_dyld_get_all_image_infos() was only used in test code in Crashpad.
This addresses two related problems.
When running on 10.13 or later, _dyld_get_all_image_infos() is not
available. It appears to still be implemented in dyld, but its symbol is
now private. This was always known to be an “internal” interface. When
it’s not available, fall back to obtaining the address of the process’
dyld_all_image_infos structure by calling task_info(…, TASK_DYLD_INFO,
…). Note that this is the same thing that the code being tested does,
although the tests are not rendered entirely pointless because the code
being tested consumes dyld_all_image_infos through its own
implementation of an out-of-process reader interface, while the
dyld_all_image_infos data obtained by _dyld_get_all_image_infos() is
handled strictly in-process by ordinary memory reads. This is covered by
bug 187.
When building with the 10.13 SDK, no _dyld_get_all_image_infos symbol is
available to link against. In this case, access the symbol strictly at
runtime via dlopen() if it may be available, or when expecting to only
run on 10.13 and later, don’t even bother looking for this symbol. This
is covered by part of bug 188.
Bug: crashpad:185, crashpad:187, crashpad:188
Change-Id: Ib283e070faf5d1ec35deee420213b53ec24fb1d3
Reviewed-on: https://chromium-review.googlesource.com/534633
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Lazy initialization is particularly beneficial for Is64Bit(), which uses
a different (ptrace()-based) approach than the rest of the class (which
is /proc-based). It is possible for the /proc-based Initialize() to
succeed while ptrace() would fail, as it typically would in the
ProcessInfo.Pid1 test. Because this test does not call Is64Bit(),
permission to ptrace() shouldn’t be necessary, and in fact ptrace()
shouldn’t even be called.
This enables the ProcessInfo.Pid1 test on Android (due to ptrace(), it
was actually failing on any Linux, not just Android). It also enables
the ProcessInfo.Forked test on non-Linux, as the prctl(PR_SET_DUMPABLE)
Linux-ism can be removed from it.
Bug: crashpad:30
Test: crashpad_util_test ProcessInfo.*
Change-Id: Ic883733a6aed7e7de9a0f070a5a3544126c7e976
Reviewed-on: https://chromium-review.googlesource.com/455656
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
This makes Doxygen’s output more actionable by setting QUIET = YES to
suppress verbose progress spew, and WARN_IF_UNDOCUMENTED = NO to prevent
warnings for undocumented classes and members from being generated. The
latter is too noisy, producing 721 warnings in the current codebase.
The remaining warnings produced by Doxygen were useful and actionable.
They fell into two categories: abuses of Doxygen’s markup syntax, and
missing (or misspelled) parameter documentation. In a small number of
cases, pass-through parameters had intentionally been left undocumented.
In these cases, they are now given blank \param descriptions. This is
not optimal, but there doesn’t appear to be any other way to tell
Doxygen to allow a single parameter to be undocumented.
Some tricky Doxygen errors were resolved by asking it to not enter
directiores that we do not provide documentation in (such as the
“on-platform” compat directories, compat/mac and compat/win, as well as
compat/non_cxx11_lib) while allowing it to enter the
“off-platform” directories that we do document (compat/non_mac and
compat/non_win).
A Doxygen run (doc/support/generate_doxygen.sh) now produces no output
at all. It would produce warnings if any were triggered.
Not directly related, but still relevant to documentation,
doc/support/generate.sh is updated to remove temporary removals of
now-extinct files and directories. doc/appengine/README is updated so
that a consistent path to “goapp” is used throughout the file.
Change-Id: I300730c04de4d3340551ea3086ca70cc5ff862d1
Reviewed-on: https://chromium-review.googlesource.com/408812
Reviewed-by: Robert Sesek <rsesek@chromium.org>
This was done in Chromium’s local copy of Crashpad in 562827afb599. This
change is similar to that one, except more care was taken to avoid
including headers from a .cc or _test.cc when already included by the
associated .h. Rather than using <stddef.h> for size_t, Crashpad has
always used <sys/types.h>, so that’s used here as well.
This updates mini_chromium to 8a2363f486e3a0dc562a68884832d06d28d38dcc,
which removes base/basictypes.h.
e128dcf10122 Remove base/move.h; use std::move() instead of Pass()
8a2363f486e3 Move basictypes.h to macros.h
R=avi@chromium.org
Review URL: https://codereview.chromium.org/1566713002 .
nullptr ProcessReader::Module.
Prior to 64b87325b9de, the alignment problem meant that the Module for
dyld was looking at the wrong address instead of dyld’s correct load
address when a 32-bit process attempted to examine a crashing 64-bit
process. This resulted in a crash during the
MachOImageAnnotationsReader.CrashDyld test.
ProcessReader::Module pointers are permitted to be nullptr. This allows
minimal module data (its name) to be preserved even when no sense can be
made of the module based on its load address. The producer,
ProcessReader::InitializeModules(), and the non-test consumer,
ModuleSnapshotMac::Initialize(), both accept this correctly. The
producer’s documentation is updated to call this out. The ProcessReader
test is also updated to tolerate this case without crashing by adding
assertions.
TEST=snapshot_test MachOImageAnnotationsReader.*, ProcessReader.*
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/989713002
Also, move ProcessArgumentsForPID() into ProcessInfo.
This change prepares for a TaskForPID() implementation that’s capable of
operating correctly in a setuid root executable. TaskForPID() belongs in
util/mach, but for its permission checks, it must access some process
properties that were previously fetched by ProcessReader in snapshot.
util can’t depend on snapshot. The generic util-safe process information
bits (Is64Bit(), ProcessID(), ParentProcessID(), and StartTime()) are
moved from ProcessReader to ProcessInfo (in util), where the current
ProcessReader can use it (as it’s OK for snapshot to depend on util),
and the future TaskForPID() in util can also use it. ProcessInfo also
contains other methods that TaskForPID() will use, providing access to
the credentials that the target process holds. ProcessArgumentsForPID()
is related, and is also now a part of ProcessInfo.
TEST=snapshot_test, util_test
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/727973002
