lib: [sysfs.c] fix compiler warnings [-Wsign-compare]

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

diff --git a/lib/sysfs.c b/lib/sysfs.c
index 7bcdabae282add14df98c791a0228075fdfdc4ed..eec1f243b9051aebadd91c56b24948167b6b2599 100644 (file)
--- a/lib/sysfs.c
+++ b/lib/sysfs.c
@@ -19,7 +19,7 @@ char *sysfs_devno_attribute_path(dev_t devno, char *buf,
                len = snprintf(buf, bufsiz, _PATH_SYS_DEVBLOCK "/%d:%d",
                        major(devno), minor(devno));
 
-       return (len < 0 || len + 1 > bufsiz) ? NULL : buf;
+       return (len < 0 || (size_t) len + 1 > bufsiz) ? NULL : buf;
 }
 
 int sysfs_devno_has_attribute(dev_t devno, const char *attr)
@@ -62,7 +62,7 @@ dev_t sysfs_devname_to_devno(const char *name, const char *parent)
                 */
                int len = snprintf(buf, sizeof(buf),
                                _PATH_SYS_BLOCK "/%s/%s/dev", parent, name);
-               if (len < 0 || len + 1 > sizeof(buf))
+               if (len < 0 || (size_t) len + 1 > sizeof(buf))
                        return 0;
                path = buf;
 
@@ -72,7 +72,7 @@ dev_t sysfs_devname_to_devno(const char *name, const char *parent)
                 */
                int len = snprintf(buf, sizeof(buf),
                                _PATH_SYS_BLOCK "/%s/dev", name);
-               if (len < 0 || len + 1 > sizeof(buf))
+               if (len < 0 || (size_t) len + 1 > sizeof(buf))
                        return 0;
                path = buf;
        }