diff options
Diffstat (limited to 'import-layers/yocto-poky/scripts/relocate_sdk.py')
| -rwxr-xr-x | import-layers/yocto-poky/scripts/relocate_sdk.py | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/import-layers/yocto-poky/scripts/relocate_sdk.py b/import-layers/yocto-poky/scripts/relocate_sdk.py deleted file mode 100755 index c752fa2c6..000000000 --- a/import-layers/yocto-poky/scripts/relocate_sdk.py +++ /dev/null @@ -1,266 +0,0 @@ -#!/usr/bin/env python3 -# -# Copyright (c) 2012 Intel Corporation -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 2 as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. -# See the GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -# -# DESCRIPTION -# This script is called by the SDK installer script. It replaces the dynamic -# loader path in all binaries and also fixes the SYSDIR paths/lengths and the -# location of ld.so.cache in the dynamic loader binary -# -# AUTHORS -# Laurentiu Palcu <laurentiu.palcu@intel.com> -# - -import struct -import sys -import stat -import os -import re -import errno - -if sys.version < '3': - def b(x): - return x -else: - def b(x): - return x.encode(sys.getfilesystemencoding()) - -old_prefix = re.compile(b("##DEFAULT_INSTALL_DIR##")) - -def get_arch(): - f.seek(0) - e_ident =f.read(16) - ei_mag0,ei_mag1_3,ei_class = struct.unpack("<B3sB11x", e_ident) - - if (ei_mag0 != 0x7f and ei_mag1_3 != "ELF") or ei_class == 0: - return 0 - - if ei_class == 1: - return 32 - elif ei_class == 2: - return 64 - -def parse_elf_header(): - global e_type, e_machine, e_version, e_entry, e_phoff, e_shoff, e_flags,\ - e_ehsize, e_phentsize, e_phnum, e_shentsize, e_shnum, e_shstrndx - - f.seek(0) - elf_header = f.read(64) - - if arch == 32: - # 32bit - hdr_fmt = "<HHILLLIHHHHHH" - hdr_size = 52 - else: - # 64bit - hdr_fmt = "<HHIQQQIHHHHHH" - hdr_size = 64 - - e_type, e_machine, e_version, e_entry, e_phoff, e_shoff, e_flags,\ - e_ehsize, e_phentsize, e_phnum, e_shentsize, e_shnum, e_shstrndx =\ - struct.unpack(hdr_fmt, elf_header[16:hdr_size]) - -def change_interpreter(elf_file_name): - if arch == 32: - ph_fmt = "<IIIIIIII" - else: - ph_fmt = "<IIQQQQQQ" - - """ look for PT_INTERP section """ - for i in range(0,e_phnum): - f.seek(e_phoff + i * e_phentsize) - ph_hdr = f.read(e_phentsize) - if arch == 32: - # 32bit - p_type, p_offset, p_vaddr, p_paddr, p_filesz,\ - p_memsz, p_flags, p_align = struct.unpack(ph_fmt, ph_hdr) - else: - # 64bit - p_type, p_flags, p_offset, p_vaddr, p_paddr, \ - p_filesz, p_memsz, p_align = struct.unpack(ph_fmt, ph_hdr) - - """ change interpreter """ - if p_type == 3: - # PT_INTERP section - f.seek(p_offset) - # External SDKs with mixed pre-compiled binaries should not get - # relocated so look for some variant of /lib - fname = f.read(11) - if fname.startswith(b("/lib/")) or fname.startswith(b("/lib64/")) or \ - fname.startswith(b("/lib32/")) or fname.startswith(b("/usr/lib32/")) or \ - fname.startswith(b("/usr/lib32/")) or fname.startswith(b("/usr/lib64/")): - break - if p_filesz == 0: - break - if (len(new_dl_path) >= p_filesz): - print("ERROR: could not relocate %s, interp size = %i and %i is needed." \ - % (elf_file_name, p_memsz, len(new_dl_path) + 1)) - break - dl_path = new_dl_path + b("\0") * (p_filesz - len(new_dl_path)) - f.seek(p_offset) - f.write(dl_path) - break - -def change_dl_sysdirs(elf_file_name): - if arch == 32: - sh_fmt = "<IIIIIIIIII" - else: - sh_fmt = "<IIQQQQIIQQ" - - """ read section string table """ - f.seek(e_shoff + e_shstrndx * e_shentsize) - sh_hdr = f.read(e_shentsize) - if arch == 32: - sh_offset, sh_size = struct.unpack("<16xII16x", sh_hdr) - else: - sh_offset, sh_size = struct.unpack("<24xQQ24x", sh_hdr) - - f.seek(sh_offset) - sh_strtab = f.read(sh_size) - - sysdirs = sysdirs_len = "" - - """ change ld.so.cache path and default libs path for dynamic loader """ - for i in range(0,e_shnum): - f.seek(e_shoff + i * e_shentsize) - sh_hdr = f.read(e_shentsize) - - sh_name, sh_type, sh_flags, sh_addr, sh_offset, sh_size, sh_link,\ - sh_info, sh_addralign, sh_entsize = struct.unpack(sh_fmt, sh_hdr) - - name = sh_strtab[sh_name:sh_strtab.find(b("\0"), sh_name)] - - """ look only into SHT_PROGBITS sections """ - if sh_type == 1: - f.seek(sh_offset) - """ default library paths cannot be changed on the fly because """ - """ the string lengths have to be changed too. """ - if name == b(".sysdirs"): - sysdirs = f.read(sh_size) - sysdirs_off = sh_offset - sysdirs_sect_size = sh_size - elif name == b(".sysdirslen"): - sysdirslen = f.read(sh_size) - sysdirslen_off = sh_offset - elif name == b(".ldsocache"): - ldsocache_path = f.read(sh_size) - new_ldsocache_path = old_prefix.sub(new_prefix, ldsocache_path) - new_ldsocache_path = new_ldsocache_path.rstrip(b("\0")) - if (len(new_ldsocache_path) >= sh_size): - print("ERROR: could not relocate %s, .ldsocache section size = %i and %i is needed." \ - % (elf_file_name, sh_size, len(new_ldsocache_path))) - sys.exit(-1) - # pad with zeros - new_ldsocache_path += b("\0") * (sh_size - len(new_ldsocache_path)) - # write it back - f.seek(sh_offset) - f.write(new_ldsocache_path) - elif name == b(".gccrelocprefix"): - offset = 0 - while (offset + 4096) <= sh_size: - path = f.read(4096) - new_path = old_prefix.sub(new_prefix, path) - new_path = new_path.rstrip(b("\0")) - if (len(new_path) >= 4096): - print("ERROR: could not relocate %s, max path size = 4096 and %i is needed." \ - % (elf_file_name, len(new_path))) - sys.exit(-1) - # pad with zeros - new_path += b("\0") * (4096 - len(new_path)) - #print "Changing %s to %s at %s" % (str(path), str(new_path), str(offset)) - # write it back - f.seek(sh_offset + offset) - f.write(new_path) - offset = offset + 4096 - if sysdirs != "" and sysdirslen != "": - paths = sysdirs.split(b("\0")) - sysdirs = b("") - sysdirslen = b("") - for path in paths: - """ exit the loop when we encounter first empty string """ - if path == b(""): - break - - new_path = old_prefix.sub(new_prefix, path) - sysdirs += new_path + b("\0") - - if arch == 32: - sysdirslen += struct.pack("<L", len(new_path)) - else: - sysdirslen += struct.pack("<Q", len(new_path)) - - """ pad with zeros """ - sysdirs += b("\0") * (sysdirs_sect_size - len(sysdirs)) - - """ write the sections back """ - f.seek(sysdirs_off) - f.write(sysdirs) - f.seek(sysdirslen_off) - f.write(sysdirslen) - -# MAIN -if len(sys.argv) < 4: - sys.exit(-1) - -# In python > 3, strings may also contain Unicode characters. So, convert -# them to bytes -if sys.version_info < (3,): - new_prefix = sys.argv[1] - new_dl_path = sys.argv[2] -else: - new_prefix = sys.argv[1].encode() - new_dl_path = sys.argv[2].encode() - -executables_list = sys.argv[3:] - -for e in executables_list: - perms = os.stat(e)[stat.ST_MODE] - if os.access(e, os.W_OK|os.R_OK): - perms = None - else: - os.chmod(e, perms|stat.S_IRWXU) - - try: - f = open(e, "r+b") - except IOError: - exctype, ioex = sys.exc_info()[:2] - if ioex.errno == errno.ETXTBSY: - print("Could not open %s. File used by another process.\nPlease "\ - "make sure you exit all processes that might use any SDK "\ - "binaries." % e) - else: - print("Could not open %s: %s(%d)" % (e, ioex.strerror, ioex.errno)) - sys.exit(-1) - - # Save old size and do a size check at the end. Just a safety measure. - old_size = os.path.getsize(e) - if old_size >= 64: - arch = get_arch() - if arch: - parse_elf_header() - change_interpreter(e) - change_dl_sysdirs(e) - - """ change permissions back """ - if perms: - os.chmod(e, perms) - - f.close() - - if old_size != os.path.getsize(e): - print("New file size for %s is different. Looks like a relocation error!", e) - sys.exit(-1) - |
