explain_setsockopt_or_die(3) Library Functions Manual explain_setsockopt_or_die(3)NAME
explain_setsockopt_or_die - get and set options on sockets and report errors
SYNOPSIS
#include <libexplain/setsockopt.h>
void explain_setsockopt_or_die(int fildes, int level, int name, void *data, socklen_t data_size);
DESCRIPTION
The explain_setsockopt_or_die function is used to call the setsockopt(2) system call. On failure an explanation will be printed to stderr,
obtained from explain_setsockopt(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_setsockopt_or_die(fildes, level, name, data, data_size);
fildes The fildes, exactly as to be passed to the setsockopt(2) system call.
level The level, exactly as to be passed to the setsockopt(2) system call.
name The name, exactly as to be passed to the setsockopt(2) system call.
data The data, exactly as to be passed to the setsockopt(2) system call.
data_size
The data_size, exactly as to be passed to the setsockopt(2) system call.
Returns:
This function only returns on success. On failure, prints an explanation and exits.
SEE ALSO setsockopt(2)
get and set options on sockets
explain_setsockopt(3)
explain setsockopt(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2009 Peter Miller
explain_setsockopt_or_die(3)
Check Out this Related Man Page
explain_vsnprintf_or_die(3) Library Functions Manual explain_vsnprintf_or_die(3)NAME
explain_vsnprintf_or_die - formatted output conversion and report errors
SYNOPSIS
#include <libexplain/vsnprintf.h>
int explain_vsnprintf_or_die(char *data, size_t data_size, const char *format, va_list ap);
int explain_vsnprintf_on_error(char *data, size_t data_size, const char *format, va_list ap);
DESCRIPTION
The explain_vsnprintf_or_die function is used to call the vsnprintf(3) system call. On failure an explanation will be printed to stderr,
obtained from the explain_vsnprintf(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_vsnprintf_on_error function is used to call the vsnprintf(3) system call. On failure an explanation will be printed to stderr,
obtained from the explain_vsnprintf(3) function, but still returns to the caller.
data The data, exactly as to be passed to the vsnprintf(3) system call.
data_size
The data_size, exactly as to be passed to the vsnprintf(3) system call.
format The format, exactly as to be passed to the vsnprintf(3) system call.
ap The ap, exactly as to be passed to the vsnprintf(3) system call.
RETURN VALUE
The explain_vsnprintf_or_die function only returns on success, see vsnprintf(3) for more information. On failure, prints an explanation and
exits, it does not return.
The explain_vsnprintf_on_error function always returns the value return by the wrapped vsnprintf(3) system call.
EXAMPLE
The explain_vsnprintf_or_die function is intended to be used in a fashion similar to the following example:
int result = explain_vsnprintf_or_die(data, data_size, format, ap);
SEE ALSO vsnprintf(3)
formatted output conversion
explain_vsnprintf(3)
explain vsnprintf(3) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2010 Peter Miller
explain_vsnprintf_or_die(3)
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Hello all !
Could someone throw some light on whether there's a limit to the number of characters contained in the command string that is passed to the system() call in C.
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int sock;
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struct sockaddr_in servAddr;
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