kdbus: switch over to generic memfd implementation (ABI+API break)

[elogind.git] / src / shared / missing.h

diff --git a/src/shared/missing.h b/src/shared/missing.h
index 195edfc672b124c59bcf39701825945d0d795bd1..3a7e67e384ea16088ca1c917d4290daaf52865ae 100644 (file)
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -64,6 +64,34 @@
 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
 #endif
 
+#ifndef F_ADD_SEALS
+#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
+#endif
+
+#ifndef F_GET_SEALS
+#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
+#endif
+
+#ifndef F_SEAL_SEAL
+#define F_SEAL_SEAL     0x0001  /* prevent further seals from being set */
+#endif
+
+#ifndef F_SEAL_SHRINK
+#define F_SEAL_SHRINK   0x0002  /* prevent file from shrinking */
+#endif
+
+#ifndef F_SEAL_GROW
+#define F_SEAL_GROW     0x0004  /* prevent file from growing */
+#endif
+
+#ifndef F_SEAL_WRITE
+#define F_SEAL_WRITE    0x0008  /* prevent writes */
+#endif
+
+#ifndef MFD_ALLOW_SEALING
+#define MFD_ALLOW_SEALING 0x0002ULL
+#endif
+
 #ifndef IP_FREEBIND
 #define IP_FREEBIND 15
 #endif
@@ -109,6 +137,13 @@ static inline int pivot_root(const char *new_root, const char *put_old) {
 #  ifndef __NR_fanotify_mark
 #    define __NR_fanotify_mark 301
 #  endif
+#  ifndef __NR_memfd_create
+#    define __NR_memfd_create 319
+#  endif
+#elif defined __arm__
+#  ifndef __NR_memfd_create
+#    define __NR_memfd_create 385
+#  endif
 #elif defined _MIPS_SIM
 #  if _MIPS_SIM == _MIPS_SIM_ABI32
 #    ifndef __NR_fanotify_init
@@ -139,6 +174,9 @@ static inline int pivot_root(const char *new_root, const char *put_old) {
 #  ifndef __NR_fanotify_mark
 #    define __NR_fanotify_mark 339
 #  endif
+#  ifndef __NR_memfd_create
+#    define __NR_memfd_create 356
+#  endif
 #endif
 
 #ifndef HAVE_FANOTIFY_INIT
@@ -166,6 +204,12 @@ static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t ma
 }
 #endif
 
+#ifndef HAVE_MEMFD_CREATE
+static inline int memfd_create(const char *name, uint64_t size, uint64_t flags) {
+        return syscall(__NR_memfd_create, name, size, flags);
+}
+#endif
+
 #ifndef BTRFS_IOCTL_MAGIC
 #define BTRFS_IOCTL_MAGIC 0x94
 #endif