normal	2017-01-12 07:38:50 +0900 (Thu, 12 Jan 2017)

  New Revision: 57307

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57307

  Log:
    random.c (fill_random_bytes_syscall): use "__NR_" prefix on Linux
    
    glibc still does not define the SYS_getrandom alias for
    __NR_getrandom in the Linux kernel.  However, installing
    up-to-date Linux kernel headers (linux-libc-dev >= 3.17 package
    on Debian) will get the __NR_getrandom syscall number defined
    properly without relying on glibc.
    
    This allows users with a modern kernel+headers to use the getrandom
    syscall without waiting on glibc support.

  Modified files:
    trunk/random.c
Index: random.c
===================================================================
--- random.c	(revision 57306)
+++ random.c	(revision 57307)
@@ -505,7 +505,7 @@ fill_random_bytes_syscall(void *seed, si https://github.com/ruby/ruby/blob/trunk/random.c#L505
     CryptGenRandom(prov, size, seed);
     return 0;
 }
-#elif defined __linux__ && defined SYS_getrandom
+#elif defined __linux__ && defined __NR_getrandom
 #include <linux/random.h>
 
 # ifndef GRND_NONBLOCK
@@ -522,7 +522,7 @@ fill_random_bytes_syscall(void *seed, si https://github.com/ruby/ruby/blob/trunk/random.c#L522
 	if (!need_secure)
 	    flags = GRND_NONBLOCK;
 	errno = 0;
-	ret = syscall(SYS_getrandom, seed, size, flags);
+	ret = syscall(__NR_getrandom, seed, size, flags);
 	if (errno == ENOSYS) {
 	    ATOMIC_SET(try_syscall, 0);
 	    return -1;

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