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[BZ #652]

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2005-01-11  Thorsten Kukuk  <kukuk@suse.de>
	[BZ #652]
	* posix/getconf.c: Add new option -a to print the names of
	the current system configuration variables to stdout.
	Based on patch from Josh Aas <josha@sgi.com>.
This commit is contained in:
Ulrich Drepper 2005-09-26 23:02:01 +00:00
parent 419bcf40d7
commit 9a5933834b
2 changed files with 63 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2005-01-11 Thorsten Kukuk <kukuk@suse.de>
[BZ #652]
* posix/getconf.c: Add new option -a to print the names of
the current system configuration variables to stdout.
Based on patch from Josh Aas <josha@sgi.com>.
2005-09-26 Ulrich Drepper <drepper@redhat.com>
[BZ #644]

57
posix/getconf.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1991, 92, 1995-2003, 2004, 2005 Free Software Foundation, Inc.
/* Copyright (C) 1991, 92, 1995-2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -941,9 +941,54 @@ usage (void)
fprintf (stderr,
_("Usage: %s [-v specification] variable_name [pathname]\n"),
__progname);
fprintf (stderr,
_(" %s -a [pathname]\n"), __progname);
exit (2);
}
static void
print_all (const char *path)
{
register const struct conf *c;
size_t clen;
long int value;
char *cvalue;
for (c = vars; c->name != NULL; ++c) {
printf("%-35s", c->name);
switch (c->call) {
case PATHCONF:
value = pathconf (path, c->call_name);
if (value != -1) {
printf("%ld", value);
}
printf("\n");
break;
case SYSCONF:
value = sysconf (c->call_name);
if (value == -1l) {
if (c->call_name == _SC_UINT_MAX
|| c->call_name == _SC_ULONG_MAX)
printf ("%lu", value);
}
else {
printf ("%ld", value);
}
printf ("\n");
break;
case CONFSTR:
clen = confstr (c->call_name, (char *) NULL, 0);
cvalue = (char *) malloc (clen);
if (cvalue == NULL)
error (3, 0, _("memory exhausted"));
if (confstr (c->call_name, cvalue, clen) != clen)
error (3, errno, "confstr");
printf ("%.*s\n", (int) clen, cvalue);
break;
}
}
exit (0);
}
int
main (int argc, char *argv[])
{
@ -1050,6 +1095,16 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
}
}
if (argc > 1 && strcmp (argv[1], "-a") == 0)
{
if (argc == 2)
print_all ("/");
else if (argc == 3)
print_all (argv[2]);
else
usage ();
}
if (argc < 2 || argc > 3)
usage ();