Move remote_fileio_to_fio_stat to gdb/common

This commit moves remote_fileio_to_fio_stat and its supporting
functions into new files common/common-remote-fileio.[ch].

gdb/ChangeLog:

	* common/common-remote-fileio.h: New file.
	* common/common-remote-fileio.c: Likewise.
	* Makefile.in (SFILES): Add common/common-remote-fileio.c.
	(HFILES_NO_SRCDIR): Add common/common-remote-fileio.h.
	(COMMON_OBS): Add common-remote-fileio.o.
	(common-remote-fileio.o): New rule.
	* remote-fileio.h (common-remote-fileio.h): New include.
	* remote-fileio.c (gdb/fileio.h): Do not include.
	(remote_fileio_to_be): Moved to common-remote-fileio.h.
	(remote_fileio_to_fio_uint): Likewise.
	(remote_fileio_to_fio_time): Likewise.
	(remote_fileio_mode_to_target): Moved to common-remote-fileio.c.
	(remote_fileio_to_fio_mode): Likewise.
	(remote_fileio_to_fio_ulong): Likewise.
	(remote_fileio_to_fio_stat): Likewise.

gdb/gdbserver/ChangeLog:

	* configure.ac (AC_CHECK_MEMBERS): Add checks for
	struct stat.st_blocks and struct stat.st_blksize.
	* configure: Regenerate.
	* config.in: Likewise.
	* Makefile.in (SFILES): Add common/common-remote-fileio.c.
	(OBS): Add common-remote-fileio.o.
	(common-remote-fileio.o): New rule.

2 files changed, 180 insertions, 0 deletions

diff --git a/gdb/common/common-remote-fileio.c b/gdb/common/common-remote-fileio.c
new file mode 100644
index 0000000..f78b3f7
--- /dev/null
+++ b/gdb/common/common-remote-fileio.c
@@ -0,0 +1,119 @@
+/* Remote File-I/O communications
+
+   Copyright (C) 2003-2015 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 "common-defs.h"
+#include "common-remote-fileio.h"
+#include <sys/stat.h>
+
+/* Convert a host-format mode_t into a bitmask of File-I/O flags.  */
+
+static LONGEST
+remote_fileio_mode_to_target (mode_t mode)
+{
+  mode_t tmode = 0;
+
+  if (S_ISREG (mode))
+    tmode |= FILEIO_S_IFREG;
+  if (S_ISDIR (mode))
+    tmode |= FILEIO_S_IFDIR;
+  if (S_ISCHR (mode))
+    tmode |= FILEIO_S_IFCHR;
+  if (mode & S_IRUSR)
+    tmode |= FILEIO_S_IRUSR;
+  if (mode & S_IWUSR)
+    tmode |= FILEIO_S_IWUSR;
+  if (mode & S_IXUSR)
+    tmode |= FILEIO_S_IXUSR;
+#ifdef S_IRGRP
+  if (mode & S_IRGRP)
+    tmode |= FILEIO_S_IRGRP;
+#endif
+#ifdef S_IWRGRP
+  if (mode & S_IWGRP)
+    tmode |= FILEIO_S_IWGRP;
+#endif
+#ifdef S_IXGRP
+  if (mode & S_IXGRP)
+    tmode |= FILEIO_S_IXGRP;
+#endif
+  if (mode & S_IROTH)
+    tmode |= FILEIO_S_IROTH;
+#ifdef S_IWOTH
+  if (mode & S_IWOTH)
+    tmode |= FILEIO_S_IWOTH;
+#endif
+#ifdef S_IXOTH
+  if (mode & S_IXOTH)
+    tmode |= FILEIO_S_IXOTH;
+#endif
+  return tmode;
+}
+
+/* Pack a host-format mode_t into an fio_mode_t.  */
+
+static void
+remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum)
+{
+  remote_fileio_to_be (remote_fileio_mode_to_target (num),
+		       (char *) fnum, 4);
+}
+
+/* Pack a host-format integer into an fio_ulong_t.  */
+
+static void
+remote_fileio_to_fio_ulong (LONGEST num, fio_ulong_t fnum)
+{
+  remote_fileio_to_be (num, (char *) fnum, 8);
+}
+
+/* See common-remote-fileio.h.  */
+
+void
+remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst)
+{
+  LONGEST blksize;
+
+  remote_fileio_to_fio_uint ((long) st->st_dev, fst->fst_dev);
+  remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino);
+  remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode);
+  remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink);
+  remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid);
+  remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid);
+  remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev);
+  remote_fileio_to_fio_ulong ((LONGEST) st->st_size, fst->fst_size);
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+  blksize = st->st_blksize;
+#else
+  blksize = 512;
+#endif
+  remote_fileio_to_fio_ulong (blksize, fst->fst_blksize);
+#if HAVE_STRUCT_STAT_ST_BLOCKS
+  remote_fileio_to_fio_ulong ((LONGEST) st->st_blocks, fst->fst_blocks);
+#else
+  /* FIXME: This is correct for DJGPP, but other systems that don't
+     have st_blocks, if any, might prefer 512 instead of st_blksize.
+     (eliz, 30-12-2003)  */
+  remote_fileio_to_fio_ulong (((LONGEST) st->st_size + blksize - 1)
+			      / blksize,
+			      fst->fst_blocks);
+#endif
+  remote_fileio_to_fio_time (st->st_atime, fst->fst_atime);
+  remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime);
+  remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime);
+}
diff --git a/gdb/common/common-remote-fileio.h b/gdb/common/common-remote-fileio.h
new file mode 100644
index 0000000..b838186
--- /dev/null
+++ b/gdb/common/common-remote-fileio.h
@@ -0,0 +1,61 @@
+/* Remote File-I/O communications
+
+   Copyright (C) 2003-2015 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/>.  */
+
+#ifndef COMMON_REMOTE_FILEIO_H
+#define COMMON_REMOTE_FILEIO_H
+
+#include "gdb/fileio.h"
+
+struct stat;
+
+/* Pack a host-format integer into a byte buffer in big-endian format
+   ready for transmission over the remote protocol.  BYTES specifies
+   the size of the integer to pack in bytes.  */
+
+static inline void
+remote_fileio_to_be (LONGEST num, char *buf, int bytes)
+{
+  int i;
+
+  for (i = 0; i < bytes; ++i)
+    buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
+}
+
+/* Pack a host-format integer into an fio_uint_t.  */
+
+static inline void
+remote_fileio_to_fio_uint (long num, fio_uint_t fnum)
+{
+  remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4);
+}
+
+/* Pack a host-format time_t into an fio_time_t.  */
+
+static inline void
+remote_fileio_to_fio_time (time_t num, fio_time_t fnum)
+{
+  remote_fileio_to_be ((LONGEST) num, (char *) fnum, 4);
+}
+
+/* Pack a host-format struct stat into a struct fio_stat.  */
+
+extern void remote_fileio_to_fio_stat (struct stat *st,
+				       struct fio_stat *fst);
+
+#endif /* COMMON_REMOTE_FILEIO_H */