The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=ae7e8a02e6e93455e026036132c4d053b2c12ad9
commit ae7e8a02e6e93455e026036132c4d053b2c12ad9 Author: Konstantin Belousov <[email protected]> AuthorDate: 2021-08-01 17:53:12 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2021-08-27 15:39:45 +0000 msdosfs deget(): add locking flags argument LK_EXCLUSIVE must be passed always, some consumers need the ability to specify LK_NOWAIT Reviewed by: mckusick Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D31464 --- sys/fs/msdosfs/denode.h | 2 +- sys/fs/msdosfs/msdosfs_denode.c | 13 ++++++++----- sys/fs/msdosfs/msdosfs_lookup.c | 15 +++++++++------ sys/fs/msdosfs/msdosfs_vfsops.c | 5 +++-- usr.sbin/makefs/msdos/msdosfs_denode.c | 2 +- usr.sbin/makefs/msdos/msdosfs_lookup.c | 2 +- usr.sbin/makefs/msdos/msdosfs_vfsops.c | 2 +- 7 files changed, 24 insertions(+), 17 deletions(-) diff --git a/sys/fs/msdosfs/denode.h b/sys/fs/msdosfs/denode.h index f133f3f90cd6..80ebf250febf 100644 --- a/sys/fs/msdosfs/denode.h +++ b/sys/fs/msdosfs/denode.h @@ -275,7 +275,7 @@ int msdosfs_lookup_ino(struct vnode *vdp, struct vnode **vpp, * Internal service routine prototypes. */ struct componentname; -int deget(struct msdosfsmount *, u_long, u_long, struct denode **); +int deget(struct msdosfsmount *, u_long, u_long, int, struct denode **); int uniqdosname(struct denode *, struct componentname *, u_char *); int readep(struct msdosfsmount *pmp, u_long dirclu, u_long dirofs, struct buf **bpp, struct direntry **epp); diff --git a/sys/fs/msdosfs/msdosfs_denode.c b/sys/fs/msdosfs/msdosfs_denode.c index 369533067ce9..d97e61f7932c 100644 --- a/sys/fs/msdosfs/msdosfs_denode.c +++ b/sys/fs/msdosfs/msdosfs_denode.c @@ -92,11 +92,12 @@ de_vncmpf(struct vnode *vp, void *arg) * diroffset is relative to the beginning of the root directory, * otherwise it is cluster relative. * diroffset - offset past begin of cluster of denode we want + * lkflags - locking flags (LK_NOWAIT) * depp - returns the address of the gotten denode. */ int deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset, - struct denode **depp) + int lkflags, struct denode **depp) { int error; uint64_t inode; @@ -107,9 +108,11 @@ deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset, struct buf *bp; #ifdef MSDOSFS_DEBUG - printf("deget(pmp %p, dirclust %lu, diroffset %lx, depp %p)\n", - pmp, dirclust, diroffset, depp); + printf("deget(pmp %p, dirclust %lu, diroffset %lx, flags %#x, " + "depp %p)\n", + pmp, dirclust, diroffset, flags, depp); #endif + MPASS((lkflags & LK_TYPE_MASK) == LK_EXCLUSIVE); /* * On FAT32 filesystems, root is a (more or less) normal @@ -133,7 +136,7 @@ deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset, */ inode = (uint64_t)pmp->pm_bpcluster * dirclust + diroffset; - error = vfs_hash_get(mntp, inode, LK_EXCLUSIVE, curthread, &nvp, + error = vfs_hash_get(mntp, inode, lkflags, curthread, &nvp, de_vncmpf, &inode); if (error) return (error); @@ -171,7 +174,7 @@ deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset, *depp = NULL; return (error); } - error = vfs_hash_insert(nvp, inode, LK_EXCLUSIVE, curthread, &xvp, + error = vfs_hash_insert(nvp, inode, lkflags, curthread, &xvp, de_vncmpf, &inode); if (error) { *depp = NULL; diff --git a/sys/fs/msdosfs/msdosfs_lookup.c b/sys/fs/msdosfs/msdosfs_lookup.c index bdfff7bf3206..d47f2969904b 100644 --- a/sys/fs/msdosfs/msdosfs_lookup.c +++ b/sys/fs/msdosfs/msdosfs_lookup.c @@ -86,7 +86,8 @@ msdosfs_deget_dotdot(struct mount *mp, void *arg, int lkflags, pmp = VFSTOMSDOSFS(mp); dd_arg = arg; - error = deget(pmp, dd_arg->cluster, dd_arg->blkoff, &rdp); + error = deget(pmp, dd_arg->cluster, dd_arg->blkoff, + LK_EXCLUSIVE, &rdp); if (error == 0) *rvp = DETOV(rdp); return (error); @@ -495,7 +496,7 @@ foundroot: *vpp = vdp; return (0); } - error = deget(pmp, cluster, blkoff, &tdp); + error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE, &tdp); if (error) return (error); *vpp = DETOV(tdp); @@ -523,7 +524,8 @@ foundroot: if (dp->de_StartCluster == scn && isadir) return (EISDIR); - if ((error = deget(pmp, cluster, blkoff, &tdp)) != 0) + if ((error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE, + &tdp)) != 0) return (error); *vpp = DETOV(tdp); cnp->cn_flags |= SAVENAME; @@ -569,7 +571,8 @@ foundroot: VREF(vdp); /* we want ourself, ie "." */ *vpp = vdp; } else { - if ((error = deget(pmp, cluster, blkoff, &tdp)) != 0) + if ((error = deget(pmp, cluster, blkoff, LK_EXCLUSIVE, + &tdp)) != 0) return (error); *vpp = DETOV(tdp); } @@ -708,7 +711,7 @@ createde(struct denode *dep, struct denode *ddep, struct denode **depp, else diroffset = 0; } - return deget(pmp, dirclust, diroffset, depp); + return (deget(pmp, dirclust, diroffset, LK_EXCLUSIVE, depp)); } return 0; @@ -862,7 +865,7 @@ doscheckpath(struct denode *source, struct denode *target) brelse(bp); bp = NULL; /* NOTE: deget() clears dep on error */ - if ((error = deget(pmp, scn, 0, &dep)) != 0) + if ((error = deget(pmp, scn, 0, LK_EXCLUSIVE, &dep)) != 0) break; } out:; diff --git a/sys/fs/msdosfs/msdosfs_vfsops.c b/sys/fs/msdosfs/msdosfs_vfsops.c index 187463cc7f4d..68c8a93a18af 100644 --- a/sys/fs/msdosfs/msdosfs_vfsops.c +++ b/sys/fs/msdosfs/msdosfs_vfsops.c @@ -847,7 +847,7 @@ msdosfs_root(struct mount *mp, int flags, struct vnode **vpp) #ifdef MSDOSFS_DEBUG printf("msdosfs_root(); mp %p, pmp %p\n", mp, pmp); #endif - error = deget(pmp, MSDOSFSROOT, MSDOSFSROOT_OFS, &ndep); + error = deget(pmp, MSDOSFSROOT, MSDOSFSROOT_OFS, LK_EXCLUSIVE, &ndep); if (error) return (error); *vpp = DETOV(ndep); @@ -988,7 +988,8 @@ msdosfs_fhtovp(struct mount *mp, struct fid *fhp, int flags, struct vnode **vpp) struct denode *dep; int error; - error = deget(pmp, defhp->defid_dirclust, defhp->defid_dirofs, &dep); + error = deget(pmp, defhp->defid_dirclust, defhp->defid_dirofs, + LK_EXCLUSIVE, &dep); if (error) { *vpp = NULLVP; return (error); diff --git a/usr.sbin/makefs/msdos/msdosfs_denode.c b/usr.sbin/makefs/msdos/msdosfs_denode.c index 48c305824793..3fbd867275d2 100644 --- a/usr.sbin/makefs/msdos/msdosfs_denode.c +++ b/usr.sbin/makefs/msdos/msdosfs_denode.c @@ -84,7 +84,7 @@ __FBSDID("$FreeBSD$"); */ int deget(struct msdosfsmount *pmp, u_long dirclust, u_long diroffset, - struct denode **depp) + int lkflags __unused, struct denode **depp) { int error; uint64_t inode; diff --git a/usr.sbin/makefs/msdos/msdosfs_lookup.c b/usr.sbin/makefs/msdos/msdosfs_lookup.c index a4db6ae1a4a2..fb2f4deceaf2 100644 --- a/usr.sbin/makefs/msdos/msdosfs_lookup.c +++ b/usr.sbin/makefs/msdos/msdosfs_lookup.c @@ -187,7 +187,7 @@ createde(struct denode *dep, struct denode *ddep, struct denode **depp, else diroffset = 0; } - return deget(pmp, dirclust, diroffset, depp); + return deget(pmp, dirclust, diroffset, 0, depp); } return 0; diff --git a/usr.sbin/makefs/msdos/msdosfs_vfsops.c b/usr.sbin/makefs/msdos/msdosfs_vfsops.c index dd933bb2be61..508e044ac1ca 100644 --- a/usr.sbin/makefs/msdos/msdosfs_vfsops.c +++ b/usr.sbin/makefs/msdos/msdosfs_vfsops.c @@ -349,7 +349,7 @@ msdosfs_root(struct msdosfsmount *pmp, struct m_vnode *vp) { int error; *vp = *(struct m_vnode *)pmp->pm_devvp; - if ((error = deget(pmp, MSDOSFSROOT, MSDOSFSROOT_OFS, &ndep)) != 0) { + if ((error = deget(pmp, MSDOSFSROOT, MSDOSFSROOT_OFS, 0, &ndep)) != 0) { errno = error; return -1; } _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
