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zfs/config/kernel-vfs-rw-iterate.m4

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Linux 4.1 compat: use read_iter() / write_iter() Linux 3.15 commit torvalds/linux@293bc98 introduced two new methods. The ->read_iter() and ->write_iter() methods were designed to replace the ->aio_read() and ->aio_write() interfaces. Both interfaces were preserved for several kernel releases in order to migrate all existing consumers to the new interfaces. But as of Linux 4.1 the legacy interface has been retired and the ZFS code must be updated to use the new interfaces. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3352
2015-05-11 23:26:18 +00:00
dnl #
Fix loop device becomes read-only Commit 933ec99 removes read and write from f_op because the vfs layer will select iter_write or aio_write automatically. However, for Linux <= 4.0, loop_set_fd will actually check f_op->write and set read-only if not exists. This patch add them back and use the generic do_sync_{read,write} for aio_{read,write} and new_sync_{read,write} for {read,write}_iter. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5776 Closes #5855
2017-03-06 17:20:20 +00:00
dnl # Linux 3.16 API
Linux 4.1 compat: use read_iter() / write_iter() Linux 3.15 commit torvalds/linux@293bc98 introduced two new methods. The ->read_iter() and ->write_iter() methods were designed to replace the ->aio_read() and ->aio_write() interfaces. Both interfaces were preserved for several kernel releases in order to migrate all existing consumers to the new interfaces. But as of Linux 4.1 the legacy interface has been retired and the ZFS code must be updated to use the new interfaces. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3352
2015-05-11 23:26:18 +00:00
dnl #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_RW_ITERATE], [
ZFS_LINUX_TEST_SRC([file_operations_rw], [
Linux 4.1 compat: use read_iter() / write_iter() Linux 3.15 commit torvalds/linux@293bc98 introduced two new methods. The ->read_iter() and ->write_iter() methods were designed to replace the ->aio_read() and ->aio_write() interfaces. Both interfaces were preserved for several kernel releases in order to migrate all existing consumers to the new interfaces. But as of Linux 4.1 the legacy interface has been retired and the ZFS code must be updated to use the new interfaces. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3352
2015-05-11 23:26:18 +00:00
#include <linux/fs.h>
ssize_t test_read(struct kiocb *kiocb, struct iov_iter *to)
{ return 0; }
ssize_t test_write(struct kiocb *kiocb, struct iov_iter *from)
{ return 0; }
static const struct file_operations
fops __attribute__ ((unused)) = {
.read_iter = test_read,
.write_iter = test_write,
};
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
],[])
Fix loop device becomes read-only Commit 933ec99 removes read and write from f_op because the vfs layer will select iter_write or aio_write automatically. However, for Linux <= 4.0, loop_set_fd will actually check f_op->write and set read-only if not exists. This patch add them back and use the generic do_sync_{read,write} for aio_{read,write} and new_sync_{read,write} for {read,write}_iter. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5776 Closes #5855
2017-03-06 17:20:20 +00:00
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
ZFS_LINUX_TEST_SRC([new_sync_rw], [
#include <linux/fs.h>
Fix loop device becomes read-only Commit 933ec99 removes read and write from f_op because the vfs layer will select iter_write or aio_write automatically. However, for Linux <= 4.0, loop_set_fd will actually check f_op->write and set read-only if not exists. This patch add them back and use the generic do_sync_{read,write} for aio_{read,write} and new_sync_{read,write} for {read,write}_iter. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5776 Closes #5855
2017-03-06 17:20:20 +00:00
],[
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
ssize_t ret __attribute__ ((unused));
struct file *filp = NULL;
char __user *rbuf = NULL;
const char __user *wbuf = NULL;
size_t len = 0;
loff_t ppos;
ret = new_sync_read(filp, rbuf, len, &ppos);
ret = new_sync_write(filp, wbuf, len, &ppos);
Fix loop device becomes read-only Commit 933ec99 removes read and write from f_op because the vfs layer will select iter_write or aio_write automatically. However, for Linux <= 4.0, loop_set_fd will actually check f_op->write and set read-only if not exists. This patch add them back and use the generic do_sync_{read,write} for aio_{read,write} and new_sync_{read,write} for {read,write}_iter. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5776 Closes #5855
2017-03-06 17:20:20 +00:00
])
])
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_VFS_RW_ITERATE], [
AC_MSG_CHECKING([whether fops->read/write_iter() are available])
ZFS_LINUX_TEST_RESULT([file_operations_rw], [
Fix loop device becomes read-only Commit 933ec99 removes read and write from f_op because the vfs layer will select iter_write or aio_write automatically. However, for Linux <= 4.0, loop_set_fd will actually check f_op->write and set read-only if not exists. This patch add them back and use the generic do_sync_{read,write} for aio_{read,write} and new_sync_{read,write} for {read,write}_iter. Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5776 Closes #5855
2017-03-06 17:20:20 +00:00
AC_MSG_RESULT(yes)
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFINE(HAVE_VFS_RW_ITERATE, 1,
[fops->read/write_iter() are available])
dnl #
dnl # Linux 4.1 API
dnl #
AC_MSG_CHECKING([whether new_sync_read/write() are available])
ZFS_LINUX_TEST_RESULT([new_sync_rw], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_NEW_SYNC_READ, 1,
[new_sync_read()/new_sync_write() are available])
],[
AC_MSG_RESULT(no)
])
Linux 4.1 compat: use read_iter() / write_iter() Linux 3.15 commit torvalds/linux@293bc98 introduced two new methods. The ->read_iter() and ->write_iter() methods were designed to replace the ->aio_read() and ->aio_write() interfaces. Both interfaces were preserved for several kernel releases in order to migrate all existing consumers to the new interfaces. But as of Linux 4.1 the legacy interface has been retired and the ZFS code must be updated to use the new interfaces. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3352
2015-05-11 23:26:18 +00:00
],[
AC_MSG_RESULT(no)
])
])
Retire .write/.read file operations The .write/.read file operations callbacks can be retired since support for .read_iter/.write_iter and .aio_read/.aio_write has been added. The vfs_write()/vfs_read() entry functions will select the correct interface for the kernel. This is desirable because all VFS write/read operations now rely on common code. This change also add the generic write checks to make sure that ulimits are enforced correctly on write. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5587 Closes #5673
2017-01-27 18:43:39 +00:00
dnl #
dnl # Linux 4.1.x API
dnl #
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS], [
ZFS_LINUX_TEST_SRC([generic_write_checks], [
Retire .write/.read file operations The .write/.read file operations callbacks can be retired since support for .read_iter/.write_iter and .aio_read/.aio_write has been added. The vfs_write()/vfs_read() entry functions will select the correct interface for the kernel. This is desirable because all VFS write/read operations now rely on common code. This change also add the generic write checks to make sure that ulimits are enforced correctly on write. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5587 Closes #5673
2017-01-27 18:43:39 +00:00
#include <linux/fs.h>
],[
struct kiocb *iocb = NULL;
struct iov_iter *iov = NULL;
generic_write_checks(iocb, iov);
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS], [
AC_MSG_CHECKING([whether generic_write_checks() takes kiocb])
ZFS_LINUX_TEST_RESULT([generic_write_checks], [
Retire .write/.read file operations The .write/.read file operations callbacks can be retired since support for .read_iter/.write_iter and .aio_read/.aio_write has been added. The vfs_write()/vfs_read() entry functions will select the correct interface for the kernel. This is desirable because all VFS write/read operations now rely on common code. This change also add the generic write checks to make sure that ulimits are enforced correctly on write. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5587 Closes #5673
2017-01-27 18:43:39 +00:00
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_GENERIC_WRITE_CHECKS_KIOCB, 1,
Perform KABI checks in parallel Reduce the time required for ./configure to perform the needed KABI checks by allowing kbuild to compile multiple test cases in parallel. This was accomplished by splitting each test's source code from the logic handling whether that code could be compiled or not. By introducing this split it's possible to minimize the number of times kbuild needs to be invoked. As importantly, it means all of the tests can be built in parallel. This does require a little extra care since we expect some tests to fail, so the --keep-going (-k) option must be provided otherwise some tests may not get compiled. Furthermore, since a failure during the kbuild modpost phase will result in an early exit; the final linking phase is limited to tests which passed the initial compilation and produced an object file. Once everything has been built the configure script proceeds as previously. The only significant difference is that it now merely needs to test for the existence of a .ko file to determine the result of a given test. This vastly speeds up the entire process. New test cases should use ZFS_LINUX_TEST_SRC to declare their test source code and ZFS_LINUX_TEST_RESULT to check the result. All of the existing kernel-*.m4 files have been updated accordingly, see config/kernel-current-time.m4 for a basic example. The legacy ZFS_LINUX_TRY_COMPILE macro has been kept to handle special cases but it's use is not encouraged. master (secs) patched (secs) ------------- ---------------- autogen.sh 61 68 configure 137 24 (~17% of current run time) make -j $(nproc) 44 44 make rpms 287 150 Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8547 Closes #9132 Closes #9341 Conflicts: Makefile.am config/kernel-fpu.m4
2019-10-01 19:50:34 +00:00
[generic_write_checks() takes kiocb])
Retire .write/.read file operations The .write/.read file operations callbacks can be retired since support for .read_iter/.write_iter and .aio_read/.aio_write has been added. The vfs_write()/vfs_read() entry functions will select the correct interface for the kernel. This is desirable because all VFS write/read operations now rely on common code. This change also add the generic write checks to make sure that ulimits are enforced correctly on write. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Closes #5587 Closes #5673
2017-01-27 18:43:39 +00:00
],[
AC_MSG_RESULT(no)
])
])