[PATCH] linux: Add generic ioctl implementation
Adhemerval Zanella
adhemerval.zanella@linaro.org
Fri Nov 19 19:58:52 GMT 2021
The powerpc is refactor to use the default implementation.
---
sysdeps/unix/sysv/linux/internal-ioctl.h | 23 +++++++
sysdeps/unix/sysv/linux/ioctl.c | 49 +++++++++++++
.../unix/sysv/linux/powerpc/internal-ioctl.h | 46 +++++++++++++
sysdeps/unix/sysv/linux/powerpc/ioctl.c | 68 -------------------
4 files changed, 118 insertions(+), 68 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/internal-ioctl.h
create mode 100644 sysdeps/unix/sysv/linux/ioctl.c
create mode 100644 sysdeps/unix/sysv/linux/powerpc/internal-ioctl.h
delete mode 100644 sysdeps/unix/sysv/linux/powerpc/ioctl.c
diff --git a/sysdeps/unix/sysv/linux/internal-ioctl.h b/sysdeps/unix/sysv/linux/internal-ioctl.h
new file mode 100644
index 0000000000..697b086703
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/internal-ioctl.h
@@ -0,0 +1,23 @@
+/* Linux internal definitions for ioctl.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+static inline bool
+__ioctl_arch (int *r, int fd, unsigned long request, void *arg)
+{
+ return false;
+}
diff --git a/sysdeps/unix/sysv/linux/ioctl.c b/sysdeps/unix/sysv/linux/ioctl.c
new file mode 100644
index 0000000000..c4855d6302
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/ioctl.c
@@ -0,0 +1,49 @@
+/* Control device. Linux generic implementation.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdarg.h>
+#include <sys/ioctl.h>
+#include <sysdep.h>
+#include <internal-ioctl.h>
+
+int
+__ioctl (int fd, unsigned long int request, ...)
+{
+ va_list args;
+ va_start (args, request);
+ void *arg = va_arg (args, void *);
+ va_end (args);
+
+ int r;
+ if (!__ioctl_arch (&r, fd, request, arg))
+ {
+ r = INTERNAL_SYSCALL_CALL (ioctl, fd, request, arg);
+ if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (r)))
+ {
+ __set_errno (-r);
+ return -1;
+ }
+ }
+ return r;
+}
+libc_hidden_def (__ioctl)
+weak_alias (__ioctl, ioctl)
+
+#if __TIMESIZE != 64
+strong_alias (__ioctl, __ioctl_time64)
+#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/internal-ioctl.h b/sysdeps/unix/sysv/linux/powerpc/internal-ioctl.h
new file mode 100644
index 0000000000..3a2adce7c3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/internal-ioctl.h
@@ -0,0 +1,46 @@
+/* Linux internal definitions for ioctl.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <termios.h>
+
+static inline bool
+__ioctl_arch (int *r, int fd, unsigned long request, void *arg)
+{
+ switch (request)
+ {
+ case TCGETS:
+ *r = __tcgetattr (fd, (struct termios *) arg);
+ break;
+
+ case TCSETS:
+ *r = __tcsetattr (fd, TCSANOW, (struct termios *) arg);
+ break;
+
+ case TCSETSW:
+ *r = __tcsetattr (fd, TCSADRAIN, (struct termios *) arg);
+ break;
+
+ case TCSETSF:
+ *r = __tcsetattr (fd, TCSAFLUSH, (struct termios *) arg);
+ break;
+
+ default:
+ return false;
+ }
+ return true;
+}
diff --git a/sysdeps/unix/sysv/linux/powerpc/ioctl.c b/sysdeps/unix/sysv/linux/powerpc/ioctl.c
deleted file mode 100644
index a81c7ba54c..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/ioctl.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/* Copyright (C) 1998-2021 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <stdarg.h>
-#include <termios.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sysdep.h>
-
-/* The user-visible size of struct termios has changed. Catch ioctl calls
- using the new-style struct termios, and translate them to old-style. */
-
-int
-__ioctl (int fd, unsigned long int request, ...)
-{
- void *arg;
- va_list ap;
- int result;
-
- va_start (ap, request);
- arg = va_arg (ap, void *);
-
- switch (request)
- {
- case TCGETS:
- result = __tcgetattr (fd, (struct termios *) arg);
- break;
-
- case TCSETS:
- result = __tcsetattr (fd, TCSANOW, (struct termios *) arg);
- break;
-
- case TCSETSW:
- result = __tcsetattr (fd, TCSADRAIN, (struct termios *) arg);
- break;
-
- case TCSETSF:
- result = __tcsetattr (fd, TCSAFLUSH, (struct termios *) arg);
- break;
-
- default:
- result = INLINE_SYSCALL (ioctl, 3, fd, request, arg);
- break;
- }
-
- va_end (ap);
-
- return result;
-}
-libc_hidden_def (__ioctl)
-weak_alias (__ioctl, ioctl)
-#if __TIMESIZE != 64
-weak_alias (__ioctl, __ioctl_time64)
-#endif
--
2.32.0
More information about the Libc-alpha
mailing list