libpwdgrp: use FAST_FUNC to make "matching ABI" optimization more likely to succeed
See bb_internal_get*nam_r size reduction:
function old new delta
bb_internal_getpwent_r 167 176 +9
getXXnam_r 204 206 +2
sulogin_main 326 325 -1
su_main 471 470 -1
read_line_input 3832 3831 -1
print_stat 865 864 -1
prepare_socket_fd 283 282 -1
load_crontab 777 776 -1
fork_job 456 455 -1
do_shm 884 883 -1
do_sem 637 636 -1
do_msg 783 782 -1
complete_username 124 123 -1
bb_internal_getgrouplist 71 70 -1
xgetpwuid 27 25 -2
xgetpwnam 27 25 -2
xgetgrnam 27 25 -2
xgetgrgid 27 25 -2
uid2uname 18 16 -2
login_main 980 978 -2
gid2group 18 16 -2
get_shell_name 54 52 -2
change_identity 50 48 -2
bb_internal_initgroups 50 48 -2
argstr 1261 1259 -2
print_perms 177 174 -3
inetd_main 2077 2074 -3
run_applet_no_and_exit 446 442 -4
fileaction_setowngrp 89 85 -4
deluser_main 312 308 -4
bb_internal_getpwuid 19 15 -4
bb_internal_getpwnam 11 7 -4
bb_internal_getgrnam 14 10 -4
bb_internal_getgrgid 19 15 -4
adduser_main 865 861 -4
passwd_main 989 984 -5
get_passwd 97 92 -5
data_extract_all 887 882 -5
check_user_passwd 490 485 -5
get_groups 81 75 -6
ftpd_main 2178 2171 -7
bb_internal_getspnam_r 42 18 -24
bb_internal_getpwnam_r 39 15 -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/41 up/down: 11/-153) Total: -142 bytes
text data bss dec hex filename
923167 928 17676 941771 e5ecb busybox_old
923023 928 17676 941627 e5e3b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/include/grp_.h b/include/grp_.h
index f7b8d83..db13ce3 100644
--- a/include/grp_.h
+++ b/include/grp_.h
@@ -36,31 +36,30 @@
#define getgrouplist bb_internal_getgrouplist
#define initgroups bb_internal_initgroups
-
/* All function names below should be remapped by #defines above
* in order to not collide with libc names. */
/* Close the group-file stream. */
-extern void endgrent(void);
+void FAST_FUNC endgrent(void);
/* Search for an entry with a matching group ID. */
-extern struct group *getgrgid(gid_t __gid);
+struct group* FAST_FUNC getgrgid(gid_t __gid);
/* Search for an entry with a matching group name. */
-extern struct group *getgrnam(const char *__name);
+struct group* FAST_FUNC getgrnam(const char *__name);
/* Reentrant versions of some of the functions above. */
/* Store at most *NGROUPS members of the group set for USER into
*GROUPS. Also include GROUP. The actual number of groups found is
returned in *NGROUPS. Return -1 if the if *NGROUPS is too small. */
-extern int getgrouplist(const char *__user, gid_t __group,
+int FAST_FUNC getgrouplist(const char *__user, gid_t __group,
gid_t *__groups, int *__ngroups);
/* Initialize the group set for the current user
by reading the group database and using all groups
of which USER is a member. Also include GROUP. */
-extern int initgroups(const char *__user, gid_t __group);
+int FAST_FUNC initgroups(const char *__user, gid_t __group);
POP_SAVED_FUNCTION_VISIBILITY
diff --git a/include/pwd_.h b/include/pwd_.h
index d086f86..32b5b36 100644
--- a/include/pwd_.h
+++ b/include/pwd_.h
@@ -43,21 +43,21 @@
* in order to not collide with libc names. */
/* Rewind the password-file stream. */
-extern void setpwent(void);
+void FAST_FUNC setpwent(void);
/* Close the password-file stream. */
-extern void endpwent(void);
+void FAST_FUNC endpwent(void);
#ifdef UNUSED_SINCE_WE_AVOID_STATIC_BUFS
/* Read an entry from the password-file stream, opening it if necessary. */
-extern struct passwd *getpwent(void);
+struct passwd* FAST_FUNC getpwent(void);
#endif
/* Search for an entry with a matching user ID. */
-extern struct passwd *getpwuid(uid_t __uid);
+struct passwd* FAST_FUNC getpwuid(uid_t __uid);
/* Search for an entry with a matching username. */
-extern struct passwd *getpwnam(const char *__name);
+struct passwd* FAST_FUNC getpwnam(const char *__name);
/* Reentrant versions of some of the functions above.
@@ -67,11 +67,11 @@
other reentrant functions so the chances are good this is what the
POSIX people would choose. */
-extern int getpwent_r(struct passwd *__restrict __resultbuf,
+int FAST_FUNC getpwent_r(struct passwd *__restrict __resultbuf,
char *__restrict __buffer, size_t __buflen,
struct passwd **__restrict __result);
-extern int getpwnam_r(const char *__restrict __name,
+int FAST_FUNC getpwnam_r(const char *__restrict __name,
struct passwd *__restrict __resultbuf,
char *__restrict __buffer, size_t __buflen,
struct passwd **__restrict __result);
diff --git a/include/shadow_.h b/include/shadow_.h
index 7babe4f..8e2581e 100644
--- a/include/shadow_.h
+++ b/include/shadow_.h
@@ -57,48 +57,48 @@
#ifdef UNUSED_FOR_NOW
/* Open database for reading */
-extern void setspent(void);
+void FAST_FUNC setspent(void);
/* Close database */
-extern void endspent(void);
+void FAST_FUNC endspent(void);
/* Get next entry from database, perhaps after opening the file */
-extern struct spwd *getspent(void);
+struct spwd* FAST_FUNC getspent(void);
/* Get shadow entry matching NAME */
-extern struct spwd *getspnam(const char *__name);
+struct spwd* FAST_FUNC getspnam(const char *__name);
/* Read shadow entry from STRING */
-extern struct spwd *sgetspent(const char *__string);
+struct spwd* FAST_FUNC sgetspent(const char *__string);
/* Read next shadow entry from STREAM */
-extern struct spwd *fgetspent(FILE *__stream);
+struct spwd* FAST_FUNC fgetspent(FILE *__stream);
/* Write line containing shadow password entry to stream */
-extern int putspent(const struct spwd *__p, FILE *__stream);
+int FAST_FUNC putspent(const struct spwd *__p, FILE *__stream);
/* Reentrant versions of some of the functions above */
-extern int getspent_r(struct spwd *__result_buf, char *__buffer,
+int FAST_FUNC getspent_r(struct spwd *__result_buf, char *__buffer,
size_t __buflen, struct spwd **__result);
#endif
-extern int getspnam_r(const char *__name, struct spwd *__result_buf,
+int FAST_FUNC getspnam_r(const char *__name, struct spwd *__result_buf,
char *__buffer, size_t __buflen,
struct spwd **__result);
#ifdef UNUSED_FOR_NOW
-extern int sgetspent_r(const char *__string, struct spwd *__result_buf,
+int FAST_FUNC sgetspent_r(const char *__string, struct spwd *__result_buf,
char *__buffer, size_t __buflen,
struct spwd **__result);
-extern int fgetspent_r(FILE *__stream, struct spwd *__result_buf,
+int FAST_FUNC fgetspent_r(FILE *__stream, struct spwd *__result_buf,
char *__buffer, size_t __buflen,
struct spwd **__result);
/* Protect password file against multi writers */
-extern int lckpwdf(void);
+int FAST_FUNC lckpwdf(void);
/* Unlock password file */
-extern int ulckpwdf(void);
+int FAST_FUNC ulckpwdf(void);
#endif
POP_SAVED_FUNCTION_VISIBILITY