You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
/* The GNU Emacs edit server process is run as a subprocess of Emacs
up to the Emacs which then executes them. */
#define NO_SHORTNAMES
+#include <signal.h>
#include <../src/config.h>
#undef read
#undef write
#if !defined (HAVE_SOCKETS) && !defined (HAVE_SYSVIPC)
#include <stdio.h>
+int
main ()
{
fprintf (stderr, "Sorry, the Emacs server is supported only on systems\n");
#else /* HAVE_SOCKETS or HAVE_SYSVIPC */
+void perror_1 ();
+void fatal_error ();
+
#if defined (HAVE_SOCKETS) && ! defined (NO_SOCKETS_IN_FILE_SYSTEM)
/* BSD code is very different from SYSV IPC code */
#include <sys/types.h>
#include <sys/file.h>
#include <sys/socket.h>
-#include <sys/signal.h>
#include <sys/un.h>
#include <stdio.h>
#include <errno.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
extern int errno;
#define FD_ZERO(p) (*(p) = 0)
#endif /* no FD_SET */
-main ()
+/* This is the file name of the socket that we made. */
+
+char *socket_name;
+
+/* Name of this program. */
+
+char *progname;
+\f
+/* Handle fatal signals. */
+
+/* This is the handler. */
+
+SIGTYPE
+delete_socket (sig)
+ int sig;
+{
+ signal (sig, SIG_DFL);
+ unlink (socket_name);
+ kill (getpid (), sig);
+}
+
+/* Set up to handle all the signals. */
+
+void
+handle_signals ()
+{
+ signal (SIGHUP, delete_socket);
+ signal (SIGINT, delete_socket);
+ signal (SIGQUIT, delete_socket);
+ signal (SIGILL, delete_socket);
+ signal (SIGTRAP, delete_socket);
+#ifdef SIGABRT
+ signal (SIGABRT, delete_socket);
+#endif
+#ifdef SIGHWE
+ signal (SIGHWE, delete_socket);
+#endif
+#ifdef SIGPRE
+ signal (SIGPRE, delete_socket);
+#endif
+#ifdef SIGORE
+ signal (SIGORE, delete_socket);
+#endif
+#ifdef SIGUME
+ signal (SIGUME, delete_socket);
+#endif
+#ifdef SIGDLK
+ signal (SIGDLK, delete_socket);
+#endif
+#ifdef SIGCPULIM
+ signal (SIGCPULIM, delete_socket);
+#endif
+#ifdef SIGIOT
+ /* This is missing on some systems - OS/2, for example. */
+ signal (SIGIOT, delete_socket);
+#endif
+#ifdef SIGEMT
+ signal (SIGEMT, delete_socket);
+#endif
+ signal (SIGFPE, delete_socket);
+#ifdef SIGBUS
+ signal (SIGBUS, delete_socket);
+#endif
+ signal (SIGSEGV, delete_socket);
+#ifdef SIGSYS
+ signal (SIGSYS, delete_socket);
+#endif
+ signal (SIGTERM, delete_socket);
+#ifdef SIGXCPU
+ signal (SIGXCPU, delete_socket);
+#endif
+#ifdef SIGXFSZ
+ signal (SIGXFSZ, delete_socket);
+#endif /* SIGXFSZ */
+
+#ifdef AIX
+/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
+ signal (SIGXCPU, delete_socket);
+#ifndef _I386
+ signal (SIGIOINT, delete_socket);
+#endif
+ signal (SIGGRANT, delete_socket);
+ signal (SIGRETRACT, delete_socket);
+ signal (SIGSOUND, delete_socket);
+ signal (SIGMSG, delete_socket);
+#endif /* AIX */
+}
+\f
+/* Print error message. `s1' is printf control string, `s2' is arg for it. */
+void
+error (s1, s2)
+ char *s1, *s2;
+{
+ fprintf (stderr, "%s: ", progname);
+ fprintf (stderr, s1, s2);
+ fprintf (stderr, "\n");
+}
+
+/* Print error message and exit. */
+void
+fatal (s1, s2)
+ char *s1, *s2;
+{
+ error (s1, s2);
+ exit (1);
+}
+
+/* Like malloc but get fatal error if memory is exhausted. */
+
+long *
+xmalloc (size)
+ unsigned int size;
+{
+ long *result = (long *) malloc (size);
+ if (result == NULL)
+ fatal ("virtual memory exhausted", 0);
+ return result;
+}
+\f
+int
+main (argc, argv)
+ int argc;
+ char **argv;
{
char system_name[32];
- int s, infd, fromlen;
+ int s, infd;
+#ifdef SOCKLEN_TYPE
+ SOCKLEN_TYPE fromlen;
+#else
+ size_t fromlen;
+#endif
struct sockaddr_un server, fromunix;
char *homedir;
char *str, string[BUFSIZ], code[BUFSIZ];
FILE *infile;
FILE **openfiles;
int openfiles_size;
+ struct stat statbuf;
#ifndef convex
char *getenv ();
#endif
+ progname = argv[0];
+
openfiles_size = 20;
openfiles = (FILE **) malloc (openfiles_size * sizeof (FILE *));
if (openfiles == 0)
unlink (server.sun_path);
#endif
+ /* Save the socket name so we can delete it. */
+ socket_name = (char *) xmalloc (strlen (server.sun_path) + 1);
+ strcpy (socket_name, server.sun_path);
+
+ handle_signals ();
+
if (bind (s, (struct sockaddr *) &server, strlen (server.sun_path) + 2) < 0)
{
perror_1 ("bind");
exit (1);
}
/* Only this user can send commands to this Emacs. */
- chmod (server.sun_path, 0600);
+ if (stat (server.sun_path, &statbuf) < 0)
+ {
+ perror_1 ("bind");
+ exit (1);
+ }
+
+ chmod (server.sun_path, statbuf.st_mode & 0600);
/*
* Now, just wait for everything to come in..
*/
/* Transfer text from Emacs to the client, up to a newline. */
infile = openfiles[infd];
+ rewind (infile);
while (1)
{
if (fgets (string, BUFSIZ, stdin) == 0)
#else /* This is the SYSV IPC section */
#include <sys/types.h>
-#include <sys/signal.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <setjmp.h>
Its stderr always exists--rms. */
#include <stdio.h>
+int
main ()
{
int s, infd, fromlen, ioproc;
\f
/* This is like perror but puts `Error: ' at the beginning. */
+void
perror_1 (string)
char *string;
{
perror (copy);
}
+void
fatal_error (string)
char *string;
{