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Annotation of 43BSD/ucb/netstat/unix.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)unix.c     5.3 (Berkeley) 5/8/86";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * Display protocol blocks in the unix domain.
        !            13:  */
        !            14: #include <sys/param.h>
        !            15: #include <sys/protosw.h>
        !            16: #include <sys/socket.h>
        !            17: #include <sys/socketvar.h>
        !            18: #include <sys/mbuf.h>
        !            19: #include <sys/un.h>
        !            20: #include <sys/unpcb.h>
        !            21: #define        KERNEL
        !            22: #include <sys/file.h>
        !            23: 
        !            24: int    Aflag;
        !            25: int    kmem;
        !            26: 
        !            27: unixpr(nfileaddr, fileaddr, unixsw)
        !            28:        off_t nfileaddr, fileaddr;
        !            29:        struct protosw *unixsw;
        !            30: {
        !            31:        register struct file *fp;
        !            32:        struct file *filep;
        !            33:        struct socket sock, *so = &sock;
        !            34: 
        !            35:        if (nfileaddr == 0 || fileaddr == 0) {
        !            36:                printf("nfile or file not in namelist.\n");
        !            37:                return;
        !            38:        }
        !            39:        klseek(kmem, nfileaddr, L_SET);
        !            40:        if (read(kmem, &nfile, sizeof (nfile)) != sizeof (nfile)) {
        !            41:                printf("nfile: bad read.\n");
        !            42:                return;
        !            43:        }
        !            44:        klseek(kmem, fileaddr, L_SET);
        !            45:        if (read(kmem, &filep, sizeof (filep)) != sizeof (filep)) {
        !            46:                printf("File table address, bad read.\n");
        !            47:                return;
        !            48:        }
        !            49:        file = (struct file *)calloc(nfile, sizeof (struct file));
        !            50:        if (file == (struct file *)0) {
        !            51:                printf("Out of memory (file table).\n");
        !            52:                return;
        !            53:        }
        !            54:        klseek(kmem, (off_t)filep, L_SET);
        !            55:        if (read(kmem, file, nfile * sizeof (struct file)) !=
        !            56:            nfile * sizeof (struct file)) {
        !            57:                printf("File table read error.\n");
        !            58:                return;
        !            59:        }
        !            60:        fileNFILE = file + nfile;
        !            61:        for (fp = file; fp < fileNFILE; fp++) {
        !            62:                if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET)
        !            63:                        continue;
        !            64:                klseek(kmem, fp->f_data, L_SET);
        !            65:                if (read(kmem, so, sizeof (*so)) != sizeof (*so))
        !            66:                        continue;
        !            67:                /* kludge */
        !            68:                if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2)
        !            69:                        if (so->so_pcb)
        !            70:                                unixdomainpr(so, fp->f_data);
        !            71:        }
        !            72:        free((char *)file);
        !            73: }
        !            74: 
        !            75: static char *socktype[] =
        !            76:     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
        !            77: 
        !            78: unixdomainpr(so, soaddr)
        !            79:        register struct socket *so;
        !            80:        caddr_t soaddr;
        !            81: {
        !            82:        struct unpcb unpcb, *unp = &unpcb;
        !            83:        struct mbuf mbuf, *m;
        !            84:        struct sockaddr_un *sa;
        !            85:        static int first = 1;
        !            86: 
        !            87:        klseek(kmem, so->so_pcb, L_SET);
        !            88:        if (read(kmem, unp, sizeof (*unp)) != sizeof (*unp))
        !            89:                return;
        !            90:        if (unp->unp_addr) {
        !            91:                m = &mbuf;
        !            92:                klseek(kmem, unp->unp_addr, L_SET);
        !            93:                if (read(kmem, m, sizeof (*m)) != sizeof (*m))
        !            94:                        m = (struct mbuf *)0;
        !            95:                sa = mtod(m, struct sockaddr_un *);
        !            96:        } else
        !            97:                m = (struct mbuf *)0;
        !            98:        if (first) {
        !            99:                printf("Active UNIX domain sockets\n");
        !           100:                printf(
        !           101: "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
        !           102:                    "Address", "Type", "Recv-Q", "Send-Q",
        !           103:                    "Inode", "Conn", "Refs", "Nextref");
        !           104:                first = 0;
        !           105:        }
        !           106:        printf("%8x %-6.6s %6d %6d %8x %8x %8x %8x",
        !           107:            soaddr, socktype[so->so_type], so->so_rcv.sb_cc, so->so_snd.sb_cc,
        !           108:            unp->unp_inode, unp->unp_conn,
        !           109:            unp->unp_refs, unp->unp_nextref);
        !           110:        if (m)
        !           111:                printf(" %.*s", m->m_len - sizeof(sa->sun_family),
        !           112:                    sa->sun_path);
        !           113:        putchar('\n');
        !           114: }

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