linux_file.c revision 42499
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 * 2842499Seivind * $Id: linux_file.c,v 1.22 1998/10/05 16:37:36 jfieber 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 struct vattr va; 20314331Speter long pgid; 20414331Speter struct pgrp *pgrp; 20514331Speter struct tty *tp, *(*d_tty) __P((dev_t)); 20614331Speter caddr_t sg; 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; 26130994Sphk if (error = fcntl(p, &fcntl_args)) 2629313Ssos return error; 2639313Ssos bsd_to_linux_flock(bsd_flock, &linux_flock); 2649313Ssos return copyout((caddr_t)&linux_flock, (caddr_t)args->arg, 2659313Ssos sizeof(struct linux_flock)); 2669313Ssos 2679313Ssos case LINUX_F_SETLK: 2689313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2699313Ssos sizeof(struct linux_flock)))) 2709313Ssos return error; 2719313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2729313Ssos fcntl_args.cmd = F_SETLK; 2739313Ssos fcntl_args.arg = (int)bsd_flock; 27430994Sphk return fcntl(p, &fcntl_args); 2759313Ssos 2769313Ssos case LINUX_F_SETLKW: 2779313Ssos if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock, 2789313Ssos sizeof(struct linux_flock)))) 2799313Ssos return error; 2809313Ssos linux_to_bsd_flock(&linux_flock, bsd_flock); 2819313Ssos fcntl_args.cmd = F_SETLKW; 2829313Ssos fcntl_args.arg = (int)bsd_flock; 28330994Sphk return fcntl(p, &fcntl_args); 2849313Ssos 2859313Ssos case LINUX_F_SETOWN: 28614331Speter case LINUX_F_GETOWN: 28714331Speter /* 28814331Speter * We need to route around the normal fcntl() for these calls, 28914331Speter * since it uses TIOC{G,S}PGRP, which is too restrictive for 29014331Speter * Linux F_{G,S}ETOWN semantics. For sockets, this problem 29114331Speter * does not exist. 29214331Speter */ 29314331Speter fdp = p->p_fd; 29414331Speter if ((u_int)args->fd >= fdp->fd_nfiles || 29514331Speter (fp = fdp->fd_ofiles[args->fd]) == NULL) 29614331Speter return EBADF; 29714331Speter if (fp->f_type == DTYPE_SOCKET) { 29814331Speter fcntl_args.cmd = args->cmd == LINUX_F_SETOWN ? F_SETOWN : F_GETOWN; 29939978Sjfieber fcntl_args.arg = args->arg; 30030994Sphk return fcntl(p, &fcntl_args); 30114331Speter } 30214331Speter vp = (struct vnode *)fp->f_data; 30314331Speter if (vp->v_type != VCHR) 30414331Speter return EINVAL; 30514331Speter if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) 30614331Speter return error; 3079313Ssos 30814331Speter d_tty = cdevsw[major(va.va_rdev)]->d_devtotty; 30914331Speter if (!d_tty || (!(tp = (*d_tty)(va.va_rdev)))) 31014331Speter return EINVAL; 31114331Speter if (args->cmd == LINUX_F_GETOWN) { 31230994Sphk p->p_retval[0] = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID; 31314331Speter return 0; 31414331Speter } 31514331Speter if ((long)args->arg <= 0) { 31614331Speter pgid = -(long)args->arg; 31714331Speter } else { 31814331Speter struct proc *p1 = pfind((long)args->arg); 31914331Speter if (p1 == 0) 32014331Speter return (ESRCH); 32114331Speter pgid = (long)p1->p_pgrp->pg_id; 32214331Speter } 32314331Speter pgrp = pgfind(pgid); 32414331Speter if (pgrp == NULL || pgrp->pg_session != p->p_session) 32514331Speter return EPERM; 32614331Speter tp->t_pgrp = pgrp; 32714331Speter return 0; 3289313Ssos } 3299313Ssos return EINVAL; 3309313Ssos} 3319313Ssos 3329313Ssosint 33330994Sphklinux_lseek(struct proc *p, struct linux_lseek_args *args) 3349313Ssos{ 3359313Ssos 33612858Speter struct lseek_args /* { 33712858Speter int fd; 3389313Ssos int pad; 33912858Speter off_t offset; 3409313Ssos int whence; 34112858Speter } */ tmp_args; 3429313Ssos int error; 3439313Ssos 3449313Ssos#ifdef DEBUG 34537950Sbde printf("Linux-emul(%ld): lseek(%d, %ld, %d)\n", 34637950Sbde (long)p->p_pid, args->fdes, args->off, args->whence); 3479313Ssos#endif 34812858Speter tmp_args.fd = args->fdes; 34912858Speter tmp_args.offset = (off_t)args->off; 3509313Ssos tmp_args.whence = args->whence; 35130994Sphk error = lseek(p, &tmp_args); 3529313Ssos return error; 3539313Ssos} 3549313Ssos 35514331Speterint 35630994Sphklinux_llseek(struct proc *p, struct linux_llseek_args *args) 35714331Speter{ 35814331Speter struct lseek_args bsd_args; 35914331Speter int error; 36014331Speter off_t off; 36114331Speter 36214331Speter#ifdef DEBUG 36314331Speter printf("Linux-emul(%d): llseek(%d, %d:%d, %d)\n", 36414331Speter p->p_pid, args->fd, args->ohigh, args->olow, args->whence); 36514331Speter#endif 36614331Speter off = (args->olow) | (((off_t) args->ohigh) << 32); 36714331Speter 36814331Speter bsd_args.fd = args->fd; 36914331Speter bsd_args.offset = off; 37014331Speter bsd_args.whence = args->whence; 37114331Speter 37230994Sphk if ((error = lseek(p, &bsd_args))) 37314331Speter return error; 37414331Speter 37530994Sphk if ((error = copyout(p->p_retval, (caddr_t)args->res, sizeof (off_t)))) 37614331Speter return error; 37714331Speter 37830994Sphk p->p_retval[0] = 0; 37914331Speter return 0; 38014331Speter} 38114331Speter 38214331Speter 3839313Ssosstruct linux_dirent { 3849313Ssos long dino; 3859313Ssos linux_off_t doff; 3869313Ssos unsigned short dreclen; 3879313Ssos char dname[LINUX_NAME_MAX + 1]; 3889313Ssos}; 3899313Ssos 3909313Ssos#define LINUX_RECLEN(de,namlen) \ 3919313Ssos ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1)) 3929313Ssos 3939313Ssosint 39430994Sphklinux_readdir(struct proc *p, struct linux_readdir_args *args) 3959313Ssos{ 39614331Speter struct linux_getdents_args lda; 39714331Speter 39814331Speter lda.fd = args->fd; 39914331Speter lda.dent = args->dent; 40014331Speter lda.count = 1; 40130994Sphk return linux_getdents(p, &lda); 40214331Speter} 40314331Speter 40414331Speterint 40530994Sphklinux_getdents(struct proc *p, struct linux_getdents_args *args) 40614331Speter{ 4079313Ssos register struct dirent *bdp; 4089313Ssos struct vnode *vp; 4099313Ssos caddr_t inp, buf; /* BSD-format */ 4109313Ssos int len, reclen; /* BSD-format */ 4119313Ssos caddr_t outp; /* Linux-format */ 4129313Ssos int resid, linuxreclen=0; /* Linux-format */ 4139313Ssos struct file *fp; 4149313Ssos struct uio auio; 4159313Ssos struct iovec aiov; 4169313Ssos struct vattr va; 4179313Ssos off_t off; 4189313Ssos struct linux_dirent linux_dirent; 41924654Sdfr int buflen, error, eofflag, nbytes, justone; 42024654Sdfr u_long *cookies = NULL, *cookiep; 42124654Sdfr int ncookies; 4229313Ssos 4239313Ssos#ifdef DEBUG 42414331Speter printf("Linux-emul(%d): getdents(%d, *, %d)\n", 4259313Ssos p->p_pid, args->fd, args->count); 4269313Ssos#endif 42710355Sswallace if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) { 4289313Ssos return (error); 42914331Speter } 4309313Ssos 4319313Ssos if ((fp->f_flag & FREAD) == 0) 4329313Ssos return (EBADF); 4339313Ssos 4349313Ssos vp = (struct vnode *) fp->f_data; 4359313Ssos 4369313Ssos if (vp->v_type != VDIR) 4379313Ssos return (EINVAL); 4389313Ssos 43910355Sswallace if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) { 4409313Ssos return error; 44111418Sswallace } 4429313Ssos 4439313Ssos nbytes = args->count; 4449313Ssos if (nbytes == 1) { 4459313Ssos nbytes = sizeof (struct linux_dirent); 4469313Ssos justone = 1; 4479313Ssos } 4489313Ssos else 4499313Ssos justone = 0; 4509313Ssos 45110355Sswallace off = fp->f_offset; 45224672Sdfr#define DIRBLKSIZ 512 /* XXX we used to use ufs's DIRBLKSIZ */ 45324654Sdfr buflen = max(DIRBLKSIZ, nbytes); 45411418Sswallace buflen = min(buflen, MAXBSIZE); 4559313Ssos buf = malloc(buflen, M_TEMP, M_WAITOK); 45622521Sdyson vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); 4579313Ssosagain: 4589313Ssos aiov.iov_base = buf; 4599313Ssos aiov.iov_len = buflen; 4609313Ssos auio.uio_iov = &aiov; 4619313Ssos auio.uio_iovcnt = 1; 4629313Ssos auio.uio_rw = UIO_READ; 4639313Ssos auio.uio_segflg = UIO_SYSSPACE; 4649313Ssos auio.uio_procp = p; 4659313Ssos auio.uio_resid = buflen; 46624654Sdfr auio.uio_offset = off; 4679313Ssos 46824654Sdfr if (cookies) { 46924654Sdfr free(cookies, M_TEMP); 47024654Sdfr cookies = NULL; 47124654Sdfr } 47224654Sdfr 47324654Sdfr error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies); 47410355Sswallace if (error) { 4759313Ssos goto out; 47614331Speter } 4779313Ssos 4789313Ssos inp = buf; 4799313Ssos outp = (caddr_t) args->dent; 4809313Ssos resid = nbytes; 48124654Sdfr if ((len = buflen - auio.uio_resid) <= 0) { 4829313Ssos goto eof; 48314331Speter } 4849313Ssos 48524654Sdfr cookiep = cookies; 48624654Sdfr 48724654Sdfr if (cookies) { 48824654Sdfr /* 48924654Sdfr * When using cookies, the vfs has the option of reading from 49024654Sdfr * a different offset than that supplied (UFS truncates the 49124654Sdfr * offset to a block boundary to make sure that it never reads 49224654Sdfr * partway through a directory entry, even if the directory 49324654Sdfr * has been compacted). 49424654Sdfr */ 49524654Sdfr while (len > 0 && ncookies > 0 && *cookiep <= off) { 49624654Sdfr bdp = (struct dirent *) inp; 49724654Sdfr len -= bdp->d_reclen; 49824654Sdfr inp += bdp->d_reclen; 49924654Sdfr cookiep++; 50024654Sdfr ncookies--; 50124654Sdfr } 50224654Sdfr } 50324654Sdfr 5049313Ssos while (len > 0) { 50524654Sdfr if (cookiep && ncookies == 0) 50624654Sdfr break; 50710355Sswallace bdp = (struct dirent *) inp; 50810355Sswallace reclen = bdp->d_reclen; 50910355Sswallace if (reclen & 3) { 51010355Sswallace printf("linux_readdir: reclen=%d\n", reclen); 51110355Sswallace error = EFAULT; 51210355Sswallace goto out; 51310355Sswallace } 51410355Sswallace 5159313Ssos if (bdp->d_fileno == 0) { 5169313Ssos inp += reclen; 51724654Sdfr if (cookiep) { 51824654Sdfr off = *cookiep++; 51924654Sdfr ncookies--; 52024654Sdfr } else 52124654Sdfr off += reclen; 52210355Sswallace len -= reclen; 5239313Ssos continue; 5249313Ssos } 5259313Ssos linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen); 5269313Ssos if (reclen > len || resid < linuxreclen) { 5279313Ssos outp++; 5289313Ssos break; 5299313Ssos } 5309313Ssos linux_dirent.dino = (long) bdp->d_fileno; 53114465Speter if (justone) { 53214465Speter /* 53314465Speter * old linux-style readdir usage. 53414465Speter */ 53514465Speter linux_dirent.doff = (linux_off_t) linuxreclen; 53614465Speter linux_dirent.dreclen = (u_short) bdp->d_namlen; 53714465Speter } else { 53814465Speter linux_dirent.doff = (linux_off_t) off; 53914465Speter linux_dirent.dreclen = (u_short) linuxreclen; 54014465Speter } 5419313Ssos strcpy(linux_dirent.dname, bdp->d_name); 54210355Sswallace if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) { 5439313Ssos goto out; 54414331Speter } 5459313Ssos inp += reclen; 54624654Sdfr if (cookiep) { 54724654Sdfr off = *cookiep++; 54824654Sdfr ncookies--; 54924654Sdfr } else 55024654Sdfr off += reclen; 5519313Ssos outp += linuxreclen; 5529313Ssos resid -= linuxreclen; 5539313Ssos len -= reclen; 5549313Ssos if (justone) 5559313Ssos break; 5569313Ssos } 5579313Ssos 5589313Ssos if (outp == (caddr_t) args->dent) 5599313Ssos goto again; 5609313Ssos fp->f_offset = off; 5619313Ssos 5629313Ssos if (justone) 5639313Ssos nbytes = resid + linuxreclen; 56410355Sswallace 5659313Ssoseof: 56630994Sphk p->p_retval[0] = nbytes - resid; 5679313Ssosout: 56824654Sdfr if (cookies) 56924654Sdfr free(cookies, M_TEMP); 57022543Smpp VOP_UNLOCK(vp, 0, p); 5719313Ssos free(buf, M_TEMP); 5729313Ssos return error; 5739313Ssos} 57414331Speter 57514331Speter/* 57614331Speter * These exist mainly for hooks for doing /compat/linux translation. 57714331Speter */ 57814331Speter 57914331Speterint 58030994Sphklinux_access(struct proc *p, struct linux_access_args *args) 58114331Speter{ 58214331Speter struct access_args bsd; 58314331Speter caddr_t sg; 58414331Speter 58514331Speter sg = stackgap_init(); 58614331Speter CHECKALTEXIST(p, &sg, args->path); 58714331Speter 58814331Speter#ifdef DEBUG 58914331Speter printf("Linux-emul(%d): access(%s, %d)\n", 59014331Speter p->p_pid, args->path, args->flags); 59114331Speter#endif 59214331Speter bsd.path = args->path; 59314331Speter bsd.flags = args->flags; 59414331Speter 59530994Sphk return access(p, &bsd); 59614331Speter} 59714331Speter 59814331Speterint 59930994Sphklinux_unlink(struct proc *p, struct linux_unlink_args *args) 60014331Speter{ 60114331Speter struct unlink_args bsd; 60214331Speter caddr_t sg; 60314331Speter 60414331Speter sg = stackgap_init(); 60514331Speter CHECKALTEXIST(p, &sg, args->path); 60614331Speter 60714331Speter#ifdef DEBUG 60814331Speter printf("Linux-emul(%d): unlink(%s)\n", 60914331Speter p->p_pid, args->path); 61014331Speter#endif 61114331Speter bsd.path = args->path; 61214331Speter 61330994Sphk return unlink(p, &bsd); 61414331Speter} 61514331Speter 61614331Speterint 61730994Sphklinux_chdir(struct proc *p, struct linux_chdir_args *args) 61814331Speter{ 61914331Speter struct chdir_args bsd; 62014331Speter caddr_t sg; 62114331Speter 62214331Speter sg = stackgap_init(); 62314331Speter CHECKALTEXIST(p, &sg, args->path); 62414331Speter 62514331Speter#ifdef DEBUG 62614331Speter printf("Linux-emul(%d): chdir(%s)\n", 62714331Speter p->p_pid, args->path); 62814331Speter#endif 62914331Speter bsd.path = args->path; 63014331Speter 63130994Sphk return chdir(p, &bsd); 63214331Speter} 63314331Speter 63414331Speterint 63530994Sphklinux_chmod(struct proc *p, struct linux_chmod_args *args) 63614331Speter{ 63714331Speter struct chmod_args bsd; 63814331Speter caddr_t sg; 63914331Speter 64014331Speter sg = stackgap_init(); 64114331Speter CHECKALTEXIST(p, &sg, args->path); 64214331Speter 64314331Speter#ifdef DEBUG 64414331Speter printf("Linux-emul(%d): chmod(%s, %d)\n", 64514331Speter p->p_pid, args->path, args->mode); 64614331Speter#endif 64714331Speter bsd.path = args->path; 64814331Speter bsd.mode = args->mode; 64914331Speter 65030994Sphk return chmod(p, &bsd); 65114331Speter} 65214331Speter 65314331Speterint 65430994Sphklinux_chown(struct proc *p, struct linux_chown_args *args) 65514331Speter{ 65614331Speter struct chown_args bsd; 65714331Speter caddr_t sg; 65814331Speter 65914331Speter sg = stackgap_init(); 66014331Speter CHECKALTEXIST(p, &sg, args->path); 66114331Speter 66214331Speter#ifdef DEBUG 66314331Speter printf("Linux-emul(%d): chown(%s, %d, %d)\n", 66414331Speter p->p_pid, args->path, args->uid, args->gid); 66514331Speter#endif 66614331Speter bsd.path = args->path; 66714331Speter /* XXX size casts here */ 66814331Speter bsd.uid = args->uid; 66914331Speter bsd.gid = args->gid; 67014331Speter 67130994Sphk return chown(p, &bsd); 67214331Speter} 67314331Speter 67414331Speterint 67534941Speterlinux_lchown(struct proc *p, struct linux_lchown_args *args) 67634941Speter{ 67734941Speter struct lchown_args bsd; 67834941Speter caddr_t sg; 67934941Speter 68034941Speter sg = stackgap_init(); 68134941Speter CHECKALTEXIST(p, &sg, args->path); 68234941Speter 68334941Speter#ifdef DEBUG 68434941Speter printf("Linux-emul(%d): lchown(%s, %d, %d)\n", 68534941Speter p->p_pid, args->path, args->uid, args->gid); 68634941Speter#endif 68734941Speter bsd.path = args->path; 68834941Speter /* XXX size casts here */ 68934941Speter bsd.uid = args->uid; 69034941Speter bsd.gid = args->gid; 69134941Speter 69234941Speter return lchown(p, &bsd); 69334941Speter} 69434941Speter 69534941Speterint 69630994Sphklinux_mkdir(struct proc *p, struct linux_mkdir_args *args) 69714331Speter{ 69814331Speter struct mkdir_args bsd; 69914331Speter caddr_t sg; 70014331Speter 70114331Speter sg = stackgap_init(); 70214331Speter CHECKALTCREAT(p, &sg, args->path); 70314331Speter 70414331Speter#ifdef DEBUG 70514331Speter printf("Linux-emul(%d): mkdir(%s, %d)\n", 70614331Speter p->p_pid, args->path, args->mode); 70714331Speter#endif 70814331Speter bsd.path = args->path; 70914331Speter bsd.mode = args->mode; 71014331Speter 71130994Sphk return mkdir(p, &bsd); 71214331Speter} 71314331Speter 71414331Speterint 71530994Sphklinux_rmdir(struct proc *p, struct linux_rmdir_args *args) 71614331Speter{ 71714331Speter struct rmdir_args bsd; 71814331Speter caddr_t sg; 71914331Speter 72014331Speter sg = stackgap_init(); 72114331Speter CHECKALTEXIST(p, &sg, args->path); 72214331Speter 72314331Speter#ifdef DEBUG 72414331Speter printf("Linux-emul(%d): rmdir(%s)\n", 72514331Speter p->p_pid, args->path); 72614331Speter#endif 72714331Speter bsd.path = args->path; 72814331Speter 72930994Sphk return rmdir(p, &bsd); 73014331Speter} 73114331Speter 73214331Speterint 73330994Sphklinux_rename(struct proc *p, struct linux_rename_args *args) 73414331Speter{ 73514331Speter struct rename_args bsd; 73614331Speter caddr_t sg; 73714331Speter 73814331Speter sg = stackgap_init(); 73914331Speter CHECKALTEXIST(p, &sg, args->from); 74014331Speter CHECKALTCREAT(p, &sg, args->to); 74114331Speter 74214331Speter#ifdef DEBUG 74314331Speter printf("Linux-emul(%d): rename(%s, %s)\n", 74414331Speter p->p_pid, args->from, args->to); 74514331Speter#endif 74614331Speter bsd.from = args->from; 74714331Speter bsd.to = args->to; 74814331Speter 74930994Sphk return rename(p, &bsd); 75014331Speter} 75114331Speter 75214331Speterint 75330994Sphklinux_symlink(struct proc *p, struct linux_symlink_args *args) 75414331Speter{ 75514331Speter struct symlink_args bsd; 75614331Speter caddr_t sg; 75714331Speter 75814331Speter sg = stackgap_init(); 75914331Speter CHECKALTEXIST(p, &sg, args->path); 76014331Speter CHECKALTCREAT(p, &sg, args->to); 76114331Speter 76214331Speter#ifdef DEBUG 76314331Speter printf("Linux-emul(%d): symlink(%s, %s)\n", 76414331Speter p->p_pid, args->path, args->to); 76514331Speter#endif 76614331Speter bsd.path = args->path; 76714331Speter bsd.link = args->to; 76814331Speter 76930994Sphk return symlink(p, &bsd); 77014331Speter} 77114331Speter 77214331Speterint 77330994Sphklinux_execve(struct proc *p, struct linux_execve_args *args) 77414331Speter{ 77514331Speter struct execve_args bsd; 77614331Speter caddr_t sg; 77714331Speter 77814331Speter sg = stackgap_init(); 77914331Speter CHECKALTEXIST(p, &sg, args->path); 78014331Speter 78114331Speter#ifdef DEBUG 78214331Speter printf("Linux-emul(%d): execve(%s)\n", 78314331Speter p->p_pid, args->path); 78414331Speter#endif 78514331Speter bsd.fname = args->path; 78614331Speter bsd.argv = args->argp; 78714331Speter bsd.envv = args->envp; 78814331Speter 78930994Sphk return execve(p, &bsd); 79014331Speter} 79114331Speter 79214331Speterint 79330994Sphklinux_readlink(struct proc *p, struct linux_readlink_args *args) 79414331Speter{ 79514331Speter struct readlink_args bsd; 79614331Speter caddr_t sg; 79714331Speter 79814331Speter sg = stackgap_init(); 79914331Speter CHECKALTEXIST(p, &sg, args->name); 80014331Speter 80114331Speter#ifdef DEBUG 80237950Sbde printf("Linux-emul(%ld): readlink(%s, %p, %d)\n", 80337950Sbde (long)p->p_pid, args->name, (void *)args->buf, args->count); 80414331Speter#endif 80514331Speter bsd.path = args->name; 80614331Speter bsd.buf = args->buf; 80714331Speter bsd.count = args->count; 80814331Speter 80930994Sphk return readlink(p, &bsd); 81014331Speter} 81114331Speter 81214331Speterint 81330994Sphklinux_truncate(struct proc *p, struct linux_truncate_args *args) 81414331Speter{ 81542499Seivind struct truncate_args bsd; 81614331Speter caddr_t sg; 81714331Speter 81814331Speter sg = stackgap_init(); 81914331Speter CHECKALTEXIST(p, &sg, args->path); 82014331Speter 82114331Speter#ifdef DEBUG 82232266Sjmb printf("Linux-emul(%d): truncate(%s, %ld)\n", 82332266Sjmb p->p_pid, args->path, args->length); 82414331Speter#endif 82514331Speter bsd.path = args->path; 82632265Sjmb bsd.length = args->length; 82714331Speter 82842499Seivind return truncate(p, &bsd); 82914331Speter} 83014331Speter 831