diff options
Diffstat (limited to 'man7/sock_diag.7')
| -rw-r--r-- | man7/sock_diag.7 | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/man7/sock_diag.7 b/man7/sock_diag.7 index a279e787a..adf47b7b5 100644 --- a/man7/sock_diag.7 +++ b/man7/sock_diag.7 @@ -2,7 +2,7 @@ .\" Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> .\" .\" SPDX-License-Identifier: GPL-2.0-or-later -.TH sock_diag 7 2023-02-05 "Linux man-pages 6.03" +.TH sock_diag 7 2023-05-03 "Linux man-pages 6.05.01" .SH NAME sock_diag \- obtaining information about sockets .SH SYNOPSIS @@ -482,9 +482,9 @@ struct inet_diag_msg { __u8 idiag_state; __u8 idiag_timer; __u8 idiag_retrans; - +\& struct inet_diag_sockid id; - +\& __u32 idiag_expires; __u32 idiag_rqueue; __u32 idiag_wqueue; @@ -617,7 +617,7 @@ and .B INET_DIAG_SKMEMINFO were introduced in Linux 3.6. .SH STANDARDS -The NETLINK_SOCK_DIAG API is Linux-specific. +Linux. .SH EXAMPLES The following example program prints inode number, peer's inode number, and name of all UNIX domain sockets in the current namespace. @@ -633,7 +633,7 @@ and name of all UNIX domain sockets in the current namespace. #include <linux/rtnetlink.h> #include <linux/sock_diag.h> #include <linux/unix_diag.h> - +\& static int send_query(int fd) { @@ -666,20 +666,20 @@ send_query(int fd) .msg_iov = &iov, .msg_iovlen = 1 }; - +\& for (;;) { if (sendmsg(fd, &msg, 0) < 0) { if (errno == EINTR) continue; - +\& perror("sendmsg"); return \-1; } - +\& return 0; } } - +\& static int print_diag(const struct unix_diag_msg *diag, unsigned int len) { @@ -691,12 +691,12 @@ print_diag(const struct unix_diag_msg *diag, unsigned int len) fprintf(stderr, "unexpected family %u\en", diag\->udiag_family); return \-1; } - +\& unsigned int rta_len = len \- NLMSG_LENGTH(sizeof(*diag)); unsigned int peer = 0; size_t path_len = 0; char path[sizeof(((struct sockaddr_un *) 0)\->sun_path) + 1]; - +\& for (struct rtattr *attr = (struct rtattr *) (diag + 1); RTA_OK(attr, rta_len); attr = RTA_NEXT(attr, rta_len)) { switch (attr\->rta_type) { @@ -709,27 +709,27 @@ print_diag(const struct unix_diag_msg *diag, unsigned int len) path[path_len] = \[aq]\e0\[aq]; } break; - +\& case UNIX_DIAG_PEER: if (RTA_PAYLOAD(attr) >= sizeof(peer)) peer = *(unsigned int *) RTA_DATA(attr); break; } } - +\& printf("inode=%u", diag\->udiag_ino); - +\& if (peer) printf(", peer=%u", peer); - +\& if (path_len) printf(", name=%s%s", *path ? "" : "@", *path ? path : path + 1); - +\& putchar(\[aq]\en\[aq]); return 0; } - +\& static int receive_responses(int fd) { @@ -740,7 +740,7 @@ receive_responses(int fd) .iov_len = sizeof(buf) }; int flags = 0; - +\& for (;;) { struct msghdr msg = { .msg_name = &nladdr, @@ -748,72 +748,72 @@ receive_responses(int fd) .msg_iov = &iov, .msg_iovlen = 1 }; - +\& ssize_t ret = recvmsg(fd, &msg, flags); - +\& if (ret < 0) { if (errno == EINTR) continue; - +\& perror("recvmsg"); return \-1; } if (ret == 0) return 0; - +\& if (nladdr.nl_family != AF_NETLINK) { fputs("!AF_NETLINK\en", stderr); return \-1; } - +\& const struct nlmsghdr *h = (struct nlmsghdr *) buf; - +\& if (!NLMSG_OK(h, ret)) { fputs("!NLMSG_OK\en", stderr); return \-1; } - +\& for (; NLMSG_OK(h, ret); h = NLMSG_NEXT(h, ret)) { if (h\->nlmsg_type == NLMSG_DONE) return 0; - +\& if (h\->nlmsg_type == NLMSG_ERROR) { const struct nlmsgerr *err = NLMSG_DATA(h); - +\& if (h\->nlmsg_len < NLMSG_LENGTH(sizeof(*err))) { fputs("NLMSG_ERROR\en", stderr); } else { errno = \-err\->error; perror("NLMSG_ERROR"); } - +\& return \-1; } - +\& if (h\->nlmsg_type != SOCK_DIAG_BY_FAMILY) { fprintf(stderr, "unexpected nlmsg_type %u\en", (unsigned) h\->nlmsg_type); return \-1; } - +\& if (print_diag(NLMSG_DATA(h), h\->nlmsg_len)) return \-1; } } } - +\& int main(void) { int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_SOCK_DIAG); - +\& if (fd < 0) { perror("socket"); return 1; } - +\& int ret = send_query(fd) || receive_responses(fd); - +\& close(fd); return ret; } |