From: Stephen Kitt Date: Fri, 15 May 2020 16:02:22 +0000 (+0200) Subject: docs: sysctl/kernel: document ngroups_max X-Git-Tag: v5.8-rc1~211^2~27 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f4c33063ad713e3a5b63002cf8362846e78bd71;p=thirdparty%2Flinux.git docs: sysctl/kernel: document ngroups_max This is a read-only export of NGROUPS_MAX, so this patch also changes the declarations in kernel/sysctl.c to const. Signed-off-by: Stephen Kitt Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20200515160222.7994-1-steve@sk2.org Signed-off-by: Jonathan Corbet --- diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index eb6bc9cc03186..6b313b6d42d56 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -517,6 +517,15 @@ Notes: successful IPC object allocation. If an IPC object allocation syscall fails, it is undefined if the value remains unmodified or is reset to -1. + +ngroups_max +=========== + +Maximum number of supplementary groups, _i.e._ the maximum size which +``setgroups`` will accept. Exports ``NGROUPS_MAX`` from the kernel. + + + nmi_watchdog ============ diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 8a176d8727a3a..2ba9f449d2737 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -146,7 +146,7 @@ static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; static int maxolduid = 65535; static int minolduid; -static int ngroups_max = NGROUPS_MAX; +static const int ngroups_max = NGROUPS_MAX; static const int cap_last_cap = CAP_LAST_CAP; /* @@ -883,7 +883,7 @@ static struct ctl_table kern_table[] = { #endif { .procname = "ngroups_max", - .data = &ngroups_max, + .data = (void *)&ngroups_max, .maxlen = sizeof (int), .mode = 0444, .proc_handler = proc_dointvec,