/* $OpenBSD: kvm_file2.c,v 1.57 2022/02/22 17:35:01 deraadt Exp $ */ /* * Copyright (c) 2009 Todd C. Miller * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /*- * Copyright (c) 1989, 1992, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Extended file list interface for kvm. pstat, fstat and netstat are * users of this code, so we've factored it out into a separate module. * Thus, we keep this grunge out of the other kvm applications (i.e., * most other applications are interested only in open/close/read/nlist). */ #define __need_process #include #include #include #include #include #define _KERNEL #include #include #undef _KERNEL #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define _KERNEL #include #include #undef _KERNEL #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET6 #include #include #endif #include #include #include #include #include #include #include #include #include #include #include "kvm_private.h" #include "kvm_file.h" static struct kinfo_file *kvm_deadfile_byfile(kvm_t *, int, int, size_t, int *); static struct kinfo_file *kvm_deadfile_byid(kvm_t *, int, int, size_t, int *); static int fill_file(kvm_t *, struct kinfo_file *, struct file *, u_long, struct vnode *, struct process *, int, pid_t); static int filestat(kvm_t *, struct kinfo_file *, struct vnode *); LIST_HEAD(processlist, process); struct kinfo_file * kvm_getfiles(kvm_t *kd, int op, int arg, size_t esize, int *cnt) { int mib[6], rv; void *filebase; size_t size; if (ISALIVE(kd)) { mib[0] = CTL_KERN; mib[1] = KERN_FILE; mib[2] = op; mib[3] = arg; mib[4] = esize; do { mib[5] = 0; /* find size and alloc buffer */ rv = sysctl(mib, 6, NULL, &size, NULL, 0); if (rv == -1) { if (errno != ESRCH && kd->vmfd != -1) goto deadway; _kvm_syserr(kd, kd->program, "kvm_getfiles"); return (NULL); } size += size / 8; /* add ~10% */ filebase = _kvm_realloc(kd, kd->filebase, size); if (filebase == NULL) return (NULL); kd->filebase = filebase; /* get actual data */ mib[5] = size / esize; rv = sysctl(mib, 6, kd->filebase, &size, NULL, 0); if (rv == -1 && errno != ENOMEM) { _kvm_syserr(kd, kd->program, "kvm_getfiles"); return (NULL); } } while (rv == -1); *cnt = size / esize; return (kd->filebase); } else { if (esize > sizeof(struct kinfo_file)) { _kvm_syserr(kd, kd->program, "kvm_getfiles: unknown fields requested: libkvm out of date?"); return (NULL); } deadway: switch (op) { case KERN_FILE_BYFILE: return (kvm_deadfile_byfile(kd, op, arg, esize, cnt)); break; case KERN_FILE_BYPID: case KERN_FILE_BYUID: return (kvm_deadfile_byid(kd, op, arg, esize, cnt)); break; default: return (NULL); } } } static struct kinfo_file * kvm_deadfile_byfile(kvm_t *kd, int op, int arg, size_t esize, int *cnt) { struct nlist nl[3], *p; size_t buflen; int n = 0; char *where; struct kinfo_file kf; struct file *fp, file; struct filelist filehead; int nfiles; nl[0].n_name = "_filehead"; nl[1].n_name = "_numfiles"; nl[2].n_name = 0; if (kvm_nlist(kd, nl) != 0) { for (p = nl; p->n_type != 0; ++p) ; _kvm_err(kd, kd->program, "%s: no such symbol", p->n_name); return (NULL); } if (KREAD(kd, nl[0].n_value, &filehead)) { _kvm_err(kd, kd->program, "can't read filehead"); return (NULL); } if (KREAD(kd, nl[1].n_value, &nfiles)) { _kvm_err(kd, kd->program, "can't read nfiles"); return (NULL); } where = _kvm_reallocarray(kd, kd->filebase, nfiles, esize); if (where == NULL) return (NULL); kd->filebase = (void *)where; buflen = nfiles * esize; for (fp = LIST_FIRST(&filehead); fp != NULL && esize <= buflen; fp = LIST_NEXT(&file, f_list)) { if (KREAD(kd, (u_long)fp, &file)) { _kvm_err(kd, kd->program, "can't read kfp"); return (NULL); } if (file.f_count == 0) continue; if (arg != 0 && file.f_type != arg) continue; if (fill_file(kd, &kf, &file, (u_long)fp, NULL, NULL, 0, 0) == -1) return (NULL); memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } if (n != nfiles) { _kvm_err(kd, kd->program, "inconsistent nfiles"); return (NULL); } *cnt = n; return (kd->filebase); } static struct kinfo_file * kvm_deadfile_byid(kvm_t *kd, int op, int arg, size_t esize, int *cnt) { size_t buflen; struct nlist nl[4], *np; int n = 0, matched = 0; char *where; struct kinfo_file kf; struct file *fp, file; struct filelist filehead; struct filedesc0 filed0; #define filed filed0.fd_fd struct processlist allprocess; struct process *pr, process; struct ucred ucred; char *filebuf = NULL; int i, nfiles; nl[0].n_name = "_filehead"; nl[1].n_name = "_numfiles"; nl[2].n_name = "_allprocess"; nl[3].n_name = 0; if (kvm_nlist(kd, nl) != 0) { for (np = nl; np->n_type != 0; ++np) ; _kvm_err(kd, kd->program, "%s: no such symbol", np->n_name); return (NULL); } if (KREAD(kd, nl[0].n_value, &filehead)) { _kvm_err(kd, kd->program, "can't read filehead"); return (NULL); } if (KREAD(kd, nl[1].n_value, &nfiles)) { _kvm_err(kd, kd->program, "can't read nfiles"); return (NULL); } if (KREAD(kd, nl[2].n_value, &allprocess)) { _kvm_err(kd, kd->program, "can't read allprocess"); return (NULL); } /* this may be more room than we need but counting is expensive */ where = _kvm_reallocarray(kd, kd->filebase, nfiles + 10, esize); if (where == NULL) return (NULL); kd->filebase = (void *)where; buflen = (nfiles + 10) * esize; if (op != KERN_FILE_BYPID || arg <= 0) matched = 1; for (pr = LIST_FIRST(&allprocess); pr != NULL; pr = LIST_NEXT(&process, ps_list)) { if (KREAD(kd, (u_long)pr, &process)) { _kvm_err(kd, kd->program, "can't read process at %lx", (u_long)pr); goto cleanup; } /* skip system, exiting, embryonic and undead processes */ if (process.ps_flags & (PS_SYSTEM | PS_EMBRYO | PS_EXITING)) continue; if (op == KERN_FILE_BYPID) { /* check if this is the pid we are looking for */ if (arg > 0 && process.ps_pid != (pid_t)arg) continue; matched = 1; } if (KREAD(kd, (u_long)process.ps_ucred, &ucred)) { _kvm_err(kd, kd->program, "can't read ucred at %lx", (u_long)process.ps_ucred); goto cleanup; } process.ps_ucred = &ucred; if (op == KERN_FILE_BYUID && arg >= 0 && process.ps_ucred->cr_uid != (uid_t)arg) { /* not the uid we are looking for */ continue; } if (KREAD(kd, (u_long)process.ps_fd, &filed0)) { _kvm_err(kd, kd->program, "can't read filedesc at %lx", (u_long)process.ps_fd); goto cleanup; } if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles) == (char *)filed.fd_ofiles) { filed.fd_ofiles = filed0.fd_dfiles; filed.fd_ofileflags = filed0.fd_dfileflags; } else { size_t fsize; char *tmp = reallocarray(filebuf, filed.fd_nfiles, OFILESIZE); fsize = filed.fd_nfiles * OFILESIZE; if (tmp == NULL) { _kvm_syserr(kd, kd->program, "realloc ofiles"); goto cleanup; } filebuf = tmp; if (kvm_read(kd, (u_long)filed.fd_ofiles, filebuf, fsize) != fsize) { _kvm_err(kd, kd->program, "can't read fd_ofiles"); goto cleanup; } filed.fd_ofiles = (void *)filebuf; filed.fd_ofileflags = filebuf + (filed.fd_nfiles * sizeof(struct file *)); } process.ps_fd = &filed; if (process.ps_textvp) { if (buflen < esize) goto done; if (fill_file(kd, &kf, NULL, 0, process.ps_textvp, &process, KERN_FILE_TEXT, process.ps_pid) == -1) goto cleanup; memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } if (filed.fd_cdir) { if (buflen < esize) goto done; if (fill_file(kd, &kf, NULL, 0, filed.fd_cdir, &process, KERN_FILE_CDIR, process.ps_pid) == -1) goto cleanup; memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } if (filed.fd_rdir) { if (buflen < esize) goto done; if (fill_file(kd, &kf, NULL, 0, filed.fd_rdir, &process, KERN_FILE_RDIR, process.ps_pid) == -1) goto cleanup; memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } if (process.ps_tracevp) { if (buflen < esize) goto done; if (fill_file(kd, &kf, NULL, 0, process.ps_tracevp, &process, KERN_FILE_TRACE, process.ps_pid) == -1) goto cleanup; memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles || filed.fd_freefile > filed.fd_lastfile + 1) { _kvm_err(kd, kd->program, "filedesc corrupted at %lx for pid %d", (u_long)process.ps_fd, process.ps_pid); goto cleanup; } for (i = 0; i < filed.fd_nfiles; i++) { if (buflen < esize) goto done; if ((fp = filed.fd_ofiles[i]) == NULL) continue; if (KREAD(kd, (u_long)fp, &file)) { _kvm_err(kd, kd->program, "can't read file"); goto cleanup; } if (fill_file(kd, &kf, &file, (u_long)fp, NULL, &process, i, process.ps_pid) == -1) goto cleanup; memcpy(where, &kf, esize); where += esize; buflen -= esize; n++; } } if (!matched) { errno = ESRCH; goto cleanup; } done: *cnt = n; free(filebuf); return (kd->filebase); cleanup: free(filebuf); return (NULL); } static int fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr, struct vnode *vp, struct process *pr, int fd, pid_t pid) { struct ucred f_cred; memset(kf, 0, sizeof(*kf)); kf->fd_fd = fd; /* might not really be an fd */ if (fp != NULL) { /* Fill in f_cred */ if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) { _kvm_err(kd, kd->program, "can't read f_cred"); return (-1); } kf->f_fileaddr = PTRTOINT64(fpaddr); kf->f_flag = fp->f_flag; kf->f_iflags = fp->f_iflags; kf->f_type = fp->f_type; kf->f_count = fp->f_count; kf->f_ucred = PTRTOINT64(fp->f_cred); kf->f_uid = f_cred.cr_uid; kf->f_gid = f_cred.cr_gid; kf->f_ops = PTRTOINT64(fp->f_ops); kf->f_offset = fp->f_offset; kf->f_data = PTRTOINT64(fp->f_data); kf->f_usecount = 0; kf->f_rxfer = fp->f_rxfer; kf->f_rwfer = fp->f_wxfer; kf->f_seek = fp->f_seek; kf->f_rbytes = fp->f_rbytes; kf->f_wbytes = fp->f_wbytes; } else if (vp != NULL) { /* fake it */ kf->f_type = DTYPE_VNODE; kf->f_flag = FREAD; if (fd == KERN_FILE_TRACE) kf->f_flag |= FWRITE; kf->f_data = PTRTOINT64(vp); } /* information about the object associated with this file */ switch (kf->f_type) { case DTYPE_VNODE: { struct vnode vbuf; if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) { _kvm_err(kd, kd->program, "can't read vnode"); return (-1); } vp = &vbuf; kf->v_un = PTRTOINT64(vp->v_un.vu_socket); kf->v_type = vp->v_type; kf->v_tag = vp->v_tag; kf->v_flag = vp->v_flag; kf->v_data = PTRTOINT64(vp->v_data); kf->v_mount = PTRTOINT64(vp->v_mount); if (vp->v_mount != NULL) { struct mount mount; if (KREAD(kd, (u_long)vp->v_mount, &mount)) { _kvm_err(kd, kd->program, "can't read v_mount"); return (-1); } strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname, sizeof(kf->f_mntonname)); } /* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */ filestat(kd, kf, vp); break; } case DTYPE_SOCKET: { struct socket sock; struct sosplice ssp; struct protosw protosw; struct domain domain; if (KREAD(kd, (u_long)fp->f_data, &sock)) { _kvm_err(kd, kd->program, "can't read socket"); return (-1); } kf->so_type = sock.so_type; kf->so_state = sock.so_state; kf->so_pcb = PTRTOINT64(sock.so_pcb); if (KREAD(kd, (u_long)sock.so_proto, &protosw)) { _kvm_err(kd, kd->program, "can't read protosw"); return (-1); } kf->so_protocol = protosw.pr_protocol; if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) { _kvm_err(kd, kd->program, "can't read domain"); return (-1); } kf->so_family = domain.dom_family; kf->so_rcv_cc = sock.so_rcv.sb_cc; kf->so_snd_cc = sock.so_snd.sb_cc; if (sock.so_sp) { if (KREAD(kd, (u_long)sock.so_sp, &ssp)) { _kvm_err(kd, kd->program, "can't read splice"); return (-1); } if (ssp.ssp_socket) { kf->so_splice = PTRTOINT64(ssp.ssp_socket); kf->so_splicelen = ssp.ssp_len; } else if (ssp.ssp_soback) { kf->so_splicelen = -1; } } if (!sock.so_pcb) break; switch (kf->so_family) { case AF_INET: { struct inpcb inpcb; if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { _kvm_err(kd, kd->program, "can't read inpcb"); return (-1); } kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); kf->inp_lport = inpcb.inp_lport; kf->inp_laddru[0] = inpcb.inp_laddr.s_addr; kf->inp_fport = inpcb.inp_fport; kf->inp_faddru[0] = inpcb.inp_faddr.s_addr; kf->inp_rtableid = inpcb.inp_rtableid; if (sock.so_type == SOCK_RAW) kf->inp_proto = inpcb.inp_ip.ip_p; if (protosw.pr_protocol == IPPROTO_TCP) { struct tcpcb tcpcb; if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { _kvm_err(kd, kd->program, "can't read tcpcb"); return (-1); } kf->t_rcv_wnd = tcpcb.rcv_wnd; kf->t_snd_wnd = tcpcb.snd_wnd; kf->t_snd_cwnd = tcpcb.snd_cwnd; kf->t_state = tcpcb.t_state; } break; } case AF_INET6: { struct inpcb inpcb; #define s6_addr32 __u6_addr.__u6_addr32 if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) { _kvm_err(kd, kd->program, "can't read inpcb"); return (-1); } kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb); kf->inp_lport = inpcb.inp_lport; kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0]; kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1]; kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2]; kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3]; kf->inp_fport = inpcb.inp_fport; kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0]; kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1]; kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2]; kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3]; kf->inp_rtableid = inpcb.inp_rtableid; if (sock.so_type == SOCK_RAW) kf->inp_proto = inpcb.inp_ipv6.ip6_nxt; if (protosw.pr_protocol == IPPROTO_TCP) { struct tcpcb tcpcb; if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) { _kvm_err(kd, kd->program, "can't read tcpcb"); return (-1); } kf->t_rcv_wnd = tcpcb.rcv_wnd; kf->t_snd_wnd = tcpcb.snd_wnd; kf->t_snd_cwnd = tcpcb.snd_cwnd; kf->t_state = tcpcb.t_state; } break; } case AF_UNIX: { struct unpcb unpcb; if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) { _kvm_err(kd, kd->program, "can't read unpcb"); return (-1); } kf->f_msgcount = unpcb.unp_msgcount; kf->unp_conn = PTRTOINT64(unpcb.unp_conn); kf->unp_refs = PTRTOINT64( SLIST_FIRST(&unpcb.unp_refs)); kf->unp_nextref = PTRTOINT64( SLIST_NEXT(&unpcb, unp_nextref)); kf->v_un = PTRTOINT64(unpcb.unp_vnode); if (unpcb.unp_addr != NULL) { struct mbuf mb; struct sockaddr_un un; if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) { _kvm_err(kd, kd->program, "can't read sockaddr_un mbuf"); return (-1); } if (KREAD(kd, (u_long)mb.m_data, &un)) { _kvm_err(kd, kd->program, "can't read sockaddr_un"); return (-1); } kf->unp_addr = PTRTOINT64(unpcb.unp_addr); memcpy(kf->unp_path, un.sun_path, un.sun_len - offsetof(struct sockaddr_un,sun_path)); } break; } } break; } case DTYPE_PIPE: { struct pipe pipe; if (KREAD(kd, (u_long)fp->f_data, &pipe)) { _kvm_err(kd, kd->program, "can't read pipe"); return (-1); } kf->pipe_peer = PTRTOINT64(pipe.pipe_peer); kf->pipe_state = pipe.pipe_state; break; } case DTYPE_KQUEUE: { struct kqueue kqi; if (KREAD(kd, (u_long)fp->f_data, &kqi)) { _kvm_err(kd, kd->program, "can't read kqi"); return (-1); } kf->kq_count = kqi.kq_count; kf->kq_state = kqi.kq_state; break; } } /* per-process information for KERN_FILE_BY[PU]ID */ if (pr != NULL) { kf->p_pid = pid; kf->p_uid = pr->ps_ucred->cr_uid; kf->p_gid = pr->ps_ucred->cr_gid; kf->p_tid = -1; strlcpy(kf->p_comm, pr->ps_comm, sizeof(kf->p_comm)); if (pr->ps_fd != NULL) kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd]; } return (0); } mode_t _kvm_getftype(enum vtype v_type) { mode_t ftype = 0; switch (v_type) { case VREG: ftype = S_IFREG; break; case VDIR: ftype = S_IFDIR; break; case VBLK: ftype = S_IFBLK; break; case VCHR: ftype = S_IFCHR; break; case VLNK: ftype = S_IFLNK; break; case VSOCK: ftype = S_IFSOCK; break; case VFIFO: ftype = S_IFIFO; break; case VNON: case VBAD: break; } return (ftype); } static int ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { struct inode inode; struct ufs1_dinode di1; if (KREAD(kd, (u_long)VTOI(vp), &inode)) { _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); return (-1); } if (KREAD(kd, (u_long)inode.i_din1, &di1)) { _kvm_err(kd, kd->program, "can't read dinode at %p", inode.i_din1); return (-1); } inode.i_din1 = &di1; kf->va_fsid = inode.i_dev & 0xffff; kf->va_fileid = (long)inode.i_number; kf->va_mode = inode.i_ffs1_mode; kf->va_size = inode.i_ffs1_size; kf->va_rdev = inode.i_ffs1_rdev; kf->va_nlink = inode.i_ffs1_nlink; return (0); } static int ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { struct inode inode; struct ext2fs_dinode e2di; if (KREAD(kd, (u_long)VTOI(vp), &inode)) { _kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp)); return (-1); } if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) { _kvm_err(kd, kd->program, "can't read dinode at %p", inode.i_e2din); return (-1); } inode.i_e2din = &e2di; kf->va_fsid = inode.i_dev & 0xffff; kf->va_fileid = (long)inode.i_number; kf->va_mode = inode.i_e2fs_mode; kf->va_size = inode.i_e2fs_size; kf->va_rdev = 0; /* XXX */ kf->va_nlink = inode.i_e2fs_nlink; return (0); } static int msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { struct denode de; struct msdosfsmount mp; if (KREAD(kd, (u_long)VTODE(vp), &de)) { _kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp)); return (-1); } if (KREAD(kd, (u_long)de.de_pmp, &mp)) { _kvm_err(kd, kd->program, "can't read mount struct at %p", de.de_pmp); return (-1); } kf->va_fsid = de.de_dev & 0xffff; kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */ kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type); kf->va_size = de.de_FileSize; kf->va_rdev = 0; /* msdosfs doesn't support device files */ kf->va_nlink = 1; return (0); } static int nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { struct nfsnode nfsnode; if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) { _kvm_err(kd, kd->program, "can't read nfsnode at %p", VTONFS(vp)); return (-1); } kf->va_fsid = nfsnode.n_vattr.va_fsid; kf->va_fileid = nfsnode.n_vattr.va_fileid; kf->va_size = nfsnode.n_size; kf->va_rdev = nfsnode.n_vattr.va_rdev; kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type); kf->va_nlink = nfsnode.n_vattr.va_nlink; return (0); } static int spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { struct specinfo specinfo; struct vnode parent; if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) { _kvm_err(kd, kd->program, "can't read specinfo at %p", vp->v_specinfo); return (-1); } vp->v_specinfo = &specinfo; if (KREAD(kd, (u_long)vp->v_specparent, &parent)) { _kvm_err(kd, kd->program, "can't read parent vnode at %p", vp->v_specparent); return (-1); } if (ufs_filestat(kd, kf, vp)) return (-1); return (0); } static int filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) { int ret = 0; if (vp->v_type != VNON && vp->v_type != VBAD) { switch (vp->v_tag) { case VT_UFS: case VT_MFS: ret = ufs_filestat(kd, kf, vp); break; case VT_NFS: ret = nfs_filestat(kd, kf, vp); break; case VT_EXT2FS: ret = ext2fs_filestat(kd, kf, vp); break; case VT_ISOFS: ret = _kvm_stat_cd9660(kd, kf, vp); break; case VT_MSDOSFS: ret = msdos_filestat(kd, kf, vp); break; case VT_UDF: ret = _kvm_stat_udf(kd, kf, vp); break; case VT_NTFS: ret = _kvm_stat_ntfs(kd, kf, vp); break; case VT_NON: if (vp->v_flag & VCLONE) ret = spec_filestat(kd, kf, vp); break; default: ret = -1; break; } } return (ret); }