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| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-27 15:51:58 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-06-07 16:39:08 +0300 |
| commit | 7d92d34ee4c7988f5ef6c8a5ed23d2c3e0837253 (patch) | |
| tree | cb274ac50ff93805c943c50b39d6604c53871737 /linux-user | |
| parent | bef653d92e4e1c47c60f5c020ff6de69dba83478 (diff) | |
| download | qemu-7d92d34ee4c7988f5ef6c8a5ed23d2c3e0837253.tar.gz | |
linux-user: Restart fork() if signals pending
If there is a signal pending during fork() the signal handler will
erroneously be called in both the parent and child, so handle any
pending signals first.
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-20-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index c0d086c2fb..a2d591ed8a 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -5437,6 +5437,11 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) { return -TARGET_EINVAL; } + + if (block_signals()) { + return -TARGET_ERESTARTSYS; + } + fork_start(); ret = fork(); if (ret == 0) { |