Author: jtl Date: Tue Apr 14 15:27:24 2020 New Revision: 359921 URL: https://svnweb.freebsd.org/changeset/base/359921
Log: Make the path length of UNIX domain sockets specified by a #define. Also, add a comment describing the historical context for this length. Reviewed by: bz, jhb, kbowling (previous version) MFC after: 2 weeks Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D24272 Modified: head/sys/sys/un.h Modified: head/sys/sys/un.h ============================================================================== --- head/sys/sys/un.h Tue Apr 14 14:48:00 2020 (r359920) +++ head/sys/sys/un.h Tue Apr 14 15:27:24 2020 (r359921) @@ -44,12 +44,20 @@ typedef __sa_family_t sa_family_t; #endif /* + * Historically, (struct sockaddr) needed to fit inside an mbuf. + * For this reason, UNIX domain sockets were therefore limited to + * 104 bytes. While this limit is no longer necessary, it is kept for + * binary compatibility reasons. + */ +#define SUNPATHLEN 104 + +/* * Definitions for UNIX IPC domain. */ struct sockaddr_un { unsigned char sun_len; /* sockaddr len including null */ sa_family_t sun_family; /* AF_UNIX */ - char sun_path[104]; /* path name (gag) */ + char sun_path[SUNPATHLEN]; /* path name (gag) */ }; #if __BSD_VISIBLE _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
