X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=vsyssh%2Fvsyssh.c;fp=vsyssh%2Fvsyssh.c;h=b0377caa9112f04065cbd20d83f21af227279d57;hb=d2f02b8408801a06b63b1b922f6af4c6b14fb5ef;hp=0000000000000000000000000000000000000000;hpb=8ed94d4c37a320acc03f1f3f6523201b42202f00;p=vsys.git

diff --git a/vsyssh/vsyssh.c b/vsyssh/vsyssh.c
new file mode 100644
index 0000000..b0377ca
--- /dev/null
+++ b/vsyssh/vsyssh.c
@@ -0,0 +1,59 @@
+/* gcc -Wall -O2 -g chpid.c -o chpid */
+#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE_EXTENDED
+#define _SVID_SOURCE
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/mount.h>
+#include <sys/vfs.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sched.h>
+#include <stdarg.h>
+#include <dirent.h>
+
+int main(int argc, char **argv, char **envp)
+{
+	if (argc<3) {
+		printf("Usage: vsyssh <vsys entry> <cmd>\n");
+		exit(1);
+	}
+	else {
+		int vfd0,vfd1;
+		char *inf,*outf;
+		inf=(char *)malloc(strlen(argv[1])+3);
+		outf=(char *)malloc(strlen(argv[2])+4);
+		strcpy(inf,argv[1]);
+		strcpy(inf,argv[2]);
+		strcat(inf,".in");
+		strcat(outf,".out");
+
+		vfd1 = open(inf,O_WRONLY);
+		vfd0 = open(outf,O_RDONLY);
+
+		if (vfd0==-1 || vfd1 == -1) {
+			printf("Error opening vsys entry %s\n", argv[1]);
+			exit(1);
+		}
+
+		close(0);
+		close(1);
+
+		dup2(vfd0,0);
+		dup2(vfd1,1);
+
+		execve(argv[3],argv+3,envp);
+       }
+
+       return;
+
+}