#pragma prototyped

static const char usage[] =

"When invoked as a shell builtin it accesses the file descriptors of the "

"calling shell, otherwise it lists the file descriptors passed across "

"\bexec\b(2).]"

;

#include <cmd.h>

#include <ls.h>

#include "FEATURE/sockets"

#if defined(S_IFSOCK) && _sys_socket && _hdr_arpa_inet && _hdr_netinet_in && _lib_getsockname && _lib_getsockopt && _lib_inet_ntoa

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#else

#undef S_IFSOCK

#endif

#ifndef minor

#define minor(x) (int)((x)&0xff)

#endif

#ifndef major

#define major(x) (int)(((unsigned int)(x)>>8)&0xff)

#endif

#undef getconf

#define getconf(x) strtol(astconf(x,NiL,NiL),NiL,0)

#ifdef S_IFSOCK

typedef struct NV_s

{

const char* name;

int value;

} NV_t;

static const NV_t family[] =

{

#ifdef AF_LOCAL

"pipe", AF_LOCAL,

#endif

#ifdef AF_UNIX

"pipe", AF_UNIX,

#endif

#ifdef AF_FILE

"FILE", AF_FILE,

#endif

#ifdef AF_INET

"INET", AF_INET,

#endif

#ifdef AF_AX25

"AX25", AF_AX25,

#endif

#ifdef AF_IPX

"IPX", AF_IPX,

#endif

#ifdef AF_APPLETALK

"APPLETALK", AF_APPLETALK,

#endif

#ifdef AF_NETROM

"NETROM", AF_NETROM,

#endif

#ifdef AF_BRIDGE

"BRIDGE", AF_BRIDGE,

#endif

#ifdef AF_ATMPVC

"ATMPVC", AF_ATMPVC,

#endif

#ifdef AF_X25

"X25", AF_X25,

#endif

#ifdef AF_INET6

"INET6", AF_INET6,

#endif

#ifdef AF_ROSE

"ROSE", AF_ROSE,

#endif

#ifdef AF_DECnet

"DECnet", AF_DECnet,

#endif

#ifdef AF_NETBEUI

"NETBEUI", AF_NETBEUI,

#endif

#ifdef AF_SECURITY

"SECURITY", AF_SECURITY,

#endif

#ifdef AF_KEY

"KEY", AF_KEY,

#endif

#ifdef AF_NETLINK

"NETLINK", AF_NETLINK,

#endif

#ifdef AF_ROUTE

"ROUTE", AF_ROUTE,

#endif

#ifdef AF_PACKET

"PACKET", AF_PACKET,

#endif

#ifdef AF_ASH

"ASH", AF_ASH,

#endif

#ifdef AF_ECONET

"ECONET", AF_ECONET,

#endif

#ifdef AF_ATMSVC

"ATMSVC", AF_ATMSVC,

#endif

#ifdef AF_SNA

"SNA", AF_SNA,

#endif

#ifdef AF_IRDA

"IRDA", AF_IRDA,

#endif

#ifdef AF_PPPOX

"PPPOX", AF_PPPOX,

#endif

#ifdef AF_WANPIPE

"WANPIPE", AF_WANPIPE,

#endif

#ifdef AF_BLUETOOTH

"BLUETOOTH", AF_BLUETOOTH,

#endif

0

};

#endif

b_fds(int argc, char** argv, Shbltin_t* context)

{

register char* s;

register int i;

register char* m;

register char* x;

int flags;

int details;

int open_max;

int unit;

Sfio_t* sp;

struct stat st;

#ifdef S_IFSOCK

struct sockaddr_in addr;

char* a;

unsigned char* b;

unsigned char* e;

socklen_t addrlen;

socklen_t len;

int type;

int port;

int prot;

char num[64];

char fam[64];

#ifdef INET6_ADDRSTRLEN

char nam[256];

#endif

#endif

cmdinit(argc, argv, context, ERROR_CATALOG, 0);

details = 0;

unit = 1;

for (;;)

{

switch (optget(argv, usage))

{

case 'l':

details = opt_info.num;

continue;

case 'u':

unit = opt_info.num;

continue;

case '?':

error(ERROR_USAGE|4, "%s", opt_info.arg);

break;

case ':':

error(2, "%s", opt_info.arg);

break;

}

break;

}

argv += opt_info.index;

if (error_info.errors || *argv)

error(ERROR_USAGE|4, "%s", optusage(NiL));

if ((open_max = getconf("OPEN_MAX")) <= 0)

open_max = OPEN_MAX;

if (unit == 1)

sp = sfstdout;

else if (fstat(unit, &st) || !(sp = sfnew(NiL, NiL, SF_UNBOUND, unit, SF_WRITE)))

error(ERROR_SYSTEM|3, "%d: cannot write to file descriptor");

for (i = 0; i <= open_max; i++)

{

if (fstat(i, &st))

{

/* not open */

continue;

}

if (!details)

{

sfprintf(sp, "%d\n", i);

continue;

}

if ((flags = fcntl(i, F_GETFL, (char*)0)) == -1)

m = "--";

else

switch (flags & (O_RDONLY|O_WRONLY|O_RDWR))

{

case O_RDONLY:

m = "r-";

break;

case O_WRONLY:

m = "-w";

break;

case O_RDWR:

m = "rw";

break;

default:

m = "??";

break;

}

x = (fcntl(i, F_GETFD, (char*)0) > 0) ? "x" : "-";

if (isatty(i) && (s = ttyname(i)))

{

sfprintf(sp, "%02d %s%s %s %s\n", i, m, x, fmtmode(st.st_mode, 0), s);

continue;

}

#ifdef S_IFSOCK

addrlen = sizeof(addr);

memset(&addr, 0, addrlen);

if (!getsockname(i, (struct sockaddr*)&addr, (void*)&addrlen))

{

type = 0;

prot = 0;

#ifdef SO_TYPE

len = sizeof(type);

if (getsockopt(i, SOL_SOCKET, SO_TYPE, (void*)&type, (void*)&len))

type = -1;

#endif

#ifdef SO_PROTOTYPE

len = sizeof(prot);

if (getsockopt(i, SOL_SOCKET, SO_PROTOTYPE, (void*)&prot, (void*)&len))

prot = -1;

#endif

if (!st.st_mode)

st.st_mode = S_IFSOCK|S_IRUSR|S_IWUSR;

s = 0;

switch (type)

{

case SOCK_DGRAM:

switch (addr.sin_family)

{

case AF_INET:

#ifdef AF_INET6

case AF_INET6:

#endif

s = "udp";

break;

}

break;

case SOCK_STREAM:

switch (addr.sin_family)

{

case AF_INET:

#ifdef AF_INET6

case AF_INET6:

#endif

#ifdef IPPROTO_SCTP

if (prot == IPPROTO_SCTP)

s = "sctp";

else

#endif

s = "tcp";

break;

}

break;

#ifdef SOCK_RAW

case SOCK_RAW:

s = "raw";

break;

#endif

#ifdef SOCK_RDM

case SOCK_RDM:

s = "rdm";

break;

#endif

#ifdef SOCK_SEQPACKET

case SOCK_SEQPACKET:

s = "seqpacket";

break;

#endif

}

if (!s)

{

for (type = 0; family[type].name && family[type].value != addr.sin_family; type++);

if (!(s = (char*)family[type].name))

sfsprintf(s = num, sizeof(num), "family.%d", addr.sin_family);

}

port = 0;

#ifdef INET6_ADDRSTRLEN

if (a = (char*)inet_ntop(addr.sin_family, &addr.sin_addr, nam, sizeof(nam)))

port = ntohs(addr.sin_port);

else

#endif

if (addr.sin_family == AF_INET)

{

a = inet_ntoa(addr.sin_addr);

port = ntohs(addr.sin_port);

}

else

{

a = fam;

e = (b = (unsigned char*)&addr) + addrlen;

while (b < e && a < &fam[sizeof(fam)-1])

a += sfsprintf(a, &fam[sizeof(fam)] - a - 1, ".%d", *b++);

a = a == fam ? "0" : fam + 1;

}

if (port)

sfprintf(sp, "%02d %s%s %s /dev/%s/%s/%d\n", i, m, x, fmtmode(st.st_mode, 0), s, a, port);

else

sfprintf(sp, "%02d %s%s %s /dev/%s/%s\n", i, m, x, fmtmode(st.st_mode, 0), s, a);

continue;

}

#endif

sfprintf(sp, "%02d %s%s %s /dev/inode/%u/%u\n", i, m, x, fmtmode(st.st_mode, 0), st.st_dev, st.st_ino);

}

if (sp != sfstdout)

{

sfsetfd(sp, -1);

sfclose(sp);

}

return 0;

}