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When opening a ttys files, try path.<machine> first. This helps

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machine archs which have multiple ttys files (arm, mips, powerpc, m68k, sh3)
This commit is contained in:
matt 2013-06-30 07:50:54 +00:00
parent f304ff8667
commit 138bf8b9ef
1 changed files with 22 additions and 3 deletions
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25
lib/libc/gen/getttyent.c
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@ -1,4 +1,4 @@
/* $NetBSD: getttyent.c,v 1.24 2011/10/15 23:00:01 christos Exp $ */
/* $NetBSD: getttyent.c,v 1.25 2013/06/30 07:50:54 matt Exp $ */
/*
* Copyright (c) 1989, 1993
@ -34,7 +34,7 @@
#if 0
static char sccsid[] = "@(#)getttyent.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: getttyent.c,v 1.24 2011/10/15 23:00:01 christos Exp $");
__RCSID("$NetBSD: getttyent.c,v 1.25 2013/06/30 07:50:54 matt Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
@ -49,6 +49,9 @@ __RCSID("$NetBSD: getttyent.c,v 1.24 2011/10/15 23:00:01 christos Exp $");
#include <err.h>
#include <stdlib.h>
#include <sys/sysctl.h>
#include <sys/utsname.h>
#ifdef __weak_alias
__weak_alias(endttyent,_endttyent)
__weak_alias(getttyent,_getttyent)
@ -223,7 +226,23 @@ setttyentpath(const char *path)
if (tf) {
rewind(tf);
return 1;
} else if ((tf = fopen(path, "re")) != NULL)
}
/*
* Try <path>.$MACHINE (e.g. etc/ttys.amd64)
*/
char machine[_SYS_NMLN];
const int mib[] = { [0] = CTL_HW, [1] = HW_MACHINE, };
size_t len = sizeof(machine);
if (sysctl(mib, __arraycount(mib), machine, &len, NULL, 0) != -1) {
char npath[PATH_MAX];
(void)snprintf(npath, sizeof(npath), "%s.%s", path, machine);
if ((tf = fopen(npath, "re")) != NULL)
return 1;
}
if ((tf = fopen(path, "re")) != NULL)
return 1;
return 0;
}