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authorZack Weinberg <zackw@panix.com>2019-08-19 14:18:08 -0400
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2019-10-30 17:03:42 -0300
commit04da832e16a7ba9999ff320869b3d8e623cd8a61 (patch)
tree1e292635107bc080f97c148cb3288c8b49588f5b /sysdeps/unix/sysv/linux
parent8dddf0bd5a3d57fba8da27e93f3d1a7032fce184 (diff)
downloadglibc-04da832e16a7ba9999ff320869b3d8e623cd8a61.tar.gz
Linux/Alpha: don't use timeval32 system calls.
Linux/Alpha has two versions of several system call wrappers that take or return data of type "struct timeval" (possibly nested inside a larger structure). The GLIBC_2.0 version is a compat symbol that calls __NR_osf_foo or __NR_old_foo and uses a struct timeval with a 32-bit tv_sec field. The GLIBC_2.1 version is used for current code, calls __NR_foo, and uses a struct timeval with a 64-bit tv_sec field. This patch changes all of the compat symbols of this type to be wrappers around their GLIBC_2.1 counterparts; the compatibility system calls will no longer be used. It serves as a proposal for part of how we do the transition to 64-bit time_t on systems that currently use 32-bit time_t: * The patched glibc will NOT use system calls that involve 32-bit time_t to implement its compatibility symbols. This will make both our lives and the kernel maintainers' lives easier. The primary argument I've seen against it is that the kernel could warn about uses of the old system calls, helping people find old binaries that need to be recompiled. I think there are several other ways we could accomplish this, e.g. scripts to scan the filesystem for binaries with references to the old symbol versions, or issuing diagnostics ourselves. * The compat symbols do NOT report failure after the Y2038 deadline. An earlier revision of this patch had them return -1 and set errno to EOVERFLOW, but Adhemerval pointed out that many of them have already performed side effects at the point where we discover the overflow, so that would break more than it fixes. Also, we don't want people to be _checking_ for EOVERFLOW from these functions; we want them to recompile with 64-bit time_t. So it's not actually useful for them to report failure to the calling code. * What they do do, when they encounter overflow, is saturate the overflowed "struct timeval"(s): tv_sec is set to INT32_MAX and tv_nsec is set to 999999. That means time stops advancing for programs with 32-bit time_t when they reach the deadline. That's obviously going to break stuff, but I think wrapping around is probably going to break _more_ stuff. I'd be interested to hear arguments against, if anyone has one. The new header file tv32-compat.h is currently Alpha-specific but I mean for it to be reused to aid in writing wrappers for all affected architectures. I only put it in sysdeps/unix/sysv/linux/alpha for now because I haven't checked whether the various "foo32" structures it defines agree with the ABI for ports other than Linux/Alpha. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux')
-rw-r--r--sysdeps/unix/sysv/linux/Makefile2
-rw-r--r--sysdeps/unix/sysv/linux/adjtime.c40
-rw-r--r--sysdeps/unix/sysv/linux/adjtimex.c40
-rw-r--r--sysdeps/unix/sysv/linux/alpha/Makefile2
-rw-r--r--sysdeps/unix/sysv/linux/alpha/adjtime.c82
-rw-r--r--sysdeps/unix/sysv/linux/alpha/adjtimex.c22
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_adjtime.c130
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_getitimer.c43
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_getrusage.c39
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_gettimeofday.c43
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_setitimer.c53
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_settimeofday.c40
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_utimes.c37
-rw-r--r--sysdeps/unix/sysv/linux/alpha/osf_wait4.c41
-rw-r--r--sysdeps/unix/sysv/linux/alpha/syscalls.list27
-rw-r--r--sysdeps/unix/sysv/linux/alpha/tv32-compat.h112
-rw-r--r--sysdeps/unix/sysv/linux/gettimeofday.c14
-rw-r--r--sysdeps/unix/sysv/linux/syscalls.list1
18 files changed, 637 insertions, 131 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index bbab8f8cc3..a7623fb390 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -14,7 +14,7 @@ endif
ifeq ($(subdir),misc)
include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
-sysdep_routines += clone umount umount2 readahead \
+sysdep_routines += adjtimex clone umount umount2 readahead \
setfsuid setfsgid epoll_pwait signalfd \
eventfd eventfd_read eventfd_write prlimit \
personality epoll_wait tee vmsplice splice \
diff --git a/sysdeps/unix/sysv/linux/adjtime.c b/sysdeps/unix/sysv/linux/adjtime.c
index 6d1e129ccc..6b8021caa3 100644
--- a/sysdeps/unix/sysv/linux/adjtime.c
+++ b/sysdeps/unix/sysv/linux/adjtime.c
@@ -23,39 +23,14 @@
#define MAX_SEC (INT_MAX / 1000000L - 2)
#define MIN_SEC (INT_MIN / 1000000L + 2)
-#ifndef MOD_OFFSET
-#define modes mode
-#endif
-
-#ifndef TIMEVAL
-#define TIMEVAL timeval
-#endif
-
-#ifndef TIMEX
-#define TIMEX timex
-#endif
-
-#ifndef ADJTIME
-#define ADJTIME __adjtime
-#endif
-
-#ifndef ADJTIMEX
-#define NO_LOCAL_ADJTIME
-#define ADJTIMEX(x) __adjtimex (x)
-#endif
-
-#ifndef LINKAGE
-#define LINKAGE
-#endif
-
-LINKAGE int
-ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv)
+int
+__adjtime (const struct timeval *itv, struct timeval *otv)
{
- struct TIMEX tntx;
+ struct timex tntx;
if (itv)
{
- struct TIMEVAL tmp;
+ struct timeval tmp;
/* We will do some check here. */
tmp.tv_sec = itv->tv_sec + itv->tv_usec / 1000000L;
@@ -68,7 +43,7 @@ ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv)
else
tntx.modes = ADJ_OFFSET_SS_READ;
- if (__glibc_unlikely (ADJTIMEX (&tntx) < 0))
+ if (__glibc_unlikely (__adjtimex (&tntx) < 0))
return -1;
if (otv)
@@ -87,6 +62,9 @@ ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv)
return 0;
}
-#ifdef NO_LOCAL_ADJTIME
+#ifdef VERSION_adjtime
+weak_alias (__adjtime, __wadjtime);
+default_symbol_version (__wadjtime, adjtime, VERSION_adjtime);
+#else
weak_alias (__adjtime, adjtime)
#endif
diff --git a/sysdeps/unix/sysv/linux/adjtimex.c b/sysdeps/unix/sysv/linux/adjtimex.c
new file mode 100644
index 0000000000..6d62c72a17
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/adjtimex.c
@@ -0,0 +1,40 @@
+/* Tune kernel clock. Linux specific syscall.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/timex.h>
+#include <sysdep.h>
+
+int
+___adjtimex (struct timex *buf)
+{
+ return INLINE_SYSCALL_CALL (adjtimex, buf);
+}
+
+#ifdef VERSION_adjtimex
+weak_alias (___adjtimex, __wadjtimex);
+weak_alias (___adjtimex, __wnadjtime);
+default_symbol_version (___adjtimex, __adjtimex, VERSION_adjtimex);
+default_symbol_version (__wadjtimex, adjtimex, VERSION_adjtimex);
+default_symbol_version (__wnadjtime, ntp_adjtime, VERSION_adjtimex);
+libc_hidden_ver (___adjtimex, __adjtimex);
+#else
+strong_alias (___adjtimex, __adjtimex)
+weak_alias (___adjtimex, adjtimex)
+weak_alias (___adjtimex, ntp_adjtime)
+libc_hidden_def (__adjtimex)
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/Makefile b/sysdeps/unix/sysv/linux/alpha/Makefile
index fdd089af71..2e132e474b 100644
--- a/sysdeps/unix/sysv/linux/alpha/Makefile
+++ b/sysdeps/unix/sysv/linux/alpha/Makefile
@@ -9,7 +9,7 @@ sysdep_routines += ieee_get_fp_control ieee_set_fp_control \
ioperm
# Support old timeval32 entry points
-sysdep_routines += osf_gettimeofday osf_settimeofday \
+sysdep_routines += osf_adjtime osf_gettimeofday osf_settimeofday \
osf_getitimer osf_setitimer osf_utimes \
osf_getrusage osf_wait4
diff --git a/sysdeps/unix/sysv/linux/alpha/adjtime.c b/sysdeps/unix/sysv/linux/alpha/adjtime.c
index 4aede1cc40..9cb058ee55 100644
--- a/sysdeps/unix/sysv/linux/alpha/adjtime.c
+++ b/sysdeps/unix/sysv/linux/alpha/adjtime.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1998-2019 Free Software Foundation, Inc.
+/* adjtime -- Adjust the current time of day. Linux/Alpha/tv64 version.
+ Copyright (C) 2019 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
@@ -15,80 +16,7 @@
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
-#include <shlib-compat.h>
-#include <sysdep.h>
-#include <sys/time.h>
-
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-struct timeval32
-{
- int tv_sec, tv_usec;
-};
-
-struct timex32 {
- unsigned int modes; /* mode selector */
- long offset; /* time offset (usec) */
- long freq; /* frequency offset (scaled ppm) */
- long maxerror; /* maximum error (usec) */
- long esterror; /* estimated error (usec) */
- int status; /* clock command/status */
- long constant; /* pll time constant */
- long precision; /* clock precision (usec) (read only) */
- long tolerance; /* clock frequency tolerance (ppm)
- * (read only)
- */
- struct timeval32 time; /* (read only) */
- long tick; /* (modified) usecs between clock ticks */
-
- long ppsfreq; /* pps frequency (scaled ppm) (ro) */
- long jitter; /* pps jitter (us) (ro) */
- int shift; /* interval duration (s) (shift) (ro) */
- long stabil; /* pps stability (scaled ppm) (ro) */
- long jitcnt; /* jitter limit exceeded (ro) */
- long calcnt; /* calibration intervals (ro) */
- long errcnt; /* calibration errors (ro) */
- long stbcnt; /* stability limit exceeded (ro) */
-
- int :32; int :32; int :32; int :32;
- int :32; int :32; int :32; int :32;
- int :32; int :32; int :32; int :32;
-};
-
-#define TIMEVAL timeval32
-#define TIMEX timex32
-#define ADJTIME attribute_compat_text_section __adjtime_tv32
-#define ADJTIMEX(x) INLINE_SYSCALL (old_adjtimex, 1, x)
-#define ADJTIMEX32(x) INLINE_SYSCALL (old_adjtimex, 1, x)
-
+/* We can use the generic Linux implementation, but we have to override its
+ default symbol version. */
+#define VERSION_adjtime GLIBC_2.1
#include <sysdeps/unix/sysv/linux/adjtime.c>
-
-int attribute_compat_text_section
-__adjtimex_tv32 (struct timex32 *tx) { return ADJTIMEX (tx); }
-
-strong_alias (__adjtimex_tv32, __adjtimex_tv32_1);
-strong_alias (__adjtimex_tv32, __adjtimex_tv32_2);
-compat_symbol (libc, __adjtimex_tv32_1, __adjtimex, GLIBC_2_0);
-compat_symbol (libc, __adjtimex_tv32_2, adjtimex, GLIBC_2_0);
-compat_symbol (libc, __adjtime_tv32, adjtime, GLIBC_2_0);
-#endif /* SHLIB_COMPAT */
-
-#undef TIMEVAL
-#undef TIMEX
-#undef ADJTIME
-#undef ADJTIMEX
-#define TIMEVAL timeval
-#define TIMEX timex
-#define ADJTIMEX(x) INLINE_SYSCALL (adjtimex, 1, x)
-
-#include <sysdeps/unix/sysv/linux/adjtime.c>
-
-int
-__adjtimex_tv64 (struct timex *tx) { return ADJTIMEX (tx); }
-
-libc_hidden_ver (__adjtimex_tv64, __adjtimex)
-strong_alias (__adjtimex_tv64, __adjtimex_tv64p);
-weak_alias (__adjtimex_tv64, ntp_adjtime);
-versioned_symbol (libc, __adjtimex_tv64, __adjtimex, GLIBC_2_1);
-versioned_symbol (libc, __adjtimex_tv64p, adjtimex, GLIBC_2_1);
-versioned_symbol (libc, __adjtime, adjtime, GLIBC_2_1);
diff --git a/sysdeps/unix/sysv/linux/alpha/adjtimex.c b/sysdeps/unix/sysv/linux/alpha/adjtimex.c
new file mode 100644
index 0000000000..1a8e0a9529
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/adjtimex.c
@@ -0,0 +1,22 @@
+/* adjtimex -- Adjust the current time of day. Linux/Alpha/tv64 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* We can use the generic Linux implementation, but we have to override its
+ default symbol version. */
+#define VERSION_adjtimex GLIBC_2.1
+#include <sysdeps/unix/sysv/linux/adjtimex.c>
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_adjtime.c b/sysdeps/unix/sysv/linux/alpha/osf_adjtime.c
new file mode 100644
index 0000000000..91ad8747da
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_adjtime.c
@@ -0,0 +1,130 @@
+/* adjtime -- adjust the system clock. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <sys/timex.h>
+#include <tv32-compat.h>
+
+struct timex32 {
+ unsigned int modes; /* mode selector */
+ long offset; /* time offset (usec) */
+ long freq; /* frequency offset (scaled ppm) */
+ long maxerror; /* maximum error (usec) */
+ long esterror; /* estimated error (usec) */
+ int status; /* clock command/status */
+ long constant; /* pll time constant */
+ long precision; /* clock precision (usec) (read only) */
+ long tolerance; /* clock frequency tolerance (ppm)
+ * (read only)
+ */
+ struct timeval32 time; /* (read only) */
+ long tick; /* (modified) usecs between clock ticks */
+
+ long ppsfreq; /* pps frequency (scaled ppm) (ro) */
+ long jitter; /* pps jitter (us) (ro) */
+ int shift; /* interval duration (s) (shift) (ro) */
+ long stabil; /* pps stability (scaled ppm) (ro) */
+ long jitcnt; /* jitter limit exceeded (ro) */
+ long calcnt; /* calibration intervals (ro) */
+ long errcnt; /* calibration errors (ro) */
+ long stbcnt; /* stability limit exceeded (ro) */
+
+ int :32; int :32; int :32; int :32;
+ int :32; int :32; int :32; int :32;
+ int :32; int :32; int :32; int :32;
+};
+
+int
+attribute_compat_text_section
+__adjtime_tv32 (const struct timeval32 *itv, struct timeval32 *otv)
+{
+ struct timeval itv64 = valid_timeval_to_timeval64 (*itv);
+ struct timeval otv64;
+
+ if (__adjtime (&itv64, &otv64) == -1)
+ return -1;
+
+ *otv = valid_timeval64_to_timeval (otv64);
+ return 0;
+}
+
+int
+attribute_compat_text_section
+__adjtimex_tv32 (struct timex32 *tx)
+{
+ struct timex tx64;
+ memset (&tx64, 0, sizeof tx64);
+ tx64.modes = tx->modes;
+ tx64.offset = tx->offset;
+ tx64.freq = tx->freq;
+ tx64.maxerror = tx->maxerror;
+ tx64.esterror = tx->esterror;
+ tx64.status = tx->status;
+ tx64.constant = tx->constant;
+ tx64.precision = tx->precision;
+ tx64.tolerance = tx->tolerance;
+ tx64.tick = tx->tick;
+ tx64.ppsfreq = tx->ppsfreq;
+ tx64.jitter = tx->jitter;
+ tx64.shift = tx->shift;
+ tx64.stabil = tx->stabil;
+ tx64.jitcnt = tx->jitcnt;
+ tx64.calcnt = tx->calcnt;
+ tx64.errcnt = tx->errcnt;
+ tx64.stbcnt = tx->stbcnt;
+ tx64.time = valid_timeval_to_timeval64 (tx->time);
+
+ int status = __adjtimex (&tx64);
+ if (status < 0)
+ return status;
+
+ memset (tx, 0, sizeof *tx);
+ tx->modes = tx64.modes;
+ tx->offset = tx64.offset;
+ tx->freq = tx64.freq;
+ tx->maxerror = tx64.maxerror;
+ tx->esterror = tx64.esterror;
+ tx->status = tx64.status;
+ tx->constant = tx64.constant;
+ tx->precision = tx64.precision;
+ tx->tolerance = tx64.tolerance;
+ tx->tick = tx64.tick;
+ tx->ppsfreq = tx64.ppsfreq;
+ tx->jitter = tx64.jitter;
+ tx->shift = tx64.shift;
+ tx->stabil = tx64.stabil;
+ tx->jitcnt = tx64.jitcnt;
+ tx->calcnt = tx64.calcnt;
+ tx->errcnt = tx64.errcnt;
+ tx->stbcnt = tx64.stbcnt;
+ tx->time = valid_timeval64_to_timeval (tx64.time);
+
+ return status;
+}
+
+strong_alias (__adjtimex_tv32, __adjtimex_tv32_1);
+strong_alias (__adjtimex_tv32, __adjtimex_tv32_2);
+compat_symbol (libc, __adjtimex_tv32_1, __adjtimex, GLIBC_2_0);
+compat_symbol (libc, __adjtimex_tv32_2, adjtimex, GLIBC_2_0);
+compat_symbol (libc, __adjtime_tv32, adjtime, GLIBC_2_0);
+
+#endif /* SHLIB_COMPAT */
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_getitimer.c b/sysdeps/unix/sysv/linux/alpha/osf_getitimer.c
new file mode 100644
index 0000000000..8fe63a72a9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_getitimer.c
@@ -0,0 +1,43 @@
+/* getitimer -- Get the state of an interval timer. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <tv32-compat.h>
+
+int
+attribute_compat_text_section
+__getitimer_tv32 (int which, struct itimerval32 *curr_value)
+{
+ struct itimerval curr_value_64;
+ if (__getitimer (which, &curr_value_64) == -1)
+ return -1;
+
+ /* Write all fields of 'curr_value' regardless of overflow. */
+ curr_value->it_interval
+ = valid_timeval64_to_timeval (curr_value_64.it_interval);
+ curr_value->it_value
+ = valid_timeval64_to_timeval (curr_value_64.it_value);
+ return 0;
+}
+
+compat_symbol (libc, __getitimer_tv32, getitimer, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_getrusage.c b/sysdeps/unix/sysv/linux/alpha/osf_getrusage.c
new file mode 100644
index 0000000000..918e8445d4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_getrusage.c
@@ -0,0 +1,39 @@
+/* utimes -- change file timestamps. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <tv32-compat.h>
+
+int
+__getrusage_tv32 (int who, struct rusage32 *usage32)
+{
+ struct rusage usage64;
+ if (__getrusage (who, &usage64) == -1)
+ return -1;
+
+ rusage64_to_rusage32 (usage32, &usage64);
+ return 0;
+}
+
+compat_symbol (libc, __getrusage_tv32, getrusage, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_gettimeofday.c b/sysdeps/unix/sysv/linux/alpha/osf_gettimeofday.c
new file mode 100644
index 0000000000..59fc614523
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_gettimeofday.c
@@ -0,0 +1,43 @@
+/* gettimeofday -- Get the current time of day. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <tv32-compat.h>
+
+/* Get the current time of day and timezone information putting it
+ into *TV and *TZ. */
+
+int
+attribute_compat_text_section
+__gettimeofday_tv32 (struct timeval32 *restrict tv32, void *restrict tz)
+{
+ struct timeval tv;
+ __gettimeofday (&tv, tz);
+
+ *tv32 = valid_timeval64_to_timeval (tv);
+ return 0;
+}
+
+compat_symbol (libc, __gettimeofday_tv32, __gettimeofday, GLIBC_2_0);
+strong_alias (__gettimeofday_tv32, __gettimeofday_tv32_1);
+compat_symbol (libc, __gettimeofday_tv32_1, gettimeofday, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_setitimer.c b/sysdeps/unix/sysv/linux/alpha/osf_setitimer.c
new file mode 100644
index 0000000000..9184a88a8f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_setitimer.c
@@ -0,0 +1,53 @@
+/* getitimer -- Get the state of an interval timer. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <tv32-compat.h>
+
+int
+attribute_compat_text_section
+__setitimer_tv32 (int which, const struct itimerval32 *restrict new_value,
+ struct itimerval32 *restrict old_value)
+{
+ struct itimerval new_value_64;
+ new_value_64.it_interval
+ = valid_timeval_to_timeval64 (new_value->it_interval);
+ new_value_64.it_value
+ = valid_timeval_to_timeval64 (new_value->it_value);
+
+ if (old_value == NULL)
+ return __setitimer (which, &new_value_64, NULL);
+
+ struct itimerval old_value_64;
+ if (__setitimer (which, &new_value_64, &old_value_64) == -1)
+ return -1;
+
+ /* Write all fields of 'old_value' regardless of overflow. */
+ old_value->it_interval
+ = valid_timeval64_to_timeval (old_value_64.it_interval);
+ old_value->it_value
+ = valid_timeval64_to_timeval (old_value_64.it_value);
+ return 0;
+}
+
+compat_symbol (libc, __setitimer_tv32, setitimer, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_settimeofday.c b/sysdeps/unix/sysv/linux/alpha/osf_settimeofday.c
new file mode 100644
index 0000000000..22de7b510c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_settimeofday.c
@@ -0,0 +1,40 @@
+/* settimeofday -- Set the current time of day. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#include <tv32-compat.h>
+
+/* Set the current time of day and timezone information.
+ This call is restricted to the super-user. */
+int
+attribute_compat_text_section
+__settimeofday_tv32 (const struct timeval32 *tv32,
+ const struct timezone *tz)
+{
+ struct timeval tv = valid_timeval_to_timeval64 (*tv32);
+ return __settimeofday (&tv, tz);
+}
+
+compat_symbol (libc, __settimeofday_tv32, settimeofday, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_utimes.c b/sysdeps/unix/sysv/linux/alpha/osf_utimes.c
new file mode 100644
index 0000000000..dbb72a921e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_utimes.c
@@ -0,0 +1,37 @@
+/* utimes -- change file timestamps. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <tv32-compat.h>
+
+int
+attribute_compat_text_section
+__utimes_tv32 (const char *filename, const struct timeval32 times32[2])
+{
+ struct timeval times[2];
+ times[0] = valid_timeval_to_timeval64 (times32[0]);
+ times[1] = valid_timeval_to_timeval64 (times32[1]);
+ return __utimes (filename, times);
+}
+
+compat_symbol (libc, __utimes_tv32, utimes, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/osf_wait4.c b/sysdeps/unix/sysv/linux/alpha/osf_wait4.c
new file mode 100644
index 0000000000..e8db554660
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/osf_wait4.c
@@ -0,0 +1,41 @@
+/* wait4 -- wait for process to change state. Linux/Alpha/tv32 version.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/wait.h>
+#include <tv32-compat.h>
+
+pid_t
+attribute_compat_text_section
+__wait4_tv32 (pid_t pid, int *status, int options, struct rusage32 *usage32)
+{
+ struct rusage usage64;
+ pid_t child = __wait4 (pid, status, options, &usage64);
+
+ if (child >= 0 && usage32 != NULL)
+ rusage64_to_rusage32 (usage32, &usage64);
+ return child;
+}
+
+compat_symbol (libc, __wait4_tv32, wait4, GLIBC_2_0);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index 12cd021b60..c786aa751e 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -1,4 +1,4 @@
-# File name Caller Syscall name # args Strong name Weak names
+# File name Caller Syscall name Args Strong name Weak names
sigstack - sigstack 2 sigstack
@@ -22,23 +22,14 @@ pciconfig_read EXTRA pciconfig_read 5 pciconfig_read
pciconfig_write EXTRA pciconfig_write 5 pciconfig_write
pciconfig_iobase EXTRA pciconfig_iobase 3 __pciconfig_iobase pciconfig_iobase
-# support old timeval32 entry points
-osf_gettimeofday - osf_gettimeofday 2 __gettimeofday_tv32 __gettimeofday@GLIBC_2.0 gettimeofday@GLIBC_2.0
-osf_settimeofday - osf_settimeofday 2 __settimeofday_tv32 settimeofday@GLIBC_2.0
-osf_getitimer - osf_getitimer 2 __getitimer_tv32 getitimer@GLIBC_2.0
-osf_setitimer - osf_setitimer 3 __setitimer_tv32 setitimer@GLIBC_2.0
-osf_utimes - osf_utimes 2 __utimes_tv32 utimes@GLIBC_2.0
-osf_getrusage - osf_getrusage 2 __getrusage_tv32 getrusage@GLIBC_2.0
-osf_wait4 - osf_wait4 4 __wait4_tv32 wait4@GLIBC_2.0
-
-# support new timeval64 entry points
-gettimeofday - gettimeofday 2 __GI___gettimeofday gettimeofday@@GLIBC_2.1 __gettimeofday@@GLIBC_2.1
-settimeofday - settimeofday 2 __settimeofday settimeofday@@GLIBC_2.1
-getitimer - getitimer 2 __getitimer getitimer@@GLIBC_2.1
-setitimer - setitimer 3 __setitimer setitimer@@GLIBC_2.1
-utimes - utimes 2 __utimes utimes@@GLIBC_2.1
-getrusage - getrusage 2 __getrusage getrusage@@GLIBC_2.1
-wait4 - wait4 4 __wait4 wait4@@GLIBC_2.1
+# timeval64 entry points (see osf_*.c for GLIBC_2.0 timeval32 equivalents)
+gettimeofday - gettimeofday i:pP __GI___gettimeofday gettimeofday@@GLIBC_2.1 __gettimeofday@@GLIBC_2.1
+settimeofday - settimeofday i:PP __settimeofday settimeofday@@GLIBC_2.1
+getitimer - getitimer i:ip __getitimer getitimer@@GLIBC_2.1
+setitimer - setitimer i:ipP __setitimer setitimer@@GLIBC_2.1
+utimes - utimes i:sp __utimes utimes@@GLIBC_2.1
+getrusage - getrusage i:ip __getrusage getrusage@@GLIBC_2.1
+wait4 - wait4 i:iWiP __wait4 wait4@@GLIBC_2.1
# avoid 64-bit aliases on 32-bit statfs syscalls
fstatfs - fstatfs i:ip __fstatfs fstatfs
diff --git a/sysdeps/unix/sysv/linux/alpha/tv32-compat.h b/sysdeps/unix/sysv/linux/alpha/tv32-compat.h
new file mode 100644
index 0000000000..d0b4cdcef3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/tv32-compat.h
@@ -0,0 +1,112 @@
+/* Compatibility definitions for `struct timeval' with 32-bit time_t.
+ Copyright (C) 2019 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _TV32_COMPAT_H
+#define _TV32_COMPAT_H 1
+
+#include <features.h>
+
+#include <bits/types.h>
+#include <bits/types/time_t.h>
+#include <bits/types/struct_timeval.h>
+#include <bits/types/struct_timespec.h>
+#include <bits/types/struct_rusage.h>
+
+#include <stdint.h> // for INT32_MAX
+#include <string.h> // for memset
+
+#define TV_USEC_MAX 999999 // 10**6 - 1
+
+/* A version of 'struct timeval' with 32-bit time_t. */
+struct timeval32
+{
+ int32_t tv_sec;
+ int32_t tv_usec;
+};
+
+/* Structures containing 'struct timeval' with 32-bit time_t. */
+struct itimerval32
+{
+ struct timeval32 it_interval;
+ struct timeval32 it_value;
+};
+
+struct rusage32
+{
+ struct timeval32 ru_utime; /* user time used */
+ struct timeval32 ru_stime; /* system time used */
+ long ru_maxrss; /* maximum resident set size */
+ long ru_ixrss; /* integral shared memory size */
+ long ru_idrss; /* integral unshared data size */
+ long ru_isrss; /* integral unshared stack size */
+ long ru_minflt; /* page reclaims */
+ long ru_majflt; /* page faults */
+ long ru_nswap; /* swaps */
+ long ru_inblock; /* block input operations */
+ long ru_oublock; /* block output operations */
+ long ru_msgsnd; /* messages sent */
+ long ru_msgrcv; /* messages received */
+ long ru_nsignals; /* signals received */
+ long ru_nvcsw; /* voluntary context switches */
+ long ru_nivcsw; /* involuntary " */
+};
+
+/* Conversion functions. If the seconds field of a timeval32 would
+ overflow, they write { INT32_MAX, TV_USEC_MAX } to the output. */
+
+static inline struct timeval
+valid_timeval_to_timeval64 (const struct timeval32 tv)
+{
+ return (struct timeval) { tv.tv_sec, tv.tv_usec };
+}
+
+static inline struct timeval32
+valid_timeval64_to_timeval (const struct timeval tv64)
+{
+ if (__glibc_unlikely (tv64.tv_sec > (time_t) INT32_MAX))
+ return (struct timeval32) { INT32_MAX, TV_USEC_MAX};
+ return (struct timeval32) { tv64.tv_sec, tv64.tv_usec };
+}
+
+static inline void
+rusage64_to_rusage32 (struct rusage32 *restrict r32,
+ const struct rusage *restrict r64)
+{
+ /* Make sure the entire output structure is cleared, including
+ padding and reserved fields. */
+ memset (r32, 0, sizeof *r32);
+
+ r32->ru_utime = valid_timeval64_to_timeval (r64->ru_utime);
+ r32->ru_stime = valid_timeval64_to_timeval (r64->ru_stime);
+ r32->ru_maxrss = r64->ru_maxrss;
+ r32->ru_ixrss = r64->ru_ixrss;
+ r32->ru_idrss = r64->ru_idrss;
+ r32->ru_isrss = r64->ru_isrss;
+ r32->ru_minflt = r64->ru_minflt;
+ r32->ru_majflt = r64->ru_majflt;
+ r32->ru_nswap = r64->ru_nswap;
+ r32->ru_inblock = r64->ru_inblock;
+ r32->ru_oublock = r64->ru_oublock;
+ r32->ru_msgsnd = r64->ru_msgsnd;
+ r32->ru_msgrcv = r64->ru_msgrcv;
+ r32->ru_nsignals = r64->ru_nsignals;
+ r32->ru_nvcsw = r64->ru_nvcsw;
+ r32->ru_nivcsw = r64->ru_nivcsw;
+}
+
+#endif /* tv32-compat.h */
diff --git a/sysdeps/unix/sysv/linux/gettimeofday.c b/sysdeps/unix/sysv/linux/gettimeofday.c
index d69d4eaa96..c9597d6405 100644
--- a/sysdeps/unix/sysv/linux/gettimeofday.c
+++ b/sysdeps/unix/sysv/linux/gettimeofday.c
@@ -30,10 +30,20 @@
putting it into *tv and *tz. If tz is null, *tz is not filled.
Returns 0 on success, -1 on errors. */
int
-__gettimeofday (struct timeval *tv, struct timezone *tz)
+___gettimeofday (struct timeval *tv, struct timezone *tz)
{
return INLINE_VSYSCALL (gettimeofday, 2, tv, tz);
}
+
+#ifdef VERSION_gettimeofday
+weak_alias (___gettimeofday, __wgettimeofday);
+default_symbol_version (___gettimeofday, __gettimeofday, VERSION_gettimeofday);
+default_symbol_version (__wgettimeofday, gettimeofday, VERSION_gettimeofday);
+libc_hidden_ver (___gettimeofday, __gettimeofday);
+libc_hidden_ver (___gettimeofday, gettimeofday);
+#else
+strong_alias (___gettimeofday, __gettimeofday)
+weak_alias (___gettimeofday, gettimeofday)
libc_hidden_def (__gettimeofday)
-weak_alias (__gettimeofday, gettimeofday)
libc_hidden_weak (gettimeofday)
+#endif
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index e374f97b5f..cdcf6c127b 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -1,6 +1,5 @@
# File name Caller Syscall name Args Strong name Weak names
-adjtimex adjtime adjtimex i:p __adjtimex adjtimex ntp_adjtime
alarm - alarm i:i alarm
bdflush EXTRA bdflush i:ii __compat_bdflush bdflush@GLIBC_2.0:GLIBC_2.23
capget EXTRA capget i:pp capget