lib/, libsubid/, po/, src/: get_gid(): Move function to "atoi/getnum.h"

Implement it as an inline function, and add restrict and ATTR_STRING()
and ATTR_ACCESS() as appropriate.

Reviewed-by: "Serge E. Hallyn" <serge@hallyn.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

lib/Makefile.am

@@ -33,6 +33,8 @@ libshadow_la_SOURCES = \
 	alloc.h \
 	atoi/a2i.c \
 	atoi/a2i.h \
+	atoi/getnum.c \
+	atoi/getnum.h \
 	atoi/str2i.c \
 	atoi/str2i.h \
 	atoi/strtoi.c \
@@ -71,7 +73,6 @@ libshadow_la_SOURCES = \
 	find_new_sub_gids.c \
 	find_new_sub_uids.c \
 	fputsx.c \
-	get_gid.c \
 	get_pid.c \
 	get_uid.c \
 	getdate.h \

lib/atoi/getnum.c

@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include "atoi/getnum.h"
+
+
+extern inline int get_gid(const char *restrict gidstr, gid_t *restrict gid);

lib/atoi/getnum.h

@@ -3,19 +3,29 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 
+#ifndef SHADOW_INCLUDE_LIB_ATOI_GETNUM_H_
+#define SHADOW_INCLUDE_LIB_ATOI_GETNUM_H_
+
+
 #include <config.h>
 
-#ident "$Id$"
-
+#include <stddef.h>
 #include <sys/types.h>
 
-#include "prototypes.h"
 #include "atoi/a2i.h"
+#include "attr.h"
 #include "typetraits.h"
 
 
-int
-get_gid(const char *gidstr, gid_t *gid)
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
+inline int get_gid(const char *restrict gidstr, gid_t *restrict gid);
+
+
+inline int
+get_gid(const char *restrict gidstr, gid_t *restrict gid)
 {
 	return a2i(gid_t, gid, gidstr, NULL, 10, type_min(gid_t), type_max(gid_t));
 }
+
+
+#endif  // include guard

lib/prototypes.h

@@ -142,10 +142,6 @@ extern int find_new_sub_gids (gid_t *range_start, unsigned long *range_count);
 extern int find_new_sub_uids (uid_t *range_start, unsigned long *range_count);
 #endif				/* ENABLE_SUBIDS */
 
-
-/* get_gid.c */
-extern int get_gid (const char *gidstr, gid_t *gid);
-
 /* getgr_nam_gid.c */
 extern /*@only@*//*@null@*/struct group *getgr_nam_gid (/*@null@*/const char *grname);
 

lib/sgetgrent.c

@@ -17,9 +17,11 @@
 #include <string.h>
 
 #include "alloc.h"
+#include "atoi/getnum.h"
 #include "defines.h"
 #include "prototypes.h"
 
+
 #define	NFIELDS	4
 
 /*

lib/sgetpwent.c

@@ -16,10 +16,12 @@
 #include <pwd.h>
 #include <string.h>
 
+#include "atoi/getnum.h"
 #include "defines.h"
 #include "prototypes.h"
 #include "shadowlog_internal.h"
 
+
 #define	NFIELDS	7
 
 /*