/* Asynchronous subprocess control for GNU Emacs.
-Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2011
+Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2012
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#endif
#include <sys/ioctl.h>
-#if defined(HAVE_NET_IF_H)
+#if defined (HAVE_NET_IF_H)
#include <net/if.h>
#endif /* HAVE_NET_IF_H */
+#if defined (HAVE_IFADDRS_H)
+/* Must be after net/if.h */
+#include <ifaddrs.h>
+
+/* We only use structs from this header when we use getifaddrs. */
+#if defined (HAVE_NET_IF_DL_H)
+#include <net/if_dl.h>
+#endif
+
+#endif
+
#ifdef NEED_BSDTTY
#include <bsdtty.h>
#endif
#include "nsterm.h"
#endif
+/* Work around GCC 4.7.0 bug with strict overflow checking; see
+ <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
+ These lines can be removed once the GCC bug is fixed. */
+#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__
+# pragma GCC diagnostic ignored "-Wstrict-overflow"
+#endif
+
Lisp_Object Qeuid, Qegid, Qcomm, Qstate, Qppid, Qpgrp, Qsess, Qttname, Qtpgid;
Lisp_Object Qminflt, Qmajflt, Qcminflt, Qcmajflt, Qutime, Qstime, Qcstime;
Lisp_Object Qcutime, Qpri, Qnice, Qthcount, Qstart, Qvsize, Qrss, Qargs;
/* If we support a window system, turn on the code to poll periodically
to detect C-g. It isn't actually used when doing interrupt input. */
-#if defined(HAVE_WINDOW_SYSTEM) && !defined(USE_ASYNC_EVENTS)
+#if defined (HAVE_WINDOW_SYSTEM) && !defined (USE_ASYNC_EVENTS)
#define POLL_FOR_INPUT
#endif
{
register Lisp_Object val, tem, name1;
register struct Lisp_Process *p;
- char suffix[10];
- register int i;
+ char suffix[sizeof "<>" + INT_STRLEN_BOUND (printmax_t)];
+ printmax_t i;
p = allocate_process ();
p->gnutls_initstage = GNUTLS_STAGE_EMPTY;
p->gnutls_log_level = 0;
p->gnutls_p = 0;
+ p->gnutls_state = NULL;
+ p->gnutls_x509_cred = NULL;
+ p->gnutls_anon_cred = NULL;
#endif
/* If name is already in use, modify it until it is unused. */
{
tem = Fget_process (name1);
if (NILP (tem)) break;
- sprintf (suffix, "<%d>", i);
+ sprintf (suffix, "<%"pMd">", i);
name1 = concat2 (name, build_string (suffix));
}
name = name1;
val = XCDR (Vdefault_process_coding_system);
}
XPROCESS (proc)->encode_coding_system = val;
- /* Note: At this momemnt, the above coding system may leave
+ /* Note: At this moment, the above coding system may leave
text-conversion or eol-conversion unspecified. They will be
decided after we read output from the process and decode it by
some coding system, or just before we actually send a text to
if (!PROCESSP (proc))
abort ();
- /* Was PROC started successfully? */
- if (XPROCESS (proc)->pid == -1)
+ /* Was PROC started successfully?
+ -2 is used for a pty with no process, eg for gdb. */
+ if (XPROCESS (proc)->pid <= 0 && XPROCESS (proc)->pid != -2)
remove_process (proc);
return Qnil;
XPROCESS (process)->pty_flag = pty_flag;
XPROCESS (process)->status = Qrun;
- setup_process_coding_systems (process);
/* Delay interrupts until we have a chance to store
the new fork's pid in its process structure */
processes to get their return values scrambled. */
XPROCESS (process)->pid = -1;
+ /* This must be called after the above line because it may signal an
+ error. */
+ setup_process_coding_systems (process);
+
BLOCK_INPUT;
{
{
/* Don't support network sockets when non-blocking mode is
not available, since a blocked Emacs is not useful. */
-#if !defined(O_NONBLOCK) && !defined(O_NDELAY)
+#if !defined (O_NONBLOCK) && !defined (O_NDELAY)
error ("Network servers not supported");
#else
is_server = 1;
tem = Fplist_get (contact, QCfamily);
if (NILP (tem))
{
-#if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
+#if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
family = AF_UNSPEC;
#else
family = AF_INET;
{
struct hostent *host_info_ptr;
- /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
+ /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
as it may `hang' Emacs for a very long time. */
immediate_quit = 1;
QUIT;
{
/* Setup coding systems for communicating with the network stream. */
- struct gcpro inner_gcpro1;
+ struct gcpro gcpro1;
/* Qt denotes we have not yet called Ffind_operation_coding_system. */
Lisp_Object coding_systems = Qt;
Lisp_Object fargs[5], val;
|| (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters))))
/* We dare not decode end-of-line format by setting VAL to
Qraw_text, because the existing Emacs Lisp libraries
- assume that they receive bare code including a sequene of
+ assume that they receive bare code including a sequence of
CR LF. */
val = Qnil;
else
{
fargs[0] = Qopen_network_stream, fargs[1] = name,
fargs[2] = buffer, fargs[3] = host, fargs[4] = service;
- GCPRO1_VAR (proc, inner_gcpro);
+ GCPRO1 (proc);
coding_systems = Ffind_operation_coding_system (5, fargs);
- UNGCPRO_VAR (inner_gcpro);
+ UNGCPRO;
}
if (CONSP (coding_systems))
val = XCAR (coding_systems);
{
fargs[0] = Qopen_network_stream, fargs[1] = name,
fargs[2] = buffer, fargs[3] = host, fargs[4] = service;
- GCPRO1_VAR (proc, inner_gcpro);
+ GCPRO1 (proc);
coding_systems = Ffind_operation_coding_system (5, fargs);
- UNGCPRO_VAR (inner_gcpro);
+ UNGCPRO;
}
}
if (CONSP (coding_systems))
}
\f
-#if defined(HAVE_NET_IF_H)
+#if defined (HAVE_NET_IF_H)
#ifdef SIOCGIFCONF
DEFUN ("network-interface-list", Fnetwork_interface_list, Snetwork_interface_list, 0, 0, 0,
(void)
{
struct ifconf ifconf;
- struct ifreq *ifreqs = NULL;
- int ifaces = 0;
- int buf_size, s;
+ struct ifreq *ifreq;
+ void *buf = NULL;
+ ptrdiff_t buf_size = 512;
+ int s, i;
Lisp_Object res;
s = socket (AF_INET, SOCK_STREAM, 0);
if (s < 0)
return Qnil;
- again:
- ifaces += 25;
- buf_size = ifaces * sizeof (ifreqs[0]);
- ifreqs = (struct ifreq *)xrealloc(ifreqs, buf_size);
- if (!ifreqs)
+ do
{
- close (s);
- return Qnil;
- }
-
- ifconf.ifc_len = buf_size;
- ifconf.ifc_req = ifreqs;
- if (ioctl (s, SIOCGIFCONF, &ifconf))
- {
- close (s);
- return Qnil;
+ buf = xpalloc (buf, &buf_size, 1, INT_MAX, 1);
+ ifconf.ifc_buf = buf;
+ ifconf.ifc_len = buf_size;
+ if (ioctl (s, SIOCGIFCONF, &ifconf))
+ {
+ close (s);
+ xfree (buf);
+ return Qnil;
+ }
}
-
- if (ifconf.ifc_len == buf_size)
- goto again;
+ while (ifconf.ifc_len == buf_size);
close (s);
- ifaces = ifconf.ifc_len / sizeof (ifreqs[0]);
res = Qnil;
- while (--ifaces >= 0)
+ ifreq = ifconf.ifc_req;
+ while ((char *) ifreq < (char *) ifconf.ifc_req + ifconf.ifc_len)
{
- struct ifreq *ifq = &ifreqs[ifaces];
+ struct ifreq *ifq = ifreq;
+#ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
+#define SIZEOF_IFREQ(sif) \
+ ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
+ ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
+
+ int len = SIZEOF_IFREQ (ifq);
+#else
+ int len = sizeof (*ifreq);
+#endif
char namebuf[sizeof (ifq->ifr_name) + 1];
+ i += len;
+ ifreq = (struct ifreq *) ((char *) ifreq + len);
+
if (ifq->ifr_addr.sa_family != AF_INET)
continue;
+
memcpy (namebuf, ifq->ifr_name, sizeof (ifq->ifr_name));
namebuf[sizeof (ifq->ifr_name)] = 0;
res = Fcons (Fcons (build_string (namebuf),
res);
}
+ xfree (buf);
return res;
}
#endif /* SIOCGIFCONF */
-#if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
+#if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
struct ifflag_def {
int flag_bit;
{ IFF_PROMISC, "promisc" },
#endif
#ifdef IFF_NOTRAILERS
+#ifdef NS_IMPL_COCOA
+ /* Really means smart, notrailers is obsolete */
+ { IFF_NOTRAILERS, "smart" },
+#else
{ IFF_NOTRAILERS, "notrailers" },
#endif
+#endif
#ifdef IFF_ALLMULTI
{ IFF_ALLMULTI, "allmulti" },
#endif
doc: /* Return information about network interface named IFNAME.
The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
-NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
+NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
FLAGS is the current flags of the interface. */)
(Lisp_Object ifname)
{
Lisp_Object elt;
int s;
int any = 0;
+#if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
+ && defined HAVE_GETIFADDRS && defined LLADDR)
+ struct ifaddrs *ifap;
+#endif
CHECK_STRING (ifname);
return Qnil;
elt = Qnil;
-#if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
+#if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
if (ioctl (s, SIOCGIFFLAGS, &rq) == 0)
{
int flags = rq.ifr_flags;
const struct ifflag_def *fp;
int fnum;
+ /* If flags is smaller than int (i.e. short) it may have the high bit set
+ due to IFF_MULTICAST. In that case, sign extending it into
+ an int is wrong. */
+ if (flags < 0 && sizeof (rq.ifr_flags) < sizeof (flags))
+ flags = (unsigned short) rq.ifr_flags;
+
any = 1;
for (fp = ifflag_table; flags != 0 && fp->flag_sym; fp++)
{
res = Fcons (elt, res);
elt = Qnil;
-#if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
+#if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
if (ioctl (s, SIOCGIFHWADDR, &rq) == 0)
{
Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil);
p->contents[n] = make_number (((unsigned char *)&rq.ifr_hwaddr.sa_data[0])[n]);
elt = Fcons (make_number (rq.ifr_hwaddr.sa_family), hwaddr);
}
+#elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
+ if (getifaddrs (&ifap) != -1)
+ {
+ Lisp_Object hwaddr = Fmake_vector (make_number (6), Qnil);
+ register struct Lisp_Vector *p = XVECTOR (hwaddr);
+ struct ifaddrs *it;
+
+ for (it = ifap; it != NULL; it = it->ifa_next)
+ {
+ struct sockaddr_dl *sdl = (struct sockaddr_dl*) it->ifa_addr;
+ unsigned char linkaddr[6];
+ int n;
+
+ if (it->ifa_addr->sa_family != AF_LINK
+ || strcmp (it->ifa_name, SSDATA (ifname)) != 0
+ || sdl->sdl_alen != 6)
+ continue;
+
+ memcpy (linkaddr, LLADDR (sdl), sdl->sdl_alen);
+ for (n = 0; n < 6; n++)
+ p->contents[n] = make_number (linkaddr[n]);
+
+ elt = Fcons (make_number (it->ifa_addr->sa_family), hwaddr);
+ break;
+ }
+ }
+#ifdef HAVE_FREEIFADDRS
+ freeifaddrs (ifap);
#endif
+
+#endif /* HAVE_GETIFADDRS && LLADDR */
+
res = Fcons (elt, res);
elt = Qnil;
-#if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
+#if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
if (ioctl (s, SIOCGIFNETMASK, &rq) == 0)
{
any = 1;
res = Fcons (elt, res);
elt = Qnil;
-#if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
+#if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
if (ioctl (s, SIOCGIFBRDADDR, &rq) == 0)
{
any = 1;
res = Fcons (elt, res);
elt = Qnil;
-#if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
+#if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
if (ioctl (s, SIOCGIFADDR, &rq) == 0)
{
any = 1;
return any ? res : Qnil;
}
#endif
-#endif /* defined(HAVE_NET_IF_H) */
+#endif /* defined (HAVE_NET_IF_H) */
/* Turn off input and output for process PROC. */
register int inchannel, outchannel;
register struct Lisp_Process *p = XPROCESS (proc);
+#ifdef HAVE_GNUTLS
+ /* Delete GnuTLS structures in PROC, if any. */
+ emacs_gnutls_deinit (proc);
+#endif /* HAVE_GNUTLS */
+
inchannel = p->infd;
outchannel = p->outfd;
some data in the TCP buffers so that select works, but
with custom pull/push functions we need to check if some
data is available in the buffers manually. */
- if (nfds == 0 &&
- wait_proc && wait_proc->gnutls_p /* Check for valid process. */
- /* Do we have pending data? */
- && emacs_gnutls_record_check_pending (wait_proc->gnutls_state) > 0)
- {
- nfds = 1;
- /* Set to Available. */
- FD_SET (wait_proc->infd, &Available);
- }
+ if (nfds == 0)
+ {
+ if (! wait_proc)
+ {
+ /* We're not waiting on a specific process, so loop
+ through all the channels and check for data.
+ This is a workaround needed for some versions of
+ the gnutls library -- 2.12.14 has been confirmed
+ to need it. See
+ http://comments.gmane.org/gmane.emacs.devel/145074 */
+ for (channel = 0; channel < MAXDESC; ++channel)
+ if (! NILP (chan_process[channel]))
+ {
+ struct Lisp_Process *p =
+ XPROCESS (chan_process[channel]);
+ if (p && p->gnutls_p && p->infd
+ && ((emacs_gnutls_record_check_pending
+ (p->gnutls_state))
+ > 0))
+ {
+ nfds++;
+ FD_SET (p->infd, &Available);
+ }
+ }
+ }
+ else
+ {
+ /* Check this specific channel. */
+ if (wait_proc->gnutls_p /* Check for valid process. */
+ /* Do we have pending data? */
+ && ((emacs_gnutls_record_check_pending
+ (wait_proc->gnutls_state))
+ > 0))
+ {
+ nfds = 1;
+ /* Set to Available. */
+ FD_SET (wait_proc->infd, &Available);
+ }
+ }
+ }
#endif
}
It can't hurt. */
else if (nread == -1 && errno == EIO)
{
- /* Clear the descriptor now, so we only raise the
- signal once. Don't do this if `process' is only
- a pty. */
- if (XPROCESS (proc)->pid != -2)
- {
- FD_CLR (channel, &input_wait_mask);
- FD_CLR (channel, &non_keyboard_wait_mask);
-
- kill (getpid (), SIGCHLD);
- }
+ /* Don't do anything if only a pty, with no associated
+ process (bug#10933). */
+ if (XPROCESS (proc)->pid != -2) {
+ /* Clear the descriptor now, so we only raise the signal
+ once. */
+ FD_CLR (channel, &input_wait_mask);
+ FD_CLR (channel, &non_keyboard_wait_mask);
+
+ kill (getpid (), SIGCHLD);
+ }
}
#endif /* HAVE_PTYS */
- /* If we can detect process termination, don't consider the process
- gone just because its pipe is closed. */
+ /* If we can detect process termination, don't consider the
+ process gone just because its pipe is closed. */
#ifdef SIGCHLD
else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc))
;
proc_buffered_char[channel] = -1;
}
#ifdef HAVE_GNUTLS
- if (XPROCESS (proc)->gnutls_p)
- nbytes = emacs_gnutls_read (XPROCESS (proc),
- chars + carryover + buffered,
+ if (p->gnutls_p)
+ nbytes = emacs_gnutls_read (p, chars + carryover + buffered,
readmax - buffered);
else
#endif
p->decoding_carryover = coding->carryover_bytes;
}
if (SBYTES (text) > 0)
+ /* FIXME: It's wrong to wrap or not based on debug-on-error, and
+ sometimes it's simply wrong to wrap (e.g. when called from
+ accept-process-output). */
internal_condition_case_1 (read_process_output_call,
Fcons (outstream,
Fcons (proc, Fcons (text, Qnil))),
sending a multibyte text, thus we must encode it by the
original coding system specified for the current process.
- Another reason we comming here is that the coding system
- was just complemented and new one was returned by
+ Another reason we come here is that the coding system
+ was just complemented and a new one was returned by
complement_process_encoding_system. */
setup_coding_system (p->encode_coding_system, coding);
Vlast_coding_system_used = p->encode_coding_system;
}
else
{
+ coding->src_multibyte = 0;
/* For sending a unibyte text, character code conversion should
not take place but EOL conversion should. So, setup raw-text
or one of the subsidiary if we have not yet done it. */
#endif
{
#ifdef HAVE_GNUTLS
- if (XPROCESS (proc)->gnutls_p)
- written = emacs_gnutls_write (XPROCESS (proc),
- buf, this);
+ if (p->gnutls_p)
+ written = emacs_gnutls_write (p, buf, this);
else
#endif
written = emacs_write (outfd, buf, this);
#ifdef HAVE_GETSOCKNAME
ADD_SUBFEATURE (QCservice, Qt);
#endif
-#if defined(O_NONBLOCK) || defined(O_NDELAY)
+#if defined (O_NONBLOCK) || defined (O_NDELAY)
ADD_SUBFEATURE (QCserver, Qt);
#endif
defsubr (&Sset_network_process_option);
defsubr (&Smake_network_process);
defsubr (&Sformat_network_address);
-#if defined(HAVE_NET_IF_H)
+#if defined (HAVE_NET_IF_H)
#ifdef SIOCGIFCONF
defsubr (&Snetwork_interface_list);
#endif
-#if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
+#if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
defsubr (&Snetwork_interface_info);
#endif
-#endif /* defined(HAVE_NET_IF_H) */
+#endif /* defined (HAVE_NET_IF_H) */
#ifdef DATAGRAM_SOCKETS
defsubr (&Sprocess_datagram_address);
defsubr (&Sset_process_datagram_address);
HCoop / bpt / emacs.git / blobdiff