Revision 9f7965c7 vl.c
| b/vl.c | ||
|---|---|---|
| 5648 | 5648 |
} |
| 5649 | 5649 |
|
| 5650 | 5650 |
if (get_param_value(buf, sizeof(buf), "cache", str)) {
|
| 5651 |
if (!strcmp(buf, "off")) |
|
| 5651 |
if (!strcmp(buf, "off") || !strcmp(buf, "none"))
|
|
| 5652 | 5652 |
cache = 0; |
| 5653 |
else if (!strcmp(buf, "on"))
|
|
| 5653 |
else if (!strcmp(buf, "writethrough"))
|
|
| 5654 | 5654 |
cache = 1; |
| 5655 |
else if (!strcmp(buf, "writeback")) |
|
| 5656 |
cache = 2; |
|
| 5655 | 5657 |
else {
|
| 5656 | 5658 |
fprintf(stderr, "qemu: invalid cache option\n"); |
| 5657 | 5659 |
return -1; |
| ... | ... | |
| 5770 | 5772 |
if (!file[0]) |
| 5771 | 5773 |
return 0; |
| 5772 | 5774 |
bdrv_flags = 0; |
| 5773 |
if (snapshot) |
|
| 5775 |
if (snapshot) {
|
|
| 5774 | 5776 |
bdrv_flags |= BDRV_O_SNAPSHOT; |
| 5775 |
if (!cache) |
|
| 5776 |
bdrv_flags |= BDRV_O_DIRECT; |
|
| 5777 |
cache = 2; /* always use write-back with snapshot */ |
|
| 5778 |
} |
|
| 5779 |
if (cache == 0) /* no caching */ |
|
| 5780 |
bdrv_flags |= BDRV_O_NOCACHE; |
|
| 5781 |
else if (cache == 2) /* write-back */ |
|
| 5782 |
bdrv_flags |= BDRV_O_CACHE_WB; |
|
| 5777 | 5783 |
if (bdrv_open2(bdrv, file, bdrv_flags, drv) < 0 || qemu_key_check(bdrv, file)) {
|
| 5778 | 5784 |
fprintf(stderr, "qemu: could not open disk image %s\n", |
| 5779 | 5785 |
file); |
| ... | ... | |
| 8145 | 8151 |
"-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n" |
| 8146 | 8152 |
"-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i]\n" |
| 8147 | 8153 |
" [,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off]\n" |
| 8148 |
" [,cache=on|off][,format=f]\n"
|
|
| 8154 |
" [,cache=writethrough|writeback|none][,format=f]\n"
|
|
| 8149 | 8155 |
" use 'file' as a drive image\n" |
| 8150 | 8156 |
"-mtdblock file use 'file' as on-board Flash memory image\n" |
| 8151 | 8157 |
"-sd file use 'file' as SecureDigital card image\n" |
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