add Nflag to request not to do any writes

[unix-history] / usr / src / sbin / restore / tape.c

diff --git a/usr/src/sbin/restore/tape.c b/usr/src/sbin/restore/tape.c
index 3079002..efa31ba 100644 (file)
--- a/usr/src/sbin/restore/tape.c
+++ b/usr/src/sbin/restore/tape.c
@@ -5,7 +5,7 @@
  */
 
 #ifndef lint
  */
 
 #ifndef lint

-static char sccsid[] = "@(#)tape.c     5.13 (Berkeley) %G%";
+static char sccsid[] = "@(#)tape.c     5.14 (Berkeley) %G%";

 #endif not lint
 
 #include "restore.h"
 #endif not lint
 
 #include "restore.h"


@@ -418,6 +418,10 @@ extractfile(name)
        case IFCHR:
        case IFBLK:
                vprintf(stdout, "extract special file %s\n", name);
        case IFCHR:
        case IFBLK:
                vprintf(stdout, "extract special file %s\n", name);

+               if (Nflag) {
+                       skipfile();
+                       return (GOOD);
+               }

                if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
                        fprintf(stderr, "%s: ", name);
                        (void) fflush(stderr);
                if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
                        fprintf(stderr, "%s: ", name);
                        (void) fflush(stderr);


@@ -433,6 +437,10 @@ extractfile(name)
 
        case IFREG:
                vprintf(stdout, "extract file %s\n", name);
 
        case IFREG:
                vprintf(stdout, "extract file %s\n", name);

+               if (Nflag) {
+                       skipfile();
+                       return (GOOD);
+               }

                if ((ofile = creat(name, 0666)) < 0) {
                        fprintf(stderr, "%s: ", name);
                        (void) fflush(stderr);
                if ((ofile = creat(name, 0666)) < 0) {
                        fprintf(stderr, "%s: ", name);
                        (void) fflush(stderr);


@@ -541,6 +549,8 @@ xtrfile(buf, size)
        long    size;
 {
 
        long    size;
 {
 

+       if (Nflag)
+               return;

        if (write(ofile, buf, (int) size) == -1) {
                fprintf(stderr, "write error extracting inode %d, name %s\n",
                        curfile.ino, curfile.name);
        if (write(ofile, buf, (int) size) == -1) {
                fprintf(stderr, "write error extracting inode %d, name %s\n",
                        curfile.ino, curfile.name);