getconf: Add POSIX2_LINE_MAX and INT_MAX variablesv0.4

1 files changed, 24 insertions, 8 deletions

diff --git a/getconf/getconf.c b/getconf/getconf.c
index 9dba3ec..8ede268 100644
--- a/getconf/getconf.c
+++ b/getconf/getconf.c
@@ -24,6 +24,9 @@ typedef struct variable_mapping
 /* For variables that are valid, but undefined in this implementation */
 #define _UNDEFINED_VARIABLE_ 0x7FEEDFEE
 
+#define SHIMMY_POSIX2_LINE_MAX 0x7FEEDFED
+#define SHIMMY_INT_MAX 0x7FEEDFEC
+
 const var_map_t sysconf_vars[] = {
 	/* max */
 	{ "AIO_LISTIO_MAX", _SC_AIO_LISTIO_MAX },
@@ -315,10 +318,13 @@ const var_map_t sysconf_vars[] = {
 	{ "_XOPEN_UUCP", _UNDEFINED_VARIABLE_ },
 #endif
 #if defined(_SC_XOPEN_VERSION)
-	{ "_XOPEN_VERSION", _SC_XOPEN_VERSION }
+	{ "_XOPEN_VERSION", _SC_XOPEN_VERSION },
 #else /* NetBSD */
-	{ "_XOPEN_VERSION", _UNDEFINED_VARIABLE_ }
+	{ "_XOPEN_VERSION", _UNDEFINED_VARIABLE_ },
 #endif
+
+	{ "POSIX2_LINE_MAX", SHIMMY_POSIX2_LINE_MAX },
+	{ "INT_MAX", SHIMMY_INT_MAX }
 };
 
 
@@ -410,11 +416,20 @@ int do_system_var(char *environment, char *system_var)
 			return 0;
 		}
 
-		errno = 0;
-
-		val = sysconf(sysconf_vars[var].value);
-		if(errno != 0)
+		switch(sysconf_vars[var].value)
 		{
+		case SHIMMY_POSIX2_LINE_MAX:
+			val = LINE_MAX;
+			break;
+		case SHIMMY_INT_MAX:
+			val = INT_MAX;
+			break;
+		default:
+			errno = 0;
+
+			val = sysconf(sysconf_vars[var].value);
+			if(errno != 0)
+			{
 			/* We know that this is a valid symbol, so don't break
 			 * expectations (see _POSIX_TRACE_LOG in FreeBSD).
 			 * 
@@ -425,8 +440,9 @@ int do_system_var(char *environment, char *system_var)
 			 * a result in getconf.  So, I feel this is the
 			 * strictest way to conform.
 			 */
-			printf("undefined\n");
-			return 0;
+				printf("undefined\n");
+				return 0;
+			}
 		}
 
 		printf("%ld\n", val);