linux_file.c revision 49662
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 * 2849662Smarcel * $Id: linux_file.c,v 1.27 1999/07/18 14:31:01 phk Exp $ 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> 439313Ssos#include <sys/dirent.h> 4414331Speter#include <sys/conf.h> 4514331Speter#include <sys/tty.h> 4612458Sbde 4712458Sbde#include <i386/linux/linux.h> 4814331Speter#include <i386/linux/linux_proto.h> 4914331Speter#include <i386/linux/linux_util.h> 509313Ssos 519313Ssosint 5230994Sphklinux_creat(struct proc *p, struct linux_creat_args *args) 539313Ssos{ 5412858Speter struct open_args /* { 559313Ssos char *path; 569313Ssos int flags; 579313Ssos int mode; 5812858Speter } */ bsd_open_args; 5914331Speter caddr_t sg; 609313Ssos 6114331Speter sg = stackgap_init(); 6214331Speter CHECKALTCREAT(p, &sg, args->path); 6314331Speter 649313Ssos#ifdef DEBUG 659313Ssos printf("Linux-emul(%d): creat(%s, %d)\n", 669313Ssos p->p_pid, args->path, args->mode); 679313Ssos#endif 689313Ssos bsd_open_args.path = args->path; 699313Ssos bsd_open_args.mode = args->mode; 709313Ssos bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC; 7130994Sphk return open(p, &bsd_open_args); 729313Ssos} 739313Ssos 749313Ssosint 7530994Sphklinux_open(struct proc *p, struct linux_open_args *args) 769313Ssos{ 7712858Speter struct open_args /* { 789313Ssos char *path; 799313Ssos int flags; 809313Ssos int mode; 8112858Speter } */ bsd_open_args; 829313Ssos int error; 8314331Speter caddr_t sg; 8414331Speter 8514331Speter sg = stackgap_init(); 869313Ssos 8714331Speter if (args->flags & LINUX_O_CREAT) 8814331Speter CHECKALTCREAT(p, &sg, args->path); 8914331Speter else 9014331Speter CHECKALTEXIST(p, &sg, args->path); 9114331Speter 929313Ssos#ifdef DEBUG 939313Ssos printf("Linux-emul(%d): open(%s, 0x%x, 0x%x)\n", 949313Ssos p->p_pid, args->path, args->flags, args->mode); 959313Ssos#endif 969313Ssos bsd_open_args.flags = 0; 979313Ssos if (args->flags & LINUX_O_RDONLY) 989313Ssos bsd_open_args.flags |= O_RDONLY; 999313Ssos if (args->flags & LINUX_O_WRONLY) 1009313Ssos bsd_open_args.flags |= O_WRONLY; 1019313Ssos if (args->flags & LINUX_O_RDWR) 1029313Ssos bsd_open_args.flags |= O_RDWR; 1039313Ssos if (args->flags & LINUX_O_NDELAY) 1049313Ssos bsd_open_args.flags |= O_NONBLOCK; 1059313Ssos if (args->flags & LINUX_O_APPEND) 1069313Ssos bsd_open_args.flags |= O_APPEND; 1079313Ssos if (args->flags & LINUX_O_SYNC) 1089313Ssos bsd_open_args.flags |= O_FSYNC; 1099313Ssos if (args->flags & LINUX_O_NONBLOCK) 1109313Ssos bsd_open_args.flags |= O_NONBLOCK; 1119313Ssos if (args->flags & LINUX_FASYNC) 1129313Ssos bsd_open_args.flags |= O_ASYNC; 1139313Ssos if (args->flags & LINUX_O_CREAT) 1149313Ssos bsd_open_args.flags |= O_CREAT; 1159313Ssos if (args->flags & LINUX_O_TRUNC) 1169313Ssos bsd_open_args.flags |= O_TRUNC; 1179313Ssos if (args->flags & LINUX_O_EXCL) 1189313Ssos bsd_open_args.flags |= O_EXCL; 1199313Ssos if (args->flags & LINUX_O_NOCTTY) 1209313Ssos bsd_open_args.flags |= O_NOCTTY; 1219313Ssos bsd_open_args.path = args->path; 1229313Ssos bsd_open_args.mode = args->mode; 1239313Ssos 12430994Sphk error = open(p, &bsd_open_args); 1259313Ssos if (!error && !(bsd_open_args.flags & O_NOCTTY) && 1269313Ssos SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) { 1279313Ssos struct filedesc *fdp = p->p_fd; 12830994Sphk struct file *fp = fdp->fd_ofiles[p->p_retval[0]]; 1299313Ssos 1309313Ssos if (fp->f_type == DTYPE_VNODE) 1319313Ssos (fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t) 0, p); 1329313Ssos } 13314331Speter#ifdef DEBUG 13414331Speter printf("Linux-emul(%d): open returns error %d\n", 13514331Speter p->p_pid, error); 13614331Speter#endif 1379313Ssos return error; 1389313Ssos} 1399313Ssos 1409313Ssosstruct linux_flock { 1419313Ssos short l_type; 1429313Ssos short l_whence; 1439313Ssos linux_off_t l_start; 1449313Ssos linux_off_t l_len; 1459313Ssos linux_pid_t l_pid; 1469313Ssos}; 1479313Ssos 1489313Ssosstatic void 1499313Ssoslinux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock) 1509313Ssos{ 1519313Ssos switch (linux_flock->l_type) { 1529313Ssos case LINUX_F_RDLCK: 1539313Ssos bsd_flock->l_type = F_RDLCK; 1549313Ssos break; 1559313Ssos case LINUX_F_WRLCK: 1569313Ssos bsd_flock->l_type = F_WRLCK; 1579313Ssos break; 1589313Ssos case LINUX_F_UNLCK: 1599313Ssos bsd_flock->l_type = F_UNLCK; 1609313Ssos break; 1619313Ssos } 1629313Ssos bsd_flock->l_whence = linux_flock->l_whence; 1639313Ssos bsd_flock->l_start = (off_t)linux_flock->l_start; 1649313Ssos bsd_flock->l_len = (off_t)linux_flock->l_len; 1659313Ssos bsd_flock->l_pid = (pid_t)linux_flock->l_pid; 1669313Ssos} 1679313Ssos 1689313Ssosstatic void 1699313Ssosbsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock) 1709313Ssos{ 1719313Ssos switch (bsd_flock->l_type) { 1729313Ssos case F_RDLCK: 1739313Ssos linux_flock->l_type = LINUX_F_RDLCK; 1749313Ssos break; 1759313Ssos case F_WRLCK: 1769313Ssos linux_flock->l_type = LINUX_F_WRLCK; 1779313Ssos break; 1789313Ssos case F_UNLCK: 1799313Ssos linux_flock->l_type = LINUX_F_UNLCK; 1809313Ssos break; 1819313Ssos } 1829313Ssos linux_flock->l_whence = bsd_flock->l_whence; 1839313Ssos linux_flock->l_start = (linux_off_t)bsd_flock->l_start; 1849313Ssos linux_flock->l_len = (linux_off_t)bsd_flock->l_len; 1859313Ssos linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid; 1869313Ssos} 1879313Ssos 1889313Ssosint 18930994Sphklinux_fcntl(struct proc *p, struct linux_fcntl_args *args) 1909313Ssos{ 1919313Ssos int error, result; 19212858Speter struct fcntl_args /* { 1939313Ssos int fd; 1949313Ssos int cmd; 1959313Ssos int arg; 19612858Speter } */ fcntl_args; 1979313Ssos struct linux_flock linux_flock; 19814331Speter struct flock *bsd_flock; 19914331Speter struct filedesc *fdp; 20014331Speter struct file *fp; 20114331Speter struct vnode *vp; 20214331Speter long pgid; 20314331Speter struct pgrp *pgrp; 20414331Speter struct tty *tp, *(*d_tty) __P((dev_t)); 20514331Speter caddr_t sg; 20647028Sphk dev_t dev; 2079313Ssos 20814331Speter sg = stackgap_init(); 20914331Speter bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock)); 21014331Speter d_tty = NULL; 21114331Speter 2129313Ssos#ifdef DEBUG 2139313Ssos printf("Linux-emul(%d): fcntl(%d, %08x, *)\n", 2149313Ssos p->p_pid, args->fd, args->cmd); 2159313Ssos#endif 2169313Ssos fcntl_args.fd = args->fd; 2179313Ssos fcntl_args.arg = 0; 2189313Ssos 2199313Ssos switch (args->cmd) { 2209313Ssos case LINUX_F_DUPFD: 2219313Ssos fcntl_args.cmd = F_DUPFD; 22230994Sphk return fcntl(p, &fcntl_args); 2239313Ssos 2249313Ssos case LINUX_F_GETFD: 2259313Ssos fcntl_args.cmd = F_GETFD; 22630994Sphk return fcntl(p, &fcntl_args); 2279313Ssos 2289313Ssos case LINUX_F_SETFD: 2299313Ssos fcntl_args.cmd = F_SETFD; 23030994Sphk return fcntl(p, &fcntl_args); 2319313Ssos 2329313Ssos case LINUX_F_GETFL: 2339313Ssos fcntl_args.cmd = F_GETFL; 23430994Sphk error = fcntl(p, &fcntl_args); 23530994Sphk result = p->p_retval[0]; 23630994Sphk p->p_retval[0] = 0; 23730994Sphk if (result & O_RDONLY) p->p_retval[0] |= LINUX_O_RDONLY; 23830994Sphk if (result & O_WRONLY) p->p_retval[0] |= LINUX_O_WRONLY; 23930994Sphk if (result & O_RDWR) p->p_retval[0] |= LINUX_O_RDWR; 24030994Sphk if (result & O_NDELAY) p->p_retval[0] |= LINUX_O_NONBLOCK; 24130994Sphk if (result & O_APPEND) p->p_retval[0] |= LINUX_O_APPEND; 24230994Sphk if (result & O_FSYNC) p->p_retval[0] |= LINUX_O_SYNC; 24339978Sjfieber if (result & O_ASYNC) p->p_retval[0] |= LINUX_FASYNC; 2449313Ssos return error; 2459313Ssos 2469313Ssos case LINUX_F_SETFL: 2479313Ssos if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK; 2489313Ssos if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND; 2499313Ssos if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC; 25039978Sjfieber if (args->arg & LINUX_FASYNC) fcntl_args.arg |= O_ASYNC; 2519313Ssos fcntl_args.cmd = F_SETFL; 25230994Sphk return fcntl(p, &fcntl_args); 2539313Ssos 2549313Ssos case LINUX_F_GETLK: 2559313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2569313Ssos sizeof(struct linux_flock)))) 2579313Ssos return error; 2589313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2599313Ssos fcntl_args.cmd = F_GETLK; 2609313Ssos fcntl_args.arg = (int)bsd_flock; 26146571Speter error = fcntl(p, &fcntl_args); 26246571Speter if (error) 2639313Ssos return error; 2649313Ssos bsd_to_linux_flock(bsd_flock, &linux_flock); 2659313Ssos return copyout((caddr_t)&linux_flock, (caddr_t)args->arg, 2669313Ssos sizeof(struct linux_flock)); 2679313Ssos 2689313Ssos case LINUX_F_SETLK: 2699313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2709313Ssos sizeof(struct linux_flock)))) 2719313Ssos return error; 2729313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2739313Ssos fcntl_args.cmd = F_SETLK; 2749313Ssos fcntl_args.arg = (int)bsd_flock; 27530994Sphk return fcntl(p, &fcntl_args); 2769313Ssos 2779313Ssos case LINUX_F_SETLKW: 2789313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2799313Ssos sizeof(struct linux_flock)))) 2809313Ssos return error; 2819313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2829313Ssos fcntl_args.cmd = F_SETLKW; 2839313Ssos fcntl_args.arg = (int)bsd_flock; 28430994Sphk return fcntl(p, &fcntl_args); 2859313Ssos 2869313Ssos case LINUX_F_SETOWN: 28714331Speter case LINUX_F_GETOWN: 28814331Speter /* 28914331Speter * We need to route around the normal fcntl() for these calls, 29014331Speter * since it uses TIOC{G,S}PGRP, which is too restrictive for 29114331Speter * Linux F_{G,S}ETOWN semantics. For sockets, this problem 29214331Speter * does not exist. 29314331Speter */ 29414331Speter fdp = p->p_fd; 29514331Speter if ((u_int)args->fd >= fdp->fd_nfiles || 29614331Speter (fp = fdp->fd_ofiles[args->fd]) == NULL) 29714331Speter return EBADF; 29814331Speter if (fp->f_type == DTYPE_SOCKET) { 29914331Speter fcntl_args.cmd = args->cmd == LINUX_F_SETOWN ? F_SETOWN : F_GETOWN; 30039978Sjfieber fcntl_args.arg = args->arg; 30130994Sphk return fcntl(p, &fcntl_args); 30214331Speter } 30314331Speter vp = (struct vnode *)fp->f_data; 30448885Sphk dev = vn_todev(vp); 30548885Sphk if (vp->v_type != VCHR || dev == NODEV) 30614331Speter return EINVAL; 30747028Sphk d_tty = devsw(dev)->d_devtotty; 30847028Sphk if (!d_tty || (!(tp = (*d_tty)(dev)))) 30914331Speter return EINVAL; 31014331Speter if (args->cmd == LINUX_F_GETOWN) { 31130994Sphk p->p_retval[0] = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 31214331Speter return 0; 31314331Speter } 31414331Speter if ((long)args->arg <= 0) { 31514331Speter pgid = -(long)args->arg; 31614331Speter } else { 31714331Speter struct proc *p1 = pfind((long)args->arg); 31814331Speter if (p1 == 0) 31914331Speter return (ESRCH); 32014331Speter pgid = (long)p1->p_pgrp->pg_id; 32114331Speter } 32214331Speter pgrp = pgfind(pgid); 32314331Speter if (pgrp == NULL || pgrp->pg_session != p->p_session) 32414331Speter return EPERM; 32514331Speter tp->t_pgrp = pgrp; 32614331Speter return 0; 3279313Ssos } 3289313Ssos return EINVAL; 3299313Ssos} 3309313Ssos 3319313Ssosint 33230994Sphklinux_lseek(struct proc *p, struct linux_lseek_args *args) 3339313Ssos{ 3349313Ssos 33512858Speter struct lseek_args /* { 33612858Speter int fd; 3379313Ssos int pad; 33812858Speter off_t offset; 3399313Ssos int whence; 34012858Speter } */ tmp_args; 3419313Ssos int error; 3429313Ssos 3439313Ssos#ifdef DEBUG 34437950Sbde printf("Linux-emul(%ld): lseek(%d, %ld, %d)\n", 34537950Sbde (long)p->p_pid, args->fdes, args->off, args->whence); 3469313Ssos#endif 34712858Speter tmp_args.fd = args->fdes; 34812858Speter tmp_args.offset = (off_t)args->off; 3499313Ssos tmp_args.whence = args->whence; 35030994Sphk error = lseek(p, &tmp_args); 3519313Ssos return error; 3529313Ssos} 3539313Ssos 35414331Speterint 35530994Sphklinux_llseek(struct proc *p, struct linux_llseek_args *args) 35614331Speter{ 35714331Speter struct lseek_args bsd_args; 35814331Speter int error; 35914331Speter off_t off; 36014331Speter 36114331Speter#ifdef DEBUG 36214331Speter printf("Linux-emul(%d): llseek(%d, %d:%d, %d)\n", 36314331Speter p->p_pid, args->fd, args->ohigh, args->olow, args->whence); 36414331Speter#endif 36514331Speter off = (args->olow) | (((off_t) args->ohigh) << 32); 36614331Speter 36714331Speter bsd_args.fd = args->fd; 36814331Speter bsd_args.offset = off; 36914331Speter bsd_args.whence = args->whence; 37014331Speter 37130994Sphk if ((error = lseek(p, &bsd_args))) 37214331Speter return error; 37314331Speter 37430994Sphk if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t)))) 37514331Speter return error; 37614331Speter 37730994Sphk p->p_retval[0] = 0; 37814331Speter return 0; 37914331Speter} 38014331Speter 38114331Speter 3829313Ssosstruct linux_dirent { 3839313Ssos long dino; 3849313Ssos linux_off_t doff; 3859313Ssos unsigned short dreclen; 3869313Ssos char dname[LINUX_NAME_MAX + 1]; 3879313Ssos}; 3889313Ssos 3899313Ssos#define LINUX_RECLEN(de,namlen) \ 3909313Ssos ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1)) 3919313Ssos 3929313Ssosint 39330994Sphklinux_readdir(struct proc *p, struct linux_readdir_args *args) 3949313Ssos{ 39514331Speter struct linux_getdents_args lda; 39614331Speter 39714331Speter lda.fd = args->fd; 39814331Speter lda.dent = args->dent; 39914331Speter lda.count = 1; 40030994Sphk return linux_getdents(p, &lda); 40114331Speter} 40214331Speter 40314331Speterint 40430994Sphklinux_getdents(struct proc *p, struct linux_getdents_args *args) 40514331Speter{ 4069313Ssos register struct dirent *bdp; 4079313Ssos struct vnode *vp; 4089313Ssos caddr_t inp, buf; /* BSD-format */ 4099313Ssos int len, reclen; /* BSD-format */ 4109313Ssos caddr_t outp; /* Linux-format */ 4119313Ssos int resid, linuxreclen=0; /* Linux-format */ 4129313Ssos struct file *fp; 4139313Ssos struct uio auio; 4149313Ssos struct iovec aiov; 4159313Ssos struct vattr va; 4169313Ssos off_t off; 4179313Ssos struct linux_dirent linux_dirent; 41824654Sdfr int buflen, error, eofflag, nbytes, justone; 41924654Sdfr u_long *cookies = NULL, *cookiep; 42024654Sdfr int ncookies; 4219313Ssos 4229313Ssos#ifdef DEBUG 42314331Speter printf("Linux-emul(%d): getdents(%d, *, %d)\n", 4249313Ssos p->p_pid, args->fd, args->count); 4259313Ssos#endif 42610355Sswallace if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) { 4279313Ssos return (error); 42814331Speter } 4299313Ssos 4309313Ssos if ((fp->f_flag & FREAD) == 0) 4319313Ssos return (EBADF); 4329313Ssos 4339313Ssos vp = (struct vnode *) fp->f_data; 4349313Ssos 4359313Ssos if (vp->v_type != VDIR) 4369313Ssos return (EINVAL); 4379313Ssos 43810355Sswallace if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) { 4399313Ssos return error; 44011418Sswallace } 4419313Ssos 4429313Ssos nbytes = args->count; 4439313Ssos if (nbytes == 1) { 4449313Ssos nbytes = sizeof (struct linux_dirent); 4459313Ssos justone = 1; 4469313Ssos } 4479313Ssos else 4489313Ssos justone = 0; 4499313Ssos 45010355Sswallace off = fp->f_offset; 45124672Sdfr#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */ 45224654Sdfr buflen = max(DIRBLKSIZ, nbytes); 45311418Sswallace buflen = min(buflen, MAXBSIZE); 4549313Ssos buf = malloc(buflen, M_TEMP, M_WAITOK); 45522521Sdyson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); 4569313Ssosagain: 4579313Ssos aiov.iov_base = buf; 4589313Ssos aiov.iov_len = buflen; 4599313Ssos auio.uio_iov = &aiov; 4609313Ssos auio.uio_iovcnt = 1; 4619313Ssos auio.uio_rw = UIO_READ; 4629313Ssos auio.uio_segflg = UIO_SYSSPACE; 4639313Ssos auio.uio_procp = p; 4649313Ssos auio.uio_resid = buflen; 46524654Sdfr auio.uio_offset = off; 4669313Ssos 46724654Sdfr if (cookies) { 46824654Sdfr free(cookies, M_TEMP); 46924654Sdfr cookies = NULL; 47024654Sdfr } 47124654Sdfr 47224654Sdfr error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies); 47310355Sswallace if (error) { 4749313Ssos goto out; 47514331Speter } 4769313Ssos 4779313Ssos inp = buf; 4789313Ssos outp = (caddr_t) args->dent; 4799313Ssos resid = nbytes; 48024654Sdfr if ((len = buflen - auio.uio_resid) <= 0) { 4819313Ssos goto eof; 48214331Speter } 4839313Ssos 48424654Sdfr cookiep = cookies; 48524654Sdfr 48624654Sdfr if (cookies) { 48724654Sdfr /* 48824654Sdfr * When using cookies, the vfs has the option of reading from 48924654Sdfr * a different offset than that supplied (UFS truncates the 49024654Sdfr * offset to a block boundary to make sure that it never reads 49124654Sdfr * partway through a directory entry, even if the directory 49224654Sdfr * has been compacted). 49324654Sdfr */ 49424654Sdfr while (len > 0 && ncookies > 0 && *cookiep <= off) { 49524654Sdfr bdp = (struct dirent *) inp; 49624654Sdfr len -= bdp->d_reclen; 49724654Sdfr inp += bdp->d_reclen; 49824654Sdfr cookiep++; 49924654Sdfr ncookies--; 50024654Sdfr } 50124654Sdfr } 50224654Sdfr 5039313Ssos while (len > 0) { 50424654Sdfr if (cookiep && ncookies == 0) 50524654Sdfr break; 50610355Sswallace bdp = (struct dirent *) inp; 50710355Sswallace reclen = bdp->d_reclen; 50810355Sswallace if (reclen & 3) { 50910355Sswallace printf("linux_readdir: reclen=%d\n", reclen); 51010355Sswallace error = EFAULT; 51110355Sswallace goto out; 51210355Sswallace } 51310355Sswallace 5149313Ssos if (bdp->d_fileno == 0) { 5159313Ssos inp += reclen; 51624654Sdfr if (cookiep) { 51724654Sdfr off = *cookiep++; 51824654Sdfr ncookies--; 51924654Sdfr } else 52024654Sdfr off += reclen; 52110355Sswallace len -= reclen; 5229313Ssos continue; 5239313Ssos } 5249313Ssos linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 5259313Ssos if (reclen > len || resid < linuxreclen) { 5269313Ssos outp++; 5279313Ssos break; 5289313Ssos } 5299313Ssos linux_dirent.dino = (long) bdp->d_fileno; 53014465Speter if (justone) { 53114465Speter /* 53214465Speter * old linux-style readdir usage. 53314465Speter */ 53414465Speter linux_dirent.doff = (linux_off_t) linuxreclen; 53514465Speter linux_dirent.dreclen = (u_short) bdp->d_namlen; 53614465Speter } else { 53714465Speter linux_dirent.doff = (linux_off_t) off; 53814465Speter linux_dirent.dreclen = (u_short) linuxreclen; 53914465Speter } 5409313Ssos strcpy(linux_dirent.dname, bdp->d_name); 54110355Sswallace if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) { 5429313Ssos goto out; 54314331Speter } 5449313Ssos inp += reclen; 54524654Sdfr if (cookiep) { 54624654Sdfr off = *cookiep++; 54724654Sdfr ncookies--; 54824654Sdfr } else 54924654Sdfr off += reclen; 5509313Ssos outp += linuxreclen; 5519313Ssos resid -= linuxreclen; 5529313Ssos len -= reclen; 5539313Ssos if (justone) 5549313Ssos break; 5559313Ssos } 5569313Ssos 5579313Ssos if (outp == (caddr_t) args->dent) 5589313Ssos goto again; 5599313Ssos fp->f_offset = off; 5609313Ssos 5619313Ssos if (justone) 5629313Ssos nbytes = resid + linuxreclen; 56310355Sswallace 5649313Ssoseof: 56530994Sphk p->p_retval[0] = nbytes - resid; 5669313Ssosout: 56724654Sdfr if (cookies) 56824654Sdfr free(cookies, M_TEMP); 56922543Smpp VOP_UNLOCK(vp, 0, p); 5709313Ssos free(buf, M_TEMP); 5719313Ssos return error; 5729313Ssos} 57314331Speter 57414331Speter/* 57514331Speter * These exist mainly for hooks for doing /compat/linux translation. 57614331Speter */ 57714331Speter 57814331Speterint 57930994Sphklinux_access(struct proc *p, struct linux_access_args *args) 58014331Speter{ 58114331Speter struct access_args bsd; 58214331Speter caddr_t sg; 58314331Speter 58414331Speter sg = stackgap_init(); 58514331Speter CHECKALTEXIST(p, &sg, args->path); 58614331Speter 58714331Speter#ifdef DEBUG 58814331Speter printf("Linux-emul(%d): access(%s, %d)\n", 58914331Speter p->p_pid, args->path, args->flags); 59014331Speter#endif 59114331Speter bsd.path = args->path; 59214331Speter bsd.flags = args->flags; 59314331Speter 59430994Sphk return access(p, &bsd); 59514331Speter} 59614331Speter 59714331Speterint 59830994Sphklinux_unlink(struct proc *p, struct linux_unlink_args *args) 59914331Speter{ 60014331Speter struct unlink_args bsd; 60114331Speter caddr_t sg; 60214331Speter 60314331Speter sg = stackgap_init(); 60414331Speter CHECKALTEXIST(p, &sg, args->path); 60514331Speter 60614331Speter#ifdef DEBUG 60714331Speter printf("Linux-emul(%d): unlink(%s)\n", 60814331Speter p->p_pid, args->path); 60914331Speter#endif 61014331Speter bsd.path = args->path; 61114331Speter 61230994Sphk return unlink(p, &bsd); 61314331Speter} 61414331Speter 61514331Speterint 61630994Sphklinux_chdir(struct proc *p, struct linux_chdir_args *args) 61714331Speter{ 61814331Speter struct chdir_args bsd; 61914331Speter caddr_t sg; 62014331Speter 62114331Speter sg = stackgap_init(); 62214331Speter CHECKALTEXIST(p, &sg, args->path); 62314331Speter 62414331Speter#ifdef DEBUG 62514331Speter printf("Linux-emul(%d): chdir(%s)\n", 62614331Speter p->p_pid, args->path); 62714331Speter#endif 62814331Speter bsd.path = args->path; 62914331Speter 63030994Sphk return chdir(p, &bsd); 63114331Speter} 63214331Speter 63314331Speterint 63430994Sphklinux_chmod(struct proc *p, struct linux_chmod_args *args) 63514331Speter{ 63614331Speter struct chmod_args bsd; 63714331Speter caddr_t sg; 63814331Speter 63914331Speter sg = stackgap_init(); 64014331Speter CHECKALTEXIST(p, &sg, args->path); 64114331Speter 64214331Speter#ifdef DEBUG 64314331Speter printf("Linux-emul(%d): chmod(%s, %d)\n", 64414331Speter p->p_pid, args->path, args->mode); 64514331Speter#endif 64614331Speter bsd.path = args->path; 64714331Speter bsd.mode = args->mode; 64814331Speter 64930994Sphk return chmod(p, &bsd); 65014331Speter} 65114331Speter 65214331Speterint 65330994Sphklinux_chown(struct proc *p, struct linux_chown_args *args) 65414331Speter{ 65514331Speter struct chown_args bsd; 65614331Speter caddr_t sg; 65714331Speter 65814331Speter sg = stackgap_init(); 65914331Speter CHECKALTEXIST(p, &sg, args->path); 66014331Speter 66114331Speter#ifdef DEBUG 66214331Speter printf("Linux-emul(%d): chown(%s, %d, %d)\n", 66314331Speter p->p_pid, args->path, args->uid, args->gid); 66414331Speter#endif 66514331Speter bsd.path = args->path; 66614331Speter /* XXX size casts here */ 66714331Speter bsd.uid = args->uid; 66814331Speter bsd.gid = args->gid; 66914331Speter 67030994Sphk return chown(p, &bsd); 67114331Speter} 67214331Speter 67314331Speterint 67434941Speterlinux_lchown(struct proc *p, struct linux_lchown_args *args) 67534941Speter{ 67634941Speter struct lchown_args bsd; 67734941Speter caddr_t sg; 67834941Speter 67934941Speter sg = stackgap_init(); 68034941Speter CHECKALTEXIST(p, &sg, args->path); 68134941Speter 68234941Speter#ifdef DEBUG 68334941Speter printf("Linux-emul(%d): lchown(%s, %d, %d)\n", 68434941Speter p->p_pid, 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 70414331Speter printf("Linux-emul(%d): mkdir(%s, %d)\n", 70514331Speter p->p_pid, 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 72314331Speter printf("Linux-emul(%d): rmdir(%s)\n", 72414331Speter p->p_pid, 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 74214331Speter printf("Linux-emul(%d): rename(%s, %s)\n", 74314331Speter p->p_pid, 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 76214331Speter printf("Linux-emul(%d): symlink(%s, %s)\n", 76314331Speter p->p_pid, 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_execve(struct proc *p, struct linux_execve_args *args) 77314331Speter{ 77414331Speter struct execve_args bsd; 77514331Speter caddr_t sg; 77614331Speter 77714331Speter sg = stackgap_init(); 77814331Speter CHECKALTEXIST(p, &sg, args->path); 77914331Speter 78014331Speter#ifdef DEBUG 78114331Speter printf("Linux-emul(%d): execve(%s)\n", 78214331Speter p->p_pid, args->path); 78314331Speter#endif 78414331Speter bsd.fname = args->path; 78514331Speter bsd.argv = args->argp; 78614331Speter bsd.envv = args->envp; 78714331Speter 78830994Sphk return execve(p, &bsd); 78914331Speter} 79014331Speter 79114331Speterint 79230994Sphklinux_readlink(struct proc *p, struct linux_readlink_args *args) 79314331Speter{ 79414331Speter struct readlink_args bsd; 79514331Speter caddr_t sg; 79614331Speter 79714331Speter sg = stackgap_init(); 79814331Speter CHECKALTEXIST(p, &sg, args->name); 79914331Speter 80014331Speter#ifdef DEBUG 80137950Sbde printf("Linux-emul(%ld): readlink(%s, %p, %d)\n", 80237950Sbde (long)p->p_pid, args->name, (void *)args->buf, args->count); 80314331Speter#endif 80414331Speter bsd.path = args->name; 80514331Speter bsd.buf = args->buf; 80614331Speter bsd.count = args->count; 80714331Speter 80830994Sphk return readlink(p, &bsd); 80914331Speter} 81014331Speter 81114331Speterint 81230994Sphklinux_truncate(struct proc *p, struct linux_truncate_args *args) 81314331Speter{ 81442499Seivind struct truncate_args bsd; 81514331Speter caddr_t sg; 81614331Speter 81714331Speter sg = stackgap_init(); 81814331Speter CHECKALTEXIST(p, &sg, args->path); 81914331Speter 82014331Speter#ifdef DEBUG 82132266Sjmb printf("Linux-emul(%d): truncate(%s, %ld)\n", 82232266Sjmb p->p_pid, args->path, args->length); 82314331Speter#endif 82414331Speter bsd.path = args->path; 82532265Sjmb bsd.length = args->length; 82614331Speter 82742499Seivind return truncate(p, &bsd); 82814331Speter} 82914331Speter 83049662Smarcelint 83149662Smarcellinux_link(struct proc *p, struct linux_link_args *args) 83249662Smarcel{ 83349662Smarcel struct link_args bsd; 83449662Smarcel caddr_t sg; 83549662Smarcel 83649662Smarcel sg = stackgap_init(); 83749662Smarcel CHECKALTEXIST(p, &sg, args->path); 83849662Smarcel CHECKALTCREAT(p, &sg, args->to); 83949662Smarcel 84049662Smarcel#ifdef DEBUG 84149662Smarcel printf("Linux-emul(%d): link(%s, %s)\n", p->p_pid, args->path, args->to); 84249662Smarcel#endif 84349662Smarcel 84449662Smarcel bsd.path = args->path; 84549662Smarcel bsd.link = args->to; 84649662Smarcel 84749662Smarcel return link(p, &bsd); 84849662Smarcel} 849