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-rw-r--r--time/Makefile32
-rw-r--r--time/mktime.c9
-rw-r--r--time/time.h10
-rw-r--r--time/tzfile.c14
4 files changed, 38 insertions, 27 deletions
diff --git a/time/Makefile b/time/Makefile
index 7f8513cc6a..b994eee1ac 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -91,22 +91,22 @@ $(tzfiles:%=$(objpfx)z.%): $(objpfx)z.%: % Makefile
# Kludge alert: we use an implicit rule (in what we are generating here)
# because that is the only way to tell Make that the one command builds all
# the files.
- (echo 'define $*-zones' ;\
- awk '$$1 == "Zone" { print $$2 } $$1 == "Link" { print $$3 }' $^;\
- echo 'endef' ;\
- echo '$*-zones := $$(subst $$(nl), ,$$($*-zones))' ;\
- echo 'ifdef $*-zones' ;\
- echo '$$(addprefix $$(datadir)/zone%/right/,$$($*-zones)): \' ;\
- echo '$< $$(objpfx)zic leapseconds yearistype' ;\
- echo ' $$(tzcompile)' ;\
- echo '$$(addprefix $$(datadir)/zone%/posix/,$$($*-zones)): \' ;\
- echo '$< $$(objpfx)zic /dev/null yearistype' ;\
- echo ' $$(tzcompile)' ;\
- echo '$$(addprefix $$(datadir)/zone%/,$$($*-zones)): \' ;\
- echo '$< $$(objpfx)zic $$(leapseconds) yearistype' ;\
- echo ' $$(tzcompile)' ;\
- echo 'endif' ;\
- echo 'zonenames := $$(zonenames) $$($*-zones)' ;\
+ (echo 'define $*-zones' ;\
+ awk '$$1 == "Zone" { print $$2 } $$1 == "Link" { print $$3 }' $^ ;\
+ echo 'endef' ;\
+ echo '$*-zones := $$(subst $$(nl), ,$$($*-zones))' ;\
+ echo 'ifdef $*-zones' ;\
+ echo '$$(addprefix $$(inst_datadir)/zone%/right/,$$($*-zones)): \' ;\
+ echo '$< $$(objpfx)zic leapseconds yearistype' ;\
+ echo ' $$(tzcompile)' ;\
+ echo '$$(addprefix $$(inst_datadir)/zone%/posix/,$$($*-zones)): \' ;\
+ echo '$< $$(objpfx)zic /dev/null yearistype' ;\
+ echo ' $$(tzcompile)' ;\
+ echo '$$(addprefix $$(inst_datadir)/zone%/,$$($*-zones)): \' ;\
+ echo '$< $$(objpfx)zic $$(leapseconds) yearistype' ;\
+ echo ' $$(tzcompile)' ;\
+ echo 'endif' ;\
+ echo 'zonenames := $$(zonenames) $$($*-zones)' ;\
) > $@.new
mv $@.new $@
diff --git a/time/mktime.c b/time/mktime.c
index 223872f228..fd242b1545 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -85,9 +85,6 @@
((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
#endif
-/* Prototype for the internal function to get information based on TZ. */
-extern void __tzset_internal __P ((int always));
-
/* How many days come before each month (0-12). */
const unsigned short int __mon_yday[2][13] =
{
@@ -164,8 +161,10 @@ mktime (tp)
struct tm *tp;
{
#ifdef _LIBC
- /* Update internal database according to current TZ setting. */
- __tzset_internal (1);
+ /* POSIX.1 8.1.1 requires that whenever mktime() is called, the
+ time zone names contained in the external variable `tzname' shall
+ be set as if the tzset() function had been called. */
+ __tzset ();
#endif
return __mktime_internal (tp, localtime_r, &localtime_offset);
diff --git a/time/time.h b/time/time.h
index d12236fdf2..681b6007d8 100644
--- a/time/time.h
+++ b/time/time.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 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
@@ -171,7 +171,7 @@ extern struct tm *gmtime __P ((__const time_t *__timer));
of *TIMER in the local timezone. */
extern struct tm *localtime __P ((__const time_t *__timer));
-#ifdef __USE_REENTRANT
+#if defined __USE_POSIX || defined __USE_REENTRANT
/* Return the `struct tm' representation of *TIMER in UTC,
using *TP to store the result. */
extern struct tm *__gmtime_r __P ((__const time_t *__timer,
@@ -185,7 +185,7 @@ extern struct tm *__localtime_r __P ((__const time_t *__timer,
struct tm *__tp));
extern struct tm *localtime_r __P ((__const time_t *__timer,
struct tm *__tp));
-#endif /* reentrant */
+#endif /* POSIX or reentrant */
/* Compute the `struct tm' representation of *T,
offset OFFSET seconds east of UTC,
@@ -201,7 +201,7 @@ extern char *asctime __P ((__const struct tm *__tp));
/* Equivalent to `asctime (localtime (timer))'. */
extern char *ctime __P ((__const time_t *__timer));
-#ifdef __USE_REENTRANT
+#if defined __USE_POSIX || defined __USE_REENTRANT
/* Reentrant versions of the above functions. */
/* Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n"
@@ -211,7 +211,7 @@ extern char *asctime_r __P ((__const struct tm *__tp, char *__buf));
/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'. */
extern char *ctime_r __P ((__const time_t *__timer, char *__buf));
-#endif /* reentrant */
+#endif /* POSIX or reentrant */
/* Defined in localtime.c. */
diff --git a/time/tzfile.c b/time/tzfile.c
index 761ddc9539..ed7b0932f3 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -21,6 +21,7 @@
#include <time.h>
#include <string.h>
#include <limits.h>
+#include <unistd.h>
#define NOID
#include <tzfile.h>
@@ -79,6 +80,7 @@ decode (const void *ptr)
void
__tzfile_read (const char *file)
{
+ static const char default_tzdir[] = TZDIR;
size_t num_isstd, num_isgmt;
register FILE *f;
struct tzhead tzhead;
@@ -111,9 +113,19 @@ __tzfile_read (const char *file)
/* User specified the empty string; use UTC explicitly. */
file = "Universal";
+ /* We must not allow to read an arbitrary file in a setuid program.
+ So we fail for any file which is not in the directory hierachy
+ starting at TZDIR. */
+ if (__libc_enable_secure
+ && ((*file == '/'
+ && memcmp (file, default_tzdir, sizeof (default_tzdir) - 1) != 0)
+ || strstr (file, "../") != NULL))
+ /* This test a certainly a bit too restrictive but it should catch all
+ critical case. */
+ return;
+
if (*file != '/')
{
- static const char default_tzdir[] = TZDIR;
const char *tzdir;
unsigned int len, tzdir_len;
char *new;