From: Thomas Weißschuh <tho...@t-8ch.de> A process can opt-out of coredump creation by calling prctl(PR_SET_DUMPABLE, 0). linux-user passes this call from the guest through to the operating system. >From there it can be read back again to avoid creating coredumps from qemu-user itself if the guest chose so.
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> Signed-off-by: Thomas Weißschuh <tho...@t-8ch.de> Message-Id: <20240120-qemu-user-dumpable-v3-2-6aa410c93...@t-8ch.de> Signed-off-by: Richard Henderson <richard.hender...@linaro.org> --- linux-user/elfload.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index c596871938..daf7ef8435 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -2,6 +2,7 @@ #include "qemu/osdep.h" #include <sys/param.h> +#include <sys/prctl.h> #include <sys/resource.h> #include <sys/shm.h> @@ -4667,6 +4668,11 @@ static int elf_core_dump(int signr, const CPUArchState *env) init_note_info(&info); errno = 0; + + if (prctl(PR_GET_DUMPABLE) == 0) { + return 0; + } + if (getrlimit(RLIMIT_CORE, &dumpsize) == 0 && dumpsize.rlim_cur == 0) { return 0; } -- 2.34.1