diff options
Diffstat (limited to 'usr.bin/kdump/ktrstruct.c')
| -rw-r--r-- | usr.bin/kdump/ktrstruct.c | 101 |
1 files changed, 100 insertions, 1 deletions
diff --git a/usr.bin/kdump/ktrstruct.c b/usr.bin/kdump/ktrstruct.c index b218ee2027e..2fc328d7c68 100644 --- a/usr.bin/kdump/ktrstruct.c +++ b/usr.bin/kdump/ktrstruct.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ktrstruct.c,v 1.9 2014/12/16 03:19:23 jsg Exp $ */ +/* $OpenBSD: ktrstruct.c,v 1.10 2015/07/28 05:50:41 guenther Exp $ */ /*- * Copyright (c) 1988, 1993 @@ -42,6 +42,7 @@ #include <ctype.h> #include <err.h> #include <limits.h> +#include <netdb.h> #include <poll.h> #include <signal.h> #include <stdio.h> @@ -364,6 +365,84 @@ ktrquota(const struct dqblk *quota) printf(" }\n"); } +static void +ktrmsghdr(const struct msghdr *msg) +{ + printf("struct msghdr { name=%p, namelen=%u, iov=%p, iovlen=%u," + " control=%p, controllen=%u, flags=%d }\n", + msg->msg_name, msg->msg_namelen, msg->msg_iov, msg->msg_iovlen, + msg->msg_control, msg->msg_controllen, msg->msg_flags); +} + +static void +ktriovec(const char *data, int count) +{ + struct iovec iov; + int i; + + printf("struct iovec"); + if (count > 1) + printf(" [%d]", count); + for (i = 0; i < count; i++) { + memcpy(&iov, data, sizeof(iov)); + data += sizeof(iov); + printf(" { base=%p, len=%lu }", iov.iov_base, iov.iov_len); + } + printf("\n"); +} + +static void +ktrcmsghdr(char *data, socklen_t len) +{ + struct msghdr msg; + struct cmsghdr *cmsg; + int i, count, *fds; + + msg.msg_control = data; + msg.msg_controllen = len; + + /* count the control messages */ + count = 0; + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; + cmsg = CMSG_NXTHDR(&msg, cmsg)) { + count++; + } + + printf("struct cmsghdr"); + if (count > 1) + printf(" [%d]", count); + + for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; + cmsg = CMSG_NXTHDR(&msg, cmsg)) { + printf(" { len=%u, level=", cmsg->cmsg_len); + if (cmsg->cmsg_level == SOL_SOCKET) { + printf("SOL_SOCKET, type="); + switch (cmsg->cmsg_type) { + case SCM_RIGHTS: + printf("SCM_RIGHTS, data="); + fds = (int *)CMSG_DATA(cmsg); + for (i = 0; + cmsg->cmsg_len > CMSG_LEN(sizeof(int) * i); + i++) { + printf("%s%d", i ? "," : "", fds[i]); + } + break; + case SCM_TIMESTAMP: + default: + printf("%d", cmsg->cmsg_type); + break; + } + } else { + struct protoent *p = getprotobynumber(cmsg->cmsg_level); + + printf("%u<%s>, type=%d", cmsg->cmsg_level, + p != NULL ? p->p_name : "unknown", cmsg->cmsg_type); + } + printf(" }"); + } + printf("\n"); +} + void ktrstruct(char *buf, size_t buflen) { @@ -449,6 +528,7 @@ ktrstruct(char *buf, size_t buflen) ktrtfork(&tf); } else if (strcmp(name, "fdset") == 0) { struct fd_set *fds; + if ((fds = malloc(datalen)) == NULL) err(1, "malloc"); memcpy(fds, data, datalen); @@ -461,6 +541,25 @@ ktrstruct(char *buf, size_t buflen) goto invalid; memcpy("a, data, datalen); ktrquota("a); + } else if (strcmp(name, "msghdr") == 0) { + struct msghdr msg; + + if (datalen != sizeof(msg)) + goto invalid; + memcpy(&msg, data, datalen); + ktrmsghdr(&msg); + } else if (strcmp(name, "iovec") == 0) { + if (datalen % sizeof(struct iovec)) + goto invalid; + ktriovec(data, datalen / sizeof(struct iovec)); + } else if (strcmp(name, "cmsghdr") == 0) { + char *cmsg; + + if ((cmsg = malloc(datalen)) == NULL) + err(1, "malloc"); + memcpy(cmsg, data, datalen); + ktrcmsghdr(cmsg, datalen); + free(cmsg); } else { printf("unknown structure %s\n", name); } |