initial population

1 files changed, 715 insertions, 0 deletions

diff --git a/bin/ls/ls.c b/bin/ls/ls.c
new file mode 100644
index 0000000..282207f
--- /dev/null
+++ b/bin/ls/ls.c
@@ -0,0 +1,715 @@
+/*	$NetBSD: ls.c,v 1.76 2017/02/06 21:06:04 rin Exp $	*/
+
+/*
+ * 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.
+ *
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\
+ The Regents of the University of California.  All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)ls.c	8.7 (Berkeley) 8/5/94";
+#else
+__RCSID("$NetBSD: ls.c,v 1.76 2017/02/06 21:06:04 rin Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fts.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <termios.h>
+#include <pwd.h>
+#include <grp.h>
+#include <util.h>
+
+#include "ls.h"
+#include "extern.h"
+
+static void	 display(FTSENT *, FTSENT *);
+static int	 mastercmp(const FTSENT **, const FTSENT **);
+static void	 traverse(int, char **, int);
+
+static void (*printfcn)(DISPLAY *);
+static int (*sortfcn)(const FTSENT *, const FTSENT *);
+
+#define	BY_NAME 0
+#define	BY_SIZE 1
+#define	BY_TIME	2
+
+long blocksize;			/* block size units */
+int termwidth = 80;		/* default terminal width */
+int sortkey = BY_NAME;
+int rval = EXIT_SUCCESS;	/* exit value - set if error encountered */
+
+/* flags */
+int f_accesstime;		/* use time of last access */
+int f_column;			/* columnated format */
+int f_columnacross;		/* columnated format, sorted across */
+int f_flags;			/* show flags associated with a file */
+int f_grouponly;		/* long listing without owner */
+int f_humanize;			/* humanize the size field */
+int f_commas;			/* separate size field with comma */
+int f_inode;			/* print inode */
+int f_listdir;			/* list actual directory, not contents */
+int f_listdot;			/* list files beginning with . */
+int f_longform;			/* long listing format */
+int f_nonprint;			/* show unprintables as ? */
+int f_nosort;			/* don't sort output */
+int f_numericonly;		/* don't convert uid/gid to name */
+int f_octal;			/* print octal escapes for nongraphic characters */
+int f_octal_escape;		/* like f_octal but use C escapes if possible */
+int f_recursive;		/* ls subdirectories also */
+int f_reversesort;		/* reverse whatever sort is used */
+int f_sectime;			/* print the real time for all files */
+int f_singlecol;		/* use single column output */
+int f_size;			/* list size in short listing */
+int f_statustime;		/* use time of last mode change */
+int f_stream;			/* stream format */
+int f_type;			/* add type character for non-regular files */
+int f_typedir;			/* add type character for directories */
+int f_whiteout;			/* show whiteout entries */
+int f_fullpath;			/* print full pathname, not filename */
+int f_leafonly;			/* when recursing, print leaf names only */
+
+__dead static void
+usage(void)
+{
+
+	(void)fprintf(stderr,
+	    "usage: %s [-1AaBbCcdFfghikLlMmnOoPpqRrSsTtuWwXx] [file ...]\n",
+	    getprogname());
+	exit(EXIT_FAILURE);
+	/* NOTREACHED */
+}
+
+int
+ls_main(int argc, char *argv[])
+{
+	static char dot[] = ".", *dotav[] = { dot, NULL };
+	struct winsize win;
+	int ch, fts_options;
+	int kflag = 0;
+	const char *p;
+
+	setprogname(argv[0]);
+	(void)setlocale(LC_ALL, "");
+
+	/* Terminal defaults to -Cq, non-terminal defaults to -1. */
+	if (isatty(STDOUT_FILENO)) {
+		if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) == 0 &&
+		    win.ws_col > 0)
+			termwidth = win.ws_col;
+		f_column = f_nonprint = 1;
+	} else
+		f_singlecol = 1;
+
+	/* Root is -A automatically. */
+	if (!getuid())
+		f_listdot = 1;
+
+	fts_options = FTS_PHYSICAL;
+	while ((ch = getopt(argc, argv, "1AaBbCcdFfghikLlMmnOoPpqRrSsTtuWwXx"))
+	    != -1) {
+		switch (ch) {
+		/*
+		 * The -1, -C, -l, -m and -x options all override each other so
+		 * shell aliasing works correctly.
+		 */
+		case '1':
+			f_singlecol = 1;
+			f_column = f_columnacross = f_longform = f_stream = 0;
+			break;
+		case 'C':
+			f_column = 1;
+			f_columnacross = f_longform = f_singlecol = f_stream =
+			    0;
+			break;
+		case 'g':
+			if (f_grouponly != -1)
+				f_grouponly = 1;
+			f_longform = 1;
+			f_column = f_columnacross = f_singlecol = f_stream = 0;
+			break;
+		case 'l':
+			f_longform = 1;
+			f_column = f_columnacross = f_singlecol = f_stream = 0;
+			/* Never let -g take precedence over -l. */
+			f_grouponly = -1;
+			break;
+		case 'm':
+			f_stream = 1;
+			f_column = f_columnacross = f_longform = f_singlecol =
+			    0;
+			break;
+		case 'x':
+			f_columnacross = 1;
+			f_column = f_longform = f_singlecol = f_stream = 0;
+			break;
+		/* The -c and -u options override each other. */
+		case 'c':
+			f_statustime = 1;
+			f_accesstime = 0;
+			break;
+		case 'u':
+			f_accesstime = 1;
+			f_statustime = 0;
+			break;
+		case 'F':
+			f_type = 1;
+			break;
+		case 'L':
+			fts_options &= ~FTS_PHYSICAL;
+			fts_options |= FTS_LOGICAL;
+			break;
+		case 'R':
+			f_recursive = 1;
+			break;
+		case 'f':
+			f_nosort = 1;
+			/* FALLTHROUGH */
+		case 'a':
+			fts_options |= FTS_SEEDOT;
+			/* FALLTHROUGH */
+		case 'A':
+			f_listdot = 1;
+			break;
+		/* The -B option turns off the -b, -q and -w options. */
+		case 'B':
+			f_nonprint = 0;
+			f_octal = 1;
+			f_octal_escape = 0;
+			break;
+		/* The -b option turns off the -B, -q and -w options. */
+		case 'b':
+			f_nonprint = 0;
+			f_octal = 0;
+			f_octal_escape = 1;
+			break;
+		/* The -d option turns off the -R option. */
+		case 'd':
+			f_listdir = 1;
+			f_recursive = 0;
+			break;
+		case 'i':
+			f_inode = 1;
+			break;
+		case 'k':
+			blocksize = 1024;
+			kflag = 1;
+			f_humanize = 0;
+			break;
+		/* The -h option forces all sizes to be measured in bytes. */
+		case 'h':
+			f_humanize = 1;
+			kflag = 0;
+			f_commas = 0;
+			break;
+		case 'M':
+			f_humanize = 0;
+			f_commas = 1;
+			break;
+		case 'n':
+			f_numericonly = 1;
+			f_longform = 1;
+			f_column = f_columnacross = f_singlecol = f_stream = 0;
+			break;
+		case 'O':
+			f_leafonly = 1;
+			break;
+		case 'o':
+			f_flags = 1;
+			break;
+		case 'P':
+			f_fullpath = 1;
+			break;
+		case 'p':
+			f_typedir = 1;
+			break;
+		/* The -q option turns off the -B, -b and -w options. */
+		case 'q':
+			f_nonprint = 1;
+			f_octal = 0;
+			f_octal_escape = 0;
+			break;
+		case 'r':
+			f_reversesort = 1;
+			break;
+		case 'S':
+			sortkey = BY_SIZE;
+			break;
+		case 's':
+			f_size = 1;
+			break;
+		case 'T':
+			f_sectime = 1;
+			break;
+		case 't':
+			sortkey = BY_TIME;
+			break;
+		case 'W':
+			f_whiteout = 1;
+			break;
+		/* The -w option turns off the -B, -b and -q options. */
+		case 'w':
+			f_nonprint = 0;
+			f_octal = 0;
+			f_octal_escape = 0;
+			break;
+		case 'X':
+			fts_options |= FTS_XDEV;
+			break;
+		default:
+		case '?':
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (f_column || f_columnacross || f_stream) {
+		if ((p = getenv("COLUMNS")) != NULL)
+			termwidth = atoi(p);
+	}
+
+	/*
+	 * If both -g and -l options, let -l take precedence.
+	 */
+	if (f_grouponly == -1)
+		f_grouponly = 0;
+
+	/*
+	 * If not -F, -i, -l, -p, -S, -s or -t options, don't require stat
+	 * information.
+	 */
+	if (!f_inode && !f_longform && !f_size && !f_type && !f_typedir &&
+	    sortkey == BY_NAME)
+		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 -W, show whiteout entries
+	 */
+#ifdef FTS_WHITEOUT
+	if (f_whiteout)
+		fts_options |= FTS_WHITEOUT;
+#endif
+
+	/* If -i, -l, or -s, figure out block size. */
+	if (f_inode || f_longform || f_size) {
+		if (!kflag)
+			(void)getbsize(NULL, &blocksize);
+		blocksize /= 512;
+	}
+
+	/* Select a sort function. */
+	if (f_reversesort) {
+		switch (sortkey) {
+		case BY_NAME:
+			sortfcn = revnamecmp;
+			break;
+		case BY_SIZE:
+			sortfcn = revsizecmp;
+			break;
+		case BY_TIME:
+			if (f_accesstime)
+				sortfcn = revacccmp;
+			else if (f_statustime)
+				sortfcn = revstatcmp;
+			else /* Use modification time. */
+				sortfcn = revmodcmp;
+			break;
+		}
+	} else {
+		switch (sortkey) {
+		case BY_NAME:
+			sortfcn = namecmp;
+			break;
+		case BY_SIZE:
+			sortfcn = sizecmp;
+			break;
+		case BY_TIME:
+			if (f_accesstime)
+				sortfcn = acccmp;
+			else if (f_statustime)
+				sortfcn = statcmp;
+			else /* Use modification time. */
+				sortfcn = modcmp;
+			break;
+		}
+	}
+
+	/* Select a print function. */
+	if (f_singlecol)
+		printfcn = printscol;
+	else if (f_columnacross)
+		printfcn = printacol;
+	else if (f_longform)
+		printfcn = printlong;
+	else if (f_stream)
+		printfcn = printstream;
+	else
+		printfcn = printcol;
+
+	if (argc)
+		traverse(argc, argv, fts_options);
+	else
+		traverse(1, dotav, fts_options);
+	return rval;
+	/* NOTREACHED */
+}
+
+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
+traverse(int argc, char *argv[], int options)
+{
+	FTS *ftsp;
+	FTSENT *p, *chp;
+	int ch_options, error;
+
+	if ((ftsp =
+	    fts_open(argv, options, f_nosort ? NULL : mastercmp)) == NULL)
+		err(EXIT_FAILURE, NULL);
+
+	display(NULL, fts_children(ftsp, 0));
+	if (f_listdir) {
+		(void)fts_close(ftsp);
+		return;
+	}
+
+	/*
+	 * If not recursing down this tree and don't need stat info, just get
+	 * the names.
+	 */
+	ch_options = !f_recursive && options & FTS_NOSTAT ? FTS_NAMEONLY : 0;
+
+	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));
+			rval = EXIT_FAILURE;
+			break;
+		case FTS_D:
+			if (p->fts_level != FTS_ROOTLEVEL &&
+			    p->fts_name[0] == '.' && !f_listdot)
+				break;
+
+			/*
+			 * If already output something, put out a newline as
+			 * a separator.  If multiple arguments, precede each
+			 * directory with its name.
+			 */
+			if (!f_leafonly) {
+				if (output)
+					(void)printf("\n%s:\n", p->fts_path);
+				else if (argc > 1) {
+					(void)printf("%s:\n", p->fts_path);
+					output = 1;
+				}
+			}
+
+			chp = fts_children(ftsp, ch_options);
+			display(p, chp);
+
+			if (!f_recursive && chp != NULL)
+				(void)fts_set(ftsp, p, FTS_SKIP);
+			break;
+		}
+	error = errno;
+	(void)fts_close(ftsp);
+	errno = error;
+	if (errno)
+		err(EXIT_FAILURE, "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
+display(FTSENT *p, FTSENT *list)
+{
+	struct stat *sp;
+	DISPLAY d;
+	FTSENT *cur;
+	NAMES *np;
+	u_int64_t btotal, stotal;
+	off_t maxsize;
+	blkcnt_t maxblock;
+	ino_t maxinode;
+	int maxmajor, maxminor;
+	uint32_t maxnlink;
+	int bcfile, entries, flen, glen, ulen, maxflags, maxgroup;
+	unsigned int maxlen;
+	int maxuser, needstats;
+	const char *user, *group;
+	char buf[21];		/* 64 bits == 20 digits, +1 for NUL */
+	char nuser[12], ngroup[12];
+	char *flags = NULL;
+
+	/*
+	 * 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;
+
+	needstats = f_inode || f_longform || f_size;
+	flen = 0;
+	maxinode = maxnlink = 0;
+	bcfile = 0;
+	maxuser = maxgroup = maxflags = maxlen = 0;
+	btotal = stotal = maxblock = maxsize = 0;
+	maxmajor = maxminor = 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;
+			rval = EXIT_FAILURE;
+			continue;
+		}
+
+		/*
+		 * 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;
+			}
+		} else {
+			/* Only display dot file if -a/-A set. */
+			if (cur->fts_name[0] == '.' && !f_listdot) {
+				cur->fts_number = NO_PRINT;
+				continue;
+			}
+		}
+		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;
+			if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode)) {
+				bcfile = 1;
+				if (major(sp->st_rdev) > maxmajor)
+					maxmajor = major(sp->st_rdev);
+				if (minor(sp->st_rdev) > maxminor)
+					maxminor = minor(sp->st_rdev);
+			}
+
+			btotal += sp->st_blocks;
+			stotal += sp->st_size;
+			if (f_longform) {
+				if (f_numericonly ||
+				    (user = user_from_uid(sp->st_uid, 0)) ==
+				    NULL) {
+					(void)snprintf(nuser, sizeof(nuser),
+					    "%u", sp->st_uid);
+					user = nuser;
+				}
+				if (f_numericonly ||
+				    (group = group_from_gid(sp->st_gid, 0)) ==
+				    NULL) {
+					(void)snprintf(ngroup, sizeof(ngroup),
+					    "%u", sp->st_gid);
+					group = ngroup;
+				}
+				if ((ulen = strlen(user)) > maxuser)
+					maxuser = ulen;
+				if ((glen = strlen(group)) > maxgroup)
+					maxgroup = glen;
+				if (f_flags) {
+					flags =
+					    flags_to_string((u_long)sp->st_flags, "-");
+					if ((flen = strlen(flags)) > maxflags)
+						maxflags = flen;
+				} else
+					flen = 0;
+
+				if ((np = malloc(sizeof(NAMES) +
+				    ulen + glen + flen + 2)) == NULL)
+					err(EXIT_FAILURE, NULL);
+
+				np->user = &np->data[0];
+				(void)strcpy(np->user, user);
+				np->group = &np->data[ulen + 1];
+				(void)strcpy(np->group, group);
+
+				if (f_flags) {
+					np->flags = &np->data[ulen + glen + 2];
+				  	(void)strcpy(np->flags, flags);
+					free(flags);
+				}
+				cur->fts_pointer = np;
+			}
+		}
+		++entries;
+	}
+
+	if (!entries)
+		return;
+
+	d.list = list;
+	d.entries = entries;
+	d.maxlen = maxlen;
+	if (needstats) {
+		d.btotal = btotal;
+		d.stotal = stotal;
+		if (f_humanize) {
+			d.s_block = 4; /* min buf length for humanize_number */
+		} else {
+			(void)snprintf(buf, sizeof(buf), "%lld",
+			    (long long)howmany(maxblock, blocksize));
+			d.s_block = strlen(buf);
+			if (f_commas) /* allow for commas before every third digit */
+				d.s_block += (d.s_block - 1) / 3;
+		}
+		d.s_flags = maxflags;
+		d.s_group = maxgroup;
+		(void)snprintf(buf, sizeof(buf), "%llu",
+		    (unsigned long long)maxinode);
+		d.s_inode = strlen(buf);
+		(void)snprintf(buf, sizeof(buf), "%u", maxnlink);
+		d.s_nlink = strlen(buf);
+		if (f_humanize) {
+			d.s_size = 4; /* min buf length for humanize_number */
+		} else {
+			(void)snprintf(buf, sizeof(buf), "%lld",
+			    (long long)maxsize);
+			d.s_size = strlen(buf);
+			if (f_commas) /* allow for commas before every third digit */
+				d.s_size += (d.s_size - 1) / 3;
+		}
+		d.s_user = maxuser;
+		if (bcfile) {
+			(void)snprintf(buf, sizeof(buf), "%d", maxmajor);
+			d.s_major = strlen(buf);
+			(void)snprintf(buf, sizeof(buf), "%d", maxminor);
+			d.s_minor = strlen(buf);
+			if (d.s_major + d.s_minor + 2 > d.s_size)
+				d.s_size = d.s_major + d.s_minor + 2;
+			else if (d.s_size - d.s_minor - 2 > d.s_major)
+				d.s_major = d.s_size - d.s_minor - 2;
+		} else {
+			d.s_major = 0;
+			d.s_minor = 0;
+		}
+	}
+
+	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
+mastercmp(const FTSENT **a, const FTSENT **b)
+{
+	int a_info, b_info;
+
+	a_info = (*a)->fts_info;
+	if (a_info == FTS_ERR)
+		return (0);
+	b_info = (*b)->fts_info;
+	if (b_info == FTS_ERR)
+		return (0);
+
+	if (a_info == FTS_NS || b_info == FTS_NS) {
+		if (b_info != FTS_NS)
+			return (1);
+		else if (a_info != FTS_NS)
+			return (-1);
+		else
+			return (namecmp(*a, *b));
+	}
+
+	if (a_info != b_info && !f_listdir &&
+	    (*a)->fts_level == FTS_ROOTLEVEL) {
+		if (a_info == FTS_D)
+			return (1);
+		else if (b_info == FTS_D)
+			return (-1);
+	}
+	return (sortfcn(*a, *b));
+}