diff options
-rw-r--r-- | sys/fs/msdosfs/msdosfs_vfsops.c | 87 |
1 files changed, 78 insertions, 9 deletions
diff --git a/sys/fs/msdosfs/msdosfs_vfsops.c b/sys/fs/msdosfs/msdosfs_vfsops.c index cf68ec1..aca1604 100644 --- a/sys/fs/msdosfs/msdosfs_vfsops.c +++ b/sys/fs/msdosfs/msdosfs_vfsops.c @@ -51,6 +51,8 @@ #include <sys/param.h> #include <sys/systm.h> #include <sys/conf.h> +#include <sys/lock.h> +#include <sys/mutex.h> #include <sys/namei.h> #include <sys/proc.h> #include <sys/kernel.h> @@ -61,7 +63,6 @@ #include <sys/fcntl.h> #include <sys/malloc.h> #include <sys/stat.h> /* defines ALLPERMS */ -#include <sys/mutex.h> #include <fs/msdosfs/bpb.h> #include <fs/msdosfs/bootsect.h> @@ -70,8 +71,6 @@ #include <fs/msdosfs/msdosfsmount.h> #include <fs/msdosfs/fat.h> -#define MSDOSFS_DFLTBSIZE 4096 - #if 1 /*def PC98*/ /* * XXX - The boot signature formatted by NEC PC-98 DOS looks like a @@ -86,6 +85,8 @@ MALLOC_DEFINE(M_MSDOSFSMNT, "MSDOSFS mount", "MSDOSFS mount structure"); static MALLOC_DEFINE(M_MSDOSFSFAT, "MSDOSFS FAT", "MSDOSFS file allocation table"); +int bdemsd = 0; + static int update_mp(struct mount *mp, struct msdosfs_args *argp); static int mountmsdosfs(struct vnode *devvp, struct mount *mp, struct thread *td, struct msdosfs_args *argp); @@ -142,6 +143,67 @@ update_mp(mp, argp) return 0; } +#if 0 +int +msdosfs_mountroot() +{ + register struct mount *mp; + struct thread *td = curthread; /* XXX */ + size_t size; + int error; + struct msdosfs_args args; + + if (root_device->dv_class != DV_DISK) + return (ENODEV); + + /* + * Get vnodes for swapdev and rootdev. + */ + if (bdevvp(rootdev, &rootvp)) + panic("msdosfs_mountroot: can't setup rootvp"); + + mp = malloc((u_long)sizeof(struct mount), M_MOUNT, M_WAITOK | M_ZERO); + mp->mnt_op = &msdosfs_vfsops; + mp->mnt_flag = 0; + TAILQ_INIT(&mp->mnt_nvnodelist); + TAILQ_INIT(&mp->mnt_reservedvnlist); + + args.flags = 0; + args.uid = 0; + args.gid = 0; + args.mask = 0777; + + if ((error = mountmsdosfs(rootvp, mp, p, &args)) != 0) { + free(mp, M_MOUNT); + return (error); + } + + if ((error = update_mp(mp, &args)) != 0) { + (void)msdosfs_unmount(mp, 0, td); + free(mp, M_MOUNT); + return (error); + } + + if ((error = vfs_lock(mp)) != 0) { + (void)msdosfs_unmount(mp, 0, td); + free(mp, M_MOUNT); + return (error); + } + + TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list); + mp->mnt_vnodecovered = NULLVP; + (void) copystr("/", mp->mnt_stat.f_mntonname, MNAMELEN - 1, + &size); + bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); + (void) copystr(ROOTNAME, mp->mnt_stat.f_mntfromname, MNAMELEN - 1, + &size); + bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); + (void)msdosfs_statfs(mp, &mp->mnt_stat, td); + vfs_unlock(mp); + return (0); +} +#endif + /* * mp - path - addr in user space of mount point (ie /usr or whatever) * data - addr in user space of mount params including the name of the block @@ -330,9 +392,9 @@ mountmsdosfs(devvp, mp, td, argp) * Read the boot sector of the filesystem, and then check the * boot signature. If not a dos boot sector then error out. * - * NOTE: 2048 is a maximum sector size in current... + * NOTE: 8192 is a magic size that works for ffs. */ - error = bread(devvp, 0, 2048, NOCRED, &bp); + error = bread(devvp, 0, 8192, NOCRED, &bp); if (error) goto error_exit; bp->b_flags |= B_AGE; @@ -493,7 +555,7 @@ mountmsdosfs(devvp, mp, td, argp) if (FAT12(pmp)) pmp->pm_fatblocksize = 3 * pmp->pm_BytesPerSec; else - pmp->pm_fatblocksize = MSDOSFS_DFLTBSIZE; + pmp->pm_fatblocksize = PAGE_SIZE; /* XXX */ pmp->pm_fatblocksec = pmp->pm_fatblocksize / DEV_BSIZE; pmp->pm_bnshift = ffs(DEV_BSIZE) - 1; @@ -546,8 +608,9 @@ mountmsdosfs(devvp, mp, td, argp) * Check and validate (or perhaps invalidate?) the fsinfo structure? */ if (pmp->pm_fsinfo && pmp->pm_nxtfree > pmp->pm_maxcluster) { - printf("Next free cluster in FSInfo (%u) exceeds maxcluster (%u)\n", - pmp->pm_nxtfree, pmp->pm_maxcluster); + printf( + "Next free cluster in FSInfo (%lu) exceeds maxcluster (%lu)\n", + pmp->pm_nxtfree, pmp->pm_maxcluster); error = EINVAL; goto error_exit; } @@ -751,7 +814,7 @@ loop: if (vp->v_type == VNON || ((dep->de_flag & (DE_ACCESS | DE_CREATE | DE_UPDATE | DE_MODIFIED)) == 0 && - (TAILQ_EMPTY(&vp->v_dirtyblkhd) || waitfor == MNT_LAZY))) { + TAILQ_EMPTY(&vp->v_dirtyblkhd))) { mtx_unlock(&vp->v_interlock); mtx_lock(&mntvnode_mtx); continue; @@ -777,6 +840,12 @@ loop: */ if (waitfor != MNT_LAZY) { vn_lock(pmp->pm_devvp, LK_EXCLUSIVE | LK_RETRY, td); + if (!TAILQ_EMPTY(&pmp->pm_devvp->v_dirtyblkhd)) { + if (bdemsd) + Debugger("msdosfs: flush fs control info"); + else + printf("msdosfs: flush fs control info\n"); + } error = VOP_FSYNC(pmp->pm_devvp, cred, waitfor, td); if (error) allerror = error; |