Date: Thu, 13 Jul 2023 01:18:21 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 3905309dfeeb - main - fdescfs: add a mount option rdlnk Message-ID: <202307130118.36D1IL2k005032@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=3905309dfeeb89f03b09c347f7ac0a863faa3975 commit 3905309dfeeb89f03b09c347f7ac0a863faa3975 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2023-07-11 05:03:49 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2023-07-13 01:14:20 +0000 fdescfs: add a mount option rdlnk which changes /dev/fd/N files types to symbolic link with the behavior of symbolic links. PR: 272127 Reported by: Peter Eriksson <pen@lysator.liu.se> Reviewed by: dchagin Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D40969 --- sys/fs/fdescfs/fdesc.h | 1 + sys/fs/fdescfs/fdesc_vfsops.c | 2 ++ sys/fs/fdescfs/fdesc_vnops.c | 15 ++++++++++----- 3 files changed, 13 insertions(+), 5 deletions(-) diff --git a/sys/fs/fdescfs/fdesc.h b/sys/fs/fdescfs/fdesc.h index 94682f42cdb3..b51ac9f32ac1 100644 --- a/sys/fs/fdescfs/fdesc.h +++ b/sys/fs/fdescfs/fdesc.h @@ -43,6 +43,7 @@ #define FMNT_UNMOUNTF 0x01 #define FMNT_LINRDLNKF 0x02 #define FMNT_NODUP 0x04 +#define FMNT_RDLNKF 0x08 struct fdescmount { struct vnode *f_root; /* Root node */ diff --git a/sys/fs/fdescfs/fdesc_vfsops.c b/sys/fs/fdescfs/fdesc_vfsops.c index 2961c3bf6224..d0d518245e92 100644 --- a/sys/fs/fdescfs/fdesc_vfsops.c +++ b/sys/fs/fdescfs/fdesc_vfsops.c @@ -100,6 +100,8 @@ fdesc_mount(struct mount *mp) fmp->flags = 0; if (vfs_getopt(mp->mnt_optnew, "linrdlnk", NULL, NULL) == 0) fmp->flags |= FMNT_LINRDLNKF; + if (vfs_getopt(mp->mnt_optnew, "rdlnk", NULL, NULL) == 0) + fmp->flags |= FMNT_RDLNKF; if (vfs_getopt(mp->mnt_optnew, "nodup", NULL, NULL) == 0) fmp->flags |= FMNT_NODUP; error = fdesc_allocvp(Froot, -1, FD_ROOT, mp, &rvp); diff --git a/sys/fs/fdescfs/fdesc_vnops.c b/sys/fs/fdescfs/fdesc_vnops.c index 1c4b6d0c6cdb..9aa844360256 100644 --- a/sys/fs/fdescfs/fdesc_vnops.c +++ b/sys/fs/fdescfs/fdesc_vnops.c @@ -190,8 +190,12 @@ loop: fd->fd_type = ftype; fd->fd_fd = fd_fd; fd->fd_ix = ix; - if (ftype == Fdesc && fmp->flags & FMNT_LINRDLNKF) - vp->v_vflag |= VV_READLINK; + if (ftype == Fdesc) { + if ((fmp->flags & FMNT_RDLNKF) != 0) + vp->v_type = VLNK; + else if ((fmp->flags & FMNT_LINRDLNKF) != 0) + vp->v_vflag |= VV_READLINK; + } error = insmntque1(vp, mp); if (error != 0) { vgone(vp); @@ -457,7 +461,8 @@ fdesc_getattr(struct vop_getattr_args *ap) break; case Fdesc: - vap->va_type = (vp->v_vflag & VV_READLINK) == 0 ? VCHR : VLNK; + vap->va_type = (VFSTOFDESC(vp->v_mount)->flags & + (FMNT_RDLNKF | FMNT_LINRDLNKF)) == 0 ? VCHR : VLNK; vap->va_nlink = 1; vap->va_size = 0; vap->va_rdev = makedev(0, vap->va_fileid); @@ -575,8 +580,8 @@ fdesc_readdir(struct vop_readdir_args *ap) break; dp->d_namlen = sprintf(dp->d_name, "%d", fcnt); dp->d_reclen = UIO_MX; - dp->d_type = (fmp->flags & FMNT_LINRDLNKF) == 0 ? - DT_CHR : DT_LNK; + dp->d_type = (fmp->flags & (FMNT_RDLNKF | + FMNT_LINRDLNKF)) == 0 ? DT_CHR : DT_LNK; dp->d_fileno = i + FD_DESC; dirent_terminate(dp); break;
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