forked from pool/libgcrypt
61eeda1b5c
Hopefully this fixes bsc#1131369. Hopefully. OBS-URL: https://build.opensuse.org/request/show/698242 OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libgcrypt?expand=0&rev=125
104 lines
3.4 KiB
Diff
104 lines
3.4 KiB
Diff
Index: libgcrypt-1.8.4/random/random-csprng.c
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===================================================================
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--- libgcrypt-1.8.4.orig/random/random-csprng.c
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+++ libgcrypt-1.8.4/random/random-csprng.c
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@@ -55,6 +55,10 @@
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#ifdef __MINGW32__
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#include <process.h>
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#endif
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+#if defined(__linux__) && defined(HAVE_SYSCALL)
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+# include <sys/syscall.h>
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+# include <linux/random.h>
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+#endif
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#include "g10lib.h"
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#include "random.h"
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#include "rand-internal.h"
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@@ -1116,6 +1120,22 @@ getfnc_gather_random (void))(void (*)(co
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enum random_origins, size_t, int);
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#if USE_RNDLINUX
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+#if defined(__linux__) && defined(HAVE_SYSCALL) && defined(__NR_getrandom)
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+ long ret;
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+ char buffer[1];
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+
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+ _gcry_pre_syscall ();
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+ ret = syscall (__NR_getrandom,
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+ (void*)buffer, (size_t)1, (unsigned int)GRND_NONBLOCK);
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+ _gcry_post_syscall ();
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+ if (ret != -1 || errno != ENOSYS)
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+ {
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+ fnc = _gcry_rndlinux_gather_random;
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+ return fnc;
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+ }
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+ else
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+ /* The syscall is not supported - fallback to /dev/urandom. */
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+#endif
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if ( !access (NAME_OF_DEV_RANDOM, R_OK)
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&& !access (NAME_OF_DEV_URANDOM, R_OK))
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{
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Index: libgcrypt-1.8.4/random/random.c
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===================================================================
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--- libgcrypt-1.8.4.orig/random/random.c
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+++ libgcrypt-1.8.4/random/random.c
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@@ -110,8 +110,8 @@ _gcry_random_read_conf (void)
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unsigned int result = 0;
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fp = fopen (fname, "r");
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- if (!fp)
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- return result;
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+ if (!fp) /* We make only_urandom the default. */
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+ return RANDOM_CONF_ONLY_URANDOM;
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for (;;)
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{
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Index: libgcrypt-1.8.4/random/rndlinux.c
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===================================================================
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--- libgcrypt-1.8.4.orig/random/rndlinux.c
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+++ libgcrypt-1.8.4/random/rndlinux.c
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@@ -34,6 +34,7 @@
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#include <fcntl.h>
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#if defined(__linux__) && defined(HAVE_SYSCALL)
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# include <sys/syscall.h>
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+# include <linux/random.h>
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#endif
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#include "types.h"
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@@ -248,6 +249,18 @@ _gcry_rndlinux_gather_random (void (*add
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{
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if (fd_urandom == -1)
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{
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+#if defined(__linux__) && defined(HAVE_SYSCALL) && defined(__NR_getrandom)
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+ long ret;
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+
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+ _gcry_pre_syscall ();
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+ ret = syscall (__NR_getrandom,
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+ (void*)buffer, (size_t)1, (unsigned int)GRND_NONBLOCK);
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+ _gcry_post_syscall ();
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+ if (ret > -1 || errno == EAGAIN || errno == EINTR)
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+ fd_urandom = -2;
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+ else
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+ /* The syscall is not supported - fallback to /dev/urandom. */
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+#endif
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fd_urandom = open_device (NAME_OF_DEV_URANDOM, (ever_opened & 2), 1);
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ever_opened |= 2;
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}
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@@ -275,6 +288,7 @@ _gcry_rndlinux_gather_random (void (*add
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* syscall and not a new device and thus we are not able to use
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* select(2) to have a timeout. */
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#if defined(__linux__) && defined(HAVE_SYSCALL) && defined(__NR_getrandom)
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+ if (fd == -2)
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{
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long ret;
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size_t nbytes;
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@@ -290,9 +304,7 @@ _gcry_rndlinux_gather_random (void (*add
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_gcry_post_syscall ();
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}
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while (ret == -1 && errno == EINTR);
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- if (ret == -1 && errno == ENOSYS)
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- ; /* The syscall is not supported - fallback to pulling from fd. */
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- else
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+ if (1)
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{ /* The syscall is supported. Some sanity checks. */
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if (ret == -1)
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log_fatal ("unexpected error from getrandom: %s\n",
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