ndhc/ifset.h

// Copyright 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
// SPDX-License-Identifier: MIT
#ifndef NJK_IFSET_H_
#define NJK_IFSET_H_
int perform_carrier(void);
int perform_ifup(void);
int perform_ip_subnet_bcast(const char *str_ipaddr,
                            const char *str_subnet,
                            const char *str_bcast);
int perform_router(const char *str, size_t len);
int perform_mtu(const char *str, size_t len);
#endif
Relicense as MIT. It's a lot more common than BSD 2-clause it is both compatible and nearly identical in effect. 2022-02-07 06:35:29 +05:30			`// Copyright 2004-2018 Nicholas J. Kain <njkain at gmail dot com>`
			`// SPDX-License-Identifier: MIT`
Merge ifchd into ndhc. Rather than function as entirely separate daemons, ndhc will fork off an ifchd child that it will communicate with via pipes rather than by connecting to a SO_PEERCRED AF_UNIX socket. The advantages include: 1. Simpler configuration. Much easier for users and packagers to set up. 2. Drastically less complex code for the ifch functionality. More code is removed than added, and the result is a lot less complex. 3. Potentially better security. The ifch can only service the parent ndhc process, and it is restricted to issuing modifications to the single interface that ndhc manages. 4. Less memory used on systems that allow overcommit. The downsides: 1. Possibly more memory used on systems that run multiple ndhcs and use strict commit limits. At the same time, use netlink rather than ioctls so that the interface ip, subnet, and broadcast address can be set simultaneously. This change reduces the netlink notification spam greatly. The current code builds but isn't yet complete. Subsequent commits will flesh things out and polish out some remaining issues. 2014-03-10 10:22:56 +05:30			`#ifndef NJK_IFSET_H_`
			`#define NJK_IFSET_H_`
Check link carrier via ifch and netlink instead of ioctl. Thus, ioctl can once again be removed from the ndhc seccomp whitelist. 2015-02-15 13:20:29 +05:30			`int perform_carrier(void);`
Functions don't need explicit extern linkage in headers in C99, as it is the default. Standardize on leaving out the extern keyword as it is less clutter. 2014-03-18 07:40:58 +05:30			`int perform_ifup(void);`
Replace mostly obsolete -[static 1] with reliable old *-. This notation originally had the sole advantage of implying that the pointer was non-NULL, but it has seen little use and now clang presents warnings about it in certain contexts. 2022-01-12 09:05:19 +05:30			`int perform_ip_subnet_bcast(const char *str_ipaddr,`
			`const char *str_subnet,`
If ifchd commands fail, propagate the failure back to ndhc. 2015-02-15 12:59:37 +05:30			`const char *str_bcast);`
Replace mostly obsolete -[static 1] with reliable old *-. This notation originally had the sole advantage of implying that the pointer was non-NULL, but it has seen little use and now clang presents warnings about it in certain contexts. 2022-01-12 09:05:19 +05:30			`int perform_router(const char *str, size_t len);`
If ifchd commands fail, propagate the failure back to ndhc. 2015-02-15 12:59:37 +05:30			`int perform_mtu(const char *str, size_t len);`
Initial commit. 2010-11-12 14:32:18 +05:30			`#endif`