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minix/usr.bin/stat/stat.c

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import NetBSD stat
2011-07-18 15:49:37 +02:00
/* $NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $ */
/*
* 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(lint)
__RCSID("$NetBSD: stat.c,v 1.33 2011/01/15 22:54:10 njoly Exp $");
#endif
#if ! HAVE_NBTOOL_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_BIRTHTIMENSEC 1
#define HAVE_STRUCT_STAT_ST_MTIMENSEC 1
#ifdef __minix
/* Not supported in Minix. */
#define HAVE_DEVNAME 0
#else /* __minix */
#define HAVE_DEVNAME 1
#endif /* __minx */
#endif /* HAVE_NBTOOL_CONFIG_H */
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <grp.h>
#include <limits.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: (%04OLp/%.10Sp) Uid: (%5u/%8Su) Gid: (%5g/%8Sg)%n" \
"Device: %Hd,%Ld Inode: %i Links: %l%n" \
"Access: %Sa%n" \
"Modify: %Sm%n" \
"Change: %Sc"
#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);
const char *timefmt;
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, fn, nonl, quiet;
const char *statfmt, *options, *synopsis;
am_readlink = 0;
lsF = 0;
fmtchar = '\0';
usestat = 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:FlLnqrst:x";
synopsis = "[-FlLnqrsx] [-f format] [-t timefmt] [file ...]";
}
while ((ch = getopt(argc, argv, options)) != -1)
switch (ch) {
case 'F':
lsF = 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)
rc = fstat(STDIN_FILENO, &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(argv[0], &st)) == -1 &&
errno == ENOENT &&
(rc = lstat(argv[0], &st)) == -1)
errno = ENOENT;
}
else
rc = lstat(argv[0], &st);
if (rc == -1) {
errs = 1;
linkfail = 1;
if (!quiet)
warn("%s: %s",
argc == 0 ? "(stdin)" : argv[0],
usestat ? "stat" : "lstat");
}
else
output(&st, argv[0], statfmt, fn, nonl);
argv++;
argc--;
fn++;
} while (argc > 0);
return (am_readlink ? linkfail : errs);
}
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];
struct passwd *pw;
struct group *gr;
struct tm *tm;
time_t secs;
long nsecs;
int l, small, formats, gottime, shift;
formats = 0;
small = 0;
gottime = 0;
secs = 0;
nsecs = 0;
shift = 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;
if ((pw = getpwuid(st->st_uid)) != NULL)
sdata = pw->pw_name;
else {
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;
if ((gr = getgrgid(st->st_gid)) != NULL)
sdata = gr->gr_name;
else {
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:
gottime = 1;
secs = st->st_atime;
#if HAVE_STRUCT_STAT_ST_MTIMENSEC
nsecs = st->st_atimensec;
#endif
/* FALLTHROUGH */
case SHOW_st_mtime:
if (!gottime) {
gottime = 1;
secs = st->st_mtime;
#if HAVE_STRUCT_STAT_ST_MTIMENSEC
nsecs = st->st_mtimensec;
#endif
}
/* FALLTHROUGH */
case SHOW_st_ctime:
if (!gottime) {
gottime = 1;
secs = st->st_ctime;
#if HAVE_STRUCT_STAT_ST_MTIMENSEC
nsecs = st->st_ctimensec;
#endif
}
/* FALLTHROUGH */
#if HAVE_STRUCT_STAT_ST_BIRTHTIME
case SHOW_st_btime:
if (!gottime) {
gottime = 1;
secs = st->st_birthtime;
#if HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC
nsecs = st->st_birthtimensec;
#endif /* HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC */
}
#endif /* HAVE_STRUCT_STAT_ST_BIRTHTIME */
small = (sizeof(secs) == 4);
data = secs;
tm = localtime(&secs);
if (tm == NULL) {
secs = 0;
tm = localtime(&secs);
}
(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;
switch (hilo) {
case HIGH_PIECE:
shift = 30; /* gigabytes */
hilo = 0;
break;
case MIDDLE_PIECE:
shift = 20; /* megabytes */
hilo = 0;
break;
case LOW_PIECE:
shift = 10; /* kilobytes */
hilo = 0;
break;
}
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 = NULL;
formats = FMTF_DECIMAL | FMTF_OCTAL | FMTF_UNSIGNED | FMTF_HEX;
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;
#ifdef S_IFSOCK
case S_IFSOCK: sdata = "="; break;
#endif
#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;
#ifdef S_IFSOCK
case S_IFSOCK: sdata = "Socket"; break;
#endif
#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;
if (file == NULL) {
(void)strlcpy(path, "(stdin)", sizeof(path));
if (hilo == HIGH_PIECE || hilo == LOW_PIECE)
hilo = 0;
}
else if (hilo == 0)
(void)strlcpy(path, file, sizeof(path));
else {
char *s;
(void)strlcpy(path, file, sizeof(path));
s = strrchr(path, '/');
if (s != NULL) {
/* trim off trailing /'s */
while (s != path &&
s[0] == '/' && s[1] == '\0')
*s-- = '\0';
s = strrchr(path, '/');
}
if (hilo == HIGH_PIECE) {
if (s == NULL)
(void)strlcpy(path, ".", sizeof(path));
else {
while (s != path && s[0] == '/')
*s-- = '\0';
}
hilo = 0;
}
else if (hilo == LOW_PIECE) {
if (s != NULL && s[1] != '\0')
(void)strlcpy(path, s + 1,
sizeof(path));
hilo = 0;
}
}
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)secs));
}
/*
* 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", prec > 9 ? 9 : prec);
(void)strcat(lfmt, tmp);
/*
* For precision of less that nine digits, trim off the
* less significant figures.
*/
for (; prec < 9; prec++)
nsecs /= 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)secs, nsecs);
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;
}
/*
* shift and round to nearest for kilobytes, megabytes,
* gigabytes.
*/
if (shift > 0) {
data >>= (shift - 1);
data++;
data >>= 1;
}
return (snprintf(buf, blen, lfmt, data));
}
Reference in a new issue Copy permalink