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Diffstat (limited to 'signame.c')
| -rw-r--r-- | signame.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/signame.c b/signame.c new file mode 100644 index 0000000..6f3383d --- /dev/null +++ b/signame.c @@ -0,0 +1,256 @@ +/* Convert between signal names and numbers. +Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, +2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software +Foundation, Inc. +This file is part of GNU Make. + +GNU Make is free software; you can redistribute it and/or modify it under the +terms of the GNU General Public License as published by the Free Software +Foundation; either version 3 of the License, or (at your option) any later +version. + +GNU Make 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 General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include "make.h" + +/* If the system provides strsignal, we don't need it. */ + +#if !HAVE_STRSIGNAL + +/* If the system provides sys_siglist, we'll use that. + Otherwise create our own. + */ + +#if !HAVE_DECL_SYS_SIGLIST + +/* Some systems do not define NSIG in <signal.h>. */ +#ifndef NSIG +#ifdef _NSIG +#define NSIG _NSIG +#else +#define NSIG 32 +#endif +#endif + +/* There is too much variation in Sys V signal numbers and names, so + we must initialize them at runtime. */ + +static const char *undoc; + +static const char *sys_siglist[NSIG]; + +/* Table of abbreviations for signals. Note: A given number can + appear more than once with different abbreviations. */ +#define SIG_TABLE_SIZE (NSIG*2) + +typedef struct + { + int number; + const char *abbrev; + } num_abbrev; + +static num_abbrev sig_table[SIG_TABLE_SIZE]; + +/* Number of elements of sig_table used. */ +static int sig_table_nelts = 0; + +/* Enter signal number NUMBER into the tables with ABBREV and NAME. */ + +static void +init_sig (int number, const char *abbrev, const char *name) +{ + /* If this value is ever greater than NSIG it seems like it'd be a bug in + the system headers, but... better safe than sorry. We know, for + example, that this isn't always true on VMS. */ + + if (number >= 0 && number < NSIG) + sys_siglist[number] = name; + + if (sig_table_nelts < SIG_TABLE_SIZE) + { + sig_table[sig_table_nelts].number = number; + sig_table[sig_table_nelts++].abbrev = abbrev; + } +} + +static int +signame_init (void) +{ + int i; + + undoc = xstrdup (_("unknown signal")); + + /* Initialize signal names. */ + for (i = 0; i < NSIG; i++) + sys_siglist[i] = undoc; + + /* Initialize signal names. */ +#if defined (SIGHUP) + init_sig (SIGHUP, "HUP", _("Hangup")); +#endif +#if defined (SIGINT) + init_sig (SIGINT, "INT", _("Interrupt")); +#endif +#if defined (SIGQUIT) + init_sig (SIGQUIT, "QUIT", _("Quit")); +#endif +#if defined (SIGILL) + init_sig (SIGILL, "ILL", _("Illegal Instruction")); +#endif +#if defined (SIGTRAP) + init_sig (SIGTRAP, "TRAP", _("Trace/breakpoint trap")); +#endif + /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because + SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't. */ +#if defined (SIGABRT) + init_sig (SIGABRT, "ABRT", _("Aborted")); +#endif +#if defined (SIGIOT) + init_sig (SIGIOT, "IOT", _("IOT trap")); +#endif +#if defined (SIGEMT) + init_sig (SIGEMT, "EMT", _("EMT trap")); +#endif +#if defined (SIGFPE) + init_sig (SIGFPE, "FPE", _("Floating point exception")); +#endif +#if defined (SIGKILL) + init_sig (SIGKILL, "KILL", _("Killed")); +#endif +#if defined (SIGBUS) + init_sig (SIGBUS, "BUS", _("Bus error")); +#endif +#if defined (SIGSEGV) + init_sig (SIGSEGV, "SEGV", _("Segmentation fault")); +#endif +#if defined (SIGSYS) + init_sig (SIGSYS, "SYS", _("Bad system call")); +#endif +#if defined (SIGPIPE) + init_sig (SIGPIPE, "PIPE", _("Broken pipe")); +#endif +#if defined (SIGALRM) + init_sig (SIGALRM, "ALRM", _("Alarm clock")); +#endif +#if defined (SIGTERM) + init_sig (SIGTERM, "TERM", _("Terminated")); +#endif +#if defined (SIGUSR1) + init_sig (SIGUSR1, "USR1", _("User defined signal 1")); +#endif +#if defined (SIGUSR2) + init_sig (SIGUSR2, "USR2", _("User defined signal 2")); +#endif + /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that + is what is in POSIX.1. */ +#if defined (SIGCHLD) + init_sig (SIGCHLD, "CHLD", _("Child exited")); +#endif +#if defined (SIGCLD) + init_sig (SIGCLD, "CLD", _("Child exited")); +#endif +#if defined (SIGPWR) + init_sig (SIGPWR, "PWR", _("Power failure")); +#endif +#if defined (SIGTSTP) + init_sig (SIGTSTP, "TSTP", _("Stopped")); +#endif +#if defined (SIGTTIN) + init_sig (SIGTTIN, "TTIN", _("Stopped (tty input)")); +#endif +#if defined (SIGTTOU) + init_sig (SIGTTOU, "TTOU", _("Stopped (tty output)")); +#endif +#if defined (SIGSTOP) + init_sig (SIGSTOP, "STOP", _("Stopped (signal)")); +#endif +#if defined (SIGXCPU) + init_sig (SIGXCPU, "XCPU", _("CPU time limit exceeded")); +#endif +#if defined (SIGXFSZ) + init_sig (SIGXFSZ, "XFSZ", _("File size limit exceeded")); +#endif +#if defined (SIGVTALRM) + init_sig (SIGVTALRM, "VTALRM", _("Virtual timer expired")); +#endif +#if defined (SIGPROF) + init_sig (SIGPROF, "PROF", _("Profiling timer expired")); +#endif +#if defined (SIGWINCH) + /* "Window size changed" might be more accurate, but even if that + is all that it means now, perhaps in the future it will be + extended to cover other kinds of window changes. */ + init_sig (SIGWINCH, "WINCH", _("Window changed")); +#endif +#if defined (SIGCONT) + init_sig (SIGCONT, "CONT", _("Continued")); +#endif +#if defined (SIGURG) + init_sig (SIGURG, "URG", _("Urgent I/O condition")); +#endif +#if defined (SIGIO) + /* "I/O pending" has also been suggested. A disadvantage is + that signal only happens when the process has + asked for it, not everytime I/O is pending. Another disadvantage + is the confusion from giving it a different name than under Unix. */ + init_sig (SIGIO, "IO", _("I/O possible")); +#endif +#if defined (SIGWIND) + init_sig (SIGWIND, "WIND", _("SIGWIND")); +#endif +#if defined (SIGPHONE) + init_sig (SIGPHONE, "PHONE", _("SIGPHONE")); +#endif +#if defined (SIGPOLL) + init_sig (SIGPOLL, "POLL", _("I/O possible")); +#endif +#if defined (SIGLOST) + init_sig (SIGLOST, "LOST", _("Resource lost")); +#endif +#if defined (SIGDANGER) + init_sig (SIGDANGER, "DANGER", _("Danger signal")); +#endif +#if defined (SIGINFO) + init_sig (SIGINFO, "INFO", _("Information request")); +#endif +#if defined (SIGNOFP) + init_sig (SIGNOFP, "NOFP", _("Floating point co-processor not available")); +#endif + + return 1; +} + +#endif /* HAVE_DECL_SYS_SIGLIST */ + + +char * +strsignal (int sig) +{ + static char buf[] = "Signal 12345678901234567890"; + +#if ! HAVE_DECL_SYS_SIGLIST +# if HAVE_DECL__SYS_SIGLIST +# define sys_siglist _sys_siglist +# elif HAVE_DECL___SYS_SIGLIST +# define sys_siglist __sys_siglist +# else + static char sig_initted = 0; + + if (!sig_initted) + sig_initted = signame_init (); +# endif +#endif + + if (sig > 0 || sig < NSIG) + return (char *) sys_siglist[sig]; + + sprintf (buf, "Signal %d", sig); + return buf; +} + +#endif /* HAVE_STRSIGNAL */ |