root / block-raw-posix.c @ 298e01b6
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1 | 83f64091 | bellard | /*
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2 | 223d4670 | ths | * Block driver for RAW files (posix)
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3 | 5fafdf24 | ths | *
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4 | 83f64091 | bellard | * Copyright (c) 2006 Fabrice Bellard
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5 | 5fafdf24 | ths | *
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6 | 83f64091 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 83f64091 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 83f64091 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 83f64091 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 83f64091 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 83f64091 | bellard | * furnished to do so, subject to the following conditions:
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12 | 83f64091 | bellard | *
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13 | 83f64091 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 83f64091 | bellard | * all copies or substantial portions of the Software.
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15 | 83f64091 | bellard | *
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16 | 83f64091 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 83f64091 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 83f64091 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 83f64091 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 83f64091 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 83f64091 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 83f64091 | bellard | * THE SOFTWARE.
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23 | 83f64091 | bellard | */
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24 | faf07963 | pbrook | #include "qemu-common.h" |
25 | 87ecb68b | pbrook | #ifndef QEMU_IMG
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26 | 87ecb68b | pbrook | #include "qemu-timer.h" |
27 | ae5fc450 | pbrook | #include "exec-all.h" |
28 | faf07963 | pbrook | #endif
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29 | 83f64091 | bellard | #include "block_int.h" |
30 | 83f64091 | bellard | #include <assert.h> |
31 | 83f64091 | bellard | #include <aio.h> |
32 | 83f64091 | bellard | |
33 | 83f64091 | bellard | #ifdef CONFIG_COCOA
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34 | 83f64091 | bellard | #include <paths.h> |
35 | 83f64091 | bellard | #include <sys/param.h> |
36 | 83f64091 | bellard | #include <IOKit/IOKitLib.h> |
37 | 83f64091 | bellard | #include <IOKit/IOBSD.h> |
38 | 83f64091 | bellard | #include <IOKit/storage/IOMediaBSDClient.h> |
39 | 83f64091 | bellard | #include <IOKit/storage/IOMedia.h> |
40 | 83f64091 | bellard | #include <IOKit/storage/IOCDMedia.h> |
41 | 83f64091 | bellard | //#include <IOKit/storage/IOCDTypes.h>
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42 | 83f64091 | bellard | #include <CoreFoundation/CoreFoundation.h> |
43 | 83f64091 | bellard | #endif
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44 | 83f64091 | bellard | |
45 | 83f64091 | bellard | #ifdef __sun__
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46 | 2e9671da | ths | #define _POSIX_PTHREAD_SEMANTICS 1 |
47 | 2e9671da | ths | #include <signal.h> |
48 | 83f64091 | bellard | #include <sys/dkio.h> |
49 | 83f64091 | bellard | #endif
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50 | 19cb3738 | bellard | #ifdef __linux__
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51 | 19cb3738 | bellard | #include <sys/ioctl.h> |
52 | 19cb3738 | bellard | #include <linux/cdrom.h> |
53 | 19cb3738 | bellard | #include <linux/fd.h> |
54 | 19cb3738 | bellard | #endif
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55 | 1cb6c3fd | ths | #ifdef __FreeBSD__
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56 | 1cb6c3fd | ths | #include <sys/disk.h> |
57 | 1cb6c3fd | ths | #endif
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58 | 83f64091 | bellard | |
59 | 19cb3738 | bellard | //#define DEBUG_FLOPPY
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60 | 83f64091 | bellard | |
61 | faf07963 | pbrook | //#define DEBUG_BLOCK
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62 | faf07963 | pbrook | #if defined(DEBUG_BLOCK) && !defined(QEMU_IMG)
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63 | a50a6282 | balrog | #define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \ |
64 | 2e03286b | balrog | { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0) |
65 | 8c05dbf9 | ths | #else
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66 | 8c05dbf9 | ths | #define DEBUG_BLOCK_PRINT(formatCstr, args...)
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67 | 8c05dbf9 | ths | #endif
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68 | 8c05dbf9 | ths | |
69 | 19cb3738 | bellard | #define FTYPE_FILE 0 |
70 | 19cb3738 | bellard | #define FTYPE_CD 1 |
71 | 19cb3738 | bellard | #define FTYPE_FD 2 |
72 | 83f64091 | bellard | |
73 | 19cb3738 | bellard | /* if the FD is not accessed during that time (in ms), we try to
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74 | 19cb3738 | bellard | reopen it to see if the disk has been changed */
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75 | 19cb3738 | bellard | #define FD_OPEN_TIMEOUT 1000 |
76 | 83f64091 | bellard | |
77 | 19cb3738 | bellard | typedef struct BDRVRawState { |
78 | 19cb3738 | bellard | int fd;
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79 | 19cb3738 | bellard | int type;
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80 | 8c05dbf9 | ths | unsigned int lseek_err_cnt; |
81 | 19cb3738 | bellard | #if defined(__linux__)
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82 | 19cb3738 | bellard | /* linux floppy specific */
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83 | 19cb3738 | bellard | int fd_open_flags;
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84 | 19cb3738 | bellard | int64_t fd_open_time; |
85 | 19cb3738 | bellard | int64_t fd_error_time; |
86 | 19cb3738 | bellard | int fd_got_error;
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87 | 19cb3738 | bellard | int fd_media_changed;
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88 | 83f64091 | bellard | #endif
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89 | 19cb3738 | bellard | } BDRVRawState; |
90 | 19cb3738 | bellard | |
91 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs); |
92 | 83f64091 | bellard | |
93 | 83f64091 | bellard | static int raw_open(BlockDriverState *bs, const char *filename, int flags) |
94 | 83f64091 | bellard | { |
95 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
96 | 19cb3738 | bellard | int fd, open_flags, ret;
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97 | 83f64091 | bellard | |
98 | 8c05dbf9 | ths | s->lseek_err_cnt = 0;
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99 | 8c05dbf9 | ths | |
100 | 83f64091 | bellard | open_flags = O_BINARY; |
101 | 83f64091 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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102 | 83f64091 | bellard | open_flags |= O_RDWR; |
103 | 83f64091 | bellard | } else {
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104 | 83f64091 | bellard | open_flags |= O_RDONLY; |
105 | 83f64091 | bellard | bs->read_only = 1;
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106 | 83f64091 | bellard | } |
107 | 83f64091 | bellard | if (flags & BDRV_O_CREAT)
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108 | 83f64091 | bellard | open_flags |= O_CREAT | O_TRUNC; |
109 | 33f00271 | balrog | #ifdef O_DIRECT
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110 | 33f00271 | balrog | if (flags & BDRV_O_DIRECT)
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111 | 33f00271 | balrog | open_flags |= O_DIRECT; |
112 | 33f00271 | balrog | #endif
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113 | 83f64091 | bellard | |
114 | 19cb3738 | bellard | s->type = FTYPE_FILE; |
115 | 19cb3738 | bellard | |
116 | 83f64091 | bellard | fd = open(filename, open_flags, 0644);
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117 | 19cb3738 | bellard | if (fd < 0) { |
118 | 19cb3738 | bellard | ret = -errno; |
119 | 19cb3738 | bellard | if (ret == -EROFS)
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120 | 19cb3738 | bellard | ret = -EACCES; |
121 | 19cb3738 | bellard | return ret;
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122 | 19cb3738 | bellard | } |
123 | 83f64091 | bellard | s->fd = fd; |
124 | 83f64091 | bellard | return 0; |
125 | 83f64091 | bellard | } |
126 | 83f64091 | bellard | |
127 | 83f64091 | bellard | /* XXX: use host sector size if necessary with:
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128 | 83f64091 | bellard | #ifdef DIOCGSECTORSIZE
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129 | 83f64091 | bellard | {
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130 | 83f64091 | bellard | unsigned int sectorsize = 512;
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131 | 83f64091 | bellard | if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
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132 | 83f64091 | bellard | sectorsize > bufsize)
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133 | 83f64091 | bellard | bufsize = sectorsize;
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134 | 83f64091 | bellard | }
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135 | 83f64091 | bellard | #endif
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136 | 83f64091 | bellard | #ifdef CONFIG_COCOA
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137 | 83f64091 | bellard | u_int32_t blockSize = 512;
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138 | 83f64091 | bellard | if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize > bufsize) {
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139 | 83f64091 | bellard | bufsize = blockSize;
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140 | 83f64091 | bellard | }
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141 | 83f64091 | bellard | #endif
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142 | 83f64091 | bellard | */
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143 | 83f64091 | bellard | |
144 | 5fafdf24 | ths | static int raw_pread(BlockDriverState *bs, int64_t offset, |
145 | 83f64091 | bellard | uint8_t *buf, int count)
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146 | 83f64091 | bellard | { |
147 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
148 | 83f64091 | bellard | int ret;
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149 | 3b46e624 | ths | |
150 | 19cb3738 | bellard | ret = fd_open(bs); |
151 | 19cb3738 | bellard | if (ret < 0) |
152 | 19cb3738 | bellard | return ret;
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153 | 19cb3738 | bellard | |
154 | 985a03b0 | ths | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
155 | 8c05dbf9 | ths | ++(s->lseek_err_cnt); |
156 | 8c05dbf9 | ths | if(s->lseek_err_cnt <= 10) { |
157 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
158 | 92868412 | j_mayer | "] lseek failed : %d = %s\n",
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159 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
160 | 8c05dbf9 | ths | bs->total_sectors, errno, strerror(errno)); |
161 | 8c05dbf9 | ths | } |
162 | 8c05dbf9 | ths | return -1; |
163 | 8c05dbf9 | ths | } |
164 | 8c05dbf9 | ths | s->lseek_err_cnt=0;
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165 | 8c05dbf9 | ths | |
166 | 83f64091 | bellard | ret = read(s->fd, buf, count); |
167 | 8c05dbf9 | ths | if (ret == count)
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168 | 8c05dbf9 | ths | goto label__raw_read__success;
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169 | 8c05dbf9 | ths | |
170 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
171 | 92868412 | j_mayer | "] read failed %d : %d = %s\n",
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172 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
173 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
174 | 8c05dbf9 | ths | |
175 | 8c05dbf9 | ths | /* Try harder for CDrom. */
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176 | 8c05dbf9 | ths | if (bs->type == BDRV_TYPE_CDROM) {
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177 | 8c05dbf9 | ths | lseek(s->fd, offset, SEEK_SET); |
178 | 8c05dbf9 | ths | ret = read(s->fd, buf, count); |
179 | 8c05dbf9 | ths | if (ret == count)
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180 | 8c05dbf9 | ths | goto label__raw_read__success;
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181 | 8c05dbf9 | ths | lseek(s->fd, offset, SEEK_SET); |
182 | 8c05dbf9 | ths | ret = read(s->fd, buf, count); |
183 | 8c05dbf9 | ths | if (ret == count)
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184 | 8c05dbf9 | ths | goto label__raw_read__success;
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185 | 8c05dbf9 | ths | |
186 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
187 | 92868412 | j_mayer | "] retry read failed %d : %d = %s\n",
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188 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
189 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
190 | 8c05dbf9 | ths | } |
191 | 8c05dbf9 | ths | |
192 | 8c05dbf9 | ths | label__raw_read__success:
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193 | 8c05dbf9 | ths | |
194 | 83f64091 | bellard | return ret;
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195 | 83f64091 | bellard | } |
196 | 83f64091 | bellard | |
197 | 5fafdf24 | ths | static int raw_pwrite(BlockDriverState *bs, int64_t offset, |
198 | 83f64091 | bellard | const uint8_t *buf, int count) |
199 | 83f64091 | bellard | { |
200 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
201 | 83f64091 | bellard | int ret;
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202 | 3b46e624 | ths | |
203 | 19cb3738 | bellard | ret = fd_open(bs); |
204 | 19cb3738 | bellard | if (ret < 0) |
205 | 19cb3738 | bellard | return ret;
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206 | 19cb3738 | bellard | |
207 | 985a03b0 | ths | if (offset >= 0 && lseek(s->fd, offset, SEEK_SET) == (off_t)-1) { |
208 | 8c05dbf9 | ths | ++(s->lseek_err_cnt); |
209 | 8c05dbf9 | ths | if(s->lseek_err_cnt) {
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210 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" |
211 | 92868412 | j_mayer | PRId64 "] lseek failed : %d = %s\n",
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212 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
213 | 8c05dbf9 | ths | bs->total_sectors, errno, strerror(errno)); |
214 | 8c05dbf9 | ths | } |
215 | 8c05dbf9 | ths | return -1; |
216 | 8c05dbf9 | ths | } |
217 | 8c05dbf9 | ths | s->lseek_err_cnt = 0;
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218 | 8c05dbf9 | ths | |
219 | 83f64091 | bellard | ret = write(s->fd, buf, count); |
220 | 8c05dbf9 | ths | if (ret == count)
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221 | 8c05dbf9 | ths | goto label__raw_write__success;
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222 | 8c05dbf9 | ths | |
223 | 92868412 | j_mayer | DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64 |
224 | 92868412 | j_mayer | "] write failed %d : %d = %s\n",
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225 | 8c05dbf9 | ths | s->fd, bs->filename, offset, buf, count, |
226 | 8c05dbf9 | ths | bs->total_sectors, ret, errno, strerror(errno)); |
227 | 8c05dbf9 | ths | |
228 | 8c05dbf9 | ths | label__raw_write__success:
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229 | 8c05dbf9 | ths | |
230 | 83f64091 | bellard | return ret;
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231 | 83f64091 | bellard | } |
232 | 83f64091 | bellard | |
233 | 83f64091 | bellard | /***********************************************************/
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234 | 19cb3738 | bellard | /* Unix AIO using POSIX AIO */
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235 | 83f64091 | bellard | |
236 | 83f64091 | bellard | typedef struct RawAIOCB { |
237 | ce1a14dc | pbrook | BlockDriverAIOCB common; |
238 | 83f64091 | bellard | struct aiocb aiocb;
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239 | ce1a14dc | pbrook | struct RawAIOCB *next;
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240 | 83f64091 | bellard | } RawAIOCB; |
241 | 83f64091 | bellard | |
242 | 83f64091 | bellard | static int aio_sig_num = SIGUSR2; |
243 | ce1a14dc | pbrook | static RawAIOCB *first_aio; /* AIO issued */ |
244 | 979b67ad | bellard | static int aio_initialized = 0; |
245 | 83f64091 | bellard | |
246 | 83f64091 | bellard | static void aio_signal_handler(int signum) |
247 | 83f64091 | bellard | { |
248 | faf07963 | pbrook | #ifndef QEMU_IMG
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249 | 83f64091 | bellard | CPUState *env = cpu_single_env; |
250 | 83f64091 | bellard | if (env) {
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251 | 83f64091 | bellard | /* stop the currently executing cpu because a timer occured */
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252 | 83f64091 | bellard | cpu_interrupt(env, CPU_INTERRUPT_EXIT); |
253 | 83f64091 | bellard | #ifdef USE_KQEMU
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254 | 83f64091 | bellard | if (env->kqemu_enabled) {
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255 | 83f64091 | bellard | kqemu_cpu_interrupt(env); |
256 | 83f64091 | bellard | } |
257 | 83f64091 | bellard | #endif
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258 | 83f64091 | bellard | } |
259 | 979b67ad | bellard | #endif
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260 | 83f64091 | bellard | } |
261 | 83f64091 | bellard | |
262 | 83f64091 | bellard | void qemu_aio_init(void) |
263 | 83f64091 | bellard | { |
264 | 83f64091 | bellard | struct sigaction act;
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265 | 979b67ad | bellard | |
266 | 979b67ad | bellard | aio_initialized = 1;
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267 | 3b46e624 | ths | |
268 | 83f64091 | bellard | sigfillset(&act.sa_mask); |
269 | 83f64091 | bellard | act.sa_flags = 0; /* do not restart syscalls to interrupt select() */ |
270 | 83f64091 | bellard | act.sa_handler = aio_signal_handler; |
271 | 83f64091 | bellard | sigaction(aio_sig_num, &act, NULL);
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272 | 83f64091 | bellard | |
273 | 19cb3738 | bellard | #if defined(__GLIBC__) && defined(__linux__)
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274 | 83f64091 | bellard | { |
275 | 19cb3738 | bellard | /* XXX: aio thread exit seems to hang on RedHat 9 and this init
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276 | 19cb3738 | bellard | seems to fix the problem. */
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277 | 83f64091 | bellard | struct aioinit ai;
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278 | 83f64091 | bellard | memset(&ai, 0, sizeof(ai)); |
279 | 01534fe9 | bellard | ai.aio_threads = 1;
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280 | 01534fe9 | bellard | ai.aio_num = 1;
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281 | 83f64091 | bellard | ai.aio_idle_time = 365 * 100000; |
282 | 83f64091 | bellard | aio_init(&ai); |
283 | 83f64091 | bellard | } |
284 | 19cb3738 | bellard | #endif
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285 | 83f64091 | bellard | } |
286 | 83f64091 | bellard | |
287 | 83f64091 | bellard | void qemu_aio_poll(void) |
288 | 83f64091 | bellard | { |
289 | ce1a14dc | pbrook | RawAIOCB *acb, **pacb; |
290 | 83f64091 | bellard | int ret;
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291 | 83f64091 | bellard | |
292 | 83f64091 | bellard | for(;;) {
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293 | 83f64091 | bellard | pacb = &first_aio; |
294 | 83f64091 | bellard | for(;;) {
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295 | 83f64091 | bellard | acb = *pacb; |
296 | 83f64091 | bellard | if (!acb)
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297 | 83f64091 | bellard | goto the_end;
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298 | ce1a14dc | pbrook | ret = aio_error(&acb->aiocb); |
299 | 83f64091 | bellard | if (ret == ECANCELED) {
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300 | 83f64091 | bellard | /* remove the request */
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301 | ce1a14dc | pbrook | *pacb = acb->next; |
302 | ce1a14dc | pbrook | qemu_aio_release(acb); |
303 | 83f64091 | bellard | } else if (ret != EINPROGRESS) { |
304 | 83f64091 | bellard | /* end of aio */
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305 | 83f64091 | bellard | if (ret == 0) { |
306 | ce1a14dc | pbrook | ret = aio_return(&acb->aiocb); |
307 | ce1a14dc | pbrook | if (ret == acb->aiocb.aio_nbytes)
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308 | 83f64091 | bellard | ret = 0;
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309 | 83f64091 | bellard | else
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310 | 19cb3738 | bellard | ret = -EINVAL; |
311 | 83f64091 | bellard | } else {
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312 | 83f64091 | bellard | ret = -ret; |
313 | 83f64091 | bellard | } |
314 | 83f64091 | bellard | /* remove the request */
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315 | ce1a14dc | pbrook | *pacb = acb->next; |
316 | 83f64091 | bellard | /* call the callback */
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317 | ce1a14dc | pbrook | acb->common.cb(acb->common.opaque, ret); |
318 | ce1a14dc | pbrook | qemu_aio_release(acb); |
319 | 83f64091 | bellard | break;
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320 | 83f64091 | bellard | } else {
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321 | ce1a14dc | pbrook | pacb = &acb->next; |
322 | 83f64091 | bellard | } |
323 | 83f64091 | bellard | } |
324 | 83f64091 | bellard | } |
325 | 83f64091 | bellard | the_end: ;
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326 | 83f64091 | bellard | } |
327 | 83f64091 | bellard | |
328 | 6192bc37 | pbrook | /* Wait for all IO requests to complete. */
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329 | 6192bc37 | pbrook | void qemu_aio_flush(void) |
330 | 6192bc37 | pbrook | { |
331 | 6192bc37 | pbrook | qemu_aio_wait_start(); |
332 | 6192bc37 | pbrook | qemu_aio_poll(); |
333 | 6192bc37 | pbrook | while (first_aio) {
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334 | 6192bc37 | pbrook | qemu_aio_wait(); |
335 | 6192bc37 | pbrook | } |
336 | 6192bc37 | pbrook | qemu_aio_wait_end(); |
337 | 6192bc37 | pbrook | } |
338 | 6192bc37 | pbrook | |
339 | 83f64091 | bellard | /* wait until at least one AIO was handled */
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340 | 83f64091 | bellard | static sigset_t wait_oset;
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341 | 83f64091 | bellard | |
342 | 83f64091 | bellard | void qemu_aio_wait_start(void) |
343 | 83f64091 | bellard | { |
344 | 83f64091 | bellard | sigset_t set; |
345 | 979b67ad | bellard | |
346 | 979b67ad | bellard | if (!aio_initialized)
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347 | 979b67ad | bellard | qemu_aio_init(); |
348 | 83f64091 | bellard | sigemptyset(&set); |
349 | 83f64091 | bellard | sigaddset(&set, aio_sig_num); |
350 | 83f64091 | bellard | sigprocmask(SIG_BLOCK, &set, &wait_oset); |
351 | 83f64091 | bellard | } |
352 | 83f64091 | bellard | |
353 | 83f64091 | bellard | void qemu_aio_wait(void) |
354 | 83f64091 | bellard | { |
355 | 83f64091 | bellard | sigset_t set; |
356 | 83f64091 | bellard | int nb_sigs;
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357 | 6eb5733a | bellard | |
358 | faf07963 | pbrook | #ifndef QEMU_IMG
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359 | 6eb5733a | bellard | if (qemu_bh_poll())
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360 | 6eb5733a | bellard | return;
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361 | 6eb5733a | bellard | #endif
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362 | 83f64091 | bellard | sigemptyset(&set); |
363 | 83f64091 | bellard | sigaddset(&set, aio_sig_num); |
364 | 83f64091 | bellard | sigwait(&set, &nb_sigs); |
365 | 83f64091 | bellard | qemu_aio_poll(); |
366 | 83f64091 | bellard | } |
367 | 83f64091 | bellard | |
368 | 83f64091 | bellard | void qemu_aio_wait_end(void) |
369 | 83f64091 | bellard | { |
370 | 83f64091 | bellard | sigprocmask(SIG_SETMASK, &wait_oset, NULL);
|
371 | 83f64091 | bellard | } |
372 | 83f64091 | bellard | |
373 | ce1a14dc | pbrook | static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
|
374 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
375 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
376 | 83f64091 | bellard | { |
377 | ce1a14dc | pbrook | BDRVRawState *s = bs->opaque; |
378 | ce1a14dc | pbrook | RawAIOCB *acb; |
379 | ce1a14dc | pbrook | |
380 | 19cb3738 | bellard | if (fd_open(bs) < 0) |
381 | 19cb3738 | bellard | return NULL; |
382 | 19cb3738 | bellard | |
383 | ce1a14dc | pbrook | acb = qemu_aio_get(bs, cb, opaque); |
384 | ce1a14dc | pbrook | if (!acb)
|
385 | ce1a14dc | pbrook | return NULL; |
386 | ce1a14dc | pbrook | acb->aiocb.aio_fildes = s->fd; |
387 | ce1a14dc | pbrook | acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num; |
388 | ce1a14dc | pbrook | acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
389 | ce1a14dc | pbrook | acb->aiocb.aio_buf = buf; |
390 | 985a03b0 | ths | if (nb_sectors < 0) |
391 | 985a03b0 | ths | acb->aiocb.aio_nbytes = -nb_sectors; |
392 | 985a03b0 | ths | else
|
393 | 985a03b0 | ths | acb->aiocb.aio_nbytes = nb_sectors * 512;
|
394 | ce1a14dc | pbrook | acb->aiocb.aio_offset = sector_num * 512;
|
395 | ce1a14dc | pbrook | acb->next = first_aio; |
396 | ce1a14dc | pbrook | first_aio = acb; |
397 | ce1a14dc | pbrook | return acb;
|
398 | 83f64091 | bellard | } |
399 | 83f64091 | bellard | |
400 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
|
401 | ce1a14dc | pbrook | int64_t sector_num, uint8_t *buf, int nb_sectors,
|
402 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
403 | 83f64091 | bellard | { |
404 | ce1a14dc | pbrook | RawAIOCB *acb; |
405 | 83f64091 | bellard | |
406 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); |
407 | ce1a14dc | pbrook | if (!acb)
|
408 | ce1a14dc | pbrook | return NULL; |
409 | ce1a14dc | pbrook | if (aio_read(&acb->aiocb) < 0) { |
410 | ce1a14dc | pbrook | qemu_aio_release(acb); |
411 | ce1a14dc | pbrook | return NULL; |
412 | 5fafdf24 | ths | } |
413 | ce1a14dc | pbrook | return &acb->common;
|
414 | 83f64091 | bellard | } |
415 | 83f64091 | bellard | |
416 | ce1a14dc | pbrook | static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
|
417 | ce1a14dc | pbrook | int64_t sector_num, const uint8_t *buf, int nb_sectors, |
418 | ce1a14dc | pbrook | BlockDriverCompletionFunc *cb, void *opaque)
|
419 | 83f64091 | bellard | { |
420 | ce1a14dc | pbrook | RawAIOCB *acb; |
421 | 83f64091 | bellard | |
422 | ce1a14dc | pbrook | acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque); |
423 | ce1a14dc | pbrook | if (!acb)
|
424 | ce1a14dc | pbrook | return NULL; |
425 | ce1a14dc | pbrook | if (aio_write(&acb->aiocb) < 0) { |
426 | ce1a14dc | pbrook | qemu_aio_release(acb); |
427 | ce1a14dc | pbrook | return NULL; |
428 | 5fafdf24 | ths | } |
429 | ce1a14dc | pbrook | return &acb->common;
|
430 | 83f64091 | bellard | } |
431 | 83f64091 | bellard | |
432 | ce1a14dc | pbrook | static void raw_aio_cancel(BlockDriverAIOCB *blockacb) |
433 | 83f64091 | bellard | { |
434 | 83f64091 | bellard | int ret;
|
435 | ce1a14dc | pbrook | RawAIOCB *acb = (RawAIOCB *)blockacb; |
436 | ce1a14dc | pbrook | RawAIOCB **pacb; |
437 | 83f64091 | bellard | |
438 | ce1a14dc | pbrook | ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb); |
439 | 83f64091 | bellard | if (ret == AIO_NOTCANCELED) {
|
440 | 83f64091 | bellard | /* fail safe: if the aio could not be canceled, we wait for
|
441 | 83f64091 | bellard | it */
|
442 | ce1a14dc | pbrook | while (aio_error(&acb->aiocb) == EINPROGRESS);
|
443 | 83f64091 | bellard | } |
444 | 83f64091 | bellard | |
445 | 83f64091 | bellard | /* remove the callback from the queue */
|
446 | 83f64091 | bellard | pacb = &first_aio; |
447 | 83f64091 | bellard | for(;;) {
|
448 | 83f64091 | bellard | if (*pacb == NULL) { |
449 | 83f64091 | bellard | break;
|
450 | 83f64091 | bellard | } else if (*pacb == acb) { |
451 | ce1a14dc | pbrook | *pacb = acb->next; |
452 | ce1a14dc | pbrook | qemu_aio_release(acb); |
453 | 83f64091 | bellard | break;
|
454 | 83f64091 | bellard | } |
455 | ce1a14dc | pbrook | pacb = &acb->next; |
456 | 83f64091 | bellard | } |
457 | 83f64091 | bellard | } |
458 | 83f64091 | bellard | |
459 | 83f64091 | bellard | static void raw_close(BlockDriverState *bs) |
460 | 83f64091 | bellard | { |
461 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
462 | 19cb3738 | bellard | if (s->fd >= 0) { |
463 | 19cb3738 | bellard | close(s->fd); |
464 | 19cb3738 | bellard | s->fd = -1;
|
465 | 19cb3738 | bellard | } |
466 | 83f64091 | bellard | } |
467 | 83f64091 | bellard | |
468 | 83f64091 | bellard | static int raw_truncate(BlockDriverState *bs, int64_t offset) |
469 | 83f64091 | bellard | { |
470 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
471 | 19cb3738 | bellard | if (s->type != FTYPE_FILE)
|
472 | 19cb3738 | bellard | return -ENOTSUP;
|
473 | 83f64091 | bellard | if (ftruncate(s->fd, offset) < 0) |
474 | 83f64091 | bellard | return -errno;
|
475 | 83f64091 | bellard | return 0; |
476 | 83f64091 | bellard | } |
477 | 83f64091 | bellard | |
478 | 83f64091 | bellard | static int64_t raw_getlength(BlockDriverState *bs)
|
479 | 83f64091 | bellard | { |
480 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
481 | 83f64091 | bellard | int fd = s->fd;
|
482 | 83f64091 | bellard | int64_t size; |
483 | 83f64091 | bellard | #ifdef _BSD
|
484 | 83f64091 | bellard | struct stat sb;
|
485 | 83f64091 | bellard | #endif
|
486 | 83f64091 | bellard | #ifdef __sun__
|
487 | 83f64091 | bellard | struct dk_minfo minfo;
|
488 | 83f64091 | bellard | int rv;
|
489 | 83f64091 | bellard | #endif
|
490 | 19cb3738 | bellard | int ret;
|
491 | 19cb3738 | bellard | |
492 | 19cb3738 | bellard | ret = fd_open(bs); |
493 | 19cb3738 | bellard | if (ret < 0) |
494 | 19cb3738 | bellard | return ret;
|
495 | 83f64091 | bellard | |
496 | 83f64091 | bellard | #ifdef _BSD
|
497 | 83f64091 | bellard | if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
|
498 | 83f64091 | bellard | #ifdef DIOCGMEDIASIZE
|
499 | 83f64091 | bellard | if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
|
500 | 83f64091 | bellard | #endif
|
501 | 83f64091 | bellard | #ifdef CONFIG_COCOA
|
502 | 83f64091 | bellard | size = LONG_LONG_MAX; |
503 | 83f64091 | bellard | #else
|
504 | 83f64091 | bellard | size = lseek(fd, 0LL, SEEK_END);
|
505 | 83f64091 | bellard | #endif
|
506 | 83f64091 | bellard | } else
|
507 | 83f64091 | bellard | #endif
|
508 | 83f64091 | bellard | #ifdef __sun__
|
509 | 83f64091 | bellard | /*
|
510 | 83f64091 | bellard | * use the DKIOCGMEDIAINFO ioctl to read the size.
|
511 | 83f64091 | bellard | */
|
512 | 83f64091 | bellard | rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo ); |
513 | 83f64091 | bellard | if ( rv != -1 ) { |
514 | 83f64091 | bellard | size = minfo.dki_lbsize * minfo.dki_capacity; |
515 | 83f64091 | bellard | } else /* there are reports that lseek on some devices |
516 | 83f64091 | bellard | fails, but irc discussion said that contingency
|
517 | 83f64091 | bellard | on contingency was overkill */
|
518 | 83f64091 | bellard | #endif
|
519 | 83f64091 | bellard | { |
520 | 83f64091 | bellard | size = lseek(fd, 0, SEEK_END);
|
521 | 83f64091 | bellard | } |
522 | 83f64091 | bellard | return size;
|
523 | 83f64091 | bellard | } |
524 | 83f64091 | bellard | |
525 | 83f64091 | bellard | static int raw_create(const char *filename, int64_t total_size, |
526 | 83f64091 | bellard | const char *backing_file, int flags) |
527 | 83f64091 | bellard | { |
528 | 83f64091 | bellard | int fd;
|
529 | 83f64091 | bellard | |
530 | 83f64091 | bellard | if (flags || backing_file)
|
531 | 83f64091 | bellard | return -ENOTSUP;
|
532 | 83f64091 | bellard | |
533 | 5fafdf24 | ths | fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
534 | 83f64091 | bellard | 0644);
|
535 | 83f64091 | bellard | if (fd < 0) |
536 | 83f64091 | bellard | return -EIO;
|
537 | 83f64091 | bellard | ftruncate(fd, total_size * 512);
|
538 | 83f64091 | bellard | close(fd); |
539 | 83f64091 | bellard | return 0; |
540 | 83f64091 | bellard | } |
541 | 83f64091 | bellard | |
542 | 83f64091 | bellard | static void raw_flush(BlockDriverState *bs) |
543 | 83f64091 | bellard | { |
544 | 83f64091 | bellard | BDRVRawState *s = bs->opaque; |
545 | 83f64091 | bellard | fsync(s->fd); |
546 | 83f64091 | bellard | } |
547 | 83f64091 | bellard | |
548 | 83f64091 | bellard | BlockDriver bdrv_raw = { |
549 | 83f64091 | bellard | "raw",
|
550 | 83f64091 | bellard | sizeof(BDRVRawState),
|
551 | 83f64091 | bellard | NULL, /* no probe for protocols */ |
552 | 83f64091 | bellard | raw_open, |
553 | 83f64091 | bellard | NULL,
|
554 | 83f64091 | bellard | NULL,
|
555 | 83f64091 | bellard | raw_close, |
556 | 83f64091 | bellard | raw_create, |
557 | 83f64091 | bellard | raw_flush, |
558 | 3b46e624 | ths | |
559 | 83f64091 | bellard | .bdrv_aio_read = raw_aio_read, |
560 | 83f64091 | bellard | .bdrv_aio_write = raw_aio_write, |
561 | 83f64091 | bellard | .bdrv_aio_cancel = raw_aio_cancel, |
562 | ce1a14dc | pbrook | .aiocb_size = sizeof(RawAIOCB),
|
563 | 83f64091 | bellard | .protocol_name = "file",
|
564 | 83f64091 | bellard | .bdrv_pread = raw_pread, |
565 | 83f64091 | bellard | .bdrv_pwrite = raw_pwrite, |
566 | 83f64091 | bellard | .bdrv_truncate = raw_truncate, |
567 | 83f64091 | bellard | .bdrv_getlength = raw_getlength, |
568 | 83f64091 | bellard | }; |
569 | 83f64091 | bellard | |
570 | 19cb3738 | bellard | /***********************************************/
|
571 | 19cb3738 | bellard | /* host device */
|
572 | 19cb3738 | bellard | |
573 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
574 | 19cb3738 | bellard | static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
|
575 | 19cb3738 | bellard | static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize ); |
576 | 19cb3738 | bellard | |
577 | 19cb3738 | bellard | kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator ) |
578 | 19cb3738 | bellard | { |
579 | 5fafdf24 | ths | kern_return_t kernResult; |
580 | 19cb3738 | bellard | mach_port_t masterPort; |
581 | 19cb3738 | bellard | CFMutableDictionaryRef classesToMatch; |
582 | 19cb3738 | bellard | |
583 | 19cb3738 | bellard | kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort ); |
584 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult ) {
|
585 | 19cb3738 | bellard | printf( "IOMasterPort returned %d\n", kernResult );
|
586 | 19cb3738 | bellard | } |
587 | 3b46e624 | ths | |
588 | 5fafdf24 | ths | classesToMatch = IOServiceMatching( kIOCDMediaClass ); |
589 | 19cb3738 | bellard | if ( classesToMatch == NULL ) { |
590 | 19cb3738 | bellard | printf( "IOServiceMatching returned a NULL dictionary.\n" );
|
591 | 19cb3738 | bellard | } else {
|
592 | 19cb3738 | bellard | CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ), kCFBooleanTrue ); |
593 | 19cb3738 | bellard | } |
594 | 19cb3738 | bellard | kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, mediaIterator ); |
595 | 19cb3738 | bellard | if ( KERN_SUCCESS != kernResult )
|
596 | 19cb3738 | bellard | { |
597 | 19cb3738 | bellard | printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
|
598 | 19cb3738 | bellard | } |
599 | 3b46e624 | ths | |
600 | 19cb3738 | bellard | return kernResult;
|
601 | 19cb3738 | bellard | } |
602 | 19cb3738 | bellard | |
603 | 19cb3738 | bellard | kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex maxPathSize )
|
604 | 19cb3738 | bellard | { |
605 | 19cb3738 | bellard | io_object_t nextMedia; |
606 | 19cb3738 | bellard | kern_return_t kernResult = KERN_FAILURE; |
607 | 19cb3738 | bellard | *bsdPath = '\0';
|
608 | 19cb3738 | bellard | nextMedia = IOIteratorNext( mediaIterator ); |
609 | 19cb3738 | bellard | if ( nextMedia )
|
610 | 19cb3738 | bellard | { |
611 | 19cb3738 | bellard | CFTypeRef bsdPathAsCFString; |
612 | 19cb3738 | bellard | bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR( kIOBSDNameKey ), kCFAllocatorDefault, 0 );
|
613 | 19cb3738 | bellard | if ( bsdPathAsCFString ) {
|
614 | 19cb3738 | bellard | size_t devPathLength; |
615 | 19cb3738 | bellard | strcpy( bsdPath, _PATH_DEV ); |
616 | 19cb3738 | bellard | strcat( bsdPath, "r" );
|
617 | 19cb3738 | bellard | devPathLength = strlen( bsdPath ); |
618 | 19cb3738 | bellard | if ( CFStringGetCString( bsdPathAsCFString, bsdPath + devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
|
619 | 19cb3738 | bellard | kernResult = KERN_SUCCESS; |
620 | 19cb3738 | bellard | } |
621 | 19cb3738 | bellard | CFRelease( bsdPathAsCFString ); |
622 | 19cb3738 | bellard | } |
623 | 19cb3738 | bellard | IOObjectRelease( nextMedia ); |
624 | 19cb3738 | bellard | } |
625 | 3b46e624 | ths | |
626 | 19cb3738 | bellard | return kernResult;
|
627 | 19cb3738 | bellard | } |
628 | 19cb3738 | bellard | |
629 | 19cb3738 | bellard | #endif
|
630 | 19cb3738 | bellard | |
631 | 19cb3738 | bellard | static int hdev_open(BlockDriverState *bs, const char *filename, int flags) |
632 | 19cb3738 | bellard | { |
633 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
634 | 19cb3738 | bellard | int fd, open_flags, ret;
|
635 | 19cb3738 | bellard | |
636 | 19cb3738 | bellard | #ifdef CONFIG_COCOA
|
637 | 19cb3738 | bellard | if (strstart(filename, "/dev/cdrom", NULL)) { |
638 | 19cb3738 | bellard | kern_return_t kernResult; |
639 | 19cb3738 | bellard | io_iterator_t mediaIterator; |
640 | 19cb3738 | bellard | char bsdPath[ MAXPATHLEN ];
|
641 | 19cb3738 | bellard | int fd;
|
642 | 5fafdf24 | ths | |
643 | 19cb3738 | bellard | kernResult = FindEjectableCDMedia( &mediaIterator ); |
644 | 19cb3738 | bellard | kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
|
645 | 3b46e624 | ths | |
646 | 19cb3738 | bellard | if ( bsdPath[ 0 ] != '\0' ) { |
647 | 19cb3738 | bellard | strcat(bsdPath,"s0");
|
648 | 19cb3738 | bellard | /* some CDs don't have a partition 0 */
|
649 | 19cb3738 | bellard | fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE); |
650 | 19cb3738 | bellard | if (fd < 0) { |
651 | 19cb3738 | bellard | bsdPath[strlen(bsdPath)-1] = '1'; |
652 | 19cb3738 | bellard | } else {
|
653 | 19cb3738 | bellard | close(fd); |
654 | 19cb3738 | bellard | } |
655 | 19cb3738 | bellard | filename = bsdPath; |
656 | 19cb3738 | bellard | } |
657 | 3b46e624 | ths | |
658 | 19cb3738 | bellard | if ( mediaIterator )
|
659 | 19cb3738 | bellard | IOObjectRelease( mediaIterator ); |
660 | 19cb3738 | bellard | } |
661 | 19cb3738 | bellard | #endif
|
662 | 19cb3738 | bellard | open_flags = O_BINARY; |
663 | 19cb3738 | bellard | if ((flags & BDRV_O_ACCESS) == O_RDWR) {
|
664 | 19cb3738 | bellard | open_flags |= O_RDWR; |
665 | 19cb3738 | bellard | } else {
|
666 | 19cb3738 | bellard | open_flags |= O_RDONLY; |
667 | 19cb3738 | bellard | bs->read_only = 1;
|
668 | 19cb3738 | bellard | } |
669 | 33f00271 | balrog | #ifdef O_DIRECT
|
670 | 33f00271 | balrog | if (flags & BDRV_O_DIRECT)
|
671 | 33f00271 | balrog | open_flags |= O_DIRECT; |
672 | 33f00271 | balrog | #endif
|
673 | 19cb3738 | bellard | |
674 | 19cb3738 | bellard | s->type = FTYPE_FILE; |
675 | 19cb3738 | bellard | #if defined(__linux__)
|
676 | 19cb3738 | bellard | if (strstart(filename, "/dev/cd", NULL)) { |
677 | 19cb3738 | bellard | /* open will not fail even if no CD is inserted */
|
678 | 19cb3738 | bellard | open_flags |= O_NONBLOCK; |
679 | 19cb3738 | bellard | s->type = FTYPE_CD; |
680 | 19cb3738 | bellard | } else if (strstart(filename, "/dev/fd", NULL)) { |
681 | 19cb3738 | bellard | s->type = FTYPE_FD; |
682 | 19cb3738 | bellard | s->fd_open_flags = open_flags; |
683 | 19cb3738 | bellard | /* open will not fail even if no floppy is inserted */
|
684 | 19cb3738 | bellard | open_flags |= O_NONBLOCK; |
685 | 985a03b0 | ths | } else if (strstart(filename, "/dev/sg", NULL)) { |
686 | 985a03b0 | ths | bs->sg = 1;
|
687 | 19cb3738 | bellard | } |
688 | 19cb3738 | bellard | #endif
|
689 | 19cb3738 | bellard | fd = open(filename, open_flags, 0644);
|
690 | 19cb3738 | bellard | if (fd < 0) { |
691 | 19cb3738 | bellard | ret = -errno; |
692 | 19cb3738 | bellard | if (ret == -EROFS)
|
693 | 19cb3738 | bellard | ret = -EACCES; |
694 | 19cb3738 | bellard | return ret;
|
695 | 19cb3738 | bellard | } |
696 | 19cb3738 | bellard | s->fd = fd; |
697 | 19cb3738 | bellard | #if defined(__linux__)
|
698 | 19cb3738 | bellard | /* close fd so that we can reopen it as needed */
|
699 | 19cb3738 | bellard | if (s->type == FTYPE_FD) {
|
700 | 19cb3738 | bellard | close(s->fd); |
701 | 19cb3738 | bellard | s->fd = -1;
|
702 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
703 | 19cb3738 | bellard | } |
704 | 19cb3738 | bellard | #endif
|
705 | 19cb3738 | bellard | return 0; |
706 | 19cb3738 | bellard | } |
707 | 19cb3738 | bellard | |
708 | faf07963 | pbrook | #if defined(__linux__) && !defined(QEMU_IMG)
|
709 | 19cb3738 | bellard | |
710 | 19cb3738 | bellard | /* Note: we do not have a reliable method to detect if the floppy is
|
711 | 19cb3738 | bellard | present. The current method is to try to open the floppy at every
|
712 | 19cb3738 | bellard | I/O and to keep it opened during a few hundreds of ms. */
|
713 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs) |
714 | 19cb3738 | bellard | { |
715 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
716 | 19cb3738 | bellard | int last_media_present;
|
717 | 19cb3738 | bellard | |
718 | 19cb3738 | bellard | if (s->type != FTYPE_FD)
|
719 | 19cb3738 | bellard | return 0; |
720 | 19cb3738 | bellard | last_media_present = (s->fd >= 0);
|
721 | 5fafdf24 | ths | if (s->fd >= 0 && |
722 | 19cb3738 | bellard | (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { |
723 | 19cb3738 | bellard | close(s->fd); |
724 | 19cb3738 | bellard | s->fd = -1;
|
725 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
726 | 19cb3738 | bellard | printf("Floppy closed\n");
|
727 | 19cb3738 | bellard | #endif
|
728 | 19cb3738 | bellard | } |
729 | 19cb3738 | bellard | if (s->fd < 0) { |
730 | 5fafdf24 | ths | if (s->fd_got_error &&
|
731 | 19cb3738 | bellard | (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) { |
732 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
733 | 19cb3738 | bellard | printf("No floppy (open delayed)\n");
|
734 | 19cb3738 | bellard | #endif
|
735 | 19cb3738 | bellard | return -EIO;
|
736 | 19cb3738 | bellard | } |
737 | 19cb3738 | bellard | s->fd = open(bs->filename, s->fd_open_flags); |
738 | 19cb3738 | bellard | if (s->fd < 0) { |
739 | 19cb3738 | bellard | s->fd_error_time = qemu_get_clock(rt_clock); |
740 | 19cb3738 | bellard | s->fd_got_error = 1;
|
741 | 19cb3738 | bellard | if (last_media_present)
|
742 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
743 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
744 | 19cb3738 | bellard | printf("No floppy\n");
|
745 | 19cb3738 | bellard | #endif
|
746 | 19cb3738 | bellard | return -EIO;
|
747 | 19cb3738 | bellard | } |
748 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
749 | 19cb3738 | bellard | printf("Floppy opened\n");
|
750 | 19cb3738 | bellard | #endif
|
751 | 19cb3738 | bellard | } |
752 | 19cb3738 | bellard | if (!last_media_present)
|
753 | 19cb3738 | bellard | s->fd_media_changed = 1;
|
754 | 19cb3738 | bellard | s->fd_open_time = qemu_get_clock(rt_clock); |
755 | 19cb3738 | bellard | s->fd_got_error = 0;
|
756 | 19cb3738 | bellard | return 0; |
757 | 19cb3738 | bellard | } |
758 | 19cb3738 | bellard | #else
|
759 | 19cb3738 | bellard | static int fd_open(BlockDriverState *bs) |
760 | 19cb3738 | bellard | { |
761 | 19cb3738 | bellard | return 0; |
762 | 19cb3738 | bellard | } |
763 | 19cb3738 | bellard | #endif
|
764 | 19cb3738 | bellard | |
765 | 19cb3738 | bellard | #if defined(__linux__)
|
766 | 19cb3738 | bellard | |
767 | 19cb3738 | bellard | static int raw_is_inserted(BlockDriverState *bs) |
768 | 19cb3738 | bellard | { |
769 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
770 | 19cb3738 | bellard | int ret;
|
771 | 19cb3738 | bellard | |
772 | 19cb3738 | bellard | switch(s->type) {
|
773 | 19cb3738 | bellard | case FTYPE_CD:
|
774 | 19cb3738 | bellard | ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); |
775 | 19cb3738 | bellard | if (ret == CDS_DISC_OK)
|
776 | 19cb3738 | bellard | return 1; |
777 | 19cb3738 | bellard | else
|
778 | 19cb3738 | bellard | return 0; |
779 | 19cb3738 | bellard | break;
|
780 | 19cb3738 | bellard | case FTYPE_FD:
|
781 | 19cb3738 | bellard | ret = fd_open(bs); |
782 | 19cb3738 | bellard | return (ret >= 0); |
783 | 19cb3738 | bellard | default:
|
784 | 19cb3738 | bellard | return 1; |
785 | 19cb3738 | bellard | } |
786 | 19cb3738 | bellard | } |
787 | 19cb3738 | bellard | |
788 | 19cb3738 | bellard | /* currently only used by fdc.c, but a CD version would be good too */
|
789 | 19cb3738 | bellard | static int raw_media_changed(BlockDriverState *bs) |
790 | 19cb3738 | bellard | { |
791 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
792 | 19cb3738 | bellard | |
793 | 19cb3738 | bellard | switch(s->type) {
|
794 | 19cb3738 | bellard | case FTYPE_FD:
|
795 | 19cb3738 | bellard | { |
796 | 19cb3738 | bellard | int ret;
|
797 | 19cb3738 | bellard | /* XXX: we do not have a true media changed indication. It
|
798 | 19cb3738 | bellard | does not work if the floppy is changed without trying
|
799 | 19cb3738 | bellard | to read it */
|
800 | 19cb3738 | bellard | fd_open(bs); |
801 | 19cb3738 | bellard | ret = s->fd_media_changed; |
802 | 19cb3738 | bellard | s->fd_media_changed = 0;
|
803 | 19cb3738 | bellard | #ifdef DEBUG_FLOPPY
|
804 | 19cb3738 | bellard | printf("Floppy changed=%d\n", ret);
|
805 | 19cb3738 | bellard | #endif
|
806 | 19cb3738 | bellard | return ret;
|
807 | 19cb3738 | bellard | } |
808 | 19cb3738 | bellard | default:
|
809 | 19cb3738 | bellard | return -ENOTSUP;
|
810 | 19cb3738 | bellard | } |
811 | 19cb3738 | bellard | } |
812 | 19cb3738 | bellard | |
813 | 19cb3738 | bellard | static int raw_eject(BlockDriverState *bs, int eject_flag) |
814 | 19cb3738 | bellard | { |
815 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
816 | 19cb3738 | bellard | |
817 | 19cb3738 | bellard | switch(s->type) {
|
818 | 19cb3738 | bellard | case FTYPE_CD:
|
819 | 19cb3738 | bellard | if (eject_flag) {
|
820 | 19cb3738 | bellard | if (ioctl (s->fd, CDROMEJECT, NULL) < 0) |
821 | 19cb3738 | bellard | perror("CDROMEJECT");
|
822 | 19cb3738 | bellard | } else {
|
823 | 19cb3738 | bellard | if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0) |
824 | 19cb3738 | bellard | perror("CDROMEJECT");
|
825 | 19cb3738 | bellard | } |
826 | 19cb3738 | bellard | break;
|
827 | 19cb3738 | bellard | case FTYPE_FD:
|
828 | 19cb3738 | bellard | { |
829 | 19cb3738 | bellard | int fd;
|
830 | 19cb3738 | bellard | if (s->fd >= 0) { |
831 | 19cb3738 | bellard | close(s->fd); |
832 | 19cb3738 | bellard | s->fd = -1;
|
833 | 19cb3738 | bellard | } |
834 | 19cb3738 | bellard | fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK); |
835 | 19cb3738 | bellard | if (fd >= 0) { |
836 | 19cb3738 | bellard | if (ioctl(fd, FDEJECT, 0) < 0) |
837 | 19cb3738 | bellard | perror("FDEJECT");
|
838 | 19cb3738 | bellard | close(fd); |
839 | 19cb3738 | bellard | } |
840 | 19cb3738 | bellard | } |
841 | 19cb3738 | bellard | break;
|
842 | 19cb3738 | bellard | default:
|
843 | 19cb3738 | bellard | return -ENOTSUP;
|
844 | 19cb3738 | bellard | } |
845 | 19cb3738 | bellard | return 0; |
846 | 19cb3738 | bellard | } |
847 | 19cb3738 | bellard | |
848 | 19cb3738 | bellard | static int raw_set_locked(BlockDriverState *bs, int locked) |
849 | 19cb3738 | bellard | { |
850 | 19cb3738 | bellard | BDRVRawState *s = bs->opaque; |
851 | 19cb3738 | bellard | |
852 | 19cb3738 | bellard | switch(s->type) {
|
853 | 19cb3738 | bellard | case FTYPE_CD:
|
854 | 19cb3738 | bellard | if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) { |
855 | 19cb3738 | bellard | /* Note: an error can happen if the distribution automatically
|
856 | 19cb3738 | bellard | mounts the CD-ROM */
|
857 | 19cb3738 | bellard | // perror("CDROM_LOCKDOOR");
|
858 | 19cb3738 | bellard | } |
859 | 19cb3738 | bellard | break;
|
860 | 19cb3738 | bellard | default:
|
861 | 19cb3738 | bellard | return -ENOTSUP;
|
862 | 19cb3738 | bellard | } |
863 | 19cb3738 | bellard | return 0; |
864 | 19cb3738 | bellard | } |
865 | 19cb3738 | bellard | |
866 | 985a03b0 | ths | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
867 | 985a03b0 | ths | { |
868 | 985a03b0 | ths | BDRVRawState *s = bs->opaque; |
869 | 985a03b0 | ths | |
870 | 985a03b0 | ths | return ioctl(s->fd, req, buf);
|
871 | 985a03b0 | ths | } |
872 | 19cb3738 | bellard | #else
|
873 | 19cb3738 | bellard | |
874 | 19cb3738 | bellard | static int raw_is_inserted(BlockDriverState *bs) |
875 | 19cb3738 | bellard | { |
876 | 19cb3738 | bellard | return 1; |
877 | 19cb3738 | bellard | } |
878 | 19cb3738 | bellard | |
879 | 19cb3738 | bellard | static int raw_media_changed(BlockDriverState *bs) |
880 | 19cb3738 | bellard | { |
881 | 19cb3738 | bellard | return -ENOTSUP;
|
882 | 19cb3738 | bellard | } |
883 | 19cb3738 | bellard | |
884 | 19cb3738 | bellard | static int raw_eject(BlockDriverState *bs, int eject_flag) |
885 | 19cb3738 | bellard | { |
886 | 19cb3738 | bellard | return -ENOTSUP;
|
887 | 19cb3738 | bellard | } |
888 | 19cb3738 | bellard | |
889 | 19cb3738 | bellard | static int raw_set_locked(BlockDriverState *bs, int locked) |
890 | 19cb3738 | bellard | { |
891 | 19cb3738 | bellard | return -ENOTSUP;
|
892 | 19cb3738 | bellard | } |
893 | 19cb3738 | bellard | |
894 | 985a03b0 | ths | static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
895 | 985a03b0 | ths | { |
896 | 985a03b0 | ths | return -ENOTSUP;
|
897 | 985a03b0 | ths | } |
898 | 19cb3738 | bellard | #endif /* !linux */ |
899 | 19cb3738 | bellard | |
900 | 19cb3738 | bellard | BlockDriver bdrv_host_device = { |
901 | 19cb3738 | bellard | "host_device",
|
902 | 19cb3738 | bellard | sizeof(BDRVRawState),
|
903 | 19cb3738 | bellard | NULL, /* no probe for protocols */ |
904 | 19cb3738 | bellard | hdev_open, |
905 | 19cb3738 | bellard | NULL,
|
906 | 19cb3738 | bellard | NULL,
|
907 | 19cb3738 | bellard | raw_close, |
908 | 19cb3738 | bellard | NULL,
|
909 | 19cb3738 | bellard | raw_flush, |
910 | 3b46e624 | ths | |
911 | 19cb3738 | bellard | .bdrv_aio_read = raw_aio_read, |
912 | 19cb3738 | bellard | .bdrv_aio_write = raw_aio_write, |
913 | 19cb3738 | bellard | .bdrv_aio_cancel = raw_aio_cancel, |
914 | 19cb3738 | bellard | .aiocb_size = sizeof(RawAIOCB),
|
915 | 19cb3738 | bellard | .bdrv_pread = raw_pread, |
916 | 19cb3738 | bellard | .bdrv_pwrite = raw_pwrite, |
917 | 19cb3738 | bellard | .bdrv_getlength = raw_getlength, |
918 | 19cb3738 | bellard | |
919 | 19cb3738 | bellard | /* removable device support */
|
920 | 19cb3738 | bellard | .bdrv_is_inserted = raw_is_inserted, |
921 | 19cb3738 | bellard | .bdrv_media_changed = raw_media_changed, |
922 | 19cb3738 | bellard | .bdrv_eject = raw_eject, |
923 | 19cb3738 | bellard | .bdrv_set_locked = raw_set_locked, |
924 | 985a03b0 | ths | /* generic scsi device */
|
925 | 985a03b0 | ths | .bdrv_ioctl = raw_ioctl, |
926 | 19cb3738 | bellard | }; |