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commit 558168c78ea1eb8efb33959c1da9d6b5a997fd7b
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Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Date: Wed Oct 6 21:48:35 2021 +0530
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support: Also return fd when it is 0
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The fd validity check in open_dev_null checks if fd > 0, which would
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lead to a leaked fd if it is == 0.
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Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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(cherry picked from commit 27b6edbb090f736b101f569620d8ad0e7217ddf8)
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diff --git a/support/support-open-dev-null-range.c b/support/support-open-dev-null-range.c
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index 80d9dba50402ce12..66a850410557351b 100644
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--- a/support/support-open-dev-null-range.c
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+++ b/support/support-open-dev-null-range.c
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@@ -40,16 +40,16 @@ increase_nofile (void)
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static int
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open_dev_null (int flags, mode_t mode)
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{
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- int fd = open64 ("/dev/null", flags, mode);
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- if (fd > 0)
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- return fd;
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+ int fd = open64 ("/dev/null", flags, mode);
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+ if (fd >= 0)
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+ return fd;
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- if (fd < 0 && errno != EMFILE)
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- FAIL_EXIT1 ("open64 (\"/dev/null\", 0x%x, 0%o): %m", flags, mode);
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+ if (fd < 0 && errno != EMFILE)
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+ FAIL_EXIT1 ("open64 (\"/dev/null\", 0x%x, 0%o): %m", flags, mode);
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- increase_nofile ();
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+ increase_nofile ();
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- return xopen ("/dev/null", flags, mode);
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+ return xopen ("/dev/null", flags, mode);
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}
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struct range
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