92 lines
3.5 KiB
Diff
92 lines
3.5 KiB
Diff
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From d928f8d073f87fdacaf9e93b616f5b84695036e3 Mon Sep 17 00:00:00 2001
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From: yangjiaqi <yangjiaqi16@huawei.com>
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Date: Wed, 22 Mar 2023 15:31:34 +0800
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Subject: [PATCH] proc: fix /proc/diskstats output format
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---
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src/proc_fuse.c | 24 +++++++++++++++++++-----
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1 file changed, 19 insertions(+), 5 deletions(-)
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diff --git a/src/proc_fuse.c b/src/proc_fuse.c
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index fe81cad..ce22974 100644
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--- a/src/proc_fuse.c
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+++ b/src/proc_fuse.c
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@@ -784,10 +784,10 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
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memset(lbuf, 0, 256);
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if (stats.read || stats.write || stats.read_merged || stats.write_merged ||
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stats.read_sectors || stats.write_sectors || stats.read_ticks ||
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- stats.write_ticks || stats.ios_pgr || stats.total_ticks || stats.rq_ticks ||
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+ stats.write_ticks || stats.ios_pgr || stats.total_ticks || stats.rq_ticks || stats.discard ||
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stats.discard_merged || stats.discard_sectors || stats.discard_ticks) {
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if (need_record_diskstats(stats.major, stats.minor)) {
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- sscanf(line, "%u %u %71s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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+ sscanf(line, "%u %u %71s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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&stats.major,
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&stats.minor,
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tmp_dev_name,
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@@ -802,11 +802,12 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
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&stats.ios_pgr,
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&stats.total_ticks,
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&stats.rq_ticks,
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+ &stats.discard,
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&stats.discard_merged,
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&stats.discard_sectors,
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&stats.discard_ticks);
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}
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- snprintf(lbuf, 256, "%u %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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+ ret = snprintf(lbuf, 256, "%u %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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stats.major,
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stats.minor,
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stats.dev_name,
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@@ -821,11 +822,17 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
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stats.ios_pgr,
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stats.total_ticks,
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stats.rq_ticks,
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+ stats.discard,
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stats.discard_merged,
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stats.discard_sectors,
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stats.discard_ticks);
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+ if(ret >= 256) {
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+ lxcfs_error("Insufficient buffer for %u:%u %s diskstats",
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+ stats.major, stats.minor, stats.dev_name);
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+ continue;
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+ }
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} else if (need_record_diskstats(stats.major, stats.minor)) {
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- sscanf(line, "%u %u %71s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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+ sscanf(line, "%u %u %71s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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&stats.major,
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&stats.minor,
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tmp_dev_name,
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@@ -840,10 +847,11 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
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&stats.ios_pgr,
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&stats.total_ticks,
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&stats.rq_ticks,
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+ &stats.discard,
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&stats.discard_merged,
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&stats.discard_sectors,
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&stats.discard_ticks);
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- snprintf(lbuf, 256, "%u %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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+ ret = snprintf(lbuf, 256, "%u %u %s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
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stats.major,
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stats.minor,
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stats.dev_name,
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@@ -858,9 +866,15 @@ static int proc_diskstats_read(char *buf, size_t size, off_t offset,
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stats.ios_pgr,
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stats.total_ticks,
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stats.rq_ticks,
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+ stats.discard,
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stats.discard_merged,
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stats.discard_sectors,
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stats.discard_ticks);
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+ if(ret >= 256) {
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+ lxcfs_error("Insufficient buffer for %u:%u %s diskstats",
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+ stats.major, stats.minor, stats.dev_name);
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+ continue;
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+ }
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} else {
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continue;
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}
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--
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2.30.0
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