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authorFlorian Weimer <fweimer@redhat.com>2018-07-05 18:59:02 +0200
committerFlorian Weimer <fweimer@redhat.com>2018-07-05 19:00:10 +0200
commitd6da5cb6a8e0e8a9ce92b7d951a254cf325248d7 (patch)
tree4c8f50e0ec6b6780eb1eb4dd2b496f0a1b1411d3 /sysdeps
parent1002d708232dda9ebff65f6c1409fa067a01b6e0 (diff)
Add renameat2 function [BZ #17662]
The implementation falls back to renameat if renameat2 is not available in the kernel (or in the kernel headers) and the flags argument is zero. Without kernel support, a non-zero argument returns EINVAL, not ENOSYS. This mirrors what the kernel does for invalid renameat2 flags.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/mach/hurd/i386/libc.abilist1
-rw-r--r--sysdeps/mach/hurd/renameat.c4
-rw-r--r--sysdeps/unix/sysv/linux/aarch64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/alpha/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/alpha/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/arm/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/hppa/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/i386/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/ia64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/nios2/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/renameat.c4
-rw-r--r--sysdeps/unix/sysv/linux/renameat2.c44
-rw-r--r--sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/sh/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/sh/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/sparc/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/64/libc.abilist1
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist1
35 files changed, 102 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index 57091fce00..a9089d9064 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -2034,6 +2034,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/mach/hurd/renameat.c b/sysdeps/mach/hurd/renameat.c
index 43609600d9..7985763f73 100644
--- a/sysdeps/mach/hurd/renameat.c
+++ b/sysdeps/mach/hurd/renameat.c
@@ -22,7 +22,7 @@
/* Rename the file OLD relative to OLDFD to NEW relative to NEWFD. */
int
-renameat (int oldfd, const char *old, int newfd, const char *new)
+__renameat (int oldfd, const char *old, int newfd, const char *new)
{
error_t err;
file_t olddir, newdir;
@@ -45,3 +45,5 @@ renameat (int oldfd, const char *old, int newfd, const char *new)
return __hurd_fail (err);
return 0;
}
+libc_hidden_def (__renameat)
+weak_alias (__renameat, renameat)
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 884d0dfa95..7a272a19bb 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2132,3 +2132,4 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
diff --git a/sysdeps/unix/sysv/linux/alpha/kernel-features.h b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
index c2d4a9f55b..5781cffd5a 100644
--- a/sysdeps/unix/sysv/linux/alpha/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
@@ -35,6 +35,11 @@
#define __ASSUME_RECV_SYSCALL 1
#define __ASSUME_SEND_SYSCALL 1
+/* Support for the renameat2 syscall was added in 3.17. */
+#if __LINUX_KERNEL_VERSION < 0x031100
+# undef __ASSUME_RENAMEAT2
+#endif
+
/* Support for the execveat syscall was added in 4.2. */
#if __LINUX_KERNEL_VERSION < 0x040200
# undef __ASSUME_EXECVEAT
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 28d54b9794..23fec55d97 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2027,6 +2027,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist
index dfde3bd725..b203160889 100644
--- a/sysdeps/unix/sysv/linux/arm/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libc.abilist
@@ -117,6 +117,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 06b00f730a..64809ca403 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -1874,6 +1874,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 1c1cc00d40..4a87f62ad9 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2039,6 +2039,7 @@ GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index f6e17a005f..6bdd0d0443 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -1908,6 +1908,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index b90ea30195..86fc66574b 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -97,6 +97,11 @@
implementation based on p{read,write}v and returning an error for
non supported flags. */
+/* Support for the renameat2 system call was added in kernel 3.15. */
+#if __LINUX_KERNEL_VERSION >= 0x030F00
+# define __ASSUME_RENAMEAT2
+#endif
+
/* Support for the execveat syscall was added in 3.19. */
#if __LINUX_KERNEL_VERSION >= 0x031300
# define __ASSUME_EXECVEAT 1
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index ee054a618d..3226f916eb 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -118,6 +118,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0x98
GLIBC_2.4 _IO_2_1_stdin_ D 0x98
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 227a0581cb..b1074eeed1 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1983,6 +1983,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
index b13b863f06..7db3d05636 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
@@ -48,6 +48,11 @@
# undef __ASSUME_SENDMMSG_SYSCALL
#endif
+/* Support for the renameat2 syscall was added in 3.17. */
+#if __LINUX_KERNEL_VERSION < 0x031100
+# undef __ASSUME_RENAMEAT2
+#endif
+
/* Support for the execveat syscall was added in 4.0. */
#if __LINUX_KERNEL_VERSION < 0x040000
# undef __ASSUME_EXECVEAT
diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
index 18781b3017..b52fc7d6f7 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
@@ -2124,3 +2124,4 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 2d86989cf2..718c74262a 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -1961,6 +1961,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index b8b113e1a5..9b218a9435 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -1959,6 +1959,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 6a3cd13e2d..5a90ab83e7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -1967,6 +1967,7 @@ GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 596ec05379..3005fc9500 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -1962,6 +1962,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 8da18eed57..a87fbbeb6b 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2165,3 +2165,4 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 555751eb12..d56f776a52 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1987,6 +1987,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 80324e41aa..2b5337aab6 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1991,6 +1991,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
index 97b1d354af..d0dfde3897 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
@@ -2222,3 +2222,4 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 15be314921..d505ae0e7d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -117,6 +117,7 @@ GLIBC_2.27 wcstof32x_l F
GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 _Exit F
GLIBC_2.3 _IO_2_1_stderr_ D 0xe0
GLIBC_2.3 _IO_2_1_stdin_ D 0xe0
diff --git a/sysdeps/unix/sysv/linux/renameat.c b/sysdeps/unix/sysv/linux/renameat.c
index 034432b934..f85c5ae0ec 100644
--- a/sysdeps/unix/sysv/linux/renameat.c
+++ b/sysdeps/unix/sysv/linux/renameat.c
@@ -22,7 +22,7 @@
#include <errno.h>
int
-renameat (int oldfd, const char *old, int newfd, const char *new)
+__renameat (int oldfd, const char *old, int newfd, const char *new)
{
#ifdef __NR_renameat
return INLINE_SYSCALL_CALL (renameat, oldfd, old, newfd, new);
@@ -30,3 +30,5 @@ renameat (int oldfd, const char *old, int newfd, const char *new)
return INLINE_SYSCALL_CALL (renameat2, oldfd, old, newfd, new, 0);
#endif
}
+libc_hidden_def (__renameat)
+weak_alias (__renameat, renameat)
diff --git a/sysdeps/unix/sysv/linux/renameat2.c b/sysdeps/unix/sysv/linux/renameat2.c
new file mode 100644
index 0000000000..919bb2a0d4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/renameat2.c
@@ -0,0 +1,44 @@
+/* Linux implementation for renameat2 function.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <stdio.h>
+#include <sysdep.h>
+
+int
+renameat2 (int oldfd, const char *old, int newfd, const char *new,
+ unsigned int flags)
+{
+#if !defined (__NR_renameat) || defined (__ASSUME_RENAMEAT2)
+ return INLINE_SYSCALL_CALL (renameat2, oldfd, old, newfd, new, flags);
+#else
+ if (flags == 0)
+ return __renameat (oldfd, old, newfd, new);
+# ifdef __NR_renameat2
+ /* For non-zero flags, try the renameat2 system call. */
+ int ret = INLINE_SYSCALL_CALL (renameat2, oldfd, old, newfd, new, flags);
+ if (ret != -1 || errno != ENOSYS)
+ /* Preserve non-error/non-ENOSYS return values. */
+ return ret;
+# endif
+ /* No kernel (header) support for renameat2. All flags are
+ unknown. */
+ __set_errno (EINVAL);
+ return -1;
+#endif
+}
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index 436b992251..33f751abc0 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2094,3 +2094,4 @@ GLIBC_2.27 xencrypt F
GLIBC_2.27 xprt_register F
GLIBC_2.27 xprt_unregister F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index f66715f0c9..c4ec93ff43 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -1996,6 +1996,7 @@ GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index bd6242861b..2a6a0abde8 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -1901,6 +1901,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h
index b82d032e6b..05b7dcd037 100644
--- a/sysdeps/unix/sysv/linux/sh/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h
@@ -51,4 +51,9 @@
/* sh only supports ipc syscall. */
#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+/* Support for the renameat2 syscall was added in 4.8. */
+#if __LINUX_KERNEL_VERSION < 0x040800
+# undef __ASSUME_RENAMEAT2
+#endif
+
#endif
diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist
index f2f070fbce..8de0d1711a 100644
--- a/sysdeps/unix/sysv/linux/sh/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libc.abilist
@@ -1878,6 +1878,7 @@ GLIBC_2.27 wcstof64 F
GLIBC_2.27 wcstof64_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 64d714036e..91990a716f 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -41,6 +41,11 @@
/* sparc only supports ipc syscall. */
#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+/* Support for the renameat2 syscall was added in 3.16. */
+#if __LINUX_KERNEL_VERSION < 0x031000
+# undef __ASSUME_RENAMEAT2
+#endif
+
/* SPARC kernel Kconfig does not define CONFIG_CLONE_BACKWARDS, however it
has the same ABI as if it did, implemented by sparc-specific code
(sparc_do_fork).
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 265087f6a8..9858460c9f 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1990,6 +1990,7 @@ GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 16a69812cb..a22b8fb7ca 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -1931,6 +1931,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index fa8c198d13..d5d71cccba 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -1889,6 +1889,7 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F
GLIBC_2.3 __ctype_b_loc F
GLIBC_2.3 __ctype_tolower_loc F
GLIBC_2.3 __ctype_toupper_loc F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 2536971682..e6ad42440e 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2140,3 +2140,4 @@ GLIBC_2.27 wcstof64_l F
GLIBC_2.27 wcstof64x F
GLIBC_2.27 wcstof64x_l F
GLIBC_2.28 fcntl64 F
+GLIBC_2.28 renameat2 F