386BSD 0.1 development

Work on file usr/src/bin/ps/nlist.c

Co-Authored-By: Lynne Greer Jolitz <ljolitz@cardio.ucsf.edu>
Synthesized-from: 386BSD-0.1

diff --git a/usr/src/bin/ps/nlist.c b/usr/src/bin/ps/nlist.c
new file mode 100644 (file)
index 0000000..03f4269
--- /dev/null
+++ b/usr/src/bin/ps/nlist.c
@@ -0,0 +1,127 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)nlist.c    5.5 (Berkeley) 7/1/91";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/proc.h>
+#include <nlist.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef SPPWAIT
+#define NEWVM
+#endif
+
+struct nlist psnl[] = {
+       {"_fscale"},
+#define        X_FSCALE        0
+       {"_ccpu"},
+#define        X_CCPU          1
+#ifdef NEWVM
+       {"_avail_start"},
+#define        X_AVAILSTART    2
+       {"_avail_end"},
+#define        X_AVAILEND      3
+#else
+       {"_ecmx"},
+#define        X_ECMX          2
+#endif
+       {NULL}
+};
+
+fixpt_t        ccpu;                           /* kernel _ccpu variable */
+int    nlistread;                      /* if nlist already read. */
+int    mempages;                       /* number of pages of phys. memory */
+int    fscale;                         /* kernel _fscale variable */
+
+#define kread(x, v) \
+       kvm_read(psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v)
+
+donlist()
+{
+       extern int eval;
+       int rval;
+#ifdef NEWVM
+       int tmp;
+#endif
+
+       rval = 0;
+       nlistread = 1;
+       if (kvm_nlist(psnl)) {
+               nlisterr(psnl);
+               eval = 1;
+               return(1);
+       }
+       if (kread(X_FSCALE, fscale)) {
+               (void)fprintf(stderr, "ps: fscale: %s\n", kvm_geterr());
+               eval = rval = 1;
+       }
+#ifdef NEWVM
+       if (kread(X_AVAILEND, mempages)) {
+               (void)fprintf(stderr, "ps: avail_start: %s\n", kvm_geterr());
+               eval = rval = 1;
+       }
+       if (kread(X_AVAILSTART, tmp)) {
+               (void)fprintf(stderr, "ps: avail_end: %s\n", kvm_geterr());
+               eval = rval = 1;
+       }
+       mempages -= tmp;
+#else
+       if (kread(X_ECMX, mempages)) {
+               (void)fprintf(stderr, "ps: ecmx: %s\n", kvm_geterr());
+               eval = rval = 1;
+       }
+#endif
+       if (kread(X_CCPU, ccpu)) {
+               (void)fprintf(stderr, "ps: ccpu: %s\n", kvm_geterr());
+               eval = rval = 1;
+       }
+       return(rval);
+}
+
+nlisterr(nl)
+       struct nlist nl[];
+{
+       int i;
+
+       fprintf(stderr, "ps: nlist: can't find following symbols:");
+       for (i = 0; nl[i].n_name != NULL; i++)
+               if (nl[i].n_value == 0)
+                       fprintf(stderr, " %s", nl[i].n_name);
+       fprintf(stderr, "\n");
+}