[devel] [git update] packages/glibc: heads/arm-port
Kirill A. Shutemov
=?iso-8859-1?q?k=2Eshutemov_=CE=C1_velesys=2Ecom?=
Ср Авг 29 16:18:27 MSD 2007
On [Wed, 29.08.2007 15:53], Dmitry V. Levin wrote:
> On Wed, Aug 29, 2007 at 02:45:18PM +0300, Kirill A. Shutemov wrote:
> ld-2.5.so это не pie executable, а shared object.
В чём разница? До сих пор я думал, что и pie, и shared library являются
shared object. Теперь совсем запутался...
>
> Проблема в том, что эвристика /usr/lib/rpm/fixup-libraries работает на x86*,
> но на ARM'е не распознаёт в ld-2.5.so, libc-2.5.so и libcrypt-2.5.so
> исполняемых файлов.
Действительно не работает :(
Можете что-нибудь подсказать по этому выводу?
[builder на localhost ~]$ bash -x /usr/lib/rpm/fixup-libraries /lib/ld-2.5.so
+ for file in '"$@"'
++ file -b /lib/ld-2.5.so
+ type='ELF 32-bit LSB shared object, ARM, version 1 (SYSV), not stripped'
+ case "$type" in
++ readelf -h /lib/ld-2.5.so
+ file_header='ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2'\''s complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: DYN (Shared object file)
Machine: ARM
Version: 0x1
Entry point address: 0x8a0
Start of program headers: 52 (bytes into file)
Start of section headers: 104200 (bytes into file)
Flags: 0x4000002, has entry point, Version4 EABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 6
Size of section headers: 40 (bytes)
Number of section headers: 27
Section header string table index: 24'
++ printf %s 'ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2'\''s complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: DYN (Shared object file)
Machine: ARM
Version: 0x1
Entry point address: 0x8a0
Start of program headers: 52 (bytes into file)
Start of section headers: 104200 (bytes into file)
Flags: 0x4000002, has entry point, Version4 EABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 6
Size of section headers: 40 (bytes)
Number of section headers: 27
Section header string table index: 24'
++ sed -ne 's/^ \+Entry point address: \+0x0*\([0-9a-f]\+\)$/\1/p'
+ entry=8a0
+ '[' -n 8a0 ']'
++ readelf -S /lib/ld-2.5.so
+ section_header='There are 27 section headers, starting at offset 0x19708:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[ 0] NULL 00000000 000000 000000 00 0 0 0
[ 1] .hash HASH 000000f4 0000f4 000124 04 A 3 0 4
[ 2] .gnu.hash GNU_HASH 00000218 000218 00014c 04 A 3 0 4
[ 3] .dynsym DYNSYM 00000364 000364 0001d0 10 A 4 2 4
[ 4] .dynstr STRTAB 00000534 000534 0001b0 00 A 0 0 1
[ 5] .gnu.version VERSYM 000006e4 0006e4 00003a 02 A 3 0 2
[ 6] .gnu.version_d VERDEF 00000720 000720 00005c 00 A 4 3 4
[ 7] .rel.dyn REL 0000077c 00077c 0000a0 08 A 3 0 4
[ 8] .rel.plt REL 0000081c 00081c 000028 08 A 3 9 4
[ 9] .plt PROGBITS 00000844 000844 000050 04 AX 0 0 4
[10] .text PROGBITS 000008a0 0008a0 0155ec 00 AX 0 0 16
[11] __libc_freeres_fn PROGBITS 00015e8c 015e8c 000144 00 AX 0 0 4
[12] .rodata PROGBITS 00015fd0 015fd0 002950 00 A 0 0 4
[13] .ARM.extab PROGBITS 00018920 018920 000030 00 A 0 0 4
[14] .ARM.exidx ARM_EXIDX 00018950 018950 000068 00 AL 10 0 4
[15] .eh_frame_hdr PROGBITS 000189b8 0189b8 00001c 00 A 0 0 4
[16] .eh_frame PROGBITS 000189d4 0189d4 00007c 00 A 0 0 4
[17] .data.rel.ro PROGBITS 00020d50 018d50 000198 00 WA 0 0 8
[18] .dynamic DYNAMIC 00020ee8 018ee8 0000c8 08 WA 4 0 4
[19] .got PROGBITS 00020fb0 018fb0 00004c 04 WA 0 0 4
[20] .data PROGBITS 00021000 019000 0005f8 00 WA 0 0 8
[21] __libc_subfreeres PROGBITS 000215f8 0195f8 000004 00 WA 0 0 4
[22] .bss NOBITS 000215fc 0195fc 0000e4 00 WA 0 0 4
[23] .ARM.attributes ARM_ATTRIBUTES 00000000 0195fc 000010 00 0 0 1
[24] .shstrtab STRTAB 00000000 01960c 0000f9 00 0 0 1
[25] .symtab SYMTAB 00000000 019b40 002cd0 10 26 690 4
[26] .strtab STRTAB 00000000 01c810 0014df 00 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)'
++ sed -ne 's/^ *\[ *[0-9]\+\] \.text \+PROGBITS \+0*\([0-9a-f]\+\) \+.*/\1/p'
++ printf %s 'There are 27 section headers, starting at offset 0x19708:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[ 0] NULL 00000000 000000 000000 00 0 0 0
[ 1] .hash HASH 000000f4 0000f4 000124 04 A 3 0 4
[ 2] .gnu.hash GNU_HASH 00000218 000218 00014c 04 A 3 0 4
[ 3] .dynsym DYNSYM 00000364 000364 0001d0 10 A 4 2 4
[ 4] .dynstr STRTAB 00000534 000534 0001b0 00 A 0 0 1
[ 5] .gnu.version VERSYM 000006e4 0006e4 00003a 02 A 3 0 2
[ 6] .gnu.version_d VERDEF 00000720 000720 00005c 00 A 4 3 4
[ 7] .rel.dyn REL 0000077c 00077c 0000a0 08 A 3 0 4
[ 8] .rel.plt REL 0000081c 00081c 000028 08 A 3 9 4
[ 9] .plt PROGBITS 00000844 000844 000050 04 AX 0 0 4
[10] .text PROGBITS 000008a0 0008a0 0155ec 00 AX 0 0 16
[11] __libc_freeres_fn PROGBITS 00015e8c 015e8c 000144 00 AX 0 0 4
[12] .rodata PROGBITS 00015fd0 015fd0 002950 00 A 0 0 4
[13] .ARM.extab PROGBITS 00018920 018920 000030 00 A 0 0 4
[14] .ARM.exidx ARM_EXIDX 00018950 018950 000068 00 AL 10 0 4
[15] .eh_frame_hdr PROGBITS 000189b8 0189b8 00001c 00 A 0 0 4
[16] .eh_frame PROGBITS 000189d4 0189d4 00007c 00 A 0 0 4
[17] .data.rel.ro PROGBITS 00020d50 018d50 000198 00 WA 0 0 8
[18] .dynamic DYNAMIC 00020ee8 018ee8 0000c8 08 WA 4 0 4
[19] .got PROGBITS 00020fb0 018fb0 00004c 04 WA 0 0 4
[20] .data PROGBITS 00021000 019000 0005f8 00 WA 0 0 8
[21] __libc_subfreeres PROGBITS 000215f8 0195f8 000004 00 WA 0 0 4
[22] .bss NOBITS 000215fc 0195fc 0000e4 00 WA 0 0 4
[23] .ARM.attributes ARM_ATTRIBUTES 00000000 0195fc 000010 00 0 0 1
[24] .shstrtab STRTAB 00000000 01960c 0000f9 00 0 0 1
[25] .symtab SYMTAB 00000000 019b40 002cd0 10 26 690 4
[26] .strtab STRTAB 00000000 01c810 0014df 00 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings)
I (info), L (link order), G (group), x (unknown)
O (extra OS processing required) o (OS specific), p (processor specific)'
+ text=8a0
+ '[' -n 8a0 ']'
+ '[' 8a0 = 8a0 ']'
+ readelf -s /lib/ld-2.5.so
+ fgrep -wqs __preinit_array_end
+ '[' -n /lib/ld-2.5.so ']'
+ chmod -v u+w,a-x,ug-s /lib/ld-2.5.so
/bin/chmod: changing permissions of `/lib/ld-2.5.so': Operation not permitted
failed to change mode of `/lib/ld-2.5.so' to 0644 (rw-r--r--)
--
Regards, Kirill A. Shutemov
+ Belarus, Minsk
+ Velesys LLC, http://www.velesys.com/
+ ALT Linux Team, http://www.altlinux.com/
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