| Commit message (Collapse) | Author | Age | Files | Lines |
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Handle protected symbols in rtld.
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r289172:
Refactor the test/ Makefiles after recent changes to bsd.test.mk (r289158) and
netbsd-tests.test.mk (r289151)
- Eliminate explicit OBJTOP/SRCTOP setting
- Convert all ad hoc NetBSD test integration over to netbsd-tests.test.mk
- Remove unnecessary TESTSDIR setting
- Use SRCTOP where possible for clarity
r290254:
Remove unused variable (SRCDIR)
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Conditionalize all code that uses tcpd.h behind `LIBWRAP` guard
This will allow the code to stand by itself without libwrap
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Fix acquisition of nested write compat rtld locks.
PR: 215826
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Take write lock for rtld_bind before modifying obj_list in dl_iterate_phdr().
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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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portion is used.
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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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MFC r306029:
Use SRCTOP instead of the longhand version for defining the path to contrib/atf
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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.
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Fix issues found by Coverity in the rtld-elf.c:gethints().
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Declare line[] in the outermost scope of retrieve() instead of
declaring it in an inner scope and then using it via a pointer
in the outer scope.
Reported by: Coverity
CID: 605895
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Fix handling of DT_TEXTREL for an object with more than one read-only
segment.
PR: 207631
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Fix the type for hw.ncpu, so sysctlbyname doesn't consistently fail on
64-bit architectures where sizeof(int) != sizeof(size_t).
PR: 206758
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Include rtld itself when iterating over loaded ELF objects in
dl_iterate_phdr(3).
MFC r294373:
Do not call callbacks for dl_iterate_phdr(3) with the rtld bind and
phdr locks locked.
MFC r294470 (by kan):
Fix initlist_add_object invocation parameters.
MFC r294936 (by kan):
Do not unlock rtld_phdr_lock over callback invocations.
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Use LIBEXECDIR for /usr/libexec.
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Allow PT_NOTES segments to be located anywhere in the executable
image.
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Clang emits SSE instructions on amd64 in the common path of
pthread_mutex_unlock. If the thread does not otherwise use SSE,
this usage incurs a context-switch of the FPU/SSE state, which
reduces the performance of multiple real-world applications by a
non-trivial amount (3-5% in one application).
Instead of this change, I experimented with eagerly switching the
FPU state at context-switch time. This did not help. Most of the
cost seems to be in the read/write of memory--as kib@ stated--and
not in the #NM handling. I tested on machines with and without
XSAVEOPT.
One counter-argument to this change is that most applications already
use SIMD, and the number of applications and amount of SIMD usage
are only increasing. This is absolutely true. I agree that--in
general and in principle--this change is in the wrong direction.
However, there are applications that do not use enough SSE to offset
the extra context-switch cost. SSE does not provide a clear benefit
in the current libthr code with the current compiler, but it does
provide a clear loss in some cases. Therefore, disabling SSE in
libthr is a non-loss for most, and a gain for some.
I refrained from disabling SSE in libc--as was suggested--because
I can't make the above argument for libc. It provides a wide variety
of code; each case should be analyzed separately.
https://lists.freebsd.org/pipermail/freebsd-current/2015-March/055193.html
Suggestions from: dim, jmg, rpaulo
Sponsored by: Dell Inc.
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Ensure we use calculate_first_tls_offset, even if the main program doesn't
have TLS program header. This is needed on architectures with Variant I
tls, that is arm, arm64, mips, and powerpc. These place the thread control
block at the start of the buffer and, without this, this data may be
trashed.
This appears to not be an issue on mips or powerpc as they include a second
adjustment to move the thread local data, however this is on arm64 (with a
future change to fix placing this data), and should be on arm. I am unable
to trigger this on arm, even after changing the code to move the data
around to make it more likely to be hit. This is most likely because my
tests didn't use the variable in offset 0.
Reviewed by: kib
MFC after: 1 week
Sponsored by: ABT Systems Ltd
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The requirement is for a GCC-compatible compiler and not necessarily
GCC itself. However, we currently expect any compiler used for building
the whole of FreeBSD to be GCC-compatible and many things will break if
not; there's no longer a need to have an explicit test for this in rtld.
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Call /etc/crontab the "system crontab", not "root's crontab". While
here, fix some other wording issues
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Remove the #ifdef DEBUG code, which is not compilable on 64bit
architectures.
PR: 199767
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Always do token substitution, do not require -z origin to do it.
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This is only an interim fix; MIPS should be using the MI code instead,
which does not have this issue.
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Sponsored by: The FreeBSD Foundation
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Implement support for -z global linker option.
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Change default visibility for rtld to hidden, on x86.
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Pass MAP_ALIGNED_SUPER to allocate the whole dso region if its text is large
enough for the superpage mapping.
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Use realpath(3) to properly expand $ORIGIN to its absolute path.
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Add the following options to enable/disable several features in the base system
WITHOUT_BOOTPARAMD - bootparamd
WITHOUT_BOOTPD - bootpd
WITHOUT_FINGER - finger, fingerd
WITHOUT_FTP - ftp, ftpd
WITHOUT_INETD - inetd
WITHOUT_RBOOTD - rbootd
WITHOUT_TCP_WRAPPERS - tcpd, et al
WITHOUT_TFTP - tftp, tftp-server
WITHOUT_TIMED - timed
Sponsored by: EMC / Isilon Storage Division
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The runtime linker needs to include a path to itself in the link map
it exports to the debugger. It currently has two choices: it can use
a compiled-in path (/libexec/ld-elf.so.1) or it can use the path stored
in the interpreter path in the binary being executed. The runtime linker
currently prefers the second. However, this is usually wrong for compat32
binaries since the binary specifies the path of rtld on a 32-bit system
(/libexec/ld-elf.so.1) instead of the actual path (/libexec/ld-elf32.so.1).
For now, always assume the compiled in path (/libexec/ld-elf32.so.1) as
the rtld path and ignore the path in the binary for the 32-bit runtime
linker.
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r277676:
Add MK_TALK knob for building the talk and talkd
Sponsored by: EMC / Isilon Storage Division
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Use powerof2(). Remove single-use variable.
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Add rtld private interface for dso to detect dynamic loading
vs. static linking.
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r264400:
NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.
r265836:
Remove last two NO_MAN= in the tree. In both of these cases, MAN= is
what is needed.
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r273929 (by jmmv):
MFV: Import atf-0.21.
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Add baud rate support to telnet(1)
This implements part of RFC-2217
It's based off a patch originally written by Sujal Patel at Isilon, and
contributions from other Isilon employees.
PR: 173728
Phabric: D995
Reviewed by: markj, markm
Sponsored by: EMC / Isilon Storage Division
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Linux LD_ITERATE_PHDR(3):
The dlpi_name field is a null-terminated string giving the
pathname from which the shared object was loaded.
That functionality is much more useful than returning just the short
name.
Update dl_iterate_phdr(3) to follow r272842
MFC of r272842 and r272848
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Import HyperV Key-Value Pair (KVP) driver and daemon code by Microsoft,
many thanks for their continued support of FreeBSD.
While I'm there, also implement a new build knob, WITHOUT_HYPERV to
disable building and installing of the HyperV utilities when necessary.
The HyperV utilities are only built for i386 and amd64 targets.
Approved by: re (gjb)
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