new file mode 100644
@@ -0,0 +1,275 @@
+/* Enqueue and list of read or write requests. Common code template.
+ Copyright (C) 1997-2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+/* The following macros must be defined before including this file:
+
+ LIO_LISTIO The public symbol (lio_listio or lio_listio64).
+ AIOCB Struct tag used by LIO_LISTIO (aiocb or aiocb64).
+ LIO_LISTIO_OLD The internal symbol for the compat implementation.
+ LIO_LISTIO_NEW The internal symbol for the current implementation.
+ LIO_OPCODE_BASE Opcode shift for 64-bit version with 32-bit word size.
+
+ For __WORDSIZE == 64, LIO_LISTIO must always be lio_listio, and
+ lio_listio64 is automatically defined as well. */
+
+#include <bits/wordsize.h>
+#if __WORDSIZE == 64
+/* We use an UGLY hack to prevent gcc from finding us cheating. The
+ implementation of lio_listio and lio_listio64 are identical and so
+ we want to avoid code duplication by using aliases. But gcc sees
+ the different parameter lists and prints a warning. We define here
+ a function so that lio_listio64 has no prototype. */
+# define lio_listio64 XXX
+# include <aio.h>
+/* And undo the hack. */
+# undef lio_listio64
+#else
+# include <aio.h>
+#endif
+
+#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <aio_misc.h>
+
+#include <shlib-compat.h>
+
+
+/* We need this special structure to handle asynchronous I/O. */
+struct async_waitlist
+ {
+ unsigned int counter;
+ struct sigevent sigev;
+ struct waitlist list[0];
+ };
+
+
+/* The code in glibc 2.1 to glibc 2.4 issued only one event when all
+ requests submitted with lio_listio finished. The existing practice
+ is to issue events for the individual requests as well. This is
+ what the new code does. */
+#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
+# define LIO_MODE(mode) ((mode) & 127)
+# define NO_INDIVIDUAL_EVENT_P(mode) ((mode) & 128)
+#else
+# define LIO_MODE(mode) mode
+# define NO_INDIVIDUAL_EVENT_P(mode) 0
+#endif
+
+
+static int
+lio_listio_internal (int mode, struct AIOCB *const list[], int nent,
+ struct sigevent *sig)
+{
+ struct sigevent defsigev;
+ struct requestlist *requests[nent];
+ int cnt;
+ volatile unsigned int total = 0;
+ int result = 0;
+
+ if (sig == NULL)
+ {
+ defsigev.sigev_notify = SIGEV_NONE;
+ sig = &defsigev;
+ }
+
+ /* Request the mutex. */
+ pthread_mutex_lock (&__aio_requests_mutex);
+
+ /* Now we can enqueue all requests. Since we already acquired the
+ mutex the enqueue function need not do this. */
+ for (cnt = 0; cnt < nent; ++cnt)
+ if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
+ {
+ if (NO_INDIVIDUAL_EVENT_P (mode))
+ list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
+
+ requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
+ (list[cnt]->aio_lio_opcode
+ | LIO_OPCODE_BASE));
+
+ if (requests[cnt] != NULL)
+ /* Successfully enqueued. */
+ ++total;
+ else
+ /* Signal that we've seen an error. `errno' and the error code
+ of the aiocb will tell more. */
+ result = -1;
+ }
+ else
+ requests[cnt] = NULL;
+
+ if (total == 0)
+ {
+ /* We don't have anything to do except signalling if we work
+ asynchronously. */
+
+ /* Release the mutex. We do this before raising a signal since the
+ signal handler might do a `siglongjmp' and then the mutex is
+ locked forever. */
+ pthread_mutex_unlock (&__aio_requests_mutex);
+
+ if (LIO_MODE (mode) == LIO_NOWAIT)
+ __aio_notify_only (sig);
+
+ return result;
+ }
+ else if (LIO_MODE (mode) == LIO_WAIT)
+ {
+#ifndef DONT_NEED_AIO_MISC_COND
+ pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+ int oldstate;
+#endif
+ struct waitlist waitlist[nent];
+
+ total = 0;
+ for (cnt = 0; cnt < nent; ++cnt)
+ {
+ assert (requests[cnt] == NULL || list[cnt] != NULL);
+
+ if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
+ {
+#ifndef DONT_NEED_AIO_MISC_COND
+ waitlist[cnt].cond = &cond;
+#endif
+ waitlist[cnt].result = &result;
+ waitlist[cnt].next = requests[cnt]->waiting;
+ waitlist[cnt].counterp = &total;
+ waitlist[cnt].sigevp = NULL;
+ requests[cnt]->waiting = &waitlist[cnt];
+ ++total;
+ }
+ }
+
+#ifdef DONT_NEED_AIO_MISC_COND
+ AIO_MISC_WAIT (result, total, NULL, 0);
+#else
+ /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancellation
+ points we must be careful. We added entries to the waiting lists
+ which we must remove. So defer cancellation for now. */
+ pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
+
+ while (total > 0)
+ pthread_cond_wait (&cond, &__aio_requests_mutex);
+
+ /* Now it's time to restore the cancellation state. */
+ pthread_setcancelstate (oldstate, NULL);
+
+ /* Release the conditional variable. */
+ if (pthread_cond_destroy (&cond) != 0)
+ /* This must never happen. */
+ abort ();
+#endif
+
+ /* If any of the I/O requests failed, return -1 and set errno. */
+ if (result != 0)
+ {
+ __set_errno (result == EINTR ? EINTR : EIO);
+ result = -1;
+ }
+ }
+ else
+ {
+ struct async_waitlist *waitlist;
+
+ waitlist = (struct async_waitlist *)
+ malloc (sizeof (struct async_waitlist)
+ + (nent * sizeof (struct waitlist)));
+
+ if (waitlist == NULL)
+ {
+ __set_errno (EAGAIN);
+ result = -1;
+ }
+ else
+ {
+ total = 0;
+
+ for (cnt = 0; cnt < nent; ++cnt)
+ {
+ assert (requests[cnt] == NULL || list[cnt] != NULL);
+
+ if (requests[cnt] != NULL
+ && list[cnt]->aio_lio_opcode != LIO_NOP)
+ {
+#ifndef DONT_NEED_AIO_MISC_COND
+ waitlist->list[cnt].cond = NULL;
+#endif
+ waitlist->list[cnt].result = NULL;
+ waitlist->list[cnt].next = requests[cnt]->waiting;
+ waitlist->list[cnt].counterp = &waitlist->counter;
+ waitlist->list[cnt].sigevp = &waitlist->sigev;
+ requests[cnt]->waiting = &waitlist->list[cnt];
+ ++total;
+ }
+ }
+
+ waitlist->counter = total;
+ waitlist->sigev = *sig;
+ }
+ }
+
+ /* Release the mutex. */
+ pthread_mutex_unlock (&__aio_requests_mutex);
+
+ return result;
+}
+
+
+#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
+int
+attribute_compat_text_section
+LIO_LISTIO_OLD (int mode, struct AIOCB *const list[], int nent,
+ struct sigevent *sig)
+{
+ /* Check arguments. */
+ if (mode != LIO_WAIT && mode != LIO_NOWAIT)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ return lio_listio_internal (mode | LIO_NO_INDIVIDUAL_EVENT, list, nent, sig);
+}
+compat_symbol (librt, LIO_LISTIO_OLD, LIO_LISTIO, GLIBC_2_1);
+# if __WORDSIZE == 64
+compat_symbol (librt, LIO_LISTIO_OLD, lio_listio64, GLIBC_2_1);
+# endif
+#endif /* SHLIB_COMPAT */
+
+
+int
+LIO_LISTIO_NEW (int mode, struct AIOCB *const list[], int nent,
+ struct sigevent *sig)
+{
+ /* Check arguments. */
+ if (mode != LIO_WAIT && mode != LIO_NOWAIT)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ return lio_listio_internal (mode, list, nent, sig);
+}
+versioned_symbol (librt, LIO_LISTIO_NEW, LIO_LISTIO, GLIBC_2_4);
+#if __WORDSIZE == 64
+versioned_symbol (librt, LIO_LISTIO_NEW, lio_listio64, GLIBC_2_4);
+#endif
@@ -1,7 +1,6 @@
/* Enqueue and list of read or write requests.
- Copyright (C) 1997-2021 Free Software Foundation, Inc.
+ Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -17,232 +16,10 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#ifndef lio_listio
-#include <aio.h>
-#include <assert.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <aio_misc.h>
-
+#define LIO_LISTIO lio_listio
+#define AIOCB aiocb
+#define LIO_LISTIO_OLD __lio_listio_21
+#define LIO_LISTIO_NEW __lio_listio_24
#define LIO_OPCODE_BASE 0
-#endif
-
-#include <shlib-compat.h>
-
-
-/* We need this special structure to handle asynchronous I/O. */
-struct async_waitlist
- {
- unsigned int counter;
- struct sigevent sigev;
- struct waitlist list[0];
- };
-
-
-/* The code in glibc 2.1 to glibc 2.4 issued only one event when all
- requests submitted with lio_listio finished. The existing practice
- is to issue events for the individual requests as well. This is
- what the new code does. */
-#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
-# define LIO_MODE(mode) ((mode) & 127)
-# define NO_INDIVIDUAL_EVENT_P(mode) ((mode) & 128)
-#else
-# define LIO_MODE(mode) mode
-# define NO_INDIVIDUAL_EVENT_P(mode) 0
-#endif
-
-
-static int
-lio_listio_internal (int mode, struct aiocb *const list[], int nent,
- struct sigevent *sig)
-{
- struct sigevent defsigev;
- struct requestlist *requests[nent];
- int cnt;
- volatile unsigned int total = 0;
- int result = 0;
-
- if (sig == NULL)
- {
- defsigev.sigev_notify = SIGEV_NONE;
- sig = &defsigev;
- }
-
- /* Request the mutex. */
- pthread_mutex_lock (&__aio_requests_mutex);
-
- /* Now we can enqueue all requests. Since we already acquired the
- mutex the enqueue function need not do this. */
- for (cnt = 0; cnt < nent; ++cnt)
- if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
- if (NO_INDIVIDUAL_EVENT_P (mode))
- list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
-
- requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
- (list[cnt]->aio_lio_opcode
- | LIO_OPCODE_BASE));
-
- if (requests[cnt] != NULL)
- /* Successfully enqueued. */
- ++total;
- else
- /* Signal that we've seen an error. `errno' and the error code
- of the aiocb will tell more. */
- result = -1;
- }
- else
- requests[cnt] = NULL;
-
- if (total == 0)
- {
- /* We don't have anything to do except signalling if we work
- asynchronously. */
-
- /* Release the mutex. We do this before raising a signal since the
- signal handler might do a `siglongjmp' and then the mutex is
- locked forever. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- if (LIO_MODE (mode) == LIO_NOWAIT)
- __aio_notify_only (sig);
-
- return result;
- }
- else if (LIO_MODE (mode) == LIO_WAIT)
- {
-#ifndef DONT_NEED_AIO_MISC_COND
- pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
- int oldstate;
-#endif
- struct waitlist waitlist[nent];
-
- total = 0;
- for (cnt = 0; cnt < nent; ++cnt)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
-#ifndef DONT_NEED_AIO_MISC_COND
- waitlist[cnt].cond = &cond;
-#endif
- waitlist[cnt].result = &result;
- waitlist[cnt].next = requests[cnt]->waiting;
- waitlist[cnt].counterp = &total;
- waitlist[cnt].sigevp = NULL;
- requests[cnt]->waiting = &waitlist[cnt];
- ++total;
- }
- }
-
-#ifdef DONT_NEED_AIO_MISC_COND
- AIO_MISC_WAIT (result, total, NULL, 0);
-#else
- /* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancellation
- points we must be careful. We added entries to the waiting lists
- which we must remove. So defer cancellation for now. */
- pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
-
- while (total > 0)
- pthread_cond_wait (&cond, &__aio_requests_mutex);
-
- /* Now it's time to restore the cancellation state. */
- pthread_setcancelstate (oldstate, NULL);
-
- /* Release the conditional variable. */
- if (pthread_cond_destroy (&cond) != 0)
- /* This must never happen. */
- abort ();
-#endif
-
- /* If any of the I/O requests failed, return -1 and set errno. */
- if (result != 0)
- {
- __set_errno (result == EINTR ? EINTR : EIO);
- result = -1;
- }
- }
- else
- {
- struct async_waitlist *waitlist;
-
- waitlist = (struct async_waitlist *)
- malloc (sizeof (struct async_waitlist)
- + (nent * sizeof (struct waitlist)));
-
- if (waitlist == NULL)
- {
- __set_errno (EAGAIN);
- result = -1;
- }
- else
- {
- total = 0;
-
- for (cnt = 0; cnt < nent; ++cnt)
- {
- assert (requests[cnt] == NULL || list[cnt] != NULL);
-
- if (requests[cnt] != NULL
- && list[cnt]->aio_lio_opcode != LIO_NOP)
- {
-#ifndef DONT_NEED_AIO_MISC_COND
- waitlist->list[cnt].cond = NULL;
-#endif
- waitlist->list[cnt].result = NULL;
- waitlist->list[cnt].next = requests[cnt]->waiting;
- waitlist->list[cnt].counterp = &waitlist->counter;
- waitlist->list[cnt].sigevp = &waitlist->sigev;
- requests[cnt]->waiting = &waitlist->list[cnt];
- ++total;
- }
- }
-
- waitlist->counter = total;
- waitlist->sigev = *sig;
- }
- }
-
- /* Release the mutex. */
- pthread_mutex_unlock (&__aio_requests_mutex);
-
- return result;
-}
-
-
-#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
-int
-attribute_compat_text_section
-__lio_listio_21 (int mode, struct aiocb *const list[], int nent,
- struct sigevent *sig)
-{
- /* Check arguments. */
- if (mode != LIO_WAIT && mode != LIO_NOWAIT)
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- return lio_listio_internal (mode | LIO_NO_INDIVIDUAL_EVENT, list, nent, sig);
-}
-compat_symbol (librt, __lio_listio_21, lio_listio, GLIBC_2_1);
-#endif
-
-
-int
-__lio_listio_item_notify (int mode, struct aiocb *const list[], int nent,
- struct sigevent *sig)
-{
- /* Check arguments. */
- if (mode != LIO_WAIT && mode != LIO_NOWAIT)
- {
- __set_errno (EINVAL);
- return -1;
- }
- return lio_listio_internal (mode, list, nent, sig);
-}
-versioned_symbol (librt, __lio_listio_item_notify, lio_listio, GLIBC_2_4);
+#include "lio_listio-common.c"
@@ -1,7 +1,6 @@
-/* Enqueue and list of read or write requests, 64bit offset version.
- Copyright (C) 1997-2021 Free Software Foundation, Inc.
+/* Enqueue and list of read or write requests.
+ Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -17,17 +16,13 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#include <aio.h>
-#include <assert.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <unistd.h>
+#include <bits/wordsize.h>
+#if __WORDSIZE != 64
+# define AIOCB aiocb64
+# define LIO_LISTIO lio_listio64
+# define LIO_LISTIO_OLD __lio_listio64_21
+# define LIO_LISTIO_NEW __lio_listio64_24
+# define LIO_OPCODE_BASE 128
-#include <aio_misc.h>
-
-#define lio_listio lio_listio64
-#define __lio_listio_21 __lio_listio64_21
-#define __lio_listio_item_notify __lio_listio64_item_notify
-#define aiocb aiocb64
-#define LIO_OPCODE_BASE 128
-#include <lio_listio.c>
+# include "lio_listio-common.c"
+#endif
deleted file mode 100644
@@ -1,13 +0,0 @@
-#define lio_listio64 __renamed_lio_listio64
-
-#include <rt/lio_listio.c>
-
-#undef lio_listio64
-
-#if SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_4)
-strong_alias (__lio_listio_21, __lio_listio64_21)
-compat_symbol (librt, __lio_listio64_21, lio_listio64, GLIBC_2_1);
-#endif
-
-strong_alias (__lio_listio_item_notify, __lio_listio64_item_notify)
-versioned_symbol (librt, __lio_listio64_item_notify, lio_listio64, GLIBC_2_4);
deleted file mode 100644
@@ -1 +0,0 @@
-/* Defined in lio_listio.c. */