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26 lines
732 B
26 lines
732 B
7 years ago
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autofs-5.0.7 - fix fcntl return check
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From: Ian Kent <raven@themaw.net>
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When checking for FD_CLOEXEC support the return of the fcntl(2) call to
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get the file descriptor flags is not checked which could result in an
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incorrect result.
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---
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include/automount.h | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/include/automount.h b/include/automount.h
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index e72fa0d..6ced842 100644
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--- a/include/automount.h
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+++ b/include/automount.h
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@@ -547,7 +547,8 @@ static inline void check_cloexec(int fd)
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{
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if (cloexec_works == 0) {
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int fl = fcntl(fd, F_GETFD);
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- cloexec_works = (fl & FD_CLOEXEC) ? 1 : -1;
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+ if (fl != -1)
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+ cloexec_works = (fl & FD_CLOEXEC) ? 1 : -1;
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}
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if (cloexec_works > 0)
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return;
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