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add a service to reap zombies, use it in SLIRP

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SLIRP -smb support wants to fork a process and forget about reaping it.
To please it, add a generic service to register a process id and let
QEMU reap it.  In the future it could be enhanced to pass a status,
but this would be unused.

With this in place, the SIGCHLD signal handler would not stomp on pclose
anymore.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2011-03-09 18:21:10 +01:00 • committed by Anthony Liguori
parent 0298141998
commit 4d54ec7898
4 changed files with 69 additions and 10 deletions
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qemu-common.h
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@ -214,6 +214,7 @@ ssize_t qemu_write_full(int fd, const void *buf, size_t count)
void qemu_set_cloexec(int fd);
#ifndef _WIN32
int qemu_add_child_watch(pid_t pid);
int qemu_eventfd(int pipefd[2]);
int qemu_pipe(int pipefd[2]);
#endif