19e252baeb
- DTrace scripts to check for errors, performance, ... they serve mostly as examples of what you can do with the static probe;s with moderate load the scripts may be overwhelmed, excessive lock-tracing may influence program behavior (see the last design decission) Design decissions: - use "linuxulator" as the provider for the native bitsize; add the bitsize for the non-native emulation (e.g. "linuxuator32" on amd64) - Add probes only for locks which are acquired in one function and released in another function. Locks which are aquired and released in the same function should be easy to pair in the code, inter-function locking is more easy to verify in DTrace. - Probes for locks should be fired after locking and before releasing to prevent races (to provide data/function stability in DTrace, see the man-page of "dtrace -v ..." and the corresponding DTrace docs).
142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
/*-
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* Copyright (c) 1994 Christos Zoulas
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* Copyright (c) 1995 Frank van der Linden
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* Copyright (c) 1995 Scott Bartram
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
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* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
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* $FreeBSD$
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*/
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#ifndef _LINUX_UTIL_H_
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#define _LINUX_UTIL_H_
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <machine/vmparam.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/syslog.h>
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#include <sys/cdefs.h>
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#include <sys/uio.h>
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extern const char linux_emul_path[];
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int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
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#define LCONVPATH_AT(td, upath, pathp, i, dfd) \
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do { \
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int _error; \
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\
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_error = linux_emul_convpath(td, upath, UIO_USERSPACE, \
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pathp, i, dfd); \
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if (*(pathp) == NULL) \
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return (_error); \
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} while (0)
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#define LCONVPATH(td, upath, pathp, i) \
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LCONVPATH_AT(td, upath, pathp, i, AT_FDCWD)
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#define LCONVPATHEXIST(td, upath, pathp) LCONVPATH(td, upath, pathp, 0)
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#define LCONVPATHEXIST_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 0, dfd)
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#define LCONVPATHCREAT(td, upath, pathp) LCONVPATH(td, upath, pathp, 1)
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#define LCONVPATHCREAT_AT(td, upath, pathp, dfd) LCONVPATH_AT(td, upath, pathp, 1, dfd)
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#define LFREEPATH(path) free(path, M_TEMP)
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#define DUMMY(s) \
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LIN_SDT_PROBE_DEFINE0(dummy, s, entry); \
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LIN_SDT_PROBE_DEFINE0(dummy, s, not_implemented); \
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LIN_SDT_PROBE_DEFINE1(dummy, s, return, "int"); \
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int \
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linux_ ## s(struct thread *td, struct linux_ ## s ## _args *args) \
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{ \
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static pid_t pid; \
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\
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LIN_SDT_PROBE0(dummy, s, entry); \
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\
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if (pid != td->td_proc->p_pid) { \
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linux_msg(td, "syscall %s not implemented", #s); \
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LIN_SDT_PROBE0(dummy, s, not_implemented); \
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pid = td->td_proc->p_pid; \
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}; \
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\
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LIN_SDT_PROBE1(dummy, s, return, ENOSYS); \
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return (ENOSYS); \
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} \
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struct __hack
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void linux_msg(const struct thread *td, const char *fmt, ...)
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__printflike(2, 3);
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struct linux_device_handler {
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char *bsd_driver_name;
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char *linux_driver_name;
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char *bsd_device_name;
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char *linux_device_name;
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int linux_major;
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int linux_minor;
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int linux_char_device;
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};
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int linux_device_register_handler(struct linux_device_handler *h);
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int linux_device_unregister_handler(struct linux_device_handler *h);
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char *linux_driver_get_name_dev(device_t dev);
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int linux_driver_get_major_minor(const char *node, int *major, int *minor);
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char *linux_get_char_devices(void);
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void linux_free_get_char_devices(char *string);
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#if defined(KTR)
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#define KTR_LINUX KTR_SUBSYS
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#define LINUX_CTRFMT(nm, fmt) #nm"("fmt")"
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#define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6) do { \
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if (ldebug(f)) \
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CTR6(KTR_LINUX, LINUX_CTRFMT(f, m), \
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p1, p2, p3, p4, p5, p6); \
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} while (0)
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#define LINUX_CTR(f) LINUX_CTR6(f, "", 0, 0, 0, 0, 0, 0)
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#define LINUX_CTR0(f, m) LINUX_CTR6(f, m, 0, 0, 0, 0, 0, 0)
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#define LINUX_CTR1(f, m, p1) LINUX_CTR6(f, m, p1, 0, 0, 0, 0, 0)
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#define LINUX_CTR2(f, m, p1, p2) LINUX_CTR6(f, m, p1, p2, 0, 0, 0, 0)
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#define LINUX_CTR3(f, m, p1, p2, p3) LINUX_CTR6(f, m, p1, p2, p3, 0, 0, 0)
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#define LINUX_CTR4(f, m, p1, p2, p3, p4) LINUX_CTR6(f, m, p1, p2, p3, p4, 0, 0)
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#define LINUX_CTR5(f, m, p1, p2, p3, p4, p5) LINUX_CTR6(f, m, p1, p2, p3, p4, p5, 0)
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#else
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#define LINUX_CTR(f)
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#define LINUX_CTR0(f, m)
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#define LINUX_CTR1(f, m, p1)
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#define LINUX_CTR2(f, m, p1, p2)
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#define LINUX_CTR3(f, m, p1, p2, p3)
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#define LINUX_CTR4(f, m, p1, p2, p3, p4)
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#define LINUX_CTR5(f, m, p1, p2, p3, p4, p5)
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#define LINUX_CTR6(f, m, p1, p2, p3, p4, p5, p6)
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#endif
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#endif /* !_LINUX_UTIL_H_ */
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