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Allow disabling of subordinate IDs.

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* configure.in: Add configure options --enable-subordinate-ids /
	--disable-subordinate-ids. Enabled by default.
	* lib/prototypes.h: Include <config.h> before using its macros.
	* lib/commonio.h, lib/commonio.c: Define commonio_append only when
	ENABLE_SUBIDS is defined.
	* lib/prototypes.h, libmisc/find_new_sub_gids.c,
	libmisc/find_new_sub_uids.c: Likewise.
	* lib/subordinateio.h, lib/subordinateio.c: Likewise.
	* libmisc/user_busy.c: Only check if subordinate IDs are in use if
	ENABLE_SUBIDS is defined.
	* src/Makefile.am: Create newgidmap and newuidmap only if
	ENABLE_SUBIDS is defined.
	* src/newusers.c: Check for ENABLE_SUBIDS to enable support for
	subordinate IDs.
	* src/useradd.c: Likewise.
	* src/userdel.c: Likewise.
	* src/usermod.c: Likewise.
	* man/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 only if ENABLE_SUBIDS is defined.
	* man/fr/Makefile.am: Install man1/newgidmap.1, man1/newuidmap.1,
	man5/subgid.5, and man5/subuid.5 (not translated yet).
	* man/generate_mans.mak: Add xsltproc conditionals
	subids/no_subids.
	* man/login.defs.d/SUB_GID_COUNT.xml: Add dependency on subids
	condition.
	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
	* man/usermod.8.xml: Document options for subordinate IDs and
	reference subgid(5) / subuid(5) depending on the subids condition.
This commit is contained in:
Nicolas François
2013-08-11 14:54:22 +02:00
parent 1fb1486c8a
commit d611d54ed4
21 changed files with 259 additions and 41 deletions
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7
lib/subordinateio.c
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@@ -3,6 +3,9 @@
*/
#include <config.h>
#ifdef ENABLE_SUBIDS
#include "prototypes.h"
#include "defines.h"
#include <stdio.h>
@@ -507,3 +510,7 @@ gid_t sub_gid_find_free_range(gid_t min, gid_t max, unsigned long count)
start = find_free_range (&subordinate_gid_db, min, max, count);
return start == ULONG_MAX ? (gid_t) -1 : start;
}
#else /* !ENABLE_SUBIDS */
extern int errno; /* warning: ANSI C forbids an empty source file */
#endif /* !ENABLE_SUBIDS */