src/lib/libc/net/rcmd.c, branch releng/12.4

MFC r357575:

2020-02-12T15:51:29Z

Improve validation of the sockaddr length in iruserok_sa(). PR: 243747

The source strings are from the password database which guarantees

2018-01-06T12:46:04Z

that the data going into it is sane. Out of an abundance of caution, limit the string copies to prevent an overflow. CID: 1019035

General further adoption of SPDX licensing ID tags.

2017-11-20T19:49:47Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

libc: replace 0 with NULL for pointers.

2016-04-10T19:33:58Z

While here also cleanup some surrounding code; particularly drop some malloc() casts. Found with devel/coccinelle. Reviewed by: bde (previous version - all new bugs are mine)

Use ANSI C prototypes. Eliminates -Wold-style-definition warnings.

2015-09-20T21:21:17Z

Switch libc from using _sig{procmask,action,suspend} symbols, which

2015-08-29T14:25:01Z

are aliases for the syscall stubs and are plt-interposed, to the libc-private aliases of internally interposed sigprocmask() etc. Since e.g. _sigaction is not interposed by libthr, calling signal() removes thr_sighandler() from the handler slot etc. The result was breaking signal semantic and rtld locking. The added __libc_sigprocmask and other symbols are hidden, they are not exported and cannot be called through PLT. The setjmp/longjmp functions for x86 were changed to use direct calls, and since PIC_PROLOGUE only needed for functional PLT indirection on i386, it is removed as well. The PowerPC bug of calling the syscall directly in the setjmp/longjmp implementation is kept as is. Reported by: Pete French Tested by: Michiel Boland Reviewed by: jilles (previous version) Sponsored by: The FreeBSD Foundation MFC after: 1 week

libc: Make various internal file descriptors from fopen() close-on-exec.

2013-08-23T13:59:47Z

Per Regents of the University of Calfornia letter, remove advertising

2007-01-09T00:28:16Z

clause. # If I've done so improperly on a file, please let me know.

NI_WITHSCOPEID cleanup. Neither RFC 2553 nor RFC 3493 defines

2005-05-13T16:31:11Z

NI_WITHSCOPEID, and our getaddrinfo(3) does nothing special for it, now.