diff options
| author | Brooks Davis <brooks@FreeBSD.org> | 2010-01-12 07:49:34 +0000 |
|---|---|---|
| committer | Brooks Davis <brooks@FreeBSD.org> | 2010-01-12 07:49:34 +0000 |
| commit | 412f9500e2fd3ae0c7546fefb5823bc207139213 (patch) | |
| tree | de91cf4c019f8024f0f1e02debf82cece77d60f2 /sys/kern/subr_param.c | |
| parent | 7bf27b2dde45e09ea60028de94ccabdc8bd1d1d3 (diff) | |
Notes
Diffstat (limited to 'sys/kern/subr_param.c')
| -rw-r--r-- | sys/kern/subr_param.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/kern/subr_param.c b/sys/kern/subr_param.c index 6113b6397321..fcd8131d4b08 100644 --- a/sys/kern/subr_param.c +++ b/sys/kern/subr_param.c @@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$"); #include "opt_param.h" #include "opt_maxusers.h" +#include <sys/limits.h> #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> @@ -88,6 +89,7 @@ int maxfiles; /* sys. wide open files limit */ int maxfilesperproc; /* per-proc open files limit */ int ncallout; /* maximum # of timer events */ int nbuf; +int ngroups_max; /* max # groups per process */ int nswbuf; long maxswzone; /* max swmeta KVA storage */ long maxbcache; /* max buffer cache KVA storage */ @@ -228,6 +230,18 @@ init_param1(void) TUNABLE_ULONG_FETCH("kern.maxssiz", &maxssiz); sgrowsiz = SGROWSIZ; TUNABLE_ULONG_FETCH("kern.sgrowsiz", &sgrowsiz); + + /* + * Let the administrator set {NGROUPS_MAX}, but disallow values + * less than NGROUPS_MAX which would violate POSIX.1-2008 or + * greater than INT_MAX-1 which would result in overflow. + */ + ngroups_max = NGROUPS_MAX; + TUNABLE_INT_FETCH("kern.ngroups", &ngroups_max); + if (ngroups_max < NGROUPS_MAX) + ngroups_max = NGROUPS_MAX; + if (ngroups_max > INT_MAX - 1) + ngroups_max = INT_MAX - 1; } /* |