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Virgin import of NetBSD's stat(1)

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Doug Barton 2002-06-06 19:27:17 +00:00
parent 7a0a395027
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# $FreeBSD$
PROG= stat
MAN= stat.1
SRCS= stat.c
WARNS?= 2
.include <bsd.prog.mk>

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usr.bin/stat/stat.1 Normal file
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.\" $NetBSD: stat.1,v 1.4 2002/05/09 17:52:03 atatat 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 and Jan Schaumann.
.\"
.\" 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. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the NetBSD
.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation 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 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.
.\"
.\" $FreeBSD$
.\"
.Dd April 24, 2002
.Dt STAT 1
.Os
.Sh NAME
.Nm stat
.Nd display file status
.Sh SYNOPSIS
.Nm
.Op Fl FLn
.Oo
.Fl f Ar format |
.Fl l |
.Fl r |
.Fl s |
.Fl x
.Oc
.Op Fl t Ar timefmt
.Op Ar
.Sh DESCRIPTION
The
.Nm
utility displays information about the file pointed to by
.Ar file .
Read, write or execute permissions of the named file are not required, but
all directories listed in the path name leading to the file must be
searchable. If no argument is given,
.Nm
displays information about the file descriptor for standard input.
.Pp
The information displayed is obtained by calling
.Xr lstat 2
with the given argument and evaluating the returned structure.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl F
As in
.Ic ls ,
display a slash (/) immediately after each pathname that is a directory, an
asterisk (*) after each that is executable, an at sign (@) after each symbolic
link, a percent sign (%) after each whiteout, an equal sign (=) after each
socket, and a vertical bar (|) after each that is a FIFO. The use of
.Fl F
implies
.Fl l .
.It Fl L
Use
.Xr stat 2
instead of
.Xr lstat 2 .
The information reported by
.Nm
will refer to the target of
.Ar file ,
if file is a symbolic link, and not to
.Ar file
itself.
.It Fl n
Do not force a newline to appear at the end of each piece of output.
.It Fl f Ar format
Display information using the specified format. See the FORMATS section
for a description of valid formats.
.It Fl l
Display output in
.Ic ls Fl lT
format.
.It Fl r
Display raw information. That is, for all the fields in the stat-structure,
display the raw, numerical value (for example, times in seconds since the
epoch, etc.)
.It Fl s
Display information in ``shell output'', suitable for initializing variables.
.It Fl x
Display information in a more verbose way as known from some Linux
distributions.
.It Fl t Ar timefmt
Display timestamps using the specified format. This format is
passed directly to
.Xr strftime 3 .
.El
.Ss FORMATS
Format strings are similar to
.Xr printf 3
formats in that they start with
.Cm % ,
are then followed by a sequence of formatting characters, and end in
a character that selects the field of the struct stat which is to be
formatted. If the
.Cm %
is immediately followed by one of
.Cm n ,
.Cm t ,
.Cm % ,
or
.Cm @ ,
then a newline character, a tab character, a percent character,
or the current file number is printed, otherwise the string is
examined for the following:
.Pp
Any of the following optional flags:
.Bl -tag -width Ds
.It Cm #
Selects an alternate output form for octal and hexadecimal output.
Non-zero octal output will have a leading zero, and non-zero
hexadecimal output will have ``0x'' prepended to it.
.It Cm +
Asserts that a sign indicating whether a number is positive or negative
should always be printed. Non-negative numbers are not usually printed
with a sign.
.It Cm -
Aligns string output to the left of the field, instead of to the right.
.It Cm 0
Sets the fill character for left padding to the 0 character, instead of
a space.
.It space
Reserves a space at the front of non-negative signed output fields. A
.Sq Cm +
overrides a space if both are used.
.El
.Pp
Then the following fields:
.Bl -tag -width Ds
.It Cm size
An optional decimal digit string specifying the minimum field width.
.It Cm prec
An optional precision composed of a decimal point
.Sq Cm \&.
and a decimal digit string that indicates the maximum string length,
the number of digits to appear after the decimal point in floating point
output, or the minimum number of digits to appear in numeric output.
.It Cm fmt
An optional output format specifier which is one of
.Cm D ,
.Cm O ,
.Cm U ,
.Cm X ,
.Cm F ,
or
.Cm S .
These represent signed decimal output, octal output, unsigned decimal
output, hexadecimal output, floating point output, and string output,
respectively. Some output formats do not apply to all fields.
Floating point output only applies to timespec fields (the
.Cm a ,
.Cm m ,
and
.Cm c
fields).
.Pp
The special output specifier
.Cm S
may be used to indicate that the output, if
applicable, should be in string format. May be used in combination with
.Bl -tag -width Ds
.It Cm amc
Display date in strftime(3) format.
.It Cm dr
Display actual device name.
.It Cm gu
Display group or user name.
.It Cm p
Display the mode of
.Ar file
as in
.Ic ls -lTd .
.It Cm N
Displays the name of
.Ar file .
.It Cm T
Displays the type of
.Ar file .
.It Cm Y
Insert a `` -\*[Gt] '' into the output. Note that the default output format
for
.Cm Y
is a string, but if specified explicitly, these four characters are
prepended.
.El
.It Cm sub
An optional sub field specifier (high, middle, low). Only applies to
the
.Cm p ,
.Cm d ,
.Cm r ,
and
.Cm T
output formats. It can be one of the following:
.Bl -tag -width Ds
.It Cm H
``High'' -- specifies the major number for devices from
.Cm r
or
.Cm d ,
the ``user'' bits for permissions from the string form of
.Cm p ,
the file ``type'' bits from the numeric forms of
.Cm p ,
and the long output form of
.Cm T .
.It Cm L
``Low'' -- specifies the minor number for devices from
.Cm r
or
.Cm d ,
the ``other'' bits for permissions from the string form of
.Cm p ,
the ``user'', ``group'', and ``other'' bits from the numeric forms of
.Cm p ,
and the
.Ic ls -F
style output character for file type when used with
.Cm T
(the use of
.Cm L
for this is optional).
.It Cm M
``Middle'' -- specifies the ``group'' bits for permissions from the
string output form of
.Cm p ,
or the ``suid'', ``sgid'', and ``sticky'' bits for the numeric forms of
.Cm p .
.El
.It Cm datum
A required field specifier, being one of the following:
.Bl -tag -width Ds
.It Cm d
Device upon which
.Ar file
resides.
.It Cm i
.Ar file Ap s
inode number.
.It Cm p
File type and permissions.
.It Cm l
Number of hard links to
.Ar file .
.It Cm u , g
User-id and group-id of
.Ar file Ap s
owner.
.It Cm r
Device number for character and block device special files.
.It Cm a , m , c
The time
.Ar file
was last accessed, modified, or of when the inode was last changed.
.It Cm z
The size of
.Ar file
in bytes.
.It Cm b
Number of blocks allocated for
.Ar file .
.It Cm k
Optimal file system I/O operation block size.
.It Cm f
User defined flags for
.Ar file .
.It Cm v
Inode generation number.
.El
.Pp
The following four field specifiers are not drawn directly from the
data in struct stat, but are
.Bl -tag -width Ds
.It Cm N
The name of the file.
.It Cm T
The file type, either as in
.Ic ls -F
or in a more descriptive form if the sub field specifier
.Cm H
is given.
.It Cm Y
The target of a symbolic link.
.It Cm Z
Expands to ``major,minor'' from the rdev field for character or block
special devices and gives size output for all others.
.El
.El
.Pp
Only the
.Cm %
and the field specifier are required. Most field
specifiers default to
.Cm U
as an output form, with the
exception of
.Cm p
which defaults to
.Cm O ,
.Cm a , m ,
and
.Cm c
which default to
.Cm D ,
and
.Cm Y , T ,
and
.Cm N ,
which default to
.Cm S .
.Sh EXIT STATUS
.Nm
exits 0 on success, and \*[Gt]0 if an error occurred.
.Sh EXAMPLES
Given a symbolic link ``foo'' that points from /tmp/foo to /, you would use
.Nm
as follows:
.Bd -literal -offset indent
\*[Gt] stat -F /tmp/foo
lrwxrwxrwx 1 jschauma cs 1 Apr 24 16:37:28 2002 /tmp/foo@ -\*[Gt] /
\*[Gt] stat -LF /tmp/foo
lrwxrwxrwx 16 root wheel 512 Apr 19 10:57:54 2002 /tmp/foo/
.Ed
.Pp
To initialize some shell-variables, you could use the
.Fl s
flag as follows:
.Bd -literal -offset indent
\*[Gt] csh
% eval set `stat -s .cshrc`
% echo $st_size $st_mtimespec
1148 1015432481
\*[Gt] sh
$ eval $(stat -s .profile)
$ echo $st_size $st_mtimespec
1148 1015432481
.Ed
.Pp
In order to get a list of the kind of files including files pointed to if the
file is a symbolic link, you could use the following format:
.Bd -literal -offset indent
$ stat -f "%N: %HT%SY" /tmp/*
/tmp/bar: Symbolic Link -\*[Gt] /tmp/foo
/tmp/output25568: Regular File
/tmp/blah: Directory
/tmp/foo: Symbolic Link -\*[Gt] /
.Ed
.Pp
In order to get a list of the devices, their types and the major and minor
device numbers, formatted with tabs and linebreaks, you could use the
following format:
.Bd -literal -offset indent
stat -f "Name: %N%n%tType: %HT%n%tMajor: %Hr%n%tMinor: %Lr%n%n" /dev/*
[...]
Name: /dev/wt8
Type: Block Device
Major: 3
Minor: 8
Name: /dev/zero
Type: Character Device
Major: 2
Minor: 12
.Ed
.Pp
In order to determine the permissions set on a file separately, you could use
the following format:
.Bd -literal -offset indent
\*[Gt] stat -f "%Sp -\*[Gt] owner=%SHp group=%SMp other=%SLp" .
drwxr-xr-x -\*[Gt] owner=rwx group=r-x other=r-x
.Ed
.Pp
In order to determine the three files that have been modified most recently,
you could use the following format:
.Bd -literal -offset indent
\*[Gt] stat -f "%m%t%Sm %N" /tmp/* | sort -rn | head -3 | cut -f2-
Apr 25 11:47:00 2002 /tmp/blah
Apr 25 10:36:34 2002 /tmp/bar
Apr 24 16:47:35 2002 /tmp/foo
.Ed
.Sh SEE ALSO
.Xr file 1 ,
.Xr ls 1 ,
.Xr lstat 2 ,
.Xr readlink 2 ,
.Xr stat 2 ,
.Xr printf 3 ,
.Xr strftime 3
.Sh HISTORY
The
.Nm
utility appeared in
.Nx 1.6 .
.Sh AUTHORS
The
.Nm
utility was written by Andrew Brown
.Aq atatat@netbsd.org .
This man page
was written by Jan Schaumann
.Aq jschauma@netbsd.org .

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/* $NetBSD: stat.c,v 1.3 2002/05/31 16:45:16 atatat 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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>
#ifndef lint
__RCSID("$NetBSD: stat.c,v 1.3 2002/05/31 16:45:16 atatat Exp $");
__FBSDID("$FreeBSD$");
#endif
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <unistd.h>
#include <err.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <stddef.h>
#include <stdlib.h>
#include <pwd.h>
#include <grp.h>
#define DEF_FORMAT \
"%d %i %Sp %l %Su %Sg %r %z \"%Sa\" \"%Sm\" \"%Sc\" %k %b %N"
#define RAW_FORMAT "%d %i %#p %l %u %g %r %z %a %m %c %k %b %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_atimespec=%a st_mtimespec=%m st_ctimespec=%c " \
"st_blksize=%k st_blocks=%b"
#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 HIGH_PIECE 'H'
#define MIDDLE_PIECE 'M'
#define LOW_PIECE 'L'
#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_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(void);
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);
char *timefmt;
#define addchar(b, n, l, c, nl) \
do { \
if ((*(n)) < (l)) { \
(b)[(*(n))++] = (c); \
(*nl) = ((c) == '\n'); \
} \
} while (0/*CONSTCOND*/)
int
main(int argc, char *argv[])
{
struct stat st;
int ch, rc, errs;
int lsF, fmtchar, usestat, fn, nonl;
char *statfmt;
lsF = 0;
fmtchar = '\0';
usestat = 0;
nonl = 0;
statfmt = NULL;
timefmt = NULL;
while ((ch = getopt(argc, argv, "f:FlLnrst:x")) != -1)
switch (ch) {
case 'F':
lsF = 1;
break;
case 'L':
usestat = 1;
break;
case 'n':
nonl = 1;
break;
case 'f':
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();
}
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();
/*NOTREACHED*/
}
if (timefmt == NULL)
timefmt = TIME_FORMAT;
errs = 0;
do {
if (argc == 0)
rc = fstat(STDIN_FILENO, &st);
else if (usestat)
rc = stat(argv[0], &st);
else
rc = lstat(argv[0], &st);
if (rc == -1) {
errs = 1;
warn("%s: stat", argc == 0 ? "(stdin)" : argv[0]);
}
else
output(&st, argv[0], statfmt, fn, nonl);
argv++;
argc--;
fn++;
} while (argc > 0);
return (errs);
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: %s [-FlLnrsx] [-f format] [-t timefmt] [file ...]\n",
getprogname());
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[4096], subbuf[MAXPATHLEN];
const char *subfmt;
int nl, t, i;
size_t len;
len = 0;
while (*statfmt != '\0') {
/*
* Non-format characters go straight out.
*/
if (*statfmt != FMT_MAGIC) {
addchar(buf, &len, sizeof(buf), *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(buf, &len, sizeof(buf), '\n', &nl);
statfmt++;
continue;
case SIMPLE_TAB:
addchar(buf, &len, sizeof(buf), '\t', &nl);
statfmt++;
continue;
case SIMPLE_PERCENT:
addchar(buf, &len, sizeof(buf), '%', &nl);
statfmt++;
continue;
case SIMPLE_NUMBER: {
char num[12], *p;
snprintf(num, sizeof(num), "%d", fn);
for (p = &num[0]; *p; p++)
addchar(buf, &len, sizeof(buf), *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
switch (*statfmt) {
fmtcase(ofmt, FMT_DECIMAL);
fmtcase(ofmt, FMT_OCTAL);
fmtcase(ofmt, FMT_UNSIGNED);
fmtcase(ofmt, FMT_HEX);
fmtcase(ofmt, FMT_FLOAT);
fmtcase(ofmt, FMT_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_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_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 fmtcase
t = format1(st,
file,
subfmt, statfmt - subfmt,
subbuf, sizeof(subbuf),
flags, size, prec, ofmt, hilo, what);
for (i = 0; i < t && i < sizeof(subbuf); i++)
addchar(buf, &len, sizeof(buf), subbuf[i], &nl);
continue;
badfmt:
errx(1, "%.*s: bad format",
(int)(statfmt - subfmt + 1), subfmt);
}
(void)write(STDOUT_FILENO, buf, len);
if (!nl && !nonl)
(void)write(STDOUT_FILENO, "\n", sizeof("\n") - 1);
}
/*
* 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 *sdata, lfmt[24], tmp[20];
char smode[12], sid[12], path[MAXPATHLEN + 4];
struct passwd *pw;
struct group *gr;
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;
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 = "???";
if (hilo == HIGH_PIECE) {
data = major(data);
hilo = 0;
}
else if (hilo == LOW_PIECE) {
data = minor((unsigned)data);
hilo = 0;
}
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX |
FMT_STRING;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_ino:
small = (sizeof(st->st_ino) == 4);
data = st->st_ino;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_mode:
small = (sizeof(st->st_mode) == 4);
data = st->st_mode;
strmode(st->st_mode, smode);
sdata = smode;
l = strlen(sdata);
if (sdata[l - 1] == ' ')
sdata[--l] = '\0';
if (hilo == HIGH_PIECE) {
data >>= 12;
sdata += 1;
sdata[3] = '\0';
hilo = 0;
}
else if (hilo == MIDDLE_PIECE) {
data = (data >> 9) & 07;
sdata += 4;
sdata[3] = '\0';
hilo = 0;
}
else if (hilo == LOW_PIECE) {
data &= 0777;
sdata += 7;
sdata[3] = '\0';
hilo = 0;
}
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX |
FMT_STRING;
if (ofmt == 0)
ofmt = FMT_OCTAL;
break;
case SHOW_st_nlink:
small = (sizeof(st->st_dev) == 4);
data = st->st_nlink;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_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 = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX |
FMT_STRING;
if (ofmt == 0)
ofmt = FMT_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 = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX |
FMT_STRING;
if (ofmt == 0)
ofmt = FMT_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;
ts = *tsp; /* copy so we can muck with it */
small = (sizeof(ts.tv_sec) == 4);
data = ts.tv_sec;
small = 1;
tm = localtime(&ts.tv_sec);
(void)strftime(path, sizeof(path), timefmt, tm);
sdata = path;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX |
FMT_FLOAT | FMT_STRING;
if (ofmt == 0)
ofmt = FMT_DECIMAL;
break;
case SHOW_st_size:
small = (sizeof(st->st_size) == 4);
data = st->st_size;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_blocks:
small = (sizeof(st->st_blocks) == 4);
data = st->st_blocks;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_blksize:
small = (sizeof(st->st_blksize) == 4);
data = st->st_blksize;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_flags:
small = (sizeof(st->st_flags) == 4);
data = st->st_flags;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
break;
case SHOW_st_gen:
small = (sizeof(st->st_gen) == 4);
data = st->st_gen;
sdata = NULL;
formats = FMT_DECIMAL | FMT_OCTAL | FMT_UNSIGNED | FMT_HEX;
if (ofmt == 0)
ofmt = FMT_UNSIGNED;
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);
if (l == -1) {
l = 0;
path[0] = '\0';
}
path[l + 4] = '\0';
sdata = path + (ofmt == FMT_STRING ? 0 : 4);
}
else
sdata = "";
formats = FMT_STRING;
if (ofmt == 0)
ofmt = FMT_STRING;
break;
case SHOW_filetype:
small = 0;
data = 0;
sdata = smode;
sdata[0] = '\0';
if (hilo == 0 || hilo == LOW_PIECE) {
switch (st->st_mode & S_IFMT) {
case S_IFIFO: (void)strcat(sdata, "|"); break;
case S_IFDIR: (void)strcat(sdata, "/"); break;
case S_IFREG:
if (st->st_mode &
(S_IXUSR | S_IXGRP | S_IXOTH))
(void)strcat(sdata, "*");
break;
case S_IFLNK: (void)strcat(sdata, "@"); break;
case S_IFSOCK: (void)strcat(sdata, "="); break;
case S_IFWHT: (void)strcat(sdata, "%"); break;
}
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;
case S_IFWHT: sdata = "Whiteout File"; break;
default: sdata = "???"; break;
}
hilo = 0;
}
formats = FMT_STRING;
if (ofmt == 0)
ofmt = FMT_STRING;
break;
case SHOW_filename:
small = 0;
data = 0;
if (file == NULL)
(void)strncpy(path, "(stdin)", sizeof(path));
else
(void)strncpy(path, file, sizeof(path));
sdata = path;
formats = FMT_STRING;
if (ofmt == 0)
ofmt = FMT_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 == FMT_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, "d");
return (snprintf(buf, blen, lfmt, 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);
}
(void)strcat(lfmt, "d");
/*
* 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.
*/
(void)snprintf(tmp, sizeof(tmp), "%dd", 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++)
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, ts.tv_sec, ts.tv_nsec);
for (; prec > 9 && l < 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 == FMT_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 != FMT_DECIMAL)
data = (u_int32_t)data;
/*
* The four "numeric" output forms.
*/
(void)strcat(lfmt, "ll");
switch (ofmt) {
case FMT_DECIMAL: (void)strcat(lfmt, "d"); break;
case FMT_OCTAL: (void)strcat(lfmt, "o"); break;
case FMT_UNSIGNED: (void)strcat(lfmt, "u"); break;
case FMT_HEX: (void)strcat(lfmt, "x"); break;
}
return (snprintf(buf, blen, lfmt, data));
}