Commit a patch from Erik Gustavsson <cyrano@algonet.se>, to allow

environment variables set from the kernel command line to be inherited
bu application programs.  Slightly changed to special case handling of
TERM, so that it has sane defaults when on a serial console.
 -Erik

1 files changed, 15 insertions, 4 deletions

diff --git a/init/init.c b/init/init.c
index 1332a10..4c05c38 100644
--- a/init/init.c
+++ b/init/init.c
@@ -134,6 +134,7 @@ static _syscall2(int, bdflush, int, func, int, data);
 #define INIT_SCRIPT  "/etc/init.d/rcS"   /* Default sysinit script. */
 #endif
 
+static const int MAXENV = 16;	/* Number of env. vars */
 static const int LOG = 0x1;
 static const int CONSOLE = 0x2;
 
@@ -394,7 +395,8 @@ static void console_init()
 
 static pid_t run(char *command, char *terminal, int get_enter)
 {
-	int i, fd;
+	int i=0, j=0;
+	int fd;
 	pid_t pid;
 	char *tmpCmd;
         char *cmd[255], *cmdpath;
@@ -406,15 +408,24 @@ static pid_t run(char *command, char *terminal, int get_enter)
 #endif
 
 		"\nPlease press Enter to activate this console. ";
-	char *environment[] = {
+	char *environment[MAXENV+1] = {
 		"HOME=/",
 		"PATH=/usr/bin:/bin:/usr/sbin:/sbin",
 		"SHELL=/bin/sh",
 		termType,
-		"USER=root",
-		0
+		"USER=root"
 	};
 
+	while (environment[i]) i++;
+	while ((environ[j]) && (i < MAXENV)) {
+		if (strncmp(environ[j], "TERM=", 5))
+			environment[i++] = environ[j];
+		else {
+			snprintf(termType, sizeof(termType) - 1, environ[j]);
+		}
+		j++;
+	}
+
 	if ((pid = fork()) == 0) {
 		/* Clean up */
 		ioctl(0, TIOCNOTTY, 0);