| Commit message (Collapse) | Author | Age | Files | Lines |
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rtld: fix warnings about redundant declarations
Fix warnings about redundant declarations in rtld
when libthr in increased to WARNS=6.
Sponsored by: Dell EMC
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Correct explanation of the dynamic tokens handling.
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Document direct execution mode for rtld.
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Update my copyright, note The FreeBSD Foundation involvement.
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MFC r318313:
Make ld-elf.so.1 directly executable.
MFC r318352 (by jonathan):
Rename rtld's parse_libdir to parse_integer.
MFC r318380:
Pretend that there is some security when executing in direct mode.
MFC r318431 (by jonathan):
Allow rtld direct-exec to take a file descriptor.
MFC r318445:
Fix style, add static keyword before static function definition.
MFC r318739:
For ld.so direct execution mode, implement -p option.
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Fix the AT_EXECFD functionality.
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Convert absolute links to relative links.
Style.Makefile(9) has been ignored to produce minimal diffs.
MFC r314837
The relative symlink fix causes downstream issues for
EMC DELL Isilon so revert the relative symlink fix
pending a better solution.
Reported by: ngie
MFC r315091
Revert r314833 until the problem with INSTALL_RSYMLINKS can be found
as it appears to break arm release builds.
PR: 217705
Reported by: cyclaero@gmail.com
Approved by: grehan (mentor)
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Style.
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Pull the R_AARCH64_TLSDESC code out into a common function and use them in
both the plt and non-plt case.
This fixes an issue where libraries built with LLD can fail with
"Unhandled relocation 1031"
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Increase WARNS for rtld-elf tests
ATF tests have a default WARNS of 0, unlike other usermode programs.
Reviewed by: ngie, julian
MFC after: 3 weeks
Sponsored by: Spectra Logic Corporation
Differential Revision: https://reviews.freebsd.org/D9933
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Implement LD_BIND_NOT knob for rtld.
MFC r315337:
Disable LD_BIND_NOT for setugid processes.
MFC r315429 (by jilles):
Document that LD_BIND_NOT is unset for setugid processes.
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Fix _mips_rtld_bind() to handle ELF filters.
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Avoid bind lock recursion.
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Handle protected symbols in rtld.
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Fix races and logic errors around dlclose().
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On rela architectures GNU BFD ld and gold store the relocation addend
in GOT entries (in addition to the relocation's r_addend field).
rtld previously relied on this to access its own _DYNAMIC symbol in
order to apply its own relocations.
However, recording addends in the GOT is not specified by the ABI,
and some versions of LLVM's LLD linker leave the GOT uninitialized on
rela architectures.
BFD ld does not populate the GOT on sparc64, and sparc64 rtld has a
machine-dependent rtld_dynamic_addr() function that returns the
_DYNAMIC address. Use the same approach on amd64, obtaining the %rip-
relative _DYNAMIC address following a suggestion from Rafael EspĂndola.
Architectures other than amd64 should be addressed in future work.
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Fix acquisition of nested write compat rtld locks.
PR: 215826
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For the main binary, postpone enforcing relro read-only protection
until copy relocations are done.
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Use ANSI C definitions, update comment.
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Take write lock for rtld_bind before modifying obj_list in dl_iterate_phdr().
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DIRDEPS_BUILD: Add some missing dirctories to the build.
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rtld-elf has some vestigial support for building as a static executable.
r45501 introduced a partial implementation with a prescient note that it
"might never be enabled." r153515 introduced ELF symbol versioning
support, and removed part of the unused build infrastructure for static
rtld.
GNU ld populates rela relocation addends and GOT entries with the same
values, and rtld's run-time dynamic executable check relied on this.
Alternate toolchains may not populate the GOT entries, which caused
RTLD_IS_DYNAMIC to return false. Simplify rtld by just removing the
unused check.
If we want to restore static rtld support later on we ought to introduce
a build-time #ifdef flag.
PR: 214972
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Fix typo.
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When symbol versioning was added to rtld, the boolean 'in_plt' argument
to find_symdef() was converted to a bitmask of flags. The first flag
added was 'SYMLOOK_IN_PLT' which replaced the 'in_plt' bool. This
happened to still work by accident as SYMLOOK_IN_PLT had the value of 1
which is the same as 'true', so there should be no functional change.
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Pass CPUID[1] %edx (cpu_feature), %ecx (cpu_feature2) and
CPUID[7].%ebx (cpu_stdext_feature), %ecx (cpu_stdext_feature2) to the
ifunc resolvers on x86.
MFC r308925:
Adjust r308689 to make rtld compilable with either in-tree or
(hopefully) stock gcc 4.2.1 on i386 and other arches.
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Assert that there is no unresolved symbols during rtld linking.
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Update hint to utilize user variable.
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Move defines common between rtld and libsysdecode into the header.
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Fill phdr and phsize for rtld object.
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Remove all remaining uses of TAILQ_FOREACH_FROM() from rtld-elf.
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Fix dlsym(RTLD_NEXT) handling to only return the next library in last library
cases.
Approved by: re (gjb)
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The dependency is needed in PROG_FULL since only the build of PROG_FULL
is using the LDFLAGS and depending on VERSION_MAP. This was not a problem
with MK_DEBUG_FILES==no since it only builds PROG.
This should probably be using bsd.lib.mk instead [1]
Reported by: swills, gjb
Reviewed by: emaste
Noted by: rgrimes [1]
Sponsored by: EMC / Isilon Storage Division
Approved by: re (kib)
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Check that the dirlist path string specification does not cause
overflow and is fully contained in the hints file.
Check that the dirlist string is nul-terminated.
Make 'hdr' static variable, so that hdr.dirlistlen is available when
hints cached value is used on next function calls. Reset hdr.dirlistlen
to zero if error was detected, so that allocations use reasonable size.
Use 'hints', and not 'p' in the body, since p is only initialized on the
first call.
Reported and reviewed by: truckman (previous version)
Sponsored by: The FreeBSD Foundation
CIDs: 1006503, 1006504, 1006676, 1008488, 1007263
MFC after: 2 weeks
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after r298107
Summary of changes:
- Replace all instances of FILES/TESTS with ${PACKAGE}FILES. This ensures that
namespacing is kept with FILES appropriately, and that this shouldn't need
to be repeated if the namespace changes -- only the definition of PACKAGE
needs to be changed
- Allow PACKAGE to be overridden by callers instead of forcing it to always be
`tests`. In the event we get to the point where things can be split up
enough in the base system, it would make more sense to group the tests
with the blocks they're a part of, e.g. byacc with byacc-tests, etc
- Remove PACKAGE definitions where possible, i.e. where FILES wasn't used
previously.
- Remove unnecessary TESTSPACKAGE definitions; this has been elided into
bsd.tests.mk
- Remove unnecessary BINDIRs used previously with ${PACKAGE}FILES;
${PACKAGE}FILESDIR is now automatically defined in bsd.test.mk.
- Fix installation of files under data/ subdirectories in lib/libc/tests/hash
and lib/libc/tests/net/getaddrinfo
- Remove unnecessary .include <bsd.own.mk>s (some opportunistic cleanup)
Document the proposed changes in share/examples/tests/tests/... via examples
so it's clear that ${PACKAGES}FILES is the suggested way forward in terms of
replacing FILES. share/mk/bsd.README didn't seem like the appropriate method
of communicating that info.
MFC after: never probably
X-MFC with: r298107
PR: 209114
Relnotes: yes
Tested with: buildworld, installworld, checkworld; buildworld, packageworld
Sponsored by: EMC / Isilon Storage Division
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No functional change.
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Sponsored by: The FreeBSD Foundation
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MK_TOOLCHAIN==no disables building and installing of pic archives.
c_pic.a is still needed for rtld though so force it to build in lib/libc
and link directly to the objdir version of it for rtld.
Somehow this has been broken since r148725.
Sponsored by: EMC / Isilon Storage Division
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Sponsored by: The FreeBSD Foundation
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Sponsored by: EMC / Isilon Storage Division
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segment. According to gABI spec, presence of the tag indicates that
dynamic linker must be prepared to handle relocations against any
read-only segment, not only the segment which we, somewhat arbitrary,
declared the text.
For each read-only segment, add write permission before relocs are
processed, and return to the mapping mode requested by the phdr, after
relocs are done.
Reported, tested, and reviewed by: emaste
PR: 207631
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
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Sponsored by: The FreeBSD Foundation
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Sponsored by: The FreeBSD Foundation
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After calling the cap_init(3) function Casper will fork from it's original
process, using pdfork(2). Forking from a process has a lot of advantages:
1. We have the same cwd as the original process.
2. The same uid, gid and groups.
3. The same MAC labels.
4. The same descriptor table.
5. The same routing table.
6. The same umask.
7. The same cpuset(1).
From now services are also in form of libraries.
We also removed libcapsicum at all and converts existing program using Casper
to new architecture.
Discussed with: pjd, jonathan, ed, drysdale@google.com, emaste
Partially reviewed by: drysdale@google.com, bdrewery
Approved by: pjd (mentor)
Differential Revision: https://reviews.freebsd.org/D4277
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Sponsored by: The FreeBSD Foundation
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Sponsored by: EMC / Isilon Storage Division
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the constraints on what needs to be installed in a specific to
maintain consistency during upgrades.
Create a new clibs package containing libraries that are needed
as a bare minimum for consistency.
With much help and input from: kib
Sponsored by: The FreeBSD Foundation
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package.
Sponsored by: The FreeBSD Foundation
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Sponsored by: The FreeBSD Foundation
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