Date: Fri, 17 Jun 2022 19:39:02 GMT From: Dmitry Chagin <dchagin@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: c43c6efaee52 - stable/13 - [linprocfs] add sys/kernel/random/boot_id Message-ID: <202206171939.25HJd2RV015480@gitrepo.freebsd.org>
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The branch stable/13 has been updated by dchagin: URL: https://cgit.FreeBSD.org/src/commit/?id=c43c6efaee52465c1076de3f2ba2d3aef56c5bb7 commit c43c6efaee52465c1076de3f2ba2d3aef56c5bb7 Author: Fernando Apesteguía <fernape@FreeBSD.org> AuthorDate: 2022-03-08 14:19:53 +0000 Commit: Dmitry Chagin <dchagin@FreeBSD.org> CommitDate: 2022-06-17 19:33:50 +0000 [linprocfs] add sys/kernel/random/boot_id This file holds a UUID that is invariant for every boot. In our case, it is invariant per mount. PR: 262369 Reported by: sodynet1@gmail.com Approved by: dchagin@ Differential Revision: https://reviews.freebsd.org/D34860 (cherry picked from commit 0f2041a5b03259a8a7b20ffc98e34884cc5590b3) --- sys/compat/linprocfs/linprocfs.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c index 97ae357a229e..e1cc3289ce99 100644 --- a/sys/compat/linprocfs/linprocfs.c +++ b/sys/compat/linprocfs/linprocfs.c @@ -1887,6 +1887,24 @@ linprocfs_douuid(PFS_FILL_ARGS) return(0); } +/* + * Filler function for proc/sys/kernel/random/boot_id + */ +static int +linprocfs_doboot_id(PFS_FILL_ARGS) +{ + static bool firstboot = 1; + static struct uuid uuid; + + if (firstboot) { + kern_uuidgen(&uuid, 1); + firstboot = 0; + } + sbuf_printf_uuid(sb, &uuid); + sbuf_printf(sb, "\n"); + return(0); +} + /* * Filler function for proc/pid/auxv */ @@ -2097,6 +2115,8 @@ linprocfs_init(PFS_INIT_ARGS) dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0); pfs_create_file(dir, "uuid", &linprocfs_douuid, NULL, NULL, NULL, PFS_RD); + pfs_create_file(dir, "boot_id", &linprocfs_doboot_id, + NULL, NULL, NULL, PFS_RD); /* /proc/sys/vm/.... */ dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0);
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