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2000-07-28  Philip Blundell  <philb@gnu.org>

	* math/test-fpucw.c: Ignore reserved bits in control word.

2000-07-28  Philip Blundell  <philb@gnu.org>

	* sysdeps/unix/sysv/linux/arm/sysdep.h (PSEUDO_RET): New macro.
	(ret): Redefine to PSEUDO_RET.
	(PSEUDO): Remove jump to syscall_error.

2000-07-29  Mark Kettenis  <kettenis@gnu.org>

	* resolv/README: Add some information about using the resolver in
	multi-threaded code and with C++.  Spelling fixes.

2000-07-29  Mark Kettenis  <kettenis@gnu.org>

	* resolv/resolv.h (struct __sockaddr_in): Remove.
	(struct __res_state) [!_LIBC]: Remove reference to __sockaddr_in.

	* sysdeps/powerpc/backtrace.c (struct layout): Make pointers
	__unbounded.
This commit is contained in:
Ulrich Drepper
2000-07-29 18:08:15 +00:00
parent 2da345643a
commit 497b8ef43f
8 changed files with 166 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
ChangeLog
View File

@@ -1,3 +1,23 @@
2000-07-28 Philip Blundell <philb@gnu.org>
* math/test-fpucw.c: Ignore reserved bits in control word.
2000-07-28 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/sysdep.h (PSEUDO_RET): New macro.
(ret): Redefine to PSEUDO_RET.
(PSEUDO): Remove jump to syscall_error.
2000-07-29 Mark Kettenis <kettenis@gnu.org>
* resolv/README: Add some information about using the resolver in
multi-threaded code and with C++. Spelling fixes.
2000-07-29 Mark Kettenis <kettenis@gnu.org>
* resolv/resolv.h (struct __sockaddr_in): Remove.
(struct __res_state) [!_LIBC]: Remove reference to __sockaddr_in.
2000-07-29 Greg McGary <greg@mcgary.org> 2000-07-29 Greg McGary <greg@mcgary.org>
* Rules (test-bp-inputs, make-test-out): New variables. * Rules (test-bp-inputs, make-test-out): New variables.
@@ -28,7 +48,8 @@
pointers as __unbounded. Wrap bounds around variable `current'. pointers as __unbounded. Wrap bounds around variable `current'.
* sysdeps/i386/backtrace.c (struct layout): Make pointers __unbounded. * sysdeps/i386/backtrace.c (struct layout): Make pointers __unbounded.
(ADVANCE_STACK_FRAME): Wrap bounds around return value. (ADVANCE_STACK_FRAME): Wrap bounds around return value.
* sysdeps/powerpc/backtrace.c (struct layout): Make pointers __unbounded. * sysdeps/powerpc/backtrace.c (struct layout): Make pointers
__unbounded.
(__backtrace): Qualify frame-pointer chain and return address (__backtrace): Qualify frame-pointer chain and return address
pointers as __unbounded. Wrap bounds around variable `current'. pointers as __unbounded. Wrap bounds around variable `current'.

5
localedata/ChangeLog
View File

@@ -1,5 +1,10 @@
2000-07-29 Ulrich Drepper <drepper@redhat.com> 2000-07-29 Ulrich Drepper <drepper@redhat.com>
* tst-digits.c: Add tests for wprintf.
* tests/test7.cm: Change so that it is usable for wprintf tests.
* tst-locale.sh: Fix typo in last change.
* tst-digits.c: Add ctype and wctype tests. * tst-digits.c: Add ctype and wctype tests.
2000-07-28 Ulrich Drepper <drepper@redhat.com> 2000-07-28 Ulrich Drepper <drepper@redhat.com>

106
localedata/tests/test7.cm
View File

@@ -1,4 +1,4 @@
<code_set_name> test7 <code_set_name> UTF-8
<mb_cur_min> 1 <mb_cur_min> 1
<mb_cur_max> 3 <mb_cur_max> 3
@@ -21,58 +21,58 @@ CHARMAP
<U0037> \x37 <U0037> \x37
<U0038> \x38 <U0038> \x38
<U0039> \x39 <U0039> \x39
<U0061> \x41 <U0041> \x41
<U0062> \x42 <U0042> \x42
<U0063> \x43 <U0043> \x43
<U0064> \x44 <U0044> \x44
<U0065> \x45 <U0045> \x45
<U0066> \x46 <U0046> \x46
<U0067> \x47 <U0047> \x47
<U0068> \x48 <U0048> \x48
<U0069> \x49 <U0049> \x49
<U006A> \x4A <U004A> \x4a
<U006B> \x4B <U004B> \x4b
<U006C> \x4C <U004C> \x4c
<U006D> \x4D <U004D> \x4d
<U006E> \x4E <U004E> \x4e
<U006F> \x4F <U004F> \x4f
<U0070> \x50 <U0050> \x50
<U0071> \x51 <U0051> \x51
<U0072> \x52 <U0052> \x52
<U0073> \x53 <U0053> \x53
<U0074> \x54 <U0054> \x54
<U0075> \x55 <U0055> \x55
<U0076> \x56 <U0056> \x56
<U0077> \x57 <U0057> \x57
<U0078> \x58 <U0058> \x58
<U0079> \x59 <U0059> \x59
<U007A> \x5A <U005A> \x5a
<U0041> \x61 <U0061> \x61
<U0042> \x62 <U0062> \x62
<U0043> \x63 <U0063> \x63
<U0044> \x64 <U0064> \x64
<U0045> \x65 <U0065> \x65
<U0046> \x66 <U0066> \x66
<U0047> \x67 <U0067> \x67
<U0048> \x68 <U0068> \x68
<U0049> \x69 <U0069> \x69
<U004A> \x6a <U006A> \x6A
<U004B> \x6b <U006B> \x6B
<U004C> \x6c <U006C> \x6C
<U004D> \x6d <U006D> \x6D
<U004E> \x6e <U006E> \x6E
<U004F> \x6f <U006F> \x6F
<U0050> \x70 <U0070> \x70
<U0051> \x71 <U0071> \x71
<U0052> \x72 <U0072> \x72
<U0053> \x73 <U0073> \x73
<U0054> \x74 <U0074> \x74
<U0055> \x75 <U0075> \x75
<U0056> \x76 <U0076> \x76
<U0057> \x77 <U0077> \x77
<U0058> \x78 <U0078> \x78
<U0059> \x79 <U0079> \x79
<U005A> \x7a <U007A> \x7A
<U2080> \xe2\x82\x80 <U2080> \xe2\x82\x80
<U2081> \xe2\x82\x81 <U2081> \xe2\x82\x81
<U2082> \xe2\x82\x82 <U2082> \xe2\x82\x82

2
localedata/tst-locale.sh
View File

@@ -52,7 +52,7 @@ test_locale tests/test3.cm tests/test3.def test3
test_locale tests/test4.cm tests/test4.def test4 test_locale tests/test4.cm tests/test4.def test4
test_locale tests/test5.cm tests/test5.def test5 tests/test5.ds test_locale tests/test5.cm tests/test5.def test5 tests/test5.ds
test_locale tests/test6.cm tests/test6.def test6 tests/test6.ds test_locale tests/test6.cm tests/test6.def test6 tests/test6.ds
test_locale tests/test7.cm tests/test4.def test7 test_locale tests/test7.cm tests/test7.def test7
exit 0 exit 0

9
math/test-fpucw.c
View File

@@ -29,10 +29,13 @@ main (void)
_FPU_GETCW (cw); _FPU_GETCW (cw);
if (cw != _FPU_DEFAULT) cw &= ~_FPU_RESERVED;
printf ("control word is 0x%x but should be 0x%x.\n", cw, _FPU_DEFAULT);
return (cw != _FPU_DEFAULT); if (cw != (_FPU_DEFAULT & ~_FPU_RESERVED))
printf ("control word is 0x%x but should be 0x%x.\n",
cw, (_FPU_DEFAULT & ~_FPU_RESERVED));
return cw != (_FPU_DEFAULT & ~_FPU_RESERVED);
#else #else
return 0; return 0;

74
resolv/README
View File

@@ -1,3 +1,6 @@
The resolver in the GNU C Library
*********************************
Starting with version 2.2, the resolver in the GNU C Library comes Starting with version 2.2, the resolver in the GNU C Library comes
from BIND 8. Only a subset of the src/lib/resolv part of libbind is from BIND 8. Only a subset of the src/lib/resolv part of libbind is
included here; basically the parts that are needed to provide the included here; basically the parts that are needed to provide the
@@ -30,11 +33,78 @@ The resolver in the GNU C Library still differs from what's in BIND
* The `res_close' function in glibc only tries to close open files * The `res_close' function in glibc only tries to close open files
referenced through `_res' if the RES_INIT bit is set in referenced through `_res' if the RES_INIT bit is set in
`_res.options'. This fixes a potential security bug with programs `_res.options'. This fixes a potential security bug with programs
that bogusly call `res_close' without initializing the resolver that bogusly call `res_close' without initialising the resolver
state first. Note that the thread-safe `res_nclose' still doesn't state first. Note that the thread-safe `res_nclose' still doesn't
check the RES_INIT bit. By the way, you're not really supposed to check the RES_INIT bit. By the way, you're not really supposed to
call `res_close/res_nclose' directly. call `res_close/res_nclose' directly.
* The resolver in glibc can connect to a nameserver over IPv6. Just
specify the IPv6 address in /etc/resolv.conf. You cannot change the
address of an IPv6 nameserver dynamically in your program though.
Using the resolver in multi-threaded code
=========================================
The traditional resolver interfaces `res_query', `res_search',
`res_mkquery', `res_send' and `res_init', used a static (global)
resolver state stored in the `_res' structure. Therefore, these
interfaces are not thread-safe. Therefore, BIND 8.2 introduced a set
of "new" interfaces `res_nquery', `res_nsearch', `res_nmkquery',
`res_nsend' and `res_ninit' that take a `res_state' as their first
argument, so you can use a per-thread resolver state. In glibc, when
you link with -lpthread, such a per-thread resolver state is already
present. It can be accessed using `_res', which has been redefined as
a macro, in a similar way to what has been done for the `errno' and
`h_errno' variables. This per-thread resolver state is also used for
the `gethostby*' family of functions, which means that for example
`gethostbyname_r' is now fully thread-safe and re-entrant. The
traditional resolver interfaces however, continue to use a single
resolver state and are therefore still thread-unsafe. The resolver
state is the same resolver state that is used for the initial ("main")
thread.
This has the following consequences for existing binaries and source
code:
* Single-threaded programs will continue to work. There should be no
user-visible changes when you recompile them.
* Multi-threaded programs that use the traditional resolver interfaces
in the "main" thread should continue to work, except that they no
longer see any changes in the global resolver state caused by calls
to, for example, `gethostbyname' in other threads. Again there
should be no user-visible changes when you recompile these programs.
* Multi-threaded programs that use the traditional resolver interfaces
in more than one thread should be just as buggy as before (there are
no problems if you use proper locking of course). If you recompile
these programs, manipulating the _res structure in threads other
than the "main" thread will seem to have no effect though.
* In Multi-threaded that manipulate the _res structure, calls to
functions like `gethostbyname' in threads other than the "main"
thread won't be influenced by the those changes anymore. So if you
set RES_USE_INET6, a call to `gethostbyname' won't return any IPv6
hosts anymore. If you recompile such programs, manipulating the
_res structure will affect the thread in which you do so instead of
the "main" thread.
We recommend to use the new thread-safe interfaces in new code, since
the traditional interfaces have been deprecated by the BIND folks.
For compatibility with other (older) systems you might want to
continue to use those interfaces though.
Using the resolver in C++ code
==============================
There resolver contains some hooks which will allow the user to
install some callback functions that make it possible to filter DNS
requests and responses. Although we do not encourage you to make use
of this facility at all, C++ developers should realise that it isn't
safe to throw exceptions from such callback functions.
Source code Source code
=========== ===========
@@ -78,7 +148,7 @@ src/lib/inet/
src/lib/isc/ src/lib/isc/
base64.c base64.c
Some of these files have been optimized a bit, and adaptations have Some of these files have been optimised a bit, and adaptations have
been made to make them fit in with the rest of glibc. The more been made to make them fit in with the rest of glibc. The more
non-obvious changes are wrapped in something like `#ifdef _LIBC'. non-obvious changes are wrapped in something like `#ifdef _LIBC'.

14
resolv/resolv.h
View File

@@ -123,16 +123,6 @@ struct res_sym {
#define RES_DFLRETRY 2 /* Default #/tries. */ #define RES_DFLRETRY 2 /* Default #/tries. */
#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */ #define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
/*
* Like "struct sockaddr_in", but without any padding (to avoid making
* "struct __rest_state" too large).
*/
struct __sockaddr_in {
__SOCKADDR_COMMON (sin_);
in_port_t sin_port;
struct in_addr sin_addr;
};
struct __res_state { struct __res_state {
int retrans; /* retransmition time interval */ int retrans; /* retransmition time interval */
int retry; /* number of times to retransmit */ int retry; /* number of times to retransmit */
@@ -163,12 +153,8 @@ struct __res_state {
u_int16_t nscount; u_int16_t nscount;
u_int16_t nstimes[MAXNS]; /* ms. */ u_int16_t nstimes[MAXNS]; /* ms. */
int nssocks[MAXNS]; int nssocks[MAXNS];
#ifdef _LIBC
u_int16_t nscount6; u_int16_t nscount6;
struct sockaddr_in6 *nsaddrs[MAXNS]; struct sockaddr_in6 *nsaddrs[MAXNS];
#else
struct __sockaddr_in nsaddrs[MAXNS];
#endif
} _ext; } _ext;
} _u; } _u;
}; };

9
sysdeps/unix/sysv/linux/arm/sysdep.h
View File

@@ -52,8 +52,13 @@
.type syscall_error,%function; \ .type syscall_error,%function; \
ENTRY (name); \ ENTRY (name); \
DO_CALL (args, syscall_name); \ DO_CALL (args, syscall_name); \
cmn r0, $4096; \ cmn r0, $4096;
bhs PLTJMP(C_SYMBOL_NAME(__syscall_error));
#define PSEUDO_RET \
RETINSTR(movcc, pc, lr); \
b PLTJMP(__syscall_error)
#undef ret
#define ret PSEUDO_RET
#undef PSEUDO_END #undef PSEUDO_END
#define PSEUDO_END(name) \ #define PSEUDO_END(name) \