-#ifndef lint
-static char *sccsid = "@(#)ps.c 4.29 (Berkeley) %G%";
-#endif
-
/*
- * ps
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved. The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
*/
+
+#ifndef lint
+char copyright[] =
+"@(#) Copyright (c) 1980 Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif not lint
+
+#ifndef lint
+static char sccsid[] = "@(#)ps.c 5.4 (Berkeley) %G%";
+#endif not lint
+
#include <stdio.h>
#include <ctype.h>
-#include <nlist.h>
+#include <a.out.h>
#include <pwd.h>
#include <sys/param.h>
+#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/dir.h>
#include <sys/user.h>
#include <math.h>
#include <errno.h>
-struct nlist nl[] = {
- { "_proc" },
+char *nl_names[] = {
+ "_proc",
#define X_PROC 0
- { "_Usrptmap" },
+ "_Usrptmap",
#define X_USRPTMAP 1
- { "_usrpt" },
+ "_usrpt",
#define X_USRPT 2
- { "_text" },
+ "_text",
#define X_TEXT 3
- { "_nswap" },
+ "_nswap",
#define X_NSWAP 4
- { "_maxslp" },
+ "_maxslp",
#define X_MAXSLP 5
- { "_ccpu" },
+ "_ccpu",
#define X_CCPU 6
- { "_ecmx" },
+ "_ecmx",
#define X_ECMX 7
- { "_nproc" },
+ "_nproc",
#define X_NPROC 8
- { "_ntext" },
+ "_ntext",
#define X_NTEXT 9
- { "_dmmin" },
+ "_dmmin",
#define X_DMMIN 10
- { "_dmmax" },
+ "_dmmax",
#define X_DMMAX 11
- { "_Sysmap" },
+ "_Sysmap",
#define X_SYSMAP 12
- { "_Syssize" },
+ "_Syssize",
#define X_SYSSIZE 13
- { "" },
+ "_inode",
+#define X_INODE 14
+ "_file",
+#define X_FILE 15
+ "_cfree",
+#define X_CFREE 16
+ "_callout",
+#define X_CALLOUT 17
+ "_swapmap",
+#define X_SWAPMAP 18
+ "_argmap",
+#define X_ARGMAP 19
+ "_kernelmap",
+#define X_KERNELMAP 20
+ "_mbmap",
+#define X_MBMAP 21
+ "_nch",
+#define X_NCH 22
+ "_quota",
+#define X_QUOTA 23
+ "_dquot",
+#define X_DQUOT 24
+ "_swbuf",
+#define X_SWBUF 25
+ "_buf",
+#define X_BUF 26
+ "_cmap",
+#define X_CMAP 27
+ "_buffers",
+#define X_BUFFERS 28
+ ""
};
+struct nlist *nl; /* all because we can't init unions */
+int nllen; /* # of nlist entries */
+
struct savcom {
union {
struct lsav *lp;
};
char *lhdr;
+int wcwidth; /* width of the wchan field for sprintf*/
struct lsav {
short l_ppid;
char l_cpu;
#endif
int chkpid;
-int aflg, cflg, eflg, gflg, kflg, lflg, sflg,
+int aflg, cflg, eflg, gflg, kflg, lflg, nflg, sflg,
uflg, vflg, xflg, Uflg;
+int nchans; /* total # of wait channels */
char *tptr;
char *gettty(), *getcmd(), *getname(), *savestr(), *state();
char *rindex(), *calloc(), *sbrk(), *strcpy(), *strcat(), *strncat();
-char *strncpy(), *index(), *ttyname(), mytty[16];
+char *strncpy(), *index(), *ttyname(), mytty[MAXPATHLEN+1];
+char *malloc(), *getchan();
long lseek();
off_t vtophys();
double pcpu(), pmem();
+int wchancomp();
int pscomp();
int nswap, maxslp;
struct text *atext;
struct pte *Sysmap;
int Syssize;
-#ifndef MAXTTYS
-#define MAXTTYS 256
-#endif
-
int nttys;
struct ttys {
dev_t ttyd;
- struct ttys *cand;
+ int cand;
char name[MAXNAMLEN+1];
-} allttys[MAXTTYS], *cand[16];
+} *allttys;
+int cand[16] = {-1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1};
+struct lttys {
+ struct ttys ttys;
+ struct lttys *next;
+} *lallttys;
+
+/*
+ * struct for the symbolic wait channel info
+ *
+ * WNAMESIZ is the max # of chars saved of the symbolic wchan gleaned
+ * from the namelist. Normally, only WSNAMESIZ are printed in the long
+ * format, unless the terminal width is greater than WTSIZ wide.
+ */
+#define WNAMESIZ 12
+#define WSNAMESIZ 6
+#define WTSIZ 95
+
+struct wchan {
+ char wc_name[WNAMESIZ+1]; /* symbolic name */
+ caddr_t wc_caddr; /* addr in kmem */
+} *wchanhd; /* an array sorted by wc_caddr */
+
+#define NWCINDEX 10 /* the size of the index array */
+
+caddr_t wchan_index[NWCINDEX]; /* used to speed searches */
+/*
+ * names listed here are not kept as wait channels -- this is used to
+ * remove names that confuse ps, like symbols that define the end of an
+ * array that happen to be equal to the next symbol.
+ */
+char *wchan_stop_list[] = {
+ "umbabeg",
+ "umbaend",
+ "calimit",
+ NULL
+};
int npr;
int cmdstart;
int twidth;
+struct winsize win;
char *kmemf, *memf, *swapf, *nlistf;
int kmem, mem, swap = -1;
int rawcpu, sumcpu;
int pcbpf;
int argaddr;
-extern char _sobuf[];
#define pgtok(a) ((a)/(1024/NBPG))
register char *ap;
int uid;
off_t procp;
+ int width;
- twidth = 80;
+ if (ioctl(0, TIOCGWINSZ, &win) == -1)
+ twidth = 80;
+ else
+ twidth = (win.ws_col == 0 ? 80 : win.ws_col);
argc--, argv++;
if (argc > 0) {
ap = argv[0];
case 'l':
lflg++;
break;
+ case 'n':
+ nflg++;
+ break;
case 's':
sflg++;
break;
case 't':
if (*ap)
tptr = ap;
- else if ((tptr = ttyname(2)) != 0) {
- strcpy(mytty, tptr);
- if ((tptr = index(mytty,'y')) != 0)
- tptr++;
+ else if ((tptr = ttyname(0)) != 0) {
+ tptr = strcpy(mytty, tptr);
+ if (strncmp(tptr, "/dev/", 5) == 0)
+ tptr += 5;
}
+ if (strncmp(tptr, "tty", 3) == 0)
+ tptr += 3;
aflg++;
gflg++;
if (tptr && *tptr == '?')
vflg++;
break;
case 'w':
- if (twidth == 80)
+ if (twidth < 132)
twidth = 132;
else
twidth = BUFSIZ;
save();
}
}
+ width = twidth - cmdstart - 2;
+ if (width < 0)
+ width = 0;
qsort((char *) savcom, npr, sizeof(savcom[0]), pscomp);
for (i=0; i<npr; i++) {
register struct savcom *sp = &savcom[i];
upr(sp);
else
spr(sp);
- if (sp->ap->a_flag & SWEXIT)
- printf(" <exiting>");
- else if (sp->ap->a_stat == SZOMB)
+ if (sp->ap->a_stat == SZOMB)
printf(" <defunct>");
+ else if (sp->ap->a_flag & SWEXIT)
+ printf(" <exiting>");
else if (sp->ap->a_pid == 0)
printf(" swapper");
else if (sp->ap->a_pid == 2)
printf(" pagedaemon");
- else if (sp->ap->a_pid == 3 && sp->ap->a_flag & SSYS)
- printf(" ip input");
else
printf(" %.*s", twidth - cmdstart - 2, sp->ap->a_cmdp);
printf("\n");
writepsdb(unixname)
char *unixname;
{
- int nllen;
register FILE *fp;
+ struct lttys *lt;
+ setgid(getgid());
setuid(getuid());
if ((fp = fopen(psdb, "w")) == NULL) {
perror(psdb);
exit(1);
} else
fchmod(fileno(fp), 0644);
- nllen = sizeof nl / sizeof (struct nlist);
fwrite((char *) &nllen, sizeof nllen, 1, fp);
fwrite((char *) nl, sizeof (struct nlist), nllen, fp);
+ fwrite((char *) cand, sizeof (cand), 1, fp);
fwrite((char *) &nttys, sizeof nttys, 1, fp);
- fwrite((char *) allttys, sizeof (struct ttys), nttys, fp);
+ for (lt = lallttys ; lt ; lt = lt->next)
+ fwrite((char *)<->ttys, sizeof (struct ttys), 1, fp);
+ fwrite((char *) &nchans, sizeof nchans, 1, fp);
+ fwrite((char *) wchanhd, sizeof (struct wchan), nchans, fp);
+ fwrite((char *) wchan_index, sizeof (caddr_t), NWCINDEX, fp);
fwrite(unixname, strlen(unixname) + 1, 1, fp);
fclose(fp);
}
readpsdb(unixname)
char *unixname;
{
- int nllen;
register i;
register FILE *fp;
char unamebuf[BUFSIZ];
}
fread((char *) &nllen, sizeof nllen, 1, fp);
+ nl = (struct nlist *) malloc (nllen * sizeof (struct nlist));
fread((char *) nl, sizeof (struct nlist), nllen, fp);
+ fread((char *) cand, sizeof (cand), 1, fp);
fread((char *) &nttys, sizeof nttys, 1, fp);
+ allttys = (struct ttys *)malloc(sizeof(struct ttys)*nttys);
+ if (allttys == NULL) {
+ fprintf(stderr, "ps: Can't malloc space for tty table\n");
+ exit(1);
+ }
fread((char *) allttys, sizeof (struct ttys), nttys, fp);
+ fread((char *) &nchans, sizeof nchans, 1, fp);
+ wchanhd = (struct wchan *) malloc(nchans * sizeof (struct wchan));
+ if (wchanhd == NULL) {
+ fprintf(stderr, "ps: Can't malloc space for wait channels\n");
+ nflg++;
+ fseek(fp, (long) nchans * sizeof (struct wchan), 1);
+ } else
+ fread((char *) wchanhd, sizeof (struct wchan), nchans, fp);
+ fread((char *) wchan_index, sizeof (caddr_t), NWCINDEX, fp);
while ((*p = getc(fp)) != '\0')
p++;
return (strcmp(unixname, unamebuf) == 0);
getkvars(argc, argv)
char **argv;
{
+ int faildb = 0; /* true if psdatabase init failed */
nlistf = argc > 1 ? argv[1] : "/vmunix";
if (Uflg) {
+ init_nlist();
nlist(nlistf, nl);
+ getvchans();
getdev();
writepsdb(nlistf);
exit (0);
} else if (!readpsdb(nlistf)) {
+ init_nlist();
if (!kflg)
- nl[X_SYSMAP].n_name = "";
+ nl[X_SYSMAP].n_un.n_name = "";
+ faildb = 1;
nlist(nlistf, nl);
- nttys = 0;
+ nttys = 0;
getdev();
}
(void) lseek(kmem, addr, 0);
read(kmem, (char *) Sysmap, Syssize * sizeof (struct pte));
}
+ if (faildb)
+ getvchans();
usrpt = (struct pte *)nl[X_USRPT].n_value;
Usrptmap = (struct pte *)nl[X_USRPTMAP].n_value;
klseek(kmem, (long)nl[X_NSWAP].n_value, 0);
dmmax = getw(nl[X_DMMAX].n_value);
}
+/*
+ * get the valloc'ed kernel variables for symbolic wait channels
+ */
+getvchans()
+{
+ int i, tmp;
+
+ if (nflg)
+ return;
+
+#define addv(i) addchan(&nl[i].n_un.n_name[1], getw(nl[i].n_value))
+ addv(X_INODE);
+ addv(X_FILE);
+ addv(X_PROC);
+ addv(X_TEXT);
+ addv(X_CFREE);
+ addv(X_CALLOUT);
+ addv(X_SWAPMAP);
+ addv(X_ARGMAP);
+ addv(X_KERNELMAP);
+ addv(X_MBMAP);
+ addv(X_NCH);
+ if (nl[X_QUOTA].n_value != 0) { /* these are #ifdef QUOTA */
+ addv(X_QUOTA);
+ addv(X_DQUOT);
+ }
+ addv(X_SWBUF);
+ addv(X_BUF);
+ addv(X_CMAP);
+ addv(X_BUFFERS);
+ qsort(wchanhd, nchans, sizeof (struct wchan), wchancomp);
+ for (i = 0; i < NWCINDEX; i++) {
+ tmp = i * nchans;
+ wchan_index[i] = wchanhd[tmp / NWCINDEX].wc_caddr;
+ }
+#undef addv
+}
printhdr()
{
char *hdr;
fprintf(stderr, "ps: specify only one of s,l,v and u\n");
exit(1);
}
- hdr = lflg ? lhdr :
- (vflg ? vhdr :
- (uflg ? uhdr : shdr));
+ if (lflg) {
+ if (nflg)
+ wcwidth = 6;
+ else if (twidth > WTSIZ)
+ wcwidth = -WNAMESIZ;
+ else
+ wcwidth = -WSNAMESIZ;
+ if ((hdr = malloc(strlen(lhdr) + WNAMESIZ)) == NULL) {
+ fprintf(stderr, "ps: out of memory\n");
+ exit(1);
+ }
+ sprintf(hdr, lhdr, wcwidth, "WCHAN");
+ } else if (vflg)
+ hdr = vhdr;
+ else if (uflg) {
+ /* add enough on so that it can hold the sprintf below */
+ if ((hdr = malloc(strlen(uhdr) + 10)) == NULL) {
+ fprintf(stderr, "ps: out of memory\n");
+ exit(1);
+ }
+ sprintf(hdr, uhdr, nflg ? " UID" : "USER ");
+ } else
+ hdr = shdr;
if (lflg+vflg+uflg+sflg == 0)
hdr += strlen("SSIZ ");
cmdstart = strlen(hdr);
getdev()
{
register DIR *df;
+ struct ttys *t;
+ struct lttys *lt;
if (chdir("/dev") < 0) {
perror("/dev");
while ((dbuf = readdir(df)) != NULL)
maybetty();
closedir(df);
+ allttys = (struct ttys *)malloc(sizeof(struct ttys)*nttys);
+ if (allttys == NULL) {
+ fprintf(stderr, "ps: Can't malloc space for tty table\n");
+ exit(1);
+ }
+ for (lt = lallttys, t = allttys; lt ; lt = lt->next, t++)
+ *t = lt->ttys;
}
/*
maybetty()
{
register char *cp = dbuf->d_name;
- register struct ttys *dp;
+ static struct lttys *dp;
+ struct lttys *olddp;
int x;
struct stat stb;
case 'r':
cp++;
#define is(a,b) cp[0] == 'a' && cp[1] == 'b'
- if (is(h,p) || is(r,a) || is(u,p) || is(r,k)
- || is(r,m) || is(m,t)) {
+ if (is(h,p) || is(r,a) || is(u,p) || is(h,k)
+ || is(r,b) || is(m,t)) {
cp += 2;
if (isdigit(*cp) && cp[2] == 0)
return;
case 'n':
if (!strcmp(cp, "null"))
return;
+ if (!strncmp(cp, "nrmt", 4))
+ return;
+ break;
+
+ case 'p':
+ if (cp[1] && cp[1] == 't' && cp[2] == 'y')
+ return;
break;
case 'v':
else
x = -1;
donecand:
- if (nttys >= MAXTTYS) {
- fprintf(stderr, "ps: tty table overflow\n");
+ olddp = dp;
+ dp = (struct lttys *)malloc(sizeof(struct lttys));
+ if (dp == NULL) {
+ fprintf(stderr, "ps: Can't malloc space for tty table\n");
exit(1);
}
- dp = &allttys[nttys++];
- (void) strcpy(dp->name, dbuf->d_name);
+ if (lallttys == NULL)
+ lallttys = dp;
+ nttys++;
+ if (olddp)
+ olddp->next = dp;
+ dp->next = NULL;
+ (void) strcpy(dp->ttys.name, dbuf->d_name);
if (Uflg) {
- if (stat(dp->name, &stb) == 0 &&
+ if (stat(dp->ttys.name, &stb) == 0 &&
(stb.st_mode&S_IFMT)==S_IFCHR)
- dp->ttyd = x = stb.st_rdev;
+ dp->ttys.ttyd = x = stb.st_rdev;
else {
nttys--;
+ if (lallttys == dp)
+ lallttys = NULL;
+ free(dp);
+ dp = olddp;
+ if (dp)
+ dp->next = NULL;
return;
}
} else
- dp->ttyd = -1;
+ dp->ttys.ttyd = -1;
if (x == -1)
return;
x &= 017;
- dp->cand = cand[x];
- cand[x] = dp;
+ dp->ttys.cand = cand[x];
+ cand[x] = nttys-1;
}
char *
if (u.u_ttyp == 0)
return("?");
x = u.u_ttyd & 017;
- for (dp = cand[x]; dp; dp = dp->cand) {
+ for (dp = &allttys[cand[x]]; dp != &allttys[-1];
+ dp = &allttys[dp->cand]) {
if (dp->ttyd == -1) {
if (stat(dp->name, &stb) == 0 &&
(stb.st_mode&S_IFMT)==S_IFCHR)
}
char *lhdr =
-" F UID PID PPID CP PRI NI ADDR SZ RSS WCHAN STAT TT TIME";
+" F UID PID PPID CP PRI NI ADDR SZ RSS %*s STAT TT TIME";
lpr(sp)
struct savcom *sp;
{
ap->a_flag, ap->a_uid,
ap->a_pid, lp->l_ppid, lp->l_cpu&0377, ap->a_pri-PZERO,
ap->a_nice-NZERO, lp->l_addr, pgtok(ap->a_size), pgtok(ap->a_rss));
- printf(lp->l_wchan ? " %6x" : " ", (int)lp->l_wchan&0xffffff);
+ if (lp->l_wchan == 0)
+ printf(" %*s", wcwidth, "");
+ else if (nflg)
+ printf(" %*x", wcwidth, (int)lp->l_wchan&0xffffff);
+ else
+ printf(" %*.*s", wcwidth, abs(wcwidth), getchan(lp->l_wchan));
printf(" %4.4s ", state(ap));
ptty(ap->a_tty);
ptime(ap);
}
char *uhdr =
-"USER PID %CPU %MEM SZ RSS TT STAT TIME";
+"%s PID %%CPU %%MEM SZ RSS TT STAT TIME";
upr(sp)
struct savcom *sp;
{
rmsize = pgtok(ap->a_rss);
if (ap->a_xccount)
rmsize += pgtok(ap->a_txtrss/ap->a_xccount);
- printf("%-8.8s %5d%5.1f%5.1f%5d%5d",
- getname(ap->a_uid), ap->a_pid, sp->s_un.u_pctcpu, pmem(ap),
- vmsize, rmsize);
+ if (nflg)
+ printf("%4d ", ap->a_uid);
+ else
+ printf("%-8.8s ", getname(ap->a_uid));
+ printf("%5d%5.1f%5.1f%5d%5d",
+ ap->a_pid, sp->s_un.u_pctcpu, pmem(ap), vmsize, rmsize);
putchar(' ');
ptty(ap->a_tty);
printf(" %4.4s", state(ap));
return (vp->v_swrss + (ap->a_xccount ? 0 : vp->v_txtswrss));
}
-#define NMAX 8 /* sizeof loginname (should be sizeof (utmp.ut_name)) */
-#define NUID 2048 /* must not be a multiple of 5 */
+#include <utmp.h>
-struct nametable {
- char nt_name[NMAX+1];
- int nt_uid;
-} nametable[NUID];
+struct utmp utmp;
+#define NMAX (sizeof (utmp.ut_name))
+#define SCPYN(a, b) strncpy(a, b, NMAX)
-struct nametable *
-findslot(uid)
-int uid;
-{
- register struct nametable *n, *start;
-
- /*
- * find the uid or an empty slot.
- * return NULL if neither found.
- */
-
- n = start = nametable + (uid % (NUID - 20));
- while (n->nt_name[0] && n->nt_uid != uid) {
- if ((n += 5) >= &nametable[NUID])
- n -= NUID;
- if (n == start)
- return((struct nametable *)NULL);
- }
- return(n);
-}
+#define NUID 64
+struct ncache {
+ int uid;
+ char name[NMAX+1];
+} nc[NUID];
+
+/*
+ * This function assumes that the password file is hashed
+ * (or some such) to allow fast access based on a uid key.
+ */
char *
getname(uid)
{
- register struct passwd *pw;
- static init = 0;
- struct passwd *getpwent();
- register struct nametable *n;
-
- /*
- * find uid in hashed table; add it if not found.
- * return pointer to name.
- */
-
- if ((n = findslot(uid)) == NULL)
- return((char *)NULL);
-
- if (n->nt_name[0]) /* occupied? */
- return(n->nt_name);
-
- switch (init) {
- case 0:
- setpwent();
- init = 1;
- /* intentional fall-thru */
- case 1:
- while (pw = getpwent()) {
- if (pw->pw_uid < 0)
- continue;
- if ((n = findslot(pw->pw_uid)) == NULL) {
- endpwent();
- init = 2;
- return((char *)NULL);
- }
- if (n->nt_name[0])
- continue; /* duplicate, not uid */
- strncpy(n->nt_name, pw->pw_name, NMAX);
- n->nt_uid = pw->pw_uid;
- if (pw->pw_uid == uid)
- return (n->nt_name);
- }
- endpwent();
- init = 2;
- /* intentional fall-thru */
- case 2:
- return ((char *)NULL);
- }
- /* NOTREACHED */
+ register struct passwd *pw;
+ struct passwd *getpwent();
+ register int cp;
+ extern int _pw_stayopen;
+
+ _pw_stayopen = 1;
+
+#if (((NUID) & ((NUID) - 1)) != 0)
+ cp = uid % (NUID);
+#else
+ cp = uid & ((NUID) - 1);
+#endif
+ if (uid >= 0 && nc[cp].uid == uid && nc[cp].name[0])
+ return (nc[cp].name);
+ pw = getpwuid(uid);
+ if (!pw)
+ return (0);
+ nc[cp].uid = uid;
+ SCPYN(nc[cp].name, pw->pw_name);
+ return (nc[cp].name);
}
char *
loc = (long) (ptob(Sysmap[p].pg_pfnum) + (loc & PGOFSET));
return(loc);
}
+
+/*
+ * since we can't init unions, the cleanest way to use a.out.h instead
+ * of nlist.h (required since nlist() uses some defines) is to do a
+ * runtime copy into the nl array -- sigh
+ */
+init_nlist()
+{
+ register struct nlist *np;
+ register char **namep;
+
+ nllen = sizeof nl_names / sizeof (char *);
+ np = nl = (struct nlist *) malloc(nllen * sizeof (struct nlist));
+ if (np == NULL) {
+ fprintf(stderr, "ps: out of memory allocating namelist\n");
+ exit(1);
+ }
+ namep = &nl_names[0];
+ while (nllen > 0) {
+ np->n_un.n_name = *namep;
+ if (**namep == '\0')
+ break;
+ namep++;
+ np++;
+ }
+}
+
+/*
+ * nlist - retreive attributes from name list (string table version)
+ * modified to add wait channels - Charles R. LaBrec 8/85
+ */
+nlist(name, list)
+ char *name;
+ struct nlist *list;
+{
+ register struct nlist *p, *q;
+ register char *s1, *s2;
+ register n, m;
+ int maxlen, nreq;
+ FILE *f;
+ FILE *sf;
+ off_t sa; /* symbol address */
+ off_t ss; /* start of strings */
+ int type;
+ struct exec buf;
+ struct nlist space[BUFSIZ/sizeof (struct nlist)];
+ char nambuf[BUFSIZ];
+
+ maxlen = 0;
+ for (q = list, nreq = 0; q->n_un.n_name && q->n_un.n_name[0]; q++, nreq++) {
+ q->n_type = 0;
+ q->n_value = 0;
+ q->n_desc = 0;
+ q->n_other = 0;
+ n = strlen(q->n_un.n_name);
+ if (n > maxlen)
+ maxlen = n;
+ }
+ f = fopen(name, "r");
+ if (f == NULL)
+ return (-1);
+ fread((char *)&buf, sizeof buf, 1, f);
+ if (N_BADMAG(buf)) {
+ fclose(f);
+ return (-1);
+ }
+ sf = fopen(name, "r");
+ if (sf == NULL) {
+ /* ??? */
+ fclose(f);
+ return(-1);
+ }
+ sa = N_SYMOFF(buf);
+ ss = sa + buf.a_syms;
+ n = buf.a_syms;
+ fseek(f, sa, 0);
+ while (n) {
+ m = sizeof (space);
+ if (n < m)
+ m = n;
+ if (fread((char *)space, m, 1, f) != 1)
+ break;
+ n -= m;
+ for (q = space; (m -= sizeof(struct nlist)) >= 0; q++) {
+ if (q->n_un.n_strx == 0 || q->n_type & N_STAB)
+ continue;
+ /*
+ * since we know what type of symbols we will get,
+ * we can make a quick check here -- crl
+ */
+ type = q->n_type & (N_TYPE | N_EXT);
+ if ((q->n_type & N_TYPE) != N_ABS
+ && type != (N_EXT | N_DATA)
+ && type != (N_EXT | N_BSS))
+ continue;
+ fseek(sf, ss+q->n_un.n_strx, 0);
+ fread(nambuf, maxlen+1, 1, sf);
+ /* if using wchans, add it to the list of channels */
+ if (!nflg)
+ addchan(&nambuf[1], (caddr_t) q->n_value);
+ for (p = list; p->n_un.n_name && p->n_un.n_name[0]; p++) {
+ s1 = p->n_un.n_name;
+ s2 = nambuf;
+ if (strcmp(p->n_un.n_name, nambuf) == 0) {
+ p->n_value = q->n_value;
+ p->n_type = q->n_type;
+ p->n_desc = q->n_desc;
+ p->n_other = q->n_other;
+ --nreq;
+ break;
+ }
+ }
+ }
+ }
+alldone:
+ fclose(f);
+ fclose(sf);
+ return (nreq);
+}
+
+/*
+ * add the given channel to the channel list
+ */
+addchan(name, caddr)
+char *name;
+caddr_t caddr;
+{
+ static int left = 0;
+ register struct wchan *wp;
+ register char **p;
+
+ for (p = wchan_stop_list; *p; p++) {
+ if (**p != *name) /* quick check first */
+ continue;
+ if (strncmp(name, *p, WNAMESIZ) == 0)
+ return; /* if found, don't add */
+ }
+ if (left == 0) {
+ if (wchanhd) {
+ left = 100;
+ wchanhd = (struct wchan *) realloc(wchanhd,
+ (nchans + left) * sizeof (struct wchan));
+ } else {
+ left = 600;
+ wchanhd = (struct wchan *) malloc(left
+ * sizeof (struct wchan));
+ }
+ if (wchanhd == NULL) {
+ fprintf(stderr, "ps: out of memory allocating wait channels\n");
+ nflg++;
+ return;
+ }
+ }
+ left--;
+ wp = &wchanhd[nchans++];
+ strncpy(wp->wc_name, name, WNAMESIZ);
+ wp->wc_name[WNAMESIZ] = '\0';
+ wp->wc_caddr = caddr;
+}
+
+/*
+ * returns the symbolic wait channel corresponding to chan
+ */
+char *
+getchan(chan)
+register caddr_t chan;
+{
+ register i, iend;
+ register char *prevsym;
+ register struct wchan *wp;
+
+ prevsym = "???"; /* nothing, to begin with */
+ if (chan) {
+ for (i = 0; i < NWCINDEX; i++)
+ if ((unsigned) chan < (unsigned) wchan_index[i])
+ break;
+ iend = i--;
+ if (i < 0) /* can't be found */
+ return prevsym;
+ iend *= nchans;
+ iend /= NWCINDEX;
+ i *= nchans;
+ i /= NWCINDEX;
+ wp = &wchanhd[i];
+ for ( ; i < iend; i++, wp++) {
+ if ((unsigned) wp->wc_caddr > (unsigned) chan)
+ break;
+ prevsym = wp->wc_name;
+ }
+ }
+ return prevsym;
+}
+
+/*
+ * used in sorting the wait channel array
+ */
+int
+wchancomp (w1, w2)
+struct wchan *w1, *w2;
+{
+ register unsigned c1, c2;
+
+ c1 = (unsigned) w1->wc_caddr;
+ c2 = (unsigned) w2->wc_caddr;
+ if (c1 > c2)
+ return 1;
+ else if (c1 == c2)
+ return 0;
+ else
+ return -1;
+}