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openSUSE:Leap:15.2
mdadm
0037-mdadm-check-value-returned-by-snprintf-aga...
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File 0037-mdadm-check-value-returned-by-snprintf-against-error.patch of Package mdadm
From fd5b09c9a9107f0393ce194c4aac6e7b8f163e85 Mon Sep 17 00:00:00 2001 From: Krzysztof Smolinski <krzysztof.smolinski@intel.com> Date: Fri, 16 Aug 2019 11:06:17 +0200 Subject: [PATCH] mdadm: check value returned by snprintf against errors Git-commit: fd5b09c9a9107f0393ce194c4aac6e7b8f163e85 Patch-mainline: mdadm-4.1+ References: jsc#SLE-10078, jsc#SLE-9348 GCC 8 checks possible truncation during snprintf more strictly than GCC 7 which result in compilation errors. To fix this problem checking result of snprintf against errors has been added. Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com> Signed-off-by: Jes Sorensen <jsorensen@fb.com> Signed-off-by: Coly Li <colyli@suse.de> --- sysfs.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/sysfs.c b/sysfs.c index c313781..2995713 100644 --- a/sysfs.c +++ b/sysfs.c @@ -1023,12 +1023,20 @@ int sysfs_rules_apply_check(const struct mdinfo *sra, char dname[MAX_SYSFS_PATH_LEN]; char resolved_path[PATH_MAX]; char resolved_dir[PATH_MAX]; + int result; if (sra == NULL || ent == NULL) return -1; - snprintf(dname, MAX_SYSFS_PATH_LEN, "/sys/block/%s/md/", sra->sys_name); - snprintf(fname, MAX_SYSFS_PATH_LEN, "%s/%s", dname, ent->name); + result = snprintf(dname, MAX_SYSFS_PATH_LEN, + "/sys/block/%s/md/", sra->sys_name); + if (result < 0 || result >= MAX_SYSFS_PATH_LEN) + return -1; + + result = snprintf(fname, MAX_SYSFS_PATH_LEN, + "%s/%s", dname, ent->name); + if (result < 0 || result >= MAX_SYSFS_PATH_LEN) + return -1; if (realpath(fname, resolved_path) == NULL || realpath(dname, resolved_dir) == NULL) -- 2.25.0
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