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nostk(2) [bsd man page]

NOSTK(2)							System Calls Manual							  NOSTK(2)

NAME
nostk - allow process to manage its own stack (2BSD) SYNOPSYS
nostk(); DESCRIPTION
Nostk informs the system that the process wishes to manage its own stack. The system releases the stack segment(s) it has reserved, making them available for allocation (via brk(2)) by the user. C programs should use nostk only with great caution and understanding of the C language calling and stack conventions. It is most useful for assembler programs that want to use the entire available address space. SEE ALSO
stack(5) BUGS
Nostk is unique to the PDP-11 and 2BSD; its use is discouraged. 3rd Berkeley Distribution June 24, 1987 NOSTK(2)

Check Out this Related Man Page

sigstack(2)							System Calls Manual						       sigstack(2)

Name
       sigstack - set or get signal stack context

Syntax
       #include <signal.h>

       struct sigstack {
       caddr_t	 ss_sp;
       int  ss_onstack;
       };

       sigstack(ss, oss)
       struct sigstack *ss, *oss;

Description
       The  system  call  allows users to define an alternate stack on which signals are to be processed.  If ss is nonzero, it specifies a signal
       stack on which to deliver signals and tells the system if the process is currently executing on that stack.  When a signal's  action  indi-
       cates  its handler should execute on the signal stack (specified with a call), the system checks to see if the process is currently execut-
       ing on that stack.  If the process is not currently executing on the signal stack, the system arranges a switch to the signal stack for the
       duration of the signal handler's execution.  If oss is nonzero, the current signal stack state is returned.

       Signal stacks are not grown'automatically, as is done for the normal stack.  If the stack overflows, unpredictable results may occur.

Return Values
       Upon successful completion, a value of zero (0) is returned.  Otherwise, a value of -1 is returned and errno is set to indicate the error.

Diagnostics
       The system call fails and the signal stack context remains unchanged, if one of the following occurs.

       [EFAULT]       Either ss or oss points to memory that is not a valid part of the process address space.

See Also
       sigvec(2), setjmp(3)

																       sigstack(2)

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