/* $NetBSD: fstat.c,v 1.117 2022/10/28 05:27:16 ozaki-r Exp $ */ /*- * Copyright (c) 1988, 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. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1988, 1993\ The Regents of the University of California. All rights reserved."); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)fstat.c 8.3 (Berkeley) 5/2/95"; #else __RCSID("$NetBSD: fstat.c,v 1.117 2022/10/28 05:27:16 ozaki-r Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define _KERNEL #include #undef _KERNEL #define _KERNEL #include #include #include #undef _KERNEL #define NFS #include #include #include #include #undef NFS #include #include #define _KERNEL #include #undef _KERNEL #define _KERNEL #include #undef _KERNEL #include #include #include #include #include #ifdef INET6 #include #include #include #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fstat.h" #define TEXT -1 #define CDIR -2 #define RDIR -3 #define TRACE -4 typedef struct devs { struct devs *next; long fsid; ino_t ino; const char *name; } DEVS; static DEVS *devs; static int fsflg, /* show files on same filesystem as file(s) argument */ pflg, /* show files open by a particular pid */ uflg; /* show files open by a particular (effective) user */ static int checkfile; /* true if restricting to particular files or filesystems */ static int nflg; /* (numerical) display f.s. and rdev as dev_t */ static int Aflg; /* prefix with address of file structure */ static int Oflg; /* print offset instead of size */ int vflg; /* display errors in locating kernel data objects etc... */ static fdfile_t **ofiles; /* buffer of pointers to file structures */ static int fstat_maxfiles; #define ALLOC_OFILES(d) \ if ((d) > fstat_maxfiles) { \ size_t len = (d) * sizeof(fdfile_t *); \ free(ofiles); \ ofiles = malloc(len); \ if (ofiles == NULL) { \ err(1, "malloc(%zu)", len); \ } \ fstat_maxfiles = (d); \ } kvm_t *kd; static const char *const dtypes[] = { DTYPE_NAMES }; static void dofiles(struct kinfo_proc2 *); static int ext2fs_filestat(struct vnode *, struct filestat *); static int getfname(const char *); static void getinetproto(char *, size_t, int); static void getatproto(char *, size_t, int); static char *getmnton(struct mount *); static const char *layer_filestat(struct vnode *, struct filestat *); static int msdosfs_filestat(struct vnode *, struct filestat *); static int nfs_filestat(struct vnode *, struct filestat *); static const char *inet_addrstr(char *, size_t, const struct in_addr *, uint16_t, bool); #ifdef INET6 static const char *inet6_addrstr(char *, size_t, const struct in6_addr *, uint16_t, bool); #endif static const char *at_addrstr(char *, size_t, const struct sockaddr_at *); static void socktrans(struct file *, struct socket *, int); static void misctrans(struct file *, int); static int ufs_filestat(struct vnode *, struct filestat *); static void usage(void) __dead; static const char *vfilestat(struct vnode *, struct filestat *); static void vtrans(struct file *, struct vnode *, int, int, long); static void ftrans(fdfile_t *, int); static void ptrans(struct file *, struct pipe *, int); static void kdriver_init(void); static void check_privs(void); int main(int argc, char **argv) { struct passwd *passwd; struct kinfo_proc2 *p, *plast; int arg, ch, what; char *memf, *nlistf; char buf[_POSIX2_LINE_MAX]; int cnt; gid_t egid = getegid(); (void)setegid(getgid()); arg = 0; what = KERN_PROC_ALL; nlistf = memf = NULL; while ((ch = getopt(argc, argv, "fnAOp:u:vN:M:")) != -1) switch((char)ch) { case 'f': fsflg = 1; break; case 'M': memf = optarg; break; case 'N': nlistf = optarg; break; case 'n': nflg = 1; break; case 'A': Aflg = 1; break; case 'O': Oflg = 1; break; case 'p': if (pflg++) usage(); if (!isdigit((unsigned char)*optarg)) { warnx("-p requires a process id"); usage(); } what = KERN_PROC_PID; arg = atoi(optarg); break; case 'u': if (uflg++) usage(); if (!(passwd = getpwnam(optarg))) { errx(1, "%s: unknown uid", optarg); } what = KERN_PROC_UID; arg = passwd->pw_uid; break; case 'v': vflg = 1; break; case '?': default: usage(); } check_privs(); kdriver_init(); if (*(argv += optind)) { for (; *argv; ++argv) { if (getfname(*argv)) checkfile = 1; } if (!checkfile) /* file(s) specified, but none accessible */ exit(1); } ALLOC_OFILES(256); /* reserve space for file pointers */ if (fsflg && !checkfile) { /* -f with no files means use wd */ if (getfname(".") == 0) exit(1); checkfile = 1; } /* * Discard setgid privileges. If not the running kernel, we toss * them away totally so that bad guys can't print interesting stuff * from kernel memory, otherwise switch back to kmem for the * duration of the kvm_openfiles() call. */ if (nlistf != NULL || memf != NULL) (void)setgid(getgid()); else (void)setegid(egid); if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) errx(1, "%s", buf); /* get rid of it now anyway */ if (nlistf == NULL && memf == NULL) (void)setgid(getgid()); if ((p = kvm_getproc2(kd, what, arg, sizeof *p, &cnt)) == NULL) { errx(1, "%s", kvm_geterr(kd)); } if (Aflg) (void)printf("%-*s ", 2*(int)(sizeof(void*)), "ADDR"); if (nflg) (void)printf( "USER CMD PID FD DEV INUM MODE %s R/W", Oflg ? " OFFS" : "SZ|DV" ); else (void)printf( "USER CMD PID FD MOUNT INUM MODE %s R/W", Oflg ? " OFFS" : "SZ|DV" ); if (checkfile && fsflg == 0) (void)printf(" NAME\n"); else (void)putchar('\n'); for (plast = &p[cnt]; p < plast; ++p) { if (p->p_stat == SZOMB) continue; dofiles(p); } return 0; } static void check_privs(void) { int expaddr; size_t expsize = sizeof(expaddr); const char *expname = "kern.expose_address"; if (geteuid() == 0) return; if (sysctlbyname(expname, &expaddr, &expsize, NULL, 0) == -1) err(EXIT_FAILURE, "Can't get sysctl `%s'", expname); if (expaddr == 0) errx(EXIT_FAILURE, "This program does not work without " "sysctl `%s' being set", expname); } static const char *Uname, *Comm; pid_t Pid; #define PREFIX(i) (void)printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \ switch(i) { \ case TEXT: \ (void)printf(" text"); \ break; \ case CDIR: \ (void)printf(" wd"); \ break; \ case RDIR: \ (void)printf(" root"); \ break; \ case TRACE: \ (void)printf(" tr"); \ break; \ default: \ (void)printf(" %4d", i); \ break; \ } static struct kinfo_drivers *kdriver; static size_t kdriverlen; static int kdriver_comp(const void *a, const void *b) { const struct kinfo_drivers *ka = a; const struct kinfo_drivers *kb = b; int kac = ka->d_cmajor == -1 ? 0 : ka->d_cmajor; int kbc = kb->d_cmajor == -1 ? 0 : kb->d_cmajor; int kab = ka->d_bmajor == -1 ? 0 : ka->d_bmajor; int kbb = kb->d_bmajor == -1 ? 0 : kb->d_bmajor; int c = kac - kbc; if (c == 0) return kab - kbb; else return c; } static const char * kdriver_search(int type, dev_t num) { struct kinfo_drivers k, *kp; static char buf[64]; if (nflg) goto out; if (type == VBLK) { k.d_bmajor = num; k.d_cmajor = -1; } else { k.d_bmajor = -1; k.d_cmajor = num; } kp = bsearch(&k, kdriver, kdriverlen, sizeof(*kdriver), kdriver_comp); if (kp) return kp->d_name; out: snprintf(buf, sizeof(buf), "%llu", (unsigned long long)num); return buf; } static void kdriver_init(void) { size_t sz; int error; static const int name[2] = { CTL_KERN, KERN_DRIVERS }; error = sysctl(name, __arraycount(name), NULL, &sz, NULL, 0); if (error == -1) { warn("sysctl kern.drivers"); return; } if (sz % sizeof(*kdriver)) { warnx("bad size %zu for kern.drivers", sz); return; } kdriver = malloc(sz); if (kdriver == NULL) { warn("malloc"); return; } error = sysctl(name, __arraycount(name), kdriver, &sz, NULL, 0); if (error == -1) { warn("sysctl kern.drivers"); return; } kdriverlen = sz / sizeof(*kdriver); qsort(kdriver, kdriverlen, sizeof(*kdriver), kdriver_comp); #ifdef DEBUG for (size_t i = 0; i < kdriverlen; i++) printf("%d %d %s\n", kdriver[i].d_cmajor, kdriver[i].d_bmajor, kdriver[i].d_name); #endif } /* * print open files attributed to this process */ static void dofiles(struct kinfo_proc2 *p) { int i; struct filedesc filed; struct cwdinfo cwdi; struct fdtab dt; Uname = user_from_uid(p->p_uid, 0); Pid = p->p_pid; Comm = p->p_comm; if (p->p_fd == 0 || p->p_cwdi == 0) return; if (!KVM_READ(p->p_fd, &filed, sizeof (filed))) { warnx("can't read filedesc at %p for pid %d", (void *)(uintptr_t)p->p_fd, Pid); return; } if (filed.fd_lastfile == -1) return; if (!KVM_READ(p->p_cwdi, &cwdi, sizeof(cwdi))) { warnx("can't read cwdinfo at %p for pid %d", (void *)(uintptr_t)p->p_cwdi, Pid); return; } if (!KVM_READ(filed.fd_dt, &dt, sizeof(dt))) { warnx("can't read dtab at %p for pid %d", filed.fd_dt, Pid); return; } if ((unsigned)filed.fd_lastfile >= dt.dt_nfiles || filed.fd_freefile > filed.fd_lastfile + 1) { dprintf("filedesc corrupted at %p for pid %d", (void *)(uintptr_t)p->p_fd, Pid); return; } /* * root directory vnode, if one */ if (cwdi.cwdi_rdir) vtrans(NULL, cwdi.cwdi_rdir, RDIR, FREAD, (long)cwdi.cwdi_rdir); /* * current working directory vnode */ vtrans(NULL, cwdi.cwdi_cdir, CDIR, FREAD, (long)cwdi.cwdi_cdir); #if 0 /* * Disable for now, since p->p_tracep appears to point to a ktr_desc * * ktrace vnode, if one */ if (p->p_tracep) ftrans(p->p_tracep, TRACE); #endif /* * open files */ #define FPSIZE (sizeof (fdfile_t *)) ALLOC_OFILES(filed.fd_lastfile+1); if (!KVM_READ(&filed.fd_dt->dt_ff, ofiles, (filed.fd_lastfile+1) * FPSIZE)) { dprintf("can't read file structures at %p for pid %d", &filed.fd_dt->dt_ff, Pid); return; } for (i = 0; i <= filed.fd_lastfile; i++) { if (ofiles[i] == NULL) continue; ftrans(ofiles[i], i); } } static void ftrans(fdfile_t *fp, int i) { struct file file; fdfile_t fdfile; if (!KVM_READ(fp, &fdfile, sizeof(fdfile))) { dprintf("can't read file %d at %p for pid %d", i, fp, Pid); return; } if (fdfile.ff_file == NULL) { dprintf("null ff_file for %d at %p for pid %d", i, fp, Pid); return; } if (!KVM_READ(fdfile.ff_file, &file, sizeof(file))) { dprintf("can't read file %d at %p for pid %d", i, fdfile.ff_file, Pid); return; } if (Aflg && file.f_type != DTYPE_VNODE && checkfile == 0) (void)printf("%*lx ", 2*(int)(sizeof(void*)), (long)fdfile.ff_file); switch (file.f_type) { case DTYPE_VNODE: vtrans(&file, file.f_data, i, file.f_flag, (long)fdfile.ff_file); break; case DTYPE_SOCKET: socktrans(&file, file.f_data, i); break; case DTYPE_PIPE: if (checkfile == 0) ptrans(&file, file.f_data, i); break; case DTYPE_MISC: case DTYPE_KQUEUE: case DTYPE_CRYPTO: case DTYPE_MQUEUE: case DTYPE_SEM: if (checkfile == 0) misctrans(&file, i); break; default: dprintf("unknown file type %d for file %d of pid %d", file.f_type, i, Pid); break; } } static const char dead[] = "dead"; static const char *vnode_tag[] = { VNODE_TAGS }; static const char * vfilestat(struct vnode *vp, struct filestat *fsp) { const char *badtype = NULL; if (vp->v_type == VNON) badtype = "none"; else if (vp->v_type == VBAD) badtype = "bad"; else switch (vp->v_tag) { case VT_NON: badtype = dead; break; case VT_UFS: case VT_LFS: case VT_MFS: if (!ufs_filestat(vp, fsp)) badtype = "error"; break; case VT_MSDOSFS: if (!msdosfs_filestat(vp, fsp)) badtype = "error"; break; case VT_NFS: if (!nfs_filestat(vp, fsp)) badtype = "error"; break; case VT_EXT2FS: if (!ext2fs_filestat(vp, fsp)) badtype = "error"; break; case VT_ISOFS: if (!isofs_filestat(vp, fsp)) badtype = "error"; break; case VT_NTFS: if (!ntfs_filestat(vp, fsp)) badtype = "error"; break; case VT_PTYFS: if (!ptyfs_filestat(vp, fsp)) badtype = "error"; break; case VT_TMPFS: if (!tmpfs_filestat(vp, fsp)) badtype = "error"; break; #ifdef HAVE_ZFS case VT_ZFS: if (!zfs_filestat(vp, fsp)) badtype = "error"; break; #endif case VT_NULL: case VT_OVERLAY: case VT_UMAP: badtype = layer_filestat(vp, fsp); break; default: { static char unknown[10]; (void)snprintf(unknown, sizeof unknown, "%s(%#x)", (size_t)vp->v_tag < __arraycount(vnode_tag) ? vnode_tag[vp->v_tag] : "?", vp->v_tag); badtype = unknown; break; } } return badtype; } static int checkfs(struct vnode *vp, struct vnode *vn, struct filestat *fst, const char **type, const char **fname) { *fname = NULL; if (!KVM_READ(vp, vn, sizeof(*vn))) { dprintf("can't read vnode at %p for pid %d", vp, Pid); return 0; } *type = vfilestat(vn, fst); if (checkfile) { int fsmatch = 0; DEVS *d; #if 0 if (*type && *type != dead) return 0; #endif for (d = devs; d != NULL; d = d->next) { if (d->fsid == fst->fsid) { fsmatch = 1; if (d->ino == fst->fileid) { *fname = d->name; break; } } } if (fsmatch == 0 || (*fname == NULL && fsflg == 0)) return 0; } return 1; } static void vprint(struct vnode *vn, struct filestat *fst) { switch (vn->v_type) { case VBLK: case VCHR: { const char *name; if (nflg || ((name = devname(fst->rdev, vn->v_type == VCHR ? S_IFCHR : S_IFBLK)) == NULL)) (void)printf(" %s,%-2llu", kdriver_search(vn->v_type, major(fst->rdev)), (unsigned long long)minor(fst->rdev)); else (void)printf(" %6s", name); break; } default: (void)printf(" %6lld", (long long)fst->size); } } void oprint(struct file *fp, const char *str) { if (Oflg) (void)printf(" %6lld", (long long)(fp ? fp->f_offset : 0)); fputs(str, stdout); } static void vtrans(struct file *fp, struct vnode *vp, int i, int flag, long addr) { struct vnode vn; char mode[15], rw[3]; const char *badtype, *filename; struct filestat fst; if (!checkfs(vp, &vn, &fst, &badtype, &filename)) return; if (Aflg) (void)printf("%*lx ", 2*(int)(sizeof(void*)), addr); PREFIX(i); if (badtype == dead) { char buf[1024]; (void)snprintb(buf, sizeof(buf), VNODE_FLAGBITS, vn.v_iflag | vn.v_vflag | vn.v_uflag); (void)printf(" flags %s\n", buf); return; } else if (badtype) { (void)printf(" - - %10s -\n", badtype); return; } if (nflg) (void)printf(" %3llu,%-2llu", (unsigned long long)major(fst.fsid), (unsigned long long)minor(fst.fsid)); else (void)printf(" %-8s", getmnton(vn.v_mount)); if (nflg) (void)snprintf(mode, sizeof mode, "%6o", fst.mode); else strmode(fst.mode, mode); (void)printf(" %8"PRIu64" %*s", fst.fileid, nflg ? 5 : 10, mode); if (Oflg) { oprint(fp, ""); } else { vprint(&vn, &fst); } rw[0] = '\0'; if (flag & FREAD) (void)strlcat(rw, "r", sizeof(rw)); if (flag & FWRITE) (void)strlcat(rw, "w", sizeof(rw)); (void)printf(" %-2s", rw); if (filename && !fsflg) (void)printf(" %s", filename); (void)putchar('\n'); } static int ufs_filestat(struct vnode *vp, struct filestat *fsp) { struct inode inode; struct ufsmount ufsmount; union dinode { struct ufs1_dinode dp1; struct ufs2_dinode dp2; } dip; if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); return 0; } if (!KVM_READ(inode.i_ump, &ufsmount, sizeof (struct ufsmount))) { dprintf("can't read ufsmount at %p for pid %d", inode.i_ump, Pid); return 0; } switch (ufsmount.um_fstype) { case UFS1: if (!KVM_READ(inode.i_din.ffs1_din, &dip, sizeof(struct ufs1_dinode))) { dprintf("can't read dinode at %p for pid %d", inode.i_din.ffs1_din, Pid); return 0; } fsp->rdev = dip.dp1.di_rdev; break; case UFS2: if (!KVM_READ(inode.i_din.ffs2_din, &dip, sizeof(struct ufs2_dinode))) { dprintf("can't read dinode at %p for pid %d", inode.i_din.ffs2_din, Pid); return 0; } fsp->rdev = dip.dp2.di_rdev; break; default: dprintf("unknown ufs type %ld for pid %d", ufsmount.um_fstype, Pid); break; } fsp->fsid = inode.i_dev & 0xffff; fsp->fileid = inode.i_number; fsp->mode = (mode_t)inode.i_mode; fsp->size = inode.i_size; return 1; } static int ext2fs_filestat(struct vnode *vp, struct filestat *fsp) { struct inode inode; struct ext2fs_dinode dinode; if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) { dprintf("can't read inode at %p for pid %d", VTOI(vp), Pid); return 0; } fsp->fsid = inode.i_dev & 0xffff; fsp->fileid = inode.i_number; if (!KVM_READ(inode.i_din.e2fs_din, &dinode, sizeof dinode)) { dprintf("can't read ext2fs_dinode at %p for pid %d", inode.i_din.e2fs_din, Pid); return 0; } fsp->mode = dinode.e2di_mode; fsp->size = dinode.e2di_size; fsp->rdev = dinode.e2di_rdev; return 1; } static int nfs_filestat(struct vnode *vp, struct filestat *fsp) { struct nfsnode nfsnode; struct vattr va; if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) { dprintf("can't read nfsnode at %p for pid %d", VTONFS(vp), Pid); return 0; } if (!KVM_READ(nfsnode.n_vattr, &va, sizeof(va))) { dprintf("can't read vnode attributes at %p for pid %d", nfsnode.n_vattr, Pid); return 0; } fsp->fsid = va.va_fsid; fsp->fileid = va.va_fileid; fsp->size = nfsnode.n_size; fsp->rdev = va.va_rdev; fsp->mode = (mode_t)va.va_mode | getftype(vp->v_type); return 1; } static int msdosfs_filestat(struct vnode *vp, struct filestat *fsp) { struct denode de; struct msdosfsmount mp; if (!KVM_READ(VTONFS(vp), &de, sizeof(de))) { dprintf("can't read denode at %p for pid %d", VTONFS(vp), Pid); return 0; } if (!KVM_READ(de.de_pmp, &mp, sizeof(mp))) { dprintf("can't read mount struct at %p for pid %d", de.de_pmp, Pid); return 0; } fsp->fsid = de.de_dev & 0xffff; fsp->fileid = 0; /* XXX see msdosfs_vptofh() for more info */ fsp->size = de.de_FileSize; fsp->rdev = 0; /* msdosfs doesn't support device files */ fsp->mode = (0777 & mp.pm_mask) | getftype(vp->v_type); return 1; } static const char * layer_filestat(struct vnode *vp, struct filestat *fsp) { struct layer_node layer_node; struct mount mount; struct vnode vn; const char *badtype; if (!KVM_READ(VTOLAYER(vp), &layer_node, sizeof(layer_node))) { dprintf("can't read layer_node at %p for pid %d", VTOLAYER(vp), Pid); return "error"; } if (!KVM_READ(vp->v_mount, &mount, sizeof(struct mount))) { dprintf("can't read mount struct at %p for pid %d", vp->v_mount, Pid); return "error"; } vp = layer_node.layer_lowervp; if (!KVM_READ(vp, &vn, sizeof(struct vnode))) { dprintf("can't read vnode at %p for pid %d", vp, Pid); return "error"; } if ((badtype = vfilestat(&vn, fsp)) == NULL) fsp->fsid = mount.mnt_stat.f_fsidx.__fsid_val[0]; return badtype; } static char * getmnton(struct mount *m) { static struct mount mount; static struct mtab { struct mtab *next; struct mount *m; char mntonname[MNAMELEN]; } *mhead = NULL; struct mtab *mt; for (mt = mhead; mt != NULL; mt = mt->next) if (m == mt->m) return mt->mntonname; if (!KVM_READ(m, &mount, sizeof(struct mount))) { warnx("can't read mount table at %p", m); return NULL; } if ((mt = malloc(sizeof (struct mtab))) == NULL) { err(1, "malloc(%u)", (unsigned int)sizeof(struct mtab)); } mt->m = m; (void)memmove(&mt->mntonname[0], &mount.mnt_stat.f_mntonname[0], MNAMELEN); mt->next = mhead; mhead = mt; return mt->mntonname; } static const char * inet_addrstr(char *buf, size_t len, const struct in_addr *a, uint16_t p, bool isdg) { char addr[256], serv[256]; struct sockaddr_in sin; const int niflags = (nflg ? (NI_NUMERICHOST|NI_NUMERICSERV) : 0) | (isdg ? NI_DGRAM : 0); (void)memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_len = sizeof(sin); sin.sin_addr = *a; sin.sin_port = htons(p); serv[0] = '\0'; if (getnameinfo((struct sockaddr *)&sin, sin.sin_len, addr, sizeof(addr), serv, sizeof(serv), niflags)) { if (inet_ntop(AF_INET, a, addr, sizeof(addr)) == NULL) strlcpy(addr, "invalid", sizeof(addr)); } if (serv[0] == '\0') snprintf(serv, sizeof(serv), "%u", p); if (a->s_addr == INADDR_ANY) { if (p == 0) buf[0] = '\0'; else snprintf(buf, len, "*:%s", serv); return buf; } snprintf(buf, len, "%s:%s", addr, serv); return buf; } #ifdef INET6 static const char * inet6_addrstr(char *buf, size_t len, const struct in6_addr *a, uint16_t p, bool isdg) { char addr[256], serv[256]; struct sockaddr_in6 sin6; const int niflags = (nflg ? (NI_NUMERICHOST|NI_NUMERICSERV) : 0) | (isdg ? NI_DGRAM : 0); (void)memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(sin6); sin6.sin6_addr = *a; sin6.sin6_port = htons(p); inet6_getscopeid(&sin6, INET6_IS_ADDR_LINKLOCAL); serv[0] = '\0'; if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, addr, sizeof(addr), serv, sizeof(serv), niflags)) { if (inet_ntop(AF_INET6, a, addr, sizeof(addr)) == NULL) strlcpy(addr, "invalid", sizeof(addr)); } if (serv[0] == '\0') snprintf(serv, sizeof(serv), "%u", p); if (IN6_IS_ADDR_UNSPECIFIED(a)) { if (p == 0) buf[0] = '\0'; else snprintf(buf, len, "*:%s", serv); return buf; } if (strchr(addr, ':') == NULL) snprintf(buf, len, "%s:%s", addr, serv); else snprintf(buf, len, "[%s]:%s", addr, serv); return buf; } #endif static const char * at_addrstr(char *buf, size_t len, const struct sockaddr_at *sat) { const struct netrange *nr = &sat->sat_range.r_netrange; const struct at_addr *at = &sat->sat_addr; char addr[64], phase[64], range[64]; if (sat->sat_port || at->s_net || at->s_node) { if (at->s_net || at->s_node) snprintf(addr, sizeof(addr), "%u.%u:%u", ntohs(at->s_net), at->s_node, sat->sat_port); else snprintf(addr, sizeof(addr), "*:%u", sat->sat_port); } else addr[0] = '\0'; if (nr->nr_phase) snprintf(phase, sizeof(phase), " phase %u", nr->nr_phase); else phase[0] = '\0'; if (nr->nr_firstnet || nr->nr_lastnet) snprintf(range, sizeof(range), " range [%u-%u]", ntohs(nr->nr_firstnet), ntohs(nr->nr_lastnet)); else range[0] = '\0'; snprintf(buf, len, "%s%s%s", addr, phase, range); return buf; } static void socktrans(struct file *f, struct socket *sock, int i) { static const char *stypename[] = { "unused", /* 0 */ "stream", /* 1 */ "dgram", /* 2 */ "raw", /* 3 */ "rdm", /* 4 */ "seqpak" /* 5 */ }; #define STYPEMAX 5 struct socket so; struct protosw proto; struct domain dom; struct in4pcb in4pcb; struct in6pcb in6pcb; struct unpcb unpcb; struct ddpcb ddpcb; int len; char dname[32]; char lbuf[512], fbuf[512], pbuf[24]; bool isdgram; pbuf[0] = '\0'; /* fill in socket */ if (!KVM_READ(sock, &so, sizeof(struct socket))) { dprintf("can't read sock at %p", sock); goto bad; } /* fill in protosw entry */ if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) { dprintf("can't read protosw at %p", so.so_proto); goto bad; } /* fill in domain */ if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) { dprintf("can't read domain at %p", proto.pr_domain); goto bad; } if (checkfile && dom.dom_family != AF_LOCAL) return; if ((len = kvm_read(kd, (u_long)dom.dom_name, dname, sizeof(dname) - 1)) != sizeof(dname) -1) { dprintf("can't read domain name at %p", dom.dom_name); dname[0] = '\0'; } else dname[len] = '\0'; /* * protocol specific formatting * * Try to find interesting things to print. For TCP, the interesting * thing is the address of the tcpcb, for UDP and others, just the * inpcb (socket pcb). For UNIX domain, its the address of the socket * pcb and the address of the connected pcb (if connected). Otherwise * just print the protocol number and address of the socket itself. * The idea is not to duplicate netstat, but to make available enough * information for further analysis. */ fbuf[0] = '\0'; lbuf[0] = '\0'; isdgram = false; switch(dom.dom_family) { case AF_INET: getinetproto(pbuf, sizeof(pbuf), proto.pr_protocol); switch (proto.pr_protocol) { case IPPROTO_UDP: isdgram = true; /* FALLTHROUGH */ case IPPROTO_TCP: if (so.so_pcb == NULL) break; if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in4pcb, sizeof(in4pcb)) != sizeof(in4pcb)) { dprintf("can't read in4pcb at %p", so.so_pcb); goto bad; } struct inpcb *inp = (struct inpcb *)&in4pcb; inet_addrstr(lbuf, sizeof(lbuf), &in4p_laddr(inp), ntohs(inp->inp_lport), isdgram); inet_addrstr(fbuf, sizeof(fbuf), &in4p_faddr(inp), ntohs(inp->inp_fport), isdgram); break; default: break; } break; #ifdef INET6 case AF_INET6: getinetproto(pbuf, sizeof(pbuf), proto.pr_protocol); switch (proto.pr_protocol) { case IPPROTO_UDP: isdgram = true; /* FALLTHROUGH */ case IPPROTO_TCP: if (so.so_pcb == NULL) break; if (kvm_read(kd, (u_long)so.so_pcb, (char *)&in6pcb, sizeof(in6pcb)) != sizeof(in6pcb)) { dprintf("can't read in6pcb at %p", so.so_pcb); goto bad; } struct inpcb *inp = (struct inpcb *)&in6pcb; inet6_addrstr(lbuf, sizeof(lbuf), &in6p_laddr(inp), ntohs(inp->inp_lport), isdgram); inet6_addrstr(fbuf, sizeof(fbuf), &in6p_faddr(inp), ntohs(inp->inp_fport), isdgram); break; default: break; } break; #endif case AF_LOCAL: /* print address of pcb and connected pcb */ if (so.so_pcb) { char shoconn[4], *cp; void *pcb[2]; size_t p = 0; pcb[0] = so.so_pcb; cp = shoconn; if (!(so.so_state & SS_CANTRCVMORE)) *cp++ = '<'; *cp++ = '-'; if (!(so.so_state & SS_CANTSENDMORE)) *cp++ = '>'; *cp = '\0'; again: if (kvm_read(kd, (u_long)pcb[p], (char *)&unpcb, sizeof(struct unpcb)) != sizeof(struct unpcb)){ dprintf("can't read unpcb at %p", so.so_pcb); goto bad; } if (checkfile) { struct vnode vn; struct filestat fst; const char *badtype, *filename; if (unpcb.unp_vnode == NULL) return; if (!checkfs(unpcb.unp_vnode, &vn, &fst, &badtype, &filename)) return; } if (unpcb.unp_addr) { struct sockaddr_un *sun = malloc(unpcb.unp_addrlen); if (sun == NULL) err(1, "malloc(%zu)", unpcb.unp_addrlen); if (kvm_read(kd, (u_long)unpcb.unp_addr, sun, unpcb.unp_addrlen) != (ssize_t)unpcb.unp_addrlen) { dprintf("can't read sun at %p", unpcb.unp_addr); free(sun); } else { snprintf(fbuf, sizeof(fbuf), " %s %s %s", shoconn, sun->sun_path, p == 0 ? "[creat]" : "[using]"); free(sun); break; } } if (unpcb.unp_conn) { if (p == 0) { pcb[++p] = unpcb.unp_conn; goto again; } else snprintf(fbuf, sizeof(fbuf), " %p %s %p", pcb[0], shoconn, pcb[1]); } } break; case AF_APPLETALK: getatproto(pbuf, sizeof(pbuf), proto.pr_protocol); if (so.so_pcb) { if (kvm_read(kd, (u_long)so.so_pcb, (char *)&ddpcb, sizeof(ddpcb)) != sizeof(ddpcb)){ dprintf("can't read ddpcb at %p", so.so_pcb); goto bad; } at_addrstr(fbuf, sizeof(fbuf), &ddpcb.ddp_fsat); at_addrstr(lbuf, sizeof(lbuf), &ddpcb.ddp_lsat); } break; default: /* print protocol number and socket address */ snprintf(fbuf, sizeof(fbuf), " %d %jx", proto.pr_protocol, (uintmax_t)(uintptr_t)sock); break; } PREFIX(i); if ((u_short)so.so_type > STYPEMAX) (void)printf("* %s ?%d", dname, so.so_type); else (void)printf("* %s %s", dname, stypename[so.so_type]); if (pbuf[0]) printf("%s", pbuf); if (fbuf[0] || lbuf[0]) printf(" %s%s%s", fbuf, (fbuf[0] && lbuf[0]) ? " <-> " : "", lbuf); else if (so.so_pcb) printf(" %jx", (uintmax_t)(uintptr_t)so.so_pcb); oprint(f, "\n"); return; bad: (void)printf("* error\n"); } static void ptrans(struct file *fp, struct pipe *cpipe, int i) { struct pipe cp; PREFIX(i); /* fill in pipe */ if (!KVM_READ(cpipe, &cp, sizeof(struct pipe))) { dprintf("can't read pipe at %p", cpipe); goto bad; } /* pipe descriptor is either read or write, never both */ (void)printf("* pipe %p %s %p %s%s%s", cpipe, (fp->f_flag & FWRITE) ? "->" : "<-", cp.pipe_peer, (fp->f_flag & FWRITE) ? "w" : "r", (fp->f_flag & FNONBLOCK) ? "n" : "", (cp.pipe_state & PIPE_ASYNC) ? "a" : ""); oprint(fp, "\n"); return; bad: (void)printf("* error\n"); } static void misctrans(struct file *file, int i) { PREFIX(i); pmisc(file, dtypes[file->f_type]); } /* * getinetproto -- * print name of protocol number */ static void getinetproto(char *buf, size_t len, int number) { const char *cp; switch (number) { case IPPROTO_IP: cp = "ip"; break; case IPPROTO_ICMP: cp ="icmp"; break; case IPPROTO_GGP: cp ="ggp"; break; case IPPROTO_TCP: cp ="tcp"; break; case IPPROTO_EGP: cp ="egp"; break; case IPPROTO_PUP: cp ="pup"; break; case IPPROTO_UDP: cp ="udp"; break; case IPPROTO_IDP: cp ="idp"; break; case IPPROTO_RAW: cp ="raw"; break; case IPPROTO_ICMPV6: cp ="icmp6"; break; default: (void)snprintf(buf, len, " %d", number); return; } (void)snprintf(buf, len, " %s", cp); } /* * getatproto -- * print name of protocol number */ static void getatproto(char *buf, size_t len, int number) { const char *cp; switch (number) { case ATPROTO_DDP: cp = "ddp"; break; case ATPROTO_AARP: cp ="aarp"; break; default: (void)snprintf(buf, len, " %d", number); return; } (void)snprintf(buf, len, " %s", cp); } static int getfname(const char *filename) { struct stat statbuf; DEVS *cur; if (stat(filename, &statbuf)) { warn("stat(%s)", filename); return 0; } if ((cur = malloc(sizeof(*cur))) == NULL) { err(1, "malloc(%zu)", sizeof(*cur)); } cur->next = devs; devs = cur; cur->ino = statbuf.st_ino; cur->fsid = statbuf.st_dev & 0xffff; cur->name = filename; return 1; } mode_t getftype(enum vtype v_type) { mode_t ftype; 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; default: ftype = 0; break; }; return ftype; } static void usage(void) { (void)fprintf(stderr, "Usage: %s [-Afnv] [-M core] [-N system] " "[-p pid] [-u user] [file ...]\n", getprogname()); exit(1); }