/* $NetBSD: osf1_file.c,v 1.41.28.1 2014/08/27 15:29:29 msaitoh Exp $ */ /* * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1994, 1995 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include __KERNEL_RCSID(0, "$NetBSD: osf1_file.c,v 1.41.28.1 2014/08/27 15:29:29 msaitoh Exp $"); #if defined(_KERNEL_OPT) #include "opt_syscall_debug.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef SYSCALL_DEBUG extern int scdebug; #endif int osf1_sys_access(struct lwp *l, const struct osf1_sys_access_args *uap, register_t *retval) { struct sys_access_args a; unsigned long leftovers; SCARG(&a, path) = SCARG(uap, path); /* translate flags */ SCARG(&a, flags) = emul_flags_translate(osf1_access_flags_xtab, SCARG(uap, flags), &leftovers); if (leftovers != 0) return (EINVAL); return sys_access(l, &a, retval); } int osf1_sys_execve(struct lwp *l, const struct osf1_sys_execve_args *uap, register_t *retval) { struct sys_execve_args ap; SCARG(&ap, path) = SCARG(uap, path); SCARG(&ap, argp) = SCARG(uap, argp); SCARG(&ap, envp) = SCARG(uap, envp); return sys_execve(l, &ap, retval); } int osf1_sys_getdirentries(struct lwp *l, const struct osf1_sys_getdirentries_args *uap, register_t *retval) { /* { syscallarg(int) fd; syscallarg(char *) buf; syscallarg(int) nbytes; syscallarg(long *) basep; } */ struct dirent *bdp; struct vnode *vp; char *inp, *buf; /* BSD-format */ int len, reclen; /* BSD-format */ char *outp; /* OSF1-format */ int resid, osf1_reclen; /* OSF1-format */ struct file *fp; struct uio auio; struct iovec aiov; struct osf1_dirent idb; off_t off, off1; /* true file offset */ int buflen, error, eofflag; off_t *cookiebuf = NULL, *cookie; int ncookies, fd; if (SCARG(uap, nbytes) < 0) return EINVAL; if (SCARG(uap, nbytes) == 0) return 0; fd = SCARG(uap, fd); if ((error = fd_getvnode(fd, &fp)) != 0) return (error); if ((fp->f_flag & FREAD) == 0) { error = EBADF; goto out1; } vp = (struct vnode *)fp->f_data; if (vp->v_type != VDIR) { error = EINVAL; goto out1; } buflen = min(MAXBSIZE, SCARG(uap, nbytes)); buf = kmem_alloc(buflen, KM_SLEEP); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); off = off1 = fp->f_offset; again: aiov.iov_base = buf; aiov.iov_len = buflen; auio.uio_iov = &aiov; auio.uio_iovcnt = 1; auio.uio_rw = UIO_READ; auio.uio_resid = buflen; auio.uio_offset = off; UIO_SETUP_SYSSPACE(&auio); /* * First we read into the allocated buffer, then * we massage it into user space, one record at a time. */ error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &cookiebuf, &ncookies); if (error) goto out; inp = buf; outp = (char *)SCARG(uap, buf); resid = SCARG(uap, nbytes); if ((len = buflen - auio.uio_resid) == 0) goto eof; for (cookie = cookiebuf; len > 0; len -= reclen) { bdp = (struct dirent *)inp; reclen = bdp->d_reclen; if (reclen & 3) panic("osf1_sys_getdirentries: bad reclen"); if (cookie) off = *cookie++; /* each entry points to the next */ else off += reclen; if ((off >> 32) != 0) { compat_offseterr(vp, "osf1_sys_getdirentries"); error = EINVAL; goto out; } if (bdp->d_fileno == 0) { inp += reclen; /* it is a hole; squish it out */ continue; } osf1_reclen = OSF1_RECLEN(&idb, bdp->d_namlen); if (reclen > len || resid < osf1_reclen) { /* entry too big for buffer, so just stop */ outp++; break; } /* * Massage in place to make a OSF1-shaped dirent (otherwise * we have to worry about touching user memory outside of * the copyout() call). */ idb.d_ino = (osf1_ino_t)bdp->d_fileno; idb.d_reclen = (u_short)osf1_reclen; idb.d_namlen = (u_short)bdp->d_namlen; strlcpy(idb.d_name, bdp->d_name, sizeof(idb.d_name)); if ((error = copyout((void *)&idb, outp, osf1_reclen))) goto out; /* advance past this real entry */ inp += reclen; /* advance output past OSF1-shaped entry */ outp += osf1_reclen; resid -= osf1_reclen; } /* if we squished out the whole block, try again */ if (outp == (char *)SCARG(uap, buf)) { if (cookiebuf) free(cookiebuf, M_TEMP); cookiebuf = NULL; goto again; } fp->f_offset = off; /* update the vnode offset */ eof: *retval = SCARG(uap, nbytes) - resid; out: VOP_UNLOCK(vp); if (cookiebuf) free(cookiebuf, M_TEMP); kmem_free(buf, buflen); if (SCARG(uap, basep) != NULL) error = copyout(&off1, SCARG(uap, basep), sizeof(long)); out1: fd_putfile(fd); return error; } /* * Get file status; this version does not follow links. */ /* ARGSUSED */ int osf1_sys_lstat(struct lwp *l, const struct osf1_sys_lstat_args *uap, register_t *retval) { struct stat sb; struct osf1_stat osb; int error; error = do_sys_stat(SCARG(uap, path), NOFOLLOW, &sb); if (error) return (error); osf1_cvt_stat_from_native(&sb, &osb); error = copyout(&osb, SCARG(uap, ub), sizeof (osb)); return (error); } /* * Get file status; this version does not follow links. */ /* ARGSUSED */ int osf1_sys_lstat2(struct lwp *l, const struct osf1_sys_lstat2_args *uap, register_t *retval) { struct stat sb; struct osf1_stat2 osb; int error; error = do_sys_stat(SCARG(uap, path), NOFOLLOW, &sb); if (error) return (error); osf1_cvt_stat2_from_native(&sb, &osb); error = copyout((void *)&osb, (void *)SCARG(uap, ub), sizeof (osb)); return (error); } int osf1_sys_mknod(struct lwp *l, const struct osf1_sys_mknod_args *uap, register_t *retval) { return do_sys_mknod(l, SCARG(uap, path), SCARG(uap, mode), osf1_cvt_dev_to_native(SCARG(uap, dev)), retval, UIO_USERSPACE); } int osf1_sys_open(struct lwp *l, const struct osf1_sys_open_args *uap, register_t *retval) { struct sys_open_args a; const char *path; unsigned long leftovers; #ifdef SYSCALL_DEBUG char pnbuf[1024]; if (scdebug && copyinstr(SCARG(uap, path), pnbuf, sizeof pnbuf, NULL) == 0) printf("osf1_open: open: %s\n", pnbuf); #endif /* translate flags */ SCARG(&a, flags) = emul_flags_translate(osf1_open_flags_xtab, SCARG(uap, flags), &leftovers); if (leftovers != 0) return (EINVAL); /* copy mode, no translation necessary */ SCARG(&a, mode) = SCARG(uap, mode); /* pick appropriate path */ path = SCARG(uap, path); SCARG(&a, path) = path; return sys_open(l, &a, retval); } int osf1_sys_pathconf(struct lwp *l, const struct osf1_sys_pathconf_args *uap, register_t *retval) { struct sys_pathconf_args a; int error; SCARG(&a, path) = SCARG(uap, path); error = osf1_cvt_pathconf_name_to_native(SCARG(uap, name), &SCARG(&a, name)); if (error == 0) error = sys_pathconf(l, &a, retval); return (error); } /* * Get file status; this version follows links. */ /* ARGSUSED */ int osf1_sys_stat(struct lwp *l, const struct osf1_sys_stat_args *uap, register_t *retval) { struct stat sb; struct osf1_stat osb; int error; error = do_sys_stat(SCARG(uap, path), FOLLOW, &sb); if (error) return (error); osf1_cvt_stat_from_native(&sb, &osb); error = copyout((void *)&osb, (void *)SCARG(uap, ub), sizeof (osb)); return (error); } /* * Get file status; this version follows links. */ /* ARGSUSED */ int osf1_sys_stat2(struct lwp *l, const struct osf1_sys_stat2_args *uap, register_t *retval) { struct stat sb; struct osf1_stat2 osb; int error; error = do_sys_stat(SCARG(uap, path), FOLLOW, &sb); if (error) return (error); osf1_cvt_stat2_from_native(&sb, &osb); error = copyout((void *)&osb, (void *)SCARG(uap, ub), sizeof (osb)); return (error); } int osf1_sys_truncate(struct lwp *l, const struct osf1_sys_truncate_args *uap, register_t *retval) { struct sys_truncate_args a; SCARG(&a, path) = SCARG(uap, path); SCARG(&a, PAD) = 0; SCARG(&a, length) = SCARG(uap, length); return sys_truncate(l, &a, retval); } int osf1_sys_utimes(struct lwp *l, const struct osf1_sys_utimes_args *uap, register_t *retval) { struct osf1_timeval otv; struct timeval tv[2], *tvp; int error; if (SCARG(uap, tptr) == NULL) tvp = NULL; else { /* get the OSF/1 timeval argument */ error = copyin(SCARG(uap, tptr), &otv, sizeof otv); if (error != 0) return error; /* fill in and copy out the NetBSD timeval */ tv[0].tv_sec = otv.tv_sec; tv[0].tv_usec = otv.tv_usec; /* Set access and modified to the same time */ tv[1].tv_sec = otv.tv_sec; tv[1].tv_usec = otv.tv_usec; tvp = tv; } return do_sys_utimes(l, NULL, SCARG(uap, path), FOLLOW, tvp, UIO_SYSSPACE); }