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    Contents of /trunk/mkinitrd-magellan/klibc/usr/include/signal.h

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    Revision 815 - (show annotations) (download)
    Fri Apr 24 18:32:46 2009 UTC (15 years ago) by niro
    File MIME type: text/plain
    File size: 2898 byte(s) 
    -updated to klibc-1.5.15
    1 /*
    2 * signal.h
    3 */
    4
    5 #ifndef _SIGNAL_H
    6 #define _SIGNAL_H
    7
    8 #include <klibc/compiler.h>
    9 #include <klibc/extern.h>
    10 #include <string.h> /* For memset() */
    11 #include <limits.h> /* For LONG_BIT */
    12 #include <sys/types.h>
    13
    14 #include <klibc/archsignal.h> /* Includes <asm/signal.h> if appropriate */
    15
    16 /* glibc seems to use sig_atomic_t as "int" pretty much on all architectures.
    17 Do the same, but allow the architecture to override. */
    18 #ifndef _KLIBC_HAS_ARCH_SIG_ATOMIC_T
    19 typedef int sig_atomic_t;
    20 #endif
    21
    22 /* Some architectures don't define these */
    23 #ifndef SA_RESETHAND
    24 # define SA_RESETHAND SA_ONESHOT
    25 #endif
    26 #ifndef SA_NODEFER
    27 # define SA_NODEFER SA_NOMASK
    28 #endif
    29 /* Some architectures define NSIG and not _NSIG or vice versa */
    30 #ifndef NSIG
    31 # define NSIG _NSIG
    32 #endif
    33 #ifndef _NSIG
    34 # define _NSIG NSIG
    35 #endif
    36
    37 /* If we don't have any real-time signals available to userspace,
    38 hide them all */
    39 #if SIGRTMAX <= SIGRTMIN
    40 # undef SIGRTMIN
    41 # undef SIGRTMAX
    42 #endif
    43
    44 /* The kernel header files are inconsistent whether or not
    45 SIGRTMAX is inclusive or exclusive. POSIX seems to state that
    46 it's inclusive, however. */
    47 #if SIGRTMAX >= _NSIG
    48 # undef SIGRTMAX
    49 # define SIGRTMAX (_NSIG-1)
    50 #endif
    51
    52 __extern const char *const sys_siglist[_NSIG];
    53 __extern const char *const sys_sigabbrev[_NSIG];
    54
    55 /* This assumes sigset_t is either an unsigned long or an array of such,
    56 and that _NSIG_BPW in the kernel is always LONG_BIT */
    57
    58 static __inline__ int sigemptyset(sigset_t * __set)
    59 {
    60 memset(__set, 0, sizeof *__set);
    61 return 0;
    62 }
    63 static __inline__ int sigfillset(sigset_t * __set)
    64 {
    65 memset(__set, ~0, sizeof *__set);
    66 return 0;
    67 }
    68 static __inline__ int sigaddset(sigset_t * __set, int __signum)
    69 {
    70 unsigned long *__lset = (unsigned long *)__set;
    71 __signum--; /* Signal 0 is not in the set */
    72 __lset[__signum / LONG_BIT] |= 1UL << (__signum % LONG_BIT);
    73 return 0;
    74 }
    75 static __inline__ int sigdelset(sigset_t * __set, int __signum)
    76 {
    77 unsigned long *__lset = (unsigned long *)__set;
    78 __signum--; /* Signal 0 is not in the set */
    79 __lset[__signum / LONG_BIT] &= ~(1UL << (__signum % LONG_BIT));
    80 return 0;
    81 }
    82 static __inline__ int sigismember(sigset_t * __set, int __signum)
    83 {
    84 unsigned long *__lset = (unsigned long *)__set;
    85 __signum--; /* Signal 0 is not in the set */
    86 return (int)((__lset[__signum / LONG_BIT] >> (__signum % LONG_BIT)) &
    87 1);
    88 }
    89
    90 __extern __sighandler_t __signal(int, __sighandler_t, int);
    91 #ifndef signal
    92 __extern __sighandler_t signal(int, __sighandler_t);
    93 #endif
    94 __extern __sighandler_t sysv_signal(int, __sighandler_t);
    95 __extern __sighandler_t bsd_signal(int, __sighandler_t);
    96 __extern int sigaction(int, const struct sigaction *, struct sigaction *);
    97 __extern int sigprocmask(int, const sigset_t *, sigset_t *);
    98 __extern int sigpending(sigset_t *);
    99 __extern int sigsuspend(const sigset_t *);
    100 __extern int raise(int);
    101 __extern int kill(pid_t, int);
    102
    103 #endif /* _SIGNAL_H */