diff options
Diffstat (limited to 'block/raw-posix.c')
| -rw-r--r-- | block/raw-posix.c | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index 5981d04473..155205f7ee 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -185,6 +185,28 @@ static int raw_normalize_devicepath(const char **filename) } #endif +static void raw_parse_flags(int bdrv_flags, int *open_flags) +{ + assert(open_flags != NULL); + + *open_flags |= O_BINARY; + *open_flags &= ~O_ACCMODE; + if (bdrv_flags & BDRV_O_RDWR) { + *open_flags |= O_RDWR; + } else { + *open_flags |= O_RDONLY; + } + + /* Use O_DSYNC for write-through caching, no flags for write-back caching, + * and O_DIRECT for no caching. */ + if ((bdrv_flags & BDRV_O_NOCACHE)) { + *open_flags |= O_DIRECT; + } + if (!(bdrv_flags & BDRV_O_CACHE_WB)) { + *open_flags |= O_DSYNC; + } +} + #ifdef CONFIG_LINUX_AIO static int raw_set_aio(void **aio_ctx, int *use_aio, int bdrv_flags) { @@ -228,20 +250,8 @@ static int raw_open_common(BlockDriverState *bs, const char *filename, return ret; } - s->open_flags = open_flags | O_BINARY; - s->open_flags &= ~O_ACCMODE; - if (bdrv_flags & BDRV_O_RDWR) { - s->open_flags |= O_RDWR; - } else { - s->open_flags |= O_RDONLY; - } - - /* Use O_DSYNC for write-through caching, no flags for write-back caching, - * and O_DIRECT for no caching. */ - if ((bdrv_flags & BDRV_O_NOCACHE)) - s->open_flags |= O_DIRECT; - if (!(bdrv_flags & BDRV_O_CACHE_WB)) - s->open_flags |= O_DSYNC; + s->open_flags = open_flags; + raw_parse_flags(bdrv_flags, &s->open_flags); s->fd = -1; fd = qemu_open(filename, s->open_flags, 0644); |