1SIGINTERRUPT(3)            Linux Programmer's Manual           SIGINTERRUPT(3)
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NAME

6       siginterrupt - allow signals to interrupt system calls
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SYNOPSIS

9       #include <signal.h>
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11       int siginterrupt(int sig, int flag);
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DESCRIPTION

14       The siginterrupt() function changes the restart behaviour when a system
15       call is interrupted by the signal sig.  If the flag argument  is  false
16       (0),  then  system calls will be restarted if interrupted by the speci‐
17       fied signal sig.  This is the default  behaviour  in  Linux.   However,
18       when a new signal handler is specified with the signal(2) function, the
19       system call is interrupted by default.
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21       If the flags argument is true (1) and no  data  has  been  transferred,
22       then a system call interrupted by the signal sig will return -1 and the
23       global variable errno will be set to EINTR.
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25       If the flags argument is true (1) and data transfer has  started,  then
26       the  system  call will be interrupted and will return the actual amount
27       of data transferred.
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RETURN VALUE

30       The siginterrupt() function returns 0 on success, or -1 if  the  signal
31       number sig is invalid.
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ERRORS

34       EINVAL The specified signal number is invalid.
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CONFORMING TO

37       4.3BSD, POSIX.1-2001.
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SEE ALSO

40       signal(2)
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44                                  1993-04-13                   SIGINTERRUPT(3)
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