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

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    Revision 815 - (hide 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 niro 532 /*
    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 niro 815 #ifndef signal
    92     __extern __sighandler_t signal(int, __sighandler_t);
    93     #endif
    94 niro 532 __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 */