Cleaned up the repository, getting rid of binary files.

[vsys.git] / vsyssh / vsyssh.c

diff --git a/vsyssh/vsyssh.c b/vsyssh/vsyssh.c
new file mode 100644 (file)
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;
+
+}