diff options
Diffstat (limited to 'lib/libc/sys/kenv.2')
| -rw-r--r-- | lib/libc/sys/kenv.2 | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/lib/libc/sys/kenv.2 b/lib/libc/sys/kenv.2 index 06f708170a2f..a1f994569111 100644 --- a/lib/libc/sys/kenv.2 +++ b/lib/libc/sys/kenv.2 @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd February 20, 2017 +.Dd June 20, 2021 .Dt KENV 2 .Os .Sh NAME @@ -49,7 +49,7 @@ the kernel environment. The .Fa action argument can be one of the following: -.Bl -tag -width ".Dv KENV_UNSET" +.Bl -tag -width ".Dv KENV_DUMP_LOADER" .It Dv KENV_GET Get the .Fa value @@ -90,7 +90,7 @@ and arguments are ignored. This option is only available to the superuser. .It Dv KENV_DUMP -Dump as much of the kernel environment as will fit in +Dump as much of the dynamic kernel environment as will fit in .Fa value , whose size is given in .Fa len . @@ -103,6 +103,18 @@ will return the number of bytes required to copy out the entire environment. The .Fa name is ignored. +.It Dv KENV_DUMP_LOADER +Dump the static environment provided by +.Xr loader 8 , +with semantics identical to +.Dv KENV_DUMP . +Duplicate and malformed variables originally present in this environment are +discarded by the kernel and will not appear in the output. +.It Dv KENV_DUMP_STATIC +Dump the static environment defined by the kernel +.Xr config 5 . +The semantics are identical to +.Dv KENV_DUMP_LOADER . .El .Sh RETURN VALUES The @@ -142,6 +154,12 @@ for a .Dv KENV_GET or .Dv KENV_UNSET . +.It Bq Er ENOENT +The requested environment is not available for a +.Dv KENV_DUMP_LOADER +or +.Dv KENV_DUMP_STATIC . +The kernel is configured to destroy these environments by default. .It Bq Er EPERM A user other than the superuser attempted to set or unset a kernel environment variable. |