siginterrupt man page on Scientific

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

       siginterrupt - allow signals to interrupt system calls

       #include <signal.h>

       int siginterrupt(int sig, int flag);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       siginterrupt(): _BSD_SOURCE || _XOPEN_SOURCE >= 500

       The  siginterrupt() function changes the restart behavior when a system
       call is interrupted by the signal sig.  If the flag argument  is	 false
       (0),  then  system calls will be restarted if interrupted by the speci‐
       fied signal sig.	 This is the default behavior in Linux.	 However, when
       a new signal handler is specified with the signal(2) function, the sys‐
       tem call is interrupted by default.

       If the flag argument is true (1) and no data has been transferred, then
       a  system  call	interrupted by the signal sig will return -1 and errno
       will be set to EINTR.

       If the flag argument is true (1) and data transfer  has	started,  then
       the  system  call will be interrupted and will return the actual amount
       of data transferred.

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

       EINVAL The specified signal number is invalid.

       4.3BSD,	POSIX.1-2001.	POSIX.1-2008 marks siginterrupt() as obsolete,
       recommending the use of sigaction(2) with the SA_RESTART flag instead.


       This page is part of release 3.22 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at

				  2009-03-15		       SIGINTERRUPT(3)

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