diff options
Diffstat (limited to 'lib/libprocstat/libprocstat.c')
| -rw-r--r-- | lib/libprocstat/libprocstat.c | 1306 |
1 files changed, 1306 insertions, 0 deletions
diff --git a/lib/libprocstat/libprocstat.c b/lib/libprocstat/libprocstat.c new file mode 100644 index 0000000000000..cfe81a2438a6f --- /dev/null +++ b/lib/libprocstat/libprocstat.c @@ -0,0 +1,1306 @@ +/*- + * Copyright (c) 2009 Stanislav Sedov <stas@FreeBSD.org> + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/time.h> +#include <sys/proc.h> +#include <sys/user.h> +#include <sys/stat.h> +#include <sys/vnode.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/domain.h> +#include <sys/protosw.h> +#include <sys/un.h> +#include <sys/unpcb.h> +#include <sys/sysctl.h> +#include <sys/tty.h> +#include <sys/filedesc.h> +#include <sys/queue.h> +#define _WANT_FILE +#include <sys/file.h> +#include <sys/conf.h> +#define _KERNEL +#include <sys/mount.h> +#include <sys/pipe.h> +#include <ufs/ufs/quota.h> +#include <ufs/ufs/inode.h> +#include <fs/devfs/devfs.h> +#include <fs/devfs/devfs_int.h> +#undef _KERNEL +#include <nfs/nfsproto.h> +#include <nfsclient/nfs.h> +#include <nfsclient/nfsnode.h> + +#include <vm/vm.h> +#include <vm/vm_map.h> +#include <vm/vm_object.h> + +#include <net/route.h> +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/in_pcb.h> + +#include <assert.h> +#include <ctype.h> +#include <err.h> +#include <fcntl.h> +#include <kvm.h> +#include <libutil.h> +#include <limits.h> +#include <paths.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <stddef.h> +#include <string.h> +#include <unistd.h> +#include <netdb.h> + +#include <libprocstat.h> +#include "libprocstat_internal.h" +#include "common_kvm.h" + +int statfs(const char *, struct statfs *); /* XXX */ + +#define PROCSTAT_KVM 1 +#define PROCSTAT_SYSCTL 2 + +static char *getmnton(kvm_t *kd, struct mount *m); +static struct filestat_list *procstat_getfiles_kvm( + struct procstat *procstat, struct kinfo_proc *kp, int mmapped); +static struct filestat_list *procstat_getfiles_sysctl( + struct procstat *procstat, struct kinfo_proc *kp, int mmapped); +static int procstat_get_pipe_info_sysctl(struct filestat *fst, + struct pipestat *pipe, char *errbuf); +static int procstat_get_pipe_info_kvm(kvm_t *kd, struct filestat *fst, + struct pipestat *pipe, char *errbuf); +static int procstat_get_pts_info_sysctl(struct filestat *fst, + struct ptsstat *pts, char *errbuf); +static int procstat_get_pts_info_kvm(kvm_t *kd, struct filestat *fst, + struct ptsstat *pts, char *errbuf); +static int procstat_get_socket_info_sysctl(struct filestat *fst, + struct sockstat *sock, char *errbuf); +static int procstat_get_socket_info_kvm(kvm_t *kd, struct filestat *fst, + struct sockstat *sock, char *errbuf); +static int to_filestat_flags(int flags); +static int procstat_get_vnode_info_kvm(kvm_t *kd, struct filestat *fst, + struct vnstat *vn, char *errbuf); +static int procstat_get_vnode_info_sysctl(struct filestat *fst, + struct vnstat *vn, char *errbuf); +static int vntype2psfsttype(int type); + +void +procstat_close(struct procstat *procstat) +{ + + assert(procstat); + if (procstat->type == PROCSTAT_KVM) + kvm_close(procstat->kd); +} + +struct procstat * +procstat_open_sysctl(void) +{ + struct procstat *procstat; + + procstat = calloc(1, sizeof(*procstat)); + if (procstat == NULL) { + warn("malloc()"); + return (NULL); + } + procstat->type = PROCSTAT_SYSCTL; + return (procstat); +} + +struct procstat * +procstat_open_kvm(const char *nlistf, const char *memf) +{ + struct procstat *procstat; + kvm_t *kd; + char buf[_POSIX2_LINE_MAX]; + + procstat = calloc(1, sizeof(*procstat)); + if (procstat == NULL) { + warn("malloc()"); + return (NULL); + } + kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf); + if (kd == NULL) { + warnx("kvm_openfiles(): %s", buf); + free(procstat); + return (NULL); + } + procstat->type = PROCSTAT_KVM; + procstat->kd = kd; + return (procstat); +} + +struct kinfo_proc * +procstat_getprocs(struct procstat *procstat, int what, int arg, + unsigned int *count) +{ + struct kinfo_proc *p0, *p; + size_t len; + int name[4]; + int error; + + assert(procstat); + assert(count); + p = NULL; + if (procstat->type == PROCSTAT_KVM) { + p0 = kvm_getprocs(procstat->kd, what, arg, count); + if (p0 == NULL || count == 0) + return (NULL); + len = *count * sizeof(*p); + p = malloc(len); + if (p == NULL) { + warnx("malloc(%zd)", len); + goto fail; + } + bcopy(p0, p, len); + return (p); + } else if (procstat->type == PROCSTAT_SYSCTL) { + len = 0; + name[0] = CTL_KERN; + name[1] = KERN_PROC; + name[2] = what; + name[3] = arg; + error = sysctl(name, 4, NULL, &len, NULL, 0); + if (error < 0 && errno != EPERM) { + warn("sysctl(kern.proc)"); + goto fail; + } + if (len == 0) { + warnx("no processes?"); + goto fail; + } + p = malloc(len); + if (p == NULL) { + warnx("malloc(%zd)", len); + goto fail; + } + error = sysctl(name, 4, p, &len, NULL, 0); + if (error < 0 && errno != EPERM) { + warn("sysctl(kern.proc)"); + goto fail; + } + /* Perform simple consistency checks. */ + if ((len % sizeof(*p)) != 0 || p->ki_structsize != sizeof(*p)) { + warnx("kinfo_proc structure size mismatch"); + goto fail; + } + *count = len / sizeof(*p); + return (p); + } else { + warnx("unknown access method"); + return (NULL); + } +fail: + if (p) + free(p); + return (NULL); +} + +void +procstat_freeprocs(struct procstat *procstat __unused, struct kinfo_proc *p) +{ + + if (p != NULL) + free(p); + p = NULL; +} + +struct filestat_list * +procstat_getfiles(struct procstat *procstat, struct kinfo_proc *kp, int mmapped) +{ + + if (procstat->type == PROCSTAT_SYSCTL) + return (procstat_getfiles_sysctl(procstat, kp, mmapped)); + else if (procstat->type == PROCSTAT_KVM) + return (procstat_getfiles_kvm(procstat, kp, mmapped)); + else + return (NULL); +} + +void +procstat_freefiles(struct procstat *procstat, struct filestat_list *head) +{ + struct filestat *fst, *tmp; + + STAILQ_FOREACH_SAFE(fst, head, next, tmp) { + if (fst->fs_path != NULL) + free(fst->fs_path); + free(fst); + } + free(head); + if (procstat->vmentries != NULL) { + free (procstat->vmentries); + procstat->vmentries = NULL; + } + if (procstat->files != NULL) { + free (procstat->files); + procstat->files = NULL; + } +} + +static struct filestat * +filestat_new_entry(void *typedep, int type, int fd, int fflags, int uflags, + int refcount, off_t offset, char *path) +{ + struct filestat *entry; + + entry = calloc(1, sizeof(*entry)); + if (entry == NULL) { + warn("malloc()"); + return (NULL); + } + entry->fs_typedep = typedep; + entry->fs_fflags = fflags; + entry->fs_uflags = uflags; + entry->fs_fd = fd; + entry->fs_type = type; + entry->fs_ref_count = refcount; + entry->fs_offset = offset; + entry->fs_path = path; + return (entry); +} + +static struct vnode * +getctty(kvm_t *kd, struct kinfo_proc *kp) +{ + struct pgrp pgrp; + struct proc proc; + struct session sess; + int error; + + assert(kp); + error = kvm_read_all(kd, (unsigned long)kp->ki_paddr, &proc, + sizeof(proc)); + if (error == 0) { + warnx("can't read proc struct at %p for pid %d", + kp->ki_paddr, kp->ki_pid); + return (NULL); + } + if (proc.p_pgrp == NULL) + return (NULL); + error = kvm_read_all(kd, (unsigned long)proc.p_pgrp, &pgrp, + sizeof(pgrp)); + if (error == 0) { + warnx("can't read pgrp struct at %p for pid %d", + proc.p_pgrp, kp->ki_pid); + return (NULL); + } + error = kvm_read_all(kd, (unsigned long)pgrp.pg_session, &sess, + sizeof(sess)); + if (error == 0) { + warnx("can't read session struct at %p for pid %d", + pgrp.pg_session, kp->ki_pid); + return (NULL); + } + return (sess.s_ttyvp); +} + +static struct filestat_list * +procstat_getfiles_kvm(struct procstat *procstat, struct kinfo_proc *kp, int mmapped) +{ + struct file file; + struct filedesc filed; + struct vm_map_entry vmentry; + struct vm_object object; + struct vmspace vmspace; + vm_map_entry_t entryp; + vm_map_t map; + vm_object_t objp; + struct vnode *vp; + struct file **ofiles; + struct filestat *entry; + struct filestat_list *head; + kvm_t *kd; + void *data; + int i, fflags; + int prot, type; + unsigned int nfiles; + + assert(procstat); + kd = procstat->kd; + if (kd == NULL) + return (NULL); + if (kp->ki_fd == NULL) + return (NULL); + if (!kvm_read_all(kd, (unsigned long)kp->ki_fd, &filed, + sizeof(filed))) { + warnx("can't read filedesc at %p", (void *)kp->ki_fd); + return (NULL); + } + + /* + * Allocate list head. + */ + head = malloc(sizeof(*head)); + if (head == NULL) + return (NULL); + STAILQ_INIT(head); + + /* root directory vnode, if one. */ + if (filed.fd_rdir) { + entry = filestat_new_entry(filed.fd_rdir, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ, PS_FST_UFLAG_RDIR, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + /* current working directory vnode. */ + if (filed.fd_cdir) { + entry = filestat_new_entry(filed.fd_cdir, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ, PS_FST_UFLAG_CDIR, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + /* jail root, if any. */ + if (filed.fd_jdir) { + entry = filestat_new_entry(filed.fd_jdir, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ, PS_FST_UFLAG_JAIL, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + /* ktrace vnode, if one */ + if (kp->ki_tracep) { + entry = filestat_new_entry(kp->ki_tracep, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ | PS_FST_FFLAG_WRITE, + PS_FST_UFLAG_TRACE, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + /* text vnode, if one */ + if (kp->ki_textvp) { + entry = filestat_new_entry(kp->ki_textvp, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ, PS_FST_UFLAG_TEXT, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + /* Controlling terminal. */ + if ((vp = getctty(kd, kp)) != NULL) { + entry = filestat_new_entry(vp, PS_FST_TYPE_VNODE, -1, + PS_FST_FFLAG_READ | PS_FST_FFLAG_WRITE, + PS_FST_UFLAG_CTTY, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + + nfiles = filed.fd_lastfile + 1; + ofiles = malloc(nfiles * sizeof(struct file *)); + if (ofiles == NULL) { + warn("malloc(%zd)", nfiles * sizeof(struct file *)); + goto do_mmapped; + } + if (!kvm_read_all(kd, (unsigned long)filed.fd_ofiles, ofiles, + nfiles * sizeof(struct file *))) { + warnx("cannot read file structures at %p", + (void *)filed.fd_ofiles); + free(ofiles); + goto do_mmapped; + } + for (i = 0; i <= filed.fd_lastfile; i++) { + if (ofiles[i] == NULL) + continue; + if (!kvm_read_all(kd, (unsigned long)ofiles[i], &file, + sizeof(struct file))) { + warnx("can't read file %d at %p", i, + (void *)ofiles[i]); + continue; + } + switch (file.f_type) { + case DTYPE_VNODE: + type = PS_FST_TYPE_VNODE; + data = file.f_vnode; + break; + case DTYPE_SOCKET: + type = PS_FST_TYPE_SOCKET; + data = file.f_data; + break; + case DTYPE_PIPE: + type = PS_FST_TYPE_PIPE; + data = file.f_data; + break; + case DTYPE_FIFO: + type = PS_FST_TYPE_FIFO; + data = file.f_vnode; + break; +#ifdef DTYPE_PTS + case DTYPE_PTS: + type = PS_FST_TYPE_PTS; + data = file.f_data; + break; +#endif + default: + continue; + } + entry = filestat_new_entry(data, type, i, + to_filestat_flags(file.f_flag), 0, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + free(ofiles); + +do_mmapped: + + /* + * Process mmapped files if requested. + */ + if (mmapped) { + if (!kvm_read_all(kd, (unsigned long)kp->ki_vmspace, &vmspace, + sizeof(vmspace))) { + warnx("can't read vmspace at %p", + (void *)kp->ki_vmspace); + goto exit; + } + map = &vmspace.vm_map; + + for (entryp = map->header.next; + entryp != &kp->ki_vmspace->vm_map.header; + entryp = vmentry.next) { + if (!kvm_read_all(kd, (unsigned long)entryp, &vmentry, + sizeof(vmentry))) { + warnx("can't read vm_map_entry at %p", + (void *)entryp); + continue; + } + if (vmentry.eflags & MAP_ENTRY_IS_SUB_MAP) + continue; + if ((objp = vmentry.object.vm_object) == NULL) + continue; + for (; objp; objp = object.backing_object) { + if (!kvm_read_all(kd, (unsigned long)objp, + &object, sizeof(object))) { + warnx("can't read vm_object at %p", + (void *)objp); + break; + } + } + + /* We want only vnode objects. */ + if (object.type != OBJT_VNODE) + continue; + + prot = vmentry.protection; + fflags = 0; + if (prot & VM_PROT_READ) + fflags = PS_FST_FFLAG_READ; + if (prot & VM_PROT_WRITE) + fflags |= PS_FST_FFLAG_WRITE; + + /* + * Create filestat entry. + */ + entry = filestat_new_entry(object.handle, + PS_FST_TYPE_VNODE, -1, fflags, + PS_FST_UFLAG_MMAP, 0, 0, NULL); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + } +exit: + return (head); +} + +/* + * kinfo types to filestat translation. + */ +static int +kinfo_type2fst(int kftype) +{ + static struct { + int kf_type; + int fst_type; + } kftypes2fst[] = { + { KF_TYPE_CRYPTO, PS_FST_TYPE_CRYPTO }, + { KF_TYPE_FIFO, PS_FST_TYPE_FIFO }, + { KF_TYPE_KQUEUE, PS_FST_TYPE_KQUEUE }, + { KF_TYPE_MQUEUE, PS_FST_TYPE_MQUEUE }, + { KF_TYPE_NONE, PS_FST_TYPE_NONE }, + { KF_TYPE_PIPE, PS_FST_TYPE_PIPE }, + { KF_TYPE_PTS, PS_FST_TYPE_PTS }, + { KF_TYPE_SEM, PS_FST_TYPE_SEM }, + { KF_TYPE_SHM, PS_FST_TYPE_SHM }, + { KF_TYPE_SOCKET, PS_FST_TYPE_SOCKET }, + { KF_TYPE_VNODE, PS_FST_TYPE_VNODE }, + { KF_TYPE_UNKNOWN, PS_FST_TYPE_UNKNOWN } + }; +#define NKFTYPES (sizeof(kftypes2fst) / sizeof(*kftypes2fst)) + unsigned int i; + + for (i = 0; i < NKFTYPES; i++) + if (kftypes2fst[i].kf_type == kftype) + break; + if (i == NKFTYPES) + return (PS_FST_TYPE_UNKNOWN); + return (kftypes2fst[i].fst_type); +} + +/* + * kinfo flags to filestat translation. + */ +static int +kinfo_fflags2fst(int kfflags) +{ + static struct { + int kf_flag; + int fst_flag; + } kfflags2fst[] = { + { KF_FLAG_APPEND, PS_FST_FFLAG_APPEND }, + { KF_FLAG_ASYNC, PS_FST_FFLAG_ASYNC }, + { KF_FLAG_CREAT, PS_FST_FFLAG_CREAT }, + { KF_FLAG_DIRECT, PS_FST_FFLAG_DIRECT }, + { KF_FLAG_EXCL, PS_FST_FFLAG_EXCL }, + { KF_FLAG_EXEC, PS_FST_FFLAG_EXEC }, + { KF_FLAG_EXLOCK, PS_FST_FFLAG_EXLOCK }, + { KF_FLAG_FSYNC, PS_FST_FFLAG_SYNC }, + { KF_FLAG_HASLOCK, PS_FST_FFLAG_HASLOCK }, + { KF_FLAG_NOFOLLOW, PS_FST_FFLAG_NOFOLLOW }, + { KF_FLAG_NONBLOCK, PS_FST_FFLAG_NONBLOCK }, + { KF_FLAG_READ, PS_FST_FFLAG_READ }, + { KF_FLAG_SHLOCK, PS_FST_FFLAG_SHLOCK }, + { KF_FLAG_TRUNC, PS_FST_FFLAG_TRUNC }, + { KF_FLAG_WRITE, PS_FST_FFLAG_WRITE } + }; +#define NKFFLAGS (sizeof(kfflags2fst) / sizeof(*kfflags2fst)) + unsigned int i; + int flags; + + flags = 0; + for (i = 0; i < NKFFLAGS; i++) + if ((kfflags & kfflags2fst[i].kf_flag) != 0) + flags |= kfflags2fst[i].fst_flag; + return (flags); +} + +static int +kinfo_uflags2fst(int fd) +{ + + switch (fd) { + case KF_FD_TYPE_CTTY: + return (PS_FST_UFLAG_CTTY); + case KF_FD_TYPE_CWD: + return (PS_FST_UFLAG_CDIR); + case KF_FD_TYPE_JAIL: + return (PS_FST_UFLAG_JAIL); + case KF_FD_TYPE_TEXT: + return (PS_FST_UFLAG_TEXT); + case KF_FD_TYPE_TRACE: + return (PS_FST_UFLAG_TRACE); + case KF_FD_TYPE_ROOT: + return (PS_FST_UFLAG_RDIR); + } + return (0); +} + +static struct filestat_list * +procstat_getfiles_sysctl(struct procstat *procstat, struct kinfo_proc *kp, int mmapped) +{ + struct kinfo_file *kif, *files; + struct kinfo_vmentry *kve, *vmentries; + struct filestat_list *head; + struct filestat *entry; + char *path; + off_t offset; + int cnt, fd, fflags; + int i, type, uflags; + int refcount; + + assert(kp); + if (kp->ki_fd == NULL) + return (NULL); + + files = kinfo_getfile(kp->ki_pid, &cnt); + if (files == NULL && errno != EPERM) { + warn("kinfo_getfile()"); + return (NULL); + } + procstat->files = files; + + /* + * Allocate list head. + */ + head = malloc(sizeof(*head)); + if (head == NULL) + return (NULL); + STAILQ_INIT(head); + for (i = 0; i < cnt; i++) { + kif = &files[i]; + + type = kinfo_type2fst(kif->kf_type); + fd = kif->kf_fd >= 0 ? kif->kf_fd : -1; + fflags = kinfo_fflags2fst(kif->kf_flags); + uflags = kinfo_uflags2fst(kif->kf_fd); + refcount = kif->kf_ref_count; + offset = kif->kf_offset; + if (*kif->kf_path != '\0') + path = strdup(kif->kf_path); + else + path = NULL; + + /* + * Create filestat entry. + */ + entry = filestat_new_entry(kif, type, fd, fflags, uflags, + refcount, offset, path); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + if (mmapped != 0) { + vmentries = kinfo_getvmmap(kp->ki_pid, &cnt); + procstat->vmentries = vmentries; + if (vmentries == NULL || cnt == 0) + goto fail; + for (i = 0; i < cnt; i++) { + kve = &vmentries[i]; + if (kve->kve_type != KVME_TYPE_VNODE) + continue; + fflags = 0; + if (kve->kve_protection & KVME_PROT_READ) + fflags = PS_FST_FFLAG_READ; + if (kve->kve_protection & KVME_PROT_WRITE) + fflags |= PS_FST_FFLAG_WRITE; + offset = kve->kve_offset; + refcount = kve->kve_ref_count; + if (*kve->kve_path != '\0') + path = strdup(kve->kve_path); + else + path = NULL; + entry = filestat_new_entry(kve, PS_FST_TYPE_VNODE, -1, + fflags, PS_FST_UFLAG_MMAP, refcount, offset, path); + if (entry != NULL) + STAILQ_INSERT_TAIL(head, entry, next); + } + } +fail: + return (head); +} + +int +procstat_get_pipe_info(struct procstat *procstat, struct filestat *fst, + struct pipestat *ps, char *errbuf) +{ + + assert(ps); + if (procstat->type == PROCSTAT_KVM) { + return (procstat_get_pipe_info_kvm(procstat->kd, fst, ps, + errbuf)); + } else if (procstat->type == PROCSTAT_SYSCTL) { + return (procstat_get_pipe_info_sysctl(fst, ps, errbuf)); + } else { + warnx("unknow access method: %d", procstat->type); + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); + } +} + +static int +procstat_get_pipe_info_kvm(kvm_t *kd, struct filestat *fst, + struct pipestat *ps, char *errbuf) +{ + struct pipe pi; + void *pipep; + + assert(kd); + assert(ps); + assert(fst); + bzero(ps, sizeof(*ps)); + pipep = fst->fs_typedep; + if (pipep == NULL) + goto fail; + if (!kvm_read_all(kd, (unsigned long)pipep, &pi, sizeof(struct pipe))) { + warnx("can't read pipe at %p", (void *)pipep); + goto fail; + } + ps->addr = (uintptr_t)pipep; + ps->peer = (uintptr_t)pi.pipe_peer; + ps->buffer_cnt = pi.pipe_buffer.cnt; + return (0); + +fail: + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); +} + +static int +procstat_get_pipe_info_sysctl(struct filestat *fst, struct pipestat *ps, + char *errbuf __unused) +{ + struct kinfo_file *kif; + + assert(ps); + assert(fst); + bzero(ps, sizeof(*ps)); + kif = fst->fs_typedep; + if (kif == NULL) + return (1); + ps->addr = kif->kf_un.kf_pipe.kf_pipe_addr; + ps->peer = kif->kf_un.kf_pipe.kf_pipe_peer; + ps->buffer_cnt = kif->kf_un.kf_pipe.kf_pipe_buffer_cnt; + return (0); +} + +int +procstat_get_pts_info(struct procstat *procstat, struct filestat *fst, + struct ptsstat *pts, char *errbuf) +{ + + assert(pts); + if (procstat->type == PROCSTAT_KVM) { + return (procstat_get_pts_info_kvm(procstat->kd, fst, pts, + errbuf)); + } else if (procstat->type == PROCSTAT_SYSCTL) { + return (procstat_get_pts_info_sysctl(fst, pts, errbuf)); + } else { + warnx("unknow access method: %d", procstat->type); + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); + } +} + +static int +procstat_get_pts_info_kvm(kvm_t *kd, struct filestat *fst, + struct ptsstat *pts, char *errbuf) +{ + struct tty tty; + void *ttyp; + + assert(kd); + assert(pts); + assert(fst); + bzero(pts, sizeof(*pts)); + ttyp = fst->fs_typedep; + if (ttyp == NULL) + goto fail; + if (!kvm_read_all(kd, (unsigned long)ttyp, &tty, sizeof(struct tty))) { + warnx("can't read tty at %p", (void *)ttyp); + goto fail; + } + pts->dev = dev2udev(kd, tty.t_dev); + (void)kdevtoname(kd, tty.t_dev, pts->devname); + return (0); + +fail: + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); +} + +static int +procstat_get_pts_info_sysctl(struct filestat *fst, struct ptsstat *pts, + char *errbuf __unused) +{ + struct kinfo_file *kif; + + assert(pts); + assert(fst); + bzero(pts, sizeof(*pts)); + kif = fst->fs_typedep; + if (kif == NULL) + return (0); + pts->dev = kif->kf_un.kf_pts.kf_pts_dev; + strlcpy(pts->devname, kif->kf_path, sizeof(pts->devname)); + return (0); +} + +int +procstat_get_vnode_info(struct procstat *procstat, struct filestat *fst, + struct vnstat *vn, char *errbuf) +{ + + assert(vn); + if (procstat->type == PROCSTAT_KVM) { + return (procstat_get_vnode_info_kvm(procstat->kd, fst, vn, + errbuf)); + } else if (procstat->type == PROCSTAT_SYSCTL) { + return (procstat_get_vnode_info_sysctl(fst, vn, errbuf)); + } else { + warnx("unknow access method: %d", procstat->type); + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); + } +} + +static int +procstat_get_vnode_info_kvm(kvm_t *kd, struct filestat *fst, + struct vnstat *vn, char *errbuf) +{ + /* Filesystem specific handlers. */ + #define FSTYPE(fst) {#fst, fst##_filestat} + struct { + const char *tag; + int (*handler)(kvm_t *kd, struct vnode *vp, + struct vnstat *vn); + } fstypes[] = { + FSTYPE(devfs), + FSTYPE(isofs), + FSTYPE(msdosfs), + FSTYPE(nfs), + FSTYPE(ntfs), + FSTYPE(nwfs), + FSTYPE(smbfs), + FSTYPE(udf), + FSTYPE(ufs), +#ifdef ZFS + FSTYPE(zfs), +#endif + }; +#define NTYPES (sizeof(fstypes) / sizeof(*fstypes)) + struct vnode vnode; + char tagstr[12]; + void *vp; + int error, found; + unsigned int i; + + assert(kd); + assert(vn); + assert(fst); + vp = fst->fs_typedep; + if (vp == NULL) + goto fail; + error = kvm_read_all(kd, (unsigned long)vp, &vnode, sizeof(vnode)); + if (error == 0) { + warnx("can't read vnode at %p", (void *)vp); + goto fail; + } + bzero(vn, sizeof(*vn)); + vn->vn_type = vntype2psfsttype(vnode.v_type); + if (vnode.v_type == VNON || vnode.v_type == VBAD) + return (0); + error = kvm_read_all(kd, (unsigned long)vnode.v_tag, tagstr, + sizeof(tagstr)); + if (error == 0) { + warnx("can't read v_tag at %p", (void *)vp); + goto fail; + } + tagstr[sizeof(tagstr) - 1] = '\0'; + + /* + * Find appropriate handler. + */ + for (i = 0, found = 0; i < NTYPES; i++) + if (!strcmp(fstypes[i].tag, tagstr)) { + if (fstypes[i].handler(kd, &vnode, vn) != 0) { + goto fail; + } + break; + } + if (i == NTYPES) { + snprintf(errbuf, _POSIX2_LINE_MAX, "?(%s)", tagstr); + return (1); + } + vn->vn_mntdir = getmnton(kd, vnode.v_mount); + if ((vnode.v_type == VBLK || vnode.v_type == VCHR) && + vnode.v_rdev != NULL){ + vn->vn_dev = dev2udev(kd, vnode.v_rdev); + (void)kdevtoname(kd, vnode.v_rdev, vn->vn_devname); + } else { + vn->vn_dev = -1; + } + return (0); + +fail: + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); +} + +/* + * kinfo vnode type to filestat translation. + */ +static int +kinfo_vtype2fst(int kfvtype) +{ + static struct { + int kf_vtype; + int fst_vtype; + } kfvtypes2fst[] = { + { KF_VTYPE_VBAD, PS_FST_VTYPE_VBAD }, + { KF_VTYPE_VBLK, PS_FST_VTYPE_VBLK }, + { KF_VTYPE_VCHR, PS_FST_VTYPE_VCHR }, + { KF_VTYPE_VDIR, PS_FST_VTYPE_VDIR }, + { KF_VTYPE_VFIFO, PS_FST_VTYPE_VFIFO }, + { KF_VTYPE_VLNK, PS_FST_VTYPE_VLNK }, + { KF_VTYPE_VNON, PS_FST_VTYPE_VNON }, + { KF_VTYPE_VREG, PS_FST_VTYPE_VREG }, + { KF_VTYPE_VSOCK, PS_FST_VTYPE_VSOCK } + }; +#define NKFVTYPES (sizeof(kfvtypes2fst) / sizeof(*kfvtypes2fst)) + unsigned int i; + + for (i = 0; i < NKFVTYPES; i++) + if (kfvtypes2fst[i].kf_vtype == kfvtype) + break; + if (i == NKFVTYPES) + return (PS_FST_VTYPE_UNKNOWN); + return (kfvtypes2fst[i].fst_vtype); +} + +static int +procstat_get_vnode_info_sysctl(struct filestat *fst, struct vnstat *vn, + char *errbuf) +{ + struct statfs stbuf; + struct kinfo_file *kif; + struct kinfo_vmentry *kve; + uint64_t fileid; + uint64_t size; + char *name, *path; + uint32_t fsid; + uint16_t mode; + uint32_t rdev; + int vntype; + int status; + + assert(fst); + assert(vn); + bzero(vn, sizeof(*vn)); + if (fst->fs_typedep == NULL) + return (1); + if (fst->fs_uflags & PS_FST_UFLAG_MMAP) { + kve = fst->fs_typedep; + fileid = kve->kve_vn_fileid; + fsid = kve->kve_vn_fsid; + mode = kve->kve_vn_mode; + path = kve->kve_path; + rdev = kve->kve_vn_rdev; + size = kve->kve_vn_size; + vntype = kinfo_vtype2fst(kve->kve_vn_type); + status = kve->kve_status; + } else { + kif = fst->fs_typedep; + fileid = kif->kf_un.kf_file.kf_file_fileid; + fsid = kif->kf_un.kf_file.kf_file_fsid; + mode = kif->kf_un.kf_file.kf_file_mode; + path = kif->kf_path; + rdev = kif->kf_un.kf_file.kf_file_rdev; + size = kif->kf_un.kf_file.kf_file_size; + vntype = kinfo_vtype2fst(kif->kf_vnode_type); + status = kif->kf_status; + } + vn->vn_type = vntype; + if (vntype == PS_FST_VTYPE_VNON || vntype == PS_FST_VTYPE_VBAD) + return (0); + if ((status & KF_ATTR_VALID) == 0) { + snprintf(errbuf, _POSIX2_LINE_MAX, "? (no info available)"); + return (1); + } + if (path && *path) { + statfs(path, &stbuf); + vn->vn_mntdir = strdup(stbuf.f_mntonname); + } else + vn->vn_mntdir = strdup("-"); + vn->vn_dev = rdev; + if (vntype == PS_FST_VTYPE_VBLK) { + name = devname(rdev, S_IFBLK); + if (name != NULL) + strlcpy(vn->vn_devname, name, + sizeof(vn->vn_devname)); + } else if (vntype == PS_FST_VTYPE_VCHR) { + name = devname(vn->vn_dev, S_IFCHR); + if (name != NULL) + strlcpy(vn->vn_devname, name, + sizeof(vn->vn_devname)); + } + vn->vn_fsid = fsid; + vn->vn_fileid = fileid; + vn->vn_size = size; + vn->vn_mode = mode; + return (0); +} + +int +procstat_get_socket_info(struct procstat *procstat, struct filestat *fst, + struct sockstat *sock, char *errbuf) +{ + + assert(sock); + if (procstat->type == PROCSTAT_KVM) { + return (procstat_get_socket_info_kvm(procstat->kd, fst, sock, + errbuf)); + } else if (procstat->type == PROCSTAT_SYSCTL) { + return (procstat_get_socket_info_sysctl(fst, sock, errbuf)); + } else { + warnx("unknow access method: %d", procstat->type); + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); + } +} + +static int +procstat_get_socket_info_kvm(kvm_t *kd, struct filestat *fst, + struct sockstat *sock, char *errbuf) +{ + struct domain dom; + struct inpcb inpcb; + struct protosw proto; + struct socket s; + struct unpcb unpcb; + ssize_t len; + void *so; + + assert(kd); + assert(sock); + assert(fst); + bzero(sock, sizeof(*sock)); + so = fst->fs_typedep; + if (so == NULL) + goto fail; + sock->so_addr = (uintptr_t)so; + /* fill in socket */ + if (!kvm_read_all(kd, (unsigned long)so, &s, + sizeof(struct socket))) { + warnx("can't read sock at %p", (void *)so); + goto fail; + } + /* fill in protosw entry */ + if (!kvm_read_all(kd, (unsigned long)s.so_proto, &proto, + sizeof(struct protosw))) { + warnx("can't read protosw at %p", (void *)s.so_proto); + goto fail; + } + /* fill in domain */ + if (!kvm_read_all(kd, (unsigned long)proto.pr_domain, &dom, + sizeof(struct domain))) { + warnx("can't read domain at %p", + (void *)proto.pr_domain); + goto fail; + } + if ((len = kvm_read(kd, (unsigned long)dom.dom_name, sock->dname, + sizeof(sock->dname) - 1)) < 0) { + warnx("can't read domain name at %p", (void *)dom.dom_name); + sock->dname[0] = '\0'; + } + else + sock->dname[len] = '\0'; + + /* + * Fill in known data. + */ + sock->type = s.so_type; + sock->proto = proto.pr_protocol; + sock->dom_family = dom.dom_family; + sock->so_pcb = (uintptr_t)s.so_pcb; + + /* + * Protocol specific data. + */ + switch(dom.dom_family) { + case AF_INET: + case AF_INET6: + if (proto.pr_protocol == IPPROTO_TCP) { + if (s.so_pcb) { + if (kvm_read(kd, (u_long)s.so_pcb, + (char *)&inpcb, sizeof(struct inpcb)) + != sizeof(struct inpcb)) { + warnx("can't read inpcb at %p", + (void *)s.so_pcb); + } else + sock->inp_ppcb = + (uintptr_t)inpcb.inp_ppcb; + } + } + break; + case AF_UNIX: + if (s.so_pcb) { + if (kvm_read(kd, (u_long)s.so_pcb, (char *)&unpcb, + sizeof(struct unpcb)) != sizeof(struct unpcb)){ + warnx("can't read unpcb at %p", + (void *)s.so_pcb); + } else if (unpcb.unp_conn) { + sock->so_rcv_sb_state = s.so_rcv.sb_state; + sock->so_snd_sb_state = s.so_snd.sb_state; + sock->unp_conn = (uintptr_t)unpcb.unp_conn; + } + } + break; + default: + break; + } + return (0); + +fail: + snprintf(errbuf, _POSIX2_LINE_MAX, "error"); + return (1); +} + +static int +procstat_get_socket_info_sysctl(struct filestat *fst, struct sockstat *sock, + char *errbuf __unused) +{ + struct kinfo_file *kif; + + assert(sock); + assert(fst); + bzero(sock, sizeof(*sock)); + kif = fst->fs_typedep; + if (kif == NULL) + return (0); + + /* + * Fill in known data. + */ + sock->type = kif->kf_sock_type; + sock->proto = kif->kf_sock_protocol; + sock->dom_family = kif->kf_sock_domain; + sock->so_pcb = kif->kf_un.kf_sock.kf_sock_pcb; + strlcpy(sock->dname, kif->kf_path, sizeof(sock->dname)); + bcopy(&kif->kf_sa_local, &sock->sa_local, kif->kf_sa_local.ss_len); + bcopy(&kif->kf_sa_peer, &sock->sa_peer, kif->kf_sa_peer.ss_len); + + /* + * Protocol specific data. + */ + switch(sock->dom_family) { + case AF_INET: + case AF_INET6: + if (sock->proto == IPPROTO_TCP) + sock->inp_ppcb = kif->kf_un.kf_sock.kf_sock_inpcb; + break; + case AF_UNIX: + if (kif->kf_un.kf_sock.kf_sock_unpconn != 0) { + sock->so_rcv_sb_state = + kif->kf_un.kf_sock.kf_sock_rcv_sb_state; + sock->so_snd_sb_state = + kif->kf_un.kf_sock.kf_sock_snd_sb_state; + sock->unp_conn = + kif->kf_un.kf_sock.kf_sock_unpconn; + } + break; + default: + break; + } + return (0); +} + +/* + * Descriptor flags to filestat translation. + */ +static int +to_filestat_flags(int flags) +{ + static struct { + int flag; + int fst_flag; + } fstflags[] = { + { FREAD, PS_FST_FFLAG_READ }, + { FWRITE, PS_FST_FFLAG_WRITE }, + { O_APPEND, PS_FST_FFLAG_APPEND }, + { O_ASYNC, PS_FST_FFLAG_ASYNC }, + { O_CREAT, PS_FST_FFLAG_CREAT }, + { O_DIRECT, PS_FST_FFLAG_DIRECT }, + { O_EXCL, PS_FST_FFLAG_EXCL }, + { O_EXEC, PS_FST_FFLAG_EXEC }, + { O_EXLOCK, PS_FST_FFLAG_EXLOCK }, + { O_NOFOLLOW, PS_FST_FFLAG_NOFOLLOW }, + { O_NONBLOCK, PS_FST_FFLAG_NONBLOCK }, + { O_SHLOCK, PS_FST_FFLAG_SHLOCK }, + { O_SYNC, PS_FST_FFLAG_SYNC }, + { O_TRUNC, PS_FST_FFLAG_TRUNC } + }; +#define NFSTFLAGS (sizeof(fstflags) / sizeof(*fstflags)) + int fst_flags; + unsigned int i; + + fst_flags = 0; + for (i = 0; i < NFSTFLAGS; i++) + if (flags & fstflags[i].flag) + fst_flags |= fstflags[i].fst_flag; + return (fst_flags); +} + +/* + * Vnode type to filestate translation. + */ +static int +vntype2psfsttype(int type) +{ + static struct { + int vtype; + int fst_vtype; + } vt2fst[] = { + { VBAD, PS_FST_VTYPE_VBAD }, + { VBLK, PS_FST_VTYPE_VBLK }, + { VCHR, PS_FST_VTYPE_VCHR }, + { VDIR, PS_FST_VTYPE_VDIR }, + { VFIFO, PS_FST_VTYPE_VFIFO }, + { VLNK, PS_FST_VTYPE_VLNK }, + { VNON, PS_FST_VTYPE_VNON }, + { VREG, PS_FST_VTYPE_VREG }, + { VSOCK, PS_FST_VTYPE_VSOCK } + }; +#define NVFTYPES (sizeof(vt2fst) / sizeof(*vt2fst)) + unsigned int i, fst_type; + + fst_type = PS_FST_VTYPE_UNKNOWN; + for (i = 0; i < NVFTYPES; i++) { + if (type == vt2fst[i].vtype) { + fst_type = vt2fst[i].fst_vtype; + break; + } + } + return (fst_type); +} + +static char * +getmnton(kvm_t *kd, struct mount *m) +{ + static struct mount mnt; + static struct mtab { + struct mtab *next; + struct mount *m; + char mntonname[MNAMELEN + 1]; + } *mhead = NULL; + struct mtab *mt; + + for (mt = mhead; mt != NULL; mt = mt->next) + if (m == mt->m) + return (mt->mntonname); + if (!kvm_read_all(kd, (unsigned long)m, &mnt, sizeof(struct mount))) { + warnx("can't read mount table at %p", (void *)m); + return (NULL); + } + if ((mt = malloc(sizeof (struct mtab))) == NULL) + err(1, NULL); + mt->m = m; + bcopy(&mnt.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN); + mnt.mnt_stat.f_mntonname[MNAMELEN] = '\0'; + mt->next = mhead; + mhead = mt; + return (mt->mntonname); +} |