Don't assume File-I/O mode bits match the host's format

inf_child_fileio_open and its gdbserver equivalent both assume that
the mode_t bits defined in gdb/fileio.h are the same as those used
by the open system call, but there is no mechanism to ensure this is
the case.  This commit adds a conversion function to handle systems
where the File-I/O definitions do not align with the host's.

gdb/ChangeLog:

	* common/fileio.h (fileio_to_host_mode): New declaration.
	* common/fileio.c (fileio_to_host_mode): New Function.
	* inf-child.c (inf_child_fileio_open): Process mode argument
	with fileio_to_host_mode.

gdb/gdbserver/ChangeLog:

	* hostio.c (handle_open): Process mode argument with
	fileio_to_host_mode.

1 files changed, 5 insertions, 3 deletions

diff --git a/gdb/gdbserver/hostio.c b/gdb/gdbserver/hostio.c
index 9e858d9..811f958 100644
--- a/gdb/gdbserver/hostio.c
+++ b/gdb/gdbserver/hostio.c
@@ -248,7 +248,8 @@ handle_open (char *own_buf)
 {
   char filename[HOSTIO_PATH_MAX];
   char *p;
-  int fileio_flags, mode, flags, fd;
+  int fileio_flags, fileio_mode, flags, fd;
+  mode_t mode;
   struct fd_list *new_fd;
 
   p = own_buf + strlen ("vFile:open:");
@@ -257,9 +258,10 @@ handle_open (char *own_buf)
       || require_comma (&p)
       || require_int (&p, &fileio_flags)
       || require_comma (&p)
-      || require_int (&p, &mode)
+      || require_int (&p, &fileio_mode)
       || require_end (p)
-      || fileio_to_host_openflags (fileio_flags, &flags))
+      || fileio_to_host_openflags (fileio_flags, &flags)
+      || fileio_to_host_mode (fileio_mode, &mode))
     {
       hostio_packet_error (own_buf);
       return;