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46 lines
1.5 KiB
46 lines
1.5 KiB
From fd5b09c9a9107f0393ce194c4aac6e7b8f163e85 Mon Sep 17 00:00:00 2001 |
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From: Krzysztof Smolinski <krzysztof.smolinski@intel.com> |
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Date: Fri, 16 Aug 2019 11:06:17 +0200 |
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Subject: [RHEL7.8 PATCH V2 35/47] mdadm: check value returned by snprintf |
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against errors |
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GCC 8 checks possible truncation during snprintf more strictly |
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than GCC 7 which result in compilation errors. To fix this |
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problem checking result of snprintf against errors has been added. |
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Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com> |
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Signed-off-by: Jes Sorensen <jsorensen@fb.com> |
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--- |
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sysfs.c | 12 ++++++++++-- |
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1 file changed, 10 insertions(+), 2 deletions(-) |
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diff --git a/sysfs.c b/sysfs.c |
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index c313781..2995713 100644 |
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--- a/sysfs.c |
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+++ b/sysfs.c |
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@@ -1023,12 +1023,20 @@ int sysfs_rules_apply_check(const struct mdinfo *sra, |
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char dname[MAX_SYSFS_PATH_LEN]; |
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char resolved_path[PATH_MAX]; |
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char resolved_dir[PATH_MAX]; |
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+ int result; |
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if (sra == NULL || ent == NULL) |
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return -1; |
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- snprintf(dname, MAX_SYSFS_PATH_LEN, "/sys/block/%s/md/", sra->sys_name); |
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- snprintf(fname, MAX_SYSFS_PATH_LEN, "%s/%s", dname, ent->name); |
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+ result = snprintf(dname, MAX_SYSFS_PATH_LEN, |
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+ "/sys/block/%s/md/", sra->sys_name); |
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+ if (result < 0 || result >= MAX_SYSFS_PATH_LEN) |
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+ return -1; |
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+ |
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+ result = snprintf(fname, MAX_SYSFS_PATH_LEN, |
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+ "%s/%s", dname, ent->name); |
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+ if (result < 0 || result >= MAX_SYSFS_PATH_LEN) |
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+ return -1; |
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if (realpath(fname, resolved_path) == NULL || |
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realpath(dname, resolved_dir) == NULL) |
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-- |
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2.7.5 |
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