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43a82703
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2021-11-27T20:26:05
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nlist: Remove condition which is always true
The nlist() function is limited to handle ELF binaries of the same class
as size as the size_t of the architecture built.
In addition the SIZE_T_MAX macro is BSD specific, and was falling back
to the wrong constant on most 64-bit non-BSD systems.
Warned-by: gcc
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8f59221c
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2021-02-19T06:51:18
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nlist: Remove repeated shadowing variable declaration
Warned-by: gcc
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eb445425
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2019-08-12T23:52:10
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Do not define SIZE_T_MAX if already defined
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9d917aad
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2019-08-07T22:58:30
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nlist: Fix out-of-bounds read on strtab
When doing a string comparison for a symbol name from the string table,
we should make sure we do a bounded comparison, otherwise a non-NUL
terminated string might make the code read out-of-bounds.
Warned-by: coverity
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18662cad
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2019-06-15T14:33:32
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nlist: Fix unbounded malloc() calls
There are a couple of malloc() calls with unbounded size arguments,
coming from the parsed file. We need to make sure the size is not
larger than the file being parsed, otherwise we might end up with
out of memory conditions.
Reported-by: Daniel Hodson <daniel@elttam.com.au>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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ce53f7c2
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2019-06-15T14:33:32
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nlist: Fix pread() return value check
We should check for partial reads, and not continue in those cases,
as we are not retrying them, otherwise we might end up operating on
uninitialized data.
Reported-by: Daniel Hodson <daniel@elttam.com.au>
Based-on-patch-by: Daniel Hodson <daniel@elttam.com.au>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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24d1f4dd
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2019-06-15T14:33:32
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nlist: Check whether sh_link is within bounds
The sh_link members should be >= e_shnum, otherwise we might do out of
bounds read accesses on the shdr array.
Reported-by: Daniel Hodson <daniel@elttam.com.au>
Based-on-patch-by: Daniel Hodson <daniel@elttam.com.au>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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e9529d9b
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2019-06-15T14:33:32
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nlist: Check that e_shnum and e_shentsize are within bounds
The e_shnum must not be 0, otherwise we will do a zero sized allocation
and further processing of the executable will lead to out of bounds
read/write accesses. The e_shentsize must be equal to sizeof(Elf_Shdr),
otherwise we will perform out of bounds read accesses on the shdr array.
Reported-by: Daniel Hodson <daniel@elttam.com.au>
Based-on-patch-by: Daniel Hodson <daniel@elttam.com.au>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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3aaedb12
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2019-06-15T14:33:32
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nlist: Check whether the nl argument is not NULL
This prevents programming errors.
Reported-by: Daniel Hodson <daniel@elttam.com.au>
Based-on-patch-by: Daniel Hodson <daniel@elttam.com.au>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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47013bc9
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2017-06-14T01:49:25
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Fix broken mmap() usage in nlist() by switching to pread()
The offset is not page aligned, which makes mmap() return EINVAL on
Linux. Switch to use pread() which handles unaligned offset and non-page
sized reads, and because we are already loading parts of the executable
by read() calls, so there's not much point in using mmap() anyway.
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e8d340de
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2017-06-05T05:30:27
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Remove a.out support from nlist()
Some libc libraries do not have an <a.out.h> header. And a.out as an
executable format is very much obsolete on pretty much all currently
supported systems, even if they might still support loading such
objects.
Remove the a.out support to increase portability.
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07c76b66
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2017-06-05T06:17:27
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Do not use legacy BSD u_* types
Some systems do not have these types available, and they are simply
convenience aliases. Instead use the expanded versions which are more
portable.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=101192
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cbfe0ebc
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2016-03-27T12:37:09
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Add missing <fcntl.h> includes
These are required due to the O_* macro usage, but have passed
undetected on glibc-based systems due to implicit inclusions.
Signed-off-by: Guillem Jover <guillem@hadrons.org>
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a6a101ef
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2014-11-04T05:33:26
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Use ANSI C prototypes
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7c4caa67
|
2013-05-25T15:36:11
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Fix comparison between signed and unsigned integer compiler warnings
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2fb7200d
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2011-10-23T19:27:44
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Fix typos in source comments
Found by codespell.
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45783ae4
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2009-05-29T02:45:54
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Define N_SYMSIZE in case the system does not do it
Fixes build failures on some non-Linux ports.
Based-on-patch-by: Petr Salinger <Petr.Salinger@seznam.cz>
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e4aff3d9
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2009-05-25T06:41:42
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Use N_SYMSIZE instead of directly accessing ‘struct exec’
On Linux alpha ‘struct exec’ does not have an a_syms member, and the
N_SYMSIZE is mapped to 0.
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dcaec44a
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2009-05-20T04:11:57
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Add nlist function
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