diff options
Diffstat (limited to 'lib/libufs/block.c')
-rw-r--r-- | lib/libufs/block.c | 46 |
1 files changed, 13 insertions, 33 deletions
diff --git a/lib/libufs/block.c b/lib/libufs/block.c index 20002fc4df1b..8bccc18ed3dd 100644 --- a/lib/libufs/block.c +++ b/lib/libufs/block.c @@ -27,7 +27,6 @@ * POSSIBILITY OF SUCH DAMAGE. */ -#include <sys/cdefs.h> #include <sys/param.h> #include <sys/mount.h> #include <sys/disk.h> @@ -57,19 +56,10 @@ bread(struct uufsd *disk, ufs2_daddr_t blockno, void *data, size_t size) ERROR(disk, NULL); - p2 = data; - /* - * XXX: various disk controllers require alignment of our buffer - * XXX: which is stricter than struct alignment. - * XXX: Bounce the buffer if not 64 byte aligned. - * XXX: this can be removed if/when the kernel is fixed - */ - if (((intptr_t)data) & 0x3f) { - p2 = malloc(size); - if (p2 == NULL) { - ERROR(disk, "allocate bounce buffer"); - goto fail; - } + BUF_MALLOC(&p2, data, size); + if (p2 == NULL) { + ERROR(disk, "allocate bounce buffer"); + goto fail; } cnt = pread(disk->d_fd, p2, size, (off_t)(blockno * disk->d_bsize)); if (cnt == -1) { @@ -101,7 +91,7 @@ bwrite(struct uufsd *disk, ufs2_daddr_t blockno, const void *data, size_t size) { ssize_t cnt; int rv; - void *p2 = NULL; + void *p2; ERROR(disk, NULL); @@ -110,24 +100,15 @@ bwrite(struct uufsd *disk, ufs2_daddr_t blockno, const void *data, size_t size) ERROR(disk, "failed to open disk for writing"); return (-1); } - - /* - * XXX: various disk controllers require alignment of our buffer - * XXX: which is stricter than struct alignment. - * XXX: Bounce the buffer if not 64 byte aligned. - * XXX: this can be removed if/when the kernel is fixed - */ - if (((intptr_t)data) & 0x3f) { - p2 = malloc(size); - if (p2 == NULL) { - ERROR(disk, "allocate bounce buffer"); - return (-1); - } - memcpy(p2, data, size); - data = p2; + BUF_MALLOC(&p2, data, size); + if (p2 == NULL) { + ERROR(disk, "allocate bounce buffer"); + return (-1); } - cnt = pwrite(disk->d_fd, data, size, (off_t)(blockno * disk->d_bsize)); - if (p2 != NULL) + if (p2 != data) + memcpy(p2, data, size); + cnt = pwrite(disk->d_fd, p2, size, (off_t)(blockno * disk->d_bsize)); + if (p2 != data) free(p2); if (cnt == -1) { ERROR(disk, "write error to block device"); @@ -137,7 +118,6 @@ bwrite(struct uufsd *disk, ufs2_daddr_t blockno, const void *data, size_t size) ERROR(disk, "short write to block device"); return (-1); } - return (cnt); } |