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CentOS 7.0 - man page for swapcontext (centos section 2)

SWAPCONTEXT(2)				     Linux 2.6 Programmer's Guide			       SWAPCONTEXT(2)

NAME
swapcontext - Swap out old context with new context
SYNOPSIS
int sys_swapcontext (struct ucontext *old_ctx, struct ucontext *new_ctx, int r5, int r6, int r7, int r8, struct pt_regs *regs);
DESCRIPTION
swapcontext swaps out context old_ctx with new context new_ctx. The int r# values have no place in the system call functionality. The regs value indicates the current user register values from the user stack.
RETURN VALUE
swapcontext returns 0 on success; otherwise, swapcontext returns one of the errors listed in the "Errors" sec- tion.
ERRORS
-EFAULT swapcontext could not verify that the memory area pointed to by old_ctx or new_ctx was accessible for the operation. -SIGSEGV A fault occurred when the context was being copied into the kernel's image of the user's registers. The should only occur in an out-of-memory situation.
SEE ALSO
getcontext(2), sigaction(2), sigaltstack(2), sigprocmask(2)
AUTHOR
Niki Rahimi Linux 2.6 2004-March-12 SWAPCONTEXT(2)


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