42 lines
1.2 KiB
Diff
42 lines
1.2 KiB
Diff
From 8301666f3029ff4d9089a273a45ec47671d964c1 Mon Sep 17 00:00:00 2001
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From: Andrew Zaborowski <andrew.zaborowski@intel.com>
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Date: Fri, 29 Mar 2024 18:43:55 -0700
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Subject: [PATCH 02/44] Check fflush() return value
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Since fprintf() may buffer output, as noted in 470a64b19062, fclose()'s
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error value was also being checked for the write errors. However in
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8d7c78304fb9 an fflush() was added in between meaning that these
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buffered write errors were again unchecked. Some actual errors were
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not being logged, in my case -ENOSPCs.
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Make the fclose and fflush branches look similar.
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Fixes: 8d7c78304fb9 ("Flush file before closing")
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---
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activate.c | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/activate.c b/activate.c
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index e30d0f0..0c1e7a1 100644
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--- a/activate.c
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+++ b/activate.c
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@@ -82,10 +82,13 @@ static void activate_mapping(struct irq_info *info, void *data __attribute__((un
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cpumask_scnprintf(buf, PATH_MAX, applied_mask);
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ret = fprintf(file, "%s", buf);
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errsave = errno;
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- fflush(file);
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+ if (ret >= 0 && fflush(file)) {
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+ ret = -1;
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+ errsave = errno;
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+ }
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if (fclose(file)) {
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+ ret = -1;
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errsave = errno;
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- goto error;
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}
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if (ret < 0)
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goto error;
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--
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2.47.0
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