43 Commits

Author SHA1 Message Date
brooks
f497acb46a elfdump: Add -E to test if a file is an ELF binary.
This is intended to replace potentially unreliable checks like:

	file -b $1 | grep -q '^ELF ..-bit .SB executable'

Reviewed by:	emaste
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D15971
2018-11-05 22:53:50 +00:00
oshogbo
b60d6a5607 capsicum: use a new capsicum helpers in tools
Use caph_{rights,ioctls,fcntls}_limit to simplify the code.
2018-11-04 19:24:49 +00:00
oshogbo
8acf9b1609 Convert cap_enter() < 0 && errno != ENOSYS to caph_enter() < 0.
No functional change intended.
2018-06-19 23:43:14 +00:00
emaste
0f78692999 elfdump: chase ABI tag note name change from r232832
r232832 changed the ABI tag note name from .note.ABI-tag to .note.tag.
Follow suit in elfdump.

Elfdump's note parsing is very basic and should be significantly
reworked, but for now just restore the broken functionality.

PR:		228290
Submitted by:	martin at lispworks.com
MFC after:	1 week
2018-05-30 01:16:50 +00:00
pfg
7551d83c35 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00
emaste
10774e73f3 elfdump: correct DT_AUXILIARY / DT_USED / DT_FILTER definitions
r109332 introduced these three as DT_SUNW_*. Update to the correct
names already used elsewhere in FreeBSD and the Sun "Linker and
Libraries Guide"

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2016-10-17 13:36:50 +00:00
oshogbo
05acb0798d Remove the duplicated code using Capsicum helpers.
Reviewed by:	cem, ed, bapt, emaste
Differential Revision	https://reviews.freebsd.org/D8140
2016-10-07 17:56:57 +00:00
emaste
7a9a0e3b3b elfdump: limit STDIN to no rights rather than closing it
Closing stdin/stdout/stderr is often a bad idea as a future open()
can end up with its fd. Leave it open and limit it to no rights
instead.

Reviewed by:	cem
Differential Revision:	https://reviews.freebsd.org/D7984
2016-09-20 21:38:12 +00:00
emaste
f408c9567d elfdump: adjust stdout/stderr capabilities
stdio uses fstat and the TIOCGETA ioctl. Also collapse the
cap_rights_limit and new cap_ioctls_limit calls into one if statement.
Errors here are not actionable by the user and distinguishing stdout
from stderr doesn't really have value.

Reported by:	kib
Reviewed by:	allanjude, bapt
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D7944
2016-09-18 20:23:26 +00:00
emaste
aa1ae99362 elfdump: handle STT_SPARC_REGISTER
STT_SPARC_REGISTER is a SPARC-specific symbol type specified by the
Sparcv9 ABI to provide some information on register use by the object.

Also rework st_info type lookup to avoid out-of-bounds array access.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2016-01-25 04:22:01 +00:00
emaste
47a49e1e6c Rename ELFOSABI_SYSV to ELFOSABI_NONE to match current spec
Source: http://www.sco.com/developers/gabi/latest/ch4.eheader.html

Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D3731
2015-09-24 21:04:48 +00:00
emaste
3ef25e9daf elfdump: report MIPS ELF section type SHT_MIPS_REGINFO
Sponsored by:	The FreeBSD Foundation
2015-09-23 00:32:38 +00:00
emaste
0f9952051e elfdump: report MIPS-specific section type SHT_MIPS_ABIFLAGS
Sponsored by:	The FreeBSD Foundation
2015-09-22 01:45:43 +00:00
emaste
faf3fc6a75 Add RISC-V ELF machine type definition
EM_RISCV is now officially registered as e_machine 243.

MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-07-24 16:52:21 +00:00
emaste
01699072e4 Add ELF machine EM_IAMCU, 32-bit Intel MCU
It is e_machine 6, which was previously reserved for 486.
2015-05-14 18:29:05 +00:00
brueffer
678318cd20 Limit descriptors and enter capability mode.
Differential:	D1009
Reviewed by:	jonathan, pjd
MFC after:	2 weeks
Relnotes:	yes
2014-11-24 09:31:38 +00:00
emaste
3c71db95ff elfdump: Remove extraneous _SUNW_ in reported DT_ names
Sponsored by:	The FreeBSD Foundation
2014-08-21 20:58:43 +00:00
emaste
8026acede4 Rename DT_FEATURE_1 to DT_FEATURE
This provides a minor cleanup in elfdump; there are otherwise no
consumers in the tree.  Old SUN documentation can be found for either
variant, but GNU binutils switched to DT_FEATURE around 2000.

Sponsored by:	The FreeBSD Foundation
2014-08-21 20:55:10 +00:00
emaste
492315a0ce elfdump: use existing ELF constants where available
Sponsored by:	The FreeBSD Foundation
2014-07-31 15:40:03 +00:00
emaste
1d0eb2e212 elfdump: add EM_AARCH64 64-bit ARM machine architecture 2014-07-31 15:25:12 +00:00
andreast
2a20430531 Further improvements on elfdump, to follow up r269092:
- Add ARM specific section header types.
- Add SHT_GNU_HASH section header type.
- Improve reporting of undefined tags in d_tags.
- Add DT_GNU_HASH tag.

Reviewed by:	emaste
2014-07-26 19:44:45 +00:00
emaste
a270183912 elfdump: Improve section type reporting
The SHT range 0x70000000-0x7fffffff is processor-specific.  Pass the
ELF machine type header to sh_types so the section header type name can
be reported correctly for the given processor.

For all ranges report the actual value for unknown types.

Add MIPS-specific type SHT_MIPS_OPTIONS.

CR:		D483
Reviewed by:	sbruno, marcel
Sponsored by:	DARPA, AFRL
2014-07-25 18:20:56 +00:00
marcel
beb0a51a20 Don't dump core when the ELF file has no section headers. The ELF
core files created by gcore are among those.
2014-06-19 20:12:28 +00:00
emaste
efb4e81e74 Handle ELF files with 65280 or more sections
If e_shnum or e_shstrndx are at least SHN_LORESERVE (0xff00) then an
escape value is used to indicate that the actual value is found in one
of section 0's fields.

Sponsored by:	DARPA, AFRL
2014-05-07 21:16:47 +00:00
jhibbits
e72ca70a74 Add missing EM_PPC64 to e_machine header display.
MFC after:	1 week
2014-01-14 04:28:41 +00:00
ed
af31e8843c More -Wmissing-variable-declarations fixes.
In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.
2012-10-19 14:49:42 +00:00
eadler
bbec9d256e Don't extract the n_type value from the elf header, since it is never used
Fix warning when compiling with gcc46:
	variable 'type' set but not used

Approved by:	cperciva
MFC after:	3 days
2012-02-16 05:16:55 +00:00
marcel
4718565769 o Use C99 designated initializer to properly handle ELFOSABI_STANDALONE.
o  In elf_get_byte(), cast through uint8_t and not char to avoid sign
   extension.
2011-10-16 14:11:05 +00:00
rpaulo
9d6d6d8655 Teach elfdump(1) about the SUNW_dof section.
Sponsored by:	The FreeBSD Foundation
2010-08-11 18:02:48 +00:00
marcel
597a7332d8 s/DT_IA64_PLT_RESERVE/DT_IA_64_PLT_RESERVE/ 2006-01-28 17:58:22 +00:00
marcel
c9778a66ea Know the machines FreeBSD runs on. Print the machine value for
unknown machines.

MFC after: 1 week
2005-12-17 23:24:34 +00:00
jake
4561edec30 Elf_Phdr.p_type 7 is "PT_TLS". 2004-03-02 14:06:27 +00:00
schweikh
9d0084b76a Removed another spurious semicolon forgotten in the previous commit. 2003-09-06 11:55:05 +00:00
schweikh
c653c4017e Removed two spurious semicolons after function definitions.
Removed three spurious tabs on lines by themselves.

PR:		bin/56492
Submitted by:	Stefan Farfeleder <stefan@fafoe.narf.at>
MFC after:	6 weeks
2003-09-06 10:55:30 +00:00
marcel
892df4d617 Fix sign-extension bug for 32 and 64-bit values. For 64-bit values
this involves the sign-extension of the high and low "word". Both
of which are 32-bit. The bug is especially harmful on ia64, where
0x9fffffffe0000000 is a common address (base of register stack).
This was invariably displayed as 0xffffffffe0000000.

The sign-extension is fixed by using {b|l}e{16|32|64}dec() where
applicable. Since elfdump(1) is not a bootstrap tool, dependency
on these functions is not a problem.
2003-08-09 01:55:37 +00:00
ru
bff3635b31 Synchronize usage() and SYNOPSIS, and fix them (flags are not
optional here).  Sort options.  Print the file name on error.
2003-06-28 22:30:46 +00:00
obrien
f0ebe6996a Make WARNS=5 clean even on 64-bit platforms. 2003-02-03 01:30:47 +00:00
obrien
e2301bf008 Make WARNS=5 on i386, (WARNS=1 on 64-bit platforms).
Submitted by:	dwmalone (tweaked by me)
2003-02-03 01:22:58 +00:00
obrien
9746fdfdd8 Try to tighten up the types a little bit to help debugging with GDB. 2003-02-02 22:16:05 +00:00
marcel
abee30eb68 If we're going to build and install this on ia64, we might as well
teach it about ia64 specific section types, dynamic tags and machine
type. This is a mostly insignificant change given the amount of
work that this tool obviously needs...
2003-01-18 02:33:49 +00:00
obrien
1917b354f1 Like sh_types, dt_tags just aren't in consecutive order, so we have to move
away from indexing into an array.  Also add Sun and GNU specific tags.
2003-01-15 21:24:05 +00:00
obrien
7b1874978c The defined sh_types's just aren't in consecutive order, so we have to move
away from indexing into an array.
2003-01-15 20:48:56 +00:00
obrien
5e4c11b5ba Add a BSDL'ed util that displays information about ELF files.
This is simular to readelf(1) and objdump(1).

Submitted by:	jake
2003-01-15 18:32:06 +00:00