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* manual/users.texi (Setting Groups): Correct initgroups
	documentation.  Add documentation for getgrouplist.

2001-06-28  H.J. Lu  <hjl@gnu.org>

	* locale/findlocale.c (locale_file_list): Renamed to ...
	(_nl_locale_file_list): This. Make it extern.
	(free_mem): Move to ...
	* locale/setlocale.c (free_mem): Here.

2001-06-28  Mark Kettenis  <kettenis@gnu.org>

2001-06-20  Isamu Hasegawa  <isamu@yamato.ibm.com>
2001-06-26  Isamu Hasegawa  <isamu@yamato.ibm.com>
	* posix/regex.c (count_mbs_length): Use binary search for optimization.
This commit is contained in:
Ulrich Drepper 2001-06-29 00:17:44 +00:00
parent 5746ef6f2a
commit 90e5b29e14
3 changed files with 85 additions and 14 deletions
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19
ChangeLog
View File

@ -1,3 +1,15 @@
2001-06-28 Mark Kettenis <kettenis@gnu.org>
* manual/users.texi (Setting Groups): Correct initgroups
documentation. Add documentation for getgrouplist.
2001-06-28 H.J. Lu <hjl@gnu.org>
* locale/findlocale.c (locale_file_list): Renamed to ...
(_nl_locale_file_list): This. Make it extern.
(free_mem): Move to ...
* locale/setlocale.c (free_mem): Here.
2001-06-28 Mark Kettenis <kettenis@gnu.org>
* sysdeps/mach/hurd/read.c: Include <hurd/fd.h>.
@ -18,17 +30,16 @@
* posix/Makefile: Add rules to build and run tst-regex.
2001-06-20 Isamu Hasegawa <isamu@yamato.ibm.com>
2001-06-20 Isamu Hasegawa <isamu@yamato.ibm.com>
* posix/regex.c (FREE_WCS_BUFFERS): New macro to free buffers.
(re_search_2): invoke convert_mbs_to_wcs and FREE_WCS_BUFFERS.
(wcs_re_match_2_internal): Check whether the wcs buffers need
seting up or not, and skip seting up routin if not needed.
2001-06-26 Isamu Hasegawa <isamu@yamato.ibm.com>
2001-06-26 Isamu Hasegawa <isamu@yamato.ibm.com>
* posix/regex.c (count_mbs_length): Use binary search for
optimization.
* posix/regex.c (count_mbs_length): Use binary search for optimization.
2001-06-27 Ulrich Drepper <drepper@redhat.com>

28
locale/setlocale.c
View File

@ -430,6 +430,7 @@ setlocale (int category, const char *locale)
}
}
extern struct loaded_l10nfile *_nl_locale_file_list[];
static void __attribute__ ((unused))
free_mem (void)
@ -440,17 +441,30 @@ free_mem (void)
if (category != LC_ALL)
{
struct locale_data *here = *_nl_current[category];
struct loaded_l10nfile *runp = _nl_locale_file_list[category];
/* If this category is already "C" don't do anything. */
if (here == _nl_C[category])
continue;
if (here != _nl_C[category])
{
/* We have to be prepared that sometime later me still
might need the locale information. */
setdata (category, _nl_C[category]);
setname (category, _nl_C_name);
/* We have to be prepared that sometime later me still might
need the locale information. */
setdata (category, _nl_C[category]);
setname (category, _nl_C_name);
_nl_unload_locale (here);
}
_nl_unload_locale (here);
while (runp != NULL)
{
struct loaded_l10nfile *curr = runp;
struct locale_data *data = (struct locale_data *) runp->data;
if (data != NULL && data != here && data != _nl_C[category])
_nl_unload_locale (data);
runp = runp->next;
free ((char *) curr->filename);
free (curr);
}
}
setname (LC_ALL, _nl_C_name);

52
manual/users.texi
View File

@ -454,10 +454,10 @@ The calling process is not privileged.
@comment grp.h
@comment BSD
@deftypefun int initgroups (const char *@var{user}, gid_t @var{gid})
@deftypefun int initgroups (const char *@var{user}, gid_t @var{group})
The @code{initgroups} function sets the process's supplementary group
IDs to be the normal default for the user name @var{user}. If @var{gid}
is not -1, it includes that group also.
IDs to be the normal default for the user name @var{user}. The group
@var{group} is automatically included.
This function works by scanning the group database for all the groups
@var{user} belongs to. It then calls @code{setgroups} with the list it
@ -467,6 +467,52 @@ The return values and error conditions are the same as for
@code{setgroups}.
@end deftypefun
If you are interested in the groups a particular user belongs to, but do
not want to change the process's supplementary group IDs, you can use
@code{getgrouplist}. To use @code{getgrouplist}, your programs should
include the header file @file{grp.h}.
@pindex grp.h
@comment grp.h
@comment BSD
@deftypefun int getgrouplist (const char *@var{user}, gid_t @var{group}, gid_t *@var{groups}, int *@var{ngroups})
The @code{getgrouplist} function scans the group database for all the
groups @var{user} belongs to. Up to *@var{ngroups} group IDs
corresponding to these groups are stored in the array @var{groups}; the
return value from the function is the number of group IDs actually
stored. If *@var{ngroups} is smaller than the total number of groups
found, then @code{getgrouplist} returns a value of @code{-1} and stores
the actual number of groups in *@var{ngroups}. The group @var{group} is
automatically included in the list of groups returned by
@code{getgrouplist}.
Here's how to use @code{getgrouplist} to read all supplementary groups
for @var{user}:
@smallexample
@group
gid_t *
supplementary_groups (char *user)
@{
int ngroups = 16;
gid_t *groups
= (gid_t *) xmalloc (ngroups * sizeof (gid_t));
struct passwd *pw = getpwnam (user);
if (pw == NULL)
return NULL;
if (getgrouplist (pw->pw_name, pw->pw_gid, groups, &ngroups) < 0)
@{
groups = xrealloc (ngroups * sizeof (gid_t));
getgrouplist (pw->pw_name, pw->pw_gid, groups, &ngroups);
@}
return groups;
@}
@end group
@end smallexample
@end deftypefun
@node Enable/Disable Setuid
@section Enabling and Disabling Setuid Access