This is a third variant attempting to fix the problem of the -L interp_prefix handling not coping well pointing to a full chroot.
Previous versions include: https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg06592.html https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg07304.html Both of the other versions keep an open file descriptor to the directory that is interp_prefix. While this seems to be efficient, they also leak a file descriptor into the guest. This has follow-on effects on the emulation, causing failures e.g. within the LTP testsuite. This version uses only string manipulation and access(2). A plausible criticism of this is the mutex and the cache. Are they really needed? I have no idea. I can imagine removing that is actually more efficient, not needing a lock around a shared data structure. Comments? r~ Richard Henderson (1): util/path: Do not cache all filenames at startup util/path.c | 211 ++++++++++++++-------------------------------------- 1 file changed, 57 insertions(+), 154 deletions(-) -- 2.17.1
