_seek_args *)))nullop) +#define kernfs_remove ((int (*) __P((struct vop_remove_args *)))kernfs_enotsupp) +#define kernfs_link ((int (*) __P((struct vop_link_args *)))kernfs_enotsupp) +#define kernfs_rename ((int (*) __P((struct vop_rename_args *)))kernfs_enotsupp) +#define kernfs_mkdir ((int (*) __P((struct vop_mkdir_args *)))kernfs_enotsupp) +#define kernfs_rmdir ((int (*) __P((struct vop_rmdir_args *)))kernfs_enotsupp) +#define kernfs_symlink ((int (*) __P((struct vop_symlink_args *)))kernfs_enotsupp) +#define kernfs_readlink \ + ((int (*) __P((struct vop_readlink_args *)))kernfs_enotsupp) +#define kernfs_abortop ((int (*) __P((struct vop_abortop_args *)))nullop) +#define kernfs_lock ((int (*) __P((struct vop_lock_args *)))nullop) +#define kernfs_unlock ((int (*) __P((struct vop_unlock_args *)))nullop) +#define kernfs_bmap ((int (*) __P((struct vop_bmap_args *)))kernfs_badop) +#define kernfs_strategy ((int (*) __P((struct vop_strategy_args *)))kernfs_badop) +#define kernfs_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) +#define kernfs_advlock ((int (*) __P((struct vop_advlock_args *)))kernfs_enotsupp) +#define kernfs_blkatoff \ + ((int (*) __P((struct vop_blkatoff_args *)))kernfs_enotsupp) +#define kernfs_valloc ((int(*) __P(( \ + struct vnode *pvp, \ + int mode, \ struct ucred *cred, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_select ((int (*) __P(( \ - struct vnode *vp, \ - int which, \ - int fflags, \ - struct ucred *cred, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_mmap ((int (*) __P(( \ - struct vnode *vp, \ - int fflags, \ - struct ucred *cred, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_fsync ((int (*) __P(( \ - struct vnode *vp, \ - int fflags, \ - struct ucred *cred, \ - int waitfor, \ - struct proc *p))) nullop) -#define kernfs_seek ((int (*) __P(( \ - struct vnode *vp, \ - off_t oldoff, \ - off_t newoff, \ - struct ucred *cred))) nullop) -#define kernfs_remove ((int (*) __P(( \ - struct nameidata *ndp, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_link ((int (*) __P(( \ - struct vnode *vp, \ - struct nameidata *ndp, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_rename ((int (*) __P(( \ - struct nameidata *fndp, \ - struct nameidata *tdnp, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_mkdir ((int (*) __P(( \ - struct nameidata *ndp, \ - struct vattr *vap, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_rmdir ((int (*) __P(( \ - struct nameidata *ndp, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_symlink ((int (*) __P(( \ - struct nameidata *ndp, \ - struct vattr *vap, \ - char *target, \ - struct proc *p))) kernfs_enotsupp) -#define kernfs_readlink ((int (*) __P(( \ - struct vnode *vp, \ - struct uio *uio, \ - struct ucred *cred))) kernfs_enotsupp) -#define kernfs_abortop ((int (*) __P(( \ - struct nameidata *ndp))) nullop) -#ifdef KERNFS_DIAGNOSTIC -int kernfs_reclaim(vp) -struct vnode *vp; -{ - printf("kernfs_reclaim(%x)\n", vp); - return (0); -} -#else -#define kernfs_reclaim ((int (*) __P(( \ - struct vnode *vp))) nullop) -#endif -#define kernfs_lock ((int (*) __P(( \ - struct vnode *vp))) nullop) -#define kernfs_unlock ((int (*) __P(( \ - struct vnode *vp))) nullop) -#define kernfs_bmap ((int (*) __P(( \ - struct vnode *vp, \ - daddr_t bn, \ - struct vnode **vpp, \ - daddr_t *bnp))) kernfs_badop) -#define kernfs_strategy ((int (*) __P(( \ - struct buf *bp))) kernfs_badop) -#define kernfs_islocked ((int (*) __P(( \ - struct vnode *vp))) nullop) -#define kernfs_advlock ((int (*) __P(( \ - struct vnode *vp, \ - caddr_t id, \ - int op, \ - struct flock *fl, \ - int flags))) kernfs_enotsupp) - -struct vnodeops kernfs_vnodeops = { - kernfs_lookup, /* lookup */ - kernfs_create, /* create */ - kernfs_mknod, /* mknod */ - kernfs_open, /* open */ - kernfs_close, /* close */ - kernfs_access, /* access */ - kernfs_getattr, /* getattr */ - kernfs_setattr, /* setattr */ - kernfs_read, /* read */ - kernfs_write, /* write */ - kernfs_ioctl, /* ioctl */ - kernfs_select, /* select */ - kernfs_mmap, /* mmap */ - kernfs_fsync, /* fsync */ - kernfs_seek, /* seek */ - kernfs_remove, /* remove */ - kernfs_link, /* link */ - kernfs_rename, /* rename */ - kernfs_mkdir, /* mkdir */ - kernfs_rmdir, /* rmdir */ - kernfs_symlink, /* symlink */ - kernfs_readdir, /* readdir */ - kernfs_readlink, /* readlink */ - kernfs_abortop, /* abortop */ - kernfs_inactive, /* inactive */ - kernfs_reclaim, /* reclaim */ - kernfs_lock, /* lock */ - kernfs_unlock, /* unlock */ - kernfs_bmap, /* bmap */ - kernfs_strategy, /* strategy */ - kernfs_print, /* print */ - kernfs_islocked, /* islocked */ - kernfs_advlock, /* advlock */ + struct vnode **vpp))) kernfs_enotsupp) +#define kernfs_truncate \ + ((int (*) __P((struct vop_truncate_args *)))kernfs_enotsupp) +#define kernfs_update ((int (*) __P((struct vop_update_args *)))kernfs_enotsupp) +#define kernfs_bwrite ((int (*) __P((struct vop_bwrite_args *)))kernfs_enotsupp) + +int (**kernfs_vnodeop_p)(); +struct vnodeopv_entry_desc kernfs_vnodeop_entries[] = { + { &vop_default_desc, vn_default_error }, + { &vop_lookup_desc, kernfs_lookup }, /* lookup */ + { &vop_create_desc, kernfs_create }, /* create */ + { &vop_mknod_desc, kernfs_mknod }, /* mknod */ + { &vop_open_desc, kernfs_open }, /* open */ + { &vop_close_desc, kernfs_close }, /* close */ + { &vop_access_desc, kernfs_access }, /* access */ + { &vop_getattr_desc, kernfs_getattr }, /* getattr */ + { &vop_setattr_desc, kernfs_setattr }, /* setattr */ + { &vop_read_desc, kernfs_read }, /* read */ + { &vop_write_desc, kernfs_write }, /* write */ + { &vop_ioctl_desc, kernfs_ioctl }, /* ioctl */ + { &vop_select_desc, kernfs_select }, /* select */ + { &vop_mmap_desc, kernfs_mmap }, /* mmap */ + { &vop_fsync_desc, kernfs_fsync }, /* fsync */ + { &vop_seek_desc, kernfs_seek }, /* seek */ + { &vop_remove_desc, kernfs_remove }, /* remove */ + { &vop_link_desc, kernfs_link }, /* link */ + { &vop_rename_desc, kernfs_rename }, /* rename */ + { &vop_mkdir_desc, kernfs_mkdir }, /* mkdir */ + { &vop_rmdir_desc, kernfs_rmdir }, /* rmdir */ + { &vop_symlink_desc, kernfs_symlink }, /* symlink */ + { &vop_readdir_desc, kernfs_readdir }, /* readdir */ + { &vop_readlink_desc, kernfs_readlink },/* readlink */ + { &vop_abortop_desc, kernfs_abortop }, /* abortop */ + { &vop_inactive_desc, kernfs_inactive },/* inactive */ + { &vop_reclaim_desc, kernfs_reclaim }, /* reclaim */ + { &vop_lock_desc, kernfs_lock }, /* lock */ + { &vop_unlock_desc, kernfs_unlock }, /* unlock */ + { &vop_bmap_desc, kernfs_bmap }, /* bmap */ + { &vop_strategy_desc, kernfs_strategy },/* strategy */ + { &vop_print_desc, kernfs_print }, /* print */ + { &vop_islocked_desc, kernfs_islocked },/* islocked */ + { &vop_pathconf_desc, kernfs_pathconf },/* pathconf */ + { &vop_advlock_desc, kernfs_advlock }, /* advlock */ + { &vop_blkatoff_desc, kernfs_blkatoff },/* blkatoff */ + { &vop_valloc_desc, kernfs_valloc }, /* valloc */ + { &vop_vfree_desc, kernfs_vfree }, /* vfree */ + { &vop_truncate_desc, kernfs_truncate },/* truncate */ + { &vop_update_desc, kernfs_update }, /* update */ + { &vop_bwrite_desc, kernfs_bwrite }, /* bwrite */ + { (struct vnodeop_desc*)NULL, (int(*)())NULL } }; +struct vnodeopv_desc kernfs_vnodeop_opv_desc = + { &kernfs_vnodeop_p, kernfs_vnodeop_entries };