tags 211301 + patch
thanks
The attached patch implements the -n option (+entry in manual page).
--
-- arthur de jong - [EMAIL PROTECTED] - west consulting b.v. --
Index: rsh.1
===================================================================
--- rsh.1 (revision 71)
+++ rsh.1 (working copy)
@@ -30,6 +30,8 @@
Use only IPv6 to connect to the remote host.
.It Fl v
Be verbose.
+.It Fl n
+Redirect stdin to /dev/null to be able to run rsh in the background.
.It Fl l Ar user
Connect to the remote host as a different user than on the local machine.
.It Fl p Ar port
Index: rsh.c
===================================================================
--- rsh.c (revision 71)
+++ rsh.c (working copy)
@@ -19,6 +19,7 @@
#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
+#include <stdlib.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/socket.h>
@@ -33,7 +34,7 @@
char *argv0;
void usage(void) {
- fprintf(stderr, "Usage: %s [-46v] [-l user] [-p port] [EMAIL PROTECTED] command...\n", argv0);
+ fprintf(stderr, "Usage: %s [-46vn] [-l user] [-p port] [EMAIL PROTECTED] command...\n", argv0);
}
/* Make sure everything gets written */
@@ -71,6 +72,24 @@
}
}
+void closestdin(void) {
+ int fd;
+ /* close stdin */
+ close(0);
+ /* open /dev/null */
+ if ((fd = open("/dev/null", O_RDONLY)) < 0)
+ {
+ fprintf(stderr, "%s: Error opening /dev/null: %s\n", argv0, strerror(errno));
+ exit(1);
+
+ }
+ /* copy file descriptor to stdin if we didn't open stdin already */
+ if (fd!=0) {
+ dup2(fd, 0);
+ close(fd);
+ }
+}
+
int main(int argc, char **argv) {
char *user = NULL;
char *luser = NULL;
@@ -113,7 +132,7 @@
/* Process options */
- while((opt = getopt(argc, argv, "+l:p:46v")) != -1) {
+ while((opt = getopt(argc, argv, "+l:p:46vn")) != -1) {
switch(opt) {
case 'l':
user = optarg;
@@ -130,6 +149,9 @@
case 'v':
verbose = true;
break;
+ case 'n':
+ closestdin();
+ break;
default:
fprintf(stderr, "%s: Unknown option!\n", argv0);
usage();
