Use execveat syscall in fexecve (bug 22134)

[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / kernel-features.h

diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index d837c221fb38c83c014295b9f45ba09aa904c21e..2e1fe6597a11d76eb5ba564cdb189bedfa3210cc 100644 (file)
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -71,16 +71,6 @@
    2.6.27.  */
 #define __ASSUME_IN_NONBLOCK   1
 
-/* Support for accept4 functionality was added in 2.6.28, but for some
-   architectures using a separate syscall rather than socketcall that
-   syscall was only added later, and some architectures first had
-   socketcall support then a separate syscall.  Define
-   __ASSUME_ACCEPT4_SYSCALL if it is available through a separate
-   syscall, and __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL if it became
-   available through a separate syscall at the same time as through
-   socketcall.  */
-#define __ASSUME_ACCEPT4_SYSCALL       1
-
 /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29.  */
 #define __ASSUME_FUTEX_CLOCK_REALTIME  1
 
@@ -88,35 +78,8 @@
 #define __ASSUME_PREADV        1
 #define __ASSUME_PWRITEV       1
 
-/* Support for recvmmsg functionality was added in 2.6.33.  The macros
-   defined correspond to those for accept4.  */
-#if __LINUX_KERNEL_VERSION >= 0x020621
-# ifdef __ASSUME_SOCKETCALL
-#  define __ASSUME_RECVMMSG_SOCKETCALL 1
-# endif
-# define __ASSUME_RECVMMSG_SYSCALL     1
-# define __ASSUME_RECVMMSG     1
-#endif
-
-/* statfs fills in f_flags since 2.6.36.  */
-#if __LINUX_KERNEL_VERSION >= 0x020624
-# define __ASSUME_STATFS_F_FLAGS       1
-#endif
-
-/* prlimit64 is available in 2.6.36.  */
-#if __LINUX_KERNEL_VERSION >= 0x020624
-# define __ASSUME_PRLIMIT64    1
-#endif
-
-/* Support for sendmmsg functionality was added in 3.0.  The macros
-   defined correspond to those for accept4 and recvmmsg.  */
-#if __LINUX_KERNEL_VERSION >= 0x030000
-# ifdef __ASSUME_SOCKETCALL
-#  define __ASSUME_SENDMMSG_SOCKETCALL 1
-# endif
-# define __ASSUME_SENDMMSG_SYSCALL     1
-# define __ASSUME_SENDMMSG     1
-#endif
+/* Support for sendmmsg functionality was added in 3.0.  */
+#define __ASSUME_SENDMMSG      1
 
 /* On most architectures, most socket syscalls are supported for all
    supported kernel versions, but on some socketcall architectures
@@ -127,7 +90,20 @@
 #define __ASSUME_CONNECT_SYSCALL       1
 #define __ASSUME_RECVFROM_SYSCALL      1
 #define __ASSUME_SENDTO_SYSCALL                1
+#define __ASSUME_ACCEPT4_SYSCALL       1
+#define __ASSUME_RECVMMSG_SYSCALL      1
+#define __ASSUME_SENDMMSG_SYSCALL      1
 
 /* Support for SysV IPC through wired syscalls.  All supported architectures
    either support ipc syscall and/or all the ipc correspondent syscalls.  */
 #define __ASSUME_DIRECT_SYSVIPC_SYSCALLS       1
+
+/* Support for p{read,write}v2 was added in 4.6.  However Linux default
+   implementation does not assume the __ASSUME_* and instead use a fallback
+   implementation based on p{read,write}v and returning an error for
+   non supported flags.  */
+
+/* Support for the execveat syscall was added in 3.19.  */
+#if __LINUX_KERNEL_VERSION >= 0x031300
+# define __ASSUME_EXECVEAT     1
+#endif