Eric Anholt | 8c741ed | 2008-04-23 13:06:58 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright © 2008 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <stdlib.h> |
| 29 | #include <stdio.h> |
| 30 | #include <string.h> |
| 31 | #include <assert.h> |
| 32 | #include <fcntl.h> |
| 33 | #include <inttypes.h> |
| 34 | #include <errno.h> |
| 35 | #include <sys/stat.h> |
| 36 | #include "mmfs.h" |
| 37 | |
| 38 | #define MMFS_BUFFER_SIZE 16384 |
| 39 | |
| 40 | int do_read(int fd, int handle, void *buf, int offset, int size) |
| 41 | { |
| 42 | struct mmfs_pread_args read; |
| 43 | |
| 44 | /* Ensure that we don't have any convenient data in buf in case |
| 45 | * we fail. |
| 46 | */ |
| 47 | memset(buf, 0xd0, size); |
| 48 | |
| 49 | memset(&read, 0, sizeof(read)); |
| 50 | read.handle = handle; |
| 51 | read.data = buf; |
| 52 | read.size = size; |
| 53 | read.offset = offset; |
| 54 | |
| 55 | return ioctl(fd, MMFS_IOCTL_PREAD, &read); |
| 56 | } |
| 57 | |
| 58 | int do_write(int fd, int handle, void *buf, int offset, int size) |
| 59 | { |
| 60 | struct mmfs_pwrite_args write; |
| 61 | |
| 62 | memset(&write, 0, sizeof(write)); |
| 63 | write.handle = handle; |
| 64 | write.data = buf; |
| 65 | write.size = size; |
| 66 | write.offset = offset; |
| 67 | |
| 68 | return ioctl(fd, MMFS_IOCTL_PWRITE, &write); |
| 69 | } |
| 70 | |
| 71 | int main(int argc, char **argv) |
| 72 | { |
| 73 | int fd; |
| 74 | struct mmfs_alloc_args alloc; |
| 75 | uint8_t expected[MMFS_BUFFER_SIZE]; |
| 76 | uint8_t buf[MMFS_BUFFER_SIZE]; |
| 77 | int ret; |
| 78 | int handle; |
| 79 | |
| 80 | fd = open_mmfs_device(); |
| 81 | |
| 82 | memset(&alloc, 0, sizeof(alloc)); |
| 83 | alloc.size = MMFS_BUFFER_SIZE; |
| 84 | ret = ioctl(fd, MMFS_IOCTL_ALLOC, &alloc); |
| 85 | assert(ret == 0); |
| 86 | handle = alloc.handle; |
| 87 | |
| 88 | printf("Testing contents of newly allocated object.\n"); |
| 89 | ret = do_read(fd, handle, buf, 0, MMFS_BUFFER_SIZE); |
| 90 | assert(ret == 0); |
| 91 | memset(&expected, 0, sizeof(expected)); |
| 92 | assert(memcmp(expected, buf, sizeof(expected)) == 0); |
| 93 | |
| 94 | printf("Testing read beyond end of buffer.\n"); |
| 95 | ret = do_read(fd, handle, buf, MMFS_BUFFER_SIZE / 2, MMFS_BUFFER_SIZE); |
| 96 | assert(ret == -1 && errno == EINVAL); |
| 97 | |
| 98 | printf("Testing full write of buffer\n"); |
| 99 | memset(buf, 0, sizeof(buf)); |
| 100 | memset(buf + 1024, 0x01, 1024); |
| 101 | memset(expected + 1024, 0x01, 1024); |
| 102 | ret = do_write(fd, handle, buf, 0, MMFS_BUFFER_SIZE); |
| 103 | assert(ret == 0); |
| 104 | ret = do_read(fd, handle, buf, 0, MMFS_BUFFER_SIZE); |
| 105 | assert(ret == 0); |
| 106 | assert(memcmp(buf, expected, sizeof(buf)) == 0); |
| 107 | |
| 108 | printf("Testing partial write of buffer\n"); |
| 109 | memset(buf + 4096, 0x02, 1024); |
| 110 | memset(expected + 4096, 0x02, 1024); |
| 111 | ret = do_write(fd, handle, buf + 4096, 4096, 1024); |
| 112 | assert(ret == 0); |
| 113 | ret = do_read(fd, handle, buf, 0, MMFS_BUFFER_SIZE); |
| 114 | assert(ret == 0); |
| 115 | assert(memcmp(buf, expected, sizeof(buf)) == 0); |
| 116 | |
| 117 | printf("Testing partial read of buffer\n"); |
| 118 | ret = do_read(fd, handle, buf, 512, 1024); |
| 119 | assert(ret == 0); |
| 120 | assert(memcmp(buf, expected + 512, 1024) == 0); |
| 121 | |
| 122 | close(fd); |
| 123 | |
| 124 | return 0; |
| 125 | } |