diff options
author | RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
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committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/backends/rng-random.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/backends/rng-random.c')
-rw-r--r-- | qemu/backends/rng-random.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/qemu/backends/rng-random.c b/qemu/backends/rng-random.c deleted file mode 100644 index 2e44e2519..000000000 --- a/qemu/backends/rng-random.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * QEMU Random Number Generator Backend - * - * Copyright IBM, Corp. 2012 - * - * Authors: - * Anthony Liguori <aliguori@us.ibm.com> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - */ - -#include "qemu/osdep.h" -#include "sysemu/rng-random.h" -#include "sysemu/rng.h" -#include "qapi/error.h" -#include "qapi/qmp/qerror.h" -#include "qemu/main-loop.h" - -struct RndRandom -{ - RngBackend parent; - - int fd; - char *filename; -}; - -/** - * A simple and incomplete backend to request entropy from /dev/random. - * - * This backend exposes an additional "filename" property that can be used to - * set the filename to use to open the backend. - */ - -static void entropy_available(void *opaque) -{ - RndRandom *s = RNG_RANDOM(opaque); - - while (!QSIMPLEQ_EMPTY(&s->parent.requests)) { - RngRequest *req = QSIMPLEQ_FIRST(&s->parent.requests); - ssize_t len; - - len = read(s->fd, req->data, req->size); - if (len < 0 && errno == EAGAIN) { - return; - } - g_assert(len != -1); - - req->receive_entropy(req->opaque, req->data, len); - - rng_backend_finalize_request(&s->parent, req); - } - - /* We've drained all requests, the fd handler can be reset. */ - qemu_set_fd_handler(s->fd, NULL, NULL, NULL); -} - -static void rng_random_request_entropy(RngBackend *b, RngRequest *req) -{ - RndRandom *s = RNG_RANDOM(b); - - if (QSIMPLEQ_EMPTY(&s->parent.requests)) { - /* If there are no pending requests yet, we need to - * install our fd handler. */ - qemu_set_fd_handler(s->fd, entropy_available, NULL, s); - } -} - -static void rng_random_opened(RngBackend *b, Error **errp) -{ - RndRandom *s = RNG_RANDOM(b); - - if (s->filename == NULL) { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, - "filename", "a valid filename"); - } else { - s->fd = qemu_open(s->filename, O_RDONLY | O_NONBLOCK); - if (s->fd == -1) { - error_setg_file_open(errp, errno, s->filename); - } - } -} - -static char *rng_random_get_filename(Object *obj, Error **errp) -{ - RndRandom *s = RNG_RANDOM(obj); - - return g_strdup(s->filename); -} - -static void rng_random_set_filename(Object *obj, const char *filename, - Error **errp) -{ - RngBackend *b = RNG_BACKEND(obj); - RndRandom *s = RNG_RANDOM(obj); - - if (b->opened) { - error_setg(errp, QERR_PERMISSION_DENIED); - return; - } - - g_free(s->filename); - s->filename = g_strdup(filename); -} - -static void rng_random_init(Object *obj) -{ - RndRandom *s = RNG_RANDOM(obj); - - object_property_add_str(obj, "filename", - rng_random_get_filename, - rng_random_set_filename, - NULL); - - s->filename = g_strdup("/dev/random"); - s->fd = -1; -} - -static void rng_random_finalize(Object *obj) -{ - RndRandom *s = RNG_RANDOM(obj); - - if (s->fd != -1) { - qemu_set_fd_handler(s->fd, NULL, NULL, NULL); - qemu_close(s->fd); - } - - g_free(s->filename); -} - -static void rng_random_class_init(ObjectClass *klass, void *data) -{ - RngBackendClass *rbc = RNG_BACKEND_CLASS(klass); - - rbc->request_entropy = rng_random_request_entropy; - rbc->opened = rng_random_opened; -} - -static const TypeInfo rng_random_info = { - .name = TYPE_RNG_RANDOM, - .parent = TYPE_RNG_BACKEND, - .instance_size = sizeof(RndRandom), - .class_init = rng_random_class_init, - .instance_init = rng_random_init, - .instance_finalize = rng_random_finalize, -}; - -static void register_types(void) -{ - type_register_static(&rng_random_info); -} - -type_init(register_types); |