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authorMaciej W. Rozycki <macro@embecosm.com>2022-01-26 12:22:54 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-02-01 19:27:03 +0300
commitb51afdc797fe75c6efa229a19ec797046b7d047d (patch)
treea269f9a2fa800499d701c01242b29fd643a2e363 /include/uapi/linux/cyclades.h
parentff79be505ad858dacf43772733e4a33c805317de (diff)
downloadlinux-b51afdc797fe75c6efa229a19ec797046b7d047d.tar.xz
tty: Partially revert the removal of the Cyclades public API
commit f23653fe64479d96910bfda2b700b1af17c991ac upstream. Fix a user API regression introduced with commit f76edd8f7ce0 ("tty: cyclades, remove this orphan"), which removed a part of the API and caused compilation errors for user programs using said part, such as GCC 9 in its libsanitizer component[1]: .../libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:160:10: fatal error: linux/cyclades.h: No such file or directory 160 | #include <linux/cyclades.h> | ^~~~~~~~~~~~~~~~~~ compilation terminated. make[4]: *** [Makefile:664: sanitizer_platform_limits_posix.lo] Error 1 As the absolute minimum required bring `struct cyclades_monitor' and ioctl numbers back then so as to make the library build again. Add a preprocessor warning as to the obsolescence of the features provided. References: [1] GCC PR sanitizer/100379, "cyclades.h is removed from linux kernel header files", <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100379> Fixes: f76edd8f7ce0 ("tty: cyclades, remove this orphan") Cc: stable@vger.kernel.org # v5.13+ Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Maciej W. Rozycki <macro@embecosm.com> Link: https://lore.kernel.org/r/alpine.DEB.2.20.2201260733430.11348@tpp.orcam.me.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/cyclades.h')
-rw-r--r--include/uapi/linux/cyclades.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/include/uapi/linux/cyclades.h b/include/uapi/linux/cyclades.h
new file mode 100644
index 000000000000..6225c5aebe06
--- /dev/null
+++ b/include/uapi/linux/cyclades.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+
+#ifndef _UAPI_LINUX_CYCLADES_H
+#define _UAPI_LINUX_CYCLADES_H
+
+#warning "Support for features provided by this header has been removed"
+#warning "Please consider updating your code"
+
+struct cyclades_monitor {
+ unsigned long int_count;
+ unsigned long char_count;
+ unsigned long char_max;
+ unsigned long char_last;
+};
+
+#define CYGETMON 0x435901
+#define CYGETTHRESH 0x435902
+#define CYSETTHRESH 0x435903
+#define CYGETDEFTHRESH 0x435904
+#define CYSETDEFTHRESH 0x435905
+#define CYGETTIMEOUT 0x435906
+#define CYSETTIMEOUT 0x435907
+#define CYGETDEFTIMEOUT 0x435908
+#define CYSETDEFTIMEOUT 0x435909
+#define CYSETRFLOW 0x43590a
+#define CYGETRFLOW 0x43590b
+#define CYSETRTSDTR_INV 0x43590c
+#define CYGETRTSDTR_INV 0x43590d
+#define CYZSETPOLLCYCLE 0x43590e
+#define CYZGETPOLLCYCLE 0x43590f
+#define CYGETCD1400VER 0x435910
+#define CYSETWAIT 0x435912
+#define CYGETWAIT 0x435913
+
+#endif /* _UAPI_LINUX_CYCLADES_H */