The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux_file.c

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    1 /*-
    2  * Copyright (c) 1994-1995 Søren Schmidt
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer 
   10  *    in this position and unchanged.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software withough specific prior written permission
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD: src/sys/i386/linux/linux_file.c,v 1.7.4.4 1999/09/05 08:14:13 peter Exp $
   29  */
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/sysproto.h>
   34 #include <sys/fcntl.h>
   35 #include <sys/file.h>
   36 #include <sys/filedesc.h>
   37 #include <sys/proc.h>
   38 #include <sys/ioctl.h>
   39 #include <sys/vnode.h>
   40 #include <sys/malloc.h>
   41 #include <sys/dirent.h>
   42 #include <sys/conf.h>
   43 #include <sys/tty.h>
   44 
   45 #include <i386/linux/linux.h>
   46 #include <i386/linux/linux_proto.h>
   47 #include <i386/linux/linux_util.h>
   48 
   49 int
   50 linux_creat(struct proc *p, struct linux_creat_args *args, int *retval)
   51 {
   52     struct open_args /* {
   53         char *path;
   54         int flags;
   55         int mode;
   56     } */ bsd_open_args;
   57     caddr_t sg;
   58 
   59     sg = stackgap_init();
   60     CHECKALTCREAT(p, &sg, args->path);
   61 
   62 #ifdef DEBUG
   63     printf("Linux-emul(%d): creat(%s, %d)\n", 
   64            p->p_pid, args->path, args->mode);
   65 #endif
   66     bsd_open_args.path = args->path;
   67     bsd_open_args.mode = args->mode;
   68     bsd_open_args.flags = O_WRONLY | O_CREAT | O_TRUNC;
   69     return open(p, &bsd_open_args, retval);
   70 }
   71 
   72 int
   73 linux_open(struct proc *p, struct linux_open_args *args, int *retval)
   74 {
   75     struct open_args /* {
   76         char *path;
   77         int flags;
   78         int mode;
   79     } */ bsd_open_args;
   80     int error;
   81     caddr_t sg;
   82 
   83     sg = stackgap_init();
   84     
   85     if (args->flags & LINUX_O_CREAT)
   86         CHECKALTCREAT(p, &sg, args->path);
   87     else
   88         CHECKALTEXIST(p, &sg, args->path);
   89 
   90 #ifdef DEBUG
   91     printf("Linux-emul(%d): open(%s, 0x%x, 0x%x)\n", 
   92            p->p_pid, args->path, args->flags, args->mode);
   93 #endif
   94     bsd_open_args.flags = 0;
   95     if (args->flags & LINUX_O_RDONLY)
   96         bsd_open_args.flags |= O_RDONLY;
   97     if (args->flags & LINUX_O_WRONLY) 
   98         bsd_open_args.flags |= O_WRONLY;
   99     if (args->flags & LINUX_O_RDWR)
  100         bsd_open_args.flags |= O_RDWR;
  101     if (args->flags & LINUX_O_NDELAY)
  102         bsd_open_args.flags |= O_NONBLOCK;
  103     if (args->flags & LINUX_O_APPEND)
  104         bsd_open_args.flags |= O_APPEND;
  105     if (args->flags & LINUX_O_SYNC)
  106         bsd_open_args.flags |= O_FSYNC;
  107     if (args->flags & LINUX_O_NONBLOCK)
  108         bsd_open_args.flags |= O_NONBLOCK;
  109     if (args->flags & LINUX_FASYNC)
  110         bsd_open_args.flags |= O_ASYNC;
  111     if (args->flags & LINUX_O_CREAT)
  112         bsd_open_args.flags |= O_CREAT;
  113     if (args->flags & LINUX_O_TRUNC)
  114         bsd_open_args.flags |= O_TRUNC;
  115     if (args->flags & LINUX_O_EXCL)
  116         bsd_open_args.flags |= O_EXCL;
  117     if (args->flags & LINUX_O_NOCTTY)
  118         bsd_open_args.flags |= O_NOCTTY;
  119     bsd_open_args.path = args->path;
  120     bsd_open_args.mode = args->mode;
  121 
  122     error = open(p, &bsd_open_args, retval);
  123     if (!error && !(bsd_open_args.flags & O_NOCTTY) && 
  124         SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
  125         struct filedesc *fdp = p->p_fd;
  126         struct file *fp = fdp->fd_ofiles[*retval];
  127 
  128         if (fp->f_type == DTYPE_VNODE)
  129             (fp->f_ops->fo_ioctl)(fp, TIOCSCTTY, (caddr_t) 0, p);
  130     }
  131 #ifdef DEBUG
  132     printf("Linux-emul(%d): open returns error %d\n", 
  133            p->p_pid, error);
  134 #endif
  135     return error;
  136 }
  137 
  138 struct linux_flock {
  139     short l_type;
  140     short l_whence;
  141     linux_off_t l_start;
  142     linux_off_t l_len;
  143     linux_pid_t l_pid;
  144 };
  145 
  146 static void
  147 linux_to_bsd_flock(struct linux_flock *linux_flock, struct flock *bsd_flock)
  148 {
  149     switch (linux_flock->l_type) {
  150     case LINUX_F_RDLCK:
  151         bsd_flock->l_type = F_RDLCK;
  152         break;
  153     case LINUX_F_WRLCK:
  154         bsd_flock->l_type = F_WRLCK;
  155         break;
  156     case LINUX_F_UNLCK:
  157         bsd_flock->l_type = F_UNLCK;
  158         break;
  159     }
  160     bsd_flock->l_whence = linux_flock->l_whence;
  161     bsd_flock->l_start = (off_t)linux_flock->l_start;
  162     bsd_flock->l_len = (off_t)linux_flock->l_len;
  163     bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
  164 }
  165 
  166 static void
  167 bsd_to_linux_flock(struct flock *bsd_flock, struct linux_flock *linux_flock)
  168 {
  169     switch (bsd_flock->l_type) {
  170     case F_RDLCK:
  171         linux_flock->l_type = LINUX_F_RDLCK;
  172         break;
  173     case F_WRLCK:
  174         linux_flock->l_type = LINUX_F_WRLCK;
  175         break;
  176     case F_UNLCK:
  177         linux_flock->l_type = LINUX_F_UNLCK;
  178         break;
  179     }
  180     linux_flock->l_whence = bsd_flock->l_whence;
  181     linux_flock->l_start = (linux_off_t)bsd_flock->l_start;
  182     linux_flock->l_len = (linux_off_t)bsd_flock->l_len;
  183     linux_flock->l_pid = (linux_pid_t)bsd_flock->l_pid;
  184 }
  185 
  186 int
  187 linux_fcntl(struct proc *p, struct linux_fcntl_args *args, int *retval)
  188 {
  189     int error, result;
  190     struct fcntl_args /* {
  191         int fd;
  192         int cmd;
  193         int arg;
  194     } */ fcntl_args; 
  195     struct linux_flock linux_flock;
  196     struct flock *bsd_flock;
  197     struct filedesc *fdp;
  198     struct file *fp;
  199     struct vnode *vp;
  200     struct vattr va;
  201     long pgid;
  202     struct pgrp *pgrp;
  203     struct tty *tp, *(*d_tty) __P((dev_t));
  204     caddr_t sg;
  205 
  206     sg = stackgap_init();
  207     bsd_flock = (struct flock *)stackgap_alloc(&sg, sizeof(struct flock));
  208     d_tty = NULL;
  209 
  210 #ifdef DEBUG
  211     printf("Linux-emul(%d): fcntl(%d, %08x, *)\n",
  212            p->p_pid, args->fd, args->cmd);
  213 #endif
  214     fcntl_args.fd = args->fd;
  215     fcntl_args.arg = 0;
  216 
  217     switch (args->cmd) {
  218     case LINUX_F_DUPFD:
  219         fcntl_args.cmd = F_DUPFD;
  220         return fcntl(p, &fcntl_args, retval);
  221 
  222     case LINUX_F_GETFD:
  223         fcntl_args.cmd = F_GETFD;
  224         return fcntl(p, &fcntl_args, retval);
  225 
  226     case LINUX_F_SETFD:
  227         fcntl_args.cmd = F_SETFD;
  228         return fcntl(p, &fcntl_args, retval);
  229 
  230     case LINUX_F_GETFL:
  231         fcntl_args.cmd = F_GETFL;
  232         error = fcntl(p, &fcntl_args, &result);
  233         *retval = 0;
  234         if (result & O_RDONLY) *retval |= LINUX_O_RDONLY;
  235         if (result & O_WRONLY) *retval |= LINUX_O_WRONLY;
  236         if (result & O_RDWR) *retval |= LINUX_O_RDWR;
  237         if (result & O_NDELAY) *retval |= LINUX_O_NONBLOCK;
  238         if (result & O_APPEND) *retval |= LINUX_O_APPEND;
  239         if (result & O_FSYNC) *retval |= LINUX_O_SYNC;
  240         return error;
  241 
  242     case LINUX_F_SETFL:
  243         if (args->arg & LINUX_O_NDELAY) fcntl_args.arg |= O_NONBLOCK;
  244         if (args->arg & LINUX_O_APPEND) fcntl_args.arg |= O_APPEND;
  245         if (args->arg & LINUX_O_SYNC) fcntl_args.arg |= O_FSYNC;
  246         fcntl_args.cmd = F_SETFL;
  247         return fcntl(p, &fcntl_args, retval);
  248     
  249     case LINUX_F_GETLK:
  250         if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
  251                             sizeof(struct linux_flock)))) 
  252             return error;
  253         linux_to_bsd_flock(&linux_flock, bsd_flock);
  254         fcntl_args.cmd = F_GETLK;
  255         fcntl_args.arg = (int)bsd_flock;
  256         if (error = fcntl(p, &fcntl_args, retval))
  257             return error;
  258         bsd_to_linux_flock(bsd_flock, &linux_flock);
  259         return copyout((caddr_t)&linux_flock, (caddr_t)args->arg,
  260                        sizeof(struct linux_flock));
  261 
  262     case LINUX_F_SETLK:
  263         if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
  264                             sizeof(struct linux_flock)))) 
  265             return error;
  266         linux_to_bsd_flock(&linux_flock, bsd_flock);
  267         fcntl_args.cmd = F_SETLK;
  268         fcntl_args.arg = (int)bsd_flock;
  269         return fcntl(p, &fcntl_args, retval);
  270 
  271     case LINUX_F_SETLKW:
  272         if ((error = copyin((caddr_t)args->arg, (caddr_t)&linux_flock,
  273                             sizeof(struct linux_flock)))) 
  274             return error;
  275         linux_to_bsd_flock(&linux_flock, bsd_flock);
  276         fcntl_args.cmd = F_SETLKW;
  277         fcntl_args.arg = (int)bsd_flock;
  278         return fcntl(p, &fcntl_args, retval);
  279 
  280     case LINUX_F_SETOWN:
  281     case LINUX_F_GETOWN:
  282         /*
  283          * We need to route around the normal fcntl() for these calls,
  284          * since it uses TIOC{G,S}PGRP, which is too restrictive for
  285          * Linux F_{G,S}ETOWN semantics. For sockets, this problem
  286          * does not exist.
  287          */
  288         fdp = p->p_fd;
  289         if ((u_int)args->fd >= fdp->fd_nfiles ||
  290                 (fp = fdp->fd_ofiles[args->fd]) == NULL)
  291             return EBADF;
  292         if (fp->f_type == DTYPE_SOCKET) {
  293             fcntl_args.cmd = args->cmd == LINUX_F_SETOWN ? F_SETOWN : F_GETOWN;
  294             return fcntl(p, &fcntl_args, retval); 
  295         }
  296         vp = (struct vnode *)fp->f_data;
  297         if (vp->v_type != VCHR)
  298             return EINVAL;
  299         if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)))
  300             return error;
  301 
  302         d_tty = cdevsw[major(va.va_rdev)]->d_devtotty;
  303         if (!d_tty || (!(tp = (*d_tty)(va.va_rdev))))
  304             return EINVAL;
  305         if (args->cmd == LINUX_F_GETOWN) {
  306             retval[0] = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PID;
  307             return 0;
  308         }
  309         if ((long)args->arg <= 0) {
  310             pgid = -(long)args->arg;
  311         } else {
  312             struct proc *p1 = pfind((long)args->arg);
  313             if (p1 == 0)
  314                 return (ESRCH);
  315             pgid = (long)p1->p_pgrp->pg_id;
  316         }
  317         pgrp = pgfind(pgid);
  318         if (pgrp == NULL || pgrp->pg_session != p->p_session)
  319             return EPERM;
  320         tp->t_pgrp = pgrp;
  321         return 0;
  322     }
  323     return EINVAL;
  324 }
  325 
  326 int
  327 linux_lseek(struct proc *p, struct linux_lseek_args *args, int *retval)
  328 {
  329 
  330     struct lseek_args /* {
  331         int fd;
  332         int pad;
  333         off_t offset;
  334         int whence;
  335     } */ tmp_args;
  336     int error;
  337 
  338 #ifdef DEBUG
  339     printf("Linux-emul(%d): lseek(%d, %d, %d)\n",
  340            p->p_pid, args->fdes, args->off, args->whence);
  341 #endif
  342     tmp_args.fd = args->fdes;
  343     tmp_args.offset = (off_t)args->off;
  344     tmp_args.whence = args->whence;
  345     error = lseek(p, &tmp_args, retval);
  346     return error;
  347 }
  348 
  349 int
  350 linux_llseek(struct proc *p, struct linux_llseek_args *args, int *retval)
  351 {
  352         struct lseek_args bsd_args;
  353         int error;
  354         off_t off;
  355 
  356 #ifdef DEBUG
  357         printf("Linux-emul(%d): llseek(%d, %d:%d, %d)\n",
  358            p->p_pid, args->fd, args->ohigh, args->olow, args->whence);
  359 #endif
  360         off = (args->olow) | (((off_t) args->ohigh) << 32);
  361 
  362         bsd_args.fd = args->fd;
  363         bsd_args.offset = off;
  364         bsd_args.whence = args->whence;
  365 
  366         if ((error = lseek(p, &bsd_args, retval)))
  367                 return error;
  368 
  369         if ((error = copyout(retval, (caddr_t)args->res, sizeof (off_t))))
  370                 return error;
  371 
  372         retval[0] = 0;
  373         return 0;
  374 }
  375 
  376 
  377 struct linux_dirent {
  378     long dino;
  379     linux_off_t doff;
  380     unsigned short dreclen;
  381     char dname[LINUX_NAME_MAX + 1];
  382 };
  383 
  384 #define LINUX_RECLEN(de,namlen) \
  385     ALIGN((((char *)&(de)->dname - (char *)de) + (namlen) + 1))
  386 
  387 int
  388 linux_readdir(struct proc *p, struct linux_readdir_args *args, int *retval)
  389 {
  390         struct linux_getdents_args lda;
  391 
  392         lda.fd = args->fd;
  393         lda.dent = args->dent;
  394         lda.count = 1;
  395         return linux_getdents(p, &lda, retval);
  396 }
  397 
  398 int
  399 linux_getdents(struct proc *p, struct linux_getdents_args *args, int *retval)
  400 {
  401     register struct dirent *bdp;
  402     struct vnode *vp;
  403     caddr_t inp, buf;           /* BSD-format */
  404     int len, reclen;            /* BSD-format */
  405     caddr_t outp;               /* Linux-format */
  406     int resid, linuxreclen=0;   /* Linux-format */
  407     struct file *fp;
  408     struct uio auio;
  409     struct iovec aiov;
  410     struct vattr va;
  411     off_t off;
  412     struct linux_dirent linux_dirent;
  413     int buflen, error, eofflag, nbytes, justone;
  414     u_int *cookies = NULL, *cookiep;
  415     int ncookies;
  416 
  417 #ifdef DEBUG
  418     printf("Linux-emul(%d): getdents(%d, *, %d)\n",
  419            p->p_pid, args->fd, args->count);
  420 #endif
  421     if ((error = getvnode(p->p_fd, args->fd, &fp)) != 0) {
  422         return (error);
  423     }
  424 
  425     if ((fp->f_flag & FREAD) == 0)
  426         return (EBADF);
  427 
  428     vp = (struct vnode *) fp->f_data;
  429 
  430     if (vp->v_type != VDIR)
  431         return (EINVAL);
  432 
  433     if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) {
  434         return error;
  435     }
  436 
  437     nbytes = args->count;
  438     if (nbytes == 1) {
  439         nbytes = sizeof (struct linux_dirent);
  440         justone = 1;
  441     }
  442     else
  443         justone = 0;
  444 
  445     off = fp->f_offset;
  446 #define DIRBLKSIZ       512             /* XXX we used to use ufs's DIRBLKSIZ */
  447     buflen = max(DIRBLKSIZ, nbytes);
  448     buflen = min(buflen, MAXBSIZE);
  449     buf = malloc(buflen, M_TEMP, M_WAITOK);
  450     VOP_LOCK(vp);
  451 again:
  452     aiov.iov_base = buf;
  453     aiov.iov_len = buflen;
  454     auio.uio_iov = &aiov;
  455     auio.uio_iovcnt = 1;
  456     auio.uio_rw = UIO_READ;
  457     auio.uio_segflg = UIO_SYSSPACE;
  458     auio.uio_procp = p;
  459     auio.uio_resid = buflen;
  460     auio.uio_offset = off;
  461 
  462     if (cookies) {
  463         free(cookies, M_TEMP);
  464         cookies = NULL;
  465     }
  466 
  467     error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies, &cookies);
  468     if (error) {
  469         goto out;
  470     }
  471 
  472     inp = buf;
  473     outp = (caddr_t) args->dent;
  474     resid = nbytes;
  475     if ((len = buflen - auio.uio_resid) <= 0) {
  476         goto eof;
  477     }
  478 
  479     cookiep = cookies;
  480 
  481     if (cookies) {
  482         /*
  483          * When using cookies, the vfs has the option of reading from
  484          * a different offset than that supplied (UFS truncates the
  485          * offset to a block boundary to make sure that it never reads
  486          * partway through a directory entry, even if the directory
  487          * has been compacted).
  488          */
  489         while (len > 0 && ncookies > 0 && *cookiep <= off) {
  490             bdp = (struct dirent *) inp;
  491             len -= bdp->d_reclen;
  492             inp += bdp->d_reclen;
  493             cookiep++;
  494             ncookies--;
  495         }
  496     }
  497 
  498     while (len > 0) {
  499         if (cookiep && ncookies == 0)
  500             break;
  501         bdp = (struct dirent *) inp;
  502         reclen = bdp->d_reclen;
  503         if (reclen & 3) {
  504             printf("linux_readdir: reclen=%d\n", reclen);
  505             error = EFAULT;
  506             goto out;
  507         }
  508   
  509         if (bdp->d_fileno == 0) {
  510             inp += reclen;
  511             if (cookiep) {
  512                 off = *cookiep++;
  513                 ncookies--;
  514             } else
  515                 off += reclen;
  516             len -= reclen;
  517             continue;
  518         }
  519         linuxreclen = LINUX_RECLEN(&linux_dirent, bdp->d_namlen);
  520         if (reclen > len || resid < linuxreclen) {
  521             outp++;
  522             break;
  523         }
  524         linux_dirent.dino = (long) bdp->d_fileno;
  525         if (justone) {
  526             /*
  527              * old linux-style readdir usage.
  528              */
  529             linux_dirent.doff = (linux_off_t) linuxreclen;
  530             linux_dirent.dreclen = (u_short) bdp->d_namlen;
  531         } else {
  532             linux_dirent.doff = (linux_off_t) off;
  533             linux_dirent.dreclen = (u_short) linuxreclen;
  534         }
  535         strcpy(linux_dirent.dname, bdp->d_name);
  536         if ((error = copyout((caddr_t)&linux_dirent, outp, linuxreclen))) {
  537             goto out;
  538         }
  539         inp += reclen;
  540         if (cookiep) {
  541             off = *cookiep++;
  542             ncookies--;
  543         } else
  544             off += reclen;
  545         outp += linuxreclen;
  546         resid -= linuxreclen;
  547         len -= reclen;
  548         if (justone)
  549             break;
  550     }
  551 
  552     if (outp == (caddr_t) args->dent)
  553         goto again;
  554     fp->f_offset = off;
  555 
  556     if (justone)
  557         nbytes = resid + linuxreclen;
  558 
  559 eof:
  560     *retval = nbytes - resid;
  561     if (cookies)
  562         free(cookies, M_TEMP);
  563 out:
  564     VOP_UNLOCK(vp);
  565     free(buf, M_TEMP);
  566     return error;
  567 }
  568 
  569 /*
  570  * These exist mainly for hooks for doing /compat/linux translation.
  571  */
  572 
  573 int
  574 linux_access(struct proc *p, struct linux_access_args *args, int *retval)
  575 {
  576         struct access_args bsd;
  577         caddr_t sg;
  578 
  579         sg = stackgap_init();
  580         CHECKALTEXIST(p, &sg, args->path);
  581 
  582 #ifdef DEBUG
  583         printf("Linux-emul(%d): access(%s, %d)\n", 
  584             p->p_pid, args->path, args->flags);
  585 #endif
  586         bsd.path = args->path;
  587         bsd.flags = args->flags;
  588 
  589         return access(p, &bsd, retval);
  590 }
  591 
  592 int
  593 linux_unlink(struct proc *p, struct linux_unlink_args *args, int *retval)
  594 {
  595         struct unlink_args bsd;
  596         caddr_t sg;
  597 
  598         sg = stackgap_init();
  599         CHECKALTEXIST(p, &sg, args->path);
  600 
  601 #ifdef DEBUG
  602         printf("Linux-emul(%d): unlink(%s)\n", 
  603            p->p_pid, args->path);
  604 #endif
  605         bsd.path = args->path;
  606 
  607         return unlink(p, &bsd, retval);
  608 }
  609 
  610 int
  611 linux_chdir(struct proc *p, struct linux_chdir_args *args, int *retval)
  612 {
  613         struct chdir_args bsd;
  614         caddr_t sg;
  615 
  616         sg = stackgap_init();
  617         CHECKALTEXIST(p, &sg, args->path);
  618 
  619 #ifdef DEBUG
  620         printf("Linux-emul(%d): chdir(%s)\n", 
  621            p->p_pid, args->path);
  622 #endif
  623         bsd.path = args->path;
  624 
  625         return chdir(p, &bsd, retval);
  626 }
  627 
  628 int
  629 linux_chmod(struct proc *p, struct linux_chmod_args *args, int *retval)
  630 {
  631         struct chmod_args bsd;
  632         caddr_t sg;
  633 
  634         sg = stackgap_init();
  635         CHECKALTEXIST(p, &sg, args->path);
  636 
  637 #ifdef DEBUG
  638         printf("Linux-emul(%d): chmod(%s, %d)\n", 
  639             p->p_pid, args->path, args->mode);
  640 #endif
  641         bsd.path = args->path;
  642         bsd.mode = args->mode;
  643 
  644         return chmod(p, &bsd, retval);
  645 }
  646 
  647 int
  648 linux_chown(struct proc *p, struct linux_chown_args *args, int *retval)
  649 {
  650         struct chown_args bsd;
  651         caddr_t sg;
  652 
  653         sg = stackgap_init();
  654         CHECKALTEXIST(p, &sg, args->path);
  655 
  656 #ifdef DEBUG
  657         printf("Linux-emul(%d): chown(%s, %d, %d)\n", 
  658             p->p_pid, args->path, args->uid, args->gid);
  659 #endif
  660         bsd.path = args->path;
  661         /* XXX size casts here */
  662         bsd.uid = args->uid;
  663         bsd.gid = args->gid;
  664 
  665         return chown(p, &bsd, retval);
  666 }
  667 
  668 int
  669 linux_mkdir(struct proc *p, struct linux_mkdir_args *args, int *retval)
  670 {
  671         struct mkdir_args bsd;
  672         caddr_t sg;
  673 
  674         sg = stackgap_init();
  675         CHECKALTCREAT(p, &sg, args->path);
  676 
  677 #ifdef DEBUG
  678         printf("Linux-emul(%d): mkdir(%s, %d)\n", 
  679             p->p_pid, args->path, args->mode);
  680 #endif
  681         bsd.path = args->path;
  682         bsd.mode = args->mode;
  683 
  684         return mkdir(p, &bsd, retval);
  685 }
  686 
  687 int
  688 linux_rmdir(struct proc *p, struct linux_rmdir_args *args, int *retval)
  689 {
  690         struct rmdir_args bsd;
  691         caddr_t sg;
  692 
  693         sg = stackgap_init();
  694         CHECKALTEXIST(p, &sg, args->path);
  695 
  696 #ifdef DEBUG
  697         printf("Linux-emul(%d): rmdir(%s)\n", 
  698             p->p_pid, args->path);
  699 #endif
  700         bsd.path = args->path;
  701 
  702         return rmdir(p, &bsd, retval);
  703 }
  704 
  705 int
  706 linux_rename(struct proc *p, struct linux_rename_args *args, int *retval)
  707 {
  708         struct rename_args bsd;
  709         caddr_t sg;
  710 
  711         sg = stackgap_init();
  712         CHECKALTEXIST(p, &sg, args->from);
  713         CHECKALTCREAT(p, &sg, args->to);
  714 
  715 #ifdef DEBUG
  716         printf("Linux-emul(%d): rename(%s, %s)\n", 
  717             p->p_pid, args->from, args->to);
  718 #endif
  719         bsd.from = args->from;
  720         bsd.to = args->to;
  721 
  722         return rename(p, &bsd, retval);
  723 }
  724 
  725 int
  726 linux_symlink(struct proc *p, struct linux_symlink_args *args, int *retval)
  727 {
  728         struct symlink_args bsd;
  729         caddr_t sg;
  730 
  731         sg = stackgap_init();
  732         CHECKALTEXIST(p, &sg, args->path);
  733         CHECKALTCREAT(p, &sg, args->to);
  734 
  735 #ifdef DEBUG
  736         printf("Linux-emul(%d): symlink(%s, %s)\n", 
  737             p->p_pid, args->path, args->to);
  738 #endif
  739         bsd.path = args->path;
  740         bsd.link = args->to;
  741 
  742         return symlink(p, &bsd, retval);
  743 }
  744 
  745 int
  746 linux_execve(struct proc *p, struct linux_execve_args *args, int *retval)
  747 {
  748         struct execve_args bsd;
  749         caddr_t sg;
  750 
  751         sg = stackgap_init();
  752         CHECKALTEXIST(p, &sg, args->path);
  753 
  754 #ifdef DEBUG
  755         printf("Linux-emul(%d): execve(%s)\n", 
  756             p->p_pid, args->path);
  757 #endif
  758         bsd.fname = args->path;
  759         bsd.argv = args->argp;
  760         bsd.envv = args->envp;
  761 
  762         return execve(p, &bsd, retval);
  763 }
  764 
  765 int
  766 linux_readlink(struct proc *p, struct linux_readlink_args *args, int *retval)
  767 {
  768         struct readlink_args bsd;
  769         caddr_t sg;
  770 
  771         sg = stackgap_init();
  772         CHECKALTEXIST(p, &sg, args->name);
  773 
  774 #ifdef DEBUG
  775         printf("Linux-emul(%d): readlink(%s, 0x%x, %d)\n", 
  776             p->p_pid, args->name, args->buf, args->count);
  777 #endif
  778         bsd.path = args->name;
  779         bsd.buf = args->buf;
  780         bsd.count = args->count;
  781 
  782         return readlink(p, &bsd, retval);
  783 }
  784 
  785 int
  786 linux_truncate(struct proc *p, struct linux_truncate_args *args, int *retval)
  787 {
  788         struct otruncate_args bsd;
  789         caddr_t sg;
  790 
  791         sg = stackgap_init();
  792         CHECKALTEXIST(p, &sg, args->path);
  793 
  794 #ifdef DEBUG
  795         printf("Linux-emul(%d): truncate(%s, %ld)\n", 
  796             p->p_pid, args->path, args->length);
  797 #endif
  798         bsd.path = args->path;
  799         bsd.length = args->length;
  800 
  801         return otruncate(p, &bsd, retval);
  802 }
  803 
  804 int
  805 linux_lchown(struct proc *p, struct linux_lchown_args *args, int *retval)
  806 {
  807         struct lchown_args bsd;
  808         caddr_t sg;
  809 
  810         sg = stackgap_init();
  811         CHECKALTEXIST(p, &sg, args->path);
  812 
  813 #ifdef DEBUG
  814         printf("Linux-emul(%d): lchown(%s, %d, %d)\n",
  815                 p->p_pid, args->path, args->uid, args->gid);
  816 #endif
  817         bsd.path = args->path;
  818         /* XXX size casts here */
  819         bsd.uid = args->uid;
  820         bsd.gid = args->gid;
  821 
  822         return lchown(p, &bsd, retval);
  823 }

Cache object: 7f5ee5f75b55e3b22f926d7c6061244b


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