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[COMMITTED PATCH] Add SIGWINCH to generic <bits/signum.h>.
- From: Roland McGrath <roland at hack dot frob dot com>
- To: "GNU C. Library" <libc-alpha at sourceware dot org>
- Date: Thu, 23 Jul 2015 16:46:06 -0700 (PDT)
- Subject: [COMMITTED PATCH] Add SIGWINCH to generic <bits/signum.h>.
- Authentication-results: sourceware.org; auth=none
The only configuration affected by this is NaCl. I've declared it a "bug
fix" because all real-world POSIX systems have SIGWINCH, so the "generic"
GNU API should include it.
* bits/signum.h: Update comments to mention 1003.1-2013 too.
(SIGWINCH): New macro.
diff --git a/bits/signum.h b/bits/signum.h
index a07a9b4..e6deefd 100644
@@ -28,9 +28,13 @@
# define SIG_HOLD ((__sighandler_t) 2) /* Add signal to hold mask. */
-/* We define here all the signal names listed in POSIX (1003.1-2008).
+/* We define here all the signal names listed in POSIX (1003.1-2008);
+ as of 1003.1-2013, no additional signals have been added by POSIX.
+ We also define here signal names that historically exist in every
+ real-world POSIX variant (e.g. SIGWINCH).
Signals in the 1-15 range are defined with their historical numbers.
- For other signals specified by POSIX, we use the BSD numbers. */
+ For other signals, we use the BSD numbers. */
/* ISO C99 signals. */
#define SIGINT 2 /* Interactive attention signal. */
@@ -50,7 +54,7 @@
#define SIGPIPE 13 /* Broken pipe. */
#define SIGALRM 14 /* Alarm clock. */
-/* New(er) POSIX signals (1003.1-2008). */
+/* New(er) POSIX signals (1003.1-2008, 1003.1-2013). */
#define SIGURG 16 /* High bandwidth data is available at a socket. */
#define SIGSTOP 17 /* Stopped (signal). */
#define SIGTSTP 18 /* Stopped. */
@@ -67,10 +71,14 @@
#define SIGUSR1 30 /* User-defined signal 1. */
#define SIGUSR2 31 /* User-defined signal 2. */
+/* Nonstandard signals found in all modern POSIX systems
+ (including both BSD and Linux). */
+#define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */
#define _NSIG 32
/* Archaic names for compatibility. */
-#define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP11 */
+#define SIGIOT SIGABRT /* IOT instruction, abort() on a PDP-11. */
#define SIGCLD SIGCHLD /* Old System V name */
#endif /* <signal.h> included. */