[src/trunk]: src Implement sysconf(3) _SC_GETGR_R_SIZE_MAX and _SC_GETPW_R_SI...

[lukem <lukem%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4085924462bf
branches:  trunk
changeset: 571044:4085924462bf
user:      lukem <lukem%NetBSD.org@localhost>
date:      Wed Nov 10 04:02:52 2004 +0000

description:
Implement sysconf(3) _SC_GETGR_R_SIZE_MAX and _SC_GETPW_R_SIZE_MAX for
the 1003.1-2001 Thread Safe Functions (TSF) getgrnam_r(3) and getpwnam_r(3).

These are not implemented in sysctl(3) "user.*", since that adds a lot
of complexity in the implementation for no real benefit.

diffstat:

 include/limits.h          |   6 +++++-
 lib/libc/gen/sysconf.c    |  11 +++++++++--
 sys/sys/unistd.h          |   8 +++++---
 usr.bin/getconf/getconf.c |   9 +++++++--
 4 files changed, 26 insertions(+), 8 deletions(-)

diffs (125 lines):

diff -r e092a263c8a9 -r 4085924462bf include/limits.h
--- a/include/limits.h  Wed Nov 10 03:57:23 2004 +0000
+++ b/include/limits.h  Wed Nov 10 04:02:52 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: limits.h,v 1.22 2003/08/07 09:44:10 agc Exp $  */
+/*     $NetBSD: limits.h,v 1.23 2004/11/10 04:02:52 lukem Exp $        */
 
 /*
  * Copyright (c) 1988, 1993
@@ -90,6 +90,10 @@
 #define NL_SETMAX              255
 #define NL_TEXTMAX             2048
 
+       /* IEEE Std 1003.1-2001 TSF */
+#define        _GETGR_R_SIZE_MAX       1024
+#define        _GETPW_R_SIZE_MAX       1024
+
 /* Always ensure that this is consistent with <stdio.h> */
 #ifndef TMP_MAX
 #define TMP_MAX                        308915776       /* Legacy */
diff -r e092a263c8a9 -r 4085924462bf lib/libc/gen/sysconf.c
--- a/lib/libc/gen/sysconf.c    Wed Nov 10 03:57:23 2004 +0000
+++ b/lib/libc/gen/sysconf.c    Wed Nov 10 04:02:52 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysconf.c,v 1.19 2003/08/07 16:42:57 agc Exp $ */
+/*     $NetBSD: sysconf.c,v 1.20 2004/11/10 04:02:52 lukem Exp $       */
 
 /*-
  * Copyright (c) 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)sysconf.c  8.2 (Berkeley) 3/20/94";
 #else
-__RCSID("$NetBSD: sysconf.c,v 1.19 2003/08/07 16:42:57 agc Exp $");
+__RCSID("$NetBSD: sysconf.c,v 1.20 2004/11/10 04:02:52 lukem Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -80,6 +80,7 @@
        len = sizeof(value);
 
        switch (name) {
+
 /* 1003.1 */
        case _SC_ARG_MAX:
                mib[0] = CTL_KERN;
@@ -289,6 +290,12 @@
                mib[1] = USER_ATEXIT_MAX;
                break;
 
+/* 1003.1-2001, TSF */
+       case _SC_GETGR_R_SIZE_MAX:
+               return _GETGR_R_SIZE_MAX;
+       case _SC_GETPW_R_SIZE_MAX:
+               return _GETPW_R_SIZE_MAX;
+
 yesno:         if (sysctl(mib, 2, &value, &len, NULL, 0) == -1)
                        return (-1);
                if (value == 0)
diff -r e092a263c8a9 -r 4085924462bf sys/sys/unistd.h
--- a/sys/sys/unistd.h  Wed Nov 10 03:57:23 2004 +0000
+++ b/sys/sys/unistd.h  Wed Nov 10 04:02:52 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: unistd.h,v 1.30 2003/11/15 01:19:38 thorpej Exp $      */
+/*     $NetBSD: unistd.h,v 1.31 2004/11/10 04:02:52 lukem Exp $        */
 
 /*
  * Copyright (c) 1989, 1993
@@ -125,7 +125,7 @@
 #define        FFILESYNC       0x0020  /* sync data and metadata */
 #endif
 
-/* configurable pathname variables */
+/* configurable pathname variables; use as argument to pathconf(3) */
 #define        _PC_LINK_MAX             1
 #define        _PC_MAX_CANON            2
 #define        _PC_MAX_INPUT            3
@@ -138,7 +138,7 @@
 #define        _PC_SYNC_IO             10
 #define        _PC_FILESIZEBITS        11
 
-/* configurable system variables */
+/* configurable system variables; use as argument to sysconf(3) */
 /*
  * XXX The value of _SC_CLK_TCK is embedded in <time.h>.
  * XXX The value of _SC_PAGESIZE is embedded in <sys/shm.h>.
@@ -190,6 +190,8 @@
 #define        _SC_TIMERS              44
 #define        _SC_SPIN_LOCKS          45
 #define        _SC_READER_WRITER_LOCKS 46
+#define        _SC_GETGR_R_SIZE_MAX    47
+#define        _SC_GETPW_R_SIZE_MAX    48
 
 /* configurable system strings */
 #define        _CS_PATH                 1
diff -r e092a263c8a9 -r 4085924462bf usr.bin/getconf/getconf.c
--- a/usr.bin/getconf/getconf.c Wed Nov 10 03:57:23 2004 +0000
+++ b/usr.bin/getconf/getconf.c Wed Nov 10 04:02:52 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: getconf.c,v 1.21 2004/11/10 00:29:07 lukem Exp $       */
+/*     $NetBSD: getconf.c,v 1.22 2004/11/10 04:02:52 lukem Exp $       */
 
 /*-
  * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: getconf.c,v 1.21 2004/11/10 00:29:07 lukem Exp $");
+__RCSID("$NetBSD: getconf.c,v 1.22 2004/11/10 04:02:52 lukem Exp $");
 #endif /* not lint */
 
 #include <err.h>
@@ -165,6 +165,11 @@
 
   /* POSIX.1-2001 XSI Option Group Configurable System Variables */
   { "ATEXIT_MAX",              SYSCONF,        _SC_ATEXIT_MAX          },
+
+  /* POSIX.1-2001 TSF Configurable System Variables */
+  { "GETGR_R_SIZE_MAX",                SYSCONF,        _SC_GETGR_R_SIZE_MAX    },
+  { "GETPW_R_SIZE_MAX",                SYSCONF,        _SC_GETPW_R_SIZE_MAX    },
+
   { NULL }
 };