/* ARGSUSED */ int ext2fs_getattr(void *v) { struct vop_getattr_args /* { struct vnode *a_vp; struct vattr *a_vap; kauth_cred_t a_cred; } */ *ap = v; struct vnode *vp = ap->a_vp; struct inode *ip = VTOI(vp); struct vattr *vap = ap->a_vap; EXT2FS_ITIMES(ip, NULL, NULL, NULL); /* * Copy from inode table */ vap->va_fsid = ip->i_dev; vap->va_fileid = ip->i_number; vap->va_mode = ip->i_e2fs_mode & ALLPERMS; vap->va_nlink = ip->i_e2fs_nlink; vap->va_uid = ip->i_uid; vap->va_gid = ip->i_gid; vap->va_rdev = (dev_t)fs2h32(ip->i_din.e2fs_din->e2di_rdev); vap->va_size = vp->v_size; vap->va_atime.tv_sec = ip->i_e2fs_atime; vap->va_atime.tv_nsec = 0; vap->va_mtime.tv_sec = ip->i_e2fs_mtime; vap->va_mtime.tv_nsec = 0; vap->va_ctime.tv_sec = ip->i_e2fs_ctime; vap->va_ctime.tv_nsec = 0; #ifdef EXT2FS_SYSTEM_FLAGS vap->va_flags = (ip->i_e2fs_flags & EXT2_APPEND) ? SF_APPEND : 0; vap->va_flags |= (ip->i_e2fs_flags & EXT2_IMMUTABLE) ? SF_IMMUTABLE : 0; #else vap->va_flags = (ip->i_e2fs_flags & EXT2_APPEND) ? UF_APPEND : 0; vap->va_flags |= (ip->i_e2fs_flags & EXT2_IMMUTABLE) ? UF_IMMUTABLE : 0; #endif vap->va_gen = ip->i_e2fs_gen; /* this doesn't belong here */ if (vp->v_type == VBLK) vap->va_blocksize = BLKDEV_IOSIZE; else if (vp->v_type == VCHR) vap->va_blocksize = MAXBSIZE; else vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; vap->va_bytes = dbtob((u_quad_t)ip->i_e2fs_nblock); vap->va_type = vp->v_type; vap->va_filerev = ip->i_modrev; return (0); }
/* * Update the access, modified, and inode change times as specified by the * IACCESS, IUPDATE, and ICHANGE flags respectively. The IMODIFIED flag is * used to specify that the inode needs to be updated but that the times have * already been set. The access and modified times are taken from the second * and third parameters; the inode change time is always taken from the current * time. If waitfor is set, then wait for the disk write of the inode to * complete. */ int ext2fs_update(struct inode *ip, int waitfor) { struct m_ext2fs *fs; struct buf *bp; int error; caddr_t cp; if (ITOV(ip)->v_mount->mnt_flag & MNT_RDONLY) return (0); EXT2FS_ITIMES(ip); if ((ip->i_flag & IN_MODIFIED) == 0) return (0); ip->i_flag &= ~IN_MODIFIED; fs = ip->i_e2fs; error = bread(ip->i_devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)), (int)fs->e2fs_bsize, &bp); if (error) { brelse(bp); return (error); } ip->i_flag &= ~(IN_MODIFIED); cp = (caddr_t)bp->b_data + (ino_to_fsbo(fs, ip->i_number) * EXT2_DINODE_SIZE(fs)); /* * See note about 16-bit UID/GID limitation in ext2fs_vget(). Now * that we are about to write the inode, construct the split UID and * GID fields out of the two 32-bit fields we kept in memory. */ ip->i_e2fs_uid_low = (u_int16_t)ip->i_e2fs_uid; ip->i_e2fs_gid_low = (u_int16_t)ip->i_e2fs_gid; ip->i_e2fs_uid_high = ip->i_e2fs_uid >> 16; ip->i_e2fs_gid_high = ip->i_e2fs_gid >> 16; e2fs_isave(fs, ip->i_e2din, (struct ext2fs_dinode *)cp); if (waitfor) return (bwrite(bp)); else { bdwrite(bp); return (0); } }
/* * Set attribute vnode op. called from several syscalls */ int ext2fs_setattr(void *v) { struct vop_setattr_args *ap = v; struct vattr *vap = ap->a_vap; struct vnode *vp = ap->a_vp; struct inode *ip = VTOI(vp); struct ucred *cred = ap->a_cred; struct proc *p = ap->a_p; int error; /* * Check for unsettable attributes. */ if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { return (EINVAL); } if (vap->va_flags != VNOVAL) { if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS); if (cred->cr_uid != ip->i_e2fs_uid && (error = suser_ucred(cred))) return (error); #ifdef EXT2FS_SYSTEM_FLAGS if (cred->cr_uid == 0) { if ((ip->i_e2fs_flags & (EXT2_APPEND | EXT2_IMMUTABLE)) && securelevel > 0) return (EPERM); ip->i_e2fs_flags &= ~(EXT2_APPEND | EXT2_IMMUTABLE); ip->i_e2fs_flags |= (vap->va_flags & SF_APPEND) ? EXT2_APPEND : 0 | (vap->va_flags & SF_IMMUTABLE) ? EXT2_IMMUTABLE: 0; } else { return (EPERM); } #else ip->i_e2fs_flags &= ~(EXT2_APPEND | EXT2_IMMUTABLE); ip->i_e2fs_flags |= (vap->va_flags & UF_APPEND) ? EXT2_APPEND : 0 | (vap->va_flags & UF_IMMUTABLE) ? EXT2_IMMUTABLE: 0; #endif ip->i_flag |= IN_CHANGE; if (vap->va_flags & (IMMUTABLE | APPEND)) return (0); } if (ip->i_e2fs_flags & (EXT2_APPEND | EXT2_IMMUTABLE)) return (EPERM); /* * Go through the fields and update iff not VNOVAL. */ if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS); error = ext2fs_chown(vp, vap->va_uid, vap->va_gid, cred, p); if (error) return (error); } if (vap->va_size != VNOVAL) { /* * Disallow write attempts on read-only file systems; * unless the file is a socket, fifo, or a block or * character device resident on the file system. */ switch (vp->v_type) { case VDIR: return (EISDIR); case VLNK: case VREG: if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS); default: break; } error = ext2fs_truncate(ip, vap->va_size, 0, cred); if (error) return (error); } if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS); if (cred->cr_uid != ip->i_e2fs_uid && (error = suser_ucred(cred)) && ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || (error = VOP_ACCESS(vp, VWRITE, cred, p)))) return (error); if (vap->va_mtime.tv_sec != VNOVAL) ip->i_flag |= IN_CHANGE | IN_UPDATE; if (vap->va_atime.tv_sec != VNOVAL) { if (!(vp->v_mount->mnt_flag & MNT_NOATIME) || (ip->i_flag & (IN_CHANGE | IN_UPDATE))) ip->i_flag |= IN_ACCESS; } EXT2FS_ITIMES(ip); if (vap->va_mtime.tv_sec != VNOVAL) ip->i_e2fs_mtime = vap->va_mtime.tv_sec; if (vap->va_atime.tv_sec != VNOVAL) ip->i_e2fs_atime = vap->va_atime.tv_sec; error = ext2fs_update(ip, 1); if (error) return (error); } error = 0; if (vap->va_mode != (mode_t)VNOVAL) { if (vp->v_mount->mnt_flag & MNT_RDONLY) return (EROFS); error = ext2fs_chmod(vp, (int)vap->va_mode, cred, p); } return (error); }