+++ /dev/null
-/*
- * This Cplant(TM) source code is the property of Sandia National
- * Laboratories.
- *
- * This Cplant(TM) source code is copyrighted by Sandia National
- * Laboratories.
- *
- * The redistribution of this Cplant(TM) source code is subject to the
- * terms of the GNU Lesser General Public License
- * (see cit/LGPL or http://www.gnu.org/licenses/lgpl.html)
- *
- * Cplant(TM) Copyright 1998-2005 Sandia Corporation.
- * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
- * license for use of this work by or on behalf of the US Government.
- * Export of this program may require a license from the United States
- * Government.
- */
-
-/*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Questions or comments about this library should be sent to:
- *
- * Lee Ward
- * Sandia National Laboratories, New Mexico
- * P.O. Box 5800
- * Albuquerque, NM 87185-1110
- *
- * lee@sandia.gov
- */
-
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <assert.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/queue.h>
-
-#include "sysio.h"
-#include "inode.h"
-#include "file.h"
-
-#include "sysio-symbols.h"
-
-#ifdef HAVE_LUSTRE_HACK
-#include <sys/syscall.h>
-#include <native.h>
-#endif
-
-#ifdef HAVE_LUSTRE_HACK
-static int
-_sysio_lustre_fcntl(int fd, int cmd, va_list ap, int *rtn)
-{
- long arg = va_arg(ap, long);
-
- *rtn = syscall(SYSIO_SYS_fcntl, fd, cmd, arg);
- return *rtn == -1 ? -errno : 0;
-}
-#endif
-
-static int
-_sysio_fcntl_raw_call(struct inode *ino, int *r, int cmd, ...)
-{
- va_list ap;
- int err;
-
- va_start(ap, cmd);
- err = ino->i_ops.inop_fcntl(ino, cmd, ap, r);
- va_end(ap);
- return err;
-}
-
-/*
- * Convert offsets to absolute, when appropriate, and call appropriate driver
- * to complete the fcntl lock function. If successful, convert
- * returned values back to appropriate form.
- */
-static int
-_sysio_fcntl_lock(struct file *fil, int cmd, struct _SYSIO_FLOCK *fl)
-{
- struct _SYSIO_FLOCK flock;
- _SYSIO_OFF_T pos;
- int err;
- int rtn;
-
- /*
- * The drivers will not have a clue as to the
- * current position of the file pointer. We need to
- * convert relative whence values to absolute
- * file adresses for them, then.
- */
- flock = *fl;
- switch (flock.l_whence) {
- case SEEK_SET:
- /*
- * At least parameter check this one, too.
- */
- case SEEK_CUR:
- case SEEK_END:
- pos =
- _sysio_lseek_prepare(fil,
- flock.l_start,
- flock.l_whence,
- _SEEK_MAX(fil));
- if (pos < 0)
- return (int )pos;
- flock.l_start = pos;
- flock.l_whence = SEEK_SET;
- break;
- default:
- return -EINVAL;
- }
- err =
- _sysio_fcntl_raw_call(fil->f_ino, &rtn, cmd, &flock);
- if (err)
- return err;
- /*
- * Ugh, convert back to relative form.
- */
- switch (fl->l_whence) {
- case SEEK_SET:
- break;
- case SEEK_CUR:
- fl->l_start = flock.l_start;
- fl->l_start -= fil->f_pos;
- break;
- case SEEK_END:
- fl->l_start = flock.l_start;
- fl->l_start -=
- fil->f_ino->i_stbuf.st_size;
- break;
- default:
- abort();
- }
- /*
- * Return success.
- */
- return 0;
-}
-
-static int
-_sysio_vfcntl(int fd, int cmd, va_list ap)
-{
- int err;
- int rtn;
- struct file *fil;
- SYSIO_INTERFACE_DISPLAY_BLOCK;
-
- SYSIO_INTERFACE_ENTER;
- err = 0;
- fil = _sysio_fd_find(fd);
- if (!fil) {
-#ifdef HAVE_LUSTRE_HACK
- err = _sysio_lustre_fcntl(fd, cmd, ap, &rtn);
- goto out;
-#else
- rtn = -1;
- err = -EBADF;
- goto out;
-#endif
- }
-
- switch (cmd) {
-
- case F_DUPFD:
- {
- long newfd;
-
- newfd = va_arg(ap, long);
- if (newfd != (int )newfd || newfd < 0) {
- rtn = -1;
- err = -EBADF;
- goto out;
- }
- rtn = _sysio_fd_dup(fd, (int )newfd, 0);
- if (rtn < 0) {
- err = rtn;
- rtn = -1;
- }
- }
- break;
-#if !(defined(_LARGEFILE64_SOURCE) || F_GETLK64 == F_GETLK)
- case F_GETLK:
- case F_SETLK:
- case F_SETLKW:
- {
- struct intnl_stat buf;
- struct flock *fl;
-#ifdef _LARGEFILE64_SOURCE
- struct _SYSIO_FLOCK flock64;
-#endif
-
- /*
- * Refresh the cached attributes.
- */
- err =
- fil->f_ino->i_ops.inop_getattr(NULL,
- fil->f_ino,
- &buf);
- if (err) {
- rtn = -1;
- break;
- }
- /*
- * Copy args to a temp and normalize.
- */
- fl = va_arg(ap, struct flock *);
-#ifdef _LARGEFILE64_SOURCE
- flock64.l_type = fl->l_type;
- flock64.l_whence = fl->l_whence;
- flock64.l_start = fl->l_start;
- flock64.l_len = fl->l_len;
- flock64.l_pid = fl->l_pid;
- err = _sysio_fcntl_lock(fil, cmd, &flock64);
-#else
- err = _sysio_fcntl_lock(fil, cmd, fl);
-#endif
- if (err < 0) {
- rtn = -1;
- break;
- }
-#ifdef _LARGEFILE64_SOURCE
- /*
- * Copy back. Note that the fcntl_lock call
- * should have ensured that no overflow was possible.
- */
- fl->l_type = flock64.l_type;
- fl->l_whence = flock64.l_whence;
- fl->l_start = flock64.l_start;
- assert(fl->l_start == flock64.l_start);
- fl->l_len = flock64.l_len;
- assert(fl->l_len == flock64.l_len);
- fl->l_pid = flock64.l_pid;
-#endif
- rtn = 0;
- }
- break;
-#endif /* !(_LARGEFILE64_SOURCE || F_GETLK64 == F_GETLK) */
-#ifdef _LARGEFILE64_SOURCE
- case F_GETLK64:
- case F_SETLK64:
- case F_SETLKW64:
- {
- struct flock64 *fl64;
-
- fl64 = va_arg(ap, struct flock64 *);
- err = _sysio_fcntl_lock(fil, cmd, fl64);
- rtn = err ? -1 : 0;
- }
- break;
-#endif
- default:
- err = fil->f_ino->i_ops.inop_fcntl(fil->f_ino, cmd, ap, &rtn);
- break;
- }
-
-out:
- SYSIO_INTERFACE_RETURN(rtn, err);
-}
-
-int
-SYSIO_INTERFACE_NAME(fcntl)(int fd, int cmd, ...)
-{
- va_list ap;
- int err;
-
- va_start(ap, cmd);
- err = _sysio_vfcntl(fd, cmd, ap);
- va_end(ap);
- return err;
-}
-
-sysio_sym_weak_alias(SYSIO_INTERFACE_NAME(fcntl),
- SYSIO_INTERFACE_NAME(fcntl64))
-
-#ifdef __GLIBC__
-#undef __fcntl
-sysio_sym_weak_alias(SYSIO_INTERFACE_NAME(fcntl),
- PREPEND(__, SYSIO_INTERFACE_NAME(fcntl)))
-#endif
-
-#ifdef BSD
-#undef _fcntl
-sysio_sym_weak_alias(SYSIO_INTERFACE_NAME(fcntl),
- PREPEND(_, SYSIO_INTERFACE_NAME(fcntl)))
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff