svr4_fcntl.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * Copyright (c) 1998 Mark Newton
    3  * Copyright (c) 1994, 1997 Christos Zoulas.  
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   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. All advertising materials mentioning features or use of this software
   15  *    must display the following acknowledgement:
   16  *      This product includes software developed by Christos Zoulas.
   17  * 4. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __FBSDID("$FreeBSD: src/sys/compat/svr4/svr4_fcntl.c,v 1.32.4.2 2005/01/30 00:59:20 imp Exp $");
   34 
   35 #include "opt_mac.h"
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/file.h>
   40 #include <sys/filedesc.h>
   41 /*#include <sys/ioctl.h>*/
   42 #include <sys/lock.h>
   43 #include <sys/mac.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/syscallsubr.h>
   50 #include <sys/unistd.h>
   51 #include <sys/vnode.h>
   52 
   53 #include <sys/sysproto.h>
   54 
   55 #include <compat/svr4/svr4.h>
   56 #include <compat/svr4/svr4_types.h>
   57 #include <compat/svr4/svr4_signal.h>
   58 #include <compat/svr4/svr4_proto.h>
   59 #include <compat/svr4/svr4_util.h>
   60 #include <compat/svr4/svr4_fcntl.h>
   61 
   62 static int svr4_to_bsd_flags(int);
   63 static u_long svr4_to_bsd_cmd(u_long);
   64 static int fd_revoke(struct thread *, int);
   65 static int fd_truncate(struct thread *, int, struct flock *);
   66 static int bsd_to_svr4_flags(int);
   67 static void bsd_to_svr4_flock(struct flock *, struct svr4_flock *);
   68 static void svr4_to_bsd_flock(struct svr4_flock *, struct flock *);
   69 static void bsd_to_svr4_flock64(struct flock *, struct svr4_flock64 *);
   70 static void svr4_to_bsd_flock64(struct svr4_flock64 *, struct flock *);
   71 
   72 static u_long
   73 svr4_to_bsd_cmd(cmd)
   74         u_long  cmd;
   75 {
   76         switch (cmd) {
   77         case SVR4_F_DUPFD:
   78                 return F_DUPFD;
   79         case SVR4_F_GETFD:
   80                 return F_GETFD;
   81         case SVR4_F_SETFD:
   82                 return F_SETFD;
   83         case SVR4_F_GETFL:
   84                 return F_GETFL;
   85         case SVR4_F_SETFL:
   86                 return F_SETFL;
   87         case SVR4_F_GETLK:
   88                 return F_GETLK;
   89         case SVR4_F_SETLK:
   90                 return F_SETLK;
   91         case SVR4_F_SETLKW:
   92                 return F_SETLKW;
   93         default:
   94                 return -1;
   95         }
   96 }
   97 
   98 static int
   99 svr4_to_bsd_flags(l)
  100         int     l;
  101 {
  102         int     r = 0;
  103         r |= (l & SVR4_O_RDONLY) ? O_RDONLY : 0;
  104         r |= (l & SVR4_O_WRONLY) ? O_WRONLY : 0;
  105         r |= (l & SVR4_O_RDWR) ? O_RDWR : 0;
  106         r |= (l & SVR4_O_NDELAY) ? O_NONBLOCK : 0;
  107         r |= (l & SVR4_O_APPEND) ? O_APPEND : 0;
  108         r |= (l & SVR4_O_SYNC) ? O_FSYNC : 0;
  109         r |= (l & SVR4_O_NONBLOCK) ? O_NONBLOCK : 0;
  110         r |= (l & SVR4_O_PRIV) ? O_EXLOCK : 0;
  111         r |= (l & SVR4_O_CREAT) ? O_CREAT : 0;
  112         r |= (l & SVR4_O_TRUNC) ? O_TRUNC : 0;
  113         r |= (l & SVR4_O_EXCL) ? O_EXCL : 0;
  114         r |= (l & SVR4_O_NOCTTY) ? O_NOCTTY : 0;
  115         return r;
  116 }
  117 
  118 static int
  119 bsd_to_svr4_flags(l)
  120         int     l;
  121 {
  122         int     r = 0;
  123         r |= (l & O_RDONLY) ? SVR4_O_RDONLY : 0;
  124         r |= (l & O_WRONLY) ? SVR4_O_WRONLY : 0;
  125         r |= (l & O_RDWR) ? SVR4_O_RDWR : 0;
  126         r |= (l & O_NDELAY) ? SVR4_O_NONBLOCK : 0;
  127         r |= (l & O_APPEND) ? SVR4_O_APPEND : 0;
  128         r |= (l & O_FSYNC) ? SVR4_O_SYNC : 0;
  129         r |= (l & O_NONBLOCK) ? SVR4_O_NONBLOCK : 0;
  130         r |= (l & O_EXLOCK) ? SVR4_O_PRIV : 0;
  131         r |= (l & O_CREAT) ? SVR4_O_CREAT : 0;
  132         r |= (l & O_TRUNC) ? SVR4_O_TRUNC : 0;
  133         r |= (l & O_EXCL) ? SVR4_O_EXCL : 0;
  134         r |= (l & O_NOCTTY) ? SVR4_O_NOCTTY : 0;
  135         return r;
  136 }
  137 
  138 
  139 static void
  140 bsd_to_svr4_flock(iflp, oflp)
  141         struct flock            *iflp;
  142         struct svr4_flock       *oflp;
  143 {
  144         switch (iflp->l_type) {
  145         case F_RDLCK:
  146                 oflp->l_type = SVR4_F_RDLCK;
  147                 break;
  148         case F_WRLCK:
  149                 oflp->l_type = SVR4_F_WRLCK;
  150                 break;
  151         case F_UNLCK:
  152                 oflp->l_type = SVR4_F_UNLCK;
  153                 break;
  154         default:
  155                 oflp->l_type = -1;
  156                 break;
  157         }
  158 
  159         oflp->l_whence = (short) iflp->l_whence;
  160         oflp->l_start = (svr4_off_t) iflp->l_start;
  161         oflp->l_len = (svr4_off_t) iflp->l_len;
  162         oflp->l_sysid = 0;
  163         oflp->l_pid = (svr4_pid_t) iflp->l_pid;
  164 }
  165 
  166 
  167 static void
  168 svr4_to_bsd_flock(iflp, oflp)
  169         struct svr4_flock       *iflp;
  170         struct flock            *oflp;
  171 {
  172         switch (iflp->l_type) {
  173         case SVR4_F_RDLCK:
  174                 oflp->l_type = F_RDLCK;
  175                 break;
  176         case SVR4_F_WRLCK:
  177                 oflp->l_type = F_WRLCK;
  178                 break;
  179         case SVR4_F_UNLCK:
  180                 oflp->l_type = F_UNLCK;
  181                 break;
  182         default:
  183                 oflp->l_type = -1;
  184                 break;
  185         }
  186 
  187         oflp->l_whence = iflp->l_whence;
  188         oflp->l_start = (off_t) iflp->l_start;
  189         oflp->l_len = (off_t) iflp->l_len;
  190         oflp->l_pid = (pid_t) iflp->l_pid;
  191 
  192 }
  193 
  194 static void
  195 bsd_to_svr4_flock64(iflp, oflp)
  196         struct flock            *iflp;
  197         struct svr4_flock64     *oflp;
  198 {
  199         switch (iflp->l_type) {
  200         case F_RDLCK:
  201                 oflp->l_type = SVR4_F_RDLCK;
  202                 break;
  203         case F_WRLCK:
  204                 oflp->l_type = SVR4_F_WRLCK;
  205                 break;
  206         case F_UNLCK:
  207                 oflp->l_type = SVR4_F_UNLCK;
  208                 break;
  209         default:
  210                 oflp->l_type = -1;
  211                 break;
  212         }
  213 
  214         oflp->l_whence = (short) iflp->l_whence;
  215         oflp->l_start = (svr4_off64_t) iflp->l_start;
  216         oflp->l_len = (svr4_off64_t) iflp->l_len;
  217         oflp->l_sysid = 0;
  218         oflp->l_pid = (svr4_pid_t) iflp->l_pid;
  219 }
  220 
  221 
  222 static void
  223 svr4_to_bsd_flock64(iflp, oflp)
  224         struct svr4_flock64     *iflp;
  225         struct flock            *oflp;
  226 {
  227         switch (iflp->l_type) {
  228         case SVR4_F_RDLCK:
  229                 oflp->l_type = F_RDLCK;
  230                 break;
  231         case SVR4_F_WRLCK:
  232                 oflp->l_type = F_WRLCK;
  233                 break;
  234         case SVR4_F_UNLCK:
  235                 oflp->l_type = F_UNLCK;
  236                 break;
  237         default:
  238                 oflp->l_type = -1;
  239                 break;
  240         }
  241 
  242         oflp->l_whence = iflp->l_whence;
  243         oflp->l_start = (off_t) iflp->l_start;
  244         oflp->l_len = (off_t) iflp->l_len;
  245         oflp->l_pid = (pid_t) iflp->l_pid;
  246 
  247 }
  248 
  249 
  250 static int
  251 fd_revoke(td, fd)
  252         struct thread *td;
  253         int fd;
  254 {
  255         struct vnode *vp;
  256         struct mount *mp;
  257         struct vattr vattr;
  258         int error, *retval;
  259 
  260         retval = td->td_retval;
  261         if ((error = fgetvp(td, fd, &vp)) != 0)
  262                 return (error);
  263 
  264         if (vp->v_type != VCHR && vp->v_type != VBLK) {
  265                 error = EINVAL;
  266                 goto out;
  267         }
  268 
  269 #ifdef MAC
  270         vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
  271         error = mac_check_vnode_revoke(td->td_ucred, vp);
  272         VOP_UNLOCK(vp, 0, td);
  273         if (error)
  274                 goto out;
  275 #endif
  276 
  277         if ((error = VOP_GETATTR(vp, &vattr, td->td_ucred, td)) != 0)
  278                 goto out;
  279 
  280         if (td->td_ucred->cr_uid != vattr.va_uid &&
  281             (error = suser(td)) != 0)
  282                 goto out;
  283 
  284         if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
  285                 goto out;
  286         if (vcount(vp) > 1)
  287                 VOP_REVOKE(vp, REVOKEALL);
  288         vn_finished_write(mp);
  289 out:
  290         vrele(vp);
  291         return error;
  292 }
  293 
  294 
  295 static int
  296 fd_truncate(td, fd, flp)
  297         struct thread *td;
  298         int fd;
  299         struct flock *flp;
  300 {
  301         off_t start, length;
  302         struct file *fp;
  303         struct vnode *vp;
  304         struct vattr vattr;
  305         int error, *retval;
  306         struct ftruncate_args ft;
  307 
  308         retval = td->td_retval;
  309 
  310         /*
  311          * We only support truncating the file.
  312          */
  313         if ((error = fget(td, fd, &fp)) != 0)
  314                 return (error);
  315 
  316         vp = fp->f_vnode;
  317 
  318         if (fp->f_type != DTYPE_VNODE || vp->v_type == VFIFO) {
  319                 fdrop(fp, td);
  320                 return ESPIPE;
  321         }
  322 
  323         if ((error = VOP_GETATTR(vp, &vattr, td->td_ucred, td)) != 0) {
  324                 fdrop(fp, td);
  325                 return error;
  326         }
  327 
  328         length = vattr.va_size;
  329 
  330         switch (flp->l_whence) {
  331         case SEEK_CUR:
  332                 start = fp->f_offset + flp->l_start;
  333                 break;
  334 
  335         case SEEK_END:
  336                 start = flp->l_start + length;
  337                 break;
  338 
  339         case SEEK_SET:
  340                 start = flp->l_start;
  341                 break;
  342 
  343         default:
  344                 fdrop(fp, td);
  345                 return EINVAL;
  346         }
  347 
  348         if (start + flp->l_len < length) {
  349                 /* We don't support free'ing in the middle of the file */
  350                 fdrop(fp, td);
  351                 return EINVAL;
  352         }
  353 
  354         ft.fd = fd;
  355         ft.length = start;
  356 
  357         error = ftruncate(td, &ft);
  358 
  359         fdrop(fp, td);
  360         return (error);
  361 }
  362 
  363 int
  364 svr4_sys_open(td, uap)
  365         register struct thread *td;
  366         struct svr4_sys_open_args *uap;
  367 {
  368         struct proc *p = td->td_proc;
  369         int                     error, retval;
  370         struct open_args        cup;
  371 
  372         caddr_t sg = stackgap_init();
  373         CHECKALTEXIST(td, &sg, uap->path);
  374 
  375         (&cup)->path = uap->path;
  376         (&cup)->flags = svr4_to_bsd_flags(uap->flags);
  377         (&cup)->mode = uap->mode;
  378         error = open(td, &cup);
  379 
  380         if (error) {
  381           /*            uprintf("svr4_open(%s, 0x%0x, 0%o): %d\n", uap->path,
  382                         uap->flags, uap->mode, error);*/
  383                 return error;
  384         }
  385 
  386         retval = td->td_retval[0];
  387 
  388         PROC_LOCK(p);
  389         if (!(cup.flags & O_NOCTTY) && SESS_LEADER(p) &&
  390             !(td->td_proc->p_flag & P_CONTROLT)) {
  391 #if defined(NOTYET)
  392                 struct file     *fp;
  393 
  394                 error = fget(td, retval, &fp);
  395                 PROC_UNLOCK(p);
  396                 /*
  397                  * we may have lost a race the above open() and
  398                  * another thread issuing a close()
  399                  */
  400                 if (error) 
  401                         return (EBADF); /* XXX: correct errno? */
  402                 /* ignore any error, just give it a try */
  403                 if (fp->f_type == DTYPE_VNODE)
  404                         fo_ioctl(fp, TIOCSCTTY, (caddr_t) 0, td->td_ucred,
  405                             td);
  406                 fdrop(fp, td);
  407         } else {
  408                 PROC_UNLOCK(p);
  409         }
  410 #else
  411         }
  412         PROC_UNLOCK(p);
  413 #endif
  414         return error;
  415 }
  416 
  417 int
  418 svr4_sys_open64(td, uap)
  419         register struct thread *td;
  420         struct svr4_sys_open64_args *uap;
  421 {
  422         return svr4_sys_open(td, (struct svr4_sys_open_args *)uap);
  423 }
  424 
  425 int
  426 svr4_sys_creat(td, uap)
  427         register struct thread *td;
  428         struct svr4_sys_creat_args *uap;
  429 {
  430         struct open_args cup;
  431 
  432         caddr_t sg = stackgap_init();
  433         CHECKALTEXIST(td, &sg, uap->path);
  434 
  435         cup.path = uap->path;
  436         cup.mode = uap->mode;
  437         cup.flags = O_WRONLY | O_CREAT | O_TRUNC;
  438 
  439         return open(td, &cup);
  440 }
  441 
  442 int
  443 svr4_sys_creat64(td, uap)
  444         register struct thread *td;
  445         struct svr4_sys_creat64_args *uap;
  446 {
  447         return svr4_sys_creat(td, (struct svr4_sys_creat_args *)uap);
  448 }
  449 
  450 int
  451 svr4_sys_llseek(td, uap)
  452         register struct thread *td;
  453         struct svr4_sys_llseek_args *uap;
  454 {
  455         struct lseek_args ap;
  456 
  457         ap.fd = uap->fd;
  458 
  459 #if BYTE_ORDER == BIG_ENDIAN
  460         ap.offset = (((u_int64_t) uap->offset1) << 32) | 
  461                 uap->offset2;
  462 #else
  463         ap.offset = (((u_int64_t) uap->offset2) << 32) | 
  464                 uap->offset1;
  465 #endif
  466         ap.whence = uap->whence;
  467 
  468         return lseek(td, &ap);
  469 }
  470 
  471 int
  472 svr4_sys_access(td, uap)
  473         register struct thread *td;
  474         struct svr4_sys_access_args *uap;
  475 {
  476         struct access_args cup;
  477         int *retval;
  478 
  479         caddr_t sg = stackgap_init();
  480         CHECKALTEXIST(td, &sg, uap->path);
  481 
  482         retval = td->td_retval;
  483 
  484         cup.path = uap->path;
  485         cup.flags = uap->flags;
  486 
  487         return access(td, &cup);
  488 }
  489 
  490 #if defined(NOTYET)
  491 int
  492 svr4_sys_pread(td, uap)
  493         register struct thread *td;
  494         struct svr4_sys_pread_args *uap;
  495 {
  496         struct pread_args pra;
  497 
  498         /*
  499          * Just translate the args structure and call the NetBSD
  500          * pread(2) system call (offset type is 64-bit in NetBSD).
  501          */
  502         pra.fd = uap->fd;
  503         pra.buf = uap->buf;
  504         pra.nbyte = uap->nbyte;
  505         pra.offset = uap->off;
  506 
  507         return pread(td, &pra);
  508 }
  509 #endif
  510 
  511 #if defined(NOTYET)
  512 int
  513 svr4_sys_pread64(td, v, retval)
  514         register struct thread *td;
  515         void *v; 
  516         register_t *retval;
  517 {
  518 
  519         struct svr4_sys_pread64_args *uap = v;
  520         struct sys_pread_args pra;
  521 
  522         /*
  523          * Just translate the args structure and call the NetBSD
  524          * pread(2) system call (offset type is 64-bit in NetBSD).
  525          */
  526         pra.fd = uap->fd;
  527         pra.buf = uap->buf;
  528         pra.nbyte = uap->nbyte;
  529         pra.offset = uap->off;
  530 
  531         return (sys_pread(td, &pra, retval));
  532 }
  533 #endif /* NOTYET */
  534 
  535 #if defined(NOTYET)
  536 int
  537 svr4_sys_pwrite(td, uap)
  538         register struct thread *td;
  539         struct svr4_sys_pwrite_args *uap;
  540 {
  541         struct pwrite_args pwa;
  542 
  543         /*
  544          * Just translate the args structure and call the NetBSD
  545          * pwrite(2) system call (offset type is 64-bit in NetBSD).
  546          */
  547         pwa.fd = uap->fd;
  548         pwa.buf = uap->buf;
  549         pwa.nbyte = uap->nbyte;
  550         pwa.offset = uap->off;
  551 
  552         return pwrite(td, &pwa);
  553 }
  554 #endif
  555 
  556 #if defined(NOTYET)
  557 int
  558 svr4_sys_pwrite64(td, v, retval)
  559         register struct thread *td;
  560         void *v; 
  561         register_t *retval;
  562 {
  563         struct svr4_sys_pwrite64_args *uap = v;
  564         struct sys_pwrite_args pwa;
  565 
  566         /*
  567          * Just translate the args structure and call the NetBSD
  568          * pwrite(2) system call (offset type is 64-bit in NetBSD).
  569          */
  570         pwa.fd = uap->fd;
  571         pwa.buf = uap->buf;
  572         pwa.nbyte = uap->nbyte;
  573         pwa.offset = uap->off;
  574 
  575         return (sys_pwrite(td, &pwa, retval));
  576 }
  577 #endif /* NOTYET */
  578 
  579 int
  580 svr4_sys_fcntl(td, uap)
  581         register struct thread *td;
  582         struct svr4_sys_fcntl_args *uap;
  583 {
  584         int cmd, error, *retval;
  585 
  586         retval = td->td_retval;
  587 
  588         cmd = svr4_to_bsd_cmd(uap->cmd);
  589 
  590         switch (cmd) {
  591         case F_DUPFD:
  592         case F_GETFD:
  593         case F_SETFD:
  594                 return (kern_fcntl(td, uap->fd, cmd, (intptr_t)uap->arg));
  595 
  596         case F_GETFL:
  597                 error = kern_fcntl(td, uap->fd, cmd, (intptr_t)uap->arg);
  598                 if (error)
  599                         return (error);
  600                 *retval = bsd_to_svr4_flags(*retval);
  601                 return (error);
  602 
  603         case F_SETFL:
  604                 {
  605                         /*
  606                          * we must save the O_ASYNC flag, as that is
  607                          * handled by ioctl(_, I_SETSIG, _) emulation.
  608                          */
  609                         int flags;
  610 
  611                         DPRINTF(("Setting flags %p\n", uap->arg));
  612 
  613                         error = kern_fcntl(td, uap->fd, F_GETFL, 0);
  614                         if (error)
  615                                 return (error);
  616                         flags = *retval;
  617                         flags &= O_ASYNC;
  618                         flags |= svr4_to_bsd_flags((u_long) uap->arg);
  619                         return (kern_fcntl(td, uap->fd, F_SETFL, flags));
  620                 }
  621 
  622         case F_GETLK:
  623         case F_SETLK:
  624         case F_SETLKW:
  625                 {
  626                         struct svr4_flock       ifl;
  627                         struct flock            fl;
  628 
  629                         error = copyin(uap->arg, &ifl, sizeof (ifl));
  630                         if (error)
  631                                 return (error);
  632 
  633                         svr4_to_bsd_flock(&ifl, &fl);
  634 
  635                         error = kern_fcntl(td, uap->fd, cmd, (intptr_t)&fl);
  636                         if (error || cmd != F_GETLK)
  637                                 return (error);
  638 
  639                         bsd_to_svr4_flock(&fl, &ifl);
  640 
  641                         return (copyout(&ifl, uap->arg, sizeof (ifl)));
  642                 }
  643         case -1:
  644                 switch (uap->cmd) {
  645                 case SVR4_F_DUP2FD:
  646                         {
  647                                 struct dup2_args du;
  648 
  649                                 du.from = uap->fd;
  650                                 du.to = (int)uap->arg;
  651                                 error = dup2(td, &du);
  652                                 if (error)
  653                                         return error;
  654                                 *retval = du.to;
  655                                 return 0;
  656                         }
  657 
  658                 case SVR4_F_FREESP:
  659                         {
  660                                 struct svr4_flock        ifl;
  661                                 struct flock             fl;
  662 
  663                                 error = copyin(uap->arg, &ifl,
  664                                     sizeof ifl);
  665                                 if (error)
  666                                         return error;
  667                                 svr4_to_bsd_flock(&ifl, &fl);
  668                                 return fd_truncate(td, uap->fd, &fl);
  669                         }
  670 
  671                 case SVR4_F_GETLK64:
  672                 case SVR4_F_SETLK64:
  673                 case SVR4_F_SETLKW64:
  674                         {
  675                                 struct svr4_flock64     ifl;
  676                                 struct flock            fl;
  677 
  678                                 switch (uap->cmd) {
  679                                 case SVR4_F_GETLK64:
  680                                         cmd = F_GETLK;
  681                                         break;
  682                                 case SVR4_F_SETLK64:
  683                                         cmd = F_SETLK;
  684                                         break;                                  
  685                                 case SVR4_F_SETLKW64:
  686                                         cmd = F_SETLKW;
  687                                         break;
  688                                 }
  689                                 error = copyin(uap->arg, &ifl,
  690                                     sizeof (ifl));
  691                                 if (error)
  692                                         return (error);
  693 
  694                                 svr4_to_bsd_flock64(&ifl, &fl);
  695 
  696                                 error = kern_fcntl(td, uap->fd, cmd,
  697                                     (intptr_t)&fl);
  698                                 if (error || cmd != F_GETLK)
  699                                         return (error);
  700 
  701                                 bsd_to_svr4_flock64(&fl, &ifl);
  702 
  703                                 return (copyout(&ifl, uap->arg,
  704                                     sizeof (ifl)));
  705                         }
  706 
  707                 case SVR4_F_FREESP64:
  708                         {
  709                                 struct svr4_flock64      ifl;
  710                                 struct flock             fl;
  711 
  712                                 error = copyin(uap->arg, &ifl,
  713                                     sizeof ifl);
  714                                 if (error)
  715                                         return error;
  716                                 svr4_to_bsd_flock64(&ifl, &fl);
  717                                 return fd_truncate(td, uap->fd, &fl);
  718                         }
  719 
  720                 case SVR4_F_REVOKE:
  721                         return fd_revoke(td, uap->fd);
  722 
  723                 default:
  724                         return ENOSYS;
  725                 }
  726 
  727         default:
  728                 return ENOSYS;
  729         }
  730 }
Cache object: 05eec869f0956d6046d7a6bc2cf12b49
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/compat/svr4/svr4_fcntl.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/svr4/svr4_fcntl.c
