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61a83c3467
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Jed Davis 61a83c3467 Bug 1440203 - Support memfd_create in IPC shared memory. r=glandium 
This commit also allows `memfd_create` in the seccomp-bpf policy for all
process types.

`memfd_create` is an API added in Linux 3.17 (and adopted by FreeBSD
for the upcoming version 13) for creating anonymous shared memory
not connected to any filesystem.  Supporting it means that sandboxed
child processes on Linux can create shared memory directly instead of
messaging a broker, which is unavoidably slower, and it should avoid
the problems we'd been seeing with overly small `/dev/shm` in container
environments (which were causing serious problems for using Firefox for
automated testing of frontend projects).

`memfd_create` also introduces the related operation of file seals:
irrevocably preventing types of modifications to a file.  Unfortunately,
the most useful one, `F_SEAL_WRITE`, can't be relied on; see the large
comment in `SharedMemory:ReadOnlyCopy` for details.  So we still use
the applicable seals as defense in depth, but read-only copies are
implemented on Linux by using procfs (and see the comments on the
`ReadOnlyCopy` function in `shared_memory_posix.cc` for the subtleties
there).

There's also a FreeBSD implementation, using `cap_rights_limit` for
read-only copies, if the build host is new enough to have the
`memfd_create` function.

The support code for Android, which doesn't support shm_open and can't
use the memfd backend because of issues with its SELinux policy (see bug
1670277), has been reorganized to reflect that we'll always use its own
API, ashmem, in that case.

Differential Revision: https://phabricator.services.mozilla.com/D90605
2020-10-21 23:34:46 +00:00
..
external Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
faster Bug 1641291 - Part 2: Make NSDISTMODE=copy impact install manifests. r=glandium 2020-07-07 02:16:12 +00:00
makefiles Bug 1672306 - Don't enable rust "global" LTO when cross LTO is enabled. r=firefox-build-system-reviewers,dmajor 2020-10-21 01:20:48 +00:00
mozunit Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
tests Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
AB_rCD.mk
autoconf-js.mk.in
autoconf.mk.in
baseconfig.mk Bug 1651287 - Add a pre-compile pseudo-tier. r=firefox-build-system-reviewers,rstewart 2020-07-11 22:18:25 +00:00
check_js_msg_encoding.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
check_js_opcode.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
check_macroassembler_style.py Bug 1672023 - Remove excluded files from black.yml r=sylvestre,perftest-reviewers,geckoview-reviewers,agi 2020-10-21 21:29:30 +00:00
check_source_count.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
check_spidermonkey_style.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
check_vanilla_allocations.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
config.mk Bug 1670357 - Remove make targets for cleaning: clean, realclean, clobber, distclean, clobber_all, everything r=firefox-build-system-reviewers,mhentges 2020-10-15 20:37:18 +00:00
create_rc.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
create_res.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
createprecomplete.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
emptyvars-js.mk.in
emptyvars.mk.in
gcc_hidden.h
gcc-stl-wrapper.template.h Bug 1594027 - add more STL wrappers to fix build with libc++ 9 r=froydnj 2020-02-24 20:18:01 +00:00
install.bat
make-stl-wrappers.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
make-system-wrappers.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
make-windows-h-wrapper.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
Makefile.in Bug 1670357 - Remove make targets for cleaning: clean, realclean, clobber, distclean, clobber_all, everything r=firefox-build-system-reviewers,mhentges 2020-10-15 20:37:18 +00:00
milestone.txt Update configs. IGNORE BROKEN CHANGESETS CLOSED TREE NO BUG a=release ba=release 2020-10-19 16:39:05 +00:00
moz.build Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
MozZipFile.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
msvc-stl-wrapper.template.h Bug 1618760 - Remove MSVC-specific include hacks in header wrappers. r=dmajor 2020-02-28 21:41:18 +00:00
nsinstall.c
nsinstall.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
pathsub.c
pathsub.h
printconfigsetting.py Bug 1623132 - Rewrite printconfigsetting to use configparser, python 3 r=rstewart 2020-03-18 15:07:24 +00:00
printprereleasesuffix.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
rebuild_check.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
recurse.mk Bug 1669442 - Fix dependency between libxul and mozgtk after bug 1573566. r=andi,dmajor 2020-10-07 12:17:56 +00:00
rules.mk Bug 1670357 - Remove make targets for cleaning: clean, realclean, clobber, distclean, clobber_all, everything r=firefox-build-system-reviewers,mhentges 2020-10-15 20:37:18 +00:00
run_spidermonkey_checks.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
run-and-prefix.py Bug 1654103: Standardize on Black for Python code in mozilla-central. r=remote-protocol-reviewers,marionette-reviewers,webdriver-reviewers,perftest-reviewers,devtools-backward-compat-reviewers,jgilbert,preferences-reviewers,sylvestre,maja_zf,webcompat-reviewers,denschub,ntim,whimboo,sparky 2020-10-21 21:27:27 +00:00
static-checking-config.mk
stl-headers.mozbuild
system-headers.mozbuild Bug 1440203 - Support memfd_create in IPC shared memory. r=glandium 2020-10-21 23:34:46 +00:00
windows-h-constant.decls.h Bug 1630361 - Remove [NeedsWindowsUndef] attribute from webidl, r=peterv 2020-04-16 23:40:57 +00:00
windows-h-unicode.decls.h Bug 1630361 - Remove [NeedsWindowsUndef] attribute from webidl, r=peterv 2020-04-16 23:40:57 +00:00
windows-h-wrapper.template.h Bug 1618760 - Remove MSVC-specific include hacks in header wrappers. r=dmajor 2020-02-28 21:41:18 +00:00