From: Florian Weimer <fweimer@redhat.com>
To: libc-alpha@sourceware.org
Subject: [PATCH 13/26] Linux: getrandom syscall number is always available
Date: Sun, 09 Feb 2020 20:20:00 -0000 [thread overview]
Message-ID: <ac0ba6febb01f1f794d2067d80906539f9a10b9d.1581279333.git.fweimer@redhat.com> (raw)
In-Reply-To: <cover.1581279333.git.fweimer@redhat.com>
Due to the built-in tables, __NR_getrandom is always defined.
---
sysdeps/unix/sysv/linux/getentropy.c | 9 ---------
sysdeps/unix/sysv/linux/getrandom.c | 13 -------------
2 files changed, 22 deletions(-)
diff --git a/sysdeps/unix/sysv/linux/getentropy.c b/sysdeps/unix/sysv/linux/getentropy.c
index 5d0b8d10c1..2f3a4e4692 100644
--- a/sysdeps/unix/sysv/linux/getentropy.c
+++ b/sysdeps/unix/sysv/linux/getentropy.c
@@ -21,7 +21,6 @@
#include <errno.h>
#include <unistd.h>
-#ifdef __NR_getrandom
/* Write LENGTH bytes of randomness starting at BUFFER. Return 0 on
success and -1 on failure. */
int
@@ -63,11 +62,3 @@ getentropy (void *buffer, size_t length)
}
return 0;
}
-#else
-int
-getentropy (void *buffer, size_t length)
-{
- __set_errno (ENOSYS);
- return -1;
-}
-#endif
diff --git a/sysdeps/unix/sysv/linux/getrandom.c b/sysdeps/unix/sysv/linux/getrandom.c
index 309beadf72..63b8d36bf4 100644
--- a/sysdeps/unix/sysv/linux/getrandom.c
+++ b/sysdeps/unix/sysv/linux/getrandom.c
@@ -21,7 +21,6 @@
#include <unistd.h>
#include <sysdep-cancel.h>
-#ifdef __NR_getrandom
/* Write up to LENGTH bytes of randomness starting at BUFFER.
Return the number of bytes written, or -1 on error. */
ssize_t
@@ -29,17 +28,5 @@ __getrandom (void *buffer, size_t length, unsigned int flags)
{
return SYSCALL_CANCEL (getrandom, buffer, length, flags);
}
-#else
-/* Always provide a definition, even if the kernel headers lack the
- system call number. */
-ssize_t
-__getrandom (void *buffer, size_t length, unsigned int flags)
-{
- /* Ideally, we would add a cancellation point here, but we currently
- cannot do so inside libc. */
- __set_errno (ENOSYS);
- return -1;
-}
-#endif
libc_hidden_def (__getrandom)
weak_alias (__getrandom, getrandom)
--
2.24.1
next prev parent reply other threads:[~2020-02-09 20:20 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-09 20:19 [PATCH 00/26] Linux cleanups enabled by built-in system call tables Florian Weimer
2020-02-09 20:19 ` [PATCH 02/26] Linux: renameat2 syscall number is always available Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:19 ` [PATCH 03/26] Linux: copy_file_range " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:19 ` [PATCH 01/26] Linux: Enhance glibcsyscalls.h to support listing system calls Florian Weimer
2020-02-27 22:14 ` Adhemerval Zanella
2020-05-11 10:10 ` Florian Weimer
2020-02-09 20:19 ` [PATCH 04/26] Linux: mlock2 syscall number is always available Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 15/26] Linux: pkey_mprotect " Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 07/26] Linux: sched_setaffinity " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 14/26] Linux: rt_sigqueueinfo " Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 08/26] Linux: sched_getaffinity " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` Florian Weimer [this message]
2020-02-27 23:20 ` [PATCH 13/26] Linux: getrandom " Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 05/26] Linux: mq_* syscall numbers are " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 09/26] Linux: sigaltstack syscall number is " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 06/26] Linux: statx " Florian Weimer
2020-02-27 23:06 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 10/26] Linux: Clean up pread64/pwrite64 system call names Florian Weimer
2020-02-27 23:08 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 12/26] Linux: Clean up preadv, pwritev " Florian Weimer
2020-02-27 23:19 ` Adhemerval Zanella
2020-02-09 20:20 ` [PATCH 11/26] Linux: Clean up preadv2, pwritev2 " Florian Weimer
2020-02-27 23:19 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 25/26] m68k: getpagesize syscall number is always available Florian Weimer
2020-02-27 23:47 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 26/26] microblaze: vfork " Florian Weimer
2020-02-27 23:47 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 16/26] Linux: set_tid_address syscall number " Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 18/26] Linux: getdents64 syscall number is always available on MIPS Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 22/26] ia64: Do not define __NR_semtimedop in <sysdep.h> Florian Weimer
2020-02-27 23:46 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 17/26] Linux: exit_group syscall number is always available Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 20/26] Linux: set_robust_list " Florian Weimer
2020-02-27 23:46 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 24/26] Linux: epoll_pwait " Florian Weimer
2020-02-27 23:47 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 21/26] Linux: open_by_handle_at " Florian Weimer
2020-02-27 23:46 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 23/26] x86_64: Do not define __NR_semtimedop in <sysdep.h> Florian Weimer
2020-02-27 23:46 ` Adhemerval Zanella
2020-02-09 20:21 ` [PATCH 19/26] Linux: pciconfig_iobase syscall number is always available on alpha Florian Weimer
2020-02-27 23:31 ` Adhemerval Zanella
2020-02-10 23:25 ` [PATCH 00/26] Linux cleanups enabled by built-in system call tables Lukasz Majewski
2020-02-10 23:56 ` Joseph Myers
2020-02-11 7:47 ` Florian Weimer
2020-02-11 11:07 ` Florian Weimer
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