Import stat.c from FreeBSD main 20f8331aca892ff812510609b3bc4e747b201197

1 files changed, 1099 insertions, 0 deletions

diff --git a/src/poudriere-sh/stat.c b/src/poudriere-sh/stat.c
new file mode 100644
index 00000000..9d94399a
--- /dev/null
+++ b/src/poudriere-sh/stat.c
@@ -0,0 +1,1099 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-NetBSD
+ *
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Andrew Brown.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
+#if 0
+#ifndef lint
+__RCSID("$NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $"
+"$OpenBSD: stat.c,v 1.14 2009/06/24 09:44:25 sobrado Exp $");
+#endif
+#endif
+
+__FBSDID("$FreeBSD$");
+
+#if HAVE_CONFIG_H
+#include "config.h" 
+#else  /* HAVE_CONFIG_H */
+#define HAVE_STRUCT_STAT_ST_FLAGS 1
+#define HAVE_STRUCT_STAT_ST_GEN 1
+#define HAVE_STRUCT_STAT_ST_BIRTHTIME 1
+#define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
+#define HAVE_DEVNAME 1
+#endif /* HAVE_CONFIG_H */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <grp.h>
+#include <limits.h>
+#include <locale.h>
+#include <paths.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#if HAVE_STRUCT_STAT_ST_FLAGS
+#define DEF_F "%#Xf "
+#define RAW_F "%f "
+#define SHELL_F " st_flags=%f"
+#else /* HAVE_STRUCT_STAT_ST_FLAGS */
+#define DEF_F
+#define RAW_F
+#define SHELL_F
+#endif /* HAVE_STRUCT_STAT_ST_FLAGS */
+
+#if HAVE_STRUCT_STAT_ST_BIRTHTIME
+#define DEF_B "\"%SB\" "
+#define RAW_B "%B "
+#define SHELL_B "st_birthtime=%B "
+#else /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
+#define DEF_B
+#define RAW_B
+#define SHELL_B
+#endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
+
+#if HAVE_STRUCT_STAT_ST_ATIM
+#define st_atimespec st_atim
+#define st_ctimespec st_ctim
+#define st_mtimespec st_mtim
+#endif /* HAVE_STRUCT_STAT_ST_ATIM */
+
+#define DEF_FORMAT \
+	"%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" " DEF_B \
+	"%k %b " DEF_F "%N"
+#define RAW_FORMAT	"%d %i %#p %l %u %g %r %z %a %m %c " RAW_B \
+	"%k %b " RAW_F "%N"
+#define LS_FORMAT	"%Sp %l %Su %Sg %Z %Sm %N%SY"
+#define LSF_FORMAT	"%Sp %l %Su %Sg %Z %Sm %N%T%SY"
+#define SHELL_FORMAT \
+	"st_dev=%d st_ino=%i st_mode=%#p st_nlink=%l " \
+	"st_uid=%u st_gid=%g st_rdev=%r st_size=%z " \
+	"st_atime=%a st_mtime=%m st_ctime=%c " SHELL_B \
+	"st_blksize=%k st_blocks=%b" SHELL_F
+#define LINUX_FORMAT \
+	"  File: \"%N\"%n" \
+	"  Size: %-11z  FileType: %HT%n" \
+	"  Mode: (%OMp%03OLp/%.10Sp)         Uid: (%5u/%8Su)  Gid: (%5g/%8Sg)%n" \
+	"Device: %Hd,%Ld   Inode: %i    Links: %l%n" \
+	"Access: %Sa%n" \
+	"Modify: %Sm%n" \
+	"Change: %Sc%n"	\
+	" Birth: %SB"
+
+#define TIME_FORMAT	"%b %e %T %Y"
+
+#define FLAG_POUND	0x01
+#define FLAG_SPACE	0x02
+#define FLAG_PLUS	0x04
+#define FLAG_ZERO	0x08
+#define FLAG_MINUS	0x10
+
+/*
+ * These format characters must all be unique, except the magic one.
+ */
+#define FMT_MAGIC	'%'
+#define FMT_DOT		'.'
+
+#define SIMPLE_NEWLINE	'n'
+#define SIMPLE_TAB	't'
+#define SIMPLE_PERCENT	'%'
+#define SIMPLE_NUMBER	'@'
+
+#define FMT_POUND	'#'
+#define FMT_SPACE	' '
+#define FMT_PLUS	'+'
+#define FMT_ZERO	'0'
+#define FMT_MINUS	'-'
+
+#define FMT_DECIMAL 	'D'
+#define FMT_OCTAL 	'O'
+#define FMT_UNSIGNED 	'U'
+#define FMT_HEX 	'X'
+#define FMT_FLOAT 	'F'
+#define FMT_STRING 	'S'
+
+#define FMTF_DECIMAL	0x01
+#define FMTF_OCTAL	0x02
+#define FMTF_UNSIGNED	0x04
+#define FMTF_HEX	0x08
+#define FMTF_FLOAT	0x10
+#define FMTF_STRING	0x20
+
+#define HIGH_PIECE	'H'
+#define MIDDLE_PIECE	'M'
+#define LOW_PIECE	'L'
+
+#define	SHOW_realpath	'R'
+#define SHOW_st_dev	'd'
+#define SHOW_st_ino	'i'
+#define SHOW_st_mode	'p'
+#define SHOW_st_nlink	'l'
+#define SHOW_st_uid	'u'
+#define SHOW_st_gid	'g'
+#define SHOW_st_rdev	'r'
+#define SHOW_st_atime	'a'
+#define SHOW_st_mtime	'm'
+#define SHOW_st_ctime	'c'
+#define SHOW_st_btime	'B'
+#define SHOW_st_size	'z'
+#define SHOW_st_blocks	'b'
+#define SHOW_st_blksize	'k'
+#define SHOW_st_flags	'f'
+#define SHOW_st_gen	'v'
+#define SHOW_symlink	'Y'
+#define SHOW_filetype	'T'
+#define SHOW_filename	'N'
+#define SHOW_sizerdev	'Z'
+
+void	usage(const char *);
+void	output(const struct stat *, const char *,
+	    const char *, int, int);
+int	format1(const struct stat *,	/* stat info */
+	    const char *,		/* the file name */
+	    const char *, int,		/* the format string itself */
+	    char *, size_t,		/* a place to put the output */
+	    int, int, int, int,		/* the parsed format */
+	    int, int);
+int	hex2byte(const char [2]);
+#if HAVE_STRUCT_STAT_ST_FLAGS
+char   *xfflagstostr(unsigned long);
+#endif
+
+static const char *timefmt;
+static int linkfail;
+
+#define addchar(s, c, nl) \
+	do { \
+		(void)fputc((c), (s)); \
+		(*nl) = ((c) == '\n'); \
+	} while (0/*CONSTCOND*/)
+
+int
+main(int argc, char *argv[])
+{
+	struct stat st;
+	int ch, rc, errs, am_readlink;
+	int lsF, fmtchar, usestat, nfs_handle, fn, nonl, quiet;
+	const char *statfmt, *options, *synopsis;
+	char dname[sizeof _PATH_DEV + SPECNAMELEN] = _PATH_DEV;
+	fhandle_t fhnd;
+	const char *file;
+
+	am_readlink = 0;
+	lsF = 0;
+	fmtchar = '\0';
+	usestat = 0;
+	nfs_handle = 0;
+	nonl = 0;
+	quiet = 0;
+	linkfail = 0;
+	statfmt = NULL;
+	timefmt = NULL;
+
+	if (strcmp(getprogname(), "readlink") == 0) {
+		am_readlink = 1;
+		options = "fn";
+		synopsis = "[-fn] [file ...]";
+		statfmt = "%Y";
+		fmtchar = 'f';
+		quiet = 1;
+	} else {
+		options = "f:FHlLnqrst:x";
+		synopsis = "[-FLnq] [-f format | -l | -r | -s | -x] "
+		    "[-t timefmt] [file|handle ...]";
+	}
+
+	while ((ch = getopt(argc, argv, options)) != -1)
+		switch (ch) {
+		case 'F':
+			lsF = 1;
+			break;
+                case 'H':
+			nfs_handle = 1;
+			break;
+		case 'L':
+			usestat = 1;
+			break;
+		case 'n':
+			nonl = 1;
+			break;
+		case 'q':
+			quiet = 1;
+			break;
+		case 'f':
+			if (am_readlink) {
+				statfmt = "%R";
+				break;
+			}
+			statfmt = optarg;
+			/* FALLTHROUGH */
+		case 'l':
+		case 'r':
+		case 's':
+		case 'x':
+			if (fmtchar != 0)
+				errx(1, "can't use format '%c' with '%c'",
+				    fmtchar, ch);
+			fmtchar = ch;
+			break;
+		case 't':
+			timefmt = optarg;
+			break;
+		default:
+			usage(synopsis);
+		}
+
+	argc -= optind;
+	argv += optind;
+	fn = 1;
+
+	if (fmtchar == '\0') {
+		if (lsF)
+			fmtchar = 'l';
+		else {
+			fmtchar = 'f';
+			statfmt = DEF_FORMAT;
+		}
+	}
+
+	if (lsF && fmtchar != 'l')
+		errx(1, "can't use format '%c' with -F", fmtchar);
+
+	switch (fmtchar) {
+	case 'f':
+		/* statfmt already set */
+		break;
+	case 'l':
+		statfmt = lsF ? LSF_FORMAT : LS_FORMAT;
+		break;
+	case 'r':
+		statfmt = RAW_FORMAT;
+		break;
+	case 's':
+		statfmt = SHELL_FORMAT;
+		break;
+	case 'x':
+		statfmt = LINUX_FORMAT;
+		if (timefmt == NULL)
+			timefmt = "%c";
+		break;
+	default:
+		usage(synopsis);
+		/*NOTREACHED*/
+	}
+
+	if (timefmt == NULL)
+		timefmt = TIME_FORMAT;
+
+	errs = 0;
+	do {
+		if (argc == 0) {
+			if (fdevname_r(STDIN_FILENO, dname +
+			    sizeof _PATH_DEV - 1, SPECNAMELEN) != NULL)
+				file = dname;
+			else
+				file = "(stdin)";
+			rc = fstat(STDIN_FILENO, &st);
+		} else {
+			int j;
+
+			file = argv[0];
+			if (nfs_handle) {
+				rc = 0;
+				bzero(&fhnd, sizeof(fhnd));
+				j = MIN(2 * sizeof(fhnd), strlen(file));
+				if ((j & 1) != 0) {
+					rc = -1;
+				} else {
+					while (j) {
+						rc = hex2byte(&file[j - 2]);
+						if (rc == -1)
+							break;
+						((char*) &fhnd)[j / 2 - 1] = rc;
+						j -= 2;
+					}
+				}
+				if (rc == -1)
+					errno = EINVAL;
+				else
+					rc = fhstat(&fhnd, &st);
+
+			} else if (usestat) {
+				/*
+				 * Try stat() and if it fails, fall back to
+				 * lstat() just in case we're examining a
+				 * broken symlink.
+				 */
+				if ((rc = stat(file, &st)) == -1 &&
+				    errno == ENOENT &&
+				    (rc = lstat(file, &st)) == -1)
+					errno = ENOENT;
+			}
+			else
+				rc = lstat(file, &st);
+		}
+
+		if (rc == -1) {
+			errs = 1;
+			linkfail = 1;
+			if (!quiet)
+				warn("%s: stat", file);
+		}
+		else
+			output(&st, file, statfmt, fn, nonl);
+
+		argv++;
+		argc--;
+		fn++;
+	} while (argc > 0);
+
+	return (am_readlink ? linkfail : errs);
+}
+
+#if HAVE_STRUCT_STAT_ST_FLAGS
+/*
+ * fflagstostr() wrapper that leaks only once
+ */
+char *
+xfflagstostr(unsigned long fflags)
+{
+	static char *str = NULL;
+
+	if (str != NULL)
+		free(str);
+
+	str = fflagstostr(fflags);
+	if (str == NULL)
+		err(1, "fflagstostr");
+	return (str);
+}
+#endif /* HAVE_STRUCT_STAT_ST_FLAGS */
+
+void
+usage(const char *synopsis)
+{
+
+	(void)fprintf(stderr, "usage: %s %s\n", getprogname(), synopsis);
+	exit(1);
+}
+
+/* 
+ * Parses a format string.
+ */
+void
+output(const struct stat *st, const char *file,
+    const char *statfmt, int fn, int nonl)
+{
+	int flags, size, prec, ofmt, hilo, what;
+	char buf[PATH_MAX + 4 + 1];
+	const char *subfmt;
+	int nl, t, i;
+
+	nl = 1;
+	while (*statfmt != '\0') {
+
+		/*
+		 * Non-format characters go straight out.
+		 */
+		if (*statfmt != FMT_MAGIC) {
+			addchar(stdout, *statfmt, &nl);
+			statfmt++;
+			continue;
+		}
+
+		/*
+		 * The current format "substring" starts here,
+		 * and then we skip the magic.
+		 */
+		subfmt = statfmt;
+		statfmt++;
+
+		/*
+		 * Some simple one-character "formats".
+		 */
+		switch (*statfmt) {
+		case SIMPLE_NEWLINE:
+			addchar(stdout, '\n', &nl);
+			statfmt++;
+			continue;
+		case SIMPLE_TAB:
+			addchar(stdout, '\t', &nl);
+			statfmt++;
+			continue;
+		case SIMPLE_PERCENT:
+			addchar(stdout, '%', &nl);
+			statfmt++;
+			continue;
+		case SIMPLE_NUMBER: {
+			char num[12], *p;
+
+			snprintf(num, sizeof(num), "%d", fn);
+			for (p = &num[0]; *p; p++)
+				addchar(stdout, *p, &nl);
+			statfmt++;
+			continue;
+		}
+		}
+
+		/*
+		 * This must be an actual format string.  Format strings are
+		 * similar to printf(3) formats up to a point, and are of
+		 * the form:
+		 *
+		 *	%	required start of format
+		 *	[-# +0]	opt. format characters
+		 *	size	opt. field width
+		 *	.	opt. decimal separator, followed by
+		 *	prec	opt. precision
+		 *	fmt	opt. output specifier (string, numeric, etc.)
+		 *	sub	opt. sub field specifier (high, middle, low)
+		 *	datum	required field specifier (size, mode, etc)
+		 *
+		 * Only the % and the datum selector are required.  All data
+		 * have reasonable default output forms.  The "sub" specifier
+		 * only applies to certain data (mode, dev, rdev, filetype).
+		 * The symlink output defaults to STRING, yet will only emit
+		 * the leading " -> " if STRING is explicitly specified.  The
+		 * sizerdev datum will generate rdev output for character or
+		 * block devices, and size output for all others.
+		 */
+		flags = 0;
+		do {
+			if      (*statfmt == FMT_POUND)
+				flags |= FLAG_POUND;
+			else if (*statfmt == FMT_SPACE)
+				flags |= FLAG_SPACE;
+			else if (*statfmt == FMT_PLUS)
+				flags |= FLAG_PLUS;
+			else if (*statfmt == FMT_ZERO)
+				flags |= FLAG_ZERO;
+			else if (*statfmt == FMT_MINUS)
+				flags |= FLAG_MINUS;
+			else
+				break;
+			statfmt++;
+		} while (1/*CONSTCOND*/);
+
+		size = -1;
+		if (isdigit((unsigned)*statfmt)) {
+			size = 0;
+			while (isdigit((unsigned)*statfmt)) {
+				size = (size * 10) + (*statfmt - '0');
+				statfmt++;
+				if (size < 0)
+					goto badfmt;
+			}
+		}
+
+		prec = -1;
+		if (*statfmt == FMT_DOT) {
+			statfmt++;
+
+			prec = 0;
+			while (isdigit((unsigned)*statfmt)) {
+				prec = (prec * 10) + (*statfmt - '0');
+				statfmt++;
+				if (prec < 0)
+					goto badfmt;
+			}
+		}
+
+#define fmtcase(x, y)		case (y): (x) = (y); statfmt++; break
+#define fmtcasef(x, y, z)	case (y): (x) = (z); statfmt++; break
+		switch (*statfmt) {
+			fmtcasef(ofmt, FMT_DECIMAL,	FMTF_DECIMAL);
+			fmtcasef(ofmt, FMT_OCTAL,	FMTF_OCTAL);
+			fmtcasef(ofmt, FMT_UNSIGNED,	FMTF_UNSIGNED);
+			fmtcasef(ofmt, FMT_HEX,		FMTF_HEX);
+			fmtcasef(ofmt, FMT_FLOAT,	FMTF_FLOAT);
+			fmtcasef(ofmt, FMT_STRING,	FMTF_STRING);
+		default:
+			ofmt = 0;
+			break;
+		}
+
+		switch (*statfmt) {
+			fmtcase(hilo, HIGH_PIECE);
+			fmtcase(hilo, MIDDLE_PIECE);
+			fmtcase(hilo, LOW_PIECE);
+		default:
+			hilo = 0;
+			break;
+		}
+
+		switch (*statfmt) {
+			fmtcase(what, SHOW_realpath);
+			fmtcase(what, SHOW_st_dev);
+			fmtcase(what, SHOW_st_ino);
+			fmtcase(what, SHOW_st_mode);
+			fmtcase(what, SHOW_st_nlink);
+			fmtcase(what, SHOW_st_uid);
+			fmtcase(what, SHOW_st_gid);
+			fmtcase(what, SHOW_st_rdev);
+			fmtcase(what, SHOW_st_atime);
+			fmtcase(what, SHOW_st_mtime);
+			fmtcase(what, SHOW_st_ctime);
+			fmtcase(what, SHOW_st_btime);
+			fmtcase(what, SHOW_st_size);
+			fmtcase(what, SHOW_st_blocks);
+			fmtcase(what, SHOW_st_blksize);
+			fmtcase(what, SHOW_st_flags);
+			fmtcase(what, SHOW_st_gen);
+			fmtcase(what, SHOW_symlink);
+			fmtcase(what, SHOW_filetype);
+			fmtcase(what, SHOW_filename);
+			fmtcase(what, SHOW_sizerdev);
+		default:
+			goto badfmt;
+		}
+#undef fmtcasef
+#undef fmtcase
+
+		t = format1(st,
+		     file,
+		     subfmt, statfmt - subfmt,
+		     buf, sizeof(buf),
+		     flags, size, prec, ofmt, hilo, what);
+
+		for (i = 0; i < t && i < (int)(sizeof(buf) - 1); i++)
+			addchar(stdout, buf[i], &nl);
+
+		continue;
+
+	badfmt:
+		errx(1, "%.*s: bad format",
+		    (int)(statfmt - subfmt + 1), subfmt);
+	}
+
+	if (!nl && !nonl)
+		(void)fputc('\n', stdout);
+	(void)fflush(stdout);
+}
+
+/*
+ * Arranges output according to a single parsed format substring.
+ */
+int
+format1(const struct stat *st,
+    const char *file,
+    const char *fmt, int flen,
+    char *buf, size_t blen,
+    int flags, int size, int prec, int ofmt,
+    int hilo, int what)
+{
+	u_int64_t data;
+	char *stmp, lfmt[24], tmp[20];
+	const char *sdata;
+	char smode[12], sid[12], path[PATH_MAX + 4];
+	const struct timespec *tsp;
+	struct timespec ts;
+	struct tm *tm;
+	int l, small, formats;
+
+	tsp = NULL;
+	formats = 0;
+	small = 0;
+
+	/*
+	 * First, pick out the data and tweak it based on hilo or
+	 * specified output format (symlink output only).
+	 */
+	switch (what) {
+	case SHOW_st_dev:
+	case SHOW_st_rdev:
+		small = (sizeof(st->st_dev) == 4);
+		data = (what == SHOW_st_dev) ? st->st_dev : st->st_rdev;
+#if HAVE_DEVNAME
+		sdata = (what == SHOW_st_dev) ?
+		    devname(st->st_dev, S_IFBLK) :
+		    devname(st->st_rdev, 
+		    S_ISCHR(st->st_mode) ? S_IFCHR :
+		    S_ISBLK(st->st_mode) ? S_IFBLK :
+		    0U);
+		if (sdata == NULL)
+			sdata = "???";
+#endif /* HAVE_DEVNAME */
+		if (hilo == HIGH_PIECE) {
+			data = major(data);
+			hilo = 0;
+		}
+		else if (hilo == LOW_PIECE) {
+			data = minor((unsigned)data);
+			hilo = 0;
+		}
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+#if HAVE_DEVNAME
+		    FMTF_STRING;
+#else /* HAVE_DEVNAME */
+		    0;
+#endif /* HAVE_DEVNAME */
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_ino:
+		small = (sizeof(st->st_ino) == 4);
+		data = st->st_ino;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_mode:
+		small = (sizeof(st->st_mode) == 4);
+		data = st->st_mode;
+		strmode(st->st_mode, smode);
+		stmp = smode;
+		l = strlen(stmp);
+		if (stmp[l - 1] == ' ')
+			stmp[--l] = '\0';
+		if (hilo == HIGH_PIECE) {
+			data >>= 12;
+			stmp += 1;
+			stmp[3] = '\0';
+			hilo = 0;
+		}
+		else if (hilo == MIDDLE_PIECE) {
+			data = (data >> 9) & 07;
+			stmp += 4;
+			stmp[3] = '\0';
+			hilo = 0;
+		}
+		else if (hilo == LOW_PIECE) {
+			data &= 0777;
+			stmp += 7;
+			stmp[3] = '\0';
+			hilo = 0;
+		}
+		sdata = stmp;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+		    FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_OCTAL;
+		break;
+	case SHOW_st_nlink:
+		small = (sizeof(st->st_dev) == 4);
+		data = st->st_nlink;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_uid:
+		small = (sizeof(st->st_uid) == 4);
+		data = st->st_uid;
+		sdata = user_from_uid(st->st_uid, 1);
+		if (sdata == NULL) {
+			snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_uid);
+			sdata = sid;
+		}
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+		    FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_gid:
+		small = (sizeof(st->st_gid) == 4);
+		data = st->st_gid;
+		sdata = group_from_gid(st->st_gid, 1);
+		if (sdata == NULL) {
+			snprintf(sid, sizeof(sid), "(%ld)", (long)st->st_gid);
+			sdata = sid;
+		}
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+		    FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_atime:
+		tsp = &st->st_atimespec;
+		/* FALLTHROUGH */
+	case SHOW_st_mtime:
+		if (tsp == NULL)
+			tsp = &st->st_mtimespec;
+		/* FALLTHROUGH */
+	case SHOW_st_ctime:
+		if (tsp == NULL)
+			tsp = &st->st_ctimespec;
+		/* FALLTHROUGH */
+#if HAVE_STRUCT_STAT_ST_BIRTHTIME
+	case SHOW_st_btime:
+		if (tsp == NULL)
+			tsp = &st->st_birthtimespec;
+#endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
+		ts = *tsp;		/* copy so we can muck with it */
+		small = (sizeof(ts.tv_sec) == 4);
+		data = ts.tv_sec;
+		tm = localtime(&ts.tv_sec);
+		if (tm == NULL) {
+			ts.tv_sec = 0;
+			tm = localtime(&ts.tv_sec);
+		}
+		(void)setlocale(LC_TIME, "");
+		(void)strftime(path, sizeof(path), timefmt, tm);
+		sdata = path;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+		    FMTF_FLOAT | FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_DECIMAL;
+		break;
+	case SHOW_st_size:
+		small = (sizeof(st->st_size) == 4);
+		data = st->st_size;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_blocks:
+		small = (sizeof(st->st_blocks) == 4);
+		data = st->st_blocks;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+	case SHOW_st_blksize:
+		small = (sizeof(st->st_blksize) == 4);
+		data = st->st_blksize;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+#if HAVE_STRUCT_STAT_ST_FLAGS
+	case SHOW_st_flags:
+		small = (sizeof(st->st_flags) == 4);
+		data = st->st_flags;
+		sdata = xfflagstostr(st->st_flags);
+		if (*sdata == '\0')
+			sdata = "-";
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX |
+		    FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+#endif /* HAVE_STRUCT_STAT_ST_FLAGS */
+#if HAVE_STRUCT_STAT_ST_GEN
+	case SHOW_st_gen:
+		small = (sizeof(st->st_gen) == 4);
+		data = st->st_gen;
+		sdata = NULL;
+		formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
+		if (ofmt == 0)
+			ofmt = FMTF_UNSIGNED;
+		break;
+#endif /* HAVE_STRUCT_STAT_ST_GEN */
+	case SHOW_realpath:
+		small = 0;
+		data = 0;
+		if (file == NULL) {
+			(void)strlcpy(path, "(stdin)", sizeof(path));
+			sdata = path;
+		} else {
+			snprintf(path, sizeof(path), " -> ");
+			if (realpath(file, path + 4) == NULL) {
+				linkfail = 1;
+				l = 0;
+				path[0] = '\0';
+			}
+			sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
+		}
+
+		formats = FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_STRING;
+		break;
+	case SHOW_symlink:
+		small = 0;
+		data = 0;
+		if (S_ISLNK(st->st_mode)) {
+			snprintf(path, sizeof(path), " -> ");
+			l = readlink(file, path + 4, sizeof(path) - 4 - 1);
+			if (l == -1) {
+				linkfail = 1;
+				l = 0;
+				path[0] = '\0';
+			}
+			path[l + 4] = '\0';
+			sdata = path + (ofmt == FMTF_STRING ? 0 : 4);
+		}
+		else {
+			linkfail = 1;
+			sdata = "";
+		}
+		formats = FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_STRING;
+		break;
+	case SHOW_filetype:
+		small = 0;
+		data = 0;
+		sdata = "";
+		if (hilo == 0 || hilo == LOW_PIECE) {
+			switch (st->st_mode & S_IFMT) {
+			case S_IFIFO:	sdata = "|";	break;
+			case S_IFDIR:	sdata = "/";	break;
+			case S_IFREG:
+				if (st->st_mode &
+				    (S_IXUSR | S_IXGRP | S_IXOTH))
+					sdata = "*";
+				break;
+			case S_IFLNK:	sdata = "@";	break;
+			case S_IFSOCK:	sdata = "=";	break;
+#ifdef S_IFWHT
+			case S_IFWHT:	sdata = "%";	break;
+#endif /* S_IFWHT */
+#ifdef S_IFDOOR
+			case S_IFDOOR:	sdata = ">";	break;
+#endif /* S_IFDOOR */
+			}
+			hilo = 0;
+		}
+		else if (hilo == HIGH_PIECE) {
+			switch (st->st_mode & S_IFMT) {
+			case S_IFIFO:	sdata = "Fifo File";		break;
+			case S_IFCHR:	sdata = "Character Device";	break;
+			case S_IFDIR:	sdata = "Directory";		break;
+			case S_IFBLK:	sdata = "Block Device";		break;
+			case S_IFREG:	sdata = "Regular File";		break;
+			case S_IFLNK:	sdata = "Symbolic Link";	break;
+			case S_IFSOCK:	sdata = "Socket";		break;
+#ifdef S_IFWHT
+			case S_IFWHT:	sdata = "Whiteout File";	break;
+#endif /* S_IFWHT */
+#ifdef S_IFDOOR
+			case S_IFDOOR:	sdata = "Door";			break;
+#endif /* S_IFDOOR */
+			default:	sdata = "???";			break;
+			}
+			hilo = 0;
+		}
+		formats = FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_STRING;
+		break;
+	case SHOW_filename:
+		small = 0;
+		data = 0;
+		(void)strlcpy(path, file, sizeof(path));
+		sdata = path;
+		formats = FMTF_STRING;
+		if (ofmt == 0)
+			ofmt = FMTF_STRING;
+		break;
+	case SHOW_sizerdev:
+		if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode)) {
+			char majdev[20], mindev[20];
+			int l1, l2;
+
+			l1 = format1(st,
+			    file,
+			    fmt, flen,
+			    majdev, sizeof(majdev),
+			    flags, size, prec,
+			    ofmt, HIGH_PIECE, SHOW_st_rdev);
+			l2 = format1(st,
+			    file,
+			    fmt, flen,
+			    mindev, sizeof(mindev),
+			    flags, size, prec,
+			    ofmt, LOW_PIECE, SHOW_st_rdev);
+			return (snprintf(buf, blen, "%.*s,%.*s",
+			    l1, majdev, l2, mindev));
+		}
+		else {
+			return (format1(st,
+			    file,
+			    fmt, flen,
+			    buf, blen,
+			    flags, size, prec,
+			    ofmt, 0, SHOW_st_size));
+		}
+		/*NOTREACHED*/
+	default:
+		errx(1, "%.*s: bad format", (int)flen, fmt);
+	}
+
+	/*
+	 * If a subdatum was specified but not supported, or an output
+	 * format was selected that is not supported, that's an error.
+	 */
+	if (hilo != 0 || (ofmt & formats) == 0)
+		errx(1, "%.*s: bad format", (int)flen, fmt);
+
+	/*
+	 * Assemble the format string for passing to printf(3).
+	 */
+	lfmt[0] = '\0';
+	(void)strcat(lfmt, "%");
+	if (flags & FLAG_POUND)
+		(void)strcat(lfmt, "#");
+	if (flags & FLAG_SPACE)
+		(void)strcat(lfmt, " ");
+	if (flags & FLAG_PLUS)
+		(void)strcat(lfmt, "+");
+	if (flags & FLAG_MINUS)
+		(void)strcat(lfmt, "-");
+	if (flags & FLAG_ZERO)
+		(void)strcat(lfmt, "0");
+
+	/*
+	 * Only the timespecs support the FLOAT output format, and that
+	 * requires work that differs from the other formats.
+	 */ 
+	if (ofmt == FMTF_FLOAT) {
+		/*
+		 * Nothing after the decimal point, so just print seconds.
+		 */
+		if (prec == 0) {
+			if (size != -1) {
+				(void)snprintf(tmp, sizeof(tmp), "%d", size);
+				(void)strcat(lfmt, tmp);
+			}
+			(void)strcat(lfmt, "lld");
+			return (snprintf(buf, blen, lfmt,
+			    (long long)ts.tv_sec));
+		}
+
+		/*
+		 * Unspecified precision gets all the precision we have:
+		 * 9 digits.
+		 */
+		if (prec == -1)
+			prec = 9;
+
+		/*
+		 * Adjust the size for the decimal point and the digits
+		 * that will follow.
+		 */
+		size -= prec + 1;
+
+		/*
+		 * Any leftover size that's legitimate will be used.
+		 */
+		if (size > 0) {
+			(void)snprintf(tmp, sizeof(tmp), "%d", size);
+			(void)strcat(lfmt, tmp);
+		}
+		/* Seconds: time_t cast to long long. */
+		(void)strcat(lfmt, "lld");
+
+		/*
+		 * The stuff after the decimal point always needs zero
+		 * filling.
+		 */
+		(void)strcat(lfmt, ".%0");
+
+		/*
+		 * We can "print" at most nine digits of precision.  The
+		 * rest we will pad on at the end.
+		 *
+		 * Nanoseconds: long.
+		 */
+		(void)snprintf(tmp, sizeof(tmp), "%dld", MIN(prec, 9));
+		(void)strcat(lfmt, tmp);
+
+		/*
+		 * For precision of less that nine digits, trim off the
+		 * less significant figures.
+		 */
+		for (; prec < 9; prec++)
+			ts.tv_nsec /= 10;
+
+		/*
+		 * Use the format, and then tack on any zeroes that
+		 * might be required to make up the requested precision.
+		 */
+		l = snprintf(buf, blen, lfmt, (long long)ts.tv_sec, ts.tv_nsec);
+		for (; prec > 9 && l < (int)blen; prec--, l++)
+			(void)strcat(buf, "0");
+		return (l);
+	}
+
+	/*
+	 * Add on size and precision, if specified, to the format.
+	 */
+	if (size != -1) {
+		(void)snprintf(tmp, sizeof(tmp), "%d", size);
+		(void)strcat(lfmt, tmp);
+	}
+	if (prec != -1) {
+		(void)snprintf(tmp, sizeof(tmp), ".%d", prec);
+		(void)strcat(lfmt, tmp);
+	}
+
+	/*
+	 * String output uses the temporary sdata.
+	 */
+	if (ofmt == FMTF_STRING) {
+		if (sdata == NULL)
+			errx(1, "%.*s: bad format", (int)flen, fmt);
+		(void)strcat(lfmt, "s");
+		return (snprintf(buf, blen, lfmt, sdata));
+	}
+
+	/*
+	 * Ensure that sign extension does not cause bad looking output
+	 * for some forms.
+	 */
+	if (small && ofmt != FMTF_DECIMAL)
+		data = (u_int32_t)data;
+
+	/*
+	 * The four "numeric" output forms.
+	 */
+	(void)strcat(lfmt, "ll");
+	switch (ofmt) {
+	case FMTF_DECIMAL:	(void)strcat(lfmt, "d");	break;
+	case FMTF_OCTAL:		(void)strcat(lfmt, "o");	break;
+	case FMTF_UNSIGNED:	(void)strcat(lfmt, "u");	break;
+	case FMTF_HEX:		(void)strcat(lfmt, "x");	break;
+	}
+
+	return (snprintf(buf, blen, lfmt, data));
+}
+
+
+#define hex2nibble(c) (c <= '9' ? c - '0' : toupper(c) - 'A' + 10)
+int
+hex2byte(const char c[2]) {
+	if (!(ishexnumber(c[0]) && ishexnumber(c[1])))
+		return -1;
+	return (hex2nibble(c[0]) << 4) + hex2nibble(c[1]);
+}