alloc tables at boot time version

[unix-history] / usr / src / sys / kern / vfs_lookup.c

diff --git a/usr/src/sys/kern/vfs_lookup.c b/usr/src/sys/kern/vfs_lookup.c
index 771f496..8091f99 100644 (file)
--- a/usr/src/sys/kern/vfs_lookup.c
+++ b/usr/src/sys/kern/vfs_lookup.c
@@ -1,4 +1,4 @@
-/*     vfs_lookup.c    3.1     %H%     */
+/*     vfs_lookup.c    4.3     %G%     */

 
 #include "../h/param.h"
 #include "../h/systm.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"


@@ -7,6 +7,7 @@
 #include "../h/dir.h"
 #include "../h/user.h"
 #include "../h/buf.h"
 #include "../h/dir.h"
 #include "../h/user.h"
 #include "../h/buf.h"

+#include "../h/conf.h"

 
 /*
  * Convert a pathname into a pointer to
 
 /*
  * Convert a pathname into a pointer to


@@ -27,6 +28,7 @@ int (*func)();
        register c;
        register char *cp;
        struct buf *bp;
        register c;
        register char *cp;
        struct buf *bp;

+       register struct direct *ep;

        int i;
        dev_t d;
        off_t eo;
        int i;
        dev_t d;
        off_t eo;


@@ -40,7 +42,7 @@ int (*func)();
        if((c=(*func)()) == '/')
                if ((dp = u.u_rdir) == NULL)
                        dp = rootdir;
        if((c=(*func)()) == '/')
                if ((dp = u.u_rdir) == NULL)
                        dp = rootdir;

-       VOID iget(dp->i_dev, dp->i_number);
+       (void) iget(dp->i_dev, dp->i_number);

        while(c == '/')
                c = (*func)();
        if(c == '\0' && flag != 0)
        while(c == '/')
                c = (*func)();
        if(c == '\0' && flag != 0)


@@ -57,6 +59,13 @@ cloop:
        if(c == '\0')
                return(dp);
 
        if(c == '\0')
                return(dp);
 

+#ifdef CHAOS
+       if((dp->i_mode&IFMT) == IFCHR && cdevpath & (1 << major(dp->i_un.i_rdev)) ) {
+               u.u_dirp--;
+               return(dp);
+       }
+#endif
+

        /*
         * If there is another component,
         * Gather up name into
        /*
         * If there is another component,
         * Gather up name into


@@ -67,7 +76,11 @@ cloop:
        while (c != '/' && c != '\0' && u.u_error == 0 ) {
                if (mpxip!=NULL && c=='!')
                        break;
        while (c != '/' && c != '\0' && u.u_error == 0 ) {
                if (mpxip!=NULL && c=='!')
                        break;

-               if(cp < &u.u_dbuf[DIRSIZ])
+               if (flag==1 && c == ('/'|0200)) {
+                       u.u_error = ENOENT;
+                       goto out;
+               }
+               if (cp < &u.u_dbuf[DIRSIZ])

                        *cp++ = c;
                c = (*func)();
        }
                        *cp++ = c;
                c = (*func)();
        }


@@ -90,7 +103,7 @@ seloop:
 
        if((dp->i_mode&IFMT) != IFDIR)
                u.u_error = ENOTDIR;
 
        if((dp->i_mode&IFMT) != IFDIR)
                u.u_error = ENOTDIR;

-       VOID access(dp, IEXEC);
+       (void) access(dp, IEXEC);

        if(u.u_error)
                goto out;
 
        if(u.u_error)
                goto out;
 


@@ -113,7 +126,7 @@ eloop:
        if(u.u_offset >= dp->i_size) {
                if(bp != NULL)
                        brelse(bp);
        if(u.u_offset >= dp->i_size) {
                if(bp != NULL)
                        brelse(bp);

-               if(flag==1 && c=='\0') {
+               if(flag==1 && c=='\0' && dp->i_nlink) {

                        if(access(dp, IWRITE))
                                goto out;
                        u.u_pdir = dp;
                        if(access(dp, IWRITE))
                                goto out;
                        u.u_pdir = dp;


@@ -142,7 +155,9 @@ eloop:
                        brelse(bp);
                        goto out;
                }
                        brelse(bp);
                        goto out;
                }

-       }
+               ep = (struct direct *)bp->b_un.b_addr;
+       } else
+               ep++;

 
        /*
         * Note first empty directory slot
 
        /*
         * Note first empty directory slot


@@ -152,16 +167,14 @@ eloop:
         * If they do not match, go back to eloop.
         */
 
         * If they do not match, go back to eloop.
         */
 

-       bcopy(bp->b_un.b_addr+(u.u_offset&BMASK), (caddr_t)&u.u_dent,
-               sizeof(struct direct));

        u.u_offset += sizeof(struct direct);
        u.u_offset += sizeof(struct direct);

-       if(u.u_dent.d_ino == 0) {
+       if(ep->d_ino == 0) {

                if(eo == 0)
                        eo = u.u_offset;
                goto eloop;
        }
        for(i=0; i<DIRSIZ; i++) {
                if(eo == 0)
                        eo = u.u_offset;
                goto eloop;
        }
        for(i=0; i<DIRSIZ; i++) {

-               if(u.u_dbuf[i] != u.u_dent.d_name[i])
+               if(u.u_dbuf[i] != ep->d_name[i])

                        goto eloop;
                if(u.u_dbuf[i] == 0)
                        break;
                        goto eloop;
                if(u.u_dbuf[i] == 0)
                        break;


@@ -172,7 +185,7 @@ eloop:
         * If there is more pathname, go back to
         * cloop, otherwise return.
         */
         * If there is more pathname, go back to
         * cloop, otherwise return.
         */

-
+       bcopy((caddr_t)ep, (caddr_t)&u.u_dent, sizeof(struct direct));

        if(bp != NULL)
                brelse(bp);
        if(flag==2 && c=='\0') {
        if(bp != NULL)
                brelse(bp);
        if(flag==2 && c=='\0') {