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fix editing rot for mach-o .dylib

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https://github.com/upx/upx/issues/57
	modified:   p_mach.cpp
This commit is contained in:
John Reiser 2018-01-11 11:33:15 -08:00
parent 4854c03096
commit ee3f1292d0
1 changed files with 2 additions and 6 deletions
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8
src/p_mach.cpp
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@ -1366,7 +1366,6 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/) // generate e
unsigned const sz_threado = threado_size(); unsigned const sz_threado = threado_size();
MemBuffer space(sz_threado); memset(space, 0, sz_threado); MemBuffer space(sz_threado); memset(space, 0, sz_threado);
fo->write(space, sz_threado); fo->write(space, sz_threado);
sz_mach_headers = fo->getBytesWritten();
} }
else if (my_filetype == Mach_header::MH_DYLIB) { else if (my_filetype == Mach_header::MH_DYLIB) {
Mach_command const *ptr = (Mach_command const *)rawmseg; Mach_command const *ptr = (Mach_command const *)rawmseg;
@ -1398,13 +1397,10 @@ void PackMachBase<T>::pack1(OutputFile *const fo, Filter &/*ft*/) // generate e
} }
memset(&linkitem, 0, sizeof(linkitem)); memset(&linkitem, 0, sizeof(linkitem));
fo->write(&linkitem, sizeof(linkitem)); fo->write(&linkitem, sizeof(linkitem));
fo->write(rawmseg, mhdri.sizeofcmds);
gap = secTEXT.offset - sz_mach_headers;
} }
sz_mach_headers = fo->getBytesWritten(); sz_mach_headers = fo->getBytesWritten();
MemBuffer filler(gap); gap = secTEXT.offset - sz_mach_headers;
memset(filler, 0, gap); MemBuffer filler(gap); filler.clear();
fo->write(filler, gap); fo->write(filler, gap);
sz_mach_headers += gap; sz_mach_headers += gap;