explain_accept4_or_die(3) [debian man page]
explain_accept4_or_die(3) Library Functions Manual explain_accept4_or_die(3) NAME
explain_accept4_or_die - accept a connection on a socket and report errors SYNOPSIS
#include <libexplain/accept4.h> int explain_accept4_or_die(int fildes, struct sockaddr *sock_addr, socklen_t *sock_addr_size, int flags); int explain_accept4_on_error(int fildes, struct sockaddr *sock_addr, socklen_t *sock_addr_size, int flags); DESCRIPTION
The explain_accept4_or_die function is used to call the accept4(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_accept4(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_accept4_on_error function is used to call the accept4(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_accept4(3) function, but still returns to the caller. fildes The fildes, exactly as to be passed to the accept4(2) system call. sock_addr The sock_addr, exactly as to be passed to the accept4(2) system call. sock_addr_size The sock_addr_size, exactly as to be passed to the accept4(2) system call. flags The flags, exactly as to be passed to the accept4(2) system call. RETURN VALUE
The explain_accept4_or_die function only returns on success, see accept4(2) for more information. On failure, prints an explanation and exits, it does not return. The explain_accept4_on_error function always returns the value return by the wrapped accept4(2) system call. EXAMPLE
The explain_accept4_or_die function is intended to be used in a fashion similar to the following example: int result = explain_accept4_or_die(fildes, sock_addr, sock_addr_size, flags); SEE ALSO
accept4(2) accept a connection on a socket explain_accept4(3) explain accept4(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2009 Peter Miller explain_accept4_or_die(3)
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explain_mmap_or_die(3) Library Functions Manual explain_mmap_or_die(3) NAME
explain_mmap_or_die - map file or device into memory and report errors SYNOPSIS
#include <libexplain/mmap.h> void *explain_mmap_or_die(void *data, size_t data_size, int prot, int flags, int fildes, off_t offset); void *explain_mmap_on_error(void *data, size_t data_size, int prot, int flags, int fildes, off_t offset); DESCRIPTION
The explain_mmap_or_die function is used to call the mmap(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_mmap(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_mmap_on_error function is used to call the mmap(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_mmap(3) function, but still returns to the caller. data The data, exactly as to be passed to the mmap(2) system call. data_size The data_size, exactly as to be passed to the mmap(2) system call. prot The prot, exactly as to be passed to the mmap(2) system call. flags The flags, exactly as to be passed to the mmap(2) system call. fildes The fildes, exactly as to be passed to the mmap(2) system call. offset The offset, exactly as to be passed to the mmap(2) system call. RETURN VALUE
The explain_mmap_or_die function only returns on success, see mmap(2) for more information. On failure, prints an explanation and exits, it does not return. The explain_mmap_on_error function always returns the value return by the wrapped mmap(2) system call. EXAMPLE
The explain_mmap_or_die function is intended to be used in a fashion similar to the following example: explain_mmap_or_die(data, data_size, prot, flags, fildes, offset); SEE ALSO
mmap(2) map file or device into memory explain_mmap(3) explain mmap(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2010 Peter Miller explain_mmap_or_die(3)