Normalize on PATH_MAX instead of MAXPATHLEN throughout.

With the pathmax gnulib module in place, we can use PATH_MAX
consistently throughout, instead of the current mixbag of PATH_MAX and
MAXPATHLEN uses.  It's no longer necessary to include sys/param.h
(supposedly, I can't check all ports touched here) for MAXPATHLEN.

Don't remove sys/param.h from GDB's configure.ac, as later tests in
the file use HAVE_SYS_PARAM_H checks.

Tested on x86_64 Fedora 17.

Also cross-built for --host=i686-w64-mingw32, and --host=i586-pc-msdosdjgpp.

gdb/
2013-07-01  Pedro Alves  <palves@redhat.com>

	* defs.h: Include "pathmax.h".
	* utils.c: Don't include sys/param.h.
	(gdb_realpath): Remove code that checks for MAXPATHLEN.
	* solib-ia64-hpux.c (ia64_hpux_handle_load_event): Use PATH_MAX
	instead of MAXPATHLEN.
	* solib-sunos.c: Don't include sys/param.h.
	* xcoffread.c: Don't include sys/param.h.
	* bsd-kvm.c: Don't include sys/param.h.
	* darwin-nat.c: Don't include sys/param.h.
	(darwin_pid_to_exec_file): Use PATH_MAX instead of MAXPATHLEN.
	* darwin-nat-info.c: Don't include sys/param.h.
	* fbsd-nat.c (fbsd_pid_to_exec_file): Use PATH_MAX instead of
	MAXPATHLEN.
	* i386obsd-nat.c: Don't include sys/param.h.
	* inf-child.c: Don't include sys/param.h.
	(inf_child_fileio_readlink): Use PATH_MAX instead of MAXPATHLEN.
	* linux-fork.c: Don't include sys/param.h.
	(fork_save_infrun_state): Use PATH_MAX instead of MAXPATHLEN.
	* linux-nat.c: Don't include sys/param.h.
	(linux_child_pid_to_exec_file, linux_proc_pending_signals)
	(linux_proc_pending_signals): Use PATH_MAX instead of MAXPATHLEN.
	* m68klinux-nat.c: Don't include sys/param.h.
	* nbsd-nat.c: Don't include sys/param.h.
	(nbsd_pid_to_exec_file): Use PATH_MAX instead of MAXPATHLEN.
	* ppc-linux-nat.c: Don't include sys/param.h.
	* rs6000-nat.c: Don't include sys/param.h.
	* spu-linux-nat.c. Don't include sys/param.h.
	* windows-nat.c: Don't include sys/param.h.
	* xtensa-linux-nat.c: Don't include sys/param.h.
	* config/i386/nm-fbsd.h: Don't include sys/param.h.

gdb/gdbserver/
2013-07-01  Pedro Alves  <palves@redhat.com>

	* server.h: Include "pathmax.h".
	* linux-low.c: Don't include sys/param.h.
	(linux_pid_exe_is_elf_64_file): Use PATH_MAX instead of
	MAXPATHLEN.
	* win32-low.c: Don't include sys/param.h.
	(win32_create_inferior): Use PATH_MAX instead of MAXPATHLEN.

1 files changed, 6 insertions, 7 deletions

diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 6ba71ba..45a6e5f 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -39,7 +39,6 @@
 #include "inf-child.h"
 #include "inf-ptrace.h"
 #include "auxv.h"
-#include <sys/param.h>		/* for MAXPATHLEN */
 #include <sys/procfs.h>		/* for elf_gregset etc.  */
 #include "elf-bfd.h"		/* for elfcore_write_* */
 #include "gregset.h"		/* for gregset */
@@ -4306,14 +4305,14 @@ linux_child_pid_to_exec_file (int pid)
 {
   char *name1, *name2;
 
-  name1 = xmalloc (MAXPATHLEN);
-  name2 = xmalloc (MAXPATHLEN);
+  name1 = xmalloc (PATH_MAX);
+  name2 = xmalloc (PATH_MAX);
   make_cleanup (xfree, name1);
   make_cleanup (xfree, name2);
-  memset (name2, 0, MAXPATHLEN);
+  memset (name2, 0, PATH_MAX);
 
   sprintf (name1, "/proc/%d/exe", pid);
-  if (readlink (name1, name2, MAXPATHLEN - 1) > 0)
+  if (readlink (name1, name2, PATH_MAX - 1) > 0)
     return name2;
   else
     return name1;
@@ -4562,7 +4561,7 @@ linux_proc_pending_signals (int pid, sigset_t *pending,
 			    sigset_t *blocked, sigset_t *ignored)
 {
   FILE *procfile;
-  char buffer[MAXPATHLEN], fname[MAXPATHLEN];
+  char buffer[PATH_MAX], fname[PATH_MAX];
   struct cleanup *cleanup;
 
   sigemptyset (pending);
@@ -4574,7 +4573,7 @@ linux_proc_pending_signals (int pid, sigset_t *pending,
     error (_("Could not open %s"), fname);
   cleanup = make_cleanup_fclose (procfile);
 
-  while (fgets (buffer, MAXPATHLEN, procfile) != NULL)
+  while (fgets (buffer, PATH_MAX, procfile) != NULL)
     {
       /* Normal queued signals are on the SigPnd line in the status
 	 file.  However, 2.6 kernels also have a "shared" pending