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ls: Improve POSIX compatibility for -g and -n.

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- Change -g (ignored for BSD 4.3 compatibility since BSD 4.4)
  to use POSIX semantics of implying -l but omitting the owner's
  name.

- Change -n to imply -l.

The -o option remains unchanged (POSIX defines -o as a complement to
-g that implies -l but omits group names whereas BSD defines -o to add
file flags to -l).  This compromise is the same used by both NetBSD
and OpenBSD.

PR:		70813
Reviewed by:	jhb, Pau Amma <pauamma@gundo.com>
Co-authored-by:	John Baldwin <jhb@FreeBSD.org>
Differential Revision:	https://reviews.freebsd.org/D34747
This commit is contained in:
Minsoo Choo 2023-07-18 09:49:59 -07:00 committed by John Baldwin
parent d5e2d0f140
commit 3bfbb521fe
5 changed files with 28 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
bin/ls/ls.1
View File

@ -32,7 +32,7 @@
.\" @(#)ls.1 8.7 (Berkeley) 7/29/94
.\" $FreeBSD$
.\"
.Dd October 31, 2022
.Dd July 18, 2023
.Dt LS 1
.Os
.Sh NAME
@ -301,14 +301,9 @@ and
.Fl s
options.
.It Fl g
This option has no effect.
It is only available for compatibility with
.Bx 4.3 ,
where it was used to display the group name in the long
Display the long
.Pq Fl l
format output.
This option is incompatible with
.St -p1003.1-2008 .
format output without the file owner's name or number.
.It Fl h
When used with the
.Fl l

10
bin/ls/ls.c
View File

@ -144,6 +144,7 @@ static int f_singlecol; /* use single column output */
static int f_sizesort;
int f_slash; /* similar to f_type, but only for dirs */
int f_sortacross; /* sort across rows, not down columns */
int f_sowner; /* disable showing owner's name */
int f_statustime; /* use time of last mode change */
static int f_stream; /* stream the output, separate with commas */
int f_thousands; /* show file sizes with thousands separators */
@ -402,7 +403,11 @@ main(int argc, char *argv[])
f_listdir = 1;
f_recursive = 0;
break;
case 'g': /* Compatibility with 4.3BSD. */
case 'g':
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
f_sowner = 1;
break;
case 'h':
f_humanval = 1;
@ -421,6 +426,9 @@ main(int argc, char *argv[])
break;
case 'n':
f_numericonly = 1;
f_longform = 1;
f_singlecol = 0;
f_stream = 0;
break;
case 'o':
f_flags = 1;

1
bin/ls/ls.h
View File

@ -56,6 +56,7 @@ extern int f_sectime; /* print the real time for all files */
extern int f_size; /* list size in short listing */
extern int f_slash; /* append a '/' if the file is a directory */
extern int f_sortacross; /* sort across rows, not down columns */
extern int f_sowner; /* disable showing the owner's name */
extern int f_statustime; /* use time of last mode change */
extern int f_thousands; /* show file sizes with thousands separators */
extern char *f_timeformat; /* user-specified time format */

8
bin/ls/print.c
View File

@ -234,9 +234,11 @@ printlong(const DISPLAY *dp)
strmode(sp->st_mode, buf);
aclmode(buf, p);
np = p->fts_pointer;
(void)printf("%s %*ju %-*s %-*s ", buf, dp->s_nlink,
(uintmax_t)sp->st_nlink, dp->s_user, np->user, dp->s_group,
np->group);
(void)printf("%s %*ju ", buf, dp->s_nlink,
(uintmax_t)sp->st_nlink);
if (!f_sowner)
(void)printf("%-*s ", dp->s_user, np->user);
(void)printf("%-*s ", dp->s_group, np->group);
if (f_flags)
(void)printf("%-*s ", dp->s_flags, np->flags);
if (f_label)

19
bin/ls/tests/ls_tests.sh
View File

@ -525,18 +525,19 @@ f_flag_body()
atf_test_case g_flag
g_flag_head()
{
atf_set "descr" "Verify that -g does nothing (compatibility flag)"
atf_set "descr" "Verify that -g implies -l but omits the owner name field"
}
g_flag_body()
{
create_test_inputs2
for file in $files; do
atf_check -e empty -o match:"$(ls -a $file)" -s exit:0 \
ls -ag $file
atf_check -e empty -o match:"$(ls -la $file)" -s exit:0 \
ls -alg $file
done
atf_check -e empty -o empty -s exit:0 touch a.file
mtime_in_secs=$(stat -f "%m" -t "%s" a.file)
mtime=$(date -j -f "%s" $mtime_in_secs +"%b[[:space:]]+%e[[:space:]]+%H:%M")
expected_output=$(stat -f "%Sp[[:space:]]+%l[[:space:]]+%Sg[[:space:]]+%z[[:space:]]+$mtime[[:space:]]+a\\.file" a.file)
atf_check -e empty -o match:"$expected_output" -s exit:0 ls -g a.file
}
atf_test_case h_flag
@ -689,7 +690,7 @@ n_flag_body()
atf_check -e empty \
-o match:'\-rw\-r\-\-r\-\-[[:space:]]+1[[:space:]]+'"$nobody_uid[[:space:]]+$daemon_gid"'[[:space:]]+.+a\.file' \
ls -ln a.file
ls -n a.file
}