The branch stable/14 has been updated by mckusick: URL: https://cgit.FreeBSD.org/src/commit/?id=636bf719194ce27390b45b8f68e430993670d2dd
commit 636bf719194ce27390b45b8f68e430993670d2dd Author: Kirk McKusick <[email protected]> AuthorDate: 2023-12-03 20:36:42 +0000 Commit: Kirk McKusick <[email protected]> CommitDate: 2023-12-17 03:45:51 +0000 Increase UFS/FFS maximum link count from 32767 to 65530. Differential Revision: https://reviews.freebsd.org/D42767 (cherry picked from commit 35a301555bff2ac27a727c10641b7efb3f162988) --- sys/ufs/ffs/ffs_alloc.c | 2 +- sys/ufs/ffs/ffs_softdep.c | 4 ++-- sys/ufs/ufs/dinode.h | 6 +++--- sys/ufs/ufs/inode.h | 10 ++++++++-- sys/ufs/ufs/ufs_lookup.c | 8 ++++---- sys/ufs/ufs/ufs_vnops.c | 32 ++++++++++++++++---------------- 6 files changed, 34 insertions(+), 28 deletions(-) diff --git a/sys/ufs/ffs/ffs_alloc.c b/sys/ufs/ffs/ffs_alloc.c index 2bf5b6c58302..690df0c12793 100644 --- a/sys/ufs/ffs/ffs_alloc.c +++ b/sys/ufs/ffs/ffs_alloc.c @@ -3332,7 +3332,7 @@ sysctl_ffs_fsck(SYSCTL_HANDLER_ARGS) break; ip = VTOI(vp); ip->i_nlink += cmd.size; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); ip->i_effnlink += cmd.size; UFS_INODE_SET_FLAG(ip, IN_CHANGE | IN_MODIFIED); error = ffs_update(vp, 1); diff --git a/sys/ufs/ffs/ffs_softdep.c b/sys/ufs/ffs/ffs_softdep.c index 28ffb806b308..961cb4493621 100644 --- a/sys/ufs/ffs/ffs_softdep.c +++ b/sys/ufs/ffs/ffs_softdep.c @@ -10048,7 +10048,7 @@ handle_workitem_remove(struct dirrem *dirrem, int flags) KASSERT(ip->i_nlink >= 0, ("handle_workitem_remove: file ino " "%ju negative i_nlink %d", (intmax_t)ip->i_number, ip->i_nlink)); - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (ip->i_nlink < ip->i_effnlink) panic("handle_workitem_remove: bad file delta"); @@ -10071,7 +10071,7 @@ handle_workitem_remove(struct dirrem *dirrem, int flags) ip->i_nlink -= 2; KASSERT(ip->i_nlink >= 0, ("handle_workitem_remove: directory ino " "%ju negative i_nlink %d", (intmax_t)ip->i_number, ip->i_nlink)); - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (ip->i_nlink < ip->i_effnlink) panic("handle_workitem_remove: bad dir delta"); diff --git a/sys/ufs/ufs/dinode.h b/sys/ufs/ufs/dinode.h index b429562f1159..b4117a99c262 100644 --- a/sys/ufs/ufs/dinode.h +++ b/sys/ufs/ufs/dinode.h @@ -125,7 +125,7 @@ typedef int64_t ufs_time_t; struct ufs2_dinode { uint16_t di_mode; /* 0: IFMT, permissions; see below. */ - int16_t di_nlink; /* 2: File link count. */ + uint16_t di_nlink; /* 2: File link count. */ uint32_t di_uid; /* 4: File owner. */ uint32_t di_gid; /* 8: File group. */ uint32_t di_blksize; /* 12: Inode blocksize. */ @@ -180,7 +180,7 @@ struct ufs2_dinode { */ struct ufs1_dinode { uint16_t di_mode; /* 0: IFMT, permissions; see below. */ - int16_t di_nlink; /* 2: File link count. */ + uint16_t di_nlink; /* 2: File link count. */ union { uint32_t di_freelink; /* 4: SUJ: Next unlinked inode. */ uint32_t di_dirdepth; /* 4: IFDIR: depth from root dir */ @@ -210,6 +210,6 @@ struct ufs1_dinode { uint64_t di_modrev; /* 120: i_modrev for NFSv4 */ }; -#define UFS_LINK_MAX 32767 +#define UFS_LINK_MAX 65500 /* leave a few spare for special values */ #endif /* _UFS_UFS_DINODE_H_ */ diff --git a/sys/ufs/ufs/inode.h b/sys/ufs/ufs/inode.h index 81500e10ebb1..dc7e2560d6e3 100644 --- a/sys/ufs/ufs/inode.h +++ b/sys/ufs/ufs/inode.h @@ -97,7 +97,7 @@ struct inode { ino_t i_number; /* The identity of the inode. */ uint32_t i_flag; /* flags, see below */ - int i_effnlink; /* i_nlink when I/O completes */ + int32_t i_effnlink; /* i_nlink when I/O completes */ /* * Side effects; used during directory lookup. @@ -133,7 +133,7 @@ struct inode { uint32_t i_flags; /* Status flags (chflags). */ uint32_t i_uid; /* File owner. */ uint32_t i_gid; /* File group. */ - int16_t i_nlink; /* File link count. */ + int32_t i_nlink; /* File link count. */ uint16_t i_mode; /* IFMT, permissions; see below. */ }; /* @@ -244,6 +244,12 @@ I_IS_UFS2(const struct inode *ip) else \ (ip)->i_din2->d##field = (val); \ } while (0) +#define DIP_SET_NLINK(ip, val) do { \ + KASSERT(ip->i_nlink >= 0, ("%s:%d %s(): setting negative " \ + "nlink value %d for inode %jd\n", __FILE__, __LINE__, \ + __FUNCTION__, (ip)->i_nlink, (ip)->i_number)); \ + DIP_SET(ip, i_nlink, val); \ + } while (0) #define IS_SNAPSHOT(ip) ((ip)->i_flags & SF_SNAPSHOT) #define IS_UFS(vp) ((vp)->v_data != NULL) diff --git a/sys/ufs/ufs/ufs_lookup.c b/sys/ufs/ufs/ufs_lookup.c index b1964addd65d..0beeeed32251 100644 --- a/sys/ufs/ufs/ufs_lookup.c +++ b/sys/ufs/ufs/ufs_lookup.c @@ -1123,7 +1123,7 @@ ufs_dirremove(struct vnode *dvp, struct inode *ip, int flags, int isrmdir) softdep_setup_unlink(dp, ip); } else { ip->i_nlink--; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); } } @@ -1139,7 +1139,7 @@ ufs_dirremove(struct vnode *dvp, struct inode *ip, int flags, int isrmdir) softdep_change_linkcnt(ip); } else { ip->i_nlink++; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); } } @@ -1243,7 +1243,7 @@ ufs_dirrewrite(struct inode *dp, struct inode *oip, ino_t newinum, int newtype, softdep_setup_unlink(dp, oip); } else { oip->i_nlink--; - DIP_SET(oip, i_nlink, oip->i_nlink); + DIP_SET_NLINK(oip, oip->i_nlink); UFS_INODE_SET_FLAG(oip, IN_CHANGE); } @@ -1260,7 +1260,7 @@ ufs_dirrewrite(struct inode *dp, struct inode *oip, ino_t newinum, int newtype, softdep_change_linkcnt(oip); } else { oip->i_nlink++; - DIP_SET(oip, i_nlink, oip->i_nlink); + DIP_SET_NLINK(oip, oip->i_nlink); UFS_INODE_SET_FLAG(oip, IN_CHANGE); } return (error); diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c index 79cca75fc563..ff1f2af7b65b 100644 --- a/sys/ufs/ufs/ufs_vnops.c +++ b/sys/ufs/ufs/ufs_vnops.c @@ -1133,7 +1133,7 @@ ufs_link( ip->i_effnlink++; ip->i_nlink++; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (DOINGSOFTDEP(vp)) softdep_setup_link(VTOI(tdvp), ip); @@ -1146,7 +1146,7 @@ ufs_link( if (error) { ip->i_effnlink--; ip->i_nlink--; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (DOINGSOFTDEP(vp)) softdep_revert_link(VTOI(tdvp), ip); @@ -1528,7 +1528,7 @@ relock: */ fip->i_effnlink++; fip->i_nlink++; - DIP_SET(fip, i_nlink, fip->i_nlink); + DIP_SET_NLINK(fip, fip->i_nlink); UFS_INODE_SET_FLAG(fip, IN_CHANGE); if (DOINGSOFTDEP(fvp)) softdep_setup_link(tdp, fip); @@ -1557,7 +1557,7 @@ relock: if (tdp->i_nlink >= UFS_LINK_MAX) { fip->i_effnlink--; fip->i_nlink--; - DIP_SET(fip, i_nlink, fip->i_nlink); + DIP_SET_NLINK(fip, fip->i_nlink); UFS_INODE_SET_FLAG(fip, IN_CHANGE); if (DOINGSOFTDEP(fvp)) softdep_revert_link(tdp, fip); @@ -1680,11 +1680,11 @@ relock: */ if (!newparent) { tdp->i_nlink--; - DIP_SET(tdp, i_nlink, tdp->i_nlink); + DIP_SET_NLINK(tdp, tdp->i_nlink); UFS_INODE_SET_FLAG(tdp, IN_CHANGE); } tip->i_nlink--; - DIP_SET(tip, i_nlink, tip->i_nlink); + DIP_SET_NLINK(tip, tip->i_nlink); UFS_INODE_SET_FLAG(tip, IN_CHANGE); } } @@ -1719,7 +1719,7 @@ relock: if (tip == NULL) { tdp->i_effnlink++; tdp->i_nlink++; - DIP_SET(tdp, i_nlink, tdp->i_nlink); + DIP_SET_NLINK(tdp, tdp->i_nlink); UFS_INODE_SET_FLAG(tdp, IN_CHANGE); if (DOINGSOFTDEP(tdvp)) softdep_setup_dotdot_link(tdp, fip); @@ -1782,7 +1782,7 @@ unlockout: bad: fip->i_effnlink--; fip->i_nlink--; - DIP_SET(fip, i_nlink, fip->i_nlink); + DIP_SET_NLINK(fip, fip->i_nlink); UFS_INODE_SET_FLAG(fip, IN_CHANGE); if (DOINGSOFTDEP(fvp)) softdep_revert_link(tdp, fip); @@ -2122,7 +2122,7 @@ ufs_mkdir( tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */ ip->i_effnlink = 2; ip->i_nlink = 2; - DIP_SET(ip, i_nlink, 2); + DIP_SET_NLINK(ip, 2); DIP_SET(ip, i_dirdepth, DIP(dp,i_dirdepth) + 1); if (cnp->cn_flags & ISWHITEOUT) { @@ -2137,7 +2137,7 @@ ufs_mkdir( */ dp->i_effnlink++; dp->i_nlink++; - DIP_SET(dp, i_nlink, dp->i_nlink); + DIP_SET_NLINK(dp, dp->i_nlink); UFS_INODE_SET_FLAG(dp, IN_CHANGE); if (DOINGSOFTDEP(dvp)) softdep_setup_mkdir(dp, ip); @@ -2228,7 +2228,7 @@ bad: } else { dp->i_effnlink--; dp->i_nlink--; - DIP_SET(dp, i_nlink, dp->i_nlink); + DIP_SET_NLINK(dp, dp->i_nlink); UFS_INODE_SET_FLAG(dp, IN_CHANGE); /* * No need to do an explicit VOP_TRUNCATE here, vrele will @@ -2236,7 +2236,7 @@ bad: */ ip->i_effnlink = 0; ip->i_nlink = 0; - DIP_SET(ip, i_nlink, 0); + DIP_SET_NLINK(ip, 0); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (DOINGSOFTDEP(tvp)) softdep_revert_mkdir(dp, ip); @@ -2333,11 +2333,11 @@ ufs_rmdir( */ if (!DOINGSOFTDEP(vp)) { dp->i_nlink--; - DIP_SET(dp, i_nlink, dp->i_nlink); + DIP_SET_NLINK(dp, dp->i_nlink); UFS_INODE_SET_FLAG(dp, IN_CHANGE); error = UFS_UPDATE(dvp, 0); ip->i_nlink--; - DIP_SET(ip, i_nlink, ip->i_nlink); + DIP_SET_NLINK(ip, ip->i_nlink); UFS_INODE_SET_FLAG(ip, IN_CHANGE); } cache_vop_rmdir(dvp, vp); @@ -2874,7 +2874,7 @@ ufs_makeinode(int mode, struct vnode *dvp, struct vnode **vpp, tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */ ip->i_effnlink = 1; ip->i_nlink = 1; - DIP_SET(ip, i_nlink, 1); + DIP_SET_NLINK(ip, 1); if (DOINGSOFTDEP(tvp)) softdep_setup_create(VTOI(dvp), ip); if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && @@ -2930,7 +2930,7 @@ bad: */ ip->i_effnlink = 0; ip->i_nlink = 0; - DIP_SET(ip, i_nlink, 0); + DIP_SET_NLINK(ip, 0); UFS_INODE_SET_FLAG(ip, IN_CHANGE); if (DOINGSOFTDEP(tvp)) softdep_revert_create(VTOI(dvp), ip);
