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valgrind/valgrind-3.15.0-copy_file_range.patch

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commit 5f00db054a6f59502e9deeeb59ace2261207ee31
Author: Alexandra Hajkova <ahajkova@redhat.com>
Date: Thu May 2 08:24:02 2019 -0400
Add support for the copy_file_range syscall
Support amd64, x86, arm64, ppc64, ppc32 and s390x architectures.
Also add sys-copy_file_range test case.
diff --git a/configure.ac b/configure.ac
index d043ce3..3528925 100755
--- a/configure.ac
+++ b/configure.ac
@@ -4172,6 +4172,7 @@ AC_CHECK_FUNCS([ \
utimensat \
process_vm_readv \
process_vm_writev \
+ copy_file_range \
])
# AC_CHECK_LIB adds any library found to the variable LIBS, and links these
@@ -4187,6 +4188,8 @@ AM_CONDITIONAL([HAVE_PTHREAD_SPINLOCK],
[test x$ac_cv_func_pthread_spin_lock = xyes])
AM_CONDITIONAL([HAVE_PTHREAD_SETNAME_NP],
[test x$ac_cv_func_pthread_setname_np = xyes])
+AM_CONDITIONAL([HAVE_COPY_FILE_RANGE],
+ [test x$ac_cv_func_copy_file_range = xyes])
if test x$VGCONF_PLATFORM_PRI_CAPS = xMIPS32_LINUX \
-o x$VGCONF_PLATFORM_PRI_CAPS = xMIPS64_LINUX ; then
diff --git a/coregrind/m_syswrap/priv_syswrap-linux.h b/coregrind/m_syswrap/priv_syswrap-linux.h
index f76191a..1edf9eb 100644
--- a/coregrind/m_syswrap/priv_syswrap-linux.h
+++ b/coregrind/m_syswrap/priv_syswrap-linux.h
@@ -379,6 +379,7 @@ DECL_TEMPLATE(linux, sys_getsockname);
DECL_TEMPLATE(linux, sys_getpeername);
DECL_TEMPLATE(linux, sys_socketpair);
DECL_TEMPLATE(linux, sys_kcmp);
+DECL_TEMPLATE(linux, sys_copy_file_range);
// Some arch specific functions called from syswrap-linux.c
extern Int do_syscall_clone_x86_linux ( Word (*fn)(void *),
diff --git a/coregrind/m_syswrap/syswrap-amd64-linux.c b/coregrind/m_syswrap/syswrap-amd64-linux.c
index 30e7d0e..0c1d8d1 100644
--- a/coregrind/m_syswrap/syswrap-amd64-linux.c
+++ b/coregrind/m_syswrap/syswrap-amd64-linux.c
@@ -863,6 +863,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_statx, sys_statx), // 332
LINX_(__NR_membarrier, sys_membarrier), // 324
+
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 326
};
SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno )
diff --git a/coregrind/m_syswrap/syswrap-arm64-linux.c b/coregrind/m_syswrap/syswrap-arm64-linux.c
index 290320a..f66be2d 100644
--- a/coregrind/m_syswrap/syswrap-arm64-linux.c
+++ b/coregrind/m_syswrap/syswrap-arm64-linux.c
@@ -819,7 +819,7 @@ static SyscallTableEntry syscall_main_table[] = {
// (__NR_userfaultfd, sys_ni_syscall), // 282
LINX_(__NR_membarrier, sys_membarrier), // 283
// (__NR_mlock2, sys_ni_syscall), // 284
- // (__NR_copy_file_range, sys_ni_syscall), // 285
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 285
// (__NR_preadv2, sys_ni_syscall), // 286
// (__NR_pwritev2, sys_ni_syscall), // 287
// (__NR_pkey_mprotect, sys_ni_syscall), // 288
diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c
index 73ef98d..cd0ee74 100644
--- a/coregrind/m_syswrap/syswrap-linux.c
+++ b/coregrind/m_syswrap/syswrap-linux.c
@@ -12093,6 +12093,36 @@ POST(sys_bpf)
}
}
+PRE(sys_copy_file_range)
+{
+ PRINT("sys_copy_file_range (%lu, %lu, %lu, %lu, %lu, %lu)", ARG1, ARG2, ARG3,
+ ARG4, ARG5, ARG6);
+
+ PRE_REG_READ6(vki_size_t, "copy_file_range",
+ int, "fd_in",
+ vki_loff_t *, "off_in",
+ int, "fd_out",
+ vki_loff_t *, "off_out",
+ vki_size_t, "len",
+ unsigned int, "flags");
+
+ /* File descriptors are "specially" tracked by valgrind.
+ valgrind itself uses some, so make sure someone didn't
+ put in one of our own... */
+ if (!ML_(fd_allowed)(ARG1, "copy_file_range(fd_in)", tid, False) ||
+ !ML_(fd_allowed)(ARG3, "copy_file_range(fd_in)", tid, False)) {
+ SET_STATUS_Failure( VKI_EBADF );
+ } else {
+ /* Now see if the offsets are defined. PRE_MEM_READ will
+ double check it can dereference them. */
+ if (ARG2 != 0)
+ PRE_MEM_READ( "copy_file_range(off_in)", ARG2, sizeof(vki_loff_t));
+ if (ARG4 != 0)
+ PRE_MEM_READ( "copy_file_range(off_out)", ARG4, sizeof(vki_loff_t));
+ }
+}
+
+
#undef PRE
#undef POST
diff --git a/coregrind/m_syswrap/syswrap-ppc32-linux.c b/coregrind/m_syswrap/syswrap-ppc32-linux.c
index f812f1f..71f208d 100644
--- a/coregrind/m_syswrap/syswrap-ppc32-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc32-linux.c
@@ -1021,6 +1021,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_getrandom, sys_getrandom), // 359
LINXY(__NR_memfd_create, sys_memfd_create), // 360
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 379
+
LINXY(__NR_statx, sys_statx), // 383
};
diff --git a/coregrind/m_syswrap/syswrap-ppc64-linux.c b/coregrind/m_syswrap/syswrap-ppc64-linux.c
index eada099..1a42c1f 100644
--- a/coregrind/m_syswrap/syswrap-ppc64-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc64-linux.c
@@ -1007,6 +1007,8 @@ static SyscallTableEntry syscall_table[] = {
LINX_(__NR_membarrier, sys_membarrier), // 365
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 379
+
LINXY(__NR_statx, sys_statx), // 383
};
diff --git a/coregrind/m_syswrap/syswrap-s390x-linux.c b/coregrind/m_syswrap/syswrap-s390x-linux.c
index ad78384..41ada8d 100644
--- a/coregrind/m_syswrap/syswrap-s390x-linux.c
+++ b/coregrind/m_syswrap/syswrap-s390x-linux.c
@@ -854,6 +854,8 @@ static SyscallTableEntry syscall_table[] = {
LINXY(__NR_recvmsg, sys_recvmsg), // 372
LINX_(__NR_shutdown, sys_shutdown), // 373
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 375
+
LINXY(__NR_statx, sys_statx), // 379
};
diff --git a/coregrind/m_syswrap/syswrap-x86-linux.c b/coregrind/m_syswrap/syswrap-x86-linux.c
index f05619e..f8d97ea 100644
--- a/coregrind/m_syswrap/syswrap-x86-linux.c
+++ b/coregrind/m_syswrap/syswrap-x86-linux.c
@@ -1608,6 +1608,8 @@ static SyscallTableEntry syscall_table[] = {
LINX_(__NR_membarrier, sys_membarrier), // 375
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 377
+
LINXY(__NR_statx, sys_statx), // 383
/* Explicitly not supported on i386 yet. */
diff --git a/memcheck/tests/linux/Makefile.am b/memcheck/tests/linux/Makefile.am
index d7515d9..00e99a5 100644
--- a/memcheck/tests/linux/Makefile.am
+++ b/memcheck/tests/linux/Makefile.am
@@ -20,6 +20,7 @@ EXTRA_DIST = \
stack_switch.stderr.exp stack_switch.vgtest \
syscalls-2007.vgtest syscalls-2007.stderr.exp \
syslog-syscall.vgtest syslog-syscall.stderr.exp \
+ sys-copy_file_range.vgtest sys-copy_file_range.stderr.exp \
sys-openat.vgtest sys-openat.stderr.exp sys-openat.stdout.exp \
sys-statx.vgtest sys-statx.stderr.exp \
timerfd-syscall.vgtest timerfd-syscall.stderr.exp \
@@ -49,6 +50,10 @@ if HAVE_AT_FDCWD
check_PROGRAMS += sys-openat
endif
+if HAVE_COPY_FILE_RANGE
+ check_PROGRAMS += sys-copy_file_range
+endif
+
AM_CFLAGS += $(AM_FLAG_M3264_PRI)
AM_CXXFLAGS += $(AM_FLAG_M3264_PRI)
diff --git a/memcheck/tests/linux/sys-copy_file_range.c b/memcheck/tests/linux/sys-copy_file_range.c
new file mode 100644
index 0000000..83981c6
--- /dev/null
+++ b/memcheck/tests/linux/sys-copy_file_range.c
@@ -0,0 +1,67 @@
+#define _GNU_SOURCE
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+ int fd_in, fd_out;
+ struct stat stat;
+ loff_t len, ret;
+
+ fd_in = open("copy_file_range_source", O_CREAT | O_RDWR);
+ if (fd_in == -1) {
+ perror("open copy_file_range_source");
+ exit(EXIT_FAILURE);
+ }
+
+ if (write(fd_in, "foo bar\n", 8) != 8) {
+ perror("writing to the copy_file_range_source");
+ exit(EXIT_FAILURE);
+ }
+ lseek(fd_in, 0, SEEK_SET);
+
+ if (fstat(fd_in, &stat) == -1) {
+ perror("fstat");
+ exit(EXIT_FAILURE);
+ }
+
+ len = stat.st_size;
+
+ fd_out = open("copy_file_range_dest", O_CREAT | O_WRONLY | O_TRUNC, 0644);
+ if (fd_out == -1) {
+ perror("open copy_file_range_dest");
+ exit(EXIT_FAILURE);
+ }
+
+ /* Check copy_file_range called with the correct arguments works. */
+ do {
+ ret = copy_file_range(fd_in, NULL, fd_out, NULL, len, 0);
+ if (ret == -1) {
+ perror("copy_file_range");
+ exit(EXIT_FAILURE);
+ }
+
+ len -= ret;
+ } while (len > 0);
+
+ /* Check valgrind will produce expected warnings for the
+ various wrong arguments. */
+ do {
+ void *t;
+ void *z = (void *) -1;
+
+ ret = copy_file_range(fd_in, t, fd_out, NULL, len, 0);
+ ret = copy_file_range(fd_in, NULL, fd_out, z, len, 0);
+ ret = copy_file_range(- 1, NULL, - 1, NULL, len, 0);
+ } while (0);
+
+ close(fd_in);
+ close(fd_out);
+ unlink("copy_file_range_source");
+ unlink("copy_file_range_dest");
+ exit(EXIT_SUCCESS);
+}
diff --git a/memcheck/tests/linux/sys-copy_file_range.stderr.exp b/memcheck/tests/linux/sys-copy_file_range.stderr.exp
new file mode 100644
index 0000000..1aa4dc2
--- /dev/null
+++ b/memcheck/tests/linux/sys-copy_file_range.stderr.exp
@@ -0,0 +1,21 @@
+
+Syscall param copy_file_range("off_in") contains uninitialised byte(s)
+ ...
+ by 0x........: main (sys-copy_file_range.c:57)
+
+Syscall param copy_file_range(off_out) points to unaddressable byte(s)
+ ...
+ by 0x........: main (sys-copy_file_range.c:58)
+ Address 0x........ is not stack'd, malloc'd or (recently) free'd
+
+Warning: invalid file descriptor -1 in syscall copy_file_range(fd_in)()
+
+HEAP SUMMARY:
+ in use at exit: 0 bytes in 0 blocks
+ total heap usage: 0 allocs, 0 frees, 0 bytes allocated
+
+For a detailed leak analysis, rerun with: --leak-check=full
+
+Use --track-origins=yes to see where uninitialised values come from
+For lists of detected and suppressed errors, rerun with: -s
+ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
diff --git a/memcheck/tests/linux/sys-copy_file_range.vgtest b/memcheck/tests/linux/sys-copy_file_range.vgtest
new file mode 100644
index 0000000..b7741e8
--- /dev/null
+++ b/memcheck/tests/linux/sys-copy_file_range.vgtest
@@ -0,0 +1,2 @@
+prereq: test -e sys-copy_file_range
+prog: sys-copy_file_range
commit bd27ad3ff31555484b7fdb310c4b033620882e44
Author: Mark Wielaard <mark@klomp.org>
Date: Sun May 5 16:01:41 2019 +0200
Hook linux copy_file_range syscall on arm.
diff --git a/coregrind/m_syswrap/syswrap-arm-linux.c b/coregrind/m_syswrap/syswrap-arm-linux.c
index 9f1bdab..9ba0665 100644
--- a/coregrind/m_syswrap/syswrap-arm-linux.c
+++ b/coregrind/m_syswrap/syswrap-arm-linux.c
@@ -1016,6 +1016,8 @@ static SyscallTableEntry syscall_main_table[] = {
LINXY(__NR_getrandom, sys_getrandom), // 384
LINXY(__NR_memfd_create, sys_memfd_create), // 385
+ LINX_(__NR_copy_file_range, sys_copy_file_range), // 391
+
LINXY(__NR_statx, sys_statx), // 397
};
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