linux_file.c revision 73286
19313Ssos/*- 29313Ssos * Copyright (c) 1994-1995 S�ren Schmidt 39313Ssos * All rights reserved. 49313Ssos * 59313Ssos * Redistribution and use in source and binary forms, with or without 69313Ssos * modification, are permitted provided that the following conditions 79313Ssos * are met: 89313Ssos * 1. Redistributions of source code must retain the above copyright 99313Ssos * notice, this list of conditions and the following disclaimer 109313Ssos * in this position and unchanged. 119313Ssos * 2. Redistributions in binary form must reproduce the above copyright 129313Ssos * notice, this list of conditions and the following disclaimer in the 139313Ssos * documentation and/or other materials provided with the distribution. 149313Ssos * 3. The name of the author may not be used to endorse or promote products 159313Ssos * derived from this software withough specific prior written permission 169313Ssos * 179313Ssos * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 189313Ssos * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 199313Ssos * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 209313Ssos * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 219313Ssos * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 229313Ssos * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 239313Ssos * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 249313Ssos * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 259313Ssos * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 269313Ssos * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 279313Ssos * 2850477Speter * $FreeBSD: head/sys/compat/linux/linux_file.c 73286 2001-03-01 21:00:17Z adrian $ 299313Ssos */ 309313Ssos 3131784Seivind#include "opt_compat.h" 3231784Seivind 339313Ssos#include <sys/param.h> 349313Ssos#include <sys/systm.h> 3512458Sbde#include <sys/sysproto.h> 369313Ssos#include <sys/fcntl.h> 379313Ssos#include <sys/file.h> 389313Ssos#include <sys/filedesc.h> 3931561Sbde#include <sys/lock.h> 409313Ssos#include <sys/proc.h> 419313Ssos#include <sys/vnode.h> 429313Ssos#include <sys/malloc.h> 4372538Sjlemon#include <sys/mount.h> 449313Ssos#include <sys/dirent.h> 4514331Speter#include <sys/conf.h> 4614331Speter#include <sys/tty.h> 4712458Sbde 4872538Sjlemon#include <ufs/ufs/extattr.h> 4972538Sjlemon#include <ufs/ufs/quota.h> 5072538Sjlemon#include <ufs/ufs/ufsmount.h> 5172538Sjlemon 5264905Smarcel#include <machine/../linux/linux.h> 5368583Smarcel#include <machine/../linux/linux_proto.h> 5464905Smarcel#include <compat/linux/linux_util.h> 559313Ssos 5668201Sobrien#ifndef __alpha__ 579313Ssosint 5830994Sphklinux_creat(struct proc *p, struct linux_creat_args *args) 599313Ssos{ 6012858Speter struct open_args /* { 619313Ssos char *path; 629313Ssos int flags; 639313Ssos int mode; 6412858Speter } */ bsd_open_args; 6514331Speter caddr_t sg; 669313Ssos 6714331Speter sg = stackgap_init(); 6814331Speter CHECKALTCREAT(p, &sg, args->path); 6914331Speter 709313Ssos#ifdef DEBUG 7172543Sjlemon if (ldebug(creat)) 7272543Sjlemon printf(ARGS(creat, "%s, %d"), args->path, args->mode); 739313Ssos#endif 749313Ssos bsd_open_args.path = args->path; 759313Ssos bsd_open_args.mode = args->mode; 769313Ssos bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC; 7730994Sphk return open(p, &bsd_open_args); 789313Ssos} 7968201Sobrien#endif /*!__alpha__*/ 809313Ssos 819313Ssosint 8230994Sphklinux_open(struct proc *p, struct linux_open_args *args) 839313Ssos{ 8412858Speter struct open_args /* { 859313Ssos char *path; 869313Ssos int flags; 879313Ssos int mode; 8812858Speter } */ bsd_open_args; 899313Ssos int error; 9014331Speter caddr_t sg; 9114331Speter 9214331Speter sg = stackgap_init(); 939313Ssos 9414331Speter if (args->flags & LINUX_O_CREAT) 9514331Speter CHECKALTCREAT(p, &sg, args->path); 9614331Speter else 9714331Speter CHECKALTEXIST(p, &sg, args->path); 9814331Speter 999313Ssos#ifdef DEBUG 10072543Sjlemon if (ldebug(open)) 10172543Sjlemon printf(ARGS(open, "%s, 0x%x, 0x%x"), 10272543Sjlemon args->path, args->flags, args->mode); 1039313Ssos#endif 1049313Ssos bsd_open_args.flags = 0; 1059313Ssos if (args->flags & LINUX_O_RDONLY) 1069313Ssos bsd_open_args.flags |= O_RDONLY; 1079313Ssos if (args->flags & LINUX_O_WRONLY) 1089313Ssos bsd_open_args.flags |= O_WRONLY; 1099313Ssos if (args->flags & LINUX_O_RDWR) 1109313Ssos bsd_open_args.flags |= O_RDWR; 1119313Ssos if (args->flags & LINUX_O_NDELAY) 1129313Ssos bsd_open_args.flags |= O_NONBLOCK; 1139313Ssos if (args->flags & LINUX_O_APPEND) 1149313Ssos bsd_open_args.flags |= O_APPEND; 1159313Ssos if (args->flags & LINUX_O_SYNC) 1169313Ssos bsd_open_args.flags |= O_FSYNC; 1179313Ssos if (args->flags & LINUX_O_NONBLOCK) 1189313Ssos bsd_open_args.flags |= O_NONBLOCK; 1199313Ssos if (args->flags & LINUX_FASYNC) 1209313Ssos bsd_open_args.flags |= O_ASYNC; 1219313Ssos if (args->flags & LINUX_O_CREAT) 1229313Ssos bsd_open_args.flags |= O_CREAT; 1239313Ssos if (args->flags & LINUX_O_TRUNC) 1249313Ssos bsd_open_args.flags |= O_TRUNC; 1259313Ssos if (args->flags & LINUX_O_EXCL) 1269313Ssos bsd_open_args.flags |= O_EXCL; 1279313Ssos if (args->flags & LINUX_O_NOCTTY) 1289313Ssos bsd_open_args.flags |= O_NOCTTY; 1299313Ssos bsd_open_args.path = args->path; 1309313Ssos bsd_open_args.mode = args->mode; 1319313Ssos 13230994Sphk error = open(p, &bsd_open_args); 13370061Sjhb PROC_LOCK(p); 1349313Ssos if (!error && !(bsd_open_args.flags & O_NOCTTY) && 1359313Ssos SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 1369313Ssos struct filedesc *fdp = p->p_fd; 13730994Sphk struct file *fp = fdp->fd_ofiles[p->p_retval[0]]; 1389313Ssos 13970061Sjhb PROC_UNLOCK(p); 1409313Ssos if (fp->f_type == DTYPE_VNODE) 14151418Sgreen fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, p); 14270061Sjhb } else 14370061Sjhb PROC_UNLOCK(p); 14414331Speter#ifdef DEBUG 14572543Sjlemon if (ldebug(open)) 14672543Sjlemon printf(LMSG("open returns error %d"), error); 14714331Speter#endif 1489313Ssos return error; 1499313Ssos} 1509313Ssos 1519313Ssosstruct linux_flock { 1529313Ssos short l_type; 1539313Ssos short l_whence; 1549313Ssos linux_off_t l_start; 1559313Ssos linux_off_t l_len; 1569313Ssos linux_pid_t l_pid; 1579313Ssos}; 1589313Ssos 1599313Ssosstatic void 1609313Ssoslinux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock) 1619313Ssos{ 1629313Ssos switch (linux_flock->l_type) { 1639313Ssos case LINUX_F_RDLCK: 1649313Ssos bsd_flock->l_type = F_RDLCK; 1659313Ssos break; 1669313Ssos case LINUX_F_WRLCK: 1679313Ssos bsd_flock->l_type = F_WRLCK; 1689313Ssos break; 1699313Ssos case LINUX_F_UNLCK: 1709313Ssos bsd_flock->l_type = F_UNLCK; 1719313Ssos break; 17249676Smarcel default: 17349676Smarcel bsd_flock->l_type = -1; 17449676Smarcel break; 1759313Ssos } 1769313Ssos bsd_flock->l_whence = linux_flock->l_whence; 1779313Ssos bsd_flock->l_start = (off_t)linux_flock->l_start; 1789313Ssos bsd_flock->l_len = (off_t)linux_flock->l_len; 1799313Ssos bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1809313Ssos} 1819313Ssos 1829313Ssosstatic void 1839313Ssosbsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock) 1849313Ssos{ 1859313Ssos switch (bsd_flock->l_type) { 1869313Ssos case F_RDLCK: 1879313Ssos linux_flock->l_type = LINUX_F_RDLCK; 1889313Ssos break; 1899313Ssos case F_WRLCK: 1909313Ssos linux_flock->l_type = LINUX_F_WRLCK; 1919313Ssos break; 1929313Ssos case F_UNLCK: 1939313Ssos linux_flock->l_type = LINUX_F_UNLCK; 1949313Ssos break; 1959313Ssos } 1969313Ssos linux_flock->l_whence = bsd_flock->l_whence; 1979313Ssos linux_flock->l_start = (linux_off_t)bsd_flock->l_start; 1989313Ssos linux_flock->l_len = (linux_off_t)bsd_flock->l_len; 1999313Ssos linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid; 2009313Ssos} 2019313Ssos 2029313Ssosint 20330994Sphklinux_fcntl(struct proc *p, struct linux_fcntl_args *args) 2049313Ssos{ 2059313Ssos int error, result; 20612858Speter struct fcntl_args /* { 2079313Ssos int fd; 2089313Ssos int cmd; 20968662Smarcel long arg; 21068662Smarcel } */ fcntl_args; 2119313Ssos struct linux_flock linux_flock; 21214331Speter struct flock *bsd_flock; 21368662Smarcel struct filedesc *fdp; 21468662Smarcel struct file *fp; 21514331Speter caddr_t sg; 2169313Ssos 21714331Speter sg = stackgap_init(); 21814331Speter bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock)); 21914331Speter 2209313Ssos#ifdef DEBUG 22172543Sjlemon if (ldebug(fcntl)) 22272543Sjlemon printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd); 2239313Ssos#endif 2249313Ssos fcntl_args.fd = args->fd; 2259313Ssos 2269313Ssos switch (args->cmd) { 2279313Ssos case LINUX_F_DUPFD: 2289313Ssos fcntl_args.cmd = F_DUPFD; 22949845Smarcel fcntl_args.arg = args->arg; 23030994Sphk return fcntl(p, &fcntl_args); 2319313Ssos 2329313Ssos case LINUX_F_GETFD: 2339313Ssos fcntl_args.cmd = F_GETFD; 23430994Sphk return fcntl(p, &fcntl_args); 2359313Ssos 2369313Ssos case LINUX_F_SETFD: 2379313Ssos fcntl_args.cmd = F_SETFD; 23849845Smarcel fcntl_args.arg = args->arg; 23930994Sphk return fcntl(p, &fcntl_args); 2409313Ssos 2419313Ssos case LINUX_F_GETFL: 2429313Ssos fcntl_args.cmd = F_GETFL; 24330994Sphk error = fcntl(p, &fcntl_args); 24430994Sphk result = p->p_retval[0]; 24530994Sphk p->p_retval[0] = 0; 24630994Sphk if (result & O_RDONLY) p->p_retval[0] |= LINUX_O_RDONLY; 24730994Sphk if (result & O_WRONLY) p->p_retval[0] |= LINUX_O_WRONLY; 24830994Sphk if (result & O_RDWR) p->p_retval[0] |= LINUX_O_RDWR; 24930994Sphk if (result & O_NDELAY) p->p_retval[0] |= LINUX_O_NONBLOCK; 25030994Sphk if (result & O_APPEND) p->p_retval[0] |= LINUX_O_APPEND; 25130994Sphk if (result & O_FSYNC) p->p_retval[0] |= LINUX_O_SYNC; 25239978Sjfieber if (result & O_ASYNC) p->p_retval[0] |= LINUX_FASYNC; 2539313Ssos return error; 2549313Ssos 2559313Ssos case LINUX_F_SETFL: 25649845Smarcel fcntl_args.arg = 0; 2579313Ssos if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK; 2589313Ssos if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND; 2599313Ssos if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC; 26039978Sjfieber if (args->arg & LINUX_FASYNC) fcntl_args.arg |= O_ASYNC; 2619313Ssos fcntl_args.cmd = F_SETFL; 26230994Sphk return fcntl(p, &fcntl_args); 26349676Smarcel 2649313Ssos case LINUX_F_GETLK: 2659313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2669313Ssos sizeof(struct linux_flock)))) 2679313Ssos return error; 2689313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2699313Ssos fcntl_args.cmd = F_GETLK; 27068201Sobrien fcntl_args.arg = (long)bsd_flock; 27146571Speter error = fcntl(p, &fcntl_args); 27246571Speter if (error) 2739313Ssos return error; 2749313Ssos bsd_to_linux_flock(bsd_flock, &linux_flock); 2759313Ssos return copyout((caddr_t)&linux_flock, (caddr_t)args->arg, 2769313Ssos sizeof(struct linux_flock)); 2779313Ssos 2789313Ssos case LINUX_F_SETLK: 2799313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2809313Ssos sizeof(struct linux_flock)))) 2819313Ssos return error; 2829313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2839313Ssos fcntl_args.cmd = F_SETLK; 28468201Sobrien fcntl_args.arg = (long)bsd_flock; 28530994Sphk return fcntl(p, &fcntl_args); 2869313Ssos 2879313Ssos case LINUX_F_SETLKW: 2889313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2899313Ssos sizeof(struct linux_flock)))) 2909313Ssos return error; 2919313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2929313Ssos fcntl_args.cmd = F_SETLKW; 29368201Sobrien fcntl_args.arg = (long)bsd_flock; 29430994Sphk return fcntl(p, &fcntl_args); 2959313Ssos 29663233Smarcel case LINUX_F_GETOWN: 29763233Smarcel fcntl_args.cmd = F_GETOWN; 29863233Smarcel return fcntl(p, &fcntl_args); 29963233Smarcel 3009313Ssos case LINUX_F_SETOWN: 30168662Smarcel /* 30268662Smarcel * XXX some Linux applications depend on F_SETOWN having no 30368662Smarcel * significant effect for pipes (SIGIO is not delivered for 30468662Smarcel * pipes under Linux-2.2.35 at least). 30568662Smarcel */ 30668662Smarcel fdp = p->p_fd; 30768662Smarcel if ((u_int)args->fd >= fdp->fd_nfiles || 30868662Smarcel (fp = fdp->fd_ofiles[args->fd]) == NULL) 30968662Smarcel return EBADF; 31068662Smarcel if (fp->f_type == DTYPE_PIPE) 31168662Smarcel return EINVAL; 31268662Smarcel 31368662Smarcel fcntl_args.cmd = F_SETOWN; 31463233Smarcel fcntl_args.arg = args->arg; 31563233Smarcel return fcntl(p, &fcntl_args); 3169313Ssos } 3179313Ssos return EINVAL; 3189313Ssos} 3199313Ssos 3209313Ssosint 32130994Sphklinux_lseek(struct proc *p, struct linux_lseek_args *args) 3229313Ssos{ 3239313Ssos 32412858Speter struct lseek_args /* { 32512858Speter int fd; 3269313Ssos int pad; 32712858Speter off_t offset; 3289313Ssos int whence; 32912858Speter } */ tmp_args; 3309313Ssos int error; 3319313Ssos 3329313Ssos#ifdef DEBUG 33372543Sjlemon if (ldebug(lseek)) 33472543Sjlemon printf(ARGS(lseek, "%d, %ld, %d"), 33572543Sjlemon args->fdes, args->off, args->whence); 3369313Ssos#endif 33712858Speter tmp_args.fd = args->fdes; 33812858Speter tmp_args.offset = (off_t)args->off; 3399313Ssos tmp_args.whence = args->whence; 34030994Sphk error = lseek(p, &tmp_args); 3419313Ssos return error; 3429313Ssos} 3439313Ssos 34468201Sobrien#ifndef __alpha__ 34514331Speterint 34630994Sphklinux_llseek(struct proc *p, struct linux_llseek_args *args) 34714331Speter{ 34814331Speter struct lseek_args bsd_args; 34914331Speter int error; 35014331Speter off_t off; 35114331Speter 35214331Speter#ifdef DEBUG 35372543Sjlemon if (ldebug(llseek)) 35472543Sjlemon printf(ARGS(llseek, "%d, %d:%d, %d"), 35572543Sjlemon args->fd, args->ohigh, args->olow, args->whence); 35614331Speter#endif 35714331Speter off = (args->olow) | (((off_t) args->ohigh) << 32); 35814331Speter 35914331Speter bsd_args.fd = args->fd; 36014331Speter bsd_args.offset = off; 36114331Speter bsd_args.whence = args->whence; 36214331Speter 36330994Sphk if ((error = lseek(p, &bsd_args))) 36414331Speter return error; 36514331Speter 36630994Sphk if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t)))) 36714331Speter return error; 36814331Speter 36930994Sphk p->p_retval[0] = 0; 37014331Speter return 0; 37114331Speter} 37268201Sobrien#endif /*!__alpha__*/ 37314331Speter 37414331Speter 3759313Ssosstruct linux_dirent { 3769313Ssos long dino; 3779313Ssos linux_off_t doff; 3789313Ssos unsigned short dreclen; 3799313Ssos char dname[LINUX_NAME_MAX + 1]; 3809313Ssos}; 3819313Ssos 3829313Ssos#define LINUX_RECLEN(de,namlen) \ 3839313Ssos ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1)) 3849313Ssos 38568201Sobrien#ifndef __alpha__ 3869313Ssosint 38730994Sphklinux_readdir(struct proc *p, struct linux_readdir_args *args) 3889313Ssos{ 38914331Speter struct linux_getdents_args lda; 39014331Speter 39114331Speter lda.fd = args->fd; 39214331Speter lda.dent = args->dent; 39314331Speter lda.count = 1; 39430994Sphk return linux_getdents(p, &lda); 39514331Speter} 39668201Sobrien#endif /*!__alpha__*/ 39714331Speter 39814331Speterint 39930994Sphklinux_getdents(struct proc *p, struct linux_getdents_args *args) 40014331Speter{ 4019313Ssos register struct dirent *bdp; 4029313Ssos struct vnode *vp; 4039313Ssos caddr_t inp, buf; /* BSD-format */ 4049313Ssos int len, reclen; /* BSD-format */ 4059313Ssos caddr_t outp; /* Linux-format */ 4069313Ssos int resid, linuxreclen=0; /* Linux-format */ 4079313Ssos struct file *fp; 4089313Ssos struct uio auio; 4099313Ssos struct iovec aiov; 4109313Ssos struct vattr va; 4119313Ssos off_t off; 4129313Ssos struct linux_dirent linux_dirent; 41324654Sdfr int buflen, error, eofflag, nbytes, justone; 41424654Sdfr u_long *cookies = NULL, *cookiep; 41524654Sdfr int ncookies; 4169313Ssos 4179313Ssos#ifdef DEBUG 41872543Sjlemon if (ldebug(getdents)) 41972543Sjlemon printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count); 4209313Ssos#endif 42110355Sswallace if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) { 4229313Ssos return (error); 42314331Speter } 4249313Ssos 4259313Ssos if ((fp->f_flag & FREAD) == 0) 4269313Ssos return (EBADF); 4279313Ssos 4289313Ssos vp = (struct vnode *) fp->f_data; 4299313Ssos 4309313Ssos if (vp->v_type != VDIR) 4319313Ssos return (EINVAL); 4329313Ssos 43371699Sjhb if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) { 4349313Ssos return error; 43511418Sswallace } 4369313Ssos 4379313Ssos nbytes = args->count; 4389313Ssos if (nbytes == 1) { 4399313Ssos nbytes = sizeof (struct linux_dirent); 4409313Ssos justone = 1; 4419313Ssos } 4429313Ssos else 4439313Ssos justone = 0; 4449313Ssos 44510355Sswallace off = fp->f_offset; 44624672Sdfr#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */ 44724654Sdfr buflen = max(DIRBLKSIZ, nbytes); 44811418Sswallace buflen = min(buflen, MAXBSIZE); 4499313Ssos buf = malloc(buflen, M_TEMP, M_WAITOK); 45022521Sdyson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); 4519313Ssosagain: 4529313Ssos aiov.iov_base = buf; 4539313Ssos aiov.iov_len = buflen; 4549313Ssos auio.uio_iov = &aiov; 4559313Ssos auio.uio_iovcnt = 1; 4569313Ssos auio.uio_rw = UIO_READ; 4579313Ssos auio.uio_segflg = UIO_SYSSPACE; 4589313Ssos auio.uio_procp = p; 4599313Ssos auio.uio_resid = buflen; 46024654Sdfr auio.uio_offset = off; 4619313Ssos 46224654Sdfr if (cookies) { 46324654Sdfr free(cookies, M_TEMP); 46424654Sdfr cookies = NULL; 46524654Sdfr } 46624654Sdfr 46724654Sdfr error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies); 46810355Sswallace if (error) { 4699313Ssos goto out; 47014331Speter } 4719313Ssos 4729313Ssos inp = buf; 4739313Ssos outp = (caddr_t) args->dent; 4749313Ssos resid = nbytes; 47524654Sdfr if ((len = buflen - auio.uio_resid) <= 0) { 4769313Ssos goto eof; 47714331Speter } 4789313Ssos 47924654Sdfr cookiep = cookies; 48024654Sdfr 48124654Sdfr if (cookies) { 48224654Sdfr /* 48324654Sdfr * When using cookies, the vfs has the option of reading from 48424654Sdfr * a different offset than that supplied (UFS truncates the 48524654Sdfr * offset to a block boundary to make sure that it never reads 48624654Sdfr * partway through a directory entry, even if the directory 48724654Sdfr * has been compacted). 48824654Sdfr */ 48924654Sdfr while (len > 0 && ncookies > 0 && *cookiep <= off) { 49024654Sdfr bdp = (struct dirent *) inp; 49124654Sdfr len -= bdp->d_reclen; 49224654Sdfr inp += bdp->d_reclen; 49324654Sdfr cookiep++; 49424654Sdfr ncookies--; 49524654Sdfr } 49624654Sdfr } 49724654Sdfr 4989313Ssos while (len > 0) { 49924654Sdfr if (cookiep && ncookies == 0) 50024654Sdfr break; 50110355Sswallace bdp = (struct dirent *) inp; 50210355Sswallace reclen = bdp->d_reclen; 50310355Sswallace if (reclen & 3) { 50410355Sswallace printf("linux_readdir: reclen=%d\n", reclen); 50510355Sswallace error = EFAULT; 50610355Sswallace goto out; 50710355Sswallace } 50810355Sswallace 5099313Ssos if (bdp->d_fileno == 0) { 5109313Ssos inp += reclen; 51124654Sdfr if (cookiep) { 51224654Sdfr off = *cookiep++; 51324654Sdfr ncookies--; 51424654Sdfr } else 51524654Sdfr off += reclen; 51610355Sswallace len -= reclen; 5179313Ssos continue; 5189313Ssos } 5199313Ssos linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 5209313Ssos if (reclen > len || resid < linuxreclen) { 5219313Ssos outp++; 5229313Ssos break; 5239313Ssos } 5249313Ssos linux_dirent.dino = (long) bdp->d_fileno; 52514465Speter if (justone) { 52614465Speter /* 52714465Speter * old linux-style readdir usage. 52814465Speter */ 52914465Speter linux_dirent.doff = (linux_off_t) linuxreclen; 53014465Speter linux_dirent.dreclen = (u_short) bdp->d_namlen; 53114465Speter } else { 53268347Smarcel if (cookiep) 53368347Smarcel linux_dirent.doff = (linux_off_t)*cookiep; 53468347Smarcel else 53568347Smarcel linux_dirent.doff = (linux_off_t)(off + reclen); 53614465Speter linux_dirent.dreclen = (u_short) linuxreclen; 53714465Speter } 5389313Ssos strcpy(linux_dirent.dname, bdp->d_name); 53910355Sswallace if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) { 5409313Ssos goto out; 54114331Speter } 5429313Ssos inp += reclen; 54324654Sdfr if (cookiep) { 54424654Sdfr off = *cookiep++; 54524654Sdfr ncookies--; 54624654Sdfr } else 54724654Sdfr off += reclen; 5489313Ssos outp += linuxreclen; 5499313Ssos resid -= linuxreclen; 5509313Ssos len -= reclen; 5519313Ssos if (justone) 5529313Ssos break; 5539313Ssos } 5549313Ssos 5559313Ssos if (outp == (caddr_t) args->dent) 5569313Ssos goto again; 5579313Ssos fp->f_offset = off; 5589313Ssos 5599313Ssos if (justone) 5609313Ssos nbytes = resid + linuxreclen; 56110355Sswallace 5629313Ssoseof: 56330994Sphk p->p_retval[0] = nbytes - resid; 5649313Ssosout: 56524654Sdfr if (cookies) 56624654Sdfr free(cookies, M_TEMP); 56722543Smpp VOP_UNLOCK(vp, 0, p); 5689313Ssos free(buf, M_TEMP); 5699313Ssos return error; 5709313Ssos} 57114331Speter 57214331Speter/* 57314331Speter * These exist mainly for hooks for doing /compat/linux translation. 57414331Speter */ 57514331Speter 57614331Speterint 57730994Sphklinux_access(struct proc *p, struct linux_access_args *args) 57814331Speter{ 57914331Speter struct access_args bsd; 58014331Speter caddr_t sg; 58114331Speter 58214331Speter sg = stackgap_init(); 58314331Speter CHECKALTEXIST(p, &sg, args->path); 58414331Speter 58514331Speter#ifdef DEBUG 58672543Sjlemon if (ldebug(access)) 58772543Sjlemon printf(ARGS(access, "%s, %d"), args->path, args->flags); 58814331Speter#endif 58914331Speter bsd.path = args->path; 59014331Speter bsd.flags = args->flags; 59114331Speter 59230994Sphk return access(p, &bsd); 59314331Speter} 59414331Speter 59514331Speterint 59630994Sphklinux_unlink(struct proc *p, struct linux_unlink_args *args) 59714331Speter{ 59814331Speter struct unlink_args bsd; 59914331Speter caddr_t sg; 60014331Speter 60114331Speter sg = stackgap_init(); 60214331Speter CHECKALTEXIST(p, &sg, args->path); 60314331Speter 60414331Speter#ifdef DEBUG 60572543Sjlemon if (ldebug(unlink)) 60672543Sjlemon printf(ARGS(unlink, "%s"), args->path); 60714331Speter#endif 60814331Speter bsd.path = args->path; 60914331Speter 61030994Sphk return unlink(p, &bsd); 61114331Speter} 61214331Speter 61314331Speterint 61430994Sphklinux_chdir(struct proc *p, struct linux_chdir_args *args) 61514331Speter{ 61614331Speter struct chdir_args bsd; 61714331Speter caddr_t sg; 61814331Speter 61914331Speter sg = stackgap_init(); 62014331Speter CHECKALTEXIST(p, &sg, args->path); 62114331Speter 62214331Speter#ifdef DEBUG 62372543Sjlemon if (ldebug(chdir)) 62472543Sjlemon printf(ARGS(chdir, "%s"), args->path); 62514331Speter#endif 62614331Speter bsd.path = args->path; 62714331Speter 62830994Sphk return chdir(p, &bsd); 62914331Speter} 63014331Speter 63114331Speterint 63230994Sphklinux_chmod(struct proc *p, struct linux_chmod_args *args) 63314331Speter{ 63414331Speter struct chmod_args bsd; 63514331Speter caddr_t sg; 63614331Speter 63714331Speter sg = stackgap_init(); 63814331Speter CHECKALTEXIST(p, &sg, args->path); 63914331Speter 64014331Speter#ifdef DEBUG 64172543Sjlemon if (ldebug(chmod)) 64272543Sjlemon printf(ARGS(chmod, "%s, %d"), args->path, args->mode); 64314331Speter#endif 64414331Speter bsd.path = args->path; 64514331Speter bsd.mode = args->mode; 64614331Speter 64730994Sphk return chmod(p, &bsd); 64814331Speter} 64914331Speter 65014331Speterint 65130994Sphklinux_chown(struct proc *p, struct linux_chown_args *args) 65214331Speter{ 65314331Speter struct chown_args bsd; 65414331Speter caddr_t sg; 65514331Speter 65614331Speter sg = stackgap_init(); 65714331Speter CHECKALTEXIST(p, &sg, args->path); 65814331Speter 65914331Speter#ifdef DEBUG 66072543Sjlemon if (ldebug(chown)) 66172543Sjlemon printf(ARGS(chown, "%s, %d, %d"), 66272543Sjlemon args->path, args->uid, args->gid); 66314331Speter#endif 66414331Speter bsd.path = args->path; 66514331Speter /* XXX size casts here */ 66614331Speter bsd.uid = args->uid; 66714331Speter bsd.gid = args->gid; 66814331Speter 66930994Sphk return chown(p, &bsd); 67014331Speter} 67114331Speter 67214331Speterint 67334941Speterlinux_lchown(struct proc *p, struct linux_lchown_args *args) 67434941Speter{ 67534941Speter struct lchown_args bsd; 67634941Speter caddr_t sg; 67734941Speter 67834941Speter sg = stackgap_init(); 67934941Speter CHECKALTEXIST(p, &sg, args->path); 68034941Speter 68134941Speter#ifdef DEBUG 68272543Sjlemon if (ldebug(lchown)) 68372543Sjlemon printf(ARGS(lchown, "%s, %d, %d"), 68472543Sjlemon args->path, args->uid, args->gid); 68534941Speter#endif 68634941Speter bsd.path = args->path; 68734941Speter /* XXX size casts here */ 68834941Speter bsd.uid = args->uid; 68934941Speter bsd.gid = args->gid; 69034941Speter 69134941Speter return lchown(p, &bsd); 69234941Speter} 69334941Speter 69434941Speterint 69530994Sphklinux_mkdir(struct proc *p, struct linux_mkdir_args *args) 69614331Speter{ 69714331Speter struct mkdir_args bsd; 69814331Speter caddr_t sg; 69914331Speter 70014331Speter sg = stackgap_init(); 70114331Speter CHECKALTCREAT(p, &sg, args->path); 70214331Speter 70314331Speter#ifdef DEBUG 70472543Sjlemon if (ldebug(mkdir)) 70572543Sjlemon printf(ARGS(mkdir, "%s, %d"), args->path, args->mode); 70614331Speter#endif 70714331Speter bsd.path = args->path; 70814331Speter bsd.mode = args->mode; 70914331Speter 71030994Sphk return mkdir(p, &bsd); 71114331Speter} 71214331Speter 71314331Speterint 71430994Sphklinux_rmdir(struct proc *p, struct linux_rmdir_args *args) 71514331Speter{ 71614331Speter struct rmdir_args bsd; 71714331Speter caddr_t sg; 71814331Speter 71914331Speter sg = stackgap_init(); 72014331Speter CHECKALTEXIST(p, &sg, args->path); 72114331Speter 72214331Speter#ifdef DEBUG 72372543Sjlemon if (ldebug(rmdir)) 72472543Sjlemon printf(ARGS(rmdir, "%s"), args->path); 72514331Speter#endif 72614331Speter bsd.path = args->path; 72714331Speter 72830994Sphk return rmdir(p, &bsd); 72914331Speter} 73014331Speter 73114331Speterint 73230994Sphklinux_rename(struct proc *p, struct linux_rename_args *args) 73314331Speter{ 73414331Speter struct rename_args bsd; 73514331Speter caddr_t sg; 73614331Speter 73714331Speter sg = stackgap_init(); 73814331Speter CHECKALTEXIST(p, &sg, args->from); 73914331Speter CHECKALTCREAT(p, &sg, args->to); 74014331Speter 74114331Speter#ifdef DEBUG 74272543Sjlemon if (ldebug(rename)) 74372543Sjlemon printf(ARGS(rename, "%s, %s"), args->from, args->to); 74414331Speter#endif 74514331Speter bsd.from = args->from; 74614331Speter bsd.to = args->to; 74714331Speter 74830994Sphk return rename(p, &bsd); 74914331Speter} 75014331Speter 75114331Speterint 75230994Sphklinux_symlink(struct proc *p, struct linux_symlink_args *args) 75314331Speter{ 75414331Speter struct symlink_args bsd; 75514331Speter caddr_t sg; 75614331Speter 75714331Speter sg = stackgap_init(); 75814331Speter CHECKALTEXIST(p, &sg, args->path); 75914331Speter CHECKALTCREAT(p, &sg, args->to); 76014331Speter 76114331Speter#ifdef DEBUG 76272543Sjlemon if (ldebug(symlink)) 76372543Sjlemon printf(ARGS(symlink, "%s, %s"), args->path, args->to); 76414331Speter#endif 76514331Speter bsd.path = args->path; 76614331Speter bsd.link = args->to; 76714331Speter 76830994Sphk return symlink(p, &bsd); 76914331Speter} 77014331Speter 77114331Speterint 77230994Sphklinux_readlink(struct proc *p, struct linux_readlink_args *args) 77314331Speter{ 77414331Speter struct readlink_args bsd; 77514331Speter caddr_t sg; 77614331Speter 77714331Speter sg = stackgap_init(); 77814331Speter CHECKALTEXIST(p, &sg, args->name); 77914331Speter 78014331Speter#ifdef DEBUG 78172543Sjlemon if (ldebug(readlink)) 78272543Sjlemon printf(ARGS(readlink, "%s, %p, %d"), 78372543Sjlemon args->name, (void *)args->buf, args->count); 78414331Speter#endif 78514331Speter bsd.path = args->name; 78614331Speter bsd.buf = args->buf; 78714331Speter bsd.count = args->count; 78814331Speter 78930994Sphk return readlink(p, &bsd); 79014331Speter} 79114331Speter 79214331Speterint 79330994Sphklinux_truncate(struct proc *p, struct linux_truncate_args *args) 79414331Speter{ 79542499Seivind struct truncate_args bsd; 79614331Speter caddr_t sg; 79714331Speter 79814331Speter sg = stackgap_init(); 79914331Speter CHECKALTEXIST(p, &sg, args->path); 80014331Speter 80114331Speter#ifdef DEBUG 80272543Sjlemon if (ldebug(truncate)) 80372543Sjlemon printf(ARGS(truncate, "%s, %ld"), args->path, args->length); 80414331Speter#endif 80514331Speter bsd.path = args->path; 80632265Sjmb bsd.length = args->length; 80714331Speter 80842499Seivind return truncate(p, &bsd); 80914331Speter} 81014331Speter 81149662Smarcelint 81249662Smarcellinux_link(struct proc *p, struct linux_link_args *args) 81349662Smarcel{ 81449662Smarcel struct link_args bsd; 81549662Smarcel caddr_t sg; 81649662Smarcel 81749662Smarcel sg = stackgap_init(); 81849662Smarcel CHECKALTEXIST(p, &sg, args->path); 81949662Smarcel CHECKALTCREAT(p, &sg, args->to); 82049662Smarcel 82149662Smarcel#ifdef DEBUG 82272543Sjlemon if (ldebug(link)) 82372543Sjlemon printf(ARGS(link, "%s, %s"), args->path, args->to); 82449662Smarcel#endif 82549662Smarcel 82649662Smarcel bsd.path = args->path; 82749662Smarcel bsd.link = args->to; 82849662Smarcel 82949662Smarcel return link(p, &bsd); 83049662Smarcel} 83149788Smarcel 83249788Smarcelint 83349788Smarcellinux_getcwd(struct proc *p, struct linux_getcwd_args *args) 83449788Smarcel{ 83551348Smarcel struct __getcwd_args bsd; 83651348Smarcel caddr_t sg; 83751348Smarcel int error, len; 83849788Smarcel 83949788Smarcel#ifdef DEBUG 84072543Sjlemon if (ldebug(getcwd)) 84172543Sjlemon printf(ARGS(getcwd, "%p, %ld"), args->buf, args->bufsize); 84249788Smarcel#endif 84349788Smarcel 84451348Smarcel sg = stackgap_init(); 84551348Smarcel bsd.buf = stackgap_alloc(&sg, SPARE_USRSPACE); 84651348Smarcel bsd.buflen = SPARE_USRSPACE; 84751348Smarcel error = __getcwd(p, &bsd); 84851348Smarcel if (!error) { 84951348Smarcel len = strlen(bsd.buf) + 1; 85051348Smarcel if (len <= args->bufsize) { 85151348Smarcel p->p_retval[0] = len; 85251348Smarcel error = copyout(bsd.buf, args->buf, len); 85351348Smarcel } 85451348Smarcel else 85551348Smarcel error = ERANGE; 85651348Smarcel } 85751348Smarcel return (error); 85849788Smarcel} 85953713Smarcel 86068201Sobrien#ifndef __alpha__ 86153713Smarcelint 86253713Smarcellinux_fdatasync(p, uap) 86353713Smarcel struct proc *p; 86453713Smarcel struct linux_fdatasync_args *uap; 86553713Smarcel{ 86653713Smarcel struct fsync_args bsd; 86753713Smarcel 86853713Smarcel bsd.fd = uap->fd; 86953713Smarcel return fsync(p, &bsd); 87053713Smarcel} 87168201Sobrien#endif /*!__alpha__*/ 87263285Smarcel 87363285Smarcelint 87463285Smarcellinux_pread(p, uap) 87563285Smarcel struct proc *p; 87663285Smarcel struct linux_pread_args *uap; 87763285Smarcel{ 87863285Smarcel struct pread_args bsd; 87963285Smarcel 88063285Smarcel bsd.fd = uap->fd; 88163285Smarcel bsd.buf = uap->buf; 88263285Smarcel bsd.nbyte = uap->nbyte; 88363285Smarcel bsd.offset = uap->offset; 88463285Smarcel return pread(p, &bsd); 88563285Smarcel} 88663285Smarcel 88763285Smarcelint 88863285Smarcellinux_pwrite(p, uap) 88963285Smarcel struct proc *p; 89063285Smarcel struct linux_pwrite_args *uap; 89163285Smarcel{ 89263285Smarcel struct pwrite_args bsd; 89363285Smarcel 89463285Smarcel bsd.fd = uap->fd; 89563285Smarcel bsd.buf = uap->buf; 89663285Smarcel bsd.nbyte = uap->nbyte; 89763285Smarcel bsd.offset = uap->offset; 89863285Smarcel return pwrite(p, &bsd); 89963285Smarcel} 90072538Sjlemon 90172538Sjlemonint 90272538Sjlemonlinux_mount(struct proc *p, struct linux_mount_args *args) 90372538Sjlemon{ 90472538Sjlemon struct ufs_args ufs; 90572538Sjlemon char fstypename[MFSNAMELEN]; 90672538Sjlemon char mntonname[MNAMELEN], mntfromname[MNAMELEN]; 90773286Sadrian int error; 90873286Sadrian int fsflags; 90973286Sadrian const char *fstype; 91073286Sadrian void *fsdata; 91172538Sjlemon 91273286Sadrian error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1, 91373286Sadrian NULL); 91472538Sjlemon if (error) 91572538Sjlemon return (error); 91672538Sjlemon error = copyinstr(args->specialfile, mntfromname, MFSNAMELEN - 1, NULL); 91772538Sjlemon if (error) 91872538Sjlemon return (error); 91972538Sjlemon error = copyinstr(args->dir, mntonname, MFSNAMELEN - 1, NULL); 92072538Sjlemon if (error) 92172538Sjlemon return (error); 92272538Sjlemon 92372538Sjlemon#ifdef DEBUG 92472538Sjlemon if (ldebug(mount)) 92572538Sjlemon printf(ARGS(mount, "%s, %s, %s"), 92672538Sjlemon fstypename, mntfromname, mntonname); 92772538Sjlemon#endif 92872538Sjlemon 92972538Sjlemon if (strcmp(fstypename, "ext2") == 0) { 93073286Sadrian fstype = "ext2fs"; 93173286Sadrian fsdata = &ufs; 93272538Sjlemon ufs.fspec = mntfromname; 93372538Sjlemon#define DEFAULT_ROOTID -2 93472538Sjlemon ufs.export.ex_root = DEFAULT_ROOTID; 93572538Sjlemon ufs.export.ex_flags = 93672538Sjlemon args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0; 93772538Sjlemon } else if (strcmp(fstypename, "proc") == 0) { 93873286Sadrian fstype = "linprocfs"; 93973286Sadrian fsdata = NULL; 94072538Sjlemon } else { 94172538Sjlemon return (ENODEV); 94272538Sjlemon } 94372538Sjlemon 94473286Sadrian fsflags = 0; 94572538Sjlemon 94672538Sjlemon if ((args->rwflag & 0xffff0000) == 0xc0ed0000) { 94772538Sjlemon /* 94872538Sjlemon * Linux SYNC flag is not included; the closest equivalent 94972538Sjlemon * FreeBSD has is !ASYNC, which is our default. 95072538Sjlemon */ 95172538Sjlemon if (args->rwflag & LINUX_MS_RDONLY) 95273286Sadrian fsflags |= MNT_RDONLY; 95372538Sjlemon if (args->rwflag & LINUX_MS_NOSUID) 95473286Sadrian fsflags |= MNT_NOSUID; 95572538Sjlemon if (args->rwflag & LINUX_MS_NODEV) 95673286Sadrian fsflags |= MNT_NODEV; 95772538Sjlemon if (args->rwflag & LINUX_MS_NOEXEC) 95873286Sadrian fsflags |= MNT_NOEXEC; 95972538Sjlemon if (args->rwflag & LINUX_MS_REMOUNT) 96073286Sadrian fsflags |= MNT_UPDATE; 96172538Sjlemon } 96272538Sjlemon 96373286Sadrian return (vfs_mount(p, fstype, mntonname, fsflags, fsdata)); 96472538Sjlemon} 96572538Sjlemon 96672538Sjlemonint 96772538Sjlemonlinux_umount(struct proc *p, struct linux_umount_args *args) 96872538Sjlemon{ 96972538Sjlemon struct linux_umount2_args args2; 97072538Sjlemon 97172538Sjlemon args2.path = args->path; 97272538Sjlemon args2.flags = 0; 97372538Sjlemon return (linux_umount2(p, &args2)); 97472538Sjlemon} 97572538Sjlemon 97672538Sjlemonint 97772538Sjlemonlinux_umount2(struct proc *p, struct linux_umount2_args *args) 97872538Sjlemon{ 97972538Sjlemon struct unmount_args bsd; 98072538Sjlemon 98172538Sjlemon bsd.path = args->path; 98272538Sjlemon bsd.flags = args->flags; /* XXX correct? */ 98372538Sjlemon return (unmount(p, &bsd)); 98472538Sjlemon} 985