Manual Section... (3) - page: bsd_signal
NAMEbsd_signal - signal handling with BSD semantics
typedef void (*sighandler_t)(int);
DESCRIPTIONThe bsd_signal() function takes the same arguments, and performs the same task, as signal(2).
The difference between the two is that bsd_signal() is guaranteed to provide reliable signal semantics, that is: a) the disposition of the signal is not reset to the default when the handler is invoked; b) delivery of further instances of the signal is blocked while the signal handler is executing; and c) if the handler interrupts a blocking system call, then the system call is automatically restarted. A portable application cannot rely on signal(2) to provide these guarantees.
RETURN VALUEThe bsd_signal() function returns the previous value of the signal handler, or SIG_ERR on error.
ERRORSAs for signal(2).
CONFORMING TO4.2BSD, POSIX.1-2001. POSIX.1-2008 removes the specification of bsd_signal(), recommending the use of sigaction(2) instead.
NOTESUse of bsd_signal() should be avoided; use sigaction(2) instead.
SEE ALSOsigaction(2), signal(2), sysv_signal(3), feature_test_macros(7), signal(7)
COLOPHONThis page is part of release 3.24 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
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Time: 15:26:44 GMT, June 11, 2010