tree 923812d0f817319b4d09c7eb48b2d6a79002c0f4
parent d08c68fec94b26663257d24dbb8d94f2ed8935cd
author Mark Wielaard <mark@klomp.org> 1551726258 +0100
committer Mark Wielaard <mark@klomp.org> 1561413182 +0200

strip don't mmap debug output file.

Using ELF_C_WRITE_MMAP sometimes causes unexpected errors when disk
space is low. When writing out the file, the output file is first
extended so that it covers the whole file/mmap size. But it might
be that the file system allowed the extension as a sparse file. In
that case writing to the file through the mmap might still fail and
produce a SIGBUS if the disk is full. This is confusing to the user.

Using ELF_C_WRITE will produce "normal" errors when the file cannot
be written out. It also seems to use less memory because the debug
file is created from scratch. So the memory is first read into the
ELF data structure buffers, then written out as a whole. In this case
the mmap output buffer is just overhead.

Signed-off-by: Mark Wielaard <mark@klomp.org>