bool streq_ptr(const char *a, const char *b);
-#define new(t, n) ((t*) malloc(sizeof(t)*(n)))
+#define new(t, n) ((t*) malloc_multiply(sizeof(t), (n)))
#define new0(t, n) ((t*) calloc((n), sizeof(t)))
#define newa(t, n) ((t*) alloca(sizeof(t)*(n)))
-#define newdup(t, p, n) ((t*) memdup(p, sizeof(t)*(n)))
+#define newdup(t, p, n) ((t*) memdup_multiply(p, sizeof(t), (n)))
#define malloc0(n) (calloc((n), 1))
int fd_columns(int fd);
unsigned columns(void);
unsigned columns_uncached(void);
+void columns_cache_reset(int _unused_ signum);
int fd_lines(int fd);
unsigned lines(void);
int fd_wait_for_event(int fd, int event, usec_t timeout);
-void* memdup(const void *p, size_t l);
+void* memdup(const void *p, size_t l) _malloc_;
int is_kernel_thread(pid_t pid);
void closep(int *fd);
void closedirp(DIR **d);
void umaskp(mode_t *u);
+
+_malloc_ static inline void *malloc_multiply(size_t a, size_t b) {
+ if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
+ return NULL;
+
+ return malloc(a * b);
+}
+
+_malloc_ static inline void *memdup_multiply(const void *p, size_t a, size_t b) {
+ if (_unlikely_(b == 0 || a > ((size_t) -1) / b))
+ return NULL;
+
+ return memdup(p, a * b);
+}
+
+bool filename_is_safe(const char *p);
+bool string_is_safe(const char *p);