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SubjectRe: Change signal mask after vfork/clone system call
> Now, I could unmask signals for the thread calling vfork, but it seems not a signal-safe solution to me because signals may arrive to this thread until I reestablish the mask. pthread_atfork call comes to rescue to address such issues for fork, but there seems to be nothing for vfork call.

Oh you are wrapping buggy apps ?

exec a tiny app which fixes the signals and execs the proper app

or fix the apps being run...

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