mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
Add mremap tests
Add tests for MREMAP_MAYMOVE and MREMAP_FIXED. On Linux, also test
MREMAP_DONTUNMAP.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit ff0320bec2)
This commit is contained in:
H.J. Lu
Florian Weimer
parent
a8c230c881
commit
7f5ccdd8af
@ -251,6 +251,8 @@ tests := \
|
||||
tst-mntent-blank-passno \
|
||||
tst-mntent-escape \
|
||||
tst-mntent2 \
|
||||
tst-mremap1 \
|
||||
tst-mremap2 \
|
||||
tst-preadvwritev \
|
||||
tst-preadvwritev2 \
|
||||
tst-preadvwritev64 \
|
||||
|
||||
46
misc/tst-mremap1.c
Normal file
46
misc/tst-mremap1.c
Normal file
@ -0,0 +1,46 @@
|
||||
/* Test mremap with MREMAP_MAYMOVE.
|
||||
Copyright (C) 2024 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/mman.h>
|
||||
#include <support/xstdlib.h>
|
||||
#include <support/xunistd.h>
|
||||
#include <support/check.h>
|
||||
#include <support/test-driver.h>
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
size_t old_size = getpagesize ();
|
||||
char *old_addr = xmmap (NULL, old_size, PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||||
old_addr[0] = 1;
|
||||
old_addr[old_size - 1] = 2;
|
||||
|
||||
/* Test MREMAP_MAYMOVE. */
|
||||
size_t new_size = old_size + old_size;
|
||||
char *new_addr = mremap (old_addr, old_size, new_size, MREMAP_MAYMOVE);
|
||||
TEST_VERIFY_EXIT (new_addr != MAP_FAILED);
|
||||
new_addr[0] = 1;
|
||||
new_addr[new_size - 1] = 2;
|
||||
xmunmap (new_addr, new_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
||||
54
misc/tst-mremap2.c
Normal file
54
misc/tst-mremap2.c
Normal file
@ -0,0 +1,54 @@
|
||||
/* Test mremap with MREMAP_FIXED.
|
||||
Copyright (C) 2024 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/mman.h>
|
||||
#include <support/xstdlib.h>
|
||||
#include <support/xunistd.h>
|
||||
#include <support/test-driver.h>
|
||||
#include <mremap-failure.h>
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
size_t old_size = getpagesize ();
|
||||
size_t new_size = old_size + old_size;
|
||||
char *old_addr = xmmap (NULL, old_size, PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||||
old_addr[0] = 1;
|
||||
old_addr[old_size - 1] = 2;
|
||||
|
||||
char *fixed_addr = xmmap (NULL, new_size, PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||||
fixed_addr[0] = 1;
|
||||
fixed_addr[new_size - 1] = 2;
|
||||
|
||||
/* Test MREMAP_FIXED. */
|
||||
char *new_addr = mremap (old_addr, old_size, new_size,
|
||||
MREMAP_FIXED | MREMAP_MAYMOVE,
|
||||
fixed_addr);
|
||||
if (new_addr == MAP_FAILED)
|
||||
return mremap_failure_exit (errno);
|
||||
new_addr[0] = 1;
|
||||
new_addr[new_size - 1] = 2;
|
||||
xmunmap (new_addr, new_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
||||
25
sysdeps/generic/mremap-failure.h
Normal file
25
sysdeps/generic/mremap-failure.h
Normal file
@ -0,0 +1,25 @@
|
||||
/* mremap failure handling. Generic version.
|
||||
Copyright (C) 2024 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
/* Return exit value on mremap failure with errno ERR. */
|
||||
|
||||
static int
|
||||
mremap_failure_exit (int err)
|
||||
{
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
@ -205,6 +205,7 @@ tests += \
|
||||
tst-getauxval \
|
||||
tst-gettid \
|
||||
tst-gettid-kill \
|
||||
tst-linux-mremap1 \
|
||||
tst-memfd_create \
|
||||
tst-misalign-clone \
|
||||
tst-mlock2 \
|
||||
|
||||
30
sysdeps/unix/sysv/linux/mremap-failure.h
Normal file
30
sysdeps/unix/sysv/linux/mremap-failure.h
Normal file
@ -0,0 +1,30 @@
|
||||
/* mremap failure handling. Linux version.
|
||||
Copyright (C) 2024 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <support/check.h>
|
||||
|
||||
/* Return exit value on mremap failure with errno ERR. */
|
||||
|
||||
static int
|
||||
mremap_failure_exit (int err)
|
||||
{
|
||||
if (err != EINVAL)
|
||||
return EXIT_FAILURE;
|
||||
|
||||
return EXIT_UNSUPPORTED;
|
||||
}
|
||||
63
sysdeps/unix/sysv/linux/tst-linux-mremap1.c
Normal file
63
sysdeps/unix/sysv/linux/tst-linux-mremap1.c
Normal file
@ -0,0 +1,63 @@
|
||||
/* Test mremap with MREMAP_DONTUNMAP.
|
||||
Copyright (C) 2024 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/mman.h>
|
||||
#include <support/xstdlib.h>
|
||||
#include <support/xunistd.h>
|
||||
#include <support/check.h>
|
||||
#include <support/test-driver.h>
|
||||
#include <mremap-failure.h>
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
size_t old_size = getpagesize ();
|
||||
size_t new_size = old_size;
|
||||
char *old_addr = xmmap (NULL, old_size, PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||||
old_addr[0] = 1;
|
||||
old_addr[old_size - 1] = 2;
|
||||
|
||||
/* Create an available 64-page mmap region. */
|
||||
size_t fixed_size = old_size * 64;
|
||||
char *fixed_addr = xmmap (NULL, fixed_size, PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE | MAP_ANONYMOUS, -1);
|
||||
xmunmap (fixed_addr, fixed_size);
|
||||
|
||||
/* Add 3 * pagesize. */
|
||||
fixed_size += 3 * old_size;
|
||||
|
||||
/* Test MREMAP_DONTUNMAP. It should return FIXED_ADDR created above. */
|
||||
char *new_addr = mremap (old_addr, old_size, new_size,
|
||||
MREMAP_DONTUNMAP | MREMAP_MAYMOVE,
|
||||
fixed_addr);
|
||||
if (new_addr == MAP_FAILED)
|
||||
return mremap_failure_exit (errno);
|
||||
TEST_VERIFY_EXIT (fixed_addr == new_addr);
|
||||
old_addr[0] = 3;
|
||||
old_addr[old_size - 1] = 4;
|
||||
new_addr[0] = 1;
|
||||
new_addr[new_size - 1] = 2;
|
||||
xmunmap (new_addr, new_size);
|
||||
xmunmap (old_addr, old_size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
||||
Loading…
Reference in New Issue
Block a user