f93cf255d4
Closes #238 Update all files to list SPDX license shortname. Most files are BSD 3 clause license. The exceptions are: serge@sl ~/src/shadow$ git grep SPDX-License | grep -v BSD-3-Clause contrib/atudel:# SPDX-License-Identifier: BSD-4-Clause lib/tcbfuncs.c: * SPDX-License-Identifier: 0BSD libmisc/salt.c: * SPDX-License-Identifier: Unlicense src/login_nopam.c: * SPDX-License-Identifier: Unlicense src/nologin.c: * SPDX-License-Identifier: BSD-2-Clause src/vipw.c: * SPDX-License-Identifier: GPL-2.0-or-later Signed-off-by: Serge Hallyn <serge@hallyn.com>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2012 Eric Biederman
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#ifdef ENABLE_SUBIDS
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
|
|
#include "prototypes.h"
|
|
#include "subordinateio.h"
|
|
#include "getdef.h"
|
|
|
|
/*
|
|
* find_new_sub_gids - Find a new unused range of GIDs.
|
|
*
|
|
* If successful, find_new_sub_gids provides a range of unused
|
|
* user IDs in the [SUB_GID_MIN:SUB_GID_MAX] range.
|
|
*
|
|
* Return 0 on success, -1 if no unused GIDs are available.
|
|
*/
|
|
int find_new_sub_gids (gid_t *range_start, unsigned long *range_count)
|
|
{
|
|
unsigned long min, max;
|
|
unsigned long count;
|
|
gid_t start;
|
|
|
|
assert (range_start != NULL);
|
|
assert (range_count != NULL);
|
|
|
|
min = getdef_ulong ("SUB_GID_MIN", 100000UL);
|
|
max = getdef_ulong ("SUB_GID_MAX", 600100000UL);
|
|
count = getdef_ulong ("SUB_GID_COUNT", 65536);
|
|
|
|
if (min > max || count >= max || (min + count - 1) > max) {
|
|
(void) fprintf (shadow_logfd,
|
|
_("%s: Invalid configuration: SUB_GID_MIN (%lu),"
|
|
" SUB_GID_MAX (%lu), SUB_GID_COUNT (%lu)\n"),
|
|
Prog, min, max, count);
|
|
return -1;
|
|
}
|
|
|
|
start = sub_gid_find_free_range(min, max, count);
|
|
if (start == (gid_t)-1) {
|
|
fprintf (shadow_logfd,
|
|
_("%s: Can't get unique subordinate GID range\n"),
|
|
Prog);
|
|
SYSLOG ((LOG_WARN, "no more available subordinate GIDs on the system"));
|
|
return -1;
|
|
}
|
|
*range_start = start;
|
|
*range_count = count;
|
|
return 0;
|
|
}
|
|
#else /* !ENABLE_SUBIDS */
|
|
extern int errno; /* warning: ANSI C forbids an empty source file */
|
|
#endif /* !ENABLE_SUBIDS */
|
|
|