update from main archive 970118cvs/libc-970119

Sun Jan 19 04:38:20 1997  Ulrich Drepper  <drepper@cygnus.com>

	* config.make.in (have-ksh, KSH): New variables.  Will be filled
	in by configure.
	* configure.in: Add test for ksh like shell (prefer bash).
	* time/Makefile (tests): Depend on install-test-data.
	(distribute): Add simplebackw.
	(generated-dirs): New variable.
	[$(have-ksh)==yes] (install-others): Add iso3166.tab and zone.tab.
	(install-bin): Add tzselect.
	(install-test-data): Install the zoneinfo files which are needed
	for the test case in the build directory.
	(test-tz-ENV): New variable.  Call test-tz program using data in
	build directory.
	* time/simpleback: New file.
	* time/test-tz.c: Pretty print.
	* time/tzfile.c: Use value of environment variable TZDIR as directory
	to look for zone info files.
	don't let search for DST data destroy already found values.
	* time/tzselect.ksh: Use @KSH@ and @TZDIR@ to be substituted when
	installing.
	* time/tzset.c (__tzset_internal): Avoid freeing string twice.
	Set DST zone name to normal zone name if no information is provided.

	* time/mktime.c (mktime): Call __tzset_internal to use current
	value of TZ.

	* Makerules (common-clean): Remove $(generated-dirs) inclusing content.

	* glibcbug.in: Fix several bugs.  Reported by several people.

	* elf/Makefile: Correct dependecies for $(objpfx)ldd.

	* inet/netinet/ip.h: Define IPTOS_LOWCOST and IPTOS_MINCOST.

	* locale/C-time.c: Update copyright.
	* locale/localeinfo.h: Likewise.
	* sysdeps/unix/bsd/bsd4.4/direntry.h: Likewise.

	* locale/programs/ld-time.c (time_finish): Correct message string.
	* locale/programs/linereader.c (lr_token): Use correctly `number'
	not `digit' in message string.

	* stdlib/strtol.c [UNSIGNED]: Don't punt immediately when `-' is
	seen.  Instead return ULONG_MAX and set ERANGE.
	* stdlib/tst-strtol.c: Correct test to reflect above change.

Sun Jan 19 03:22:30 1997  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/sys/mtio.h: Don't use <linux/mtio.h>.
	We must not use <linux/posix_types.h>.

	* sysdeps/unix/sysv/linux/sys/ipc_buf.h: Don't use __kernel_* types
	since we must not use <linux/posix_types.h>.
	* sysdeps/unix/sysv/linux/sys/procfs.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sys/ipc_buf.h: New file.  Similar
	to sysdeps/unix/sysv/linux/sys/ipc_buf.h, but use alpha relavent
	types.
	* sysdeps/unix/sysv/linux/alpha/sys/procfs.h: New file.  Similar
	to sysdeps/unix/sysv/linux/sys/procfs.h, but use alpha relavent
	types.

Sun Jan 19 01:48:20 1997  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/libm-i387/e_exp.S: Correct computation of fractional
	part.
	* sysdeps/libm-i387/e_expf.S: Likewise.
	* sysdeps/libm-i387/e_expl.S: Likewise.
	* sysdeps/libm-i387/s_expm1.S: Correct computation of fractional
	part.  Take care of additional value left on stack by fscale.
	* sysdeps/libm-i387/s_expm1f.S: Likewise.
	* sysdeps/libm-i387/s_expm1l.S: Likewise.

Fri Jan 17 17:45:32 1997  Ulrich Drepper  <drepper@cygnus.com>

	* posix/getopt.c: Change all direct usages of `gettext' to `_'.

	* sysdeps/generic/sysd-stdio.c (__stdio_reopen): Add missing
	parameter.
	Reported by Harmanjit Singh <harman@netearth.iitd.ernet.in>.

Thu Jan 16 23:39:25 1997  Ulrich Drepper  <drepper@cygnus.com>

	* stdio-common/Makefile (tests): Add scanf11.
	* stdio-common/scanf11.c: New file.
	* stdio-common/vfscanf.c (__vfscanf): Increment `done' when %n
	was processed and value is not suppressed.
	* stdio-common/bug10.c: Correct test to expect %n increment the
	return value of scanf.
	* stdio-common/scanf1.c: Likewise.
	* stdio-common/scanf3.c: Likewise.
	* stdio-common/scanf10.c: Likewise.
	* stdio-common/tstdiomisc.c: Likewise.

	* time/strptime.c: Add lots of conditional compiling to enable use
	outside glibc.  When used in glibc, make sure C locale format
	strings will always be recognized.

Sat Jan 11 18:53:47 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/sys/sysmacros.h (major, minor, makedev):
	Fix definitions so that they work with __kernel_dev_t.

Sat Jan 11 14:24:10 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/kernel_sigaction.h,
	sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h,
	sysdeps/unix/sysv/linux/sigaction.c: New files.
	* sysdeps/unix/sysv/linux/syscalls.list: Add s_sigaction.

Sun Jan 12 15:22:33 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libc-symbols.h (link_warning): Make sure that the .gnu.warning
	section is not allocated.
	Update and reformat copyright.

Sun Jan 12 12:19:28 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/Makefile ($(objpfx)ldd): Fix depedency list.

Sat Jan 11 15:11:26 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/Makefile ($(common-objpfx)sysd-syscalls): Fix
	command so that it works in subdirectories.

Wed Jan  8 22:07:58 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/i386/syscalls.list: Add s_getgroups and
	s_setgroups.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/getgroups.c,
	sysdeps/unix/sysv/linux/i386/setgroups.c,
	sysdeps/unix/sysv/linux/m68k/getgroups.c,
	sysdeps/unix/sysv/linux/m68k/setgroups.c: New files.

Wed Jan  8 19:42:59 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (config.status): Delete bogus rule.
	($(objpfx)glibcbug): Renamed from plain `glibcbug', depend on
	config.status in build directory, fix command to change to build
	directory.
	* Makeconfig ($(common-objpfx)config.status): Depend on version.h.

Thu Jan  9 08:47:54 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* glibcbug.in (while): We test for four and not five conditions,
	set MAIL_AGENT instead of RMAIL, filter spaces and tabs.

Thu Jan 16 22:00:27 1997  Ulrich Drepper  <drepper@cygnus.com>

	* misc/syslog.c: Don't define cancel_handler if _LIBC_REENTRANT
	is not defined.  Reported by Andreas Jaeger.

Thu Jan  9 08:47:54 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* new-malloc/malloc.c (__MALLOC_P): define call to pthread
	initializer only if NO_THREADS is not defined.

Wed Jan  8 21:28:58 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* resolv/nss_dns/dns-host.c: Clean-up: delete unnecessary includes
	and variables.

Thu Jan 16 21:50:27 1997  Ulrich Drepper  <drepper@cygnus.com>

	* inet/arpa/inet.h: Include <netinet/in.h> to get struct in_addr
	defined.

Tue Jan  7 17:29:59 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules (LDLIBS-c.so): New variable.

Tue Jan  7 19:22:00 1997  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(includedir)/gnu/lib-names.h): Define the library
	names as strings, not as sequence of tokens that may fall apart.

Fri Jan 10 14:08:41 1997  Roland McGrath  <roland@fmh.frob.com>

	* time/tzfile.c (__tzfile_read): Check for bogus type and zone name
	indices in data file and punt, so a bogus file can't crash us.

Thu Jan 16 20:29:15 1997  Ulrich Drepper  <drepper@cygnus.com>

	* values.h [__USE_MISC]: Define BITSPERBYTE.

Fri Jan 17 14:16:28 1997  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* stdio/vdprintf.c: Moved file to ...
	* sysdeps/posix/vdprintf.c: Here.  De-ansideclificate.
	* sysdeps/stub/vdprintf.c: New file.
	* sysdeps/mach/hurd/vdprintf.c: New file.

Thu Jan  9 15:59:35 1997  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* sysdeps/mach/hurd/posix_opt.h: New file.

	* sysdeps/mach/hurd/sigwait.c (sigwait): Don't affect signal mask.

	* sysdeps/unix/bsd/tcsendbrk.c (tcsendbreak): Finish
	deansideclification.

	* sysdeps/mach/libc-lock.h: Add kludges to pretend to implement
	recursive locks.

Tue Jan  7 09:48:15 1997  Andreas Jaeger  <aj@arthur.pfalz.de>

	* signal/sigempty.c (sigemptyset): Correct typo: Empty set should
	have all bits zero.

1 files changed, 33 insertions, 9 deletions

diff --git a/time/tzfile.c b/time/tzfile.c
index d80789d..761ddc9 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 95, 96, 97 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -113,16 +113,28 @@ __tzfile_read (const char *file)
 
   if (*file != '/')
     {
-      static const char tzdir[] = TZDIR;
-      register const unsigned int len = strlen (file) + 1;
-      char *new = (char *) __alloca (sizeof (tzdir) + len);
-      memcpy (new, tzdir, sizeof(tzdir) - 1);
-      new[sizeof (tzdir) - 1] = '/';
-      memcpy (&new[sizeof (tzdir)], file, len);
+      static const char default_tzdir[] = TZDIR;
+      const char *tzdir;
+      unsigned int len, tzdir_len;
+      char *new;
+
+      tzdir = __secure_getenv ("TZDIR");
+      if (tzdir == NULL || *tzdir == '\0')
+	{
+	  tzdir = default_tzdir;
+	  tzdir_len = sizeof (default_tzdir) - 1;
+	}
+      else
+	tzdir_len = strlen (tzdir);
+      len = strlen (file) + 1;
+      new = (char *) __alloca (tzdir_len + 1 + len);
+      memcpy (new, tzdir, tzdir_len);
+      new[tzdir_len] = '/';
+      memcpy (&new[tzdir_len + 1], file, len);
       file = new;
     }
 
-  f = fopen(file, "r");
+  f = fopen (file, "r");
   if (f == NULL)
     return;
 
@@ -171,6 +183,12 @@ __tzfile_read (const char *file)
       fread(type_idxs, 1, num_transitions, f) != num_transitions)
     goto lose;
 
+  /* Check for bogus indices in the data file, so we can hereafter
+     safely use type_idxs[T] as indices into `types' and never crash.  */
+  for (i = 0; i < num_transitions; ++i)
+    if (type_idxs[i] >= num_types)
+      goto lose;
+
   if (BYTE_ORDER != BIG_ENDIAN || sizeof (time_t) != 4)
     {
       /* Decode the transition times, stored as 4-byte integers in
@@ -189,6 +207,8 @@ __tzfile_read (const char *file)
 	  fread (&types[i].isdst, 1, 1, f) != 1 ||
 	  fread (&types[i].idx, 1, 1, f) != 1)
 	goto lose;
+      if (types[i].idx >= chars) /* Bogus index in data file.  */
+	goto lose;
       types[i].offset = (long int) decode (x);
     }
 
@@ -335,6 +355,10 @@ __tzfile_default (char *std, char *dst, long int stdoff, long int dstoff)
   types[1].offset = dstoff;
   types[1].isdst = 1;
 
+  /* Reset the zone names to point to the user's names.  */
+  __tzname[0] = &zone_names[0];
+  __tzname[1] = &zone_names[stdlen];
+
   compute_tzname_max (stdlen + dstlen);
 }
 
@@ -425,7 +449,7 @@ compute_tzname_max (size_t chars)
       const char *start = p;
       while (*p != '\0')
 	++p;
-      if (p - start > __tzname_cur_max)
+      if ((size_t) (p - start) > __tzname_cur_max)
 	__tzname_cur_max = p - start;
     } while (++p < &zone_names[chars]);
 }