Merge pull request #13005 from keszybz/fix-gcc-warning

Fix two gcc warnings

src/network/networkd-link.c

@@ -78,11 +78,12 @@ int link_sysctl_ipv6_enabled(Link *link) {
         if (link->sysctl_ipv6_enabled >= 0)
                 return link->sysctl_ipv6_enabled;
 
-        r = sysctl_read_ip_property(AF_INET6, link->ifname, "disable_ipv6", &value);
+        const char *ifname = link->ifname; /* work around bogus gcc warning */
+        r = sysctl_read_ip_property(AF_INET6, ifname, "disable_ipv6", &value);
         if (r < 0)
                 return log_link_warning_errno(link, r,
                                               "Failed to read net.ipv6.conf.%s.disable_ipv6 sysctl property: %m",
-                                              link->ifname);
+                                              ifname);
 
         link->sysctl_ipv6_enabled = value[0] == '0';
         return link->sysctl_ipv6_enabled;

src/shared/dm-util.c

@@ -5,6 +5,7 @@
 
 #include "dm-util.h"
 #include "fd-util.h"
+#include "string-util.h"
 
 int dm_deferred_remove(const char *name) {
 
@@ -25,14 +26,14 @@ int dm_deferred_remove(const char *name) {
         /* Unfortunately, libcryptsetup doesn't provide a proper API for this, hence call the ioctl()
          * directly. */
 
-        if (strlen(name) > sizeof(dm.name)-1)
+        if (strlen(name) >= sizeof(dm.name))
                 return -ENODEV; /* A device with a name longer than this cannot possibly exist */
 
         fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC);
         if (fd < 0)
                 return -errno;
 
-        strncpy(dm.name, name, sizeof(dm.name));
+        strncpy_exact(dm.name, name, sizeof(dm.name));
 
         if (ioctl(fd, DM_DEV_REMOVE, &dm))
                 return -errno;