aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--shell/cttyhack.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/shell/cttyhack.c b/shell/cttyhack.c
index 6ff867413..f9b59c263 100644
--- a/shell/cttyhack.c
+++ b/shell/cttyhack.c
@@ -123,15 +123,22 @@ int cttyhack_main(int argc UNUSED_PARAM, char **argv)
123 * TIOCGSERIAL check, which assumes that all 123 * TIOCGSERIAL check, which assumes that all
124 * serial lines follow /dev/ttySn convention - 124 * serial lines follow /dev/ttySn convention -
125 * which is not always the case. 125 * which is not always the case.
126 * Therefore, we use this methos first: 126 * Therefore, we use this method first:
127 */ 127 */
128 int s = open_read_close("/sys/class/tty/console/active", 128 int s = open_read_close("/sys/class/tty/console/active",
129 console + 5, sizeof(console) - 5); 129 console + 5, sizeof(console) - 5);
130 if (s > 0) { 130 if (s > 0) {
131 /* found active console via sysfs (Linux 2.6.38+) 131 char *last;
132 * sysfs string looks like "ttyS0\n" so zap the newline: 132 /* Found active console via sysfs (Linux 2.6.38+).
133 * It looks like "[tty0 ]ttyS0\n" so zap the newline:
133 */ 134 */
134 console[4 + s] = '\0'; 135 console[4 + s] = '\0';
136 /* If there are multiple consoles,
137 * take the last one:
138 */
139 last = strrchr(console + 5, ' ');
140 if (last)
141 overlapping_strcpy(console + 5, last + 1);
135 break; 142 break;
136 } 143 }
137 144