chcpu: check ul_path_readf_s32() return value [coverity: CID 504056]

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/sys-utils/chcpu.c b/sys-utils/chcpu.c
index 43d1f457e0a7b116d2143d83361c83218ef4042d..a1d8b347d28b5006b08756cd7f287aa7ead1c2d6 100644 (file)
--- a/sys-utils/chcpu.c
+++ b/sys-utils/chcpu.c
@@ -103,8 +103,9 @@ static int cpu_enable(struct chcpu_context *ctx, int enable)
                        continue;
                }
 
-               if (ul_path_accessf(ctx->sys, F_OK, "cpu%d/configure", cpu) == 0)
-                       ul_path_readf_s32(ctx->sys, &configured, "cpu%d/configure", cpu);
+               if (ul_path_accessf(ctx->sys, F_OK, "cpu%d/configure", cpu) != 0
+                   || ul_path_readf_s32(ctx->sys, &configured, "cpu%d/configure", cpu) != 0)
+                       configured = -1;
                if (enable) {
                        rc = ul_path_writef_string(ctx->sys, "1", "cpu%d/online", cpu);
                        if (rc != 0 && configured == 0) {