diff options
| -rw-r--r-- | Makefile.in | 1 | ||||
| -rw-r--r-- | extra/Configs/Config.in | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/Makefile.in | 1 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/bits/kernel-features.h | 5 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/getrandom.c | 14 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/stubs.c | 4 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/sys/random.h | 33 |
7 files changed, 59 insertions, 1 deletions
diff --git a/Makefile.in b/Makefile.in index 5d60ddaba..a64fec956 100644 --- a/Makefile.in +++ b/Makefile.in @@ -310,6 +310,7 @@ HEADERS_RM-$(UCLIBC_LINUX_SPECIFIC) += \ sys/perm.h \ sys/personality.h \ sys/prctl.h \ + sys/random.h \ sys/reboot.h \ sys/sendfile.h \ bits/signalfd.h \ diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index f5210cdf9..35c1cee9a 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -1025,7 +1025,7 @@ config UCLIBC_LINUX_SPECIFIC help accept4(), bdflush(), capget(), capset(), eventfd(), fallocate(), - fstatfs(), inotify_*(), ioperm(), iopl(), + fstatfs(), getrandom(), inotify_*(), ioperm(), iopl(), madvise(), modify_ldt(), pipe2(), personality(), prctl()/arch_prctl(), pivot_root(), modify_ldt(), ppoll(), readahead(), reboot(), remap_file_pages(), diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in index 8ee956b6b..82525984a 100644 --- a/libc/sysdeps/linux/common/Makefile.in +++ b/libc/sysdeps/linux/common/Makefile.in @@ -27,6 +27,7 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \ eventfd.c \ eventfd_read.c \ eventfd_write.c \ + getrandom.c \ inotify.c \ ioperm.c \ iopl.c \ diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h index 6184c2b9d..708bb4906 100644 --- a/libc/sysdeps/linux/common/bits/kernel-features.h +++ b/libc/sysdeps/linux/common/bits/kernel-features.h @@ -507,3 +507,8 @@ #if defined __x86_64__ && __LINUX_KERNEL_VERSION >= 0x030100 # define __ASSUME_GETCPU_SYSCALL 1 #endif + +/* getrandom syscall (widely) appeared around 4.0.0 */ +#if __LINUX_KERNEL_VERSION >= 0x040000 +# define __ASSUME_GETRANDOM_SYSCALL 1 +#endif diff --git a/libc/sysdeps/linux/common/getrandom.c b/libc/sysdeps/linux/common/getrandom.c new file mode 100644 index 000000000..d33d5224a --- /dev/null +++ b/libc/sysdeps/linux/common/getrandom.c @@ -0,0 +1,14 @@ +/* vi: set sw=4 ts=4: */ +/* + * getrandom() for uClibc + * + * Copyright (C) 2015 Bernhard Reutner-Fischer + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <sys/syscall.h> +#include <sys/random.h> +#ifdef __NR_getrandom +_syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags) +#endif diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c index 2c50307aa..19a33714a 100644 --- a/libc/sysdeps/linux/common/stubs.c +++ b/libc/sysdeps/linux/common/stubs.c @@ -157,6 +157,10 @@ make_stub(getpeername) make_stub(getpgrp) #endif +#if !defined __NR_getrandom && defined __UCLIBC_LINUX_SPECIFIC__ +make_stub(getrandom) +#endif + #if !defined __NR_getsockname && !defined __NR_socketcall && defined __UCLIBC_HAS_SOCKET__ make_stub(getsockname) #endif diff --git a/libc/sysdeps/linux/common/sys/random.h b/libc/sysdeps/linux/common/sys/random.h new file mode 100644 index 000000000..42f802576 --- /dev/null +++ b/libc/sysdeps/linux/common/sys/random.h @@ -0,0 +1,33 @@ +/* Copyright (C) 2015 Bernhard Reutner-Fischer + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +*/ + +#ifndef _SYS_RANDOM_H +#define _SYS_RANDOM_H 1 +#include <features.h> + +__BEGIN_DECLS + +#if defined __UCLIBC_LINUX_SPECIFIC__ && defined __USE_GNU +# if 0 /*def __ASSUME_GETRANDOM_SYSCALL */ +# include <linux/random.h> +# else +# undef GRND_NONBLOCK +# undef GRND_RANDOM +/* + * Flags for getrandom(2) + * + * GRND_NONBLOCK Don't block and return EAGAIN instead + * GRND_RANDOM Use the /dev/random pool instead of /dev/urandom + */ +# define GRND_NONBLOCK 0x0001 +# define GRND_RANDOM 0x0002 +# endif +/* FIXME: aren't there a couple of __restrict and const missing ? */ +extern int getrandom(void *__buf, size_t count, unsigned int flags) + __nonnull ((1)) __wur; +#endif + +__END_DECLS + +#endif /* sys/random.h */ |