From 328f784cf0e48c353e34712e180a0adfa0c0bdf7 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sun, 4 Sep 2005 23:43:38 +0000 Subject: verbose rlimit LKM --- gsrlimit/Makefile | 6 ++++ gsrlimit/gsrlimit.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 gsrlimit/Makefile create mode 100644 gsrlimit/gsrlimit.c diff --git a/gsrlimit/Makefile b/gsrlimit/Makefile new file mode 100644 index 0000000..076bae9 --- /dev/null +++ b/gsrlimit/Makefile @@ -0,0 +1,6 @@ +# $Id$ + +LKM= gsrlimit +NOMAN= noman + +.include diff --git a/gsrlimit/gsrlimit.c b/gsrlimit/gsrlimit.c new file mode 100644 index 0000000..1f1bf56 --- /dev/null +++ b/gsrlimit/gsrlimit.c @@ -0,0 +1,102 @@ +/* $Id$ */ +/* + * Copyright (c) 2005 Dimitri Sokolyuk + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +MOD_MISC("gsrlimit"); + +char *gsrlimit_name[] = { + "cpu time in milliseconds", + "maximum file size", + "data size", + "stack size", + "core file size", + "resident set size", + "locked-in-memory address space", + "number of processes", + "number of open files", + NULL +}; + +int +my_getrlimit(struct proc *p, void *v, register_t *retval) +{ + register struct sys_getrlimit_args *uap = v; + int ret; + + ret = sys_getrlimit(p, v, retval); + + printf("getrlimit: %s (%lu/%lu)\n", + SCARG(uap, which) >= RLIM_NLIMITS ? "unknown" : gsrlimit_name[SCARG(uap, which)], + SCARG(uap, rlp)->rlim_cur, SCARG(uap, rlp)->rlim_max); + + return (ret); +} + +int +my_setrlimit(struct proc *p, void *v, register_t *retval) +{ + register struct sys_getrlimit_args *uap = v; + int ret; + + ret = sys_setrlimit(p, v, retval); + + printf("setrlimit: %s (%lu/%lu)\n", + SCARG(uap, which) >= RLIM_NLIMITS ? "unknown" : gsrlimit_name[SCARG(uap, which)], + SCARG(uap, rlp)->rlim_cur, SCARG(uap, rlp)->rlim_max); + + return (ret); +} + +int +gsrlimit_handler(struct lkm_table *lkmtp, int cmd) +{ + switch (cmd) { + case LKM_E_LOAD: + printf("fake getrlimit/setrlimit\n"); + sysent[SYS_getrlimit].sy_call = my_getrlimit; + sysent[SYS_setrlimit].sy_call = my_setrlimit; + break; + + case LKM_E_UNLOAD: + printf("restore getrlimit/setrlimit\n"); + sysent[SYS_getrlimit].sy_call = sys_getrlimit; + sysent[SYS_setrlimit].sy_call = sys_setrlimit; + break; + } + + return (0); +} + +int +gsrlimit(struct lkm_table *lkmtp, int cmd, int ver) +{ + DISPATCH(lkmtp, cmd, ver, gsrlimit_handler, gsrlimit_handler, lkm_nofunc); +} -- cgit v1.2.3