diff options
Diffstat (limited to 'include/libsysfs.h')
| -rw-r--r-- | include/libsysfs.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/libsysfs.h b/include/libsysfs.h index c6dff1e..29194f6 100644 --- a/include/libsysfs.h +++ b/include/libsysfs.h @@ -27,6 +27,24 @@ #include <string.h> #include "dlist.h" +/* + * Defines to prevent buffer overruns + */ +#define safestrcpy(to, from) strncpy(to, from, sizeof(to)-1) +#define safestrcat(to, from) strncat(to, from, sizeof(to) - strlen(to)-1) + +#define safestrcpymax(to, from, max) \ +do { \ + to[max-1] = '\0'; \ + strncpy(to, from, max-1); \ +} while (0) + +#define safestrcatmax(to, from, max) \ +do { \ + to[max-1] = '\0'; \ + strncat(to, from, max - strlen(to)-1); \ +} while (0) + /* * Generic #defines go here.. */ |