--- /dev/null
+*.rej
+*.orig
+*~
+/*.patch
+
+*.o
+*.o[ls]
+
+/src/libaio.a
+/src/libaio.so*
--- /dev/null
+
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+
+
--- /dev/null
+0.3.107
+ - Make tests compile again on modern systems (warnings + -Werror)
+ - Add 'make partcheck' and don't require manual setup for testing.
+ - Change test harness to compile against this dir, not global install
+ - Fix 5.t for archs where PROT_WRITE mappings are readable.
+ - Allow sending of SIGXFSZ on aio over limits
+ - Explicitly specify bash for runtests.sh
+ - Put deprecating comments on never-merged io_prep_poll
+ - Add io_prep_preadv and io_prep_pwritev
+ - Add eventfd support (io_set_eventfd).
+
+0.4.0
+ - remove libredhat-kernel
+ - add rough outline for man pages
+ - make the compiled io_getevents() add the extra parameter and
+ pass the timeout for updating as per 2.5
+ - fixes for ia64, now works
+ - fixes for x86-64
+ - powerpc support from Gianni Tedesco <gianni@ecsc.co.uk>
+ - disable the NULL check in harness/cases/4.t on ia64: ia64
+ maps the 0 page and causes this check to fail.
+
+0.3.15
+ - use real syscall interface, but don't break source compatibility
+ yet (that will happen with 0.4.0)
+
+0.3.13
+ - add test cases
+
+0.3.11
+ - use library versioning of libredhat-kernel to always provide a
+ fallback
+
+0.3.9
+ - add io_queue_release function
+
+0.3.8
+ - make clean deletes libredhat-kernel.so.1
+ - const struct timespec *
+ - add make srpm target
+
+0.3.7
+ - fix assembly function .types
+ - export io_getevents
+ - fix io_submit function prototype to match the kernel
+ - provide /usr/lib/libredhat-kernel.so link for compilation
+ (do NOT link against libredhat-kernel.so directly)
+ - fix soname to libaio.so.1
+ - fix dummy libredhat-kernel's soname
+ - work around nfs bug
+ - provide and install libredhat-kernel.so.1 stub
+ - Makefile improvements
+ - make sure dummy libredhat-kernel.so only returns -ENOSYS
+
--- /dev/null
+To install the library, execute the command:
+
+ make prefix=`pwd`/usr install
+
+which will install the binaries and header files into the directory
+usr. Set prefix=/usr to get them installed into the main system.
+
+Please note: Do not attempt to install on the system the
+"libredhat-kernel.so" file. It is a dummy shared library
+provided only for the purpose of being able to bootstrap
+this facility while running on systems without the correct
+libredhat-kernel.so built. The contents of the included
+libredhat-kernel.so are only stubs; this library is NOT
+functional for anything except the internal purpose of
+linking libaio.so against the provided stubs. At runtime,
+libaio.so requires a real libredhat-kernel.so library; this
+is provided by the Red Hat kernel RPM packages with async
+I/O functionality.
--- /dev/null
+NAME=libaio
+SPECFILE=$(NAME).spec
+VERSION=$(shell awk '/Version:/ { print $$2 }' $(SPECFILE))
+RELEASE=$(shell awk '/Release:/ { print $$2 }' $(SPECFILE))
+CVSTAG = $(NAME)_$(subst .,-,$(VERSION))_$(subst .,-,$(RELEASE))
+RPMBUILD=$(shell `which rpmbuild >&/dev/null` && echo "rpmbuild" || echo "rpm")
+
+prefix=/usr
+includedir=$(prefix)/include
+libdir=$(prefix)/lib
+
+default: all
+
+all:
+ @$(MAKE) -C src
+
+install:
+ @$(MAKE) -C src install prefix=$(prefix) includedir=$(includedir) libdir=$(libdir)
+
+check:
+ @$(MAKE) -C harness check
+
+partcheck: all
+ @$(MAKE) -C harness partcheck
+
+clean:
+ @$(MAKE) -C src clean
+ @$(MAKE) -C harness clean
+
+tag-archive:
+ @cvs -Q tag -F $(CVSTAG)
+
+create-archive: tag-archive
+ @rm -rf /tmp/$(NAME)
+ @cd /tmp; cvs -Q -d $(CVSROOT) export -r$(CVSTAG) $(NAME) || echo GRRRrrrrr -- ignore [export aborted]
+ @mv /tmp/$(NAME) /tmp/$(NAME)-$(VERSION)
+ @cd /tmp; tar czSpf $(NAME)-$(VERSION).tar.gz $(NAME)-$(VERSION)
+ @rm -rf /tmp/$(NAME)-$(VERSION)
+ @cp /tmp/$(NAME)-$(VERSION).tar.gz .
+ @rm -f /tmp/$(NAME)-$(VERSION).tar.gz
+ @echo " "
+ @echo "The final archive is ./$(NAME)-$(VERSION).tar.gz."
+
+archive: clean tag-archive create-archive
+
+srpm: create-archive
+ $(RPMBUILD) --define "_sourcedir `pwd`" --define "_srcrpmdir `pwd`" --nodeps -bs $(SPECFILE)
--- /dev/null
+- Write man pages.
+- Make -static links against libaio work.
+- Fallback on userspace if the kernel calls return -ENOSYS.
+
--- /dev/null
+# foo.
+TEST_SRCS:=$(shell find cases/ -name \*.t | sort -n -t/ -k2)
+EXTRAPROGS:=cases/8.p cases/10.p
+PARTPROGS:=$(filter-out $(EXTRAPROGS), $(patsubst %.t,%.p,$(TEST_SRCS)))
+PROGS:=$(PARTPROGS) $(EXTRAPROGS)
+HARNESS_SRCS:=main.c
+# io_queue.c
+
+CFLAGS+=-Wall -Werror -I../src -g -O
+#-lpthread -lrt
+
+all: $(PROGS)
+
+$(PROGS): %.p: %.t $(HARNESS_SRCS)
+ $(CC) $(CFLAGS) -DTEST_NAME=\"$<\" -o $@ main.c ../src/libaio.a
+
+clean:
+ rm -f $(PROGS) *.o runtests.out rofile wofile rwfile
+
+.PHONY:
+
+testdir/rofile: testdir .PHONY
+ rm -f $@
+ echo "test" >$@
+ chmod 400 $@
+
+testdir/wofile: testdir .PHONY
+ rm -f $@
+ echo "test" >$@
+ chmod 200 $@
+
+testdir/rwfile: testdir .PHONY
+ rm -f $@
+ echo "test" >$@
+ chmod 600 $@
+
+testdir testdir.enospc testdir.ext2:
+ mkdir $@
+
+root: .PHONY
+ @if [ `id -u` -ne 0 ]; then echo Need root for check, try partcheck >&2; exit 1; fi
+
+partcheck: $(PARTPROGS) testdir/rofile testdir/rwfile testdir/wofile
+ ./runtests.sh $(PARTPROGS)
+
+ext2.img:
+ dd if=/dev/zero bs=1M count=10 of=$@
+ mke2fs -F -b 4096 $@
+
+extracheck: $(EXTRAPROGS) root testdir.ext2 testdir.enospc ext2.img
+ mount -o loop -t ext2 ext2-enospc.img testdir.enospc
+ ./runtests.sh cases/10.p; ret=$$?; umount testdir.enospc; exit $$ret
+ mount -o loop -t ext2 ext2.img testdir.ext2
+ ./runtests.sh cases/8.p; ret=$$?; umount testdir.ext2; exit $$ret
+
+check: partcheck extracheck
--- /dev/null
+Notes on running this test suite:
+
+To run the test suite, run "make check". All test cases should pass
+and there should be 0 fails.
+
+Several of the test cases require a directory on the filesystem under
+test for the creation of test files, as well as the generation of
+error conditions. The test cases assume the directories (or symlinks
+to directories) are as follows:
+
+ testdir/
+ - used for general read/write test cases. Must have at
+ least as much free space as the machine has RAM (up
+ to 768MB).
+ testdir.enospc/
+ - a filesystem that has space for writing 8KB out, but
+ fails with -ENOSPC beyond 8KB.
+ testdir.ext2/
+ - must be an ext2 filesystem.
--- /dev/null
+/* 0.t
+ Test harness check: okay.
+*/
+int test_main(void)
+{
+ printf("test_main: okay\n");
+ return 0;
+}
+
--- /dev/null
+/* 1.t
+ Test harness check: fail.
+*/
+int test_main(void)
+{
+ printf("test_main: fail\n");
+ return 1;
+}
+
--- /dev/null
+/* 10.t - uses testdir.enospc/rwfile
+- Check results on out-of-space and out-of-quota. (10.t)
+ - write that fills filesystem but does not go over should succeed
+ - write that fills filesystem and goes over should be partial
+ - write to full filesystem should return -ENOSPC
+ - read beyond end of file after ENOSPC should return 0
+*/
+#include "aio_setup.h"
+
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+int test_main(void)
+{
+/* Note: changing either of these requires updating the ext2-enospc.img
+ * filesystem image. Also, if SIZE is less than PAGE_SIZE, problems
+ * crop up due to ext2's preallocation.
+ */
+#define LIMIT 65536
+#define SIZE 65536
+ char *buf;
+ int rwfd;
+ int status = 0, res;
+
+ rwfd = open("testdir.enospc/rwfile", O_RDWR|O_CREAT|O_TRUNC, 0600);
+ assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ buf = malloc(SIZE); assert(buf != NULL);
+ memset(buf, 0, SIZE);
+
+
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT-SIZE, WRITE, SIZE);
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT-SIZE, READ, SIZE);
+
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT, WRITE, -ENOSPC);
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT, READ, 0);
+
+ res = ftruncate(rwfd, 0); assert(res == 0);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 1+LIMIT-SIZE, WRITE, SIZE-1);
+ status |= attempt_rw(rwfd, buf, SIZE, 1+LIMIT-SIZE, READ, SIZE-1);
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT, READ, 0);
+
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT, WRITE, -ENOSPC);
+ status |= attempt_rw(rwfd, buf, SIZE, LIMIT, READ, 0);
+ status |= attempt_rw(rwfd, buf, 0, LIMIT, WRITE, 0);
+
+ res = close(rwfd); assert(res == 0);
+ res = unlink("testdir.enospc/rwfile"); assert(res == 0);
+ return status;
+}
+
--- /dev/null
+/* 11.t - uses testdir/rwfile
+- repeated read / write of same page (to check accounting) (11.t)
+*/
+#include "aio_setup.h"
+
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+int test_main(void)
+{
+#define COUNT 1000000
+#define SIZE 256
+ char *buf;
+ int rwfd;
+ int status = 0;
+ int i;
+
+ rwfd = open("testdir/rwfile", O_RDWR|O_CREAT|O_TRUNC, 0600);
+ assert(rwfd != -1);
+ buf = malloc(SIZE); assert(buf != NULL);
+ memset(buf, 0, SIZE);
+
+ for (i=0; i<COUNT; i++) {
+ status |= attempt_rw(rwfd, buf, SIZE, 0, WRITE_SILENT, SIZE);
+ if (status)
+ break;
+ }
+ printf("completed %d out of %d writes\n", i, COUNT);
+ for (i=0; i<COUNT; i++) {
+ status |= attempt_rw(rwfd, buf, SIZE, 0, READ_SILENT, SIZE);
+ if (status)
+ break;
+ }
+ printf("completed %d out of %d reads\n", i, COUNT);
+
+ return status;
+}
+
--- /dev/null
+/* 12.t
+- ioctx access across fork() (12.t)
+ */
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include "aio_setup.h"
+
+void test_child(void)
+{
+ int res;
+ res = attempt_io_submit(io_ctx, 0, NULL, -EINVAL);
+ fflush(stdout);
+ _exit(res);
+}
+
+int test_main(void)
+{
+ int res, status;
+ pid_t pid;
+ sigset_t set;
+
+ if (attempt_io_submit(io_ctx, 0, NULL, 0))
+ return 1;
+
+ sigemptyset(&set);
+ sigaddset(&set, SIGCHLD);
+ sigprocmask(SIG_BLOCK, &set, NULL);
+
+ fflush(NULL);
+ pid = fork(); assert(pid != -1);
+
+ if (pid == 0)
+ test_child();
+
+ res = waitpid(pid, &status, 0);
+ if (res < 0) {
+ printf("waitpid error\n");
+ return res;
+ }
+
+ if (WIFEXITED(status)) {
+ int failed = (WEXITSTATUS(status) != 0);
+ printf("child exited with status %d%s\n", WEXITSTATUS(status),
+ failed ? " -- FAILED" : "");
+ return failed;
+ }
+
+ /* anything else: failed */
+ if (WIFSIGNALED(status))
+ printf("child killed by signal %d -- FAILED.\n",
+ WTERMSIG(status));
+
+ return 1;
+}
--- /dev/null
+/* 13.t - uses testdir/rwfile
+- Submit multiple writes larger than aio-max-size (deadlocks on older
+ aio code)
+*/
+#include "aio_setup.h"
+
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+int test_main(void)
+{
+#define SIZE (1024 * 1024)
+#define IOS 8
+ struct iocb iocbs[IOS];
+ struct iocb *iocb_list[IOS];
+ char *bufs[IOS];
+ int rwfd;
+ int status = 0, res;
+ int i;
+
+ rwfd = open("testdir/rwfile", O_RDWR|O_CREAT|O_TRUNC, 0600);
+ assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+
+ for (i=0; i<IOS; i++) {
+ bufs[i] = malloc(SIZE);
+ assert(bufs[i] != NULL);
+ memset(bufs[i], 0, SIZE);
+
+ io_prep_pwrite(&iocbs[i], rwfd, bufs[i], SIZE, i * SIZE);
+ iocb_list[i] = &iocbs[i];
+ }
+
+ status |= attempt_io_submit(io_ctx, IOS, iocb_list, IOS);
+
+ for (i=0; i<IOS; i++) {
+ struct timespec ts = { tv_sec: 30, tv_nsec: 0 };
+ struct io_event event;
+ struct iocb *iocb;
+
+ res = io_getevents(io_ctx, 0, 1, &event, &ts);
+ if (res != 1) {
+ status |= 1;
+ printf("io_getevents failed [%d] with res=%d [%s]\n",
+ i, res, (res < 0) ? strerror(-res) : "okay");
+ break;
+ }
+
+ if (event.res != SIZE)
+ status |= 1;
+
+ iocb = (void *)event.obj;
+ printf("event[%d]: write[%d] %s, returned: %ld [%s]\n",
+ i, (int)(iocb - &iocbs[0]),
+ (event.res != SIZE) ? "failed" : "okay",
+ (long)event.res,
+ (event.res < 0) ? strerror(-event.res) : "okay"
+ );
+ }
+
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ res = close(rwfd); assert(res == 0);
+ return status;
+}
+
--- /dev/null
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <signal.h>
+
+#include "aio_setup.h"
+#include <sys/mman.h>
+
+#define SIZE 768*1024*1024
+
+//just submit an I/O
+
+int test_child(void)
+{
+ char *buf;
+ int rwfd;
+ int res;
+ long size;
+ struct iocb iocb;
+ struct iocb *iocbs[] = { &iocb };
+ int loop = 10;
+ int i;
+
+ aio_setup(1024);
+
+ size = SIZE;
+
+ printf("size = %ld\n", size);
+
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd !=
+-1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ buf = malloc(size); assert(buf !=
+NULL);
+
+ for(i=0;i<loop;i++) {
+
+ switch(i%2) {
+ case 0:
+ io_prep_pwrite(&iocb, rwfd, buf, size, 0);
+ break;
+ case 1:
+ io_prep_pread(&iocb, rwfd, buf, size, 0);
+ }
+
+ res = io_submit(io_ctx, 1, iocbs);
+ if (res != 1) {
+ printf("child: submit: io_submit res=%d [%s]\n", res,
+strerror(-res));
+ _exit(1);
+ }
+ }
+
+ res = ftruncate(rwfd, 0); assert(res == 0);
+
+ _exit(0);
+}
+
+/* from 12.t */
+int test_main(void)
+{
+ int res, status;
+ pid_t pid;
+ sigset_t set;
+
+ if (attempt_io_submit(io_ctx, 0, NULL, 0))
+ return 1;
+
+ sigemptyset(&set);
+ sigaddset(&set, SIGCHLD);
+ sigprocmask(SIG_BLOCK, &set, NULL);
+ fflush(NULL);
+ pid = fork(); assert(pid != -1);
+
+ if (pid == 0)
+ test_child();
+
+ res = waitpid(pid, &status, 0);
+ if (res < 0) {
+ printf("waitpid error\n");
+ return res;
+ }
+
+ if (WIFEXITED(status)) {
+ int failed = (WEXITSTATUS(status) != 0);
+ printf("child exited with status %d%s\n", WEXITSTATUS(status),
+ failed ? " -- FAILED" : "");
+ return failed;
+ }
+
+ /* anything else: failed */
+ if (WIFSIGNALED(status))
+ printf("child killed by signal %d -- FAILED.\n",
+ WTERMSIG(status));
+
+ return 1;
+}
--- /dev/null
+/* 15.t
+- pwritev and preadv tests.
+*/
+#include "aio_setup.h"
+#include <sys/mman.h>
+#include <sys/uio.h>
+#include <errno.h>
+
+int test_main(void)
+{
+#define SIZE 512
+#define NUM_IOV 10
+ char buf[SIZE*NUM_IOV];
+ struct iovec iov[NUM_IOV];
+ int rwfd;
+ int status = 0, res, i;
+
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
+ res = ftruncate(rwfd, sizeof(buf)); assert(res == 0);
+
+ for (i = 0; i < NUM_IOV; i++) {
+ iov[i].iov_base = buf + i*SIZE;
+ iov[i].iov_len = SIZE;
+ memset(iov[i].iov_base, i, SIZE);
+ }
+ status |= attempt_rw(rwfd, iov, NUM_IOV, 0, WRITEV, SIZE*NUM_IOV);
+ res = pread(rwfd, buf, sizeof(buf), 0); assert(res == sizeof(buf));
+ for (i = 0; i < NUM_IOV; i++) {
+ unsigned int j;
+ for (j = 0; j < SIZE; j++) {
+ if (buf[i*SIZE + j] != i) {
+ printf("Unexpected value after writev at %i\n",
+ i*SIZE + j);
+ status |= 1;
+ break;
+ }
+ }
+ }
+ if (!status)
+ printf("Checking memory: [Success]\n");
+
+ memset(buf, 0, sizeof(buf));
+ status |= attempt_rw(rwfd, iov, NUM_IOV, 0, READV, SIZE*NUM_IOV);
+ for (i = 0; i < NUM_IOV; i++) {
+ unsigned int j;
+ for (j = 0; j < SIZE; j++) {
+ if (buf[i*SIZE + j] != i) {
+ printf("Unexpected value after readv at %i\n",
+ i*SIZE + j);
+ status |= 1;
+ break;
+ }
+ }
+ }
+
+ /* Check that offset works. */
+ status |= attempt_rw(rwfd, iov+1, NUM_IOV-1, SIZE, WRITEV,
+ SIZE*(NUM_IOV-1));
+ memset(buf, 0, sizeof(buf));
+ res = pread(rwfd, buf, sizeof(buf), 0); assert(res == sizeof(buf));
+ for (i = 1; i < NUM_IOV; i++) {
+ unsigned int j;
+ for (j = 0; j < SIZE; j++) {
+ if (buf[i*SIZE + j] != i) {
+ printf("Unexpected value after offset writev at %i\n",
+ i*SIZE + j);
+ status |= 1;
+ break;
+ }
+ }
+ }
+ if (!status)
+ printf("Checking memory: [Success]\n");
+
+ memset(buf, 0, sizeof(buf));
+ status |= attempt_rw(rwfd, iov+1, NUM_IOV-1, SIZE, READV,
+ SIZE*(NUM_IOV-1));
+ for (i = 1; i < NUM_IOV; i++) {
+ unsigned int j;
+ for (j = 0; j < SIZE; j++) {
+ if (buf[i*SIZE + j] != i) {
+ printf("Unexpected value after offset readv at %i\n",
+ i*SIZE + j);
+ status |= 1;
+ break;
+ }
+ }
+ }
+ if (!status)
+ printf("Checking memory: [Success]\n");
+
+ return status;
+}
+
--- /dev/null
+/* 16.t
+- eventfd tests.
+*/
+#include <stdint.h>
+#include <err.h>
+#include <sys/syscall.h> /* For SYS_xxx definitions */
+
+#ifndef SYS_eventfd
+#if defined(__i386__)
+#define SYS_eventfd 323
+#elif defined(__x86_64__)
+#define SYS_eventfd 284
+#elif defined(__ia64__)
+#define SYS_eventfd 1309
+#elif defined(__PPC__)
+#define SYS_eventfd 307
+#elif defined(__s390__)
+#define SYS_eventfd 318
+#elif defined(__alpha__)
+#define SYS_eventfd 478
+#elif defined(__aarch64__)
+/* arm64 does not implement eventfd, only eventfd2 */
+#define USE_EVENTFD2
+#ifndef SYS_eventfd2
+#define SYS_eventfd2 19
+#endif /* __aarch64__ */
+#else
+#error define SYS_eventfd for your arch!
+#endif
+#endif
+
+int test_main(void)
+{
+ /* 10 MB takes long enough that we would fail if eventfd
+ * returned immediately. */
+#define SIZE 10000000
+ char *buf;
+ struct io_event io_event;
+ struct iocb iocb;
+ struct iocb *iocbs[] = { &iocb };
+ int rwfd, efd;
+ int res;
+ io_context_t io_ctx;
+ uint64_t event;
+ struct timespec notime = { .tv_sec = 0, .tv_nsec = 0 };
+
+ buf = malloc(SIZE); assert(buf);
+#ifndef USE_EVENTFD2
+ efd = syscall(SYS_eventfd, 0);
+#else
+ efd = syscall(SYS_eventfd2, 0, 0);
+#endif
+ if (efd < 0) {
+ if (errno == ENOSYS) {
+ printf("No eventfd support. [SKIPPING]\n");
+ exit(0);
+ }
+ err(1, "Failed to get eventfd");
+ }
+
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ memset(buf, 0x42, SIZE);
+
+ /* Write test. */
+ res = io_queue_init(1024, &io_ctx); assert(res == 0);
+ io_prep_pwrite(&iocb, rwfd, buf, SIZE, 0);
+ io_set_eventfd(&iocb, efd);
+ res = io_submit(io_ctx, 1, iocbs); assert(res == 1);
+
+ alarm(30);
+ res = read(efd, &event, sizeof(event)); assert(res == sizeof(event));
+ assert(event == 1);
+
+ /* This should now be ready. */
+ res = io_getevents(io_ctx, 0, 1, &io_event, ¬ime);
+ if (res != 1)
+ err(1, "io_getevents did not return 1 event after eventfd");
+ assert(io_event.res == SIZE);
+ printf("eventfd write test [SUCCESS]\n");
+
+ /* Read test. */
+ memset(buf, 0, SIZE);
+ io_prep_pread(&iocb, rwfd, buf, SIZE, 0);
+ io_set_eventfd(&iocb, efd);
+ res = io_submit(io_ctx, 1, iocbs); assert(res == 1);
+
+ alarm(30);
+ res = read(efd, &event, sizeof(event)); assert(res == sizeof(event));
+ assert(event == 1);
+
+ /* This should now be ready. */
+ res = io_getevents(io_ctx, 0, 1, &io_event, ¬ime);
+ if (res != 1)
+ err(1, "io_getevents did not return 1 event after eventfd");
+ assert(io_event.res == SIZE);
+
+ for (res = 0; res < SIZE; res++)
+ assert(buf[res] == 0x42);
+ printf("eventfd read test [SUCCESS]\n");
+
+ return 0;
+}
+
--- /dev/null
+/* 2.t
+- io_setup (#2)
+ - with invalid context pointer
+ - with maxevents <= 0
+ - with an already initialized ctxp
+*/
+
+int attempt(int n, io_context_t *ctxp, int expect)
+{
+ int res;
+
+ printf("expect %3d: io_setup(%5d, %p) = ", expect, n, ctxp);
+ fflush(stdout);
+ res = io_setup(n, ctxp);
+ printf("%3d [%s]%s\n", res, strerror(-res),
+ (res != expect) ? " -- FAILED" : "");
+ if (res != expect)
+ return 1;
+
+ return 0;
+}
+
+int test_main(void)
+{
+ io_context_t ctx;
+ int status = 0;
+
+ ctx = NULL;
+ status |= attempt(-1000, KERNEL_RW_POINTER, -EFAULT);
+ status |= attempt( 1000, KERNEL_RW_POINTER, -EFAULT);
+ status |= attempt( 0, KERNEL_RW_POINTER, -EFAULT);
+ status |= attempt(-1000, &ctx, -EINVAL);
+ status |= attempt( -1, &ctx, -EINVAL);
+ status |= attempt( 0, &ctx, -EINVAL);
+ assert(ctx == NULL);
+ status |= attempt( 1, &ctx, 0);
+ status |= attempt( 1, &ctx, -EINVAL);
+
+ return status;
+}
+
--- /dev/null
+/* 3.t
+- io_submit/io_getevents with invalid addresses (3.t)
+
+*/
+#include "aio_setup.h"
+
+int test_main(void)
+{
+ struct iocb a, b;
+ struct iocb *good_ios[] = { &a, &b };
+ struct iocb *bad1_ios[] = { NULL, &b };
+ struct iocb *bad2_ios[] = { KERNEL_RW_POINTER, &a };
+ int status = 0;
+
+ status |= attempt_io_submit(BAD_CTX, 1, good_ios, -EINVAL);
+ status |= attempt_io_submit( io_ctx, 0, good_ios, 0);
+ status |= attempt_io_submit( io_ctx, 1, NULL, -EFAULT);
+ status |= attempt_io_submit( io_ctx, 1, (void *)-1, -EFAULT);
+ status |= attempt_io_submit( io_ctx, 2, bad1_ios, -EFAULT);
+ status |= attempt_io_submit( io_ctx, 2, bad2_ios, -EFAULT);
+ status |= attempt_io_submit( io_ctx, -1, good_ios, -EINVAL);
+
+ return status;
+}
+
--- /dev/null
+/* 4.t
+- read of descriptor without read permission (4.t)
+- write to descriptor without write permission (4.t)
+- check that O_APPEND writes actually append
+
+*/
+#include "aio_setup.h"
+
+#define SIZE 512
+#define READ 'r'
+#define WRITE 'w'
+int attempt(int fd, void *buf, int count, long long pos, int rw, int expect)
+{
+ struct iocb iocb;
+ int res;
+
+ switch(rw) {
+ case READ: io_prep_pread (&iocb, fd, buf, count, pos); break;
+ case WRITE: io_prep_pwrite(&iocb, fd, buf, count, pos); break;
+ }
+
+ printf("expect %3d: (%c), res = ", expect, rw);
+ fflush(stdout);
+ res = sync_submit(&iocb);
+ printf("%3d [%s]%s\n", res, (res <= 0) ? strerror(-res) : "Success",
+ (res != expect) ? " -- FAILED" : "");
+ if (res != expect)
+ return 1;
+
+ return 0;
+}
+
+int test_main(void)
+{
+ char buf[SIZE];
+ int rofd, wofd, rwfd;
+ int status = 0, res;
+
+ memset(buf, 0, SIZE);
+
+ rofd = open("testdir/rofile", O_RDONLY); assert(rofd != -1);
+ wofd = open("testdir/wofile", O_WRONLY); assert(wofd != -1);
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
+
+ status |= attempt(rofd, buf, SIZE, 0, WRITE, -EBADF);
+ status |= attempt(wofd, buf, SIZE, 0, READ, -EBADF);
+ status |= attempt(rwfd, buf, SIZE, 0, WRITE, SIZE);
+ status |= attempt(rwfd, buf, SIZE, 0, READ, SIZE);
+ status |= attempt(rwfd, buf, SIZE, -1, READ, -EINVAL);
+ status |= attempt(rwfd, buf, SIZE, -1, WRITE, -EINVAL);
+
+ rwfd = open("testdir/rwfile", O_RDWR|O_APPEND); assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ status |= attempt(rwfd, buf, SIZE, 0, READ, 0);
+ status |= attempt(rwfd, "1234", 4, 0, WRITE, 4);
+ status |= attempt(rwfd, "5678", 4, 0, WRITE, 4);
+ memset(buf, 0, SIZE);
+ status |= attempt(rwfd, buf, SIZE, 0, READ, 8);
+ printf("read after append: [%s]\n", buf);
+ assert(memcmp(buf, "12345678", 8) == 0);
+
+ status |= attempt(rwfd, KERNEL_RW_POINTER, SIZE, 0, READ, -EFAULT);
+ status |= attempt(rwfd, KERNEL_RW_POINTER, SIZE, 0, WRITE, -EFAULT);
+
+ /* Some architectures map the 0 page. Ugh. */
+#if !defined(__ia64__)
+ status |= attempt(rwfd, NULL, SIZE, 0, WRITE, -EFAULT);
+#endif
+
+ return status;
+}
+
--- /dev/null
+/* 5.t
+- Write from a mmap() of the same file. (5.t)
+*/
+#include "aio_setup.h"
+#include <sys/mman.h>
+#include <errno.h>
+
+int test_main(void)
+{
+ int page_size = getpagesize();
+#define SIZE 512
+ char *buf;
+ int rwfd;
+ int status = 0, res;
+
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
+ res = ftruncate(rwfd, 512); assert(res == 0);
+
+ buf = mmap(0, page_size, PROT_READ|PROT_WRITE, MAP_SHARED, rwfd, 0);
+ assert(buf != (char *)-1);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 0, WRITE, SIZE);
+ status |= attempt_rw(rwfd, buf, SIZE, 0, READ, SIZE);
+
+ res = munmap(buf, page_size); assert(res == 0);
+ buf = mmap(0, page_size, PROT_READ|PROT_WRITE, MAP_SHARED, rwfd, 0);
+ assert(buf != (char *)-1);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 0, READ, SIZE);
+ status |= attempt_rw(rwfd, buf, SIZE, 0, WRITE, SIZE);
+
+ res = munmap(buf, page_size); assert(res == 0);
+ buf = mmap(0, page_size, PROT_READ, MAP_SHARED, rwfd, 0);
+ assert(buf != (char *)-1);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 0, WRITE, SIZE);
+ status |= attempt_rw(rwfd, buf, SIZE, 0, READ, -EFAULT);
+
+ res = munmap(buf, page_size); assert(res == 0);
+ buf = mmap(0, page_size, PROT_WRITE, MAP_SHARED, rwfd, 0);
+ assert(buf != (char *)-1);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 0, READ, SIZE);
+
+ /* Whether PROT_WRITE is readable is arch-dependent. So compare
+ * against read result. */
+ res = read(rwfd, buf, SIZE);
+ if (res < 0)
+ res = -errno;
+ status |= attempt_rw(rwfd, buf, SIZE, 0, WRITE, res);
+
+ return status;
+}
+
--- /dev/null
+/* 6.t
+- huge reads (pinned pages) (6.t)
+- huge writes (6.t)
+*/
+#include "aio_setup.h"
+#include <sys/mman.h>
+
+long getmemsize(void)
+{
+ FILE *f = fopen("/proc/meminfo", "r");
+ long size;
+ int gotit = 0;
+ char str[256];
+
+ assert(f != NULL);
+ while (NULL != fgets(str, 255, f)) {
+ str[255] = 0;
+ if (0 == memcmp(str, "MemTotal:", 9)) {
+ if (1 == sscanf(str + 9, "%ld", &size)) {
+ gotit = 1;
+ break;
+ }
+ }
+ }
+ fclose(f);
+
+ assert(gotit != 0);
+ return size;
+}
+
+int test_main(void)
+{
+ char *buf;
+ int rwfd;
+ int status = 0, res;
+ long size;
+
+ size = getmemsize();
+ printf("size = %ld\n", size);
+ assert(size >= (16 * 1024));
+ if (size > (768 * 1024))
+ size = 768 * 1024;
+ size *= 1024;
+
+ rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ buf = malloc(size); assert(buf != NULL);
+
+ //memset(buf, 0, size);
+ status |= attempt_rw(rwfd, buf, size, 0, WRITE, size);
+ status |= attempt_rw(rwfd, buf, size, 0, READ, size);
+
+ //res = ftruncate(rwfd, 0); assert(res == 0);
+
+ return status;
+}
+
--- /dev/null
+/* 7.t
+- Write overlapping the file size rlimit boundary: should be a short
+ write. (7.t)
+- Write at the file size rlimit boundary: should give EFBIG. (I think
+ the spec requires that you do NOT deliver SIGXFSZ in this case, where
+ you would do so for sync IO.) (7.t)
+- Special case: a write of zero bytes at or beyond the file size rlimit
+ boundary must return success. (7.t)
+*/
+
+#include <sys/resource.h>
+#include <signal.h>
+
+void SET_RLIMIT(long long limit)
+{
+ struct rlimit rlim;
+ int res;
+
+ /* Seems that we do send SIGXFSZ, but hard to fix... */
+ signal(SIGXFSZ, SIG_IGN);
+ rlim.rlim_cur = limit; assert(rlim.rlim_cur == limit);
+ rlim.rlim_max = limit; assert(rlim.rlim_max == limit);
+
+ res = setrlimit(RLIMIT_FSIZE, &rlim); assert(res == 0);
+}
+
+#define LIMIT 8192
+#define FILENAME "testdir/rwfile"
+
+#include "common-7-8.h"
--- /dev/null
+/* 8.t
+- Ditto for the above three tests at the offset maximum (largest
+ possible ext2/3 file size.) (8.t)
+ */
+#include <sys/types.h>
+#include <unistd.h>
+
+long long get_fs_limit(int fd)
+{
+ long long min = 0, max = 9223372036854775807LL;
+ char c = 0;
+
+ while (max - min > 1) {
+ if (pwrite64(fd, &c, 1, (min + max) / 2) == -1)
+ max = (min + max) / 2;
+ else {
+ ftruncate(fd, 0);
+ min = (min + max) / 2;
+ }
+ }
+ return max;
+}
+
+#define SET_RLIMIT(x) do ; while (0)
+#define LIMIT get_fs_limit(rwfd)
+#define FILENAME "testdir.ext2/rwfile"
+
+#include "common-7-8.h"
--- /dev/null
+#include <time.h>
+io_context_t io_ctx;
+#define BAD_CTX ((io_context_t)-1)
+
+void aio_setup(int n)
+{
+ int res = io_queue_init(n, &io_ctx);
+ if (res != 0) {
+ printf("io_queue_setup(%d) returned %d (%s)\n",
+ n, res, strerror(-res));
+ exit(3);
+ }
+}
+
+int attempt_io_submit(io_context_t ctx, long nr, struct iocb *ios[], int expect)
+{
+ int res;
+
+ printf("expect %3d: io_submit(%10p, %3ld, %10p) = ", expect, ctx, nr, ios);
+ fflush(stdout);
+ res = io_submit(ctx, nr, ios);
+ printf("%3d [%s]%s\n", res, (res <= 0) ? strerror(-res) : "",
+ (res != expect) ? " -- FAILED" : "");
+ if (res != expect)
+ return 1;
+
+ return 0;
+}
+
+int sync_submit(struct iocb *iocb)
+{
+ struct io_event event;
+ struct iocb *iocbs[] = { iocb };
+ int res;
+
+ /* 30 second timeout should be enough */
+ struct timespec ts;
+ ts.tv_sec = 30;
+ ts.tv_nsec = 0;
+
+ res = io_submit(io_ctx, 1, iocbs);
+ if (res != 1) {
+ printf("sync_submit: io_submit res=%d [%s]\n", res, strerror(-res));
+ return res;
+ }
+
+ res = io_getevents(io_ctx, 0, 1, &event, &ts);
+ if (res != 1) {
+ printf("sync_submit: io_getevents res=%d [%s]\n", res, strerror(-res));
+ return res;
+ }
+ return event.res;
+}
+
+#define SETUP aio_setup(1024)
+
+
+#define READ 'r'
+#define WRITE 'w'
+#define READ_SILENT 'R'
+#define WRITE_SILENT 'W'
+#define READV '<'
+#define WRITEV '>'
+
+int attempt_rw(int fd, void *buf, int count, long long pos, int rw, int expect)
+{
+ struct iocb iocb;
+ int res;
+ int silent = 0;
+
+ switch(rw) {
+ case READ_SILENT:
+ silent = 1;
+ case READ:
+ io_prep_pread (&iocb, fd, buf, count, pos);
+ break;
+ case WRITE_SILENT:
+ silent = 1;
+ case WRITE:
+ io_prep_pwrite(&iocb, fd, buf, count, pos);
+ break;
+ case WRITEV:
+ io_prep_pwritev(&iocb, fd, buf, count, pos);
+ break;
+ case READV:
+ io_prep_preadv(&iocb, fd, buf, count, pos);
+ break;
+ }
+
+ if (!silent) {
+ printf("expect %5d: (%c), res = ", expect, rw);
+ fflush(stdout);
+ }
+ res = sync_submit(&iocb);
+ if (!silent || res != expect) {
+ if (silent)
+ printf("expect %5d: (%c), res = ", expect, rw);
+ printf("%5d [%s]%s\n", res,
+ (res <= 0) ? strerror(-res) : "Success",
+ (res != expect) ? " -- FAILED" : "");
+ }
+
+ if (res != expect)
+ return 1;
+
+ return 0;
+}
+
--- /dev/null
+/* common-7-8.h
+*/
+#include "aio_setup.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+#define SIZE 512
+
+int test_main(void)
+{
+ char *buf;
+ int rwfd;
+ int status = 0, res;
+ long long limit;
+
+ rwfd = open(FILENAME, O_RDWR|O_CREAT, 0600); assert(rwfd != -1);
+ res = ftruncate(rwfd, 0); assert(res == 0);
+ buf = malloc(SIZE); assert(buf != NULL);
+ memset(buf, 0, SIZE);
+
+ limit = LIMIT;
+
+ SET_RLIMIT(limit);
+
+ status |= attempt_rw(rwfd, buf, SIZE, limit-SIZE, WRITE, SIZE);
+ status |= attempt_rw(rwfd, buf, SIZE, limit-SIZE, READ, SIZE);
+
+ status |= attempt_rw(rwfd, buf, SIZE, 1+limit-SIZE, WRITE, SIZE-1);
+ status |= attempt_rw(rwfd, buf, SIZE, 1+limit-SIZE, READ, SIZE-1);
+
+ status |= attempt_rw(rwfd, buf, SIZE, limit, WRITE, -EFBIG);
+ status |= attempt_rw(rwfd, buf, SIZE, limit, READ, 0);
+ status |= attempt_rw(rwfd, buf, 0, limit, WRITE, 0);
+
+ return status;
+}
+
--- /dev/null
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <libaio.h>
+
+#if __LP64__ == 0
+#define KERNEL_RW_POINTER ((void *)0xc0010000)
+#else
+//#warning Not really sure where kernel memory is. Guessing.
+#define KERNEL_RW_POINTER ((void *)0xffffffff81000000)
+#endif
+
+
+char test_name[] = TEST_NAME;
+
+#include TEST_NAME
+
+int main(void)
+{
+ int res;
+
+#if defined(SETUP)
+ SETUP;
+#endif
+
+ res = test_main();
+ printf("test %s completed %s.\n", test_name,
+ res ? "FAILED" : "PASSED"
+ );
+ fflush(stdout);
+ return res ? 1 : 0;
+}
--- /dev/null
+#!/bin/bash
+
+passes=0
+fails=0
+
+echo "Test run starting at" `date`
+
+while [ $# -ge 1 ] ; do
+ this_test=$1
+ shift
+ echo "Starting $this_test"
+ $this_test 2>&1
+ res=$?
+ if [ $res -eq 0 ] ; then str="" ; passes=$[passes + 1] ; else str=" -- FAILED" ; fails=$[fails + 1] ; fi
+ echo "Completed $this_test with $res$str".
+done
+
+echo "Pass: $passes Fail: $fails"
+echo "Test run complete at" `date`
--- /dev/null
+Name: libaio
+Version: 0.3.110
+Release: 1
+Summary: Linux-native asynchronous I/O access library
+License: LGPL
+Group: System Environment/Libraries
+Source: %{name}-%{version}.tar.gz
+BuildRoot: %{_tmppath}/%{name}-root
+# Fix ExclusiveArch as we implement this functionality on more architectures
+ExclusiveArch: i386 x86_64 ia64 s390 s390x ppc ppc64 ppc64pseries ppc64iseries alpha alphaev6 %{arm}
+
+%description
+The Linux-native asynchronous I/O facility ("async I/O", or "aio") has a
+richer API and capability set than the simple POSIX async I/O facility.
+This library, libaio, provides the Linux-native API for async I/O.
+The POSIX async I/O facility requires this library in order to provide
+kernel-accelerated async I/O capabilities, as do applications which
+require the Linux-native async I/O API.
+
+%package devel
+Summary: Development files for Linux-native asynchronous I/O access
+Group: Development/System
+Requires: libaio
+Provides: libaio.so.1
+
+%description devel
+This package provides header files to include and libraries to link with
+for the Linux-native asynchronous I/O facility ("async I/O", or "aio").
+
+%prep
+%setup
+
+%build
+make
+
+%install
+[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT
+
+make install prefix=$RPM_BUILD_ROOT/usr \
+ libdir=$RPM_BUILD_ROOT/%{_libdir} \
+ root=$RPM_BUILD_ROOT
+
+%clean
+[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT
+
+%post -p /sbin/ldconfig
+
+%postun -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root)
+%attr(0755,root,root) %{_libdir}/libaio.so.*
+%doc COPYING TODO
+
+%files devel
+%defattr(-,root,root)
+%attr(0644,root,root) %{_includedir}/*
+%attr(0755,root,root) %{_libdir}/libaio.so
+%attr(0644,root,root) %{_libdir}/libaio.a
+
+%changelog
+* Fri Jul 5 2013 Jeff Moyer <jmoyer@redhat.com> - 0.3.110-1
+- Add suport for sparc and arm64 (Mike Frysinger and Jeff Moyer)
+- Add generic syscall fallbacks (Mike Frysinger)
+- Update man pages (Jeff Moyer and Cyril Hrubis)
+- Build system fixes (Mike Frysinger)
+
+* Tue Jun 9 2009 Jeff Moyer <jmoyer@redhat.com> - 0.3.108-1
+- add ARM architecture support (grabbed from Debian arches tree)
+- replace check of __i386__ with __LP64__ in test harness (Jeff Moyer)
+- change the .spec's copyright tag to license
+
+* Wed Jan 9 2008 Jeff Moyer <jmoyer@redhat.com> - 0.3.107-1
+- Fix the test harness (Rusty Russell)
+- Add eventfd support (Rusty Russell)
+
+* Tue Jan 3 2006 Jeff Moyer <jmoyer@redhat.com> - 0.3.106-1
+- Add a .proc directive for the ia64_aio_raw_syscall macro. This sounds a lot
+ like the previous entry, but that one fixed the __ia64_raw_syscall macro,
+ located in syscall-ia64.h. This macro is in raw_syscall.c, which pretty much
+ only exists for ia64. This bug prevented the package from building with
+ newer version of gcc.
+
+* Mon Aug 1 2005 Jeff Moyer <jmoyer@redhat.com> - 0.3.105-1
+- Add a .proc directive for the ia64 raw syscall macro.
+
+* Fri Apr 1 2005 Jeff Moyer <jmoyer@redhat.com> - 0.3.104-1
+- Add Alpha architecture support. (Sergey Tikhonov <tsv@solvo.ru>)
+
+* Tue Jan 25 2005 Jeff Moyer <jmoyer@redhat.com> - 0.3.103-1
+- Fix SONAME breakage. In changing file names around, I also changed the
+ SONAME, which is a no no.
+
+* Thu Oct 14 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.102-1
+- S390 asm had a bug; I forgot to update the clobber list. Lucky for me,
+ newer compilers complain about such things.
+- Also update the s390 asm to look more like the new kernel variants.
+
+* Wed Oct 13 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.101-1
+- Revert syscall return values to be -ERRNO. This was an inadvertant bug
+ introduced when clobber lists changed.
+- add ppc64pseries and ppc64iseries to exclusivearch
+
+* Tue Sep 14 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.100-1
+- Switch around the tests for _PPC_ and _powerpc64_ so that the ppc64
+ platforms get the right padding.
+
+* Wed Jul 14 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.99-4
+- Ok, there was a race in moving the cvs module. Someone rebuild from
+ the old cvs into fc3. *sigh* bumping rev.
+
+* Wed Jul 14 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.99-3
+- Actually provide libaio.so.1.
+
+* Tue Mar 30 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.99-2
+- Apparently the 0.3.93 patch was not meant for 0.3.96. Backed it out.
+
+* Tue Mar 30 2004 Jeff Moyer <jmoyer@redhat.com> - 0.3.99-1
+- Fix compat calls.
+- make library .so.1.0.0 and make symlinks properly.
+- Fix header file for inclusion in c++ code.
+
+* Thu Feb 26 2004 Jeff Moyer <jmoyer@redhat.com> 0.3.98-2
+- bah. fix version nr in changelog.
+
+* Thu Feb 26 2004 Jeff Moyer <jmoyer@redhat.com> 0.3.98-1
+- fix compiler warnings.
+
+* Thu Feb 26 2004 Jeff Moyer <jmoyer@redhat.com> 0.3.97-2
+- make srpm was using rpm to do a build. changed that to use rpmbuild if
+ it exists, and fallback to rpm if it doesn't.
+
+* Tue Feb 24 2004 Jeff Moyer <jmoyer@redhat.com> 0.3.97-1
+- Use libc syscall(2) instead of rolling our own calling mechanism. This
+ change is inspired due to a failure to build with newer gcc, since clobber
+ lists were wrong.
+- Add -fpic to the CFLAGS for all architectures. Should address bz #109457.
+- change a #include from <linux/types.h> to <sys/types.h>. Fixes a build
+ issue on s390.
+
+* Wed Jul 7 2003 Bill Nottingham <notting@redhat.com> 0.3.96-3
+- fix paths on lib64 arches
+
+* Wed Jun 18 2003 Michael K. Johnson <johnsonm@redhat.com> 0.3.96-2
+- optimization in io_getevents from Arjan van de Ven in 0.3.96-1
+- deal with ia64 in 0.3.96-2
+
+* Wed May 28 2003 Michael K. Johnson <johnsonm@redhat.com> 0.3.95-1
+- ppc bugfix from Julie DeWandel
+
+* Tue May 20 2003 Michael K. Johnson <johnsonm@redhat.com> 0.3.94-1
+- symbol versioning fix from Ulrich Drepper
+
+* Mon Jan 27 2003 Benjamin LaHaise <bcrl@redhat.com>
+- bump to 0.3.93-3 for rebuild.
+
+* Mon Dec 16 2002 Benjamin LaHaise <bcrl@redhat.com>
+- libaio 0.3.93 test release
+- add powerpc support from Gianni Tedesco <gianni@ecsc.co.uk>
+- add s/390 support from Arnd Bergmann <arnd@bergmann-dalldorf.de>
+
+* Fri Sep 12 2002 Benjamin LaHaise <bcrl@redhat.com>
+- libaio 0.3.92 test release
+- build on x86-64
+
+* Thu Sep 12 2002 Benjamin LaHaise <bcrl@redhat.com>
+- libaio 0.3.91 test release
+- build on ia64
+- remove libredhat-kernel from the .spec file
+
+* Thu Sep 5 2002 Benjamin LaHaise <bcrl@redhat.com>
+- libaio 0.3.90 test release
+
+* Mon Apr 29 2002 Benjamin LaHaise <bcrl@redhat.com>
+- add requires initscripts >= 6.47-1 to get boot time libredhat-kernel
+ linkage correct.
+- typo fix
+
+* Thu Apr 25 2002 Benjamin LaHaise <bcrl@redhat.com>
+- make /usr/lib/libredhat-kernel.so point to /lib/libredhat-kernel.so.1.0.0
+
+* Mon Apr 15 2002 Tim Powers <timp@redhat.com>
+- make the post scriptlet not use /bin/sh
+
+* Sat Apr 12 2002 Benjamin LaHaise <bcrl@redhat.com>
+- add /lib/libredhat-kernel* to %files.
+
+* Fri Apr 12 2002 Benjamin LaHaise <bcrl@redhat.com>
+- make the dummy install as /lib/libredhat-kernel.so.1.0.0 so
+ that ldconfig will link against it if no other is installed.
+
+* Tue Jan 22 2002 Benjamin LaHaise <bcrl@redhat.com>
+- add io_getevents
+
+* Tue Jan 22 2002 Michael K. Johnson <johnsonm@redhat.com>
+- Make linker happy with /usr/lib symlink for libredhat-kernel.so
+
+* Mon Jan 21 2002 Michael K. Johnson <johnsonm@redhat.com>
+- Added stub library
+
+* Sun Jan 20 2002 Michael K. Johnson <johnsonm@redhat.com>
+- Initial packaging
--- /dev/null
+.TH io 3 2002-09-12 "Linux 2.4" Linux IO"
+.SH NAME
+io \- Asynchronous IO
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.sp
+.br
+.B #include <libio.h>
+.sp
+.fi
+.SH DESCRIPTION
+The libaio library defines a new set of I/O operations which can
+significantly reduce the time an application spends waiting at I/O. The
+new functions allow a program to initiate one or more I/O operations and
+then immediately resume normal work while the I/O operations are
+executed in parallel.
+
+These functions are part of the library with realtime functions named
+.IR "libaio"
+. They are not actually part of the
+.IR "libc"
+binary.
+The implementation of these functions can be done using support in the
+kernel.
+
+All IO operations operate on files which were opened previously. There
+might be arbitrarily many operations running for one file. The
+asynchronous I/O operations are controlled using a data structure named
+.IR "struct iocb"
+It is defined in
+.IR "libio.h"
+as follows.
+
+.nf
+
+typedef struct io_context *io_context_t;
+
+typedef enum io_iocb_cmd {
+ IO_CMD_PREAD = 0,
+ IO_CMD_PWRITE = 1,
+
+ IO_CMD_FSYNC = 2,
+ IO_CMD_FDSYNC = 3,
+
+ IO_CMD_POLL = 5,
+ IO_CMD_NOOP = 6,
+} io_iocb_cmd_t;
+
+struct io_iocb_common {
+ void *buf;
+ unsigned __pad1;
+ long nbytes;
+ unsigned __pad2;
+ long long offset;
+ long long __pad3, __pad4;
+}; /* result code is the amount read or -'ve errno */
+
+
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+ union {
+ struct io_iocb_common c;
+ struct io_iocb_vector v;
+ struct io_iocb_poll poll;
+ struct io_iocb_sockaddr saddr;
+ } u;
+};
+
+
+.fi
+.TP
+.IR "int aio_fildes"
+This element specifies the file descriptor to be used for the
+operation. It must be a legal descriptor, otherwise the operation will
+fail.
+
+The device on which the file is opened must allow the seek operation.
+I.e., it is not possible to use any of the IO operations on devices
+like terminals where an
+.IR "lseek"
+call would lead to an error.
+.TP
+.IR "long u.c.offset"
+This element specifies the offset in the file at which the operation (input
+or output) is performed. Since the operations are carried out in arbitrary
+order and more than one operation for one file descriptor can be
+started, one cannot expect a current read/write position of the file
+descriptor.
+.TP
+.IR "void *buf"
+This is a pointer to the buffer with the data to be written or the place
+where the read data is stored.
+.TP
+.IR "long u.c.nbytes"
+This element specifies the length of the buffer pointed to by
+.IR "io_buf"
+.
+.TP
+.IR "int aio_reqprio"
+Is not currently used.
+.TP
+.B "IO_CMD_PREAD"
+Start a read operation. Read from the file at position
+.IR "u.c.offset"
+and store the next
+.IR "u.c.nbytes"
+bytes in the
+buffer pointed to by
+.IR "buf"
+.
+.TP
+.B "IO_CMD_PWRITE"
+Start a write operation. Write
+.IR "u.c.nbytes"
+bytes starting at
+.IR "buf"
+into the file starting at position
+.IR "u.c.offset"
+.
+.TP
+.B "IO_CMD_NOP"
+Do nothing for this control block. This value is useful sometimes when
+an array of
+.IR "struct iocb"
+values contains holes, i.e., some of the
+values must not be handled although the whole array is presented to the
+.IR "io_submit"
+function.
+.TP
+.B "IO_CMD_FSYNC"
+.TP
+.B "IO_CMD_POLL"
+This is experimental.
+.SH EXAMPLE
+.nf
+/*
+ * Simplistic version of copy command using async i/o
+ *
+ * From: Stephen Hemminger <shemminger@osdl.org>
+ * Copy file by using a async I/O state machine.
+ * 1. Start read request
+ * 2. When read completes turn it into a write request
+ * 3. When write completes decrement counter and free resources
+ *
+ *
+ * Usage: aiocp file(s) desination
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <libaio.h>
+
+#define AIO_BLKSIZE (64*1024)
+#define AIO_MAXIO 32
+
+static int busy = 0; // # of I/O's in flight
+static int tocopy = 0; // # of blocks left to copy
+static int dstfd = -1; // destination file descriptor
+static const char *dstname = NULL;
+static const char *srcname = NULL;
+
+
+/* Fatal error handler */
+static void io_error(const char *func, int rc)
+{
+ if (rc == -ENOSYS)
+ fprintf(stderr, "AIO not in this kernel\n");
+ else if (rc < 0 && -rc < sys_nerr)
+ fprintf(stderr, "%s: %s\n", func, sys_errlist[-rc]);
+ else
+ fprintf(stderr, "%s: error %d\n", func, rc);
+
+ if (dstfd > 0)
+ close(dstfd);
+ if (dstname)
+ unlink(dstname);
+ exit(1);
+}
+
+/*
+ * Write complete callback.
+ * Adjust counts and free resources
+ */
+static void wr_done(io_context_t ctx, struct iocb *iocb, long res, long res2)
+{
+ if (res2 != 0) {
+ io_error("aio write", res2);
+ }
+ if (res != iocb->u.c.nbytes) {
+ fprintf(stderr, "write missed bytes expect %d got %d\n", iocb->u.c.nbytes, res2);
+ exit(1);
+ }
+ --tocopy;
+ --busy;
+ free(iocb->u.c.buf);
+
+ memset(iocb, 0xff, sizeof(iocb)); // paranoia
+ free(iocb);
+ write(2, "w", 1);
+}
+
+/*
+ * Read complete callback.
+ * Change read iocb into a write iocb and start it.
+ */
+static void rd_done(io_context_t ctx, struct iocb *iocb, long res, long res2)
+{
+ /* library needs accessors to look at iocb? */
+ int iosize = iocb->u.c.nbytes;
+ char *buf = iocb->u.c.buf;
+ off_t offset = iocb->u.c.offset;
+
+ if (res2 != 0)
+ io_error("aio read", res2);
+ if (res != iosize) {
+ fprintf(stderr, "read missing bytes expect %d got %d\n", iocb->u.c.nbytes, res);
+ exit(1);
+ }
+
+
+ /* turn read into write */
+ io_prep_pwrite(iocb, dstfd, buf, iosize, offset);
+ io_set_callback(iocb, wr_done);
+ if (1 != (res = io_submit(ctx, 1, &iocb)))
+ io_error("io_submit write", res);
+ write(2, "r", 1);
+}
+
+
+int main(int argc, char *const *argv)
+{
+ int srcfd;
+ struct stat st;
+ off_t length = 0, offset = 0;
+ io_context_t myctx;
+
+ if (argc != 3 || argv[1][0] == '-') {
+ fprintf(stderr, "Usage: aiocp SOURCE DEST");
+ exit(1);
+ }
+ if ((srcfd = open(srcname = argv[1], O_RDONLY)) < 0) {
+ perror(srcname);
+ exit(1);
+ }
+ if (fstat(srcfd, &st) < 0) {
+ perror("fstat");
+ exit(1);
+ }
+ length = st.st_size;
+
+ if ((dstfd = open(dstname = argv[2], O_WRONLY | O_CREAT, 0666)) < 0) {
+ close(srcfd);
+ perror(dstname);
+ exit(1);
+ }
+
+ /* initialize state machine */
+ memset(&myctx, 0, sizeof(myctx));
+ io_queue_init(AIO_MAXIO, &myctx);
+ tocopy = howmany(length, AIO_BLKSIZE);
+
+ while (tocopy > 0) {
+ int i, rc;
+ /* Submit as many reads as once as possible upto AIO_MAXIO */
+ int n = MIN(MIN(AIO_MAXIO - busy, AIO_MAXIO / 2),
+ howmany(length - offset, AIO_BLKSIZE));
+ if (n > 0) {
+ struct iocb *ioq[n];
+
+ for (i = 0; i < n; i++) {
+ struct iocb *io = (struct iocb *) malloc(sizeof(struct iocb));
+ int iosize = MIN(length - offset, AIO_BLKSIZE);
+ char *buf = (char *) malloc(iosize);
+
+ if (NULL == buf || NULL == io) {
+ fprintf(stderr, "out of memory\n");
+ exit(1);
+ }
+
+ io_prep_pread(io, srcfd, buf, iosize, offset);
+ io_set_callback(io, rd_done);
+ ioq[i] = io;
+ offset += iosize;
+ }
+
+ rc = io_submit(myctx, n, ioq);
+ if (rc < 0)
+ io_error("io_submit", rc);
+
+ busy += n;
+ }
+
+ // Handle IO's that have completed
+ rc = io_queue_run(myctx);
+ if (rc < 0)
+ io_error("io_queue_run", rc);
+
+ // if we have maximum number of i/o's in flight
+ // then wait for one to complete
+ if (busy == AIO_MAXIO) {
+ rc = io_queue_wait(myctx, NULL);
+ if (rc < 0)
+ io_error("io_queue_wait", rc);
+ }
+
+ }
+
+ close(srcfd);
+ close(dstfd);
+ exit(0);
+}
+
+/*
+ * Results look like:
+ * [alanm@toolbox ~/MOT3]$ ../taio kernel-source-2.4.8-0.4g.ppc.rpm abc
+ * rrrrrrrrrrrrrrrwwwrwrrwwrrwrwwrrwrwrwwrrwrwrrrrwwrwwwrrwrrrwwwwwwwwwwwwwwwww
+ * rrrrrrrrrrrrrrwwwrrwrwrwrwrrwwwwwwwwwwwwwwrrrrrrrrrrrrrrrrrrwwwwrwrwwrwrwrwr
+ * wrrrrrrrwwwwwwwwwwwwwrrrwrrrwrrwrwwwwwwwwwwrrrrwwrwrrrrrrrrrrrwwwwwwwwwwwrww
+ * wwwrrrrrrrrwwrrrwwrwrwrwwwrrrrrrrwwwrrwwwrrwrwwwwwwwwrrrrrrrwwwrrrrrrrwwwwww
+ * wwwwwwwrwrrrrrrrrwrrwrrwrrwrwrrrwrrrwrrrwrwwwwwwwwwwwwwwwwwwrrrwwwrrrrrrrrrr
+ * rrwrrrrrrwrrwwwwwwwwwwwwwwwwrwwwrrwrwwrrrrrrrrrrrrrrrrrrrwwwwwwwwwwwwwwwwwww
+ * rrrrrwrrwrwrwrrwrrrwwwwwwwwrrrrwrrrwrwwrwrrrwrrwrrrrwwwwwwwrwrwwwwrwwrrrwrrr
+ * rrrwwwwwwwrrrrwwrrrrrrrrrrrrwrwrrrrwwwwwwwwwwwwwwrwrrrrwwwwrwrrrrwrwwwrrrwww
+ * rwwrrrrrrrwrrrrrrrrrrrrwwwwrrrwwwrwrrwwwwwwwwwwwwwwwwwwwwwrrrrrrrwwwwwwwrw
+ */
+.fi
+.SH "SEE ALSO"
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+.TH io_cancel 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_cancel \- Cancel io requests
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.sp
+.br
+.B #include <libaio.h>
+.sp
+.br
+.BI "int io_cancel(io_context_t ctx, struct iocb *iocb)"
+.br
+.sp
+struct iocb {
+ void *data; /* Return in the io completion event */
+ unsigned key; /* For use in identifying io requests */
+ short aio_lio_opcode;
+ short aio_reqprio; /* Not used */
+ int aio_fildes;
+};
+.fi
+.SH DESCRIPTION
+Attempts to cancel an iocb previously passed to io_submit. If
+the operation is successfully cancelled, the resulting event is
+copied into the memory pointed to by result without being placed
+into the completion queue.
+.PP
+When one or more requests are asynchronously processed, it might be
+useful in some situations to cancel a selected operation, e.g., if it
+becomes obvious that the written data is no longer accurate and would
+have to be overwritten soon. As an example, assume an application, which
+writes data in files in a situation where new incoming data would have
+to be written in a file which will be updated by an enqueued request.
+.SH "RETURN VALUES"
+0 is returned on success , otherwise returns Errno.
+.SH ERRORS
+.TP
+.B EFAULT
+If any of the data structures pointed to are invalid.
+.TP
+.B EINVAL
+If aio_context specified by ctx_id is
+invalid.
+.TP
+.B EAGAIN
+If the iocb specified was not
+cancelled.
+.TP
+.B ENOSYS
+if not implemented.
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./" static inline int io_fsync(io_context_t ctx, struct iocb *iocb, io_callback_t cb, int fd)
+./" {
+./" io_prep_fsync(iocb, fd);
+./" io_set_callback(iocb, cb);
+./" return io_submit(ctx, 1, &iocb);
+./" }
+.TH io_fsync 3 2002-09-12 "Linux 2.4" Linux AIO"
+.SH NAME
+io_fsync \- Synchronize a file's complete in-core state with that on disk
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.sp
+.br
+.B #include <libaio.h>
+.sp
+.br
+.BI "int io_fsync(io_context_t ctx, struct iocb *iocb, io_callback_t cb, int fd)"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.sp
+typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);
+.sp
+.fi
+.SH DESCRIPTION
+When dealing with asynchronous operations it is sometimes necessary to
+get into a consistent state. This would mean for AIO that one wants to
+know whether a certain request or a group of request were processed.
+This could be done by waiting for the notification sent by the system
+after the operation terminated, but this sometimes would mean wasting
+resources (mainly computation time).
+.PP
+Calling this function forces all I/O operations operating queued at the
+time of the function call operating on the file descriptor
+.IR "iocb->io_fildes"
+into the synchronized I/O completion state . The
+.IR "io_fsync"
+function returns
+immediately but the notification through the method described in
+.IR "io_callback"
+will happen only after all requests for this
+file descriptor have terminated and the file is synchronized. This also
+means that requests for this very same file descriptor which are queued
+after the synchronization request are not affected.
+.SH "RETURN VALUES"
+Returns 0, otherwise returns errno.
+.SH ERRORS
+.TP
+.B EFAULT
+.I iocbs
+referenced data outside of the program's accessible address space.
+.TP
+.B EINVAL
+.I ctx
+refers to an unitialized aio context, the iocb pointed to by
+.I iocbs
+contains an improperly initialized iocb,
+.TP
+.B EBADF
+The iocb contains a file descriptor that does not exist.
+.TP
+.B EINVAL
+The file specified in the iocb does not support the given io operation.
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_getevents(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./"/* io_getevents:
+./" * Attempts to read at least min_nr events and up to nr events from
+./" * the completion queue for the aio_context specified by ctx_id. May
+./" * fail with -EINVAL if ctx_id is invalid, if min_nr is out of range,
+./" * if nr is out of range, if when is out of range. May fail with
+./" * -EFAULT if any of the memory specified to is invalid. May return
+./" * 0 or < min_nr if no events are available and the timeout specified
+./" * by when has elapsed, where when == NULL specifies an infinite
+./" * timeout. Note that the timeout pointed to by when is relative and
+./" * will be updated if not NULL and the operation blocks. Will fail
+./" * with -ENOSYS if not implemented.
+./" */
+./"asmlinkage long sys_io_getevents(io_context_t ctx_id,
+./" long min_nr,
+./" long nr,
+./" struct io_event *events,
+./" struct timespec *timeout)
+./"
+.TH io_getevents 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_getevents \- Read resulting events from io requests
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.sp
+.br
+.B #include <libaio.h>
+.br
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.sp
+struct io_event {
+ unsigned PADDED(data, __pad1);
+ unsigned PADDED(obj, __pad2);
+ unsigned PADDED(res, __pad3);
+ unsigned PADDED(res2, __pad4);
+};
+.sp
+.BI "int io_getevents(io_context_t " ctx ", long " nr ", struct io_event *" events "[], struct timespec *" timeout ");"
+
+.fi
+.SH DESCRIPTION
+Attempts to read up to nr events from
+the completion queue for the aio_context specified by ctx.
+.SH "RETURN VALUES"
+May return
+0 if no events are available and the timeout specified
+by when has elapsed, where when == NULL specifies an infinite
+timeout. Note that the timeout pointed to by when is relative and
+will be updated if not NULL and the operation blocks. Will fail
+with ENOSYS if not implemented.
+.SH ERRORS
+.TP
+.B EINVAL
+if ctx_id is invalid, if min_nr is out of range,
+if nr is out of range, if when is out of range.
+.TP
+.B EFAULT
+if any of the memory specified to is invalid.
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./" static inline void io_prep_fsync(struct iocb *iocb, int fd)
+./" {
+./" memset(iocb, 0, sizeof(*iocb));
+./" iocb->aio_fildes = fd;
+./" iocb->aio_lio_opcode = IO_CMD_FSYNC;
+./" iocb->aio_reqprio = 0;
+./" }
+.TH io_prep_fsync 3 2002-09-12 "Linux 2.4" Linux AIO"
+.SH NAME
+io_prep_fsync \- Synchronize a file's complete in-core state with that on disk
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "static inline void io_prep_fsync(struct iocb *iocb, int fd)"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.sp
+.fi
+.SH DESCRIPTION
+This is an inline convenience function for setting up an iocbv for a FSYNC request.
+.br
+The file for which
+.TP
+.IR "iocb->aio_fildes = fd"
+is a descriptor is set up with
+the command
+.TP
+.IR "iocb->aio_lio_opcode = IO_CMD_FSYNC:
+.
+.PP
+The io_prep_fsync() function shall set up an IO_CMD_FSYNC operation
+to asynchronously force all I/O
+operations associated with the file indicated by the file
+descriptor aio_fildes member of the iocb structure referenced by
+the iocb argument and queued at the time of the call to
+io_submit() to the synchronized I/O completion state. The function
+call shall return when the synchronization request has been
+initiated or queued to the file or device (even when the data
+cannot be synchronized immediately).
+
+All currently queued I/O operations shall be completed as if by a call
+to fsync(); that is, as defined for synchronized I/O file
+integrity completion. If the
+operation queued by io_prep_fsync() fails, then, as for fsync(),
+outstanding I/O operations are not guaranteed to have
+been completed.
+
+If io_prep_fsync() succeeds, then it is only the I/O that was queued
+at the time of the call to io_submit() that is guaranteed to be
+forced to the relevant completion state. The completion of
+subsequent I/O on the file descriptor is not guaranteed to be
+completed in a synchronized fashion.
+.PP
+This function returns immediately . To schedule the operation, the
+function
+.IR io_submit
+must be called.
+.PP
+Simultaneous asynchronous operations using the same iocb produce
+undefined results.
+.SH "RETURN VALUES"
+None
+.SH ERRORS
+None
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./" static inline void io_prep_pread(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+./" {
+./" memset(iocb, 0, sizeof(*iocb));
+./" iocb->aio_fildes = fd;
+./" iocb->aio_lio_opcode = IO_CMD_PREAD;
+./" iocb->aio_reqprio = 0;
+./" iocb->u.c.buf = buf;
+./" iocb->u.c.nbytes = count;
+./" iocb->u.c.offset = offset;
+./" }
+.TH io_prep_pread 3 2002-09-12 "Linux 2.4" Linux AIO"
+.SH NAME
+io_prep_pread \- Set up asynchronous read
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.sp
+.br
+.B #include <libaio.h>
+.br
+.sp
+.BI "inline void io_prep_pread(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.fi
+.SH DESCRIPTION
+.IR io_prep_pread
+is an inline convenience function designed to facilitate the initialization of
+the iocb for an asynchronous read operation.
+
+The first
+.TP
+.IR "iocb->u.c.nbytes = count"
+bytes of the file for which
+.TP
+.IR "iocb->aio_fildes = fd"
+is a descriptor are written to the buffer
+starting at
+.TP
+.IR "iocb->u.c.buf = buf"
+.
+.br
+Reading starts at the absolute position
+.TP
+.IR "ioc->u.c.offset = offset"
+in the file.
+.PP
+This function returns immediately . To schedule the operation, the
+function
+.IR io_submit
+must be called.
+.PP
+Simultaneous asynchronous operations using the same iocb produce
+undefined results.
+.SH "RETURN VALUES"
+None
+.SH ERRORS
+None
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./" static inline void io_prep_pwrite(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+./" {
+./" memset(iocb, 0, sizeof(*iocb));
+./" iocb->aio_fildes = fd;
+./" iocb->aio_lio_opcode = IO_CMD_PWRITE;
+./" iocb->aio_reqprio = 0;
+./" iocb->u.c.buf = buf;
+./" iocb->u.c.nbytes = count;
+./" iocb->u.c.offset = offset;
+./" }
+.TH io_prep_pwrite 3 2002-09-12 "Linux 2.4" Linux AIO"
+.SH NAME
+io_prep_pwrite \- Set up iocb for asynchronous writes
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "inline void io_prep_pwrite(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.fi
+.SH DESCRIPTION
+io_prep_write is a convenicence function for setting up parallel writes.
+
+The first
+.TP
+.IR "iocb->u.c.nbytes = count"
+bytes of the file for which
+.TP
+.IR "iocb->aio_fildes = fd"
+is a descriptor are written from the buffer
+starting at
+.TP
+.IR "iocb->u.c.buf = buf"
+.
+.br
+Writing starts at the absolute position
+.TP
+.IR "ioc->u.c.offset = offset"
+in the file.
+.PP
+This function returns immediately . To schedule the operation, the
+function
+.IR io_submit
+must be called.
+.PP
+Simultaneous asynchronous operations using the same iocb produce
+undefined results.
+.SH "RETURN VALUES"
+None
+.SH ERRORS
+None
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+.TH io_queue_init 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_queue_init \- Initialize asynchronous io state machine
+
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "int io_queue_init(int maxevents, io_context_t *ctx );"
+.sp
+.fi
+.SH DESCRIPTION
+.B io_queue_init
+Attempts to create an aio context capable of receiving at least
+.IR maxevents
+events.
+.IR ctx
+must point to an aio context that already exists and must be initialized
+to
+.IR 0
+before the call.
+If the operation is successful, *cxtp is filled with the resulting handle.
+.SH "RETURN VALUES"
+On success,
+.B io_queue_init
+returns 0. Otherwise, -error is return, where
+error is one of the Exxx values defined in the Errors section.
+.SH ERRORS
+.TP
+.B EFAULT
+.I iocbs
+referenced data outside of the program's accessible address space.
+.TP
+.B EINVAL
+.I maxevents
+is <= 0 or
+.IR ctx
+is an invalid memory locattion.
+.TP
+.B ENOSYS
+Not implemented
+.TP
+.B EAGAIN
+.IR "maxevents > max_aio_reqs"
+where max_aio_reqs is a tunable value.
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+.TH io_queue_release 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_queue_release \- Release the context associated with the userspace handle
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.br
+.B #include <libaio.h>
+.br
+.sp
+.BI "int io_queue_release(io_context_t ctx)"
+.sp
+.SH DESCRIPTION
+.B io_queue_release
+destroys the context associated with the userspace handle. May cancel any outstanding
+AIOs and block on completion.
+
+.B cts.
+.SH "RETURN VALUES"
+On success,
+.B io_queue_release
+returns 0. Otherwise, -error is return, where
+error is one of the Exxx values defined in the Errors section.
+.SH ERRORS
+.TP
+.B EINVAL
+.I ctx
+refers to an unitialized aio context, the iocb pointed to by
+.I iocbs
+contains an improperly initialized iocb,
+.TP
+.B ENOSYS
+Not implemented
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
+
--- /dev/null
+.TH io_queue_run 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_queue_run \- Handle completed io requests
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "int io_queue_run(io_context_t ctx );"
+.sp
+.fi
+.SH DESCRIPTION
+.B io_queue_run
+Attempts to read all the events events from
+the completion queue for the aio_context specified by ctx_id.
+.SH "RETURN VALUES"
+May return
+0 if no events are available.
+Will fail with -ENOSYS if not implemented.
+.SH ERRORS
+.TP
+.B EFAULT
+.I iocbs
+referenced data outside of the program's accessible address space.
+.TP
+.B EINVAL
+.I ctx
+refers to an unitialized aio context, the iocb pointed to by
+.I iocbs
+contains an improperly initialized iocb,
+.TP
+.B ENOSYS
+Not implemented
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+.TH io_queue_wait 2 2002-09-03 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_queue_wait \- Wait for io requests to complete
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "int io_queue_wait(io_context_t ctx, const struct timespec *timeout);"
+.fi
+.SH DESCRIPTION
+Attempts to read an event from
+the completion queue for the aio_context specified by ctx_id.
+.SH "RETURN VALUES"
+May return
+0 if no events are available and the timeout specified
+by when has elapsed, where when == NULL specifies an infinite
+timeout. Note that the timeout pointed to by when is relative and
+will be updated if not NULL and the operation blocks. Will fail
+with -ENOSYS if not implemented.
+.SH "RETURN VALUES"
+On success,
+.B io_queue_wait
+returns 0. Otherwise, -error is return, where
+error is one of the Exxx values defined in the Errors section.
+.SH ERRORS
+.TP
+.B EFAULT
+.I iocbs
+referenced data outside of the program's accessible address space.
+.TP
+.B EINVAL
+.I ctx
+refers to an unitialized aio context, the iocb pointed to by
+.I iocbs
+contains an improperly initialized iocb,
+.TP
+.B ENOSYS
+Not implemented
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_set_callback(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./"\ 3static inline void io_set_callback(struct iocb *iocb, io_callback_t cb)
+.TH io_set_callback 3 2002-09-12 "Linux 2.4" Linux AIO"
+.SH NAME
+io_set_callback \- Set up io completion callback function
+.SH SYNOPSYS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "static inline void io_set_callback(struct iocb *iocb, io_callback_t cb)"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.sp
+typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);
+.sp
+.fi
+.SH DESCRIPTION
+The callback is not done if the caller uses raw events from
+io_getevents, only with the library helpers
+.SH "RETURN VALUES"
+.SH ERRORS
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_submit(3),
+.BR errno(3)
--- /dev/null
+./"/* sys_io_submit:
+./" * Queue the nr iocbs pointed to by iocbpp for processing. Returns
+./" * the number of iocbs queued. May return -EINVAL if the aio_context
+./" * specified by ctx_id is invalid, if nr is < 0, if the iocb at
+./" * *iocbpp[0] is not properly initialized, if the operation specified
+./" * is invalid for the file descriptor in the iocb. May fail with
+./" * -EFAULT if any of the data structures point to invalid data. May
+./" * fail with -EBADF if the file descriptor specified in the first
+./" * iocb is invalid. May fail with -EAGAIN if insufficient resources
+./" * are available to queue any iocbs. Will return 0 if nr is 0. Will
+./" * fail with -ENOSYS if not implemented.
+./" */
+.TH io_submit 2 2002-09-02 "Linux 2.4" "Linux AIO"
+.SH NAME
+io_submit \- Submit io requests
+.SH SYNOPSIS
+.nf
+.B #include <errno.h>
+.br
+.sp
+.B #include <libaio.h>
+.br
+.sp
+.BI "int io_submit(io_context_t " ctx ", long " nr ", struct iocb *" iocbs "[]);"
+.sp
+struct iocb {
+ void *data;
+ unsigned key;
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+};
+.fi
+.SH DESCRIPTION
+.B io_submit
+submits
+.I nr
+iocbs for processing for a given io context ctx.
+
+The
+.IR "io_submit"
+function can be used to enqueue an arbitrary
+number of read and write requests at one time. The requests can all be
+meant for the same file, all for different files or every solution in
+between.
+
+.IR "io_submit"
+gets the
+.IR "nr"
+requests from the array pointed to
+by
+.IR "iocbs"
+. The operation to be performed is determined by the
+.IR "aio_lio_opcode"
+member in each element of
+.IR "iocbs"
+. If this
+field is
+.B "IO_CMD_PREAD"
+a read operation is enqueued, similar to a call
+of
+.IR "io_prep_pread"
+for this element of the array (except that the way
+the termination is signalled is different, as we will see below). If
+the
+.IR "aio_lio_opcode"
+member is
+.B "IO_CMD_PWRITE"
+a write operation
+is enqueued. Otherwise the
+.IR "aio_lio_opcode"
+must be
+.B "IO_CMD_NOP"
+in which case this element of
+.IR "iocbs"
+is simply ignored. This
+``operation'' is useful in situations where one has a fixed array of
+.IR "struct iocb"
+elements from which only a few need to be handled at
+a time. Another situation is where the
+.IR "io_submit"
+call was
+canceled before all requests are processed and the remaining requests have to be reissued.
+
+The other members of each element of the array pointed to by
+.IR "iocbs"
+must have values suitable for the operation as described in
+the documentation for
+.IR "io_prep_pread"
+and
+.IR "io_prep_pwrite"
+above.
+
+The function returns immediately after
+having enqueued all the requests.
+On success,
+.B io_submit
+returns the number of iocbs submitted successfully. Otherwise, -error is return, where
+error is one of the Exxx values defined in the Errors section.
+.PP
+If an error is detected, then the behavior is undefined.
+.PP
+Simultaneous asynchronous operations using the same iocb produce
+undefined results.
+.SH ERRORS
+.TP
+.B EFAULT
+.I iocbs
+referenced data outside of the program's accessible address space.
+.TP
+.B EINVAL
+.I ctx
+refers to an unitialized aio context, the iocb pointed to by
+.I iocbs
+contains an improperly initialized iocb,
+.TP
+.B EBADF
+The iocb contains a file descriptor that does not exist.
+.TP
+.B EINVAL
+The file specified in the iocb does not support the given io operation.
+.SH "SEE ALSO"
+.BR io(3),
+.BR io_cancel(3),
+.BR io_fsync(3),
+.BR io_getevents(3),
+.BR io_prep_fsync(3),
+.BR io_prep_pread(3),
+.BR io_prep_pwrite(3),
+.BR io_queue_init(3),
+.BR io_queue_release(3),
+.BR io_queue_run(3),
+.BR io_queue_wait(3),
+.BR io_set_callback(3),
+.BR errno(3)
--- /dev/null
+prefix=/usr
+includedir=$(prefix)/include
+libdir=$(prefix)/lib
+
+CFLAGS ?= -g -fomit-frame-pointer -O2
+CFLAGS += -nostdlib -nostartfiles -Wall -I. -fPIC
+SO_CFLAGS=-shared $(CFLAGS)
+L_CFLAGS=$(CFLAGS)
+LINK_FLAGS=
+LINK_FLAGS+=$(LDFLAGS)
+
+soname=libaio.so.1
+minor=0
+micro=1
+libname=$(soname).$(minor).$(micro)
+all_targets += libaio.a $(libname)
+
+all: $(all_targets)
+
+# libaio provided functions
+libaio_srcs := io_queue_init.c io_queue_release.c
+libaio_srcs += io_queue_wait.c io_queue_run.c
+
+# real syscalls
+libaio_srcs += io_getevents.c io_submit.c io_cancel.c
+libaio_srcs += io_setup.c io_destroy.c
+
+# internal functions
+libaio_srcs += raw_syscall.c
+
+# old symbols
+libaio_srcs += compat-0_1.c
+
+libaio_objs := $(patsubst %.c,%.ol,$(libaio_srcs))
+libaio_sobjs := $(patsubst %.c,%.os,$(libaio_srcs))
+
+$(libaio_objs) $(libaio_sobjs): libaio.h vsys_def.h
+
+%.os: %.c
+ $(CC) $(SO_CFLAGS) -c -o $@ $<
+
+%.ol: %.c
+ $(CC) $(L_CFLAGS) -c -o $@ $<
+
+AR ?= ar
+RANLIB ?= ranlib
+libaio.a: $(libaio_objs)
+ rm -f libaio.a
+ $(AR) r libaio.a $^
+ $(RANLIB) libaio.a
+
+$(libname): $(libaio_sobjs) libaio.map
+ $(CC) $(SO_CFLAGS) -Wl,--version-script=libaio.map -Wl,-soname=$(soname) -o $@ $(libaio_sobjs) $(LINK_FLAGS)
+
+install: $(all_targets)
+ install -D -m 644 libaio.h $(includedir)/libaio.h
+ install -D -m 644 libaio.a $(libdir)/libaio.a
+ install -D -m 755 $(libname) $(libdir)/$(libname)
+ ln -sf $(libname) $(libdir)/$(soname)
+ ln -sf $(libname) $(libdir)/libaio.so
+
+$(libaio_objs): libaio.h
+
+clean:
+ rm -f $(all_targets) $(libaio_objs) $(libaio_sobjs) $(soname).new
+ rm -f *.so* *.a *.o
--- /dev/null
+/* libaio Linux async I/O interface
+
+ compat-0_1.c : compatibility symbols for libaio 0.1.x-0.3.x
+
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <stdlib.h>
+#include <asm/errno.h>
+
+#include "libaio.h"
+#include "vsys_def.h"
+
+#include "syscall.h"
+
+
+/* ABI change. Provide partial compatibility on this one for now. */
+SYMVER(compat0_1_io_cancel, io_cancel, 0.1);
+int compat0_1_io_cancel(io_context_t ctx, struct iocb *iocb)
+{
+ struct io_event event;
+
+ /* FIXME: the old ABI would return the event on the completion queue */
+ return io_cancel(ctx, iocb, &event);
+}
+
+SYMVER(compat0_1_io_queue_wait, io_queue_wait, 0.1);
+int compat0_1_io_queue_wait(io_context_t ctx, struct timespec *when)
+{
+ struct timespec timeout;
+ if (when)
+ timeout = *when;
+ return io_getevents(ctx, 0, 0, NULL, when ? &timeout : NULL);
+}
+
+
+/* ABI change. Provide backwards compatibility for this one. */
+SYMVER(compat0_1_io_getevents, io_getevents, 0.1);
+int compat0_1_io_getevents(io_context_t ctx_id, long nr,
+ struct io_event *events,
+ const struct timespec *const_timeout)
+{
+ struct timespec timeout;
+ if (const_timeout)
+ timeout = *const_timeout;
+ return io_getevents(ctx_id, 1, nr, events,
+ const_timeout ? &timeout : NULL);
+}
+
--- /dev/null
+/* io_cancel.c
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <libaio.h>
+#include "syscall.h"
+
+io_syscall3(int, io_cancel_0_4, io_cancel, io_context_t, ctx, struct iocb *, iocb, struct io_event *, event)
+DEFSYMVER(io_cancel_0_4, io_cancel, 0.4)
--- /dev/null
+/* io_destroy
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <errno.h>
+#include <libaio.h>
+#include "syscall.h"
+
+io_syscall1(int, io_destroy, io_destroy, io_context_t, ctx)
--- /dev/null
+/* io_getevents.c
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <libaio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <time.h>
+#include "syscall.h"
+
+io_syscall5(int, __io_getevents_0_4, io_getevents, io_context_t, ctx, long, min_nr, long, nr, struct io_event *, events, struct timespec *, timeout)
+
+#define AIO_RING_MAGIC 0xa10a10a1
+
+/* Ben will hate me for this */
+struct aio_ring {
+ unsigned id; /* kernel internal index number */
+ unsigned nr; /* number of io_events */
+ unsigned head;
+ unsigned tail;
+
+ unsigned magic;
+ unsigned compat_features;
+ unsigned incompat_features;
+ unsigned header_length; /* size of aio_ring */
+};
+
+int io_getevents_0_4(io_context_t ctx, long min_nr, long nr, struct io_event * events, struct timespec * timeout)
+{
+ struct aio_ring *ring;
+ ring = (struct aio_ring*)ctx;
+ if (ring==NULL || ring->magic != AIO_RING_MAGIC)
+ goto do_syscall;
+ if (timeout!=NULL && timeout->tv_sec == 0 && timeout->tv_nsec == 0) {
+ if (ring->head == ring->tail)
+ return 0;
+ }
+
+do_syscall:
+ return __io_getevents_0_4(ctx, min_nr, nr, events, timeout);
+}
+
+DEFSYMVER(io_getevents_0_4, io_getevents, 0.4)
--- /dev/null
+/* io_queue_init.c
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <libaio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+#include "syscall.h"
+
+int io_queue_init(int maxevents, io_context_t *ctxp)
+{
+ if (maxevents > 0) {
+ *ctxp = NULL;
+ return io_setup(maxevents, ctxp);
+ }
+ return -EINVAL;
+}
--- /dev/null
+/* io_queue_release.c
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <libaio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+int io_queue_release(io_context_t ctx)
+{
+ return io_destroy(ctx);
+}
--- /dev/null
+/* io_submit
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <libaio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <time.h>
+
+int io_queue_run(io_context_t ctx)
+{
+ static struct timespec timeout = { 0, 0 };
+ struct io_event event;
+ int ret;
+
+ /* FIXME: batch requests? */
+ while (1 == (ret = io_getevents(ctx, 0, 1, &event, &timeout))) {
+ io_callback_t cb = (io_callback_t)event.data;
+ struct iocb *iocb = event.obj;
+
+ cb(ctx, iocb, event.res, event.res2);
+ }
+
+ return ret;
+}
--- /dev/null
+/* io_submit
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#define NO_SYSCALL_ERRNO
+#include <sys/types.h>
+#include <libaio.h>
+#include <errno.h>
+#include "syscall.h"
+
+struct timespec;
+
+int io_queue_wait_0_4(io_context_t ctx, struct timespec *timeout)
+{
+ return io_getevents(ctx, 0, 0, NULL, timeout);
+}
+DEFSYMVER(io_queue_wait_0_4, io_queue_wait, 0.4)
--- /dev/null
+/* io_setup
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <errno.h>
+#include <libaio.h>
+#include "syscall.h"
+
+io_syscall2(int, io_setup, io_setup, int, maxevents, io_context_t *, ctxp)
--- /dev/null
+/* io_submit
+ libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <errno.h>
+#include <libaio.h>
+#include "syscall.h"
+
+io_syscall3(int, io_submit, io_submit, io_context_t, ctx, long, nr, struct iocb **, iocbs)
--- /dev/null
+/* /usr/include/libaio.h
+ *
+ * Copyright 2000,2001,2002 Red Hat, Inc.
+ *
+ * Written by Benjamin LaHaise <bcrl@redhat.com>
+ *
+ * libaio Linux async I/O interface
+ *
+ * This 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 of the License, or (at your option) any later version.
+ *
+ * This 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __LIBAIO_H
+#define __LIBAIO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+#include <string.h>
+
+struct timespec;
+struct sockaddr;
+struct iovec;
+
+typedef struct io_context *io_context_t;
+
+typedef enum io_iocb_cmd {
+ IO_CMD_PREAD = 0,
+ IO_CMD_PWRITE = 1,
+
+ IO_CMD_FSYNC = 2,
+ IO_CMD_FDSYNC = 3,
+
+ IO_CMD_POLL = 5, /* Never implemented in mainline, see io_prep_poll */
+ IO_CMD_NOOP = 6,
+ IO_CMD_PREADV = 7,
+ IO_CMD_PWRITEV = 8,
+} io_iocb_cmd_t;
+
+/* little endian, 32 bits */
+#if defined(__i386__) || (defined(__arm__) && !defined(__ARMEB__)) || \
+ defined(__sh__) || defined(__bfin__) || defined(__MIPSEL__) || \
+ defined(__cris__)
+#define PADDED(x, y) x; unsigned y
+#define PADDEDptr(x, y) x; unsigned y
+#define PADDEDul(x, y) unsigned long x; unsigned y
+
+/* little endian, 64 bits */
+#elif defined(__ia64__) || defined(__x86_64__) || defined(__alpha__) || \
+ (defined(__aarch64__) && defined(__AARCH64EL__))
+#define PADDED(x, y) x, y
+#define PADDEDptr(x, y) x
+#define PADDEDul(x, y) unsigned long x
+
+/* big endian, 64 bits */
+#elif defined(__powerpc64__) || defined(__s390x__) || \
+ (defined(__sparc__) && defined(__arch64__)) || \
+ (defined(__aarch64__) && defined(__AARCH64EB__))
+#define PADDED(x, y) unsigned y; x
+#define PADDEDptr(x,y) x
+#define PADDEDul(x, y) unsigned long x
+
+/* big endian, 32 bits */
+#elif defined(__PPC__) || defined(__s390__) || \
+ (defined(__arm__) && defined(__ARMEB__)) || \
+ defined(__sparc__) || defined(__MIPSEB__) || defined(__m68k__) || \
+ defined(__hppa__) || defined(__frv__) || defined(__avr32__)
+#define PADDED(x, y) unsigned y; x
+#define PADDEDptr(x, y) unsigned y; x
+#define PADDEDul(x, y) unsigned y; unsigned long x
+
+#else
+#error endian?
+#endif
+
+struct io_iocb_poll {
+ PADDED(int events, __pad1);
+}; /* result code is the set of result flags or -'ve errno */
+
+struct io_iocb_sockaddr {
+ struct sockaddr *addr;
+ int len;
+}; /* result code is the length of the sockaddr, or -'ve errno */
+
+struct io_iocb_common {
+ PADDEDptr(void *buf, __pad1);
+ PADDEDul(nbytes, __pad2);
+ long long offset;
+ long long __pad3;
+ unsigned flags;
+ unsigned resfd;
+}; /* result code is the amount read or -'ve errno */
+
+struct io_iocb_vector {
+ const struct iovec *vec;
+ int nr;
+ long long offset;
+}; /* result code is the amount read or -'ve errno */
+
+struct iocb {
+ PADDEDptr(void *data, __pad1); /* Return in the io completion event */
+ PADDED(unsigned key, __pad2); /* For use in identifying io requests */
+
+ short aio_lio_opcode;
+ short aio_reqprio;
+ int aio_fildes;
+
+ union {
+ struct io_iocb_common c;
+ struct io_iocb_vector v;
+ struct io_iocb_poll poll;
+ struct io_iocb_sockaddr saddr;
+ } u;
+};
+
+struct io_event {
+ PADDEDptr(void *data, __pad1);
+ PADDEDptr(struct iocb *obj, __pad2);
+ PADDEDul(res, __pad3);
+ PADDEDul(res2, __pad4);
+};
+
+#undef PADDED
+#undef PADDEDptr
+#undef PADDEDul
+
+typedef void (*io_callback_t)(io_context_t ctx, struct iocb *iocb, long res, long res2);
+
+/* library wrappers */
+extern int io_queue_init(int maxevents, io_context_t *ctxp);
+/*extern int io_queue_grow(io_context_t ctx, int new_maxevents);*/
+extern int io_queue_release(io_context_t ctx);
+/*extern int io_queue_wait(io_context_t ctx, struct timespec *timeout);*/
+extern int io_queue_run(io_context_t ctx);
+
+/* Actual syscalls */
+extern int io_setup(int maxevents, io_context_t *ctxp);
+extern int io_destroy(io_context_t ctx);
+extern int io_submit(io_context_t ctx, long nr, struct iocb *ios[]);
+extern int io_cancel(io_context_t ctx, struct iocb *iocb, struct io_event *evt);
+extern int io_getevents(io_context_t ctx_id, long min_nr, long nr, struct io_event *events, struct timespec *timeout);
+
+
+static inline void io_set_callback(struct iocb *iocb, io_callback_t cb)
+{
+ iocb->data = (void *)cb;
+}
+
+static inline void io_prep_pread(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_PREAD;
+ iocb->aio_reqprio = 0;
+ iocb->u.c.buf = buf;
+ iocb->u.c.nbytes = count;
+ iocb->u.c.offset = offset;
+}
+
+static inline void io_prep_pwrite(struct iocb *iocb, int fd, void *buf, size_t count, long long offset)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_PWRITE;
+ iocb->aio_reqprio = 0;
+ iocb->u.c.buf = buf;
+ iocb->u.c.nbytes = count;
+ iocb->u.c.offset = offset;
+}
+
+static inline void io_prep_preadv(struct iocb *iocb, int fd, const struct iovec *iov, int iovcnt, long long offset)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_PREADV;
+ iocb->aio_reqprio = 0;
+ iocb->u.c.buf = (void *)iov;
+ iocb->u.c.nbytes = iovcnt;
+ iocb->u.c.offset = offset;
+}
+
+static inline void io_prep_pwritev(struct iocb *iocb, int fd, const struct iovec *iov, int iovcnt, long long offset)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_PWRITEV;
+ iocb->aio_reqprio = 0;
+ iocb->u.c.buf = (void *)iov;
+ iocb->u.c.nbytes = iovcnt;
+ iocb->u.c.offset = offset;
+}
+
+/* Jeff Moyer says this was implemented in Red Hat AS2.1 and RHEL3.
+ * AFAICT, it was never in mainline, and should not be used. --RR */
+static inline void io_prep_poll(struct iocb *iocb, int fd, int events)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_POLL;
+ iocb->aio_reqprio = 0;
+ iocb->u.poll.events = events;
+}
+
+static inline int io_poll(io_context_t ctx, struct iocb *iocb, io_callback_t cb, int fd, int events)
+{
+ io_prep_poll(iocb, fd, events);
+ io_set_callback(iocb, cb);
+ return io_submit(ctx, 1, &iocb);
+}
+
+static inline void io_prep_fsync(struct iocb *iocb, int fd)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_FSYNC;
+ iocb->aio_reqprio = 0;
+}
+
+static inline int io_fsync(io_context_t ctx, struct iocb *iocb, io_callback_t cb, int fd)
+{
+ io_prep_fsync(iocb, fd);
+ io_set_callback(iocb, cb);
+ return io_submit(ctx, 1, &iocb);
+}
+
+static inline void io_prep_fdsync(struct iocb *iocb, int fd)
+{
+ memset(iocb, 0, sizeof(*iocb));
+ iocb->aio_fildes = fd;
+ iocb->aio_lio_opcode = IO_CMD_FDSYNC;
+ iocb->aio_reqprio = 0;
+}
+
+static inline int io_fdsync(io_context_t ctx, struct iocb *iocb, io_callback_t cb, int fd)
+{
+ io_prep_fdsync(iocb, fd);
+ io_set_callback(iocb, cb);
+ return io_submit(ctx, 1, &iocb);
+}
+
+static inline void io_set_eventfd(struct iocb *iocb, int eventfd)
+{
+ iocb->u.c.flags |= (1 << 0) /* IOCB_FLAG_RESFD */;
+ iocb->u.c.resfd = eventfd;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LIBAIO_H */
--- /dev/null
+LIBAIO_0.1 {
+ global:
+ io_queue_init;
+ io_queue_run;
+ io_queue_wait;
+ io_queue_release;
+ io_cancel;
+ io_submit;
+ io_getevents;
+ local:
+ *;
+
+};
+
+LIBAIO_0.4 {
+ global:
+ io_setup;
+ io_destroy;
+ io_cancel;
+ io_getevents;
+ io_queue_wait;
+} LIBAIO_0.1;
--- /dev/null
+#include "syscall.h"
+
+#if defined(__ia64__)
+/* based on code from glibc by Jes Sorensen */
+__asm__(".text\n"
+ ".globl __ia64_aio_raw_syscall\n"
+ ".proc __ia64_aio_raw_syscall\n"
+ "__ia64_aio_raw_syscall:\n"
+ "alloc r2=ar.pfs,1,0,8,0\n"
+ "mov r15=r32\n"
+ "break 0x100000\n"
+ ";;"
+ "br.ret.sptk.few b0\n"
+ ".size __ia64_aio_raw_syscall, . - __ia64_aio_raw_syscall\n"
+ ".endp __ia64_aio_raw_syscall"
+);
+#endif
+
+;
--- /dev/null
+#define __NR_io_setup 398
+#define __NR_io_destroy 399
+#define __NR_io_getevents 400
+#define __NR_io_submit 401
+#define __NR_io_cancel 402
+
+#define inline_syscall_r0_asm
+#define inline_syscall_r0_out_constraint "=v"
+
+#define inline_syscall_clobbers \
+ "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
+ "$22", "$23", "$24", "$25", "$27", "$28", "memory"
+
+#define inline_syscall0(name, args...) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19) \
+ : "0"(_sc_0) \
+ : inline_syscall_clobbers, \
+ "$16", "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall1(name,arg1) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16) \
+ : "0"(_sc_0), "2"(_sc_16) \
+ : inline_syscall_clobbers, \
+ "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall2(name,arg1,arg2) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \
+ : inline_syscall_clobbers, \
+ "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall3(name,arg1,arg2,arg3) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4 %5" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18) \
+ : inline_syscall_clobbers, "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall4(name,arg1,arg2,arg3,arg4) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4 %5 %6" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18), "1"(_sc_19) \
+ : inline_syscall_clobbers, "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ register long _sc_20 __asm__("$20"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ _sc_20 = (long) (arg5); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18), "=r"(_sc_20) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18), "1"(_sc_19), "5"(_sc_20) \
+ : inline_syscall_clobbers, "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ register long _sc_20 __asm__("$20"); \
+ register long _sc_21 __asm__("$21"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ _sc_19 = (long) (arg4); \
+ _sc_20 = (long) (arg5); \
+ _sc_21 = (long) (arg6); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18), "=r"(_sc_20), "=r"(_sc_21) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), "4"(_sc_18), \
+ "1"(_sc_19), "5"(_sc_20), "6"(_sc_21) \
+ : inline_syscall_clobbers); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+
+#define INLINE_SYSCALL1(name, nr, args...) \
+({ \
+ long _sc_ret, _sc_err; \
+ inline_syscall##nr(__NR_##name, args); \
+ if (_sc_err != 0) \
+ { \
+ _sc_ret = -(_sc_ret); \
+ } \
+ _sc_ret; \
+})
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+{ \
+ return (type)INLINE_SYSCALL1(sname, 1, arg1); \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) \
+{ \
+ return (type)INLINE_SYSCALL1(sname, 2, arg1, arg2); \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+ return (type)INLINE_SYSCALL1(sname, 3, arg1, arg2, arg3); \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+ return (type)INLINE_SYSCALL1(sname, 4, arg1, arg2, arg3, arg4); \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+ return (type)INLINE_SYSCALL1(sname, 5, arg1, arg2, arg3, arg4, arg5);\
+}
--- /dev/null
+/*
+ * linux/include/asm-arm/unistd.h
+ *
+ * Copyright (C) 2001-2005 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Please forward _all_ changes to this file to rmk@arm.linux.org.uk,
+ * no matter what the change is. Thanks!
+ */
+
+#define __NR_OABI_SYSCALL_BASE 0x900000
+
+#if defined(__thumb__) || defined(__ARM_EABI__)
+#define __NR_SYSCALL_BASE 0
+#else
+#define __NR_SYSCALL_BASE __NR_OABI_SYSCALL_BASE
+#endif
+
+#define __NR_io_setup (__NR_SYSCALL_BASE+243)
+#define __NR_io_destroy (__NR_SYSCALL_BASE+244)
+#define __NR_io_getevents (__NR_SYSCALL_BASE+245)
+#define __NR_io_submit (__NR_SYSCALL_BASE+246)
+#define __NR_io_cancel (__NR_SYSCALL_BASE+247)
+
+#define __sys2(x) #x
+#define __sys1(x) __sys2(x)
+
+#if defined(__thumb__) || defined(__ARM_EABI__)
+#define __SYS_REG(name) register long __sysreg __asm__("r7") = __NR_##name;
+#define __SYS_REG_LIST(regs...) "r" (__sysreg) , ##regs
+#define __syscall(name) "swi\t0"
+#else
+#define __SYS_REG(name)
+#define __SYS_REG_LIST(regs...) regs
+#define __syscall(name) "swi\t" __sys1(__NR_##name) ""
+#endif
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) { \
+ __SYS_REG(sname) \
+ register long __r0 __asm__("r0") = (long)arg1; \
+ register long __res_r0 __asm__("r0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_r0) \
+ : __SYS_REG_LIST( "0" (__r0) ) \
+ : "memory" ); \
+ return (type) __res_r0; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) { \
+ __SYS_REG(sname) \
+ register long __r0 __asm__("r0") = (long)arg1; \
+ register long __r1 __asm__("r1") = (long)arg2; \
+ register long __res_r0 __asm__("r0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_r0) \
+ : __SYS_REG_LIST( "0" (__r0), "r" (__r1) ) \
+ : "memory" ); \
+ return (type) __res_r0; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) { \
+ __SYS_REG(sname) \
+ register long __r0 __asm__("r0") = (long)arg1; \
+ register long __r1 __asm__("r1") = (long)arg2; \
+ register long __r2 __asm__("r2") = (long)arg3; \
+ register long __res_r0 __asm__("r0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_r0) \
+ : __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2) ) \
+ : "memory" ); \
+ return (type) __res_r0; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4)\
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
+ __SYS_REG(sname) \
+ register long __r0 __asm__("r0") = (long)arg1; \
+ register long __r1 __asm__("r1") = (long)arg2; \
+ register long __r2 __asm__("r2") = (long)arg3; \
+ register long __r3 __asm__("r3") = (long)arg4; \
+ register long __res_r0 __asm__("r0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_r0) \
+ : __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2), "r" (__r3) ) \
+ : "memory" ); \
+ return (type) __res_r0; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {\
+ __SYS_REG(sname) \
+ register long __r0 __asm__("r0") = (long)arg1; \
+ register long __r1 __asm__("r1") = (long)arg2; \
+ register long __r2 __asm__("r2") = (long)arg3; \
+ register long __r3 __asm__("r3") = (long)arg4; \
+ register long __r4 __asm__("r4") = (long)arg5; \
+ register long __res_r0 __asm__("r0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_r0) \
+ : __SYS_REG_LIST( "0" (__r0), "r" (__r1), "r" (__r2), \
+ "r" (__r3), "r" (__r4) ) \
+ : "memory" ); \
+ return (type) __res_r0; \
+}
+
--- /dev/null
+/*
+ * linux/include/asm-arm/unistd.h
+ *
+ * Copyright (C) 2001-2005 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Please forward _all_ changes to this file to rmk@arm.linux.org.uk,
+ * no matter what the change is. Thanks!
+ */
+
+#define __NR_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+
+#define __sys2(x) #x
+#define __sys1(x) __sys2(x)
+
+#define __SYS_REG(name) register long __sysreg __asm__("w8") = __NR_##name;
+#define __SYS_REG_LIST(regs...) "r" (__sysreg) , ##regs
+#define __syscall(name) "svc\t#0"
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) { \
+ __SYS_REG(sname) \
+ register long __x0 __asm__("x0") = (long)arg1; \
+ register long __res_x0 __asm__("x0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_x0) \
+ : __SYS_REG_LIST( "0" (__x0) ) \
+ : "memory" ); \
+ return (type) __res_x0; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) { \
+ __SYS_REG(sname) \
+ register long __x0 __asm__("x0") = (long)arg1; \
+ register long __x1 __asm__("x1") = (long)arg2; \
+ register long __res_x0 __asm__("x0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_x0) \
+ : __SYS_REG_LIST( "0" (__x0), "r" (__x1) ) \
+ : "memory" ); \
+ return (type) __res_x0; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) { \
+ __SYS_REG(sname) \
+ register long __x0 __asm__("x0") = (long)arg1; \
+ register long __x1 __asm__("x1") = (long)arg2; \
+ register long __x2 __asm__("x2") = (long)arg3; \
+ register long __res_x0 __asm__("x0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_x0) \
+ : __SYS_REG_LIST( "0" (__x0), "r" (__x1), "r" (__x2) ) \
+ : "memory" ); \
+ return (type) __res_x0; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4)\
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
+ __SYS_REG(sname) \
+ register long __x0 __asm__("x0") = (long)arg1; \
+ register long __x1 __asm__("x1") = (long)arg2; \
+ register long __x2 __asm__("x2") = (long)arg3; \
+ register long __x3 __asm__("x3") = (long)arg4; \
+ register long __res_x0 __asm__("x0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_x0) \
+ : __SYS_REG_LIST( "0" (__x0), "r" (__x1), "r" (__x2), "r" (__x3) ) \
+ : "memory" ); \
+ return (type) __res_x0; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) {\
+ __SYS_REG(sname) \
+ register long __x0 __asm__("x0") = (long)arg1; \
+ register long __x1 __asm__("x1") = (long)arg2; \
+ register long __x2 __asm__("x2") = (long)arg3; \
+ register long __x3 __asm__("x3") = (long)arg4; \
+ register long __x4 __asm__("x4") = (long)arg5; \
+ register long __res_x0 __asm__("x0"); \
+ __asm__ __volatile__ ( \
+ __syscall(sname) \
+ : "=r" (__res_x0) \
+ : __SYS_REG_LIST( "0" (__x0), "r" (__x1), "r" (__x2), \
+ "r" (__x3), "r" (__x4) ) \
+ : "memory" ); \
+ return (type) __res_x0; \
+}
--- /dev/null
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#define _body_io_syscall(sname, args...) \
+{ \
+ int ret = syscall(__NR_##sname, ## args); \
+ return ret < 0 ? -errno : ret; \
+}
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+_body_io_syscall(sname, (long)arg1)
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) \
+_body_io_syscall(sname, (long)arg1, (long)arg2)
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) \
+_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3)
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4)
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, type5,arg5) \
+type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+_body_io_syscall(sname, (long)arg1, (long)arg2, (long)arg3, (long)arg4, (long)arg5)
--- /dev/null
+#define __NR_io_setup 245
+#define __NR_io_destroy 246
+#define __NR_io_getevents 247
+#define __NR_io_submit 248
+#define __NR_io_cancel 249
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+{ \
+long __res; \
+__asm__ volatile ("xchgl %%edi,%%ebx\n" \
+ "int $0x80\n" \
+ "xchgl %%edi,%%ebx" \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1))); \
+return __res; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+__asm__ volatile ("xchgl %%edi,%%ebx\n" \
+ "int $0x80\n" \
+ "xchgl %%edi,%%ebx" \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"c" ((long)(arg2))); \
+return __res; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+__asm__ volatile ("xchgl %%edi,%%ebx\n" \
+ "int $0x80\n" \
+ "xchgl %%edi,%%ebx" \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"c" ((long)(arg2)), \
+ "d" ((long)(arg3))); \
+return __res; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+__asm__ volatile ("xchgl %%edi,%%ebx\n" \
+ "int $0x80\n" \
+ "xchgl %%edi,%%ebx" \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"c" ((long)(arg2)), \
+ "d" ((long)(arg3)),"S" ((long)(arg4))); \
+return __res; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+long tmp; \
+__asm__ volatile ("movl %%ebx,%7\n" \
+ "movl %2,%%ebx\n" \
+ "int $0x80\n" \
+ "movl %7,%%ebx" \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"rm" ((long)(arg1)),"c" ((long)(arg2)), \
+ "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)), \
+ "m" (tmp)); \
+return __res; \
+}
--- /dev/null
+#define __NR_io_setup 1238
+#define __NR_io_destroy 1239
+#define __NR_io_getevents 1240
+#define __NR_io_submit 1241
+#define __NR_io_cancel 1242
+
+#define __ia64_raw_syscall(fname, sname) \
+ __asm__ (".text\n" \
+ ".globl " SYMSTR(fname) "\n" \
+ ".proc " SYMSTR(fname) "\n" \
+ SYMSTR(fname) ":\n" \
+ " mov r15=" SYMSTR( __NR_ ## sname ) "\n" \
+ " break 0x100000\n" \
+ " ;;\n" \
+ " cmp.eq p6,p0=-1,r10\n" \
+ " ;;\n" \
+ " (p6) sub r8=0,r8\n" \
+ " br.ret.sptk.few b0\n" \
+ ".size " SYMSTR(fname) ", . - " SYMSTR(fname) "\n" \
+ ".endp " SYMSTR(fname) "\n" \
+ );
+
+#define io_syscall0(type, name) \
+ extern type name(void); \
+ __ia64_raw_syscall(name);
+
+#define io_syscall1(type, fname, sname, type1, arg1) \
+ extern type fname(type1 arg1); \
+ __ia64_raw_syscall(fname, sname);
+
+#define io_syscall2(type, fname, sname, type1, arg1, type2, arg2) \
+ extern type fname(type1 arg1, type2 arg2); \
+ __ia64_raw_syscall(fname, sname);
+
+#define io_syscall3(type, fname, sname, type1, arg1, type2, arg2, type3, arg3) \
+ extern type fname(type1 arg1, type2 arg2, type3 arg3); \
+ __ia64_raw_syscall(fname, sname);
+
+#define io_syscall4(type, fname, sname, type1, arg1, type2, arg2, type3, arg3, type4, arg4) \
+ extern type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4); \
+ __ia64_raw_syscall(fname, sname);
+
+#define io_syscall5(type, fname, sname, type1, arg1, type2, arg2, type3, arg3, type4, arg4, type5, arg5) \
+ extern type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5); \
+ __ia64_raw_syscall(fname, sname);
--- /dev/null
+#define __NR_io_setup 227
+#define __NR_io_destroy 228
+#define __NR_io_getevents 229
+#define __NR_io_submit 230
+#define __NR_io_cancel 231
+
+/* On powerpc a system call basically clobbers the same registers like a
+ * function call, with the exception of LR (which is needed for the
+ * "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
+ * an error return status).
+ */
+
+#define __syscall_nr(nr, type, name, args...) \
+ unsigned long __sc_ret, __sc_err; \
+ { \
+ register unsigned long __sc_0 __asm__ ("r0"); \
+ register unsigned long __sc_3 __asm__ ("r3"); \
+ register unsigned long __sc_4 __asm__ ("r4"); \
+ register unsigned long __sc_5 __asm__ ("r5"); \
+ register unsigned long __sc_6 __asm__ ("r6"); \
+ register unsigned long __sc_7 __asm__ ("r7"); \
+ register unsigned long __sc_8 __asm__ ("r8"); \
+ \
+ __sc_loadargs_##nr(name, args); \
+ __asm__ __volatile__ \
+ ("sc \n\t" \
+ "mfcr %0 " \
+ : "=&r" (__sc_0), \
+ "=&r" (__sc_3), "=&r" (__sc_4), \
+ "=&r" (__sc_5), "=&r" (__sc_6), \
+ "=&r" (__sc_7), "=&r" (__sc_8) \
+ : __sc_asm_input_##nr \
+ : "cr0", "ctr", "memory", \
+ "r9", "r10","r11", "r12"); \
+ __sc_ret = __sc_3; \
+ __sc_err = __sc_0; \
+ } \
+ if (__sc_err & 0x10000000) return -((int)__sc_ret); \
+ return (type) __sc_ret
+
+#define __sc_loadargs_0(name, dummy...) \
+ __sc_0 = __NR_##name
+#define __sc_loadargs_1(name, arg1) \
+ __sc_loadargs_0(name); \
+ __sc_3 = (unsigned long) (arg1)
+#define __sc_loadargs_2(name, arg1, arg2) \
+ __sc_loadargs_1(name, arg1); \
+ __sc_4 = (unsigned long) (arg2)
+#define __sc_loadargs_3(name, arg1, arg2, arg3) \
+ __sc_loadargs_2(name, arg1, arg2); \
+ __sc_5 = (unsigned long) (arg3)
+#define __sc_loadargs_4(name, arg1, arg2, arg3, arg4) \
+ __sc_loadargs_3(name, arg1, arg2, arg3); \
+ __sc_6 = (unsigned long) (arg4)
+#define __sc_loadargs_5(name, arg1, arg2, arg3, arg4, arg5) \
+ __sc_loadargs_4(name, arg1, arg2, arg3, arg4); \
+ __sc_7 = (unsigned long) (arg5)
+
+#define __sc_asm_input_0 "0" (__sc_0)
+#define __sc_asm_input_1 __sc_asm_input_0, "1" (__sc_3)
+#define __sc_asm_input_2 __sc_asm_input_1, "2" (__sc_4)
+#define __sc_asm_input_3 __sc_asm_input_2, "3" (__sc_5)
+#define __sc_asm_input_4 __sc_asm_input_3, "4" (__sc_6)
+#define __sc_asm_input_5 __sc_asm_input_4, "5" (__sc_7)
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+{ \
+ __syscall_nr(1, type, sname, arg1); \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1, type2 arg2) \
+{ \
+ __syscall_nr(2, type, sname, arg1, arg2); \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1, type2 arg2, type3 arg3) \
+{ \
+ __syscall_nr(3, type, sname, arg1, arg2, arg3); \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+ __syscall_nr(4, type, sname, arg1, arg2, arg3, arg4); \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
+{ \
+ __syscall_nr(5, type, sname, arg1, arg2, arg3, arg4, arg5); \
+}
--- /dev/null
+#define __NR_io_setup 243
+#define __NR_io_destroy 244
+#define __NR_io_getevents 245
+#define __NR_io_submit 246
+#define __NR_io_cancel 247
+
+#define io_svc_clobber "1", "cc", "memory"
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " la %%r1,%1\n" \
+ " .svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##sname), \
+ "0" (__arg1) \
+ : io_svc_clobber ); \
+ __res = __svcres; \
+ return (type) __res; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1, type2 arg2) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " la %%r1,%1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##sname), \
+ "0" (__arg1), \
+ "d" (__arg2) \
+ : io_svc_clobber ); \
+ __res = __svcres; \
+ return (type) __res; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2, \
+ type3,arg3) \
+type fname(type1 arg1, type2 arg2, type3 arg3) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " la %%r1,%1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##sname), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3) \
+ : io_svc_clobber ); \
+ __res = __svcres; \
+ return (type) __res; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2, \
+ type3,arg3,type4,arg4) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " la %%r1,%1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##sname), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4) \
+ : io_svc_clobber ); \
+ __res = __svcres; \
+ return (type) __res; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2, \
+ type3,arg3,type4,arg4,type5,arg5) \
+type fname(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+ type5 arg5) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register type5 __arg5 asm("6") = arg5; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " la %%r1,%1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##sname), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4), \
+ "d" (__arg5) \
+ : io_svc_clobber ); \
+ __res = __svcres; \
+ return (type) __res; \
+}
--- /dev/null
+#include <errno.h>
+
+#define __NR_io_setup 268
+#define __NR_io_destroy 269
+#define __NR_io_submit 270
+#define __NR_io_cancel 271
+#define __NR_io_getevents 272
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##sname; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+ "bcc 1f\n\t" \
+ "mov %%o0, %0\n\t" \
+ "sub %%g0, %%o0, %0\n\t" \
+ "1:\n\t" \
+ : "=r" (__res), "=&r" (__o0) \
+ : "1" (__o0), "r" (__g1) \
+ : "cc"); \
+return (type) __res; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##sname; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+ "bcc 1f\n\t" \
+ "mov %%o0, %0\n\t" \
+ "sub %%g0, %%o0, %0\n\t" \
+ "1:\n\t" \
+ : "=r" (__res), "=&r" (__o0) \
+ : "1" (__o0), "r" (__o1), "r" (__g1) \
+ : "cc"); \
+return (type) __res; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##sname; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+ "bcc 1f\n\t" \
+ "mov %%o0, %0\n\t" \
+ "sub %%g0, %%o0, %0\n\t" \
+ "1:\n\t" \
+ : "=r" (__res), "=&r" (__o0) \
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
+ : "cc"); \
+return (type) __res; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##sname; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+ "bcc 1f\n\t" \
+ "mov %%o0, %0\n\t" \
+ "sub %%g0, %%o0, %0\n\t" \
+ "1:\n\t" \
+ : "=r" (__res), "=&r" (__o0) \
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
+ : "cc"); \
+return (type) __res; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+register long __g1 __asm__ ("g1") = __NR_##sname; \
+register long __o0 __asm__ ("o0") = (long)(arg1); \
+register long __o1 __asm__ ("o1") = (long)(arg2); \
+register long __o2 __asm__ ("o2") = (long)(arg3); \
+register long __o3 __asm__ ("o3") = (long)(arg4); \
+register long __o4 __asm__ ("o4") = (long)(arg5); \
+__asm__ __volatile__ ("t 0x10\n\t" \
+ "bcc 1f\n\t" \
+ "mov %%o0, %0\n\t" \
+ "sub %%g0, %%o0, %0\n\t" \
+ "1:\n\t" \
+ : "=r" (__res), "=&r" (__o0) \
+ : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
+ : "cc"); \
+return (type) __res; \
+}
--- /dev/null
+#define __NR_io_setup 206
+#define __NR_io_destroy 207
+#define __NR_io_getevents 208
+#define __NR_io_submit 209
+#define __NR_io_cancel 210
+
+#define __syscall_clobber "r11","rcx","memory"
+#define __syscall "syscall"
+
+#define io_syscall1(type,fname,sname,type1,arg1) \
+type fname(type1 arg1) \
+{ \
+long __res; \
+__asm__ volatile (__syscall \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)) : __syscall_clobber ); \
+return __res; \
+}
+
+#define io_syscall2(type,fname,sname,type1,arg1,type2,arg2) \
+type fname(type1 arg1,type2 arg2) \
+{ \
+long __res; \
+__asm__ volatile (__syscall \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)) : __syscall_clobber ); \
+return __res; \
+}
+
+#define io_syscall3(type,fname,sname,type1,arg1,type2,arg2,type3,arg3) \
+type fname(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+long __res; \
+__asm__ volatile (__syscall \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \
+ "d" ((long)(arg3)) : __syscall_clobber); \
+return __res; \
+}
+
+#define io_syscall4(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type fname (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+long __res; \
+__asm__ volatile ("movq %5,%%r10 ;" __syscall \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \
+ "d" ((long)(arg3)),"g" ((long)(arg4)) : __syscall_clobber,"r10" ); \
+return __res; \
+}
+
+#define io_syscall5(type,fname,sname,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+ type5,arg5) \
+type fname (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+long __res; \
+__asm__ volatile ("movq %5,%%r10 ; movq %6,%%r8 ; " __syscall \
+ : "=a" (__res) \
+ : "0" (__NR_##sname),"D" ((long)(arg1)),"S" ((long)(arg2)), \
+ "d" ((long)(arg3)),"g" ((long)(arg4)),"g" ((long)(arg5)) : \
+ __syscall_clobber,"r8","r10" ); \
+return __res; \
+}
--- /dev/null
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#define _SYMSTR(str) #str
+#define SYMSTR(str) _SYMSTR(str)
+
+#define SYMVER(compat_sym, orig_sym, ver_sym) \
+ __asm__(".symver " SYMSTR(compat_sym) "," SYMSTR(orig_sym) "@LIBAIO_" SYMSTR(ver_sym));
+
+#define DEFSYMVER(compat_sym, orig_sym, ver_sym) \
+ __asm__(".symver " SYMSTR(compat_sym) "," SYMSTR(orig_sym) "@@LIBAIO_" SYMSTR(ver_sym));
+
+#if defined(__i386__)
+#include "syscall-i386.h"
+#elif defined(__x86_64__)
+#include "syscall-x86_64.h"
+#elif defined(__ia64__)
+#include "syscall-ia64.h"
+#elif defined(__PPC__)
+#include "syscall-ppc.h"
+#elif defined(__s390__)
+#include "syscall-s390.h"
+#elif defined(__alpha__)
+#include "syscall-alpha.h"
+#elif defined(__arm__)
+#include "syscall-arm.h"
+#elif defined(__sparc__)
+#include "syscall-sparc.h"
+#elif defined(__aarch64__)
+#include "syscall-arm64.h"
+#else
+#warning "using generic syscall method"
+#include "syscall-generic.h"
+#endif
--- /dev/null
+/* libaio Linux async I/O interface
+ Copyright 2002 Red Hat, Inc.
+
+ This 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 of the License, or (at your option) any later version.
+
+ This 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 this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+extern int vsys_io_setup(unsigned nr_reqs, io_context_t *ctxp);
+extern int vsys_io_destroy(io_context_t ctx);
+extern int vsys_io_submit(io_context_t ctx, long nr, struct iocb *iocbs[]);
+extern int vsys_io_cancel(io_context_t ctx, struct iocb *iocb);
+extern int vsys_io_wait(io_context_t ctx, struct iocb *iocb, const struct timespec *when);
+extern int vsys_io_getevents(io_context_t ctx_id, long nr, struct io_event *events, const struct timespec *timeout);
+
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