limit code

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

diff --git a/usr/src/sys/kern/kern_proc.c b/usr/src/sys/kern/kern_proc.c
index 0b8fde9..1b752ac 100644 (file)
--- a/usr/src/sys/kern/kern_proc.c
+++ b/usr/src/sys/kern/kern_proc.c
@@ -1,4 +1,4 @@
-/*     kern_proc.c     3.15    %G%     */
+/*     kern_proc.c     3.16    %G%     */

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


@@ -467,6 +467,7 @@ exit(rv)
                plock(u.u_rdir);
                iput(u.u_rdir);
        }
                plock(u.u_rdir);
                iput(u.u_rdir);
        }

+       u.u_limit[LIM_FSIZE] = INFINITY;

        acct();
        vrelpt(u.u_procp);
        vrelu(u.u_procp, 0);
        acct();
        vrelpt(u.u_procp);
        vrelu(u.u_procp, 0);


@@ -684,6 +685,10 @@ sbreak()
        if (n < 0)
                n = 0;
        d = clrnd(n - u.u_dsize);
        if (n < 0)
                n = 0;
        d = clrnd(n - u.u_dsize);

+       if (u.u_dsize+d > u.u_limit[LIM_DATA]) {
+               u.u_error = ENOMEM;
+               return;
+       }

        if (chksize(u.u_tsize, u.u_dsize+d, u.u_ssize))
                return;
        if (swpexpand(u.u_dsize+d, u.u_ssize, &u.u_dmap, &u.u_smap)==0)
        if (chksize(u.u_tsize, u.u_dsize+d, u.u_ssize))
                return;
        if (swpexpand(u.u_dsize+d, u.u_ssize, &u.u_dmap, &u.u_smap)==0)