glibc/glibc-rh2117712-5.patch

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Very limited backport of the following upstream commit, to obtain
the definition of __getrandom_nocancel.
commit 6f4e0fcfa2d2b0915816a3a3a1d48b4763a7dee2
Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Date: Thu Jul 21 10:04:59 2022 -0300
stdlib: Add arc4random, arc4random_buf, and arc4random_uniform (BZ #4417)
With the INTERNAL_SYSCALL_CALL change from this patch already applied:
commit 609c9d0951da387cd523b5db42a82d38dabc37c4
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Sep 29 16:18:06 2022 -0300
malloc: Do not clobber errno on __getrandom_nocancel (BZ #29624)
Use INTERNAL_SYSCALL_CALL instead of INLINE_SYSCALL_CALL. This
requires emulate the semantic for hurd call (so __arc4random_buf
uses the fallback).
Checked on x86_64-linux-gnu.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h
index 8a3772a1fe66271e..14188041c2c0ad57 100644
--- a/sysdeps/generic/not-cancel.h
+++ b/sysdeps/generic/not-cancel.h
@@ -49,5 +49,7 @@
(void) __writev (fd, iov, n)
#define __fcntl64_nocancel(fd, cmd, ...) \
__fcntl64 (fd, cmd, __VA_ARGS__)
+#define __getrandom_nocancel(buf, size, flags) \
+ __getrandom (buf, size, flags)
#endif /* NOT_CANCEL_H */
diff --git a/sysdeps/mach/hurd/not-cancel.h b/sysdeps/mach/hurd/not-cancel.h
index cd320cb721e6ff7e..7a3d2cc3532cf866 100644
--- a/sysdeps/mach/hurd/not-cancel.h
+++ b/sysdeps/mach/hurd/not-cancel.h
@@ -75,6 +75,9 @@ __typeof (__fcntl) __fcntl_nocancel;
#define __fcntl64_nocancel(...) \
__fcntl_nocancel (__VA_ARGS__)
+#define __getrandom_nocancel(buf, size, flags) \
+ __getrandom (buf, size, flags)
+
#if IS_IN (libc)
hidden_proto (__close_nocancel)
hidden_proto (__close_nocancel_nostatus)
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index f06d57426a40227e..d2bb59acddbcfee0 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -68,6 +68,13 @@ __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
}
+static inline int
+__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags)
+{
+ return INTERNAL_SYSCALL_CALL (getrandom, buf, buflen, flags);
+}
+
+
/* Uncancelable fcntl. */
__typeof (__fcntl) __fcntl64_nocancel;