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Also, use u_rval for determining message size.
* mq.c (SYS_FUNC(mq_timedreceive)): Check for syserror and non-negative
u_rval before calling printstr on msg_ptr argument, or use printaddr otherwise;
provide u_rval as string size.
mq_flags field of struct mq_attr can contain only O_NONBLOCK flag (other
flags are treated as invalid by mq_getsetattr). Moreover, this field is
ignored by mq_open at all (O_NONBLOCK is set via oflag, not via attr
attribute).
* xlat/mq_attr_flags.in: New file.
* print_mq_attr.c: Include xlat/mq_attr_flags.h.
(printmqattr): New parameter, bool decode_flags; cast members of struct
mq_attr to long long type; use mq_attr_flags xlat for printing mq_flags;
print mq_flags as flags only in case decode_flags parameter is set
to true.
* mq.c (SYS_FUNC(mq_open)): Specify value of false for decode_flags
parameter of printmqattr call.
(SYS_FUNC(mq_getsetattr)): Specify value of true for decode_flags
parameter of printmqattr call.
* tests/mq.expected: Update expected output.
* mq.c (SYS_FUNC(mq_timedsend)): Change conversion specifier from "%lu"
to "%llu", use getarg_ull for obtaining msg_len parameter.
(SYS_FUNC(mq_timedreceive)): Likewise.
It is defined as int in <linux/posix_types.h>.
* mq.c (SYS_FUNC(mq_timedsend)): Use "%d" conversion specifier instead
of "%ld" for printing mqdes (0th parameter), cast parameter value to
int.
(SYS_FUNC(mq_timedreceive)): Likewise.
(SYS_FUNC(mq_notify)): Likewise.
(SYS_FUNC(mq_getsetattr)): Likewise.
* tests/file_handle.c: replace fcntl.h include with asm/unistd.h.
[MAX_HANDLE_SZ]: change to defined __NR_name_to_handle_at
&& defined __NR_open_by_handle_at, add fcntl.h include
[!MAX_HANDLE_SZ]: Add definition of MAX_HANDLE_SZ and struct
file_handle.
(main): Change name_to_handle_at and open_by_handle_at calls to syscall.
Since the only two flags supported are AT_SYMLINK_FOLLOW and
AT_EMPTY_PATH.
* xlat/name_to_handle_at_flags.in: New file.
* file_handle.c (SYS_FUNC(name_to_handle_at)): Use name_to_handle_at_flags
for printing flags parameter.
Curiously, kexec_load uses compat on x32/n32, so its parameters should
be 4 bytes in size on these ABIs.
* kexec.c (SYS_FUNC(kexec_load)): Use widen_to_ulong for casting
parameters to proper size on x32/n32.
Kernel declares flags parameter as long and looks like x32 and n32
implement no compat for this call.
* clone.c (SYS_FUNC(unshare)): Use getarg_ull and printflags64 for
obtaining and parsing flags parameter.
Not all clone flags could be passed to unshare (see check_unshare_flags
function in kernel/fork.c).
* xlat/unshare_flags.in: New file.
* clone.c (SYS_FUNC(unshare)): Use unshare_flags for printing flags
parameter.
nstype is not flag set but specific type value against which it is
compared in kernel (see kernel/nsproxy.c, SYSCALL_DEFINE2(setns, ...)).
* xlat/setns_types.in: New file.
* clone.c: Use printxval and setns_types for nstype parameter.
As init_module has no compat wrapper, its first parameter is a pointer
and the second is length, they both have the same size as kernel_ulong_t
type.
* bjm.c (SYS_FUNC(init_module)): Obtain first two parameters using
getarg_ull, print address argument using printaddr_ull, print length
argument using "%llu" conversion specifier.
* defs.h (printaddr_ull): New prototype.
(printaddr): Change to a static inline wrapper around printaddr_ull.
* util.c (printaddr): Rename to printaddr_ull, change argument type
to unsigned long long, change print format to %#llx.
* bjm.c (MODULE_INIT_IGNORE_MODVERSIONS, MODULE_INIT_IGNORE_VERMAGIC):
Remove.
* xlat/module_init_flags.in: Add values for
MODULE_INIT_IGNORE_MODVERSIONS and MODULE_INIT_IGNORE_VERMAGIC records.
Since create_module syscall is present only in kernels before Linux 2.6
and strace does not support those kernels, there is no use to keep this
parser any longer.
* bjm.c (SYS_FUNC(create_module)): Remove.
* linux/dummy.h (sys_create_module): Add stub alias.
This check had been done by print_array inside tprint_iov anyway.
* process_vm.c (SYS_FUNC(process_vm_readv)): Use tprint_iov_upto for
printing local_iov; do not check for syserror, provide decode_iov
parameter to tprint_iov{,_upto} based on its value instead.
This enables printing of iovec arrays even in case of failed syscall
(failed syscall doesn't mean that iovec itself is inaccessible and
useless). One caveat here is that we should explicitly provide proper
IOV_DECODE_* value based on syserror value in case printing is performed
on exiting; we can't simply override it to IOV_DECODE_ADDR on exiting
when syserror is up, since this may be called by code which tries to
print iovec containing local data, which should be perfectly accessible
(on the other hand, there are no cases of such behaviour at the moment).
Since iovecs themselves are printed even if syscall has failed now,
preadv test is updated to reflect this. It is notable, though, that this
is the only place where this case is checked.
* io.c (tprint_iov_upto): Specify umoven_or_printaddr_ignore_syserror
instead of umoven_or_printaddr as umoven_func parameter.
(SYS_FUNC(readv), do_preadv): Specify decode_iov parameter value
based on syserror(tcp) value.
* scsi.c: (print_sg_io_v3_res, print_sg_io_v4_res): Likewise.
* tests/preadv.c: Update expected output for the case when preadv
with singe-item iovec failed.
This change makes behaviour of umoven_or_printaddr_ignore_syserror in
line with umoven_or_printaddr when verbose flag is disabled.
* v4l2.c (umoven_or_printaddr_ignore_syserror): Simply call printaddr
when verbose flag is unset.
It is size_t and without compat on x32/n32.
* lookup_dcookie.c (SYS_FUNC(lookup_dcookie)): Change conversion
specifier from "%lu" to "%llu", use getarg_ull for len argument
retrieval.
Analogous to offsetof but returns structure offset after the specified
field. Useful for checking whether specific field is present in obtained
data or specifying amount of data to copy based on the (last) field needed.
* defs.h (offsetofend): New macro.
