X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fmacro.h;h=969329d152368127cd38e133dc4db6b50ae4334d;hb=fd59d9f29838c3888168554c774003e7ad6d33b0;hp=f91f7de76956da0de546cf4bdba1b9c7c66650ca;hpb=fc6e6d245ee3989c222a2a8cc82a33475f9922f3;p=elogind.git

diff --git a/src/shared/macro.h b/src/shared/macro.h
index f91f7de76..969329d15 100644
--- a/src/shared/macro.h
+++ b/src/shared/macro.h
@@ -28,6 +28,7 @@
 #include <inttypes.h>
 
 #define _printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
+#define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
 #define _sentinel_ __attribute__ ((sentinel))
 #define _noreturn_ __attribute__((noreturn))
 #define _unused_ __attribute__ ((unused))
@@ -158,23 +159,25 @@ static inline size_t ALIGN_TO(size_t l, size_t ali) {
         } while (false)
 #endif
 
+#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
+#define INT_TO_PTR(u) ((void *) ((intptr_t) (u)))
 #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
-#define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
-
-#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
-#define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
+#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
 
+#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
+#define LONG_TO_PTR(u) ((void *) ((intptr_t) (u)))
 #define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
-#define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u)))
-
-#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
-#define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
+#define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u)))
 
-#define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
-#define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
+#define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p)))
+#define INT32_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
+#define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u)))
 
-#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
-#define LONG_TO_PTR(u) ((void*) ((intptr_t) (u)))
+#define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p)))
+#define INT64_TO_PTR(u) ((void *) ((intptr_t) (u)))
+#define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p)))
+#define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u)))
 
 #define memzero(x,l) (memset((x), 0, (l)))
 #define zero(x) (memzero(&(x), sizeof(x)))
@@ -183,6 +186,8 @@ static inline size_t ALIGN_TO(size_t l, size_t ali) {
 
 #define char_array_0(x) x[sizeof(x)-1] = 0;
 
+#define hasprefix(s, prefix) (memcmp(s, prefix, strlen(prefix)) == 0)
+
 #define IOVEC_SET_STRING(i, s)                  \
         do {                                    \
                 struct iovec *_i = &(i);        \
@@ -264,21 +269,11 @@ do {                                                                    \
         }                                                               \
 } while(false)
 
-/* Remove this macro, when the kernel has f_type as unsigned int or long
- * for every architecure. Currently some 64bit architecures (like s390x)
- * have int in the kernel, but long in userspace for f_type, so glibc
- * extends the int to long and carries over the sign. Negative numbers are
- * caused by the 32bit magic constants in linux/magic.h stuffed into the
- * signed int in the kernel and these negative numbers are extended to
- * long, which cannot be simply compared to the magic constants anymore.
+ /* Because statfs.t_type can be int on some architecures, we have to cast
+  * the const magic to the type, otherwise the compiler warns about
+  * signed/unsigned comparison, because the magic can be 32 bit unsigned.
  */
-#define CMP_F_TYPE(f, c)                                                \
-        __extension__ ({                                                \
-                        __SWORD_TYPE _f = (f);                          \
-                        const __SWORD_TYPE _c = (c);                    \
-                        const int _c32 = (c);                           \
-                        (_f == _c || _f == _c32 );                      \
-                })
+#define F_TYPE_CMP(a, b) (a == (typeof(a)) b)
 
 
 /* Returns the number of chars needed to format variables of the
@@ -291,4 +286,7 @@ do {                                                                    \
             sizeof(type) <= 4 ? 10 :                                    \
             sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)])))
 
+#define SET_FLAG(v, flag, b) \
+        (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
+
 #include "log.h"