#include #include #include #include #include "rnd.h" #include "die.h" #include "ioexact.h" #include "ioops.h" static int fdw = -1; static void randombytes_weak(unsigned char *x, size_t xlen) { int ret; if (fdw == -1) { for (;;) { fdw = open(LOW_ENTROPY_SOURCE, O_RDONLY); if (fdw != -1) break; sleep(1); } } while (xlen > 0) { if (xlen < 1048576) ret = xlen; else ret = 1048576; ret = read(fdw, x, ret); if (ret < 1) { sleep(1); continue; } x += ret; xlen -= ret; } } static void randombytes_strong(unsigned char *x, size_t xlen) { int fds, ret; fds = open_or_die(HIG_ENTROPY_SOURCE, O_RDONLY); ret = read_exact(fds, x, xlen, 0); if (ret != (int) xlen) panic("Error reading from entropy source!\n"); close(fds); } int secrand(void) { int ret; randombytes_weak((void *) &ret, sizeof(ret)); return ret; } void gen_key_bytes(unsigned char *area, size_t len) { randombytes_strong(area, len); } 449e155a316f4ae3a530bbe18f'/> net-next plumbingsTobias Klauser
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authorLv Zheng <zetalog@gmail.com>2016-10-26 15:42:01 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-10-29 01:57:43 +0200
commit8633db6b027952449e155a316f4ae3a530bbe18f (patch)
tree4e190d0de7e971105a5d3960c3f56a4d1e32ec57
parent8121aa26e32012ca89afafa5e503b879950ac0fe (diff)
ACPICA: Dispatcher: Fix interpreter locking around acpi_ev_initialize_region()
In the code path of acpi_ev_initialize_region(), there is namespace modification code unlocked. This patch tunes the code to make sure such modification are always locked. Fixes: 74f51b80a0c4 (ACPICA: Namespace: Fix dynamic table loading issues) Tested-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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