add 1994 copyright

[unix-history] / usr / src / bin / ls / ls.c

diff --git a/usr/src/bin/ls/ls.c b/usr/src/bin/ls/ls.c
index 57abd29..9628f7c 100644 (file)
--- a/usr/src/bin/ls/ls.c
+++ b/usr/src/bin/ls/ls.c
@@ -1,6 +1,6 @@
 /*
 /*

- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1993, 1994
+ *     The Regents of the University of California.  All rights reserved.

  *
  * This code is derived from software contributed to Berkeley by
  * Michael Fischbein.
  *
  * This code is derived from software contributed to Berkeley by
  * Michael Fischbein.


@@ -9,46 +9,49 @@
  */
 
 #ifndef lint
  */
 
 #ifndef lint

-char copyright[] =
-"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n";
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+       The Regents of the University of California.  All rights reserved.\n";

 #endif /* not lint */
 
 #ifndef lint
 #endif /* not lint */
 
 #ifndef lint

-static char sccsid[] = "@(#)ls.c       5.49 (Berkeley) %G%";
+static char sccsid[] = "@(#)ls.c       8.5 (Berkeley) %G%";

 #endif /* not lint */
 
 #endif /* not lint */
 

-#include <sys/param.h>
+#include <sys/types.h>

 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>

+

 #include <dirent.h>
 #include <dirent.h>

-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
+#include <err.h>

 #include <errno.h>
 #include <errno.h>

+#include <fts.h>

 #include <stdio.h>
 #include <stdio.h>

+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+

 #include "ls.h"
 #include "extern.h"
 
 #include "ls.h"
 #include "extern.h"
 

-static void    displaydir __P((LS *, int));
-static void    doargs __P((int, char **));
-static void    subdir __P((LS *));
-static int     tabdir __P((LS *, LS **, char **));
+static void     display __P((FTSENT *, FTSENT *));
+static int      mastercmp __P((const FTSENT **, const FTSENT **));
+static void     traverse __P((int, char **, int));
+
+static void (*printfcn) __P((DISPLAY *));
+static int (*sortfcn) __P((const FTSENT *, const FTSENT *));

 
 

+long blocksize;                        /* block size units */

 int termwidth = 80;            /* default terminal width */
 
 /* flags */
 int f_accesstime;              /* use time of last access */
 int f_column;                  /* columnated format */
 int termwidth = 80;            /* default terminal width */
 
 /* flags */
 int f_accesstime;              /* use time of last access */
 int f_column;                  /* columnated format */

-int f_group;                   /* show group ownership of a file */
-int f_ignorelink;              /* indirect through symbolic link operands */
+int f_flags;                   /* show flags associated with a file */

 int f_inode;                   /* print inode */
 int f_inode;                   /* print inode */

-int f_kblocks;                 /* print size in kilobytes */
-int f_listalldot;              /* list . and .. as well */

 int f_listdir;                 /* list actual directory, not contents */
 int f_listdot;                 /* list files beginning with . */
 int f_longform;                        /* long listing format */
 int f_listdir;                 /* list actual directory, not contents */
 int f_listdot;                 /* list files beginning with . */
 int f_longform;                        /* long listing format */

-int f_needstat;                        /* if need to stat files */

 int f_newline;                 /* if precede with newline */
 int f_nonprint;                        /* show unprintables as ? */
 int f_nosort;                  /* don't sort output */
 int f_newline;                 /* if precede with newline */
 int f_nonprint;                        /* show unprintables as ? */
 int f_nosort;                  /* don't sort output */


@@ -60,42 +63,41 @@ int f_size;                 /* list size in short listing */
 int f_statustime;              /* use time of last mode change */
 int f_dirname;                 /* if precede with directory name */
 int f_timesort;                        /* sort by time vice name */
 int f_statustime;              /* use time of last mode change */
 int f_dirname;                 /* if precede with directory name */
 int f_timesort;                        /* sort by time vice name */

-int f_total;                   /* if precede with "total" line */

 int f_type;                    /* add type character for non-regular files */
 
 int f_type;                    /* add type character for non-regular files */
 

-void (*printfcn)();
-int (*statfcn)(), (*sortfcn)();
-
+int

 main(argc, argv)
        int argc;
 main(argc, argv)
        int argc;

-       char **argv;
+       char *argv[];

 {
 {

+       static char dot[] = ".", *dotav[] = { dot, NULL };

        struct winsize win;
        struct winsize win;

-       int ch;
+       int ch, fts_options, notused;

        char *p;
 
        char *p;
 

-       /* terminal defaults to -Cq, non-terminal defaults to -1 */
-       if (isatty(1)) {
-               f_nonprint = 1;
-               if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) {
-                       if (p = getenv("COLUMNS"))
+       /* Terminal defaults to -Cq, non-terminal defaults to -1. */
+       if (isatty(STDOUT_FILENO)) {
+               if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == -1 ||
+                   !win.ws_col) {
+                       if ((p = getenv("COLUMNS")) != NULL)

                                termwidth = atoi(p);
                }
                else
                        termwidth = win.ws_col;
                                termwidth = atoi(p);
                }
                else
                        termwidth = win.ws_col;

-               f_column = 1;
+               f_column = f_nonprint = 1;

        } else
                f_singlecol = 1;
 
        } else
                f_singlecol = 1;
 

-       /* root is -A automatically */
+       /* Root is -A automatically. */

        if (!getuid())
                f_listdot = 1;
 
        if (!getuid())
                f_listdot = 1;
 

-       while ((ch = getopt(argc, argv, "1ACFLRTacdfgiklqrstu")) != EOF) {
+       fts_options = FTS_PHYSICAL;
+       while ((ch = getopt(argc, argv, "1ACFLRTacdfgiloqrstu")) != EOF) {

                switch (ch) {
                /*
                switch (ch) {
                /*

-                * -1, -C and -l all override each other
-                * so shell aliasing works right
+                * The -1, -C and -l options all override each other so shell
+                * aliasing works right.

                 */
                case '1':
                        f_singlecol = 1;
                 */
                case '1':
                        f_singlecol = 1;


@@ -109,7 +111,7 @@ main(argc, argv)
                        f_longform = 1;
                        f_column = f_singlecol = 0;
                        break;
                        f_longform = 1;
                        f_column = f_singlecol = 0;
                        break;

-               /* -c and -u override each other */
+               /* The -c and -u options override each other. */

                case 'c':
                        f_statustime = 1;
                        f_accesstime = 0;
                case 'c':
                        f_statustime = 1;
                        f_accesstime = 0;


@@ -122,33 +124,35 @@ main(argc, argv)
                        f_type = 1;
                        break;
                case 'L':
                        f_type = 1;
                        break;
                case 'L':

-                       f_ignorelink = 1;
+                       fts_options &= ~FTS_PHYSICAL;
+                       fts_options |= FTS_LOGICAL;

                        break;
                case 'R':
                        f_recursive = 1;
                        break;
                case 'a':
                        break;
                case 'R':
                        f_recursive = 1;
                        break;
                case 'a':

-                       f_listalldot = 1;
+                       fts_options |= FTS_SEEDOT;

                        /* FALLTHROUGH */
                case 'A':
                        f_listdot = 1;
                        break;
                        /* FALLTHROUGH */
                case 'A':
                        f_listdot = 1;
                        break;

+               /* The -d option turns off the -R option. */

                case 'S':
                        Sflg++; /* fall into... */
                case 'd':
                        f_listdir = 1;
                case 'S':
                        Sflg++; /* fall into... */
                case 'd':
                        f_listdir = 1;

+                       f_recursive = 0;

                        break;
                case 'f':
                        f_nosort = 1;
                        break;
                        break;
                case 'f':
                        f_nosort = 1;
                        break;

-               case 'g':
-                       f_group = 1;
+               case 'g':               /* Compatibility with 4.3BSD. */

                        break;
                case 'i':
                        f_inode = 1;
                        break;
                        break;
                case 'i':
                        f_inode = 1;
                        break;

-               case 'k':
-                       f_kblocks = 1;
+               case 'o':
+                       f_flags = 1;

                        break;
                case 'q':
                        f_nonprint = 1;
                        break;
                case 'q':
                        f_nonprint = 1;


@@ -173,15 +177,27 @@ main(argc, argv)
        argc -= optind;
        argv += optind;
 
        argc -= optind;
        argv += optind;
 

-       /* -d turns off -R */
-       if (f_listdir)
-               f_recursive = 0;
+       /*
+        * If not -F, -i, -l, -s or -t options, don't require stat
+        * information.
+        */
+       if (!f_inode && !f_longform && !f_size && !f_timesort && !f_type)
+               fts_options |= FTS_NOSTAT;
+
+       /*
+        * If not -F, -d or -l options, follow any symbolic links listed on
+        * the command line.
+        */
+       if (!f_longform && !f_listdir && !f_type)
+               fts_options |= FTS_COMFOLLOW;

 
 

-       /* if need to stat files */
-       f_needstat = f_longform || f_recursive || f_timesort ||
-           f_size || f_type;
+       /* If -l or -s, figure out block size. */
+       if (f_longform || f_size) {
+               (void)getbsize(&notused, &blocksize);
+               blocksize /= 512;
+       }

 
 

-       /* select a sort function */
+       /* Select a sort function. */

        if (f_reversesort) {
                if (!f_timesort)
                        sortfcn = revnamecmp;
        if (f_reversesort) {
                if (!f_timesort)
                        sortfcn = revnamecmp;


@@ -189,7 +205,7 @@ main(argc, argv)
                        sortfcn = revacccmp;
                else if (f_statustime)
                        sortfcn = revstatcmp;
                        sortfcn = revacccmp;
                else if (f_statustime)
                        sortfcn = revstatcmp;

-               else /* use modification time */
+               else /* Use modification time. */

                        sortfcn = revmodcmp;
        } else {
                if (!f_timesort)
                        sortfcn = revmodcmp;
        } else {
                if (!f_timesort)


@@ -198,11 +214,11 @@ main(argc, argv)
                        sortfcn = acccmp;
                else if (f_statustime)
                        sortfcn = statcmp;
                        sortfcn = acccmp;
                else if (f_statustime)
                        sortfcn = statcmp;

-               else /* use modification time */
+               else /* Use modification time. */

                        sortfcn = modcmp;
        }
 
                        sortfcn = modcmp;
        }
 

-       /* select a print function */
+       /* Select a print function. */

        if (f_singlecol)
                printfcn = printscol;
        else if (f_longform)
        if (f_singlecol)
                printfcn = printscol;
        else if (f_longform)


@@ -210,261 +226,257 @@ main(argc, argv)
        else
                printfcn = printcol;
 
        else
                printfcn = printcol;
 

-       /* if -l, -d or -F, and not ignoring the link, use lstat() */
-       statfcn =
-           (f_longform || f_listdir || f_type) && !f_ignorelink ? lstat : stat;
-
-       if (!argc) {
-               static char dot[] = ".";
-
-               argc = 1;
-               argv[0] = dot;
-               argv[1] = NULL;
-       }
-       doargs(argc, argv);
+       if (argc)
+               traverse(argc, argv, fts_options);
+       else
+               traverse(1, dotav, fts_options);

        exit(0);
 }
 
        exit(0);
 }
 

-static char path[MAXPATHLEN + 1];
-static char *endofpath = path;
+static int output;                     /* If anything output. */

 
 

+/*
+ * Traverse() walks the logical directory structure specified by the argv list
+ * in the order specified by the mastercmp() comparison function.  During the
+ * traversal it passes linked lists of structures to display() which represent
+ * a superset (may be exact set) of the files to be displayed.
+ */

 static void
 static void

-doargs(argc, argv)
-       int argc;
-       char **argv;
+traverse(argc, argv, options)
+       int argc, options;
+       char *argv[];

 {
 {

-       register LS *dstatp, *rstatp;
-       register int cnt, dircnt, maxlen, regcnt;
-       LS *dstats, *rstats;
-       struct stat sb;
-       char top[MAXPATHLEN + 1];
-       u_long blocks;
+       FTS *ftsp;
+       FTSENT *p, *chp;
+       int ch_options;
+
+       if ((ftsp =
+           fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
+               err(1, NULL);
+
+       display(NULL, fts_children(ftsp, 0));
+       if (f_listdir)
+               return;

 
        /*
 
        /*

-        * walk through the operands, building separate arrays of LS
-        * structures for directory and non-directory files.
+        * If not recursing down this tree and don't need stat info, just get
+        * the names.

         */
         */

-       dstats = rstats = NULL;
-       for (dircnt = regcnt = 0; *argv; ++argv) {
-               if (statfcn(*argv, &sb) &&
-                   (statfcn == lstat || lstat(*argv, &sb))) {
-                       if (errno == ENOENT) {
-                               warn("%s: %s", *argv, strerror(errno));
-                               continue;
-                       }
-                       err("%s: %s", *argv, strerror(errno));
-               }
-               if (S_ISDIR(sb.st_mode) && !f_listdir) {
-                       if (!dstats)
-                               dstatp = dstats =
-                                   emalloc((u_int)argc * (sizeof(LS)));
-                       dstatp->name = *argv;
-                       dstatp->lstat = sb;
-                       ++dstatp;
-                       ++dircnt;
-               }
-               else {
-                       if (!rstats) {
-                               rstatp = rstats =
-                                   emalloc((u_int)argc * (sizeof(LS)));
-                               blocks = 0;
-                               maxlen = -1;
-                       }
-                       rstatp->name = *argv;
-                       rstatp->lstat = sb;
+       ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;

 
 

-                       /* save name length for -C format */
-                       rstatp->len = strlen(*argv);
-
-                       if (f_nonprint)
-                               prcopy(*argv, *argv, rstatp->len);
+       while ((p = fts_read(ftsp)) != NULL)
+               switch (p->fts_info) {
+               case FTS_DC:
+                       warnx("%s: directory causes a cycle", p->fts_name);
+                       break;
+               case FTS_DNR:
+               case FTS_ERR:
+                       warnx("%s: %s", p->fts_name, strerror(p->fts_errno));
+                       break;
+               case FTS_D:
+                       if (p->fts_level != FTS_ROOTLEVEL &&
+                           p->fts_name[0] == '.' && !f_listdot)
+                               break;

 
 

-                       /* calculate number of blocks if -l/-s formats */
-                       if (f_longform || f_size)
-                               blocks += sb.st_blocks;
+                       /*
+                        * If already output something, put out a newline as
+                        * a separator.  If multiple arguments, precede each
+                        * directory with its name.
+                        */
+                       if (output)
+                               (void)printf("\n%s:\n", p->fts_path);
+                       else if (argc > 1) {
+                               (void)printf("%s:\n", p->fts_path);
+                               output = 1;
+                       }

 
 

-                       /* save max length if -C format */
-                       if (f_column && maxlen < rstatp->len)
-                               maxlen = rstatp->len;
+                       chp = fts_children(ftsp, ch_options);
+                       display(p, chp);

 
 

-                       ++rstatp;
-                       ++regcnt;
-               }
-       }
-       /* display regular files */
-       if (regcnt) {
-               rstats[0].lstat.st_btotal = blocks;
-               rstats[0].lstat.st_maxlen = maxlen;
-               displaydir(rstats, regcnt);
-               f_newline = f_dirname = 1;
-       }
-       /* display directories */
-       if (dircnt) {
-               register char *p;
-
-               f_total = 1;
-               if (dircnt > 1) {
-                       (void)getwd(top);
-                       qsort((char *)dstats, dircnt, sizeof(LS), sortfcn);
-                       f_dirname = 1;
-               }
-               for (cnt = 0; cnt < dircnt; ++dstats) {
-                       for (endofpath = path, p = dstats->name;
-                           *endofpath = *p++; ++endofpath);
-                       subdir(dstats);
-                       f_newline = 1;
-                       if (++cnt < dircnt && chdir(top))
-                               err("%s: %s", top, strerror(errno));
+                       if (!f_recursive && chp != NULL)
+                               (void)fts_set(ftsp, p, FTS_SKIP);
+                       break;

                }
                }

-       }
+       if (errno)
+               err(1, "fts_read");

 }
 
 }
 

+/*
+ * Display() takes a linked list of FTSENT structures and passes the list
+ * along with any other necessary information to the print function.  P
+ * points to the parent directory of the display list.
+ */

 static void
 static void

-displaydir(stats, num)
-       LS *stats;
-       register int num;
+display(p, list)
+       FTSENT *p, *list;

 {
 {

-       register char *p, *savedpath;
-       LS *lp;
+       struct stat *sp;
+       DISPLAY d;
+       FTSENT *cur;
+       NAMES *np;
+       u_quad_t maxsize;
+       u_long btotal, maxblock, maxinode, maxlen, maxnlink;
+       int bcfile, flen, glen, ulen, maxflags, maxgroup, maxuser;
+       int entries, needstats;
+       char *user, *group, *flags, buf[20];    /* 32 bits == 10 digits */

 
 

-       if (num > 1 && !f_nosort) {
-               u_long save1, save2;
-
-               save1 = stats[0].lstat.st_btotal;
-               save2 = stats[0].lstat.st_maxlen;
-               qsort((char *)stats, num, sizeof(LS), sortfcn);
-               stats[0].lstat.st_btotal = save1;
-               stats[0].lstat.st_maxlen = save2;
-       }
+       /*
+        * If list is NULL there are two possibilities: that the parent
+        * directory p has no children, or that fts_children() returned an
+        * error.  We ignore the error case since it will be replicated
+        * on the next call to fts_read() on the post-order visit to the
+        * directory p, and will be signalled in traverse().
+        */
+       if (list == NULL)
+               return;

 
 

-       printfcn(stats, num);
+       needstats = f_inode || f_longform || f_size;
+       flen = 0;
+       btotal = maxblock = maxinode = maxlen = maxnlink = 0;
+       bcfile = 0;
+       maxuser = maxgroup = maxflags = 0;
+       maxsize = 0;
+       for (cur = list, entries = 0; cur; cur = cur->fts_link) {
+               if (cur->fts_info == FTS_ERR || cur->fts_info == FTS_NS) {
+                       warnx("%s: %s",
+                           cur->fts_name, strerror(cur->fts_errno));
+                       cur->fts_number = NO_PRINT;
+                       continue;
+               }

 
 

-       if (f_recursive) {
-               savedpath = endofpath;
-               for (lp = stats; num--; ++lp) {
-                       if (!S_ISDIR(lp->lstat.st_mode))
+               /*
+                * P is NULL if list is the argv list, to which different rules
+                * apply.
+                */
+               if (p == NULL) {
+                       /* Directories will be displayed later. */
+                       if (cur->fts_info == FTS_D && !f_listdir) {
+                               cur->fts_number = NO_PRINT;

                                continue;
                                continue;

-                       p = lp->name;
-                       if (p[0] == '.' && (!p[1] || p[1] == '.' && !p[2]))
+                       }
+               } else {
+                       /* Only display dot file if -a/-A set. */
+                       if (cur->fts_name[0] == '.' && !f_listdot) {
+                               cur->fts_number = NO_PRINT;

                                continue;
                                continue;

-                       if (endofpath != path && endofpath[-1] != '/')
-                               *endofpath++ = '/';
-                       for (; *endofpath = *p++; ++endofpath);
-                       f_newline = f_dirname = f_total = 1;
-                       subdir(lp);
-                       *(endofpath = savedpath) = '\0';
+                       }

                }
                }

+               if (f_nonprint)
+                       prcopy(cur->fts_name, cur->fts_name, cur->fts_namelen);
+               if (cur->fts_namelen > maxlen)
+                       maxlen = cur->fts_namelen;
+               if (needstats) {
+                       sp = cur->fts_statp;
+                       if (sp->st_blocks > maxblock)
+                               maxblock = sp->st_blocks;
+                       if (sp->st_ino > maxinode)
+                               maxinode = sp->st_ino;
+                       if (sp->st_nlink > maxnlink)
+                               maxnlink = sp->st_nlink;
+                       if (sp->st_size > maxsize)
+                               maxsize = sp->st_size;
+
+                       btotal += sp->st_blocks;
+                       if (f_longform) {
+                               user = user_from_uid(sp->st_uid, 0);
+                               if ((ulen = strlen(user)) > maxuser)
+                                       maxuser = ulen;
+                               group = group_from_gid(sp->st_gid, 0);
+                               if ((glen = strlen(group)) > maxgroup)
+                                       maxgroup = glen;
+                               if (f_flags) {
+                                       flags =
+                                           flags_to_string(sp->st_flags, "-");
+                                       if ((flen = strlen(flags)) > maxflags)
+                                               maxflags = flen;
+                               } else
+                                       flen = 0;
+
+                               if ((np = malloc(sizeof(NAMES) +
+                                   ulen + glen + flen + 3)) == NULL)
+                                       err(1, NULL);
+
+                               np->user = &np->data[0];
+                               (void)strcpy(np->user, user);
+                               np->group = &np->data[ulen + 1];
+                               (void)strcpy(np->group, group);
+
+                               if (S_ISCHR(sp->st_mode) ||
+                                   S_ISBLK(sp->st_mode))
+                                       bcfile = 1;
+
+                               if (f_flags) {
+                                       np->flags = &np->data[ulen + glen + 2];
+                                       (void)strcpy(np->flags, flags);
+                               }
+                               cur->fts_pointer = np;
+                       }
+               }
+               ++entries;

        }
        }

-}
-
-static void
-subdir(lp)
-       LS *lp;
-{
-       LS *stats;
-       int num;
-       char *names;

 
 

-       if (f_newline)
-               (void)putchar('\n');
-       if (f_dirname)
-               (void)printf("%s:\n", path);
-
-       if (chdir(lp->name)) {
-               warn("%s: %s", lp->name, strerror(errno));
+       if (!entries)

                return;
                return;

+
+       d.list = list;
+       d.entries = entries;
+       d.maxlen = maxlen;
+       if (needstats) {
+               d.bcfile = bcfile;
+               d.btotal = btotal;
+               (void)snprintf(buf, sizeof(buf), "%lu", maxblock);
+               d.s_block = strlen(buf);
+               d.s_flags = maxflags;
+               d.s_group = maxgroup;
+               (void)snprintf(buf, sizeof(buf), "%lu", maxinode);
+               d.s_inode = strlen(buf);
+               (void)snprintf(buf, sizeof(buf), "%lu", maxnlink);
+               d.s_nlink = strlen(buf);
+               (void)snprintf(buf, sizeof(buf), "%qu", maxsize);
+               d.s_size = strlen(buf);
+               d.s_user = maxuser;

        }
        }

-       if (num = tabdir(lp, &stats, &names)) {
-               displaydir(stats, num);
-               free(stats);
-               free(names);
-       }
-       if (chdir(".."))
-               err("..: %s", strerror(errno));
+
+       printfcn(&d);
+       output = 1;
+
+       if (f_longform)
+               for (cur = list; cur; cur = cur->fts_link)
+                       free(cur->fts_pointer);

 }
 
 }
 

+/*
+ * Ordering for mastercmp:
+ * If ordering the argv (fts_level = FTS_ROOTLEVEL) return non-directories
+ * as larger than directories.  Within either group, use the sort function.
+ * All other levels use the sort function.  Error entries remain unsorted.
+ */

 static int
 static int

-tabdir(lp, s_stats, s_names)
-       LS *lp, **s_stats;
-       char **s_names;
+mastercmp(a, b)
+       const FTSENT **a, **b;

 {
 {

-       register DIR *dirp;
-       register int cnt, maxentry, maxlen;
-       register char *p, *names;
-       struct dirent *dp;
-       LS *stats;
-       u_long blocks;
-
-       if (!(dirp = opendir("."))) {
-               warn("%s: %s", lp->name, strerror(errno));
-               return (0);
-       }
-       blocks = maxentry = maxlen = 0;
-       stats = NULL;
-       for (cnt = 0; dp = readdir(dirp);) {
-               /* this does -A and -a */
-               p = dp->d_name;
-               if (p[0] == '.') {
-                       if (!f_listdot)
-                               continue;
-                       if (!f_listalldot && (!p[1] || p[1] == '.' && !p[2]))
-                               continue;
-               }
-               if (cnt == maxentry) {
-                       if (!maxentry)
-                               *s_names = names =
-                                   emalloc((u_int)lp->lstat.st_size);
-#define        DEFNUM  256
-                       maxentry += DEFNUM;
-                       if (!(*s_stats = stats = realloc((char *)stats,
-                           (u_int)maxentry * sizeof(LS))))
-                               err("%s", strerror(errno));
-               }
-               if (f_needstat && statfcn(dp->d_name, &stats[cnt].lstat) &&
-                   statfcn == stat && lstat(dp->d_name, &stats[cnt].lstat)) {
-                       /*
-                        * don't exit -- this could be an NFS mount that has
-                        * gone away.  Flush stdout so the messages line up.
-                        */
-                       (void)fflush(stdout);
-                       warn("%s: %s", dp->d_name, strerror(errno));
-                       continue;
-               }
-               stats[cnt].name = names;
+       int a_info, b_info;

 
 

-               if (f_nonprint)
-                       prcopy(dp->d_name, names, (int)dp->d_namlen);
-               else
-                       bcopy(dp->d_name, names, (int)dp->d_namlen);
-               names += dp->d_namlen;
-               *names++ = '\0';
-
-               /*
-                * get the inode from the directory, so the -f flag
-                * works right.
-                */
-               stats[cnt].lstat.st_ino = dp->d_ino;
+       a_info = (*a)->fts_info;
+       if (a_info == FTS_ERR)
+               return (0);
+       b_info = (*b)->fts_info;
+       if (b_info == FTS_ERR)
+               return (0);

 
 

-               /* save name length for -C format */
-               stats[cnt].len = dp->d_namlen;
+       if (a_info == FTS_NS || b_info == FTS_NS)
+               return (namecmp(*a, *b));

 
 

-               /* calculate number of blocks if -l/-s formats */
-               if (f_longform || f_size)
-                       blocks += stats[cnt].lstat.st_blocks;
+       if (a_info == b_info)
+               return (sortfcn(*a, *b));

 
 

-               /* save max length if -C format */
-               if (f_column && maxlen < (int)dp->d_namlen)
-                       maxlen = dp->d_namlen;
-               ++cnt;
-       }
-       (void)closedir(dirp);
-
-       if (cnt) {
-               stats[0].lstat.st_btotal = blocks;
-               stats[0].lstat.st_maxlen = maxlen;
-       } else if (stats) {
-               free(stats);
-               free(names);
-       }
-       return (cnt);
+       if ((*a)->fts_level == FTS_ROOTLEVEL)
+               if (a_info == FTS_D)
+                       return (1);
+               else if (b_info == FTS_D)
+                       return (-1);
+               else
+                       return (sortfcn(*a, *b));
+       else
+               return (sortfcn(*a, *b));

 }
 }