Magellan Linux

  • Back to homepage
    • /[magellan-source]/tags/mkinitrd-6_2_0/libbb/u_signal_names.c

    Contents of /tags/mkinitrd-6_2_0/libbb/u_signal_names.c

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 994 - (show annotations) (download)
    Sun May 30 11:53:18 2010 UTC (14 years ago) by niro
    File MIME type: text/plain
    File size: 3488 byte(s) 
    tagged 'mkinitrd-6_2_0'
    1 /* vi: set sw=4 ts=4: */
    2 /*
    3 * Signal name/number conversion routines.
    4 *
    5 * Copyright 2006 Rob Landley <rob@landley.net>
    6 *
    7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
    8 */
    9
    10 #include "libbb.h"
    11
    12 /* Believe it or not, but some arches have more than 32 SIGs!
    13 * HPPA: SIGSTKFLT == 36. */
    14
    15 static const char signals[][7] = {
    16 // SUSv3 says kill must support these, and specifies the numerical values,
    17 // http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
    18 // {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
    19 // {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
    20 // And Posix adds the following:
    21 // {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
    22 // {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
    23 // {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
    24 // {SIGTTOU, "TTOU"}
    25
    26 [0] = "EXIT",
    27 #ifdef SIGHUP
    28 [SIGHUP ] = "HUP",
    29 #endif
    30 #ifdef SIGINT
    31 [SIGINT ] = "INT",
    32 #endif
    33 #ifdef SIGQUIT
    34 [SIGQUIT ] = "QUIT",
    35 #endif
    36 #ifdef SIGILL
    37 [SIGILL ] = "ILL",
    38 #endif
    39 #ifdef SIGTRAP
    40 [SIGTRAP ] = "TRAP",
    41 #endif
    42 #ifdef SIGABRT
    43 [SIGABRT ] = "ABRT",
    44 #endif
    45 #ifdef SIGBUS
    46 [SIGBUS ] = "BUS",
    47 #endif
    48 #ifdef SIGFPE
    49 [SIGFPE ] = "FPE",
    50 #endif
    51 #ifdef SIGKILL
    52 [SIGKILL ] = "KILL",
    53 #endif
    54 #ifdef SIGUSR1
    55 [SIGUSR1 ] = "USR1",
    56 #endif
    57 #ifdef SIGSEGV
    58 [SIGSEGV ] = "SEGV",
    59 #endif
    60 #ifdef SIGUSR2
    61 [SIGUSR2 ] = "USR2",
    62 #endif
    63 #ifdef SIGPIPE
    64 [SIGPIPE ] = "PIPE",
    65 #endif
    66 #ifdef SIGALRM
    67 [SIGALRM ] = "ALRM",
    68 #endif
    69 #ifdef SIGTERM
    70 [SIGTERM ] = "TERM",
    71 #endif
    72 #ifdef SIGSTKFLT
    73 [SIGSTKFLT] = "STKFLT",
    74 #endif
    75 #ifdef SIGCHLD
    76 [SIGCHLD ] = "CHLD",
    77 #endif
    78 #ifdef SIGCONT
    79 [SIGCONT ] = "CONT",
    80 #endif
    81 #ifdef SIGSTOP
    82 [SIGSTOP ] = "STOP",
    83 #endif
    84 #ifdef SIGTSTP
    85 [SIGTSTP ] = "TSTP",
    86 #endif
    87 #ifdef SIGTTIN
    88 [SIGTTIN ] = "TTIN",
    89 #endif
    90 #ifdef SIGTTOU
    91 [SIGTTOU ] = "TTOU",
    92 #endif
    93 #ifdef SIGURG
    94 [SIGURG ] = "URG",
    95 #endif
    96 #ifdef SIGXCPU
    97 [SIGXCPU ] = "XCPU",
    98 #endif
    99 #ifdef SIGXFSZ
    100 [SIGXFSZ ] = "XFSZ",
    101 #endif
    102 #ifdef SIGVTALRM
    103 [SIGVTALRM] = "VTALRM",
    104 #endif
    105 #ifdef SIGPROF
    106 [SIGPROF ] = "PROF",
    107 #endif
    108 #ifdef SIGWINCH
    109 [SIGWINCH ] = "WINCH",
    110 #endif
    111 #ifdef SIGPOLL
    112 [SIGPOLL ] = "POLL",
    113 #endif
    114 #ifdef SIGPWR
    115 [SIGPWR ] = "PWR",
    116 #endif
    117 #ifdef SIGSYS
    118 [SIGSYS ] = "SYS",
    119 #endif
    120 };
    121
    122 // Convert signal name to number.
    123
    124 int FAST_FUNC get_signum(const char *name)
    125 {
    126 unsigned i;
    127
    128 i = bb_strtou(name, NULL, 10);
    129 if (!errno)
    130 return i;
    131 if (strncasecmp(name, "SIG", 3) == 0)
    132 name += 3;
    133 for (i = 0; i < ARRAY_SIZE(signals); i++)
    134 if (strcasecmp(name, signals[i]) == 0)
    135 return i;
    136
    137 #if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
    138 /* SIGIO[T] are aliased to other names,
    139 * thus cannot be stored in the signals[] array.
    140 * Need special code to recognize them */
    141 if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
    142 #ifdef SIGIO
    143 if (!name[2])
    144 return SIGIO;
    145 #endif
    146 #ifdef SIGIOT
    147 if ((name[2] | 0x20) == 't' && !name[3])
    148 return SIGIOT;
    149 #endif
    150 }
    151 #endif
    152
    153 return -1;
    154 }
    155
    156 // Convert signal number to name
    157
    158 const char* FAST_FUNC get_signame(int number)
    159 {
    160 if ((unsigned)number < ARRAY_SIZE(signals)) {
    161 if (signals[number][0]) /* if it's not an empty str */
    162 return signals[number];
    163 }
    164
    165 return itoa(number);
    166 }
    167
    168
    169 // Print the whole signal list
    170
    171 void FAST_FUNC print_signames(void)
    172 {
    173 unsigned signo;
    174
    175 for (signo = 1; signo < ARRAY_SIZE(signals); signo++) {
    176 const char *name = signals[signo];
    177 if (name[0])
    178 puts(name);
    179 }
    180 }