commit 5f00db054a6f59502e9deeeb59ace2261207ee31 Author: Alexandra Hajkova 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 +#include +#include +#include +#include +#include + +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 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 };