[PATCH 12/33] agetty: check writing to a file was successful

Sami Kerola
2013-04-13T19:55:43Z

term-utils/agetty.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index a23cf6d..dd52f70 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]);
--
1.8.2.1