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mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-15 04:31:49 +08:00
binutils-gdb/gdbsupport/scoped_mmap.cc
Simon Marchi 18d2988e5d gdb, gdbserver, gdbsupport: remove includes of early headers
Now that defs.h, server.h and common-defs.h are included via the
`-include` option, it is no longer necessary for source files to include
them.  Remove all the inclusions of these files I could find.  Update
the generation scripts where relevant.

Change-Id: Ia026cff269c1b7ae7386dd3619bc9bb6a5332837
Approved-By: Pedro Alves <pedro@palves.net>
2024-03-26 21:13:22 -04:00

49 lines
1.4 KiB
C++

/* scoped_mmap, automatically unmap files
Copyright (C) 2018-2024 Free Software Foundation, Inc.
This file is part of GDB.
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/>. */
#include "scoped_mmap.h"
#include "scoped_fd.h"
#include "gdbsupport/filestuff.h"
#ifdef HAVE_SYS_MMAN_H
scoped_mmap
mmap_file (const char *filename)
{
scoped_fd fd = gdb_open_cloexec (filename, O_RDONLY, 0);
if (fd.get () < 0)
perror_with_name (("open"));
off_t size = lseek (fd.get (), 0, SEEK_END);
if (size < 0)
perror_with_name (("lseek"));
/* We can't map an empty file. */
if (size == 0)
error (_("file to mmap is empty"));
scoped_mmap mmapped_file (nullptr, size, PROT_READ, MAP_PRIVATE, fd.get (), 0);
if (mmapped_file.get () == MAP_FAILED)
perror_with_name (("mmap"));
return mmapped_file;
}
#endif /* HAVE_SYS_MMAN_H */