diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/recipes-devtools/python/python/Don-t-use-getentropy-on-Linux.patch')
-rw-r--r-- | import-layers/yocto-poky/meta/recipes-devtools/python/python/Don-t-use-getentropy-on-Linux.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/recipes-devtools/python/python/Don-t-use-getentropy-on-Linux.patch b/import-layers/yocto-poky/meta/recipes-devtools/python/python/Don-t-use-getentropy-on-Linux.patch new file mode 100644 index 000000000..38e53778d --- /dev/null +++ b/import-layers/yocto-poky/meta/recipes-devtools/python/python/Don-t-use-getentropy-on-Linux.patch @@ -0,0 +1,41 @@ +Upstream-Status: Backport + +Signed-off-by: Andreas Oberritter <obi@opendreambox.org> + +From 905d1b30ac7cb0e31c57cec0533825c8f170b942 Mon Sep 17 00:00:00 2001 +From: Victor Stinner <victor.stinner@gmail.com> +Date: Mon, 9 Jan 2017 11:10:41 +0100 +Subject: [PATCH] Don't use getentropy() on Linux + +Issue #29188: Support glibc 2.24 on Linux: don't use getentropy() function but +read from /dev/urandom to get random bytes, for example in os.urandom(). On +Linux, getentropy() is implemented which getrandom() is blocking mode, whereas +os.urandom() should not block. + +(cherry picked from commit 2687486756721e39164fa9f597e468c35d495227) +--- + Python/random.c | 11 +++++++++-- + 1 file changed, 9 insertions(+), 2 deletions(-) + +diff --git a/Python/random.c b/Python/random.c +index b4bc1f3..f3f5d14 100644 +--- a/Python/random.c ++++ b/Python/random.c +@@ -94,8 +94,15 @@ win32_urandom(unsigned char *buffer, Py_ssize_t size, int raise) + } + + /* Issue #25003: Don't use getentropy() on Solaris (available since +- * Solaris 11.3), it is blocking whereas os.urandom() should not block. */ +-#elif defined(HAVE_GETENTROPY) && !defined(sun) ++ Solaris 11.3), it is blocking whereas os.urandom() should not block. ++ ++ Issue #29188: Don't use getentropy() on Linux since the glibc 2.24 ++ implements it with the getrandom() syscall which can fail with ENOSYS, ++ and this error is not supported in py_getentropy() and getrandom() is called ++ with flags=0 which blocks until system urandom is initialized, which is not ++ the desired behaviour to seed the Python hash secret nor for os.urandom(): ++ see the PEP 524 which was only implemented in Python 3.6. */ ++#elif defined(HAVE_GETENTROPY) && !defined(sun) && !defined(linux) + #define PY_GETENTROPY 1 + + /* Fill buffer with size pseudo-random bytes generated by getentropy(). |