1 files changed, 180 insertions, 0 deletions
diff --git a/libbb/u_signal_names.c b/libbb/u_signal_names.c
new file mode 100644
index 0000000..915eea5
--- /dev/null
+++ b/libbb/u_signal_names.c
@@ -0,0 +1,180 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Signal name/number conversion routines.
+ *
+ * Copyright 2006 Rob Landley <rob@landley.net>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* Believe it or not, but some arches have more than 32 SIGs!
+ * HPPA: SIGSTKFLT == 36. */
+
+static const char signals[][7] = {
+	// SUSv3 says kill must support these, and specifies the numerical values,
+	// http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
+	// {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
+	// {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
+	// And Posix adds the following:
+	// {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
+	// {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
+	// {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
+	// {SIGTTOU, "TTOU"}
+
+	[0] = "EXIT",
+#ifdef SIGHUP
+	[SIGHUP   ] = "HUP",
+#endif
+#ifdef SIGINT
+	[SIGINT   ] = "INT",
+#endif
+#ifdef SIGQUIT
+	[SIGQUIT  ] = "QUIT",
+#endif
+#ifdef SIGILL
+	[SIGILL   ] = "ILL",
+#endif
+#ifdef SIGTRAP
+	[SIGTRAP  ] = "TRAP",
+#endif
+#ifdef SIGABRT
+	[SIGABRT  ] = "ABRT",
+#endif
+#ifdef SIGBUS
+	[SIGBUS   ] = "BUS",
+#endif
+#ifdef SIGFPE
+	[SIGFPE   ] = "FPE",
+#endif
+#ifdef SIGKILL
+	[SIGKILL  ] = "KILL",
+#endif
+#ifdef SIGUSR1
+	[SIGUSR1  ] = "USR1",
+#endif
+#ifdef SIGSEGV
+	[SIGSEGV  ] = "SEGV",
+#endif
+#ifdef SIGUSR2
+	[SIGUSR2  ] = "USR2",
+#endif
+#ifdef SIGPIPE
+	[SIGPIPE  ] = "PIPE",
+#endif
+#ifdef SIGALRM
+	[SIGALRM  ] = "ALRM",
+#endif
+#ifdef SIGTERM
+	[SIGTERM  ] = "TERM",
+#endif
+#ifdef SIGSTKFLT
+	[SIGSTKFLT] = "STKFLT",
+#endif
+#ifdef SIGCHLD
+	[SIGCHLD  ] = "CHLD",
+#endif
+#ifdef SIGCONT
+	[SIGCONT  ] = "CONT",
+#endif
+#ifdef SIGSTOP
+	[SIGSTOP  ] = "STOP",
+#endif
+#ifdef SIGTSTP
+	[SIGTSTP  ] = "TSTP",
+#endif
+#ifdef SIGTTIN
+	[SIGTTIN  ] = "TTIN",
+#endif
+#ifdef SIGTTOU
+	[SIGTTOU  ] = "TTOU",
+#endif
+#ifdef SIGURG
+	[SIGURG   ] = "URG",
+#endif
+#ifdef SIGXCPU
+	[SIGXCPU  ] = "XCPU",
+#endif
+#ifdef SIGXFSZ
+	[SIGXFSZ  ] = "XFSZ",
+#endif
+#ifdef SIGVTALRM
+	[SIGVTALRM] = "VTALRM",
+#endif
+#ifdef SIGPROF
+	[SIGPROF  ] = "PROF",
+#endif
+#ifdef SIGWINCH
+	[SIGWINCH ] = "WINCH",
+#endif
+#ifdef SIGPOLL
+	[SIGPOLL  ] = "POLL",
+#endif
+#ifdef SIGPWR
+	[SIGPWR   ] = "PWR",
+#endif
+#ifdef SIGSYS
+	[SIGSYS   ] = "SYS",
+#endif
+};
+
+// Convert signal name to number.
+
+int FAST_FUNC get_signum(const char *name)
+{
+	unsigned i;
+
+	i = bb_strtou(name, NULL, 10);
+	if (!errno)
+		return i;
+	if (strncasecmp(name, "SIG", 3) == 0)
+		name += 3;
+	for (i = 0; i < ARRAY_SIZE(signals); i++)
+		if (strcasecmp(name, signals[i]) == 0)
+			return i;
+
+#if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
+	/* SIGIO[T] are aliased to other names,
+	 * thus cannot be stored in the signals[] array.
+	 * Need special code to recognize them */
+	if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
+#ifdef SIGIO
+		if (!name[2])
+			return SIGIO;
+#endif
+#ifdef SIGIOT
+		if ((name[2] | 0x20) == 't' && !name[3])
+			return SIGIOT;
+#endif
+	}
+#endif
+
+	return -1;
+}
+
+// Convert signal number to name
+
+const char* FAST_FUNC get_signame(int number)
+{
+	if ((unsigned)number < ARRAY_SIZE(signals)) {
+		if (signals[number][0]) /* if it's not an empty str */
+			return signals[number];
+	}
+
+	return itoa(number);
+}
+
+
+// Print the whole signal list
+
+void FAST_FUNC print_signames(void)
+{
+	unsigned signo;
+
+	for (signo = 1; signo < ARRAY_SIZE(signals); signo++) {
+		const char *name = signals[signo];
+		if (name[0])
+			puts(name);
+	}
+}