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As most syscalls on x32 and mips n32 are actually 64-bit,
check that 64-bit syscall arguments are decoded properly.
This also workarounds x32 gcc sign extension bug
reported by Eugene Syromyatnikov at
https://sourceforge.net/p/strace/mailman/message/35150860/
* tests/nsyscalls.c: Include "kernel_types.h".
(main): Change the type of syscall arguments to kernel_ulong_t.
* mmsghdr.c (decode_mmsgvec): Clear syserror for the time of printing
struct mmsghdr array in !use_msg_len case.
(SYS_FUNC(sendmmsg)): As failed sendmmsg syscall does not
set msg_len fields, tell this to decode_mmsgvec.
* tests/mmsg_name.c (test_mmsg_name): Check it.
* defs.h (decode_mmsgvec): Add int argument.
* mmsghdr.c (print_struct_mmsghdr_config): Add msg_len_vlen field.
(print_struct_mmsghdr): Print struct mmsghdr.msg_len only for
msg_len_vlen first elements of struct mmsghdr array.
(decode_mmsgvec): Add msg_len_vlen argument.
(SYS_FUNC(sendmmsg), SYS_FUNC(recvmmsg)): Pass to decode_mmsgvec
the number of elements of struct mmsghdr array that contain meaningful
struct mmsghdr.msg_len.
* tests/mmsg_name.c (test_mmsg_name): Check it.
* tests/tests.h (recv_mmsg, send_mmsg): New prototype.
* tests/libmmsg.c: New file.
* tests/Makefile.am (libtests_a_SOURCES): Add it.
* tests/mmsg.c Do not check for __NR_sendmmsg, __NR_recvmmsg,
HAVE_SENDMMSG, and HAVE_RECVMMSG. Do not include unused headers.
(recv_mmsg, send_mmsg): Remove.
IOV_MAX appears to be more portable than UIO_MAXIOV.
* msghdr.c: Include <limits.h>. Remove fallback defintion of UIO_MAXIOV.
(get_optmem_max): Replace UIO_MAXIOV with IOV_MAX.
* tests/msg_control.c: Likewise.
Sadly, musl recvmsg wrapper blindly dereferences 2nd argument,
so limit the affected part of the test to glibc that doesn't.
* tests/msg_name.c (test_msg_name) [!__GLIBC__]: Do not test
with inaccessible 2nd argument.
BLKDAXGET was removed by linux kernel commit v4.7-rc1~78^2^2~4.
* block.c: Do not define BLKDAXGET.
(block_ioctl): Remove BLKDAXGET support.
* tests/ioctl_block.c (main): Remove BLKDAXGET test.
* net.c (decode_sockname): Print both user and kernel address lengths
when the value changes.
* tests/net-y-unix.c (main): Update expected output.
* tests/net-yy-unix.c (main): Likewise.
* tests/net.expected: Likewise.
* net.c (decode_sockname): Print both user and kernel address lengths
when the returned address is truncated.
* tests/sun_path.expected: Update expected output.
Handle multipart netlink messages made of multiple struct nlmsghdr
headers with associated payload in one byte stream.
* netlink.c (fetch_nlmsghdr, print_nlmsghdr,
decode_nlmsghdr_with_payload): New functions.
(decode_netlink): Use them.
* tests/netlink_parsing.c (send_query): Check them.
* tests/netlink_protocol.c (send_query): Check that no part
of netlink message is fetched beyond the end of message.
Check decoding of zero address and zero length messages.
Check decoding of messages with nlmsg_len exceeding message length.
Limit output of struct msghdr.msg_control when
struct msghdr.msg_controllen is greater than the maximum ancillary
buffer size specified in /proc/sys/net/core/optmem_max file.
* configure.ac (AC_CHECK_FUNCS): Add open64.
* defs.h (read_int_from_file): New prototype.
* util.c (read_int_from_file): New function.
* msghdr.c (get_optmem_max): New function based on read_int_from_file.
(decode_msg_control): Use it to check control_len argument.
* tests/msg_control.c (test_big_len): New function.
(main): Use it to test printing of excessively large messages.
* msghdr.c (print_cmsg_ip_opts): Do not print more than max_strlen
bytes of ip options in abbrev mode.
* tests/msg_control.c (print_ip_opts): Use DEFAULT_STRLEN.
(test_sol_ip): Test IP_RETOPTS output in abbrev mode.
* msghdr.c (print_scm_rights): Do not print more than max_strlen
descriptors in abbrev mode.
* tests/msg_control.c (DEFAULT_STRLEN): New macro.
(print_fds): Use it.
(test_scm_rights3): New function.
(main): Use it to test SCM_RIGHTS output in abbrev mode.
* tests/msg_control-v.c: New file.
* tests/msg_control-v.test: New test.
* tests/.gitignore: Add msg_control-v.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add msg_control-v.test.
* fetch_struct_msghdr.c: New file.
* fetch_struct_mmsghdr.c: Likewise.
* Makefile.am (strace_SOURCES): Add them.
* net.c (struct msghdr32, struct mmsghdr32, copy_from_msghdr32,
fetch_msghdr, fetch_mmsghdr): Remove.
(decode_msghdr, dumpiov_in_msghdr): Use fetch_struct_msghdr instead
of fetch_msghdr.
(decode_mmsghdr): Change msg_len argument to use_msg_len.
Use fetch_struct_mmsghdr instead of fetch_mmsghdr.
Return fetch_struct_mmsghdr's return code.
(decode_mmsg): Rename to decode_mmsgvec. Take addr and len arguments.
Do not print vlen and flags. Check decode_mmsghdr's return code.
Print mmsghdr array using square brackets.
(dumpiov_in_mmsghdr): Use fetch_struct_mmsghdr instead of fetch_mmsghdr.
(SYS_FUNC(sendmmsg), SYS_FUNC(recvmmsg)): Use decode_mmsgvec instead
of decode_mmsg. Print vlen and flags.
* tests/mmsg.c (main): Update expected output.
* msghdr.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* net.c: Include it. Move fallback definition of struct mmsghdr there.
* tests/mmsg.c: Include "msghdr.h". Remove fallback definition
of struct mmsghdr.
* net.c (printcmsghdr): Skip control messages of zero length.
Always print "msg_control=" before the control message.
(do_msghdr): Print control message before its length, not after.
* tests/inet-cmsg.c (main): Update expected output.
* tests/scm_rights-fd.test: Likewise.
As these constants have the same value 1, let's use and print only one
of them, e.g. AF_UNIX.
* xlat/addrfams.in (AF_LOCAL): Remove.
* tests/net-accept-connect.c (main): Replace AF_LOCAL with AF_UNIX.
* tests/net-y-unix.c: Likewise.
* tests/net-yy-unix.c: Likewise.
* tests/netlink_unix_diag.c: Likewise.
Fix build with fresh <linux/btrfs.h> that provides a slightly different
definition of struct btrfs_ioctl_defrag_range_args.
* btrfs.c (btrfs_ioctl): Cast "len" member of
struct btrfs_ioctl_defrag_range_args to uint64_t.
* tests/btrfs.c (btrfs_print_defrag_range_args): Cast "start" and "len"
members of struct btrfs_ioctl_defrag_range_args to uint64_t.
<linux/btrfs.h> was introduced in linux v3.9-rc1 while some
of btrfs ioctls were added later, e.g. BTRFS_IOC_QUOTA_RESCAN
and BTRFS_IOC_QUOTA_RESCAN_STATUS in v3.10-rc2,
or BTRFS_IOC_QUOTA_RESCAN_WAIT in v3.11-rc1.
* btrfs.c [!BTRFS_IOC_QUOTA_RESCAN]
(struct btrfs_ioctl_quota_rescan_args): New structure.
(BTRFS_IOC_QUOTA_RESCAN, BTRFS_IOC_QUOTA_RESCAN_STATUS): New macros.
[!BTRFS_IOC_QUOTA_RESCAN_WAIT] (BTRFS_IOC_QUOTA_RESCAN_WAIT): New macro.
* tests/btrfs.c: Likewise.
Reported-by: Li Er <phoooyb@gmail.com>
