svr4_misc.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 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. 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  * $FreeBSD$
   29  */
   30 
   31 /*
   32  * SVR4 compatibility module.
   33  *
   34  * SVR4 system calls that are implemented differently in BSD are
   35  * handled here.
   36  */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/namei.h>
   41 #include <sys/dirent.h>
   42 #include <sys/malloc.h>
   43 #include <sys/proc.h>
   44 #include <sys/file.h>
   45 #include <sys/stat.h>
   46 #include <sys/time.h>
   47 #include <sys/file.h>
   48 #include <sys/filedesc.h>
   49 #include <sys/kernel.h>
   50 #include <sys/mman.h>
   51 #include <sys/mount.h>
   52 #include <sys/resource.h>
   53 #include <sys/resourcevar.h>
   54 #include <sys/vnode.h>
   55 #include <sys/uio.h>
   56 #include <sys/wait.h>
   57 #include <sys/times.h>
   58 #include <sys/fcntl.h>
   59 #include <sys/sem.h>
   60 #include <sys/msg.h>
   61 #include <sys/ptrace.h>
   62 #include <vm/vm_zone.h>
   63 
   64 #include <sys/sysproto.h>
   65 
   66 #include <svr4/svr4.h>
   67 #include <svr4/svr4_types.h>
   68 #include <svr4/svr4_signal.h>
   69 #include <svr4/svr4_proto.h>
   70 #include <svr4/svr4_util.h>
   71 #include <svr4/svr4_sysconfig.h>
   72 #include <svr4/svr4_dirent.h>
   73 #include <svr4/svr4_acl.h>
   74 #include <svr4/svr4_ulimit.h>
   75 #include <svr4/svr4_statvfs.h>
   76 #include <svr4/svr4_hrt.h>
   77 #include <svr4/svr4_mman.h>
   78 #include <svr4/svr4_wait.h>
   79 
   80 #include <machine/vmparam.h>
   81 #include <vm/vm.h>
   82 #include <vm/vm_param.h>
   83 #include <vm/vm_map.h>
   84 
   85 #if defined(__FreeBSD__)
   86 #include <vm/vm_extern.h>
   87 #endif
   88 
   89 #if defined(NetBSD)
   90 # if defined(UVM)
   91 #  include <uvm/uvm_extern.h>
   92 # endif
   93 #endif
   94 
   95 #define BSD_DIRENT(cp)          ((struct dirent *)(cp))
   96 
   97 static int svr4_mknod __P((struct proc *, register_t *, char *,
   98     svr4_mode_t, svr4_dev_t));
   99 
  100 static __inline clock_t timeval_to_clock_t __P((struct timeval *));
  101 static int svr4_setinfo __P((struct proc *, int, svr4_siginfo_t *));
  102 
  103 struct svr4_hrtcntl_args;
  104 static int svr4_hrtcntl __P((struct proc *, struct svr4_hrtcntl_args *,
  105     register_t *));
  106 static void bsd_statfs_to_svr4_statvfs __P((const struct statfs *,
  107     struct svr4_statvfs *));
  108 static void bsd_statfs_to_svr4_statvfs64 __P((const struct statfs *,
  109     struct svr4_statvfs64 *));
  110 static struct proc *svr4_pfind __P((pid_t pid));
  111 
  112 /* BOGUS noop */
  113 #if defined(BOGUS)
  114 int
  115 svr4_sys_setitimer(p, uap)
  116         register struct proc *p;
  117         struct svr4_sys_setitimer_args *uap;
  118 {
  119         p->p_retval[0] = 0;
  120         return 0;
  121 }
  122 #endif
  123 
  124 int
  125 svr4_sys_wait(p, uap)
  126         struct proc *p;
  127         struct svr4_sys_wait_args *uap;
  128 {
  129         struct wait_args w4;
  130         int error, *retval = p->p_retval, st, sig;
  131         size_t sz = sizeof(*SCARG(&w4, status));
  132 
  133         SCARG(&w4, rusage) = NULL;
  134         SCARG(&w4, options) = 0;
  135 
  136         if (SCARG(uap, status) == NULL) {
  137                 caddr_t sg = stackgap_init();
  138 
  139                 SCARG(&w4, status) = stackgap_alloc(&sg, sz);
  140         }
  141         else
  142                 SCARG(&w4, status) = SCARG(uap, status);
  143 
  144         SCARG(&w4, pid) = WAIT_ANY;
  145 
  146         if ((error = wait4(p, &w4)) != 0)
  147                 return error;
  148       
  149         if ((error = copyin(SCARG(&w4, status), &st, sizeof(st))) != 0)
  150                 return error;
  151 
  152         if (WIFSIGNALED(st)) {
  153                 sig = WTERMSIG(st);
  154                 if (sig >= 0 && sig < NSIG)
  155                         st = (st & ~0177) | SVR4_BSD2SVR4_SIG(sig);
  156         } else if (WIFSTOPPED(st)) {
  157                 sig = WSTOPSIG(st);
  158                 if (sig >= 0 && sig < NSIG)
  159                         st = (st & ~0xff00) | (SVR4_BSD2SVR4_SIG(sig) << 8);
  160         }
  161 
  162         /*
  163          * It looks like wait(2) on svr4/solaris/2.4 returns
  164          * the status in retval[1], and the pid on retval[0].
  165          */
  166         retval[1] = st;
  167 
  168         if (SCARG(uap, status))
  169                 if ((error = copyout(&st, SCARG(uap, status), sizeof(st))) != 0)
  170                         return error;
  171 
  172         return 0;
  173 }
  174 
  175 int
  176 svr4_sys_execv(p, uap)
  177         struct proc *p;
  178         struct svr4_sys_execv_args *uap;
  179 {
  180         struct execve_args ap;
  181         caddr_t sg;
  182 
  183         sg = stackgap_init();
  184         CHECKALTEXIST(p, &sg, SCARG(uap, path));
  185 
  186         SCARG(&ap, fname) = SCARG(uap, path);
  187         SCARG(&ap, argv) = SCARG(uap, argp);
  188         SCARG(&ap, envv) = NULL;
  189 
  190         return execve(p, &ap);
  191 }
  192 
  193 int
  194 svr4_sys_execve(p, uap)
  195         struct proc *p;
  196         struct svr4_sys_execve_args *uap;
  197 {
  198         struct execve_args ap;
  199         caddr_t sg;
  200 
  201         sg = stackgap_init();
  202         CHECKALTEXIST(p, &sg, uap->path);
  203 
  204         SCARG(&ap, fname) = SCARG(uap, path);
  205         SCARG(&ap, argv) = SCARG(uap, argp);
  206         SCARG(&ap, envv) = SCARG(uap, envp);
  207 
  208         return execve(p, &ap);
  209 }
  210 
  211 int
  212 svr4_sys_time(p, v)
  213         struct proc *p;
  214         struct svr4_sys_time_args *v;
  215 {
  216         struct svr4_sys_time_args *uap = v;
  217         int error = 0;
  218         struct timeval tv;
  219 
  220         microtime(&tv);
  221         if (SCARG(uap, t))
  222                 error = copyout(&tv.tv_sec, SCARG(uap, t),
  223                                 sizeof(*(SCARG(uap, t))));
  224         p->p_retval[0] = (int) tv.tv_sec;
  225 
  226         return error;
  227 }
  228 
  229 
  230 /*
  231  * Read SVR4-style directory entries.  We suck them into kernel space so
  232  * that they can be massaged before being copied out to user code.  
  233  *
  234  * This code is ported from the Linux emulator:  Changes to the VFS interface
  235  * between FreeBSD and NetBSD have made it simpler to port it from there than
  236  * to adapt the NetBSD version.
  237  */
  238 int
  239 svr4_sys_getdents64(p, uap)
  240         struct proc *p;
  241         struct svr4_sys_getdents64_args *uap;
  242 {
  243         register struct dirent *bdp;
  244         struct vnode *vp;
  245         caddr_t inp, buf;               /* BSD-format */
  246         int len, reclen;                /* BSD-format */
  247         caddr_t outp;                   /* SVR4-format */
  248         int resid, svr4reclen=0;        /* SVR4-format */
  249         struct file *fp;
  250         struct uio auio;
  251         struct iovec aiov;
  252         struct vattr va;
  253         off_t off;
  254         struct svr4_dirent64 svr4_dirent;
  255         int buflen, error, eofflag, nbytes, justone;
  256         u_long *cookies = NULL, *cookiep;
  257         int ncookies;
  258 
  259         DPRINTF(("svr4_sys_getdents64(%d, *, %d)\n",
  260                 p->p_pid, SCARG(uap, fd), SCARG(uap, nbytes)));
  261         if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) {
  262                 return (error);
  263         }
  264 
  265         if ((fp->f_flag & FREAD) == 0)
  266                 return (EBADF);
  267 
  268         vp = (struct vnode *) fp->f_data;
  269 
  270         if (vp->v_type != VDIR)
  271                 return (EINVAL);
  272 
  273         if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p))) {
  274                 return error;
  275         }
  276 
  277         nbytes = SCARG(uap, nbytes);
  278         if (nbytes == 1) {
  279                 nbytes = sizeof (struct svr4_dirent64);
  280                 justone = 1;
  281         }
  282         else
  283                 justone = 0;
  284 
  285         off = fp->f_offset;
  286 #define DIRBLKSIZ       512             /* XXX we used to use ufs's DIRBLKSIZ */
  287         buflen = max(DIRBLKSIZ, nbytes);
  288         buflen = min(buflen, MAXBSIZE);
  289         buf = malloc(buflen, M_TEMP, M_WAITOK);
  290         vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
  291 again:
  292         aiov.iov_base = buf;
  293         aiov.iov_len = buflen;
  294         auio.uio_iov = &aiov;
  295         auio.uio_iovcnt = 1;
  296         auio.uio_rw = UIO_READ;
  297         auio.uio_segflg = UIO_SYSSPACE;
  298         auio.uio_procp = p;
  299         auio.uio_resid = buflen;
  300         auio.uio_offset = off;
  301 
  302         if (cookies) {
  303                 free(cookies, M_TEMP);
  304                 cookies = NULL;
  305         }
  306 
  307         error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag,
  308                                                 &ncookies, &cookies);
  309         if (error) {
  310                 goto out;
  311         }
  312 
  313         inp = buf;
  314         outp = (caddr_t) SCARG(uap, dp);
  315         resid = nbytes;
  316         if ((len = buflen - auio.uio_resid) <= 0) {
  317                 goto eof;
  318         }
  319 
  320         cookiep = cookies;
  321 
  322         if (cookies) {
  323                 /*
  324                  * When using cookies, the vfs has the option of reading from
  325                  * a different offset than that supplied (UFS truncates the
  326                  * offset to a block boundary to make sure that it never reads
  327                  * partway through a directory entry, even if the directory
  328                  * has been compacted).
  329                  */
  330                 while (len > 0 && ncookies > 0 && *cookiep <= off) {
  331                         bdp = (struct dirent *) inp;
  332                         len -= bdp->d_reclen;
  333                         inp += bdp->d_reclen;
  334                         cookiep++;
  335                         ncookies--;
  336                 }
  337         }
  338 
  339         while (len > 0) {
  340                 if (cookiep && ncookies == 0)
  341                         break;
  342                 bdp = (struct dirent *) inp;
  343                 reclen = bdp->d_reclen;
  344                 if (reclen & 3) {
  345                         DPRINTF(("svr4_readdir: reclen=%d\n", reclen));
  346                         error = EFAULT;
  347                         goto out;
  348                 }
  349   
  350                 if (bdp->d_fileno == 0) {
  351                         inp += reclen;
  352                         if (cookiep) {
  353                                 off = *cookiep++;
  354                                 ncookies--;
  355                         } else
  356                                 off += reclen;
  357                         len -= reclen;
  358                         continue;
  359                 }
  360                 svr4reclen = SVR4_RECLEN(&svr4_dirent, bdp->d_namlen);
  361                 if (reclen > len || resid < svr4reclen) {
  362                         outp++;
  363                         break;
  364                 }
  365                 svr4_dirent.d_ino = (long) bdp->d_fileno;
  366                 if (justone) {
  367                         /*
  368                          * old svr4-style readdir usage.
  369                          */
  370                         svr4_dirent.d_off = (svr4_off_t) svr4reclen;
  371                         svr4_dirent.d_reclen = (u_short) bdp->d_namlen;
  372                 } else {
  373                         svr4_dirent.d_off = (svr4_off_t)(off + reclen);
  374                         svr4_dirent.d_reclen = (u_short) svr4reclen;
  375                 }
  376                 strcpy(svr4_dirent.d_name, bdp->d_name);
  377                 if ((error = copyout((caddr_t)&svr4_dirent, outp, svr4reclen)))
  378                         goto out;
  379                 inp += reclen;
  380                 if (cookiep) {
  381                         off = *cookiep++;
  382                         ncookies--;
  383                 } else
  384                         off += reclen;
  385                 outp += svr4reclen;
  386                 resid -= svr4reclen;
  387                 len -= reclen;
  388                 if (justone)
  389                         break;
  390         }
  391 
  392         if (outp == (caddr_t) SCARG(uap, dp))
  393                 goto again;
  394         fp->f_offset = off;
  395 
  396         if (justone)
  397                 nbytes = resid + svr4reclen;
  398 
  399 eof:
  400         p->p_retval[0] = nbytes - resid;
  401 out:
  402         if (cookies)
  403                 free(cookies, M_TEMP);
  404         VOP_UNLOCK(vp, 0, p);
  405         free(buf, M_TEMP);
  406         return error;
  407 }
  408 
  409 
  410 int
  411 svr4_sys_getdents(p, uap)
  412         struct proc *p;
  413         struct svr4_sys_getdents_args *uap;
  414 {
  415         struct dirent *bdp;
  416         struct vnode *vp;
  417         caddr_t inp, buf;       /* BSD-format */
  418         int len, reclen;        /* BSD-format */
  419         caddr_t outp;           /* SVR4-format */
  420         int resid, svr4_reclen; /* SVR4-format */
  421         struct file *fp;
  422         struct uio auio;
  423         struct iovec aiov;
  424         struct svr4_dirent idb;
  425         off_t off;              /* true file offset */
  426         int buflen, error, eofflag;
  427         u_long *cookiebuf = NULL, *cookie;
  428         int ncookies = 0, *retval = p->p_retval;
  429 
  430         if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
  431                 return (error);
  432 
  433         if ((fp->f_flag & FREAD) == 0)
  434                 return (EBADF);
  435 
  436         vp = (struct vnode *)fp->f_data;
  437         if (vp->v_type != VDIR)
  438                 return (EINVAL);
  439 
  440         buflen = min(MAXBSIZE, SCARG(uap, nbytes));
  441         buf = malloc(buflen, M_TEMP, M_WAITOK);
  442         vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
  443         off = fp->f_offset;
  444 again:
  445         aiov.iov_base = buf;
  446         aiov.iov_len = buflen;
  447         auio.uio_iov = &aiov;
  448         auio.uio_iovcnt = 1;
  449         auio.uio_rw = UIO_READ;
  450         auio.uio_segflg = UIO_SYSSPACE;
  451         auio.uio_procp = p;
  452         auio.uio_resid = buflen;
  453         auio.uio_offset = off;
  454         /*
  455          * First we read into the malloc'ed buffer, then
  456          * we massage it into user space, one record at a time.
  457          */
  458         error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
  459             &cookiebuf);
  460         if (error)
  461                 goto out;
  462 
  463         inp = buf;
  464         outp = SCARG(uap, buf);
  465         resid = SCARG(uap, nbytes);
  466         if ((len = buflen - auio.uio_resid) == 0)
  467                 goto eof;
  468 
  469         for (cookie = cookiebuf; len > 0; len -= reclen) {
  470                 bdp = (struct dirent *)inp;
  471                 reclen = bdp->d_reclen;
  472                 if (reclen & 3)
  473                         panic("svr4_sys_getdents64: bad reclen");
  474                 off = *cookie++;        /* each entry points to the next */
  475                 if ((off >> 32) != 0) {
  476                         uprintf("svr4_sys_getdents64: dir offset too large for emulated program");
  477                         error = EINVAL;
  478                         goto out;
  479                 }
  480                 if (bdp->d_fileno == 0) {
  481                         inp += reclen;  /* it is a hole; squish it out */
  482                         continue;
  483                 }
  484                 svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
  485                 if (reclen > len || resid < svr4_reclen) {
  486                         /* entry too big for buffer, so just stop */
  487                         outp++;
  488                         break;
  489                 }
  490                 /*
  491                  * Massage in place to make a SVR4-shaped dirent (otherwise
  492                  * we have to worry about touching user memory outside of
  493                  * the copyout() call).
  494                  */
  495                 idb.d_ino = (svr4_ino_t)bdp->d_fileno;
  496                 idb.d_off = (svr4_off_t)off;
  497                 idb.d_reclen = (u_short)svr4_reclen;
  498                 strcpy(idb.d_name, bdp->d_name);
  499                 if ((error = copyout((caddr_t)&idb, outp, svr4_reclen)))
  500                         goto out;
  501                 /* advance past this real entry */
  502                 inp += reclen;
  503                 /* advance output past SVR4-shaped entry */
  504                 outp += svr4_reclen;
  505                 resid -= svr4_reclen;
  506         }
  507 
  508         /* if we squished out the whole block, try again */
  509         if (outp == SCARG(uap, buf))
  510                 goto again;
  511         fp->f_offset = off;     /* update the vnode offset */
  512 
  513 eof:
  514         *retval = SCARG(uap, nbytes) - resid;
  515 out:
  516         VOP_UNLOCK(vp, 0, p);
  517         if (cookiebuf)
  518                 free(cookiebuf, M_TEMP);
  519         free(buf, M_TEMP);
  520         return error;
  521 }
  522 
  523 
  524 int
  525 svr4_sys_mmap(p, uap)
  526         struct proc *p;
  527         struct svr4_sys_mmap_args *uap;
  528 {
  529         struct mmap_args         mm;
  530         int             *retval;
  531 
  532         retval = p->p_retval;
  533 #define _MAP_NEW        0x80000000
  534         /*
  535          * Verify the arguments.
  536          */
  537         if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
  538                 return EINVAL;  /* XXX still needed? */
  539 
  540         if (SCARG(uap, len) == 0)
  541                 return EINVAL;
  542 
  543         SCARG(&mm, prot) = SCARG(uap, prot);
  544         SCARG(&mm, len) = SCARG(uap, len);
  545         SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
  546         SCARG(&mm, fd) = SCARG(uap, fd);
  547         SCARG(&mm, addr) = SCARG(uap, addr);
  548         SCARG(&mm, pos) = SCARG(uap, pos);
  549 
  550         return mmap(p, &mm);
  551 }
  552 
  553 int
  554 svr4_sys_mmap64(p, uap)
  555         struct proc *p;
  556         struct svr4_sys_mmap64_args *uap;
  557 {
  558         struct mmap_args         mm;
  559         void            *rp;
  560 
  561 #define _MAP_NEW        0x80000000
  562         /*
  563          * Verify the arguments.
  564          */
  565         if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
  566                 return EINVAL;  /* XXX still needed? */
  567 
  568         if (SCARG(uap, len) == 0)
  569                 return EINVAL;
  570 
  571         SCARG(&mm, prot) = SCARG(uap, prot);
  572         SCARG(&mm, len) = SCARG(uap, len);
  573         SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
  574         SCARG(&mm, fd) = SCARG(uap, fd);
  575         SCARG(&mm, addr) = SCARG(uap, addr);
  576         SCARG(&mm, pos) = SCARG(uap, pos);
  577 
  578         rp = (void *) round_page((vm_offset_t)(p->p_vmspace->vm_daddr + maxdsiz));
  579         if ((SCARG(&mm, flags) & MAP_FIXED) == 0 &&
  580             SCARG(&mm, addr) != 0 && (void *)SCARG(&mm, addr) < rp)
  581                 SCARG(&mm, addr) = rp;
  582 
  583         return mmap(p, &mm);
  584 }
  585 
  586 
  587 int
  588 svr4_sys_fchroot(p, uap)
  589         struct proc *p;
  590         struct svr4_sys_fchroot_args *uap;
  591 {
  592         struct filedesc *fdp = p->p_fd;
  593         struct vnode    *vp;
  594         struct file     *fp;
  595         int              error;
  596 
  597         if ((error = suser(p)) != 0)
  598                 return error;
  599         if ((error = getvnode(fdp, SCARG(uap, fd), &fp)) != 0)
  600                 return error;
  601         vp = (struct vnode *) fp->f_data;
  602         vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
  603         if (vp->v_type != VDIR)
  604                 error = ENOTDIR;
  605         else
  606                 error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
  607         VOP_UNLOCK(vp, 0, p);
  608         if (error)
  609                 return error;
  610         VREF(vp);
  611         if (fdp->fd_rdir != NULL)
  612                 vrele(fdp->fd_rdir);
  613         fdp->fd_rdir = vp;
  614         return 0;
  615 }
  616 
  617 
  618 static int
  619 svr4_mknod(p, retval, path, mode, dev)
  620         struct proc *p;
  621         register_t *retval;
  622         char *path;
  623         svr4_mode_t mode;
  624         svr4_dev_t dev;
  625 {
  626         caddr_t sg = stackgap_init();
  627 
  628         CHECKALTEXIST(p, &sg, path);
  629 
  630         if (S_ISFIFO(mode)) {
  631                 struct mkfifo_args ap;
  632                 SCARG(&ap, path) = path;
  633                 SCARG(&ap, mode) = mode;
  634                 return mkfifo(p, &ap);
  635         } else {
  636                 struct mknod_args ap;
  637                 SCARG(&ap, path) = path;
  638                 SCARG(&ap, mode) = mode;
  639                 SCARG(&ap, dev) = dev;
  640                 return mknod(p, &ap);
  641         }
  642 }
  643 
  644 
  645 int
  646 svr4_sys_mknod(p, uap)
  647         register struct proc *p;
  648         struct svr4_sys_mknod_args *uap;
  649 {
  650         int *retval = p->p_retval;
  651         return svr4_mknod(p, retval,
  652                           SCARG(uap, path), SCARG(uap, mode),
  653                           (svr4_dev_t)svr4_to_bsd_odev_t(SCARG(uap, dev)));
  654 }
  655 
  656 
  657 int
  658 svr4_sys_xmknod(p, uap)
  659         struct proc *p;
  660         struct svr4_sys_xmknod_args *uap;
  661 {
  662         int *retval = p->p_retval;
  663         return svr4_mknod(p, retval,
  664                           SCARG(uap, path), SCARG(uap, mode),
  665                           (svr4_dev_t)svr4_to_bsd_dev_t(SCARG(uap, dev)));
  666 }
  667 
  668 
  669 int
  670 svr4_sys_vhangup(p, uap)
  671         struct proc *p;
  672         struct svr4_sys_vhangup_args *uap;
  673 {
  674         return 0;
  675 }
  676 
  677 
  678 int
  679 svr4_sys_sysconfig(p, uap)
  680         struct proc *p;
  681         struct svr4_sys_sysconfig_args *uap;
  682 {
  683         int *retval;
  684 
  685         retval = &(p->p_retval[0]);
  686 
  687         switch (SCARG(uap, name)) {
  688         case SVR4_CONFIG_UNUSED:
  689                 *retval = 0;
  690                 break;
  691         case SVR4_CONFIG_NGROUPS:
  692                 *retval = NGROUPS_MAX;
  693                 break;
  694         case SVR4_CONFIG_CHILD_MAX:
  695                 *retval = maxproc;
  696                 break;
  697         case SVR4_CONFIG_OPEN_FILES:
  698                 *retval = maxfiles;
  699                 break;
  700         case SVR4_CONFIG_POSIX_VER:
  701                 *retval = 198808;
  702                 break;
  703         case SVR4_CONFIG_PAGESIZE:
  704                 *retval = PAGE_SIZE;
  705                 break;
  706         case SVR4_CONFIG_CLK_TCK:
  707                 *retval = 60;   /* should this be `hz', ie. 100? */
  708                 break;
  709         case SVR4_CONFIG_XOPEN_VER:
  710                 *retval = 2;    /* XXX: What should that be? */
  711                 break;
  712         case SVR4_CONFIG_PROF_TCK:
  713                 *retval = 60;   /* XXX: What should that be? */
  714                 break;
  715         case SVR4_CONFIG_NPROC_CONF:
  716                 *retval = 1;    /* Only one processor for now */
  717                 break;
  718         case SVR4_CONFIG_NPROC_ONLN:
  719                 *retval = 1;    /* And it better be online */
  720                 break;
  721         case SVR4_CONFIG_AIO_LISTIO_MAX:
  722         case SVR4_CONFIG_AIO_MAX:
  723         case SVR4_CONFIG_AIO_PRIO_DELTA_MAX:
  724                 *retval = 0;    /* No aio support */
  725                 break;
  726         case SVR4_CONFIG_DELAYTIMER_MAX:
  727                 *retval = 0;    /* No delaytimer support */
  728                 break;
  729         case SVR4_CONFIG_MQ_OPEN_MAX:
  730                 *retval = msginfo.msgmni;
  731                 break;
  732         case SVR4_CONFIG_MQ_PRIO_MAX:
  733                 *retval = 0;    /* XXX: Don't know */
  734                 break;
  735         case SVR4_CONFIG_RTSIG_MAX:
  736                 *retval = 0;
  737                 break;
  738         case SVR4_CONFIG_SEM_NSEMS_MAX:
  739                 *retval = seminfo.semmni;
  740                 break;
  741         case SVR4_CONFIG_SEM_VALUE_MAX:
  742                 *retval = seminfo.semvmx;
  743                 break;
  744         case SVR4_CONFIG_SIGQUEUE_MAX:
  745                 *retval = 0;    /* XXX: Don't know */
  746                 break;
  747         case SVR4_CONFIG_SIGRT_MIN:
  748         case SVR4_CONFIG_SIGRT_MAX:
  749                 *retval = 0;    /* No real time signals */
  750                 break;
  751         case SVR4_CONFIG_TIMER_MAX:
  752                 *retval = 3;    /* XXX: real, virtual, profiling */
  753                 break;
  754 #if defined(NOTYET)
  755         case SVR4_CONFIG_PHYS_PAGES:
  756 #if defined(UVM)
  757                 *retval = uvmexp.free;  /* XXX: free instead of total */
  758 #else
  759                 *retval = cnt.v_free_count;     /* XXX: free instead of total */
  760 #endif
  761                 break;
  762         case SVR4_CONFIG_AVPHYS_PAGES:
  763 #if defined(UVM)
  764                 *retval = uvmexp.active;        /* XXX: active instead of avg */
  765 #else
  766                 *retval = cnt.v_active_count;   /* XXX: active instead of avg */
  767 #endif
  768                 break;
  769 #endif /* NOTYET */
  770 
  771         default:
  772                 return EINVAL;
  773         }
  774         return 0;
  775 }
  776 
  777 extern int swap_pager_full;
  778 
  779 /* ARGSUSED */
  780 int
  781 svr4_sys_break(p, uap)
  782         struct proc *p;
  783         struct svr4_sys_break_args *uap;
  784 {
  785         struct vmspace *vm = p->p_vmspace;
  786         vm_offset_t new, old, base, ns;
  787         int rv;
  788 
  789         base = round_page((vm_offset_t) vm->vm_daddr);
  790         ns = (vm_offset_t)SCARG(uap, nsize);
  791         new = round_page(ns);
  792         if (new > base) {
  793           if ((new - base) > (unsigned) p->p_rlimit[RLIMIT_DATA].rlim_cur) {
  794                         return ENOMEM;
  795           }
  796           if (new >= VM_MAXUSER_ADDRESS) {
  797             return (ENOMEM);
  798           }
  799         } else if (new < base) {
  800                 /*
  801                  * This is simply an invalid value.  If someone wants to
  802                  * do fancy address space manipulations, mmap and munmap
  803                  * can do most of what the user would want.
  804                  */
  805                 return EINVAL;
  806         }
  807 
  808         old = base + ctob(vm->vm_dsize);
  809 
  810         if (new > old) {
  811                 vm_size_t diff;
  812                 diff = new - old;
  813                 if (vm->vm_map.size + diff > p->p_rlimit[RLIMIT_VMEM].rlim_cur)
  814                         return(ENOMEM);
  815                 rv = vm_map_find(&vm->vm_map, NULL, 0, &old, diff, FALSE,
  816                         VM_PROT_ALL, VM_PROT_ALL, 0);
  817                 if (rv != KERN_SUCCESS) {
  818                         return (ENOMEM);
  819                 }
  820                 vm->vm_dsize += btoc(diff);
  821         } else if (new < old) {
  822                 rv = vm_map_remove(&vm->vm_map, new, old);
  823                 if (rv != KERN_SUCCESS) {
  824                         return (ENOMEM);
  825                 }
  826                 vm->vm_dsize -= btoc(old - new);
  827         }
  828 
  829         return (0);
  830 }
  831 
  832 static __inline clock_t
  833 timeval_to_clock_t(tv)
  834         struct timeval *tv;
  835 {
  836         return tv->tv_sec * hz + tv->tv_usec / (1000000 / hz);
  837 }
  838 
  839 
  840 int
  841 svr4_sys_times(p, uap)
  842         struct proc *p;
  843         struct svr4_sys_times_args *uap;
  844 {
  845         int                      error, *retval = p->p_retval;
  846         struct tms               tms;
  847         struct timeval           t;
  848         struct rusage           *ru;
  849         struct rusage            r;
  850         struct getrusage_args    ga;
  851 
  852         caddr_t sg = stackgap_init();
  853         ru = stackgap_alloc(&sg, sizeof(struct rusage));
  854 
  855         SCARG(&ga, who) = RUSAGE_SELF;
  856         SCARG(&ga, rusage) = ru;
  857 
  858         error = getrusage(p, &ga);
  859         if (error)
  860                 return error;
  861 
  862         if ((error = copyin(ru, &r, sizeof r)) != 0)
  863                 return error;
  864 
  865         tms.tms_utime = timeval_to_clock_t(&r.ru_utime);
  866         tms.tms_stime = timeval_to_clock_t(&r.ru_stime);
  867 
  868         SCARG(&ga, who) = RUSAGE_CHILDREN;
  869         error = getrusage(p, &ga);
  870         if (error)
  871                 return error;
  872 
  873         if ((error = copyin(ru, &r, sizeof r)) != 0)
  874                 return error;
  875 
  876         tms.tms_cutime = timeval_to_clock_t(&r.ru_utime);
  877         tms.tms_cstime = timeval_to_clock_t(&r.ru_stime);
  878 
  879         microtime(&t);
  880         *retval = timeval_to_clock_t(&t);
  881 
  882         return copyout(&tms, SCARG(uap, tp), sizeof(tms));
  883 }
  884 
  885 
  886 int
  887 svr4_sys_ulimit(p, uap)
  888         struct proc *p;
  889         struct svr4_sys_ulimit_args *uap;
  890 {
  891         int *retval = p->p_retval;
  892 
  893         switch (SCARG(uap, cmd)) {
  894         case SVR4_GFILLIM:
  895                 *retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur / 512;
  896                 if (*retval == -1)
  897                         *retval = 0x7fffffff;
  898                 return 0;
  899 
  900         case SVR4_SFILLIM:
  901                 {
  902                         int error;
  903                         struct __setrlimit_args srl;
  904                         struct rlimit krl;
  905                         caddr_t sg = stackgap_init();
  906                         struct rlimit *url = (struct rlimit *) 
  907                                 stackgap_alloc(&sg, sizeof *url);
  908 
  909                         krl.rlim_cur = SCARG(uap, newlimit) * 512;
  910                         krl.rlim_max = p->p_rlimit[RLIMIT_FSIZE].rlim_max;
  911 
  912                         error = copyout(&krl, url, sizeof(*url));
  913                         if (error)
  914                                 return error;
  915 
  916                         SCARG(&srl, which) = RLIMIT_FSIZE;
  917                         SCARG(&srl, rlp) = (struct orlimit *)url;
  918 
  919                         error = setrlimit(p, &srl);
  920                         if (error)
  921                                 return error;
  922 
  923                         *retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur;
  924                         if (*retval == -1)
  925                                 *retval = 0x7fffffff;
  926                         return 0;
  927                 }
  928 
  929         case SVR4_GMEMLIM:
  930                 {
  931                         struct vmspace *vm = p->p_vmspace;
  932                         register_t r = p->p_rlimit[RLIMIT_DATA].rlim_cur;
  933 
  934                         if (r == -1)
  935                                 r = 0x7fffffff;
  936                         r += (long) vm->vm_daddr;
  937                         if (r < 0)
  938                                 r = 0x7fffffff;
  939                         *retval = r;
  940                         return 0;
  941                 }
  942 
  943         case SVR4_GDESLIM:
  944                 *retval = p->p_rlimit[RLIMIT_NOFILE].rlim_cur;
  945                 if (*retval == -1)
  946                         *retval = 0x7fffffff;
  947                 return 0;
  948 
  949         default:
  950                 return EINVAL;
  951         }
  952 }
  953 
  954 static struct proc *
  955 svr4_pfind(pid)
  956         pid_t pid;
  957 {
  958         struct proc *p;
  959 
  960         /* look in the live processes */
  961         if ((p = pfind(pid)) != NULL)
  962                 return p;
  963 
  964         /* look in the zombies */
  965         for (p = zombproc.lh_first; p != 0; p = p->p_list.le_next)
  966                 if (p->p_pid == pid)
  967                         return p;
  968 
  969         return NULL;
  970 }
  971 
  972 
  973 int
  974 svr4_sys_pgrpsys(p, uap)
  975         struct proc *p;
  976         struct svr4_sys_pgrpsys_args *uap;
  977 {
  978         int *retval = p->p_retval;
  979 
  980         switch (SCARG(uap, cmd)) {
  981         case 1:                 /* setpgrp() */
  982                 /*
  983                  * SVR4 setpgrp() (which takes no arguments) has the
  984                  * semantics that the session ID is also created anew, so
  985                  * in almost every sense, setpgrp() is identical to
  986                  * setsid() for SVR4.  (Under BSD, the difference is that
  987                  * a setpgid(0,0) will not create a new session.)
  988                  */
  989                 setsid(p, NULL);
  990                 /*FALLTHROUGH*/
  991 
  992         case 0:                 /* getpgrp() */
  993                 *retval = p->p_pgrp->pg_id;
  994                 return 0;
  995 
  996         case 2:                 /* getsid(pid) */
  997                 if (SCARG(uap, pid) != 0 &&
  998                     (p = svr4_pfind(SCARG(uap, pid))) == NULL)
  999                         return ESRCH;
 1000                 /*
 1001                  * This has already been initialized to the pid of
 1002                  * the session leader.
 1003                  */
 1004                 *retval = (register_t) p->p_session->s_leader->p_pid;
 1005                 return 0;
 1006 
 1007         case 3:                 /* setsid() */
 1008                 return setsid(p, NULL);
 1009 
 1010         case 4:                 /* getpgid(pid) */
 1011 
 1012                 if (SCARG(uap, pid) != 0 &&
 1013                     (p = svr4_pfind(SCARG(uap, pid))) == NULL)
 1014                         return ESRCH;
 1015 
 1016                 *retval = (int) p->p_pgrp->pg_id;
 1017                 return 0;
 1018 
 1019         case 5:                 /* setpgid(pid, pgid); */
 1020                 {
 1021                         struct setpgid_args sa;
 1022 
 1023                         SCARG(&sa, pid) = SCARG(uap, pid);
 1024                         SCARG(&sa, pgid) = SCARG(uap, pgid);
 1025                         return setpgid(p, &sa);
 1026                 }
 1027 
 1028         default:
 1029                 return EINVAL;
 1030         }
 1031 }
 1032 
 1033 #define syscallarg(x)   union { x datum; register_t pad; }
 1034 
 1035 struct svr4_hrtcntl_args {
 1036         int                     cmd;
 1037         int                     fun;
 1038         int                     clk;
 1039         svr4_hrt_interval_t *   iv;
 1040         svr4_hrt_time_t *       ti;
 1041 };
 1042 
 1043 
 1044 static int
 1045 svr4_hrtcntl(p, uap, retval)
 1046         struct proc *p;
 1047         struct svr4_hrtcntl_args *uap;
 1048         register_t *retval;
 1049 {
 1050         switch (SCARG(uap, fun)) {
 1051         case SVR4_HRT_CNTL_RES:
 1052                 DPRINTF(("htrcntl(RES)\n"));
 1053                 *retval = SVR4_HRT_USEC;
 1054                 return 0;
 1055 
 1056         case SVR4_HRT_CNTL_TOFD:
 1057                 DPRINTF(("htrcntl(TOFD)\n"));
 1058                 {
 1059                         struct timeval tv;
 1060                         svr4_hrt_time_t t;
 1061                         if (SCARG(uap, clk) != SVR4_HRT_CLK_STD) {
 1062                                 DPRINTF(("clk == %d\n", SCARG(uap, clk)));
 1063                                 return EINVAL;
 1064                         }
 1065                         if (SCARG(uap, ti) == NULL) {
 1066                                 DPRINTF(("ti NULL\n"));
 1067                                 return EINVAL;
 1068                         }
 1069                         microtime(&tv);
 1070                         t.h_sec = tv.tv_sec;
 1071                         t.h_rem = tv.tv_usec;
 1072                         t.h_res = SVR4_HRT_USEC;
 1073                         return copyout(&t, SCARG(uap, ti), sizeof(t));
 1074                 }
 1075 
 1076         case SVR4_HRT_CNTL_START:
 1077                 DPRINTF(("htrcntl(START)\n"));
 1078                 return ENOSYS;
 1079 
 1080         case SVR4_HRT_CNTL_GET:
 1081                 DPRINTF(("htrcntl(GET)\n"));
 1082                 return ENOSYS;
 1083         default:
 1084                 DPRINTF(("Bad htrcntl command %d\n", SCARG(uap, fun)));
 1085                 return ENOSYS;
 1086         }
 1087 }
 1088 
 1089 
 1090 int
 1091 svr4_sys_hrtsys(p, uap) 
 1092         struct proc *p;
 1093         struct svr4_sys_hrtsys_args *uap;
 1094 {
 1095         int *retval = p->p_retval;
 1096 
 1097         switch (SCARG(uap, cmd)) {
 1098         case SVR4_HRT_CNTL:
 1099                 return svr4_hrtcntl(p, (struct svr4_hrtcntl_args *) uap,
 1100                                     retval);
 1101 
 1102         case SVR4_HRT_ALRM:
 1103                 DPRINTF(("hrtalarm\n"));
 1104                 return ENOSYS;
 1105 
 1106         case SVR4_HRT_SLP:
 1107                 DPRINTF(("hrtsleep\n"));
 1108                 return ENOSYS;
 1109 
 1110         case SVR4_HRT_CAN:
 1111                 DPRINTF(("hrtcancel\n"));
 1112                 return ENOSYS;
 1113 
 1114         default:
 1115                 DPRINTF(("Bad hrtsys command %d\n", SCARG(uap, cmd)));
 1116                 return EINVAL;
 1117         }
 1118 }
 1119 
 1120 
 1121 static int
 1122 svr4_setinfo(p, st, s)
 1123         struct proc *p;
 1124         int st;
 1125         svr4_siginfo_t *s;
 1126 {
 1127         svr4_siginfo_t i;
 1128         int sig;
 1129 
 1130         memset(&i, 0, sizeof(i));
 1131 
 1132         i.si_signo = SVR4_SIGCHLD;
 1133         i.si_errno = 0; /* XXX? */
 1134 
 1135         if (p) {
 1136                 i.si_pid = p->p_pid;
 1137                 if (p->p_stat == SZOMB) {
 1138                         i.si_stime = p->p_ru->ru_stime.tv_sec;
 1139                         i.si_utime = p->p_ru->ru_utime.tv_sec;
 1140                 }
 1141                 else {
 1142                         i.si_stime = p->p_stats->p_ru.ru_stime.tv_sec;
 1143                         i.si_utime = p->p_stats->p_ru.ru_utime.tv_sec;
 1144                 }
 1145         }
 1146 
 1147         if (WIFEXITED(st)) {
 1148                 i.si_status = WEXITSTATUS(st);
 1149                 i.si_code = SVR4_CLD_EXITED;
 1150         } else if (WIFSTOPPED(st)) {
 1151                 sig = WSTOPSIG(st);
 1152                 if (sig >= 0 && sig < NSIG)
 1153                         i.si_status = SVR4_BSD2SVR4_SIG(sig);
 1154 
 1155                 if (i.si_status == SVR4_SIGCONT)
 1156                         i.si_code = SVR4_CLD_CONTINUED;
 1157                 else
 1158                         i.si_code = SVR4_CLD_STOPPED;
 1159         } else {
 1160                 sig = WTERMSIG(st);
 1161                 if (sig >= 0 && sig < NSIG)
 1162                         i.si_status = SVR4_BSD2SVR4_SIG(sig);
 1163 
 1164                 if (WCOREDUMP(st))
 1165                         i.si_code = SVR4_CLD_DUMPED;
 1166                 else
 1167                         i.si_code = SVR4_CLD_KILLED;
 1168         }
 1169 
 1170         DPRINTF(("siginfo [pid %ld signo %d code %d errno %d status %d]\n",
 1171                  i.si_pid, i.si_signo, i.si_code, i.si_errno, i.si_status));
 1172 
 1173         return copyout(&i, s, sizeof(i));
 1174 }
 1175 
 1176 
 1177 int
 1178 svr4_sys_waitsys(p, uap)
 1179         struct proc *p;
 1180         struct svr4_sys_waitsys_args *uap;
 1181 {
 1182         int nfound;
 1183         int error, *retval = p->p_retval;
 1184         struct proc *q, *t;
 1185 
 1186 
 1187         switch (SCARG(uap, grp)) {
 1188         case SVR4_P_PID:        
 1189                 break;
 1190 
 1191         case SVR4_P_PGID:
 1192                 SCARG(uap, id) = -p->p_pgid;
 1193                 break;
 1194 
 1195         case SVR4_P_ALL:
 1196                 SCARG(uap, id) = WAIT_ANY;
 1197                 break;
 1198 
 1199         default:
 1200                 return EINVAL;
 1201         }
 1202 
 1203         DPRINTF(("waitsys(%d, %d, %p, %x)\n", 
 1204                  SCARG(uap, grp), SCARG(uap, id),
 1205                  SCARG(uap, info), SCARG(uap, options)));
 1206 
 1207 loop:
 1208         nfound = 0;
 1209         for (q = p->p_children.lh_first; q != 0; q = q->p_sibling.le_next) {
 1210                 if (SCARG(uap, id) != WAIT_ANY &&
 1211                     q->p_pid != SCARG(uap, id) &&
 1212                     q->p_pgid != -SCARG(uap, id)) {
 1213                         DPRINTF(("pid %d pgid %d != %d\n", q->p_pid,
 1214                                  q->p_pgid, SCARG(uap, id)));
 1215                         continue;
 1216                 }
 1217                 nfound++;
 1218                 if (q->p_stat == SZOMB && 
 1219                     ((SCARG(uap, options) & (SVR4_WEXITED|SVR4_WTRAPPED)))) {
 1220                         *retval = 0;
 1221                         DPRINTF(("found %d\n", q->p_pid));
 1222                         if ((error = svr4_setinfo(q, q->p_xstat,
 1223                                                   SCARG(uap, info))) != 0)
 1224                                 return error;
 1225 
 1226 
 1227                         if ((SCARG(uap, options) & SVR4_WNOWAIT)) {
 1228                                 DPRINTF(("Don't wait\n"));
 1229                                 return 0;
 1230                         }
 1231 
 1232                         /*
 1233                          * If we got the child via ptrace(2) or procfs, and
 1234                          * the parent is different (meaning the process was
 1235                          * attached, rather than run as a child), then we need
 1236                          * to give it back to the ol dparent, and send the
 1237                          * parent a SIGCHLD.  The rest of the cleanup will be
 1238                          * done when the old parent waits on the child.
 1239                          */
 1240                         if ((q->p_flag & P_TRACED) &&
 1241                             q->p_oppid != q->p_pptr->p_pid) {
 1242                                 t = pfind(q->p_oppid);
 1243                                 proc_reparent(q, t ? t : initproc);
 1244                                 q->p_oppid = 0;
 1245                                 q->p_flag &= ~(P_TRACED | P_WAITED);
 1246                                 wakeup((caddr_t)q->p_pptr);
 1247                                 return 0;
 1248                         }
 1249                         q->p_xstat = 0;
 1250                         ruadd(&p->p_stats->p_cru, q->p_ru);
 1251 
 1252                         FREE(q->p_ru, M_ZOMBIE);
 1253 
 1254                         /*
 1255                          * Finally finished with old proc entry.
 1256                          * Unlink it from its process group and free it.
 1257                          */
 1258                         leavepgrp(q);
 1259 
 1260                         LIST_REMOVE(q, p_list); /* off zombproc */
 1261 
 1262                         LIST_REMOVE(q, p_sibling);
 1263 
 1264                         /*
 1265                          * Decrement the count of procs running with this uid.
 1266                          */
 1267                         (void)chgproccnt(q->p_ucred->cr_uidinfo, -1, 0);
 1268 
 1269                         /*
 1270                          * Free up credentials.
 1271                          */
 1272                         if (--q->p_cred->p_refcnt == 0) {
 1273                                 crfree(q->p_ucred);
 1274                                 FREE(q->p_cred, M_SUBPROC);
 1275                         }
 1276 
 1277                         /*
 1278                          * Release reference to text vnode
 1279                          */
 1280                         if (q->p_textvp)
 1281                                 vrele(q->p_textvp);
 1282 
 1283                         /*
 1284                          * Give machine-dependent layer a chance
 1285                          * to free anything that cpu_exit couldn't
 1286                          * release while still running in process context.
 1287                          */
 1288                         vm_waitproc(q);
 1289                         /* XXX what about process 'q' itself?  zfree? */
 1290 #if defined(__NetBSD__)
 1291                         pool_put(&proc_pool, q);
 1292 #endif
 1293                         nprocs--;
 1294                         return 0;
 1295                 }
 1296                 if (q->p_stat == SSTOP && (q->p_flag & P_WAITED) == 0 &&
 1297                     (q->p_flag & P_TRACED ||
 1298                      (SCARG(uap, options) & (SVR4_WSTOPPED|SVR4_WCONTINUED)))) {
 1299                         DPRINTF(("jobcontrol %d\n", q->p_pid));
 1300                         if (((SCARG(uap, options) & SVR4_WNOWAIT)) == 0)
 1301                                 q->p_flag |= P_WAITED;
 1302                         *retval = 0;
 1303                         return svr4_setinfo(q, W_STOPCODE(q->p_xstat),
 1304                                             SCARG(uap, info));
 1305                 }
 1306         }
 1307 
 1308         if (nfound == 0)
 1309                 return ECHILD;
 1310 
 1311         if (SCARG(uap, options) & SVR4_WNOHANG) {
 1312                 *retval = 0;
 1313                 if ((error = svr4_setinfo(NULL, 0, SCARG(uap, info))) != 0)
 1314                         return error;
 1315                 return 0;
 1316         }
 1317 
 1318         if ((error = tsleep((caddr_t)p, PWAIT | PCATCH, "svr4_wait", 0)) != 0)
 1319                 return error;
 1320         goto loop;
 1321 }
 1322 
 1323 
 1324 static void
 1325 bsd_statfs_to_svr4_statvfs(bfs, sfs)
 1326         const struct statfs *bfs;
 1327         struct svr4_statvfs *sfs;
 1328 {
 1329         sfs->f_bsize = bfs->f_iosize; /* XXX */
 1330         sfs->f_frsize = bfs->f_bsize;
 1331         sfs->f_blocks = bfs->f_blocks;
 1332         sfs->f_bfree = bfs->f_bfree;
 1333         sfs->f_bavail = bfs->f_bavail;
 1334         sfs->f_files = bfs->f_files;
 1335         sfs->f_ffree = bfs->f_ffree;
 1336         sfs->f_favail = bfs->f_ffree;
 1337         sfs->f_fsid = bfs->f_fsid.val[0];
 1338         memcpy(sfs->f_basetype, bfs->f_fstypename, sizeof(sfs->f_basetype));
 1339         sfs->f_flag = 0;
 1340         if (bfs->f_flags & MNT_RDONLY)
 1341                 sfs->f_flag |= SVR4_ST_RDONLY;
 1342         if (bfs->f_flags & MNT_NOSUID)
 1343                 sfs->f_flag |= SVR4_ST_NOSUID;
 1344         sfs->f_namemax = MAXNAMLEN;
 1345         memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
 1346         memset(sfs->f_filler, 0, sizeof(sfs->f_filler));
 1347 }
 1348 
 1349 
 1350 static void
 1351 bsd_statfs_to_svr4_statvfs64(bfs, sfs)
 1352         const struct statfs *bfs;
 1353         struct svr4_statvfs64 *sfs;
 1354 {
 1355         sfs->f_bsize = bfs->f_iosize; /* XXX */
 1356         sfs->f_frsize = bfs->f_bsize;
 1357         sfs->f_blocks = bfs->f_blocks;
 1358         sfs->f_bfree = bfs->f_bfree;
 1359         sfs->f_bavail = bfs->f_bavail;
 1360         sfs->f_files = bfs->f_files;
 1361         sfs->f_ffree = bfs->f_ffree;
 1362         sfs->f_favail = bfs->f_ffree;
 1363         sfs->f_fsid = bfs->f_fsid.val[0];
 1364         memcpy(sfs->f_basetype, bfs->f_fstypename, sizeof(sfs->f_basetype));
 1365         sfs->f_flag = 0;
 1366         if (bfs->f_flags & MNT_RDONLY)
 1367                 sfs->f_flag |= SVR4_ST_RDONLY;
 1368         if (bfs->f_flags & MNT_NOSUID)
 1369                 sfs->f_flag |= SVR4_ST_NOSUID;
 1370         sfs->f_namemax = MAXNAMLEN;
 1371         memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
 1372         memset(sfs->f_filler, 0, sizeof(sfs->f_filler));
 1373 }
 1374 
 1375 
 1376 int
 1377 svr4_sys_statvfs(p, uap)
 1378         struct proc *p;
 1379         struct svr4_sys_statvfs_args *uap;
 1380 {
 1381         struct statfs_args      fs_args;
 1382         caddr_t sg = stackgap_init();
 1383         struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
 1384         struct statfs bfs;
 1385         struct svr4_statvfs sfs;
 1386         int error;
 1387 
 1388         CHECKALTEXIST(p, &sg, SCARG(uap, path));
 1389         SCARG(&fs_args, path) = SCARG(uap, path);
 1390         SCARG(&fs_args, buf) = fs;
 1391 
 1392         if ((error = statfs(p, &fs_args)) != 0)
 1393                 return error;
 1394 
 1395         if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
 1396                 return error;
 1397 
 1398         bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
 1399 
 1400         return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
 1401 }
 1402 
 1403 
 1404 int
 1405 svr4_sys_fstatvfs(p, uap)
 1406         struct proc *p;
 1407         struct svr4_sys_fstatvfs_args *uap;
 1408 {
 1409         struct fstatfs_args     fs_args;
 1410         caddr_t sg = stackgap_init();
 1411         struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
 1412         struct statfs bfs;
 1413         struct svr4_statvfs sfs;
 1414         int error;
 1415 
 1416         SCARG(&fs_args, fd) = SCARG(uap, fd);
 1417         SCARG(&fs_args, buf) = fs;
 1418 
 1419         if ((error = fstatfs(p, &fs_args)) != 0)
 1420                 return error;
 1421 
 1422         if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
 1423                 return error;
 1424 
 1425         bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
 1426 
 1427         return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
 1428 }
 1429 
 1430 
 1431 int
 1432 svr4_sys_statvfs64(p, uap)
 1433         struct proc *p;
 1434         struct svr4_sys_statvfs64_args *uap;
 1435 {
 1436         struct statfs_args      fs_args;
 1437         caddr_t sg = stackgap_init();
 1438         struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
 1439         struct statfs bfs;
 1440         struct svr4_statvfs64 sfs;
 1441         int error;
 1442 
 1443         CHECKALTEXIST(p, &sg, SCARG(uap, path));
 1444         SCARG(&fs_args, path) = SCARG(uap, path);
 1445         SCARG(&fs_args, buf) = fs;
 1446 
 1447         if ((error = statfs(p, &fs_args)) != 0)
 1448                 return error;
 1449 
 1450         if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
 1451                 return error;
 1452 
 1453         bsd_statfs_to_svr4_statvfs64(&bfs, &sfs);
 1454 
 1455         return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
 1456 }
 1457 
 1458 
 1459 int
 1460 svr4_sys_fstatvfs64(p, uap) 
 1461         struct proc *p;
 1462         struct svr4_sys_fstatvfs64_args *uap;
 1463 {
 1464         struct fstatfs_args     fs_args;
 1465         caddr_t sg = stackgap_init();
 1466         struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
 1467         struct statfs bfs;
 1468         struct svr4_statvfs64 sfs;
 1469         int error;
 1470 
 1471         SCARG(&fs_args, fd) = SCARG(uap, fd);
 1472         SCARG(&fs_args, buf) = fs;
 1473 
 1474         if ((error = fstatfs(p, &fs_args)) != 0)
 1475                 return error;
 1476 
 1477         if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
 1478                 return error;
 1479 
 1480         bsd_statfs_to_svr4_statvfs64(&bfs, &sfs);
 1481 
 1482         return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
 1483 }
 1484 
 1485 int
 1486 svr4_sys_alarm(p, uap)
 1487         struct proc *p;
 1488         struct svr4_sys_alarm_args *uap;
 1489 {
 1490         int error;
 1491         struct itimerval *itp, *oitp;
 1492         struct setitimer_args sa;
 1493         caddr_t sg = stackgap_init();
 1494 
 1495         itp = stackgap_alloc(&sg, sizeof(*itp));
 1496         oitp = stackgap_alloc(&sg, sizeof(*oitp));
 1497         timevalclear(&itp->it_interval);
 1498         itp->it_value.tv_sec = SCARG(uap, sec);
 1499         itp->it_value.tv_usec = 0;
 1500 
 1501         SCARG(&sa, which) = ITIMER_REAL;
 1502         SCARG(&sa, itv) = itp;
 1503         SCARG(&sa, oitv) = oitp;
 1504         error = setitimer(p, &sa);
 1505         if (error)
 1506                 return error;
 1507         if (oitp->it_value.tv_usec)
 1508                 oitp->it_value.tv_sec++;
 1509         p->p_retval[0] = oitp->it_value.tv_sec;
 1510         return 0;
 1511 
 1512 }
 1513 
 1514 int
 1515 svr4_sys_gettimeofday(p, uap)
 1516         struct proc *p;
 1517         struct svr4_sys_gettimeofday_args *uap;
 1518 {
 1519         if (SCARG(uap, tp)) {
 1520                 struct timeval atv;
 1521 
 1522                 microtime(&atv);
 1523                 return copyout(&atv, SCARG(uap, tp), sizeof (atv));
 1524         }
 1525 
 1526         return 0;
 1527 }
 1528 
 1529 int
 1530 svr4_sys_facl(p, uap)
 1531         struct proc *p;
 1532         struct svr4_sys_facl_args *uap;
 1533 {
 1534         int *retval;
 1535 
 1536         retval = p->p_retval;
 1537         *retval = 0;
 1538 
 1539         switch (SCARG(uap, cmd)) {
 1540         case SVR4_SYS_SETACL:
 1541                 /* We don't support acls on any filesystem */
 1542                 return ENOSYS;
 1543 
 1544         case SVR4_SYS_GETACL:
 1545                 return copyout(retval, &SCARG(uap, num),
 1546                     sizeof(SCARG(uap, num)));
 1547 
 1548         case SVR4_SYS_GETACLCNT:
 1549                 return 0;
 1550 
 1551         default:
 1552                 return EINVAL;
 1553         }
 1554 }
 1555 
 1556 
 1557 int
 1558 svr4_sys_acl(p, uap)
 1559         struct proc *p;
 1560         struct svr4_sys_acl_args *uap;
 1561 {
 1562         /* XXX: for now the same */
 1563         return svr4_sys_facl(p, (struct svr4_sys_facl_args *)uap);
 1564 }
 1565 
 1566 int
 1567 svr4_sys_auditsys(p, uap)
 1568         struct proc *p;
 1569         struct svr4_sys_auditsys_args *uap;
 1570 {
 1571         /*
 1572          * XXX: Big brother is *not* watching.
 1573          */
 1574         return 0;
 1575 }
 1576 
 1577 int
 1578 svr4_sys_memcntl(p, uap)
 1579         struct proc *p;
 1580         struct svr4_sys_memcntl_args *uap;
 1581 {
 1582         switch (SCARG(uap, cmd)) {
 1583         case SVR4_MC_SYNC:
 1584                 {
 1585                         struct msync_args msa;
 1586 
 1587                         SCARG(&msa, addr) = SCARG(uap, addr);
 1588                         SCARG(&msa, len) = SCARG(uap, len);
 1589                         SCARG(&msa, flags) = (int)SCARG(uap, arg);
 1590 
 1591                         return msync(p, &msa);
 1592                 }
 1593         case SVR4_MC_ADVISE:
 1594                 {
 1595                         struct madvise_args maa;
 1596 
 1597                         SCARG(&maa, addr) = SCARG(uap, addr);
 1598                         SCARG(&maa, len) = SCARG(uap, len);
 1599                         SCARG(&maa, behav) = (int)SCARG(uap, arg);
 1600 
 1601                         return madvise(p, &maa);
 1602                 }
 1603         case SVR4_MC_LOCK:
 1604         case SVR4_MC_UNLOCK:
 1605         case SVR4_MC_LOCKAS:
 1606         case SVR4_MC_UNLOCKAS:
 1607                 return EOPNOTSUPP;
 1608         default:
 1609                 return ENOSYS;
 1610         }
 1611 }
 1612 
 1613 
 1614 int
 1615 svr4_sys_nice(p, uap)
 1616         struct proc *p;
 1617         struct svr4_sys_nice_args *uap;
 1618 {
 1619         struct setpriority_args ap;
 1620         int error;
 1621 
 1622         SCARG(&ap, which) = PRIO_PROCESS;
 1623         SCARG(&ap, who) = 0;
 1624         SCARG(&ap, prio) = SCARG(uap, prio);
 1625 
 1626         if ((error = setpriority(p, &ap)) != 0)
 1627                 return error;
 1628 
 1629         /* the cast is stupid, but the structures are the same */
 1630         if ((error = getpriority(p, (struct getpriority_args *)&ap)) != 0)
 1631                 return error;
 1632 
 1633         return 0;
 1634 }
 1635 
 1636 int
 1637 svr4_sys_resolvepath(p, uap)
 1638         struct proc *p;
 1639         struct svr4_sys_resolvepath_args *uap;
 1640 {
 1641         struct nameidata nd;
 1642         int error, *retval = p->p_retval;
 1643 
 1644         NDINIT(&nd, LOOKUP, NOFOLLOW | SAVENAME, UIO_USERSPACE,
 1645             SCARG(uap, path), p);
 1646 
 1647         if ((error = namei(&nd)) != 0)
 1648                 return error;
 1649 
 1650         if ((error = copyout(nd.ni_cnd.cn_pnbuf, SCARG(uap, buf),
 1651             SCARG(uap, bufsiz))) != 0)
 1652                 goto bad;
 1653 
 1654         *retval = strlen(nd.ni_cnd.cn_pnbuf) < SCARG(uap, bufsiz) ? 
 1655           strlen(nd.ni_cnd.cn_pnbuf) + 1 : SCARG(uap, bufsiz);
 1656 bad:
 1657         NDFREE(&nd, NDF_ONLY_PNBUF);
 1658         vput(nd.ni_vp);
 1659         return error;
 1660 }
Cache object: 18304833b938826054373c32af8e6904
[ 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/svr4/svr4_misc.c

FreeBSD/Linux Kernel Cross Reference
sys/svr4/svr4_misc.c
