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 without 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 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include "opt_compat.h"
   33 #include "opt_mac.h"
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/conf.h>
   38 #include <sys/dirent.h>
   39 #include <sys/fcntl.h>
   40 #include <sys/file.h>
   41 #include <sys/filedesc.h>
   42 #include <sys/lock.h>
   43 #include <sys/malloc.h>
   44 #include <sys/mount.h>
   45 #include <sys/mutex.h>
   46 #include <sys/namei.h>
   47 #include <sys/proc.h>
   48 #include <sys/stat.h>
   49 #include <sys/sx.h>
   50 #include <sys/syscallsubr.h>
   51 #include <sys/sysproto.h>
   52 #include <sys/tty.h>
   53 #include <sys/unistd.h>
   54 #include <sys/vnode.h>
   55 
   56 #include <security/mac/mac_framework.h>
   57 
   58 #include <ufs/ufs/extattr.h>
   59 #include <ufs/ufs/quota.h>
   60 #include <ufs/ufs/ufsmount.h>
   61 
   62 #ifdef COMPAT_LINUX32
   63 #include <machine/../linux32/linux.h>
   64 #include <machine/../linux32/linux32_proto.h>
   65 #else
   66 #include <machine/../linux/linux.h>
   67 #include <machine/../linux/linux_proto.h>
   68 #endif
   69 #include <compat/linux/linux_util.h>
   70 
   71 int
   72 linux_creat(struct thread *td, struct linux_creat_args *args)
   73 {
   74     char *path;
   75     int error;
   76 
   77     LCONVPATHEXIST(td, args->path, &path);
   78 
   79 #ifdef DEBUG
   80         if (ldebug(creat))
   81                 printf(ARGS(creat, "%s, %d"), path, args->mode);
   82 #endif
   83     error = kern_open(td, path, UIO_SYSSPACE, O_WRONLY | O_CREAT | O_TRUNC,
   84         args->mode);
   85     LFREEPATH(path);
   86     return (error);
   87 }
   88 
   89 
   90 static int
   91 linux_common_open(struct thread *td, char *path, int l_flags, int mode, int openat)
   92 {
   93     struct proc *p = td->td_proc;
   94     struct file *fp;
   95     int fd;
   96     int bsd_flags, error;
   97 
   98     bsd_flags = 0;
   99     switch (l_flags & LINUX_O_ACCMODE) {
  100     case LINUX_O_WRONLY:
  101         bsd_flags |= O_WRONLY;
  102         break;
  103     case LINUX_O_RDWR:
  104         bsd_flags |= O_RDWR;
  105         break;
  106     default:
  107         bsd_flags |= O_RDONLY;
  108     }
  109     if (l_flags & LINUX_O_NDELAY)
  110         bsd_flags |= O_NONBLOCK;
  111     if (l_flags & LINUX_O_APPEND)
  112         bsd_flags |= O_APPEND;
  113     if (l_flags & LINUX_O_SYNC)
  114         bsd_flags |= O_FSYNC;
  115     if (l_flags & LINUX_O_NONBLOCK)
  116         bsd_flags |= O_NONBLOCK;
  117     if (l_flags & LINUX_FASYNC)
  118         bsd_flags |= O_ASYNC;
  119     if (l_flags & LINUX_O_CREAT)
  120         bsd_flags |= O_CREAT;
  121     if (l_flags & LINUX_O_TRUNC)
  122         bsd_flags |= O_TRUNC;
  123     if (l_flags & LINUX_O_EXCL)
  124         bsd_flags |= O_EXCL;
  125     if (l_flags & LINUX_O_NOCTTY)
  126         bsd_flags |= O_NOCTTY;
  127     if (l_flags & LINUX_O_DIRECT)
  128         bsd_flags |= O_DIRECT;
  129     if (l_flags & LINUX_O_NOFOLLOW)
  130         bsd_flags |= O_NOFOLLOW;
  131     /* XXX LINUX_O_NOATIME: unable to be easily implemented. */
  132 
  133     error = kern_open(td, path, UIO_SYSSPACE, bsd_flags, mode);
  134     if (!error) {
  135             fd = td->td_retval[0];
  136             /*
  137              * XXX In between kern_open() and fget(), another process
  138              * having the same filedesc could use that fd without
  139              * checking below.
  140              */
  141             error = fget(td, fd, &fp);
  142             if (!error) {
  143                     sx_slock(&proctree_lock);
  144                     PROC_LOCK(p);
  145                     if (!(bsd_flags & O_NOCTTY) &&
  146                         SESS_LEADER(p) && !(p->p_flag & P_CONTROLT)) {
  147                             PROC_UNLOCK(p);
  148                             sx_unlock(&proctree_lock);
  149                             if (fp->f_type == DTYPE_VNODE)
  150                                     (void) fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0,
  151                                              td->td_ucred, td);
  152                     } else {
  153                             PROC_UNLOCK(p);
  154                             sx_sunlock(&proctree_lock);
  155                     }
  156                     if (l_flags & LINUX_O_DIRECTORY) {
  157                             if (fp->f_type != DTYPE_VNODE ||
  158                                 fp->f_vnode->v_type != VDIR) {
  159                                     error = ENOTDIR;
  160                             }
  161                     }
  162                     fdrop(fp, td);
  163                     /*
  164                      * XXX as above, fdrop()/kern_close() pair is racy.
  165                      */
  166                     if (error)
  167                             kern_close(td, fd);
  168             }
  169     }
  170 
  171 #ifdef DEBUG
  172     if (ldebug(open))
  173             printf(LMSG("open returns error %d"), error);
  174 #endif
  175     if (!openat)
  176         LFREEPATH(path);
  177     return error;
  178 }
  179 
  180 /*
  181  * common code for linux *at set of syscalls
  182  *
  183  * works like this:
  184  * if filename is absolute 
  185  *    ignore dirfd
  186  * else
  187  *    if dirfd == AT_FDCWD 
  188  *       return CWD/filename
  189  *    else
  190  *       return DIRFD/filename
  191  */
  192 static int
  193 linux_at(struct thread *td, int dirfd, char *filename, char **newpath, char **freebuf)
  194 {
  195         struct file *fp;
  196         int error = 0, vfslocked;
  197         struct vnode *dvp;
  198         struct filedesc *fdp = td->td_proc->p_fd;
  199         char *fullpath = "unknown";
  200         char *freepath = NULL;
  201 
  202         /* don't do anything if the pathname is absolute */
  203         if (*filename == '/') {
  204                 *newpath= filename;
  205                 return (0);
  206         }
  207 
  208         /* check for AT_FDWCD */
  209         if (dirfd == LINUX_AT_FDCWD) {
  210                 FILEDESC_SLOCK(fdp);
  211                 dvp = fdp->fd_cdir;
  212                 vref(dvp);
  213                 FILEDESC_SUNLOCK(fdp);
  214         } else {
  215                 error = fget(td, dirfd, &fp);
  216                 if (error)
  217                         return (error);
  218                 dvp = fp->f_vnode;
  219                 /* only a dir can be dfd */
  220                 if (dvp->v_type != VDIR) {
  221                         fdrop(fp, td);
  222                         return (ENOTDIR);
  223                 }
  224                 vref(dvp);
  225                 fdrop(fp, td);
  226         }
  227 
  228         /*
  229          * XXXRW: This is bogus, as vn_fullpath() returns only an advisory
  230          * file path, and may fail in several common situations, including
  231          * for file systmes that don't use the name cache, and if the entry
  232          * for the file falls out of the name cache.  We should implement
  233          * openat() in the FreeBSD native system call layer properly (using a
  234          * requested starting directory), and have Linux and other ABIs wrap
  235          * the native implementation.
  236          */
  237         error = vn_fullpath(td, dvp, &fullpath, &freepath);
  238         if (!error) {
  239                 *newpath = malloc(strlen(fullpath) + strlen(filename) + 2, M_TEMP, M_WAITOK | M_ZERO);
  240                 *freebuf = freepath;
  241                 sprintf(*newpath, "%s/%s", fullpath, filename);
  242         } else {
  243                 *newpath = NULL;
  244         }
  245         vfslocked = VFS_LOCK_GIANT(dvp->v_mount);
  246         vrele(dvp);
  247         VFS_UNLOCK_GIANT(vfslocked);
  248         return (error);
  249 }
  250 
  251 int
  252 linux_openat(struct thread *td, struct linux_openat_args *args)
  253 {
  254         char *newpath, *oldpath, *freebuf, *path;
  255         int error;
  256 
  257         oldpath = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
  258         error = copyinstr(args->filename, oldpath, MAXPATHLEN, NULL);
  259         if (error) {
  260                 free(oldpath, M_TEMP);
  261                 return (error);
  262         }
  263 #ifdef DEBUG
  264         if (ldebug(openat))
  265                 printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
  266                     oldpath, args->flags, args->mode);
  267 #endif
  268         newpath = freebuf = NULL;
  269         error = linux_at(td, args->dfd, oldpath, &newpath, &freebuf);
  270         if (error == 0) {
  271 #ifdef DEBUG
  272                 if (ldebug(openat))
  273                         printf(LMSG("newpath: %s"), newpath);
  274 #endif
  275                 if (args->flags & LINUX_O_CREAT)
  276                         LCONVPATH_SEG(td, newpath, &path, 1, UIO_SYSSPACE);
  277                 else
  278                         LCONVPATH_SEG(td, newpath, &path, 0, UIO_SYSSPACE);
  279         }
  280         if (freebuf)
  281                 free(freebuf, M_TEMP);
  282         if (*oldpath != '/')
  283                 free(newpath, M_TEMP);
  284         if (error == 0) {
  285                 error = linux_common_open(td, path, args->flags,
  286                     args->mode, 1);
  287                 LFREEPATH(path);
  288         }
  289         free(oldpath, M_TEMP);
  290         return (error);
  291 }
  292 
  293 int
  294 linux_open(struct thread *td, struct linux_open_args *args)
  295 {
  296     char *path;
  297 
  298     if (args->flags & LINUX_O_CREAT)
  299         LCONVPATHCREAT(td, args->path, &path);
  300     else
  301         LCONVPATHEXIST(td, args->path, &path);
  302 
  303 #ifdef DEBUG
  304         if (ldebug(open))
  305                 printf(ARGS(open, "%s, 0x%x, 0x%x"),
  306                     path, args->flags, args->mode);
  307 #endif
  308 
  309     return linux_common_open(td, path, args->flags, args->mode, 0);
  310 }
  311 
  312 int
  313 linux_lseek(struct thread *td, struct linux_lseek_args *args)
  314 {
  315 
  316     struct lseek_args /* {
  317         int fd;
  318         int pad;
  319         off_t offset;
  320         int whence;
  321     } */ tmp_args;
  322     int error;
  323 
  324 #ifdef DEBUG
  325         if (ldebug(lseek))
  326                 printf(ARGS(lseek, "%d, %ld, %d"),
  327                     args->fdes, (long)args->off, args->whence);
  328 #endif
  329     tmp_args.fd = args->fdes;
  330     tmp_args.offset = (off_t)args->off;
  331     tmp_args.whence = args->whence;
  332     error = lseek(td, &tmp_args);
  333     return error;
  334 }
  335 
  336 int
  337 linux_llseek(struct thread *td, struct linux_llseek_args *args)
  338 {
  339         struct lseek_args bsd_args;
  340         int error;
  341         off_t off;
  342 
  343 #ifdef DEBUG
  344         if (ldebug(llseek))
  345                 printf(ARGS(llseek, "%d, %d:%d, %d"),
  346                     args->fd, args->ohigh, args->olow, args->whence);
  347 #endif
  348         off = (args->olow) | (((off_t) args->ohigh) << 32);
  349 
  350         bsd_args.fd = args->fd;
  351         bsd_args.offset = off;
  352         bsd_args.whence = args->whence;
  353 
  354         if ((error = lseek(td, &bsd_args)))
  355                 return error;
  356 
  357         if ((error = copyout(td->td_retval, args->res, sizeof (off_t))))
  358                 return error;
  359 
  360         td->td_retval[0] = 0;
  361         return 0;
  362 }
  363 
  364 int
  365 linux_readdir(struct thread *td, struct linux_readdir_args *args)
  366 {
  367         struct linux_getdents_args lda;
  368 
  369         lda.fd = args->fd;
  370         lda.dent = args->dent;
  371         lda.count = 1;
  372         return linux_getdents(td, &lda);
  373 }
  374 
  375 /*
  376  * Note that linux_getdents(2) and linux_getdents64(2) have the same
  377  * arguments. They only differ in the definition of struct dirent they
  378  * operate on. We use this to common the code, with the exception of
  379  * accessing struct dirent. Note that linux_readdir(2) is implemented
  380  * by means of linux_getdents(2). In this case we never operate on
  381  * struct dirent64 and thus don't need to handle it...
  382  */
  383 
  384 struct l_dirent {
  385         l_long          d_ino;
  386         l_off_t         d_off;
  387         l_ushort        d_reclen;
  388         char            d_name[LINUX_NAME_MAX + 1];
  389 };
  390 
  391 struct l_dirent64 {
  392         uint64_t        d_ino;
  393         int64_t         d_off;
  394         l_ushort        d_reclen;
  395         u_char          d_type;
  396         char            d_name[LINUX_NAME_MAX + 1];
  397 };
  398 
  399 #define LINUX_RECLEN(de,namlen) \
  400     ALIGN((((char *)&(de)->d_name - (char *)de) + (namlen) + 1))
  401 
  402 #define LINUX_DIRBLKSIZ         512
  403 
  404 static int
  405 getdents_common(struct thread *td, struct linux_getdents64_args *args,
  406     int is64bit)
  407 {
  408         struct dirent *bdp;
  409         struct vnode *vp;
  410         caddr_t inp, buf;               /* BSD-format */
  411         int len, reclen;                /* BSD-format */
  412         caddr_t outp;                   /* Linux-format */
  413         int resid, linuxreclen=0;       /* Linux-format */
  414         struct file *fp;
  415         struct uio auio;
  416         struct iovec aiov;
  417         off_t off;
  418         struct l_dirent linux_dirent;
  419         struct l_dirent64 linux_dirent64;
  420         int buflen, error, eofflag, nbytes, justone;
  421         u_long *cookies = NULL, *cookiep;
  422         int ncookies, vfslocked;
  423 
  424         nbytes = args->count;
  425         if (nbytes == 1) {
  426                 /* readdir(2) case. Always struct dirent. */
  427                 if (is64bit)
  428                         return (EINVAL);
  429                 nbytes = sizeof(linux_dirent);
  430                 justone = 1;
  431         } else
  432                 justone = 0;
  433 
  434         if ((error = getvnode(td->td_proc->p_fd, args->fd, &fp)) != 0)
  435                 return (error);
  436 
  437         if ((fp->f_flag & FREAD) == 0) {
  438                 fdrop(fp, td);
  439                 return (EBADF);
  440         }
  441 
  442         vp = fp->f_vnode;
  443         vfslocked = VFS_LOCK_GIANT(vp->v_mount);
  444         if (vp->v_type != VDIR) {
  445                 VFS_UNLOCK_GIANT(vfslocked);
  446                 fdrop(fp, td);
  447                 return (EINVAL);
  448         }
  449 
  450         off = fp->f_offset;
  451 
  452         buflen = max(LINUX_DIRBLKSIZ, nbytes);
  453         buflen = min(buflen, MAXBSIZE);
  454         buf = malloc(buflen, M_TEMP, M_WAITOK);
  455         vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
  456 
  457 again:
  458         aiov.iov_base = buf;
  459         aiov.iov_len = buflen;
  460         auio.uio_iov = &aiov;
  461         auio.uio_iovcnt = 1;
  462         auio.uio_rw = UIO_READ;
  463         auio.uio_segflg = UIO_SYSSPACE;
  464         auio.uio_td = td;
  465         auio.uio_resid = buflen;
  466         auio.uio_offset = off;
  467 
  468         if (cookies) {
  469                 free(cookies, M_TEMP);
  470                 cookies = NULL;
  471         }
  472 
  473 #ifdef MAC
  474         /*
  475          * Do directory search MAC check using non-cached credentials.
  476          */
  477         if ((error = mac_check_vnode_readdir(td->td_ucred, vp)))
  478                 goto out;
  479 #endif /* MAC */
  480         if ((error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
  481                  &cookies)))
  482                 goto out;
  483 
  484         inp = buf;
  485         outp = (caddr_t)args->dirent;
  486         resid = nbytes;
  487         if ((len = buflen - auio.uio_resid) <= 0)
  488                 goto eof;
  489 
  490         cookiep = cookies;
  491 
  492         if (cookies) {
  493                 /*
  494                  * When using cookies, the vfs has the option of reading from
  495                  * a different offset than that supplied (UFS truncates the
  496                  * offset to a block boundary to make sure that it never reads
  497                  * partway through a directory entry, even if the directory
  498                  * has been compacted).
  499                  */
  500                 while (len > 0 && ncookies > 0 && *cookiep <= off) {
  501                         bdp = (struct dirent *) inp;
  502                         len -= bdp->d_reclen;
  503                         inp += bdp->d_reclen;
  504                         cookiep++;
  505                         ncookies--;
  506                 }
  507         }
  508 
  509         while (len > 0) {
  510                 if (cookiep && ncookies == 0)
  511                         break;
  512                 bdp = (struct dirent *) inp;
  513                 reclen = bdp->d_reclen;
  514                 if (reclen & 3) {
  515                         error = EFAULT;
  516                         goto out;
  517                 }
  518 
  519                 if (bdp->d_fileno == 0) {
  520                         inp += reclen;
  521                         if (cookiep) {
  522                                 off = *cookiep++;
  523                                 ncookies--;
  524                         } else
  525                                 off += reclen;
  526 
  527                         len -= reclen;
  528                         continue;
  529                 }
  530 
  531                 linuxreclen = (is64bit)
  532                     ? LINUX_RECLEN(&linux_dirent64, bdp->d_namlen)
  533                     : LINUX_RECLEN(&linux_dirent, bdp->d_namlen);
  534 
  535                 if (reclen > len || resid < linuxreclen) {
  536                         outp++;
  537                         break;
  538                 }
  539 
  540                 if (justone) {
  541                         /* readdir(2) case. */
  542                         linux_dirent.d_ino = (l_long)bdp->d_fileno;
  543                         linux_dirent.d_off = (l_off_t)linuxreclen;
  544                         linux_dirent.d_reclen = (l_ushort)bdp->d_namlen;
  545                         strcpy(linux_dirent.d_name, bdp->d_name);
  546                         error = copyout(&linux_dirent, outp, linuxreclen);
  547                 } else {
  548                         if (is64bit) {
  549                                 linux_dirent64.d_ino = bdp->d_fileno;
  550                                 linux_dirent64.d_off = (cookiep)
  551                                     ? (l_off_t)*cookiep
  552                                     : (l_off_t)(off + reclen);
  553                                 linux_dirent64.d_reclen =
  554                                     (l_ushort)linuxreclen;
  555                                 linux_dirent64.d_type = bdp->d_type;
  556                                 strcpy(linux_dirent64.d_name, bdp->d_name);
  557                                 error = copyout(&linux_dirent64, outp,
  558                                     linuxreclen);
  559                         } else {
  560                                 linux_dirent.d_ino = bdp->d_fileno;
  561                                 linux_dirent.d_off = (cookiep)
  562                                     ? (l_off_t)*cookiep
  563                                     : (l_off_t)(off + reclen);
  564                                 linux_dirent.d_reclen = (l_ushort)linuxreclen;
  565                                 strcpy(linux_dirent.d_name, bdp->d_name);
  566                                 error = copyout(&linux_dirent, outp,
  567                                     linuxreclen);
  568                         }
  569                 }
  570                 if (error)
  571                         goto out;
  572 
  573                 inp += reclen;
  574                 if (cookiep) {
  575                         off = *cookiep++;
  576                         ncookies--;
  577                 } else
  578                         off += reclen;
  579 
  580                 outp += linuxreclen;
  581                 resid -= linuxreclen;
  582                 len -= reclen;
  583                 if (justone)
  584                         break;
  585         }
  586 
  587         if (outp == (caddr_t)args->dirent)
  588                 goto again;
  589 
  590         fp->f_offset = off;
  591         if (justone)
  592                 nbytes = resid + linuxreclen;
  593 
  594 eof:
  595         td->td_retval[0] = nbytes - resid;
  596 
  597 out:
  598         if (cookies)
  599                 free(cookies, M_TEMP);
  600 
  601         VOP_UNLOCK(vp, 0, td);
  602         VFS_UNLOCK_GIANT(vfslocked);
  603         fdrop(fp, td);
  604         free(buf, M_TEMP);
  605         return (error);
  606 }
  607 
  608 int
  609 linux_getdents(struct thread *td, struct linux_getdents_args *args)
  610 {
  611 
  612 #ifdef DEBUG
  613         if (ldebug(getdents))
  614                 printf(ARGS(getdents, "%d, *, %d"), args->fd, args->count);
  615 #endif
  616 
  617         return (getdents_common(td, (struct linux_getdents64_args*)args, 0));
  618 }
  619 
  620 int
  621 linux_getdents64(struct thread *td, struct linux_getdents64_args *args)
  622 {
  623 
  624 #ifdef DEBUG
  625         if (ldebug(getdents64))
  626                 printf(ARGS(getdents64, "%d, *, %d"), args->fd, args->count);
  627 #endif
  628 
  629         return (getdents_common(td, args, 1));
  630 }
  631 
  632 /*
  633  * These exist mainly for hooks for doing /compat/linux translation.
  634  */
  635 
  636 int
  637 linux_access(struct thread *td, struct linux_access_args *args)
  638 {
  639         char *path;
  640         int error;
  641 
  642         /* linux convention */
  643         if (args->flags & ~(F_OK | X_OK | W_OK | R_OK))
  644                 return (EINVAL);
  645 
  646         LCONVPATHEXIST(td, args->path, &path);
  647 
  648 #ifdef DEBUG
  649         if (ldebug(access))
  650                 printf(ARGS(access, "%s, %d"), path, args->flags);
  651 #endif
  652         error = kern_access(td, path, UIO_SYSSPACE, args->flags);
  653         LFREEPATH(path);
  654 
  655         return (error);
  656 }
  657 
  658 int
  659 linux_unlink(struct thread *td, struct linux_unlink_args *args)
  660 {
  661         char *path;
  662         int error;
  663         struct stat st;
  664 
  665         LCONVPATHEXIST(td, args->path, &path);
  666 
  667 #ifdef DEBUG
  668         if (ldebug(unlink))
  669                 printf(ARGS(unlink, "%s"), path);
  670 #endif
  671 
  672         error = kern_unlink(td, path, UIO_SYSSPACE);
  673         if (error == EPERM)
  674                 /* Introduce POSIX noncompliant behaviour of Linux */
  675                 if (kern_stat(td, path, UIO_SYSSPACE, &st) == 0)
  676                         if (S_ISDIR(st.st_mode))
  677                                 error = EISDIR;
  678         LFREEPATH(path);
  679         return (error);
  680 }
  681 
  682 int
  683 linux_chdir(struct thread *td, struct linux_chdir_args *args)
  684 {
  685         char *path;
  686         int error;
  687 
  688         LCONVPATHEXIST(td, args->path, &path);
  689 
  690 #ifdef DEBUG
  691         if (ldebug(chdir))
  692                 printf(ARGS(chdir, "%s"), path);
  693 #endif
  694         error = kern_chdir(td, path, UIO_SYSSPACE);
  695         LFREEPATH(path);
  696         return (error);
  697 }
  698 
  699 int
  700 linux_chmod(struct thread *td, struct linux_chmod_args *args)
  701 {
  702         char *path;
  703         int error;
  704 
  705         LCONVPATHEXIST(td, args->path, &path);
  706 
  707 #ifdef DEBUG
  708         if (ldebug(chmod))
  709                 printf(ARGS(chmod, "%s, %d"), path, args->mode);
  710 #endif
  711         error = kern_chmod(td, path, UIO_SYSSPACE, args->mode);
  712         LFREEPATH(path);
  713         return (error);
  714 }
  715 
  716 int
  717 linux_mkdir(struct thread *td, struct linux_mkdir_args *args)
  718 {
  719         char *path;
  720         int error;
  721 
  722         LCONVPATHCREAT(td, args->path, &path);
  723 
  724 #ifdef DEBUG
  725         if (ldebug(mkdir))
  726                 printf(ARGS(mkdir, "%s, %d"), path, args->mode);
  727 #endif
  728         error = kern_mkdir(td, path, UIO_SYSSPACE, args->mode);
  729         LFREEPATH(path);
  730         return (error);
  731 }
  732 
  733 int
  734 linux_rmdir(struct thread *td, struct linux_rmdir_args *args)
  735 {
  736         char *path;
  737         int error;
  738 
  739         LCONVPATHEXIST(td, args->path, &path);
  740 
  741 #ifdef DEBUG
  742         if (ldebug(rmdir))
  743                 printf(ARGS(rmdir, "%s"), path);
  744 #endif
  745         error = kern_rmdir(td, path, UIO_SYSSPACE);
  746         LFREEPATH(path);
  747         return (error);
  748 }
  749 
  750 int
  751 linux_rename(struct thread *td, struct linux_rename_args *args)
  752 {
  753         char *from, *to;
  754         int error;
  755 
  756         LCONVPATHEXIST(td, args->from, &from);
  757         /* Expand LCONVPATHCREATE so that `from' can be freed on errors */
  758         error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1);
  759         if (to == NULL) {
  760                 LFREEPATH(from);
  761                 return (error);
  762         }
  763 
  764 #ifdef DEBUG
  765         if (ldebug(rename))
  766                 printf(ARGS(rename, "%s, %s"), from, to);
  767 #endif
  768         error = kern_rename(td, from, to, UIO_SYSSPACE);
  769         LFREEPATH(from);
  770         LFREEPATH(to);
  771         return (error);
  772 }
  773 
  774 int
  775 linux_symlink(struct thread *td, struct linux_symlink_args *args)
  776 {
  777         char *path, *to;
  778         int error;
  779 
  780         LCONVPATHEXIST(td, args->path, &path);
  781         /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
  782         error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1);
  783         if (to == NULL) {
  784                 LFREEPATH(path);
  785                 return (error);
  786         }
  787 
  788 #ifdef DEBUG
  789         if (ldebug(symlink))
  790                 printf(ARGS(symlink, "%s, %s"), path, to);
  791 #endif
  792         error = kern_symlink(td, path, to, UIO_SYSSPACE);
  793         LFREEPATH(path);
  794         LFREEPATH(to);
  795         return (error);
  796 }
  797 
  798 int
  799 linux_readlink(struct thread *td, struct linux_readlink_args *args)
  800 {
  801         char *name;
  802         int error;
  803 
  804         LCONVPATHEXIST(td, args->name, &name);
  805 
  806 #ifdef DEBUG
  807         if (ldebug(readlink))
  808                 printf(ARGS(readlink, "%s, %p, %d"), name, (void *)args->buf,
  809                     args->count);
  810 #endif
  811         error = kern_readlink(td, name, UIO_SYSSPACE, args->buf, UIO_USERSPACE,
  812             args->count);
  813         LFREEPATH(name);
  814         return (error);
  815 }
  816 
  817 int
  818 linux_truncate(struct thread *td, struct linux_truncate_args *args)
  819 {
  820         char *path;
  821         int error;
  822 
  823         LCONVPATHEXIST(td, args->path, &path);
  824 
  825 #ifdef DEBUG
  826         if (ldebug(truncate))
  827                 printf(ARGS(truncate, "%s, %ld"), path, (long)args->length);
  828 #endif
  829 
  830         error = kern_truncate(td, path, UIO_SYSSPACE, args->length);
  831         LFREEPATH(path);
  832         return (error);
  833 }
  834 
  835 int
  836 linux_ftruncate(struct thread *td, struct linux_ftruncate_args *args)
  837 {
  838         struct ftruncate_args /* {
  839                 int fd;
  840                 int pad;
  841                 off_t length;
  842                 } */ nuap;
  843            
  844         nuap.fd = args->fd;
  845         nuap.length = args->length;
  846         return (ftruncate(td, &nuap));
  847 }
  848 
  849 int
  850 linux_link(struct thread *td, struct linux_link_args *args)
  851 {
  852         char *path, *to;
  853         int error;
  854 
  855         LCONVPATHEXIST(td, args->path, &path);
  856         /* Expand LCONVPATHCREATE so that `path' can be freed on errors */
  857         error = linux_emul_convpath(td, args->to, UIO_USERSPACE, &to, 1);
  858         if (to == NULL) {
  859                 LFREEPATH(path);
  860                 return (error);
  861         }
  862 
  863 #ifdef DEBUG
  864         if (ldebug(link))
  865                 printf(ARGS(link, "%s, %s"), path, to);
  866 #endif
  867         error = kern_link(td, path, to, UIO_SYSSPACE);
  868         LFREEPATH(path);
  869         LFREEPATH(to);
  870         return (error);
  871 }
  872 
  873 int
  874 linux_fdatasync(td, uap)
  875         struct thread *td;
  876         struct linux_fdatasync_args *uap;
  877 {
  878         struct fsync_args bsd;
  879 
  880         bsd.fd = uap->fd;
  881         return fsync(td, &bsd);
  882 }
  883 
  884 int
  885 linux_pread(td, uap)
  886         struct thread *td;
  887         struct linux_pread_args *uap;
  888 {
  889         struct pread_args bsd;
  890         struct vnode *vp;
  891         int error;
  892 
  893         bsd.fd = uap->fd;
  894         bsd.buf = uap->buf;
  895         bsd.nbyte = uap->nbyte;
  896         bsd.offset = uap->offset;
  897 
  898         error = pread(td, &bsd);
  899 
  900         if (error == 0) {
  901                 /* This seems to violate POSIX but linux does it */
  902                 if ((error = fgetvp(td, uap->fd, &vp)) != 0)
  903                         return (error);
  904                 if (vp->v_type == VDIR) {
  905                         vrele(vp);
  906                         return (EISDIR);
  907                 }
  908                 vrele(vp);
  909         }
  910 
  911         return (error);
  912 }
  913 
  914 int
  915 linux_pwrite(td, uap)
  916         struct thread *td;
  917         struct linux_pwrite_args *uap;
  918 {
  919         struct pwrite_args bsd;
  920 
  921         bsd.fd = uap->fd;
  922         bsd.buf = uap->buf;
  923         bsd.nbyte = uap->nbyte;
  924         bsd.offset = uap->offset;
  925         return pwrite(td, &bsd);
  926 }
  927 
  928 int
  929 linux_mount(struct thread *td, struct linux_mount_args *args)
  930 {
  931         struct ufs_args ufs;
  932         char fstypename[MFSNAMELEN];
  933         char mntonname[MNAMELEN], mntfromname[MNAMELEN];
  934         int error;
  935         int fsflags;
  936         void *fsdata;
  937 
  938         error = copyinstr(args->filesystemtype, fstypename, MFSNAMELEN - 1,
  939             NULL);
  940         if (error)
  941                 return (error);
  942         error = copyinstr(args->specialfile, mntfromname, MNAMELEN - 1, NULL);
  943         if (error)
  944                 return (error);
  945         error = copyinstr(args->dir, mntonname, MNAMELEN - 1, NULL);
  946         if (error)
  947                 return (error);
  948 
  949 #ifdef DEBUG
  950         if (ldebug(mount))
  951                 printf(ARGS(mount, "%s, %s, %s"),
  952                     fstypename, mntfromname, mntonname);
  953 #endif
  954 
  955         if (strcmp(fstypename, "ext2") == 0) {
  956                 strcpy(fstypename, "ext2fs");
  957                 fsdata = &ufs;
  958                 ufs.fspec = mntfromname;
  959 #define DEFAULT_ROOTID          -2
  960                 ufs.export.ex_root = DEFAULT_ROOTID;
  961                 ufs.export.ex_flags =
  962                     args->rwflag & LINUX_MS_RDONLY ? MNT_EXRDONLY : 0;
  963         } else if (strcmp(fstypename, "proc") == 0) {
  964                 strcpy(fstypename, "linprocfs");
  965                 fsdata = NULL;
  966         } else {
  967                 return (ENODEV);
  968         }
  969 
  970         fsflags = 0;
  971 
  972         if ((args->rwflag & 0xffff0000) == 0xc0ed0000) {
  973                 /*
  974                  * Linux SYNC flag is not included; the closest equivalent
  975                  * FreeBSD has is !ASYNC, which is our default.
  976                  */
  977                 if (args->rwflag & LINUX_MS_RDONLY)
  978                         fsflags |= MNT_RDONLY;
  979                 if (args->rwflag & LINUX_MS_NOSUID)
  980                         fsflags |= MNT_NOSUID;
  981                 if (args->rwflag & LINUX_MS_NOEXEC)
  982                         fsflags |= MNT_NOEXEC;
  983                 if (args->rwflag & LINUX_MS_REMOUNT)
  984                         fsflags |= MNT_UPDATE;
  985         }
  986 
  987         if (strcmp(fstypename, "linprocfs") == 0) {
  988                 error = kernel_vmount(fsflags,
  989                         "fstype", fstypename,
  990                         "fspath", mntonname,
  991                         NULL);
  992         } else
  993                 error = EOPNOTSUPP;
  994         return (error);
  995 }
  996 
  997 int
  998 linux_oldumount(struct thread *td, struct linux_oldumount_args *args)
  999 {
 1000         struct linux_umount_args args2;
 1001 
 1002         args2.path = args->path;
 1003         args2.flags = 0;
 1004         return (linux_umount(td, &args2));
 1005 }
 1006 
 1007 int
 1008 linux_umount(struct thread *td, struct linux_umount_args *args)
 1009 {
 1010         struct unmount_args bsd;
 1011 
 1012         bsd.path = args->path;
 1013         bsd.flags = args->flags;        /* XXX correct? */
 1014         return (unmount(td, &bsd));
 1015 }
 1016 
 1017 /*
 1018  * fcntl family of syscalls
 1019  */
 1020 
 1021 struct l_flock {
 1022         l_short         l_type;
 1023         l_short         l_whence;
 1024         l_off_t         l_start;
 1025         l_off_t         l_len;
 1026         l_pid_t         l_pid;
 1027 }
 1028 #if defined(__amd64__) && defined(COMPAT_LINUX32)
 1029 __packed
 1030 #endif
 1031 ;
 1032 
 1033 static void
 1034 linux_to_bsd_flock(struct l_flock *linux_flock, struct flock *bsd_flock)
 1035 {
 1036         switch (linux_flock->l_type) {
 1037         case LINUX_F_RDLCK:
 1038                 bsd_flock->l_type = F_RDLCK;
 1039                 break;
 1040         case LINUX_F_WRLCK:
 1041                 bsd_flock->l_type = F_WRLCK;
 1042                 break;
 1043         case LINUX_F_UNLCK:
 1044                 bsd_flock->l_type = F_UNLCK;
 1045                 break;
 1046         default:
 1047                 bsd_flock->l_type = -1;
 1048                 break;
 1049         }
 1050         bsd_flock->l_whence = linux_flock->l_whence;
 1051         bsd_flock->l_start = (off_t)linux_flock->l_start;
 1052         bsd_flock->l_len = (off_t)linux_flock->l_len;
 1053         bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
 1054 }
 1055 
 1056 static void
 1057 bsd_to_linux_flock(struct flock *bsd_flock, struct l_flock *linux_flock)
 1058 {
 1059         switch (bsd_flock->l_type) {
 1060         case F_RDLCK:
 1061                 linux_flock->l_type = LINUX_F_RDLCK;
 1062                 break;
 1063         case F_WRLCK:
 1064                 linux_flock->l_type = LINUX_F_WRLCK;
 1065                 break;
 1066         case F_UNLCK:
 1067                 linux_flock->l_type = LINUX_F_UNLCK;
 1068                 break;
 1069         }
 1070         linux_flock->l_whence = bsd_flock->l_whence;
 1071         linux_flock->l_start = (l_off_t)bsd_flock->l_start;
 1072         linux_flock->l_len = (l_off_t)bsd_flock->l_len;
 1073         linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
 1074 }
 1075 
 1076 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
 1077 struct l_flock64 {
 1078         l_short         l_type;
 1079         l_short         l_whence;
 1080         l_loff_t        l_start;
 1081         l_loff_t        l_len;
 1082         l_pid_t         l_pid;
 1083 }
 1084 #if defined(__amd64__) && defined(COMPAT_LINUX32)
 1085 __packed
 1086 #endif
 1087 ;
 1088 
 1089 static void
 1090 linux_to_bsd_flock64(struct l_flock64 *linux_flock, struct flock *bsd_flock)
 1091 {
 1092         switch (linux_flock->l_type) {
 1093         case LINUX_F_RDLCK:
 1094                 bsd_flock->l_type = F_RDLCK;
 1095                 break;
 1096         case LINUX_F_WRLCK:
 1097                 bsd_flock->l_type = F_WRLCK;
 1098                 break;
 1099         case LINUX_F_UNLCK:
 1100                 bsd_flock->l_type = F_UNLCK;
 1101                 break;
 1102         default:
 1103                 bsd_flock->l_type = -1;
 1104                 break;
 1105         }
 1106         bsd_flock->l_whence = linux_flock->l_whence;
 1107         bsd_flock->l_start = (off_t)linux_flock->l_start;
 1108         bsd_flock->l_len = (off_t)linux_flock->l_len;
 1109         bsd_flock->l_pid = (pid_t)linux_flock->l_pid;
 1110 }
 1111 
 1112 static void
 1113 bsd_to_linux_flock64(struct flock *bsd_flock, struct l_flock64 *linux_flock)
 1114 {
 1115         switch (bsd_flock->l_type) {
 1116         case F_RDLCK:
 1117                 linux_flock->l_type = LINUX_F_RDLCK;
 1118                 break;
 1119         case F_WRLCK:
 1120                 linux_flock->l_type = LINUX_F_WRLCK;
 1121                 break;
 1122         case F_UNLCK:
 1123                 linux_flock->l_type = LINUX_F_UNLCK;
 1124                 break;
 1125         }
 1126         linux_flock->l_whence = bsd_flock->l_whence;
 1127         linux_flock->l_start = (l_loff_t)bsd_flock->l_start;
 1128         linux_flock->l_len = (l_loff_t)bsd_flock->l_len;
 1129         linux_flock->l_pid = (l_pid_t)bsd_flock->l_pid;
 1130 }
 1131 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
 1132 
 1133 static int
 1134 fcntl_common(struct thread *td, struct linux_fcntl64_args *args)
 1135 {
 1136         struct l_flock linux_flock;
 1137         struct flock bsd_flock;
 1138         struct file *fp;
 1139         long arg;
 1140         int error, result;
 1141 
 1142         switch (args->cmd) {
 1143         case LINUX_F_DUPFD:
 1144                 return (kern_fcntl(td, args->fd, F_DUPFD, args->arg));
 1145 
 1146         case LINUX_F_GETFD:
 1147                 return (kern_fcntl(td, args->fd, F_GETFD, 0));
 1148 
 1149         case LINUX_F_SETFD:
 1150                 return (kern_fcntl(td, args->fd, F_SETFD, args->arg));
 1151 
 1152         case LINUX_F_GETFL:
 1153                 error = kern_fcntl(td, args->fd, F_GETFL, 0);
 1154                 result = td->td_retval[0];
 1155                 td->td_retval[0] = 0;
 1156                 if (result & O_RDONLY)
 1157                         td->td_retval[0] |= LINUX_O_RDONLY;
 1158                 if (result & O_WRONLY)
 1159                         td->td_retval[0] |= LINUX_O_WRONLY;
 1160                 if (result & O_RDWR)
 1161                         td->td_retval[0] |= LINUX_O_RDWR;
 1162                 if (result & O_NDELAY)
 1163                         td->td_retval[0] |= LINUX_O_NONBLOCK;
 1164                 if (result & O_APPEND)
 1165                         td->td_retval[0] |= LINUX_O_APPEND;
 1166                 if (result & O_FSYNC)
 1167                         td->td_retval[0] |= LINUX_O_SYNC;
 1168                 if (result & O_ASYNC)
 1169                         td->td_retval[0] |= LINUX_FASYNC;
 1170 #ifdef LINUX_O_NOFOLLOW
 1171                 if (result & O_NOFOLLOW)
 1172                         td->td_retval[0] |= LINUX_O_NOFOLLOW;
 1173 #endif
 1174 #ifdef LINUX_O_DIRECT
 1175                 if (result & O_DIRECT)
 1176                         td->td_retval[0] |= LINUX_O_DIRECT;
 1177 #endif
 1178                 return (error);
 1179 
 1180         case LINUX_F_SETFL:
 1181                 arg = 0;
 1182                 if (args->arg & LINUX_O_NDELAY)
 1183                         arg |= O_NONBLOCK;
 1184                 if (args->arg & LINUX_O_APPEND)
 1185                         arg |= O_APPEND;
 1186                 if (args->arg & LINUX_O_SYNC)
 1187                         arg |= O_FSYNC;
 1188                 if (args->arg & LINUX_FASYNC)
 1189                         arg |= O_ASYNC;
 1190 #ifdef LINUX_O_NOFOLLOW
 1191                 if (args->arg & LINUX_O_NOFOLLOW)
 1192                         arg |= O_NOFOLLOW;
 1193 #endif
 1194 #ifdef LINUX_O_DIRECT
 1195                 if (args->arg & LINUX_O_DIRECT)
 1196                         arg |= O_DIRECT;
 1197 #endif
 1198                 return (kern_fcntl(td, args->fd, F_SETFL, arg));
 1199 
 1200         case LINUX_F_GETLK:
 1201                 error = copyin((void *)args->arg, &linux_flock,
 1202                     sizeof(linux_flock));
 1203                 if (error)
 1204                         return (error);
 1205                 linux_to_bsd_flock(&linux_flock, &bsd_flock);
 1206                 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
 1207                 if (error)
 1208                         return (error);
 1209                 bsd_to_linux_flock(&bsd_flock, &linux_flock);
 1210                 return (copyout(&linux_flock, (void *)args->arg,
 1211                     sizeof(linux_flock)));
 1212 
 1213         case LINUX_F_SETLK:
 1214                 error = copyin((void *)args->arg, &linux_flock,
 1215                     sizeof(linux_flock));
 1216                 if (error)
 1217                         return (error);
 1218                 linux_to_bsd_flock(&linux_flock, &bsd_flock);
 1219                 return (kern_fcntl(td, args->fd, F_SETLK,
 1220                     (intptr_t)&bsd_flock));
 1221 
 1222         case LINUX_F_SETLKW:
 1223                 error = copyin((void *)args->arg, &linux_flock,
 1224                     sizeof(linux_flock));
 1225                 if (error)
 1226                         return (error);
 1227                 linux_to_bsd_flock(&linux_flock, &bsd_flock);
 1228                 return (kern_fcntl(td, args->fd, F_SETLKW,
 1229                      (intptr_t)&bsd_flock));
 1230 
 1231         case LINUX_F_GETOWN:
 1232                 return (kern_fcntl(td, args->fd, F_GETOWN, 0));
 1233 
 1234         case LINUX_F_SETOWN:
 1235                 /*
 1236                  * XXX some Linux applications depend on F_SETOWN having no
 1237                  * significant effect for pipes (SIGIO is not delivered for
 1238                  * pipes under Linux-2.2.35 at least).
 1239                  */
 1240                 error = fget(td, args->fd, &fp);
 1241                 if (error)
 1242                         return (error);
 1243                 if (fp->f_type == DTYPE_PIPE) {
 1244                         fdrop(fp, td);
 1245                         return (EINVAL);
 1246                 }
 1247                 fdrop(fp, td);
 1248 
 1249                 return (kern_fcntl(td, args->fd, F_SETOWN, args->arg));
 1250         }
 1251 
 1252         return (EINVAL);
 1253 }
 1254 
 1255 int
 1256 linux_fcntl(struct thread *td, struct linux_fcntl_args *args)
 1257 {
 1258         struct linux_fcntl64_args args64;
 1259 
 1260 #ifdef DEBUG
 1261         if (ldebug(fcntl))
 1262                 printf(ARGS(fcntl, "%d, %08x, *"), args->fd, args->cmd);
 1263 #endif
 1264 
 1265         args64.fd = args->fd;
 1266         args64.cmd = args->cmd;
 1267         args64.arg = args->arg;
 1268         return (fcntl_common(td, &args64));
 1269 }
 1270 
 1271 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
 1272 int
 1273 linux_fcntl64(struct thread *td, struct linux_fcntl64_args *args)
 1274 {
 1275         struct l_flock64 linux_flock;
 1276         struct flock bsd_flock;
 1277         int error;
 1278 
 1279 #ifdef DEBUG
 1280         if (ldebug(fcntl64))
 1281                 printf(ARGS(fcntl64, "%d, %08x, *"), args->fd, args->cmd);
 1282 #endif
 1283 
 1284         switch (args->cmd) {
 1285         case LINUX_F_GETLK64:
 1286                 error = copyin((void *)args->arg, &linux_flock,
 1287                     sizeof(linux_flock));
 1288                 if (error)
 1289                         return (error);
 1290                 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
 1291                 error = kern_fcntl(td, args->fd, F_GETLK, (intptr_t)&bsd_flock);
 1292                 if (error)
 1293                         return (error);
 1294                 bsd_to_linux_flock64(&bsd_flock, &linux_flock);
 1295                 return (copyout(&linux_flock, (void *)args->arg,
 1296                             sizeof(linux_flock)));
 1297 
 1298         case LINUX_F_SETLK64:
 1299                 error = copyin((void *)args->arg, &linux_flock,
 1300                     sizeof(linux_flock));
 1301                 if (error)
 1302                         return (error);
 1303                 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
 1304                 return (kern_fcntl(td, args->fd, F_SETLK,
 1305                     (intptr_t)&bsd_flock));
 1306 
 1307         case LINUX_F_SETLKW64:
 1308                 error = copyin((void *)args->arg, &linux_flock,
 1309                     sizeof(linux_flock));
 1310                 if (error)
 1311                         return (error);
 1312                 linux_to_bsd_flock64(&linux_flock, &bsd_flock);
 1313                 return (kern_fcntl(td, args->fd, F_SETLKW,
 1314                     (intptr_t)&bsd_flock));
 1315         }
 1316 
 1317         return (fcntl_common(td, args));
 1318 }
 1319 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
 1320 
 1321 int
 1322 linux_chown(struct thread *td, struct linux_chown_args *args)
 1323 {
 1324         char *path;
 1325         int error;
 1326 
 1327         LCONVPATHEXIST(td, args->path, &path);
 1328 
 1329 #ifdef DEBUG
 1330         if (ldebug(chown))
 1331                 printf(ARGS(chown, "%s, %d, %d"), path, args->uid, args->gid);
 1332 #endif
 1333         error = kern_chown(td, path, UIO_SYSSPACE, args->uid, args->gid);
 1334         LFREEPATH(path);
 1335         return (error);
 1336 }
 1337 
 1338 int
 1339 linux_lchown(struct thread *td, struct linux_lchown_args *args)
 1340 {
 1341         char *path;
 1342         int error;
 1343 
 1344         LCONVPATHEXIST(td, args->path, &path);
 1345 
 1346 #ifdef DEBUG
 1347         if (ldebug(lchown))
 1348                 printf(ARGS(lchown, "%s, %d, %d"), path, args->uid, args->gid);
 1349 #endif
 1350         error = kern_lchown(td, path, UIO_SYSSPACE, args->uid, args->gid);
 1351         LFREEPATH(path);
 1352         return (error);
 1353 }
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FreeBSD/Linux Kernel Cross Reference sys/compat/linux/linux_file.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/linux_file.c
