38 lines
917 B
C++
38 lines
917 B
C++
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#include "fs/devices/Random.h"
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#include "config.h"
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#include "rand/Mersenne.h"
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#include "render/TextRenderer.h"
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#include "std/stdio.h"
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#include "std/stdlib.h"
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#include "std/string.h"
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VFS::Node* RandomDevice::create_new(const char* devname)
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{
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VFS::Node* dev = new VFS::Node;
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dev->read_func = RandomDevice::read;
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dev->inode = 0;
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dev->length = 0;
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dev->type = VFS_DEVICE;
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dev->flags = 0;
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strncpy(dev->name, devname, sizeof(dev->name));
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return dev;
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}
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ssize_t RandomDevice::read(VFS::Node* node, size_t, size_t size, char* buffer)
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{
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if (!node) return -1;
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size_t nread = size;
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while (size >= sizeof(uint64_t))
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{
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*(uint64_t*)buffer = Mersenne::get();
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size -= sizeof(uint64_t);
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buffer += sizeof(uint64_t);
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}
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while (size)
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{
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*buffer = (char)(Mersenne::get() & 0xFF);
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size--;
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buffer++;
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}
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return (ssize_t)nread;
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}
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