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