Dmitry V. Levin
a8fce09e34
We used to declare and define all printers marked with MPERS_PRINTER_DECL, including ifdef'ed ones. That approach left us no way to conditionally compile mpersified printers, which was not a problem until btrfs ioctls appeared on the horizon. With this change, those mpersified printers that are not going to be compiled are also won't be declared and won't be added to struct_printers. This is implemented by filtering all source files containing MPERS_PRINTER_DECL markers through CPP. As a nice side effect, this also lifts an ugly requirement of writing all MPERS_PRINTER_DECL declarations in a single line. * README-mpers: Update description of MPERS_PRINTER_DECL syntax. * defs.h [IN_MPERS_BOOTSTRAP] (MPERS_PRINTER_DECL): Turn into a recursive variadic macro. [!IN_MPERS_BOOTSTRAP] (MPERS_PRINTER_DECL): Turn into a variadic macro. All callers changed. * Makefile.am (mpers_preproc_files, mpers_printer_decl_pattern): New variables. (CLEANFILES): Add $(mpers_preproc_files). (%.c.mpers.i): New rule. (printers.h, %_printer_decls.h, %_printer_defs.h): Use mpers_preproc_files instead of srcdir_mpers_source_files, use mpers_printer_decl_pattern. * .gitignore: Add /*.mpers.i.
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*
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* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include DEF_MPERS_TYPE(struct_statfs)
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#include DEF_MPERS_TYPE(struct_statfs64)
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#include <linux/types.h>
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#include <asm/statfs.h>
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typedef struct statfs struct_statfs;
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typedef struct statfs64 struct_statfs64;
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#include MPERS_DEFS
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#include "statfs.h"
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#define ASSIGN_NUMBER(dst, src) \
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if (sizeof(src) == sizeof(int)) \
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dst = (unsigned int) (src); \
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else if (sizeof(src) == sizeof(long)) \
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dst = (unsigned long) (src); \
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else \
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dst = (unsigned long long) (src)
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MPERS_PRINTER_DECL(bool, fetch_struct_statfs,
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struct tcb *tcp, const long addr, struct strace_statfs *p)
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{
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struct_statfs b;
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if (umove_or_printaddr(tcp, addr, &b))
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return false;
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ASSIGN_NUMBER(p->f_type, b.f_type);
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ASSIGN_NUMBER(p->f_bsize, b.f_bsize);
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ASSIGN_NUMBER(p->f_blocks, b.f_blocks);
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ASSIGN_NUMBER(p->f_bfree, b.f_bfree);
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ASSIGN_NUMBER(p->f_bavail, b.f_bavail);
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ASSIGN_NUMBER(p->f_files, b.f_files);
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ASSIGN_NUMBER(p->f_ffree, b.f_ffree);
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#if defined HAVE_STRUCT_STATFS_F_FSID_VAL
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ASSIGN_NUMBER(p->f_fsid[0], b.f_fsid.val[0]);
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ASSIGN_NUMBER(p->f_fsid[1], b.f_fsid.val[1]);
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#elif defined HAVE_STRUCT_STATFS_F_FSID___VAL
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ASSIGN_NUMBER(p->f_fsid[0], b.f_fsid.__val[0]);
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ASSIGN_NUMBER(p->f_fsid[1], b.f_fsid.__val[1]);
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#endif
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ASSIGN_NUMBER(p->f_namelen, b.f_namelen);
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#ifdef HAVE_STRUCT_STATFS_F_FRSIZE
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ASSIGN_NUMBER(p->f_frsize, b.f_frsize);
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#endif
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#ifdef HAVE_STRUCT_STATFS_F_FLAGS
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ASSIGN_NUMBER(p->f_flags, b.f_flags);
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#endif
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return true;
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}
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#if defined ARM || (defined AARCH64 && defined IN_MPERS)
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/* See arch/arm/kernel/sys_oabi-compat.c for details. */
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# define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct_statfs64) + 4)
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#endif
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MPERS_PRINTER_DECL(bool, fetch_struct_statfs64,
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struct tcb *tcp, const long addr, const unsigned long size,
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struct strace_statfs *p)
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{
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struct_statfs64 b;
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if (sizeof(b) != size
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#ifdef COMPAT_STATFS64_PADDED_SIZE
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&& sizeof(b) != COMPAT_STATFS64_PADDED_SIZE
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#endif
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) {
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printaddr(addr);
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return false;
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}
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if (umove_or_printaddr(tcp, addr, &b))
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return false;
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ASSIGN_NUMBER(p->f_type, b.f_type);
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ASSIGN_NUMBER(p->f_bsize, b.f_bsize);
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ASSIGN_NUMBER(p->f_blocks, b.f_blocks);
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ASSIGN_NUMBER(p->f_bfree, b.f_bfree);
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ASSIGN_NUMBER(p->f_bavail, b.f_bavail);
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ASSIGN_NUMBER(p->f_files, b.f_files);
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ASSIGN_NUMBER(p->f_ffree, b.f_ffree);
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#if defined HAVE_STRUCT_STATFS64_F_FSID_VAL
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ASSIGN_NUMBER(p->f_fsid[0], b.f_fsid.val[0]);
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ASSIGN_NUMBER(p->f_fsid[1], b.f_fsid.val[1]);
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#elif defined HAVE_STRUCT_STATFS64_F_FSID___VAL
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ASSIGN_NUMBER(p->f_fsid[0], b.f_fsid.__val[0]);
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ASSIGN_NUMBER(p->f_fsid[1], b.f_fsid.__val[1]);
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#endif
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ASSIGN_NUMBER(p->f_namelen, b.f_namelen);
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#ifdef HAVE_STRUCT_STATFS64_F_FRSIZE
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ASSIGN_NUMBER(p->f_frsize, b.f_frsize);
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#endif
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#ifdef HAVE_STRUCT_STATFS64_F_FLAGS
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ASSIGN_NUMBER(p->f_flags, b.f_flags);
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#endif
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return true;
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}
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