From: Sami Kerola <kerolasa@iki.fi>
Date: Sat, 13 Apr 2013 19:54:40 +0000 (+0100)
Subject: agetty: check writing to a file was successful
X-Git-Tag: v2.24-rc1~599
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1aba8336c094e26d189ce792606ecbac246209ce;p=thirdparty%2Futil-linux.git

agetty: check writing to a file was successful

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---

diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index a23cf6dc27..dd52f700ff 100644
--- a/term-utils/agetty.c
+++ b/term-utils/agetty.c
@@ -235,6 +235,9 @@ static void login_options_to_argv(char *argv[], int *argc, char *str, char *user
 static char *fakehost;
 
 #ifdef DEBUGGING
+#ifndef
+# define DEBUG_OUTPUT "/dev/ttyp0"
+#endif
 #define debug(s) do { fprintf(dbf,s); fflush(dbf); } while (0)
 FILE *dbf;
 #else
@@ -270,7 +273,7 @@ int main(int argc, char **argv)
 	sigaction(SIGINT, &sa, &sa_int);
 
 #ifdef DEBUGGING
-	dbf = fopen("/dev/ttyp0", "w");
+	dbf = fopen(DEBUG_OUTPUT, "w");
 	for (int i = 1; i < argc; i++)
 		debug(argv[i]);
 #endif				/* DEBUGGING */
@@ -420,6 +423,12 @@ int main(int argc, char **argv)
 				options.tty);
 	}
 
+#ifdef DEBUGGING
+	fprintf(dbf, "read %c\n", ch);
+	if (close_stream(dbf) != 0)
+		log_err("write failed: %s", DEBUG_OUTPUT);
+#endif
+
 	/* Let the login program take care of password validation. */
 	execv(options.login, login_argv);
 	log_err(_("%s: can't exec %s: %m"), options.tty, login_argv[0]);