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-rw-r--r--arch/sparc/kernel/termios.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/sparc/kernel/termios.c b/arch/sparc/kernel/termios.c
new file mode 100644
index 000000000..ee64965c2
--- /dev/null
+++ b/arch/sparc/kernel/termios.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/termios_internal.h>
+
+/*
+ * c_cc characters in the termio structure. Oh, how I love being
+ * backwardly compatible. Notice that character 4 and 5 are
+ * interpreted differently depending on whether ICANON is set in
+ * c_lflag. If it's set, they are used as _VEOF and _VEOL, otherwise
+ * as _VMIN and V_TIME. This is for compatibility with OSF/1 (which
+ * is compatible with sysV)...
+ */
+#define _VMIN 4
+#define _VTIME 5
+
+int kernel_termios_to_user_termio(struct termio __user *termio,
+ struct ktermios *termios)
+{
+ struct termio v;
+ memset(&v, 0, sizeof(struct termio));
+ v.c_iflag = termios->c_iflag;
+ v.c_oflag = termios->c_oflag;
+ v.c_cflag = termios->c_cflag;
+ v.c_lflag = termios->c_lflag;
+ v.c_line = termios->c_line;
+ memcpy(v.c_cc, termios->c_cc, NCC);
+ if (!(v.c_lflag & ICANON)) {
+ v.c_cc[_VMIN] = termios->c_cc[VMIN];
+ v.c_cc[_VTIME] = termios->c_cc[VTIME];
+ }
+ return copy_to_user(termio, &v, sizeof(struct termio));
+}
+
+int user_termios_to_kernel_termios(struct ktermios *k,
+ struct termios2 __user *u)
+{
+ int err;
+ err = get_user(k->c_iflag, &u->c_iflag);
+ err |= get_user(k->c_oflag, &u->c_oflag);
+ err |= get_user(k->c_cflag, &u->c_cflag);
+ err |= get_user(k->c_lflag, &u->c_lflag);
+ err |= get_user(k->c_line, &u->c_line);
+ err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
+ if (k->c_lflag & ICANON) {
+ err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
+ err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
+ } else {
+ err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
+ err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
+ }
+ err |= get_user(k->c_ispeed, &u->c_ispeed);
+ err |= get_user(k->c_ospeed, &u->c_ospeed);
+ return err;
+}
+
+int kernel_termios_to_user_termios(struct termios2 __user *u,
+ struct ktermios *k)
+{
+ int err;
+ err = put_user(k->c_iflag, &u->c_iflag);
+ err |= put_user(k->c_oflag, &u->c_oflag);
+ err |= put_user(k->c_cflag, &u->c_cflag);
+ err |= put_user(k->c_lflag, &u->c_lflag);
+ err |= put_user(k->c_line, &u->c_line);
+ err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
+ if (!(k->c_lflag & ICANON)) {
+ err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
+ err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
+ } else {
+ err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
+ err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
+ }
+ err |= put_user(k->c_ispeed, &u->c_ispeed);
+ err |= put_user(k->c_ospeed, &u->c_ospeed);
+ return err;
+}
+
+int user_termios_to_kernel_termios_1(struct ktermios *k,
+ struct termios __user *u)
+{
+ int err;
+ err = get_user(k->c_iflag, &u->c_iflag);
+ err |= get_user(k->c_oflag, &u->c_oflag);
+ err |= get_user(k->c_cflag, &u->c_cflag);
+ err |= get_user(k->c_lflag, &u->c_lflag);
+ err |= get_user(k->c_line, &u->c_line);
+ err |= copy_from_user(k->c_cc, u->c_cc, NCCS);
+ if (k->c_lflag & ICANON) {
+ err |= get_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
+ err |= get_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
+ } else {
+ err |= get_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
+ err |= get_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
+ }
+ return err;
+}
+
+int kernel_termios_to_user_termios_1(struct termios __user *u,
+ struct ktermios *k)
+{
+ int err;
+ err = put_user(k->c_iflag, &u->c_iflag);
+ err |= put_user(k->c_oflag, &u->c_oflag);
+ err |= put_user(k->c_cflag, &u->c_cflag);
+ err |= put_user(k->c_lflag, &u->c_lflag);
+ err |= put_user(k->c_line, &u->c_line);
+ err |= copy_to_user(u->c_cc, k->c_cc, NCCS);
+ if (!(k->c_lflag & ICANON)) {
+ err |= put_user(k->c_cc[VMIN], &u->c_cc[_VMIN]);
+ err |= put_user(k->c_cc[VTIME], &u->c_cc[_VTIME]);
+ } else {
+ err |= put_user(k->c_cc[VEOF], &u->c_cc[VEOF]);
+ err |= put_user(k->c_cc[VEOL], &u->c_cc[VEOL]);
+ }
+ return err;
+}