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Change the way how subsequent -e fault= expressions are interpreted
to implement a cumulative behavior. For example,
-e fault=file:when=3+ -e fault=chdir
now specifies that all chdir syscalls and 3+ file related syscalls
except chdir are subject for fault injection.
* syscall.c (qualify): Do not reset qual_vec for QUAL_FAULT.
* tests/fault_injection.test: Check it.
Introduce new -e fault=EXPR syntax that can be used to specify a subset
of syscalls that are subject of syscall fault injection, an error code
that has to be injected, and a frequency of injection.
The expression specifying syscall fault injection has the following
format: SET[:error=ERRNO][:when=FIRST[+[STEP]]]
where only SET is a required part and all the rest is optional.
The method used to implement syscall fault injection is the following:
on entering syscall the syscall number is substituted by an invalid
syscall number -1, and on exiting syscall the error code returned by
the kernel is substituted with the error code specified in the fault
expression.
This implementaion is based on the prototype developed
by Nahim El Atmani as a part of his GSoC 2016 strace project.
* defs.h (struct fault_opts): New forward declaration.
(struct tcb): Add fault_vec field.
(TCB_FAULT_INJ, QUAL_FAULT): New macros.
* strace.1: Document -e fault expression syntax.
* strace.c (usage): Mention -e fault expression.
(droptcb): Deallocate fault_vec member.
* syscall.c (qual_fault, arch_set_scno, arch_set_error): New prototypes.
(qual_options): Add "fault" option.
(struct fault_opts): New structure.
(num_faults): New variable.
(fault_vec): New array.
(syscall_fault_injected, tcb_fault_opts, reallocate_fault,
find_errno_by_name, qual_syscall_ex, strip_prefix, parse_fault_token,
parse_fault_expression, qual_fault, inject_syscall_fault_entering,
update_syscall_fault_exiting): New functions.
(qual_syscall): Use qual_syscall_ex.
(qualify_one): Add argument: a pointer to struct fault_opts, all callers
changed. Copy struct fault_opts from the pointer to fault_vec.
Use reallocate_fault.
(qualify_scno, qualify_syscall_class, qualify_syscall_name): Add
argument: a pointer to struct fault_opts.
(qualify): Use reallocate_fault. Do not check "all" class for
QUAL_FAULT qualifier.
(lookup_class): Check for "all" class.
(trace_syscall_entering): Use inject_syscall_fault_entering.
(trace_syscall_exiting): Use update_syscall_fault_exiting. Clear
TCB_FAULT_INJ flag along with TCB_INSYSCALL. Print " (INJECTED)" suffix
when the syscall has been injected successfully.
[ARCH_REGS_FOR_GETREGSET && !HAVE_GETREGS_OLD]
(ptrace_setregset): New function.
(ptrace_setregset_or_setregs): Define to ptrace_setregset.
[ARCH_REGS_FOR_GETREGS && !HAVE_GETREGS_OLD]
(ptrace_setregs): New function.
(ptrace_setregset_or_setregs): Define to ptrace_setregs.
[ptrace_setregset_or_setregs] (set_regs): New function.
Include "set_scno.c" and "set_error.c"
* NEWS: Mention this enhancement.
The incomplete CRIS support introduced by commit v4.5.18-77-gea0e6e8
should not have been merged because it lacks essential parts, e.g.
syscall tables.
This change adds missing syscall tables for crisv10 and crisv32.
* linux/crisv10/syscallent.h: New file.
* linux/crisv32/syscallent.h: Likewise.
* Makefile.am (EXTRA_DIST): Add them.
* defs.h (string_to_uint_ex): New prototype.
(string_to_uint_upto): New function, a thin wrapper around
string_to_uint_ex.
* util.c (string_to_uint_ex): New function.
(string_to_uint): Change into a thin wrapper around string_to_uint_upto.
* strace.c (init): Use string_to_uint_upto.
* syscall.c (qualify_scno, qual_signal, qual_desc): Use
string_to_uint_upto instead of string_to_uint.
Split qual_syscall into qualify_scno, qualify_syscall_class,
and qualify_syscall_name.
This might be needed later to implement syscall fault injection.
* syscall.c (qualify_scno, qualify_syscall_class, qualify_syscall_name):
New functions.
(qual_syscall): Use them.
ioctl_block.c:48: warning: 'init_magic' defined but not used
* tests/ioctl_block.c (init_magic): Define only for
[BLKTRACESETUP && HAVE_STRUCT_BLK_USER_TRACE_SETUP].
alarm.c: In function 'main':
alarm.c:41: warning: integer constant is too large for 'long' type
aio.c: In function 'main':
aio.c:162: warning: integer constant is too large for 'long' type
btrfs.c: In function 'btrfs_test_sync_ioctls':
btrfs.c:202: warning: integer constant is too large for 'long' type
btrfs.c: In function 'btrfs_test_subvol_ioctls':
btrfs.c:289: warning: integer constant is too large for 'long' type
btrfs.c:290: warning: integer constant is too large for 'long' type
dup2.c: In function 'main':
dup2.c:12: warning: integer constant is too large for 'long' type
dup2.c:13: warning: integer constant is too large for 'long' type
dup3.c: In function 'main':
dup3.c:13: warning: integer constant is too large for 'long' type
dup3.c:14: warning: integer constant is too large for 'long' type
epoll_create.c: In function 'main':
epoll_create.c:12: warning: integer constant is too large for 'long' type
epoll_ctl.c: In function 'invoke_syscall':
epoll_ctl.c:14: warning: integer constant is too large for 'long' type
faccessat.c: In function 'main':
faccessat.c:13: warning: integer constant is too large for 'long' type
fchdir.c: In function 'main':
fchdir.c:12: warning: integer constant is too large for 'long' type
struct_flock.c: In function 'invoke_test_syscall':
struct_flock.c:48: warning: integer constant is too large for 'long' type
struct_flock.c: In function 'test_flock_einval':
struct_flock.c:58: warning: integer constant is too large for 'long' type
struct_flock.c:59: warning: integer constant is too large for 'long' type
fcntl64.c: In function 'test_flock64_einval':
fcntl64.c:44: warning: integer constant is too large for 'long' type
fcntl64.c:45: warning: integer constant is too large for 'long' type
fcntl.c: In function 'test_flock64_einval':
fcntl.c:44: warning: integer constant is too large for 'long' type
fcntl.c:45: warning: integer constant is too large for 'long' type
fdatasync.c: In function 'main':
fdatasync.c:12: warning: integer constant is too large for 'long' type
flock.c: In function 'main':
flock.c:13: warning: integer constant is too large for 'long' type
xstatx.c: In function 'main':
xstatx.c:255: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:290: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatx.c:294: warning: integer constant is too large for 'long' type
xstatfsx.c: In function 'main':
xstatfsx.c:113: warning: integer constant is too large for 'long' type
fsync.c: In function 'main':
fsync.c:12: warning: integer constant is too large for 'long' type
ftruncate64.c: In function 'main':
ftruncate64.c:39: warning: integer constant is too large for 'long' type
futimesat.c: In function 'main':
futimesat.c:52: warning: integer constant is too large for 'long' type
futimesat.c:59: warning: integer constant is too large for 'long' type
get_mempolicy.c: In function 'main':
get_mempolicy.c:83: warning: integer constant is too large for 'long' type
get_mempolicy.c:84: warning: integer constant is too large for 'long' type
get_mempolicy.c:85: warning: integer constant is too large for 'long' type
get_mempolicy.c:86: warning: integer constant is too large for 'long' type
getdents.c: In function 'main':
getdents.c:109: warning: integer constant is too large for 'long' type
getdents.c:110: warning: integer constant is too large for 'long' type
getdents.c:114: warning: integer constant is too large for 'long' type
getdents64.c: In function 'main':
getdents64.c:114: warning: integer constant is too large for 'long' type
getdents64.c:115: warning: integer constant is too large for 'long' type
getdents64.c:119: warning: integer constant is too large for 'long' type
xgetrlimit.c: In function 'main':
xgetrlimit.c:71: warning: integer constant is too large for 'long' type
ioctl_block.c:44: warning: integer constant is too large for 'long' type
ioctl_block.c: In function 'main':
ioctl_block.c:136: warning: integer constant is too large for 'long' type
ioctl_block.c:137: warning: integer constant is too large for 'long' type
ioctl_block.c:161: warning: integer constant is too large for 'long' type
ioctl_block.c:170: warning: integer constant is too large for 'long' type
ioctl_block.c:171: warning: integer constant is too large for 'long' type
ioctl_evdev.c:42: warning: integer constant is too large for 'long' type
ioctl_mtd.c:46: warning: integer constant is too large for 'long' type
ioctl_rtc.c:40: warning: integer constant is too large for 'long' type
ioperm.c: In function 'main':
ioperm.c:12: warning: integer constant is too large for 'long' type
ioctl_v4l2.c: In function 'main':
ioctl_v4l2.c:409: warning: integer constant is too large for 'long' type
ipc.c: In function 'ipc_call':
ipc.c:52: warning: integer constant is too large for 'long' type
kill.c: In function 'main':
kill.c:59: warning: integer constant is too large for 'long' type
kill.c:62: warning: integer constant is too large for 'long' type
kill.c:63: warning: integer constant is too large for 'long' type
kill.c:68: warning: integer constant is too large for 'long' type
linkat.c: In function 'main':
linkat.c:14: warning: integer constant is too large for 'long' type
linkat.c:15: warning: integer constant is too large for 'long' type
mbind.c: In function 'main':
mbind.c:41: warning: integer constant is too large for 'long' type
mbind.c:43: warning: integer constant is too large for 'long' type
mbind.c:44: warning: integer constant is too large for 'long' type
migrate_pages.c: In function 'main':
migrate_pages.c:41: warning: integer constant is too large for 'long' type
In file included from mkdirat.c:10:
umode_t.c: In function 'test_syscall':
umode_t.c:47: warning: integer constant is too large for 'long' type
mknod.c: In function 'call_mknod':
mknod.c:16: warning: integer constant is too large for 'long' type
mknod.c: In function 'main':
mknod.c:23: warning: integer constant is too large for 'long' type
mknod.c:49: warning: integer constant is too large for 'long' type
mknod.c:56: warning: integer constant is too large for 'long' type
mknodat.c:12: warning: integer constant is too large for 'long' type
mknodat.c: In function 'call_mknodat':
mknodat.c:17: warning: integer constant is too large for 'long' type
mknodat.c: In function 'main':
mknodat.c:24: warning: integer constant is too large for 'long' type
mknodat.c:50: warning: integer constant is too large for 'long' type
mknodat.c:57: warning: integer constant is too large for 'long' type
mmap.c: In function 'main':
mmap.c:51: warning: integer constant is too large for 'long' type
move_pages.c: In function 'print_stat_pages':
move_pages.c:139: warning: integer constant is too large for 'long' type
move_pages.c: In function 'print_move_pages':
move_pages.c:166: warning: integer constant is too large for 'long' type
move_pages.c: In function 'main':
move_pages.c:188: warning: integer constant is too large for 'long' type
mq_sendrecv.c: In function 'main':
mq_sendrecv.c:238: warning: integer constant is too large for 'long' type
mq_sendrecv.c:401: warning: integer constant is too large for 'long' type
mq_sendrecv.c:403: warning: integer constant is too large for 'long' type
nsyscalls.c: In function 'test_syscall':
nsyscalls.c:64: warning: integer constant is too large for 'long' type
nsyscalls.c:65: warning: integer constant is too large for 'long' type
nsyscalls.c:66: warning: integer constant is too large for 'long' type
nsyscalls.c:67: warning: integer constant is too large for 'long' type
nsyscalls.c:68: warning: integer constant is too large for 'long' type
nsyscalls.c:69: warning: integer constant is too large for 'long' type
preadv-pwritev.c: In function 'main':
preadv-pwritev.c:162: warning: comparison between signed and unsigned
prlimit64.c: In function 'main':
prlimit64.c:65: warning: integer constant is too large for 'long' type
prlimit64.c:70: warning: integer constant is too large for 'long' type
remap_file_pages.c: In function 'main':
remap_file_pages.c:42: warning: integer constant is too large for 'long' type
remap_file_pages.c:43: warning: integer constant is too large for 'long' type
remap_file_pages.c:45: warning: integer constant is too large for 'long' type
renameat.c: In function 'main':
renameat.c:15: warning: integer constant is too large for 'long' type
renameat.c:16: warning: integer constant is too large for 'long' type
rt_sigqueueinfo.c: In function 'main':
rt_sigqueueinfo.c:41: warning: integer constant is too large for 'long' type
rt_tgsigqueueinfo.c: In function 'k_tgsigqueueinfo':
rt_tgsigqueueinfo.c:45: warning: integer constant is too large for 'long' type
rt_tgsigqueueinfo.c:46: warning: integer constant is too large for 'long' type
rt_tgsigqueueinfo.c:47: warning: integer constant is too large for 'long' type
rt_tgsigqueueinfo.c: In function 'main':
rt_tgsigqueueinfo.c:67: warning: integer constant is too large for 'long' type
sendfile.c: In function 'main':
sendfile.c:110: warning: integer constant is too large for 'long' type
sendfile64.c: In function 'main':
sendfile64.c💯 warning: integer constant is too large for 'long' type
set_mempolicy.c: In function 'main':
set_mempolicy.c:129: warning: integer constant is too large for 'long' type
set_mempolicy.c:130: warning: integer constant is too large for 'long' type
setrlimit.c: In function 'main':
setrlimit.c:44: warning: integer constant is too large for 'long' type
socketcall.c: In function 'test_socketcall':
socketcall.c:58: warning: integer constant is too large for 'long' type
splice.c: In function 'main':
splice.c:41: warning: integer constant is too large for 'long' type
splice.c:42: warning: integer constant is too large for 'long' type
splice.c:45: warning: integer constant is too large for 'long' type
splice.c:46: warning: integer constant is too large for 'long' type
symlinkat.c: In function 'main':
symlinkat.c:12: warning: integer constant is too large for 'long' type
sync_file_range.c: In function 'main':
sync_file_range.c:42: warning: integer constant is too large for 'long' type
sync_file_range.c:43: warning: integer constant is too large for 'long' type
syslog.c: In function 'main':
syslog.c:14: warning: integer constant is too large for 'long' type
tee.c: In function 'main':
tee.c:41: warning: integer constant is too large for 'long' type
tee.c:42: warning: integer constant is too large for 'long' type
timer_create.c: In function 'main':
timer_create.c:52: warning: integer constant is too large for 'long' type
timer_create.c:84: warning: integer constant is too large for 'long' type
timer_create.c:85: warning: integer constant is too large for 'long' type
truncate64.c: In function 'main':
truncate64.c:41: warning: integer constant is too large for 'long' type
xgetrlimit.c: In function 'main':
xgetrlimit.c:71: warning: integer constant is too large for 'long' type
umode_t.c: In function 'test_syscall':
umode_t.c:46: warning: integer constant is too large for 'long' type
unlinkat.c: In function 'main':
unlinkat.c:13: warning: integer constant is too large for 'long' type
waitpid.c: In function 'main':
waitpid.c:43: warning: integer constant is too large for 'long' type
waitid.c: In function 'poison':
waitid.c:141: warning: integer constant is too large for 'long' type
xetpriority.c: In function 'main':
xetpriority.c:15: warning: integer constant is too large for 'long' type
xetpriority.c:19: warning: integer constant is too large for 'long' type
xetpriority.c:20: warning: integer constant is too large for 'long' type
xetpgid.c: In function 'main':
xetpgid.c:43: warning: integer constant is too large for 'long' type
xetpgid.c:47: warning: integer constant is too large for 'long' type
xetpgid.c:48: warning: integer constant is too large for 'long' type
(SLES 11SP4, i386)
* tests/alarm.c (main): Add proper suffix to integer constant.
* tests/aio.c (main): Likewise.
* tests/btrfs.c (btrfs_test_sync_ioctls, btrfs_test_subvol_ioctls): Likewise.
* tests/dup2.c (main): Likewise.
* tests/dup3.c (main): Likewise.
* tests/epoll_create.c (main): Likewise.
* tests/epoll_ctl.c (invoke_syscall): Likewise.
* tests/faccessat.c (main): Likewise.
* tests/fchdir.c (main): Likewise.
* tests/fcntl.c (test_flock64_einval): Likewise.
* tests/fcntl64.c (test_flock64_einval): Likewise.
* tests/fdatasync.c (main): Likewise.
* tests/flock.c (main): Likewise.
* tests/fstat64.c (SAMPLE_SIZE): Likewise.
* tests/fstat.c (SAMPLE_SIZE): Likewise.
* tests/fsync.c (main): Likewise.
* tests/ftruncate64.c (main): Likewise.
* tests/futimesat.c (main): Likewise.
* tests/get_mempolicy.c (main): Likewise.
* tests/getdents.c (main): Likewise.
* tests/getdents64.c (main): Likewise.
* tests/ioctl_block.c (lmagic, main): Likewise.
* tests/ioctl_evdev.c (lmagic): Likewise.
* tests/ioctl_mtd.c (lmagic): Likewise.
* tests/ioctl_rtc.c (lmagic): Likewise.
* tests/ioctl_v4l2.c (main): Likewise.
* tests/ioperm.c (main): Likewise.
* tests/ipc.c (ipc_call): Likewise.
* tests/kill.c (main): Likewise.
* tests/linkat.c (main): Likewise.
* tests/lstat64.c (SAMPLE_SIZE): Likewise.
* tests/lstat.c (SAMPLE_SIZE): Likewise.
* tests/mbind.c (main): Likewise.
* tests/migrate_pages.c (main): Likewise.
* tests/mkdirat.c (TEST_SYSCALL_PREFIX_ARGS): Likewise.
* tests/mknod.c (call_mknod, main): Likewise.
* tests/mknodat.c (fd, call_mknodat, main): Likewise.
* tests/mmap.c (main): Likewise.
* tests/move_pages.c (print_stat_pages, print_move_pages): Likewise.
* tests/mq_sendrecv.c (main): Likewise.
* tests/nsyscalls.c (test_syscall): Likewise.
* tests/prlimit64.c (main): Likewise.
* tests/remap_file_pages.c (main): Likewise.
* tests/renameat.c (main): Likewise.
* tests/rt_sigqueueinfo.c (main): Likewise.
* tests/rt_tgsigqueueinfo.c (k_tgsigqueueinfo, main): Likewise.
* tests/sendfile.c (main): Likewise.
* tests/sendfile64.c (main): Likewise.
* tests/set_mempolicy.c (main): Likewise.
* tests/setrlimit.c (main): Likewise.
* tests/socketcall.c (test_socketcall): Likewise.
* tests/splice.c (main): Likewise.
* tests/stat64.c (SAMPLE_SIZE): Likewise.
* tests/stat.c (SAMPLE_SIZE): Likewise.
* tests/struct_flock.c (invoke_test_syscall, test_flock_einval): Likewise.
* tests/symlinkat.c (main): Likewise.
* tests/sync_file_range.c (main): Likewise.
* tests/syslog.c (main): Likewise.
* tests/tee.c (main): Likewise.
* tests/timer_create.c (main): Likewise.
* tests/truncate64.c (main): Likewise.
* tests/umode_t.c (test_syscall): Likewise.
* tests/unlinkat.c (main): Likewise.
* tests/waitid.c (main): Likewise.
* tests/waitpid.c (main): Likewise.
* tests/xetpgid.c (main): Likewise.
* tests/xetpriority.c (main): Likewise.
* tests/xgetrlimit.c (main): Likewise.
* tests/xstatfsx.c (main) [CHECK_ODD_SIZE]: Likewise.
* tests/xstatx.c (main): Likewise.
preadv-pwritev.c: In function 'main':
preadv-pwritev.c:162: warning: comparison between signed and unsigned
readv.c: In function 'main':
readv.c:148: warning: comparison between signed and unsigned
recvmsg.c: In function 'main':
recvmsg.c:148: warning: comparison between signed and unsigned
* tests/preadv-pwritev.c (main): Cast r_len to int.
* tests/readv.c (main): Likewise.
* tests/recvmsg.c (main): Likewise.
This change moves remaining arch specific getregs_old code into
appropriate arch subdirectories and removes unnecessary code
duplication.
* linux/getregs_old.h: New file.
* linux/powerpc/getregs_old.h: Likewise.
* linux/powerpc64/getregs_old.h: Likewise.
* linux/x86_64/getregs_old.h: Likewise.
* Makefile.am (EXTRA_DIST): Add them.
* syscall.c: Include "getregs_old.h".
[X86_64 || POWERPC]: Remove.
[ARCH_REGS_FOR_GETREGSET] (ptrace_getregset_or_getregs): Define
to ptrace_getregset.
[ARCH_REGS_FOR_GETREGS] (ptrace_getregset_or_getregs): Define
to ptrace_getregs.
(get_regs): Check for ptrace_getregset_or_getregs instead
of ARCH_REGS_FOR_GETREGSET and ARCH_REGS_FOR_GETREGS. Use
ptrace_getregset_or_getregs instead of ptrace_getregset and
ptrace_getregs. Check for HAVE_GETREGS_OLD instead of X86_64
and POWERPC. Use use_getregs_old instead of getregset_support
and old_kernel.
In order to avoid name clash on distributions which decide to include
kernel headers instead of UAPI ones. For example, on SLES 11SP4:
gcc -DHAVE_CONFIG_H -I./linux/x86_64 -I./linux -I. -Wall -O2 -c net.c
In file included from /usr/include/linux/sysctl.h:25:0,
from /usr/include/linux/netfilter.h:6,
from /usr/include/linux/netfilter_arp.h:8,
from /usr/include/linux/netfilter_arp/arp_tables.h:14,
from net.c:60:
net.c: In function 'print_packet_mreq':
gcc_compat.h:59:27: error: negative width in bit-field '<anonymous>'
# define MUST_BE_ARRAY(a) BUILD_BUG_ON_ZERO(!SAME_TYPE((a), &(a)[0]))
^
defs.h:76:53: note: in expansion of macro 'MUST_BE_ARRAY'
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]) + MUST_BE_ARRAY(a))
^
net.c:747:22: note: in expansion of macro 'ARRAY_SIZE'
if (mreq.mr_alen > ARRAY_SIZE(mreq.mr_address))
^
due to the fact BUILD_BUG_ON_ZERO is already defined in <linux/kernel.h>.
* gcc_compat.h (BUILD_BUG_ON_ZERO): Rename to FAIL_BUILD_ON_ZERO.
(MUST_BE_ARRAY): Update usage.
Why gcc didn't complain about it? It is definitely an index clash.
* linux/x32/syscallent.h: Change initializer indices for empty records from
[327 ... 511] to [329 ... 511].
This will be needed to implement fault injection on those architectures
that lack PTRACE_SETREGSET/PTRACE_SETREGS support.
* defs.h (upoke): New prototype.
* upoke.c: New file.
* Makefile.am (libstrace_a_SOURCES): Add it.
This enables printing size-limited (expectedly) ASCIZ strings.
This is done by increasing umoven size limit for sized strings by one
byte above max_strlen (enabling copying possible NUL byte in case len is
greater than max_strlen) and decreasing size after copying by one byte
in case QUOTE_0_TERMINATED is set (due to user_style or usage of len of
-1). As a result, there is one excess byte for string_quote in case
QUOTE_0_TERMINATED is set so string_quote can check for NUL termination
of strings up to size bytes in size (which is len or max_strlen, whatever
is greater).
The catch here is that when string is not properly NUL-terminated and
QUOTE_0_TERMINATED is provided in user_style and len is less than
max_strlen then last non-NUL byte is not printed. But ellipsis is
printed instead, being indication that string is not terminated
properly. QUOTE_OMIT_TRAILING_0 should be used instead in case this
behaviour is not intended.
* util.c (printstr_ex): Copy one excess byte in case of non-negative len
provided and it is more than max_strlen; handle case of max_strlen of 0
in case QUOTE_0_TERMINATED is set separately; check for need of printing
ellipsis by checking resulting style against QUOTE_0_TERMINATED.
* linux/perf_event_struct.h: New file, definition of struct perf_event_attr
from Linux 4.8
* Makefile.am (strace_SOURCES): Add it.
* xlat/hw_breakpoint_len.in: New file.
* xlat/hw_breakpoint_type.in: Likewise.
* xlat/perf_attr_size.in: Likewise.
* xlat/perf_branch_sample_type.in: Likewise.
* xlat/perf_event_read_format.in: Likewise.
* xlat/perf_event_sample_format.in: Likewise.
* xlat/perf_hw_cache_id.in: Likewise.
* xlat/perf_hw_cache_op_id.in: Likewise.
* xlat/perf_hw_cache_op_result_id.in: Likewise.
* xlat/perf_hw_id.in: Likewise.
* xlat/perf_sw_ids.in: Likewise.
* xlat/perf_type_id.in: Likewise.
* perf.c [HAVE_LINUX_PERF_EVENT_H]: Remove inclusion of
<linux/perf_event.h>.
(PRINT_XLAT): New macro for simplifying printing values from
sorted xlat.
(printxlat_search): New function, wrapper for xlat_search with behaviour
similar to printval.
(print_perf_event_attr): New print_event_attr structure fetching and
printing function.
(SYS_FUNC(perf_event_open)): Use print_perf_event_attr for displaying
attr argument contents.
* tests/perf_event_open.c: Renamed to
tests/perf_event_open_nonverbose.c.
* tests/perf_event_open.test: add -e verbose=none in order to preserve
output format being checked (in case verbose output is enabled,
contents of attr arguments are shown now); rename to
tests/perf_event_open_nonverbose.test; add -e trace=perf_event_open.
* util.c (printxval_searchn): New function.
* defs.h (printxval_searchn): New prototype.
(printxval_search): New helper macro useful in conjunction with static
xlat arrays.
