/* $OpenBSD: procmap.c,v 1.29 2008/06/26 05:42:21 ray Exp $ */ /* $NetBSD: pmap.c,v 1.1 2002/09/01 20:32:44 atatat Exp $ */ /* * Copyright (c) 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Brown. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #undef doff_t #undef IN_ACCESS #undef i_size #undef i_devvp #include #include #include #include #include #include #include #include #include #include #include #include /* * stolen (and munged) from #include */ #define UVM_OBJ_IS_VNODE(uobj) ((uobj)->pgops == uvm_vnodeops) #define UVM_OBJ_IS_AOBJ(uobj) ((uobj)->pgops == aobj_pager) #define UVM_OBJ_IS_DEVICE(uobj) ((uobj)->pgops == uvm_deviceops) #if 0 #define UVM_OBJ_IS_UBCPAGER(uobj) ((uobj)->pgops == ubc_pager) #endif #define PRINT_VMSPACE 0x00000001 #define PRINT_VM_MAP 0x00000002 #define PRINT_VM_MAP_HEADER 0x00000004 #define PRINT_VM_MAP_ENTRY 0x00000008 #define DUMP_NAMEI_CACHE 0x00000010 struct cache_entry { LIST_ENTRY(cache_entry) ce_next; struct vnode *ce_vp, *ce_pvp; u_long ce_cid, ce_pcid; unsigned int ce_nlen; char ce_name[256]; }; LIST_HEAD(cache_head, cache_entry) lcache; LIST_HEAD(nchashhead, namecache) *nchashtbl = NULL; void *uvm_vnodeops, *uvm_deviceops, *aobj_pager; #if 0 void *ubc_pager; #endif void *kernel_floor; u_long nchash_addr, nchashtbl_addr, kernel_map_addr; int debug, verbose; int print_all, print_map, print_maps, print_solaris, print_ddb; int rwx = VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE; rlim_t maxssiz; struct kbit { /* * size of data chunk */ size_t k_size; /* * something for printf() and something for kvm_read() */ union { void *k_addr_p; u_long k_addr_ul; } k_addr; /* * where we actually put the "stuff" */ union { char data[1]; struct vmspace vmspace; struct vm_map vm_map; struct vm_map_entry vm_map_entry; struct vnode vnode; struct uvm_object uvm_object; struct mount mount; struct namecache namecache; struct inode inode; struct iso_node iso_node; struct uvm_device uvm_device; } k_data; }; /* the size of the object in the kernel */ #define S(x) ((x)->k_size) /* the address of the object in kernel, two forms */ #define A(x) ((x)->k_addr.k_addr_ul) #define P(x) ((x)->k_addr.k_addr_p) /* the data from the kernel */ #define D(x,d) (&((x)->k_data.d)) /* suck the data from the kernel */ #define _KDEREF(kd, addr, dst, sz) do { \ ssize_t len; \ len = kvm_read((kd), (addr), (dst), (sz)); \ if (len != (sz)) \ errx(1, "%s == %ld vs. %lu @ %lx", \ kvm_geterr(kd), (long)len, (unsigned long)(sz), (addr)); \ } while (0/*CONSTCOND*/) /* suck the data using the structure */ #define KDEREF(kd, item) _KDEREF((kd), A(item), D(item, data), S(item)) struct nlist nl[] = { { "_maxsmap" }, #define NL_MAXSSIZ 0 { "_uvm_vnodeops" }, #define NL_UVM_VNODEOPS 1 { "_uvm_deviceops" }, #define NL_UVM_DEVICEOPS 2 { "_aobj_pager" }, #define NL_AOBJ_PAGER 3 { "_kernel_map" }, #define NL_KERNEL_MAP 4 { "_nchashtbl" }, #define NL_NCHASHTBL 5 { "_nchash" }, #define NL_NCHASH 6 { "_kernel_text" }, #define NL_KENTER 7 #if 0 { "_ubc_pager" }, #define NL_UBC_PAGER 8 #endif { NULL } }; void load_symbols(kvm_t *); void process_map(kvm_t *, pid_t, struct kinfo_proc2 *); size_t dump_vm_map_entry(kvm_t *, struct kbit *, struct kbit *, int); char *findname(kvm_t *, struct kbit *, struct kbit *, struct kbit *, struct kbit *, struct kbit *); int search_cache(kvm_t *, struct kbit *, char **, char *, size_t); void load_name_cache(kvm_t *); void cache_enter(struct namecache *); static void __dead usage(void); static pid_t strtopid(const char *); int main(int argc, char *argv[]) { char errbuf[_POSIX2_LINE_MAX], *kmem = NULL, *kernel = NULL; struct kinfo_proc2 *kproc; int many, ch, rc; kvm_t *kd; pid_t pid = -1; gid_t gid; while ((ch = getopt(argc, argv, "aD:dlmM:N:p:Prsvx")) != -1) { switch (ch) { case 'a': print_all = 1; break; case 'd': print_ddb = 1; break; case 'D': debug = atoi(optarg); break; case 'l': print_maps = 1; break; case 'm': print_map = 1; break; case 'M': kmem = optarg; break; case 'N': kernel = optarg; break; case 'p': pid = strtopid(optarg); break; case 'P': pid = getpid(); break; case 's': print_solaris = 1; break; case 'v': verbose = 1; break; case 'r': case 'x': errx(1, "-%c option not implemented, sorry", ch); /*NOTREACHED*/ default: usage(); } } /* * Discard setgid privileges if not the running kernel so that bad * guys can't print interesting stuff from kernel memory. */ gid = getgid(); if (kernel != NULL || kmem != NULL) if (setresgid(gid, gid, gid) == -1) err(1, "setresgid"); argc -= optind; argv += optind; /* more than one "process" to dump? */ many = (argc > 1 - (pid == -1 ? 0 : 1)) ? 1 : 0; /* apply default */ if (print_all + print_map + print_maps + print_solaris + print_ddb == 0) print_solaris = 1; /* start by opening libkvm */ kd = kvm_openfiles(kernel, kmem, NULL, O_RDONLY, errbuf); if (kernel == NULL && kmem == NULL) if (setresgid(gid, gid, gid) == -1) err(1, "setresgid"); if (kd == NULL) errx(1, "%s", errbuf); /* get "bootstrap" addresses from kernel */ load_symbols(kd); do { if (pid == -1) { if (argc == 0) pid = getppid(); else { pid = strtopid(argv[0]); argv++; argc--; } } /* find the process id */ if (pid == 0) kproc = NULL; else { kproc = kvm_getproc2(kd, KERN_PROC_PID, pid, sizeof(struct kinfo_proc2), &rc); if (kproc == NULL || rc == 0) { errno = ESRCH; warn("%d", pid); pid = -1; continue; } } /* dump it */ if (many) { if (kproc) printf("process %d:\n", pid); else printf("kernel:\n"); } process_map(kd, pid, kproc); pid = -1; } while (argc > 0); /* done. go away. */ rc = kvm_close(kd); if (rc == -1) err(1, "kvm_close"); return (0); } void process_map(kvm_t *kd, pid_t pid, struct kinfo_proc2 *proc) { struct kbit kbit[4], *vmspace, *vm_map, *header, *vm_map_entry; struct vm_map_entry *last; u_long addr, next; size_t total = 0; char *thing; uid_t uid; if ((uid = getuid())) { if (pid == 0) { warnx("kernel map is restricted"); return; } if (uid != proc->p_uid) { warnx("other users' process maps are restricted"); return; } } vmspace = &kbit[0]; vm_map = &kbit[1]; header = &kbit[2]; vm_map_entry = &kbit[3]; A(vmspace) = 0; A(vm_map) = 0; A(header) = 0; A(vm_map_entry) = 0; if (pid > 0) { A(vmspace) = (u_long)proc->p_vmspace; S(vmspace) = sizeof(struct vmspace); KDEREF(kd, vmspace); thing = "proc->p_vmspace.vm_map"; } else { A(vmspace) = 0; S(vmspace) = 0; thing = "kernel_map"; } if (pid > 0 && (debug & PRINT_VMSPACE)) { printf("proc->p_vmspace %p = {", P(vmspace)); printf(" vm_refcnt = %d,", D(vmspace, vmspace)->vm_refcnt); printf(" vm_shm = %p,\n", D(vmspace, vmspace)->vm_shm); printf(" vm_rssize = %d,", D(vmspace, vmspace)->vm_rssize); printf(" vm_swrss = %d,", D(vmspace, vmspace)->vm_swrss); printf(" vm_tsize = %d,", D(vmspace, vmspace)->vm_tsize); printf(" vm_dsize = %d,\n", D(vmspace, vmspace)->vm_dsize); printf(" vm_ssize = %d,", D(vmspace, vmspace)->vm_ssize); printf(" vm_taddr = %p,", D(vmspace, vmspace)->vm_taddr); printf(" vm_daddr = %p,\n", D(vmspace, vmspace)->vm_daddr); printf(" vm_maxsaddr = %p,", D(vmspace, vmspace)->vm_maxsaddr); printf(" vm_minsaddr = %p }\n", D(vmspace, vmspace)->vm_minsaddr); } S(vm_map) = sizeof(struct vm_map); if (pid > 0) { A(vm_map) = A(vmspace); memcpy(D(vm_map, vm_map), &D(vmspace, vmspace)->vm_map, S(vm_map)); } else { A(vm_map) = kernel_map_addr; KDEREF(kd, vm_map); } if (debug & PRINT_VM_MAP) { printf("%s %p = {", thing, P(vm_map)); printf(" pmap = %p,\n", D(vm_map, vm_map)->pmap); printf(" lock = ,"); printf(" header = ,"); printf(" nentries = %d,\n", D(vm_map, vm_map)->nentries); printf(" size = %lx,", D(vm_map, vm_map)->size); printf(" ref_count = %d,", D(vm_map, vm_map)->ref_count); printf(" ref_lock = ,\n"); printf(" hint = %p,", D(vm_map, vm_map)->hint); printf(" hint_lock = ,\n"); printf(" first_free = %p,", D(vm_map, vm_map)->first_free); printf(" flags = %x <%s%s%s%s%s%s >,\n", D(vm_map, vm_map)->flags, D(vm_map, vm_map)->flags & VM_MAP_PAGEABLE ? " PAGEABLE" : "", D(vm_map, vm_map)->flags & VM_MAP_INTRSAFE ? " INTRSAFE" : "", D(vm_map, vm_map)->flags & VM_MAP_WIREFUTURE ? " WIREFUTURE" : "", D(vm_map, vm_map)->flags & VM_MAP_BUSY ? " BUSY" : "", D(vm_map, vm_map)->flags & VM_MAP_WANTLOCK ? " WANTLOCK" : "", #if VM_MAP_TOPDOWN > 0 D(vm_map, vm_map)->flags & VM_MAP_TOPDOWN ? " TOPDOWN" : #endif ""); printf(" flags_lock = ,"); printf(" timestamp = %u }\n", D(vm_map, vm_map)->timestamp); } if (print_ddb) { printf("MAP %p: [0x%lx->0x%lx]\n", P(vm_map), D(vm_map, vm_map)->min_offset, D(vm_map, vm_map)->max_offset); printf("\t#ent=%d, sz=%ld, ref=%d, version=%d, flags=0x%x\n", D(vm_map, vm_map)->nentries, D(vm_map, vm_map)->size, D(vm_map, vm_map)->ref_count, D(vm_map, vm_map)->timestamp, D(vm_map, vm_map)->flags); printf("\tpmap=%p(resident=)\n", D(vm_map, vm_map)->pmap); } A(header) = A(vm_map) + offsetof(struct vm_map, header); S(header) = sizeof(struct vm_map_entry); memcpy(D(header, vm_map_entry), &D(vm_map, vm_map)->header, S(header)); dump_vm_map_entry(kd, vmspace, header, 1); /* headers */ #ifdef DISABLED_HEADERS if (print_map) printf("%-*s %-*s rwx RWX CPY NCP I W A\n", (int)sizeof(long) * 2 + 2, "Start", (int)sizeof(long) * 2 + 2, "End"); if (print_maps) printf("%-*s %-*s rwxp %-*s Dev Inode File\n", (int)sizeof(long) * 2 + 0, "Start", (int)sizeof(long) * 2 + 0, "End", (int)sizeof(long) * 2 + 0, "Offset"); if (print_solaris) printf("%-*s %*s Protection File\n", (int)sizeof(long) * 2 + 0, "Start", (int)sizeof(int) * 2 - 1, "Size "); #endif if (print_all) printf("%-*s %-*s %*s %-*s rwxpc RWX I/W/A Dev %*s - File\n", (int)sizeof(long) * 2, "Start", (int)sizeof(long) * 2, "End", (int)sizeof(int) * 2, "Size ", (int)sizeof(long) * 2, "Offset", (int)sizeof(int) * 2, "Inode"); /* these are the "sub entries" */ next = (u_long)D(header, vm_map_entry)->next; D(vm_map_entry, vm_map_entry)->next = D(header, vm_map_entry)->next + 1; last = P(header); while (next != 0 && D(vm_map_entry, vm_map_entry)->next != last) { addr = next; A(vm_map_entry) = addr; S(vm_map_entry) = sizeof(struct vm_map_entry); KDEREF(kd, vm_map_entry); total += dump_vm_map_entry(kd, vmspace, vm_map_entry, 0); next = (u_long)D(vm_map_entry, vm_map_entry)->next; } if (print_solaris) printf("%-*s %8luK\n", (int)sizeof(void *) * 2 - 2, " total", (unsigned long)total); if (print_all) printf("%-*s %9luk\n", (int)sizeof(void *) * 4 - 1, " total", (unsigned long)total); } void load_symbols(kvm_t *kd) { int rc, i; rc = kvm_nlist(kd, &nl[0]); if (rc == -1) errx(1, "%s == %d", kvm_geterr(kd), rc); for (i = 0; i < sizeof(nl)/sizeof(nl[0]); i++) if (nl[i].n_value == 0 && nl[i].n_name) #if defined(__m68k__) if (i != NL_KENTER) #endif printf("%s not found\n", nl[i].n_name); uvm_vnodeops = (void*)nl[NL_UVM_VNODEOPS].n_value; uvm_deviceops = (void*)nl[NL_UVM_DEVICEOPS].n_value; aobj_pager = (void*)nl[NL_AOBJ_PAGER].n_value; #if 0 ubc_pager = (void*)nl[NL_UBC_PAGER].n_value; #endif kernel_floor = (void*)nl[NL_KENTER].n_value; nchash_addr = nl[NL_NCHASH].n_value; _KDEREF(kd, nl[NL_MAXSSIZ].n_value, &maxssiz, sizeof(maxssiz)); _KDEREF(kd, nl[NL_NCHASHTBL].n_value, &nchashtbl_addr, sizeof(nchashtbl_addr)); _KDEREF(kd, nl[NL_KERNEL_MAP].n_value, &kernel_map_addr, sizeof(kernel_map_addr)); } size_t dump_vm_map_entry(kvm_t *kd, struct kbit *vmspace, struct kbit *vm_map_entry, int ishead) { struct kbit kbit[3], *uvm_obj, *vp, *vfs; struct vm_map_entry *vme; ino_t inode = 0; dev_t dev = 0; size_t sz = 0; char *name; uvm_obj = &kbit[0]; vp = &kbit[1]; vfs = &kbit[2]; A(uvm_obj) = 0; A(vp) = 0; A(vfs) = 0; vme = D(vm_map_entry, vm_map_entry); if ((ishead && (debug & PRINT_VM_MAP_HEADER)) || (!ishead && (debug & PRINT_VM_MAP_ENTRY))) { printf("%s %p = {", ishead ? "vm_map.header" : "vm_map_entry", P(vm_map_entry)); printf(" prev = %p,", vme->prev); printf(" next = %p,\n", vme->next); printf(" start = %lx,", vme->start); printf(" end = %lx,", vme->end); printf(" object.uvm_obj/sub_map = %p,\n", vme->object.uvm_obj); printf(" offset = %lx,", (unsigned long)vme->offset); printf(" etype = %x <%s%s%s%s%s >,", vme->etype, vme->etype & UVM_ET_OBJ ? " OBJ" : "", vme->etype & UVM_ET_SUBMAP ? " SUBMAP" : "", vme->etype & UVM_ET_COPYONWRITE ? " COW" : "", vme->etype & UVM_ET_NEEDSCOPY ? " NEEDSCOPY" : "", vme->etype & UVM_ET_HOLE ? " HOLE" : ""); printf(" protection = %x,\n", vme->protection); printf(" max_protection = %x,", vme->max_protection); printf(" inheritance = %d,", vme->inheritance); printf(" wired_count = %d,\n", vme->wired_count); printf(" aref = ,"); printf(" advice = %d,", vme->advice); printf(" flags = %x <%s%s > }\n", vme->flags, vme->flags & UVM_MAP_STATIC ? " STATIC" : "", vme->flags & UVM_MAP_KMEM ? " KMEM" : ""); } if (ishead) return (0); A(vp) = 0; A(uvm_obj) = 0; if (vme->object.uvm_obj != NULL) { P(uvm_obj) = vme->object.uvm_obj; S(uvm_obj) = sizeof(struct uvm_object); KDEREF(kd, uvm_obj); if (UVM_ET_ISOBJ(vme) && UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) { P(vp) = P(uvm_obj); S(vp) = sizeof(struct vnode); KDEREF(kd, vp); } } A(vfs) = NULL; if (P(vp) != NULL && D(vp, vnode)->v_mount != NULL) { P(vfs) = D(vp, vnode)->v_mount; S(vfs) = sizeof(struct mount); KDEREF(kd, vfs); D(vp, vnode)->v_mount = D(vfs, mount); } /* * dig out the device number and inode number from certain * file system types. */ #define V_DATA_IS(vp, type, d, i) do { \ struct kbit data; \ P(&data) = D(vp, vnode)->v_data; \ S(&data) = sizeof(*D(&data, type)); \ KDEREF(kd, &data); \ dev = D(&data, type)->d; \ inode = D(&data, type)->i; \ } while (0/*CONSTCOND*/) if (A(vp) && D(vp, vnode)->v_type == VREG && D(vp, vnode)->v_data != NULL) { switch (D(vp, vnode)->v_tag) { case VT_UFS: case VT_EXT2FS: V_DATA_IS(vp, inode, i_dev, i_number); break; case VT_ISOFS: V_DATA_IS(vp, iso_node, i_dev, i_number); break; case VT_NON: case VT_NFS: case VT_MFS: case VT_MSDOSFS: case VT_PORTAL: case VT_PROCFS: case VT_AFS: case VT_ADOSFS: default: break; } } name = findname(kd, vmspace, vm_map_entry, vp, vfs, uvm_obj); if (print_map) { printf("0x%lx 0x%lx %c%c%c %c%c%c %s %s %d %d %d", vme->start, vme->end, (vme->protection & VM_PROT_READ) ? 'r' : '-', (vme->protection & VM_PROT_WRITE) ? 'w' : '-', (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', (vme->max_protection & VM_PROT_READ) ? 'r' : '-', (vme->max_protection & VM_PROT_WRITE) ? 'w' : '-', (vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-', (vme->etype & UVM_ET_COPYONWRITE) ? "COW" : "NCOW", (vme->etype & UVM_ET_NEEDSCOPY) ? "NC" : "NNC", vme->inheritance, vme->wired_count, vme->advice); if (verbose) { if (inode) printf(" %d,%d %u", major(dev), minor(dev), inode); if (name[0]) printf(" %s", name); } printf("\n"); } if (print_maps) printf("%0*lx-%0*lx %c%c%c%c %0*lx %02x:%02x %u %s\n", (int)sizeof(void *) * 2, vme->start, (int)sizeof(void *) * 2, vme->end, (vme->protection & VM_PROT_READ) ? 'r' : '-', (vme->protection & VM_PROT_WRITE) ? 'w' : '-', (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', (vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's', (int)sizeof(void *) * 2, (unsigned long)vme->offset, major(dev), minor(dev), inode, inode ? name : ""); if (print_ddb) { printf(" - %p: 0x%lx->0x%lx: obj=%p/0x%lx, amap=%p/%d\n", P(vm_map_entry), vme->start, vme->end, vme->object.uvm_obj, (unsigned long)vme->offset, vme->aref.ar_amap, vme->aref.ar_pageoff); printf("\tsubmap=%c, cow=%c, nc=%c, prot(max)=%d/%d, inh=%d, " "wc=%d, adv=%d\n", (vme->etype & UVM_ET_SUBMAP) ? 'T' : 'F', (vme->etype & UVM_ET_COPYONWRITE) ? 'T' : 'F', (vme->etype & UVM_ET_NEEDSCOPY) ? 'T' : 'F', vme->protection, vme->max_protection, vme->inheritance, vme->wired_count, vme->advice); if (inode && verbose) printf("\t(dev=%d,%d ino=%u [%s] [%p])\n", major(dev), minor(dev), inode, inode ? name : "", P(vp)); else if (name[0] == ' ' && verbose) printf("\t(%s)\n", &name[2]); } if (print_solaris) { char prot[30]; prot[0] = '\0'; prot[1] = '\0'; if (vme->protection & VM_PROT_READ) strlcat(prot, "/read", sizeof(prot)); if (vme->protection & VM_PROT_WRITE) strlcat(prot, "/write", sizeof(prot)); if (vme->protection & VM_PROT_EXECUTE) strlcat(prot, "/exec", sizeof(prot)); sz = (size_t)((vme->end - vme->start) / 1024); printf("%0*lX %6luK %-15s %s\n", (int)sizeof(void *) * 2, (unsigned long)vme->start, (unsigned long)sz, &prot[1], name); } if (print_all) { sz = (size_t)((vme->end - vme->start) / 1024); printf("%0*lx-%0*lx %7luk %0*lx %c%c%c%c%c (%c%c%c) %d/%d/%d %02d:%02d %7u - %s", (int)sizeof(void *) * 2, vme->start, (int)sizeof(void *) * 2, vme->end - (vme->start != vme->end ? 1 : 0), (unsigned long)sz, (int)sizeof(void *) * 2, (unsigned long)vme->offset, (vme->protection & VM_PROT_READ) ? 'r' : '-', (vme->protection & VM_PROT_WRITE) ? 'w' : '-', (vme->protection & VM_PROT_EXECUTE) ? 'x' : '-', (vme->etype & UVM_ET_COPYONWRITE) ? 'p' : 's', (vme->etype & UVM_ET_NEEDSCOPY) ? '+' : '-', (vme->max_protection & VM_PROT_READ) ? 'r' : '-', (vme->max_protection & VM_PROT_WRITE) ? 'w' : '-', (vme->max_protection & VM_PROT_EXECUTE) ? 'x' : '-', vme->inheritance, vme->wired_count, vme->advice, major(dev), minor(dev), inode, name); if (A(vp)) printf(" [%p]", P(vp)); printf("\n"); } /* no access allowed, don't count space */ if ((vme->protection & rwx) == 0) sz = 0; return (sz); } char * findname(kvm_t *kd, struct kbit *vmspace, struct kbit *vm_map_entry, struct kbit *vp, struct kbit *vfs, struct kbit *uvm_obj) { static char buf[1024], *name; struct vm_map_entry *vme; size_t l; vme = D(vm_map_entry, vm_map_entry); if (UVM_ET_ISOBJ(vme)) { if (A(vfs)) { l = strlen(D(vfs, mount)->mnt_stat.f_mntonname); switch (search_cache(kd, vp, &name, buf, sizeof(buf))) { case 0: /* found something */ if (name - (1 + 11 + l) < buf) break; name--; *name = '/'; /*FALLTHROUGH*/ case 2: /* found nothing */ name -= 11; memcpy(name, " -unknown- ", (size_t)11); name -= l; memcpy(name, D(vfs, mount)->mnt_stat.f_mntonname, l); break; case 1: /* all is well */ if (name - (1 + l) < buf) break; name--; *name = '/'; if (l != 1) { name -= l; memcpy(name, D(vfs, mount)->mnt_stat.f_mntonname, l); } break; } } else if (UVM_OBJ_IS_DEVICE(D(uvm_obj, uvm_object))) { struct kbit kdev; dev_t dev; P(&kdev) = P(uvm_obj); S(&kdev) = sizeof(struct uvm_device); KDEREF(kd, &kdev); dev = D(&kdev, uvm_device)->u_device; name = devname(dev, S_IFCHR); if (name != NULL) snprintf(buf, sizeof(buf), "/dev/%s", name); else snprintf(buf, sizeof(buf), " [ device %d,%d ]", major(dev), minor(dev)); name = buf; } else if (UVM_OBJ_IS_AOBJ(D(uvm_obj, uvm_object))) name = " [ uvm_aobj ]"; #if 0 else if (UVM_OBJ_IS_UBCPAGER(D(uvm_obj, uvm_object))) name = " [ ubc_pager ]"; #endif else if (UVM_OBJ_IS_VNODE(D(uvm_obj, uvm_object))) name = " [ ?VNODE? ]"; else { snprintf(buf, sizeof(buf), " [ unknown (%p) ]", D(uvm_obj, uvm_object)->pgops); name = buf; } } else if (D(vmspace, vmspace)->vm_maxsaddr <= (caddr_t)vme->start && (D(vmspace, vmspace)->vm_maxsaddr + (size_t)maxssiz) >= (caddr_t)vme->end) { name = " [ stack ]"; } else if (D(vmspace, vmspace)->vm_daddr <= (caddr_t)vme->start && D(vmspace, vmspace)->vm_daddr + MAXDSIZ >= (caddr_t)vme->end && D(vmspace, vmspace)->vm_dsize * getpagesize() / 2 < (vme->end - vme->start)) { name = " [ heap ]"; } else if (UVM_ET_ISHOLE(vme)) name = " [ hole ]"; else name = " [ anon ]"; return (name); } int search_cache(kvm_t *kd, struct kbit *vp, char **name, char *buf, size_t blen) { struct cache_entry *ce; struct kbit svp; char *o, *e; u_long cid; if (nchashtbl == NULL) load_name_cache(kd); P(&svp) = P(vp); S(&svp) = sizeof(struct vnode); cid = D(vp, vnode)->v_id; e = &buf[blen - 1]; o = e; do { LIST_FOREACH(ce, &lcache, ce_next) if (ce->ce_vp == P(&svp) && ce->ce_cid == cid) break; if (ce && ce->ce_vp == P(&svp) && ce->ce_cid == cid) { if (o != e) *(--o) = '/'; if (o - ce->ce_nlen <= buf) break; o -= ce->ce_nlen; memcpy(o, ce->ce_name, ce->ce_nlen); P(&svp) = ce->ce_pvp; cid = ce->ce_pcid; } else break; } while (1/*CONSTCOND*/); *e = '\0'; *name = o; if (e == o) return (2); KDEREF(kd, &svp); return (D(&svp, vnode)->v_flag & VROOT); } void load_name_cache(kvm_t *kd) { struct namecache _ncp, *ncp, *oncp; struct nchashhead _ncpp, *ncpp; u_long nchash; int i; LIST_INIT(&lcache); _KDEREF(kd, nchash_addr, &nchash, sizeof(nchash)); nchashtbl = calloc(sizeof(nchashtbl), (int)nchash); if (nchashtbl == NULL) err(1, "load_name_cache"); _KDEREF(kd, nchashtbl_addr, nchashtbl, sizeof(nchashtbl) * (int)nchash); ncpp = &_ncpp; for (i = 0; i < nchash; i++) { ncpp = &nchashtbl[i]; oncp = NULL; LIST_FOREACH(ncp, ncpp, nc_hash) { if (ncp == oncp || (void*)ncp < kernel_floor || ncp == (void*)0xdeadbeef) break; oncp = ncp; _KDEREF(kd, (u_long)ncp, &_ncp, sizeof(*ncp)); ncp = &_ncp; if ((void*)ncp->nc_vp > kernel_floor && ncp->nc_nlen > 0) { if (ncp->nc_nlen > 2 || ncp->nc_name[0] != '.' || (ncp->nc_name[1] != '.' && ncp->nc_nlen != 1)) cache_enter(ncp); } } } } void cache_enter(struct namecache *ncp) { struct cache_entry *ce; if (debug & DUMP_NAMEI_CACHE) printf("ncp->nc_vp %10p, ncp->nc_dvp %10p, ncp->nc_nlen " "%3d [%.*s] (nc_dvpid=%lu, nc_vpid=%lu)\n", ncp->nc_vp, ncp->nc_dvp, ncp->nc_nlen, ncp->nc_nlen, ncp->nc_name, ncp->nc_dvpid, ncp->nc_vpid); ce = malloc(sizeof(struct cache_entry)); if (ce == NULL) err(1, "cache_enter"); ce->ce_vp = ncp->nc_vp; ce->ce_pvp = ncp->nc_dvp; ce->ce_cid = ncp->nc_vpid; ce->ce_pcid = ncp->nc_dvpid; ce->ce_nlen = (unsigned)ncp->nc_nlen; strlcpy(ce->ce_name, ncp->nc_name, sizeof(ce->ce_name)); LIST_INSERT_HEAD(&lcache, ce, ce_next); } static void __dead usage(void) { extern char *__progname; fprintf(stderr, "usage: %s [-adlmPsv] [-D number] " "[-M core] [-N system] [-p pid] [pid ...]\n", __progname); exit(1); } static pid_t strtopid(const char *str) { pid_t pid; errno = 0; pid = (pid_t)strtonum(str, 0, INT_MAX, NULL); if (errno != 0) usage(); return (pid); }