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Print a `+' character after the standard UNIX permission fields in long

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listings if the file has an extended ACL (more than the required 3 entries).
This is what Solaris and IRIX do, and what the withdrawn POSIX.2c standard
required.

Reviewed by:	rwatson (an earlier version of the patch)
This commit is contained in:
Tim J. Robbins 2002-11-03 07:29:08 +00:00
parent 7fa62ecb09
commit dd9aaeb0f7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106371
2 changed files with 73 additions and 2 deletions
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22
bin/ls/ls.1
View File

@ -417,6 +417,20 @@ or
.Xr sticky 8 . )
.El
.El
.Pp
The next field contains a
plus
.Pq Sq Li +
character if the file has an ACL, or a
space
.Pq Sq Li " "
if it does not.
The
.Nm
utility does not show the actual ACL;
use
.Xr getfacl 1
to do this.
.Sh EXAMPLES
The following is how to do an
.Nm
@ -618,21 +632,25 @@ The group field is now automatically included in the long listing for
files in order to be compatible with the
.St -p1003.2
specification.
KLD
.El
.Sh SEE ALSO
.Xr chflags 1 ,
.Xr chmod 1 ,
.Xr getfacl 1 ,
.Xr sort 1 ,
.Xr xterm 1 ,
.Xr termcap 5 ,
.Xr symlink 7 ,
.Xr getfmac 8 ,
.Xr sticky 8
.Sh STANDARDS
The
.Nm
utility conforms to
.St -p1003.1-2001 .
.Pp
.No The ACL support is compatible with IEEE\ Std\ 1003.2c\ ( Ns Dq "POSIX.2c" Ns )
Draft\ 17
(withdrawn).
.Sh HISTORY
An
.Nm

53
bin/ls/print.c
View File

@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/acl.h>
#include <err.h>
#include <errno.h>
@ -73,6 +74,7 @@ static void printsize(size_t, off_t);
static void endcolor(int);
static int colortype(mode_t);
#endif
static void aclmode(char *, FTSENT *, int *);
#define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT)
@ -162,10 +164,14 @@ printlong(DISPLAY *dp)
#ifdef COLORLS
int color_printed = 0;
#endif
int haveacls;
dev_t prevdev;
if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
haveacls = 1;
prevdev = (dev_t)-1;
for (p = dp->list; p; p = p->fts_link) {
if (IS_NOPRINT(p))
continue;
@ -176,6 +182,14 @@ printlong(DISPLAY *dp)
(void)printf("%*lld ",
dp->s_block, howmany(sp->st_blocks, blocksize));
strmode(sp->st_mode, buf);
/*
* Cache whether or not the filesystem supports ACL's to
* avoid expensive syscalls. Try again when we change devices.
*/
if (haveacls || sp->st_dev != prevdev) {
aclmode(buf, p, &haveacls);
prevdev = sp->st_dev;
}
np = p->fts_pointer;
(void)printf("%s %*u %-*s %-*s ", buf, dp->s_nlink,
sp->st_nlink, dp->s_user, np->user, dp->s_group,
@ -644,3 +658,42 @@ unit_adjust(double *val)
return (unit);
}
static void
aclmode(char *buf, FTSENT *p, int *haveacls)
{
char name[MAXPATHLEN + 1];
int entries, ret;
acl_t facl;
acl_entry_t ae;
/*
* Add a + after the standard rwxrwxrwx mode if the file has an
* extended ACL. strmode() reserves space at the end of the string.
*/
if (p->fts_level == FTS_ROOTLEVEL)
snprintf(name, sizeof(name), "%s", p->fts_name);
else
snprintf(name, sizeof(name), "%s/%s",
p->fts_parent->fts_accpath, p->fts_name);
if ((ret = pathconf(name, _PC_ACL_EXTENDED)) <= 0) {
if (ret < 0 && errno != EINVAL)
warn("%s", name);
else
*haveacls = 0;
return;
}
*haveacls = 1;
if ((facl = acl_get_file(name, ACL_TYPE_ACCESS)) != NULL) {
if (acl_get_entry(facl, ACL_FIRST_ENTRY, &ae) == 1) {
entries = 0;
do
entries++;
while (acl_get_entry(facl, ACL_NEXT_ENTRY, &ae) == 1);
if (entries != 3)
buf[10] = '+';
}
acl_free(facl);
} else
warn("%s", name);
}