kc3-lang/gnulib/lib/fstat.c

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• Hash : cd76a061
  Author :
  Date : 2011-09-25T13:42:08
  

  New module 'fstat'.
  
  * lib/sys_stat.in.h (fstat): Declare only if GNULIB_FSTAT is set.
  * lib/fstat.c: New file, based on a piece of lib/fchdir.c.
  * lib/fchdir.c (rpl_fstat): Remove function.
  * m4/fstat.m4: New file.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): Don't set REPLACE_FSTAT.
  * m4/sys_stat_h.m4 (gl_HEADER_SYS_STAT_H): Test whether fstat is
  declared.
  (gl_SYS_STAT_H_DEFAULTS): Initialize GNULIB_FSTAT.
  * modules/sys_stat (Makefile.am): Substitute GNULIB_FSTAT.
  * modules/fstat: New file.
  * modules/sys_stat-tests (Depends-on): Remove fstat-tests.
  * tests/test-sys_stat-c++.cc (fstat): Check only if GNULIB_TEST_FSTAT
  is set.
  * doc/posix-functions/fstat.texi: Mention the new module and the
  problem on MSVC.
  * NEWS: Mention the change.
  * modules/acl (Depends-on): Add fstat.
  * modules/chdir-safer (Depends-on): Likewise.
  * modules/chown (Depends-on): Likewise.
  * modules/copy-file (Depends-on): Likewise.
  * modules/fchdir (Depends-on): Likewise.
  * modules/fdopendir (Depends-on): Likewise.
  * modules/fopen (Depends-on): Likewise.
  * modules/fts (Depends-on): Likewise.
  * modules/getcwd (Depends-on): Likewise.
  * modules/isapipe (Depends-on): Likewise.
  * modules/linkat (Depends-on): Likewise.
  * modules/lseek (Depends-on): Likewise.
  * modules/mkdir-p (Depends-on): Likewise.
  * modules/open (Depends-on): Likewise.
  * modules/openat (Depends-on): Likewise.
  * modules/read-file (Depends-on): Likewise.
  * modules/renameat (Depends-on): Likewise.
  * modules/utimens (Depends-on): Likewise.
  

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• lib/fstat.c

• /* fstat() replacement.
     Copyright (C) 2011 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  /* If the user's config.h happens to include <sys/stat.h>, let it include only
     the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to
     rpl_fstat.  */
  #define __need_system_sys_stat_h
  #include <config.h>
  
  /* Get the original definition of fstat.  It might be defined as a macro.  */
  #include <sys/types.h>
  #include <sys/stat.h>
  #undef __need_system_sys_stat_h
  
  static inline int
  orig_fstat (int fd, struct stat *buf)
  {
    return fstat (fd, buf);
  }
  
  /* Specification.  */
  /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
     eliminates this include because of the preliminary #include <sys/stat.h>
     above.  */
  #include "sys/stat.h"
  
  #include <errno.h>
  #include <unistd.h>
  
  #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
  # include "msvc-inval.h"
  #endif
  
  #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
  static inline int
  fstat_nothrow (int fd, struct stat *buf)
  {
    int result;
  
    TRY_MSVC_INVAL
      {
        result = orig_fstat (fd, buf);
      }
    CATCH_MSVC_INVAL
      {
        result = -1;
        errno = EBADF;
      }
    DONE_MSVC_INVAL;
  
    return result;
  }
  #else
  # define fstat_nothrow orig_fstat
  #endif
  
  int
  rpl_fstat (int fd, struct stat *buf)
  {
  #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY
    /* Handle the case when rpl_open() used a dummy file descriptor to work
       around an open() that can't normally visit directories.  */
    const char *name = _gl_directory_name (fd);
    if (name != NULL)
      return stat (name, buf);
  #endif
  
    return fstat_nothrow (fd, buf);
  }
  

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