kvm_nlist.3 revision 112539
Copyright (c) 1992, 1993
The Regents of the University of California. All rights reserved.
This code is derived from software developed by the Computer Systems
Engineering group at Lawrence Berkeley Laboratory under DARPA contract
BG 91-66 and contributed to Berkeley.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
@(#)kvm_nlist.3 8.1 (Berkeley) 6/4/93
$FreeBSD: head/lib/libkvm/kvm_nlist.3 112539 2003-03-24 15:58:53Z charnier $
.Dd June 4, 1993 .Dt KVM_NLIST 3 .Os .Sh NAME .Nm kvm_nlist .Nd retrieve symbol table names from a kernel image .Sh LIBRARY .Lb libkvm .Sh SYNOPSIS n kvm.h n nlist.h .Ft int .Fn kvm_nlist "kvm_t *kd" "struct nlist *nl" .Sh DESCRIPTION The .Fn kvm_nlist function retrieves the symbol table entries indicated by the name list argument .Fa nl . This argument points to an array of nlist structures, terminated by an entry whose n_name field is .Dv NULL (see .Xr nlist 3 ) . Each symbol is looked up using the n_name field, and if found, the corresponding n_type and n_value fields are filled in. These fields are set to 0 if the symbol is not found.
The Regents of the University of California. All rights reserved.
This code is derived from software developed by the Computer Systems
Engineering group at Lawrence Berkeley Laboratory under DARPA contract
BG 91-66 and contributed to Berkeley.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
@(#)kvm_nlist.3 8.1 (Berkeley) 6/4/93
$FreeBSD: head/lib/libkvm/kvm_nlist.3 112539 2003-03-24 15:58:53Z charnier $
.Dd June 4, 1993 .Dt KVM_NLIST 3 .Os .Sh NAME .Nm kvm_nlist .Nd retrieve symbol table names from a kernel image .Sh LIBRARY .Lb libkvm .Sh SYNOPSIS n kvm.h n nlist.h .Ft int .Fn kvm_nlist "kvm_t *kd" "struct nlist *nl" .Sh DESCRIPTION The .Fn kvm_nlist function retrieves the symbol table entries indicated by the name list argument .Fa nl . This argument points to an array of nlist structures, terminated by an entry whose n_name field is .Dv NULL (see .Xr nlist 3 ) . Each symbol is looked up using the n_name field, and if found, the corresponding n_type and n_value fields are filled in. These fields are set to 0 if the symbol is not found.
p The .Xr kldsym 2 system call is used to locate the symbol. This is a less than perfect emulation of the nlist values but has the advantage of being aware of kernel modules and is reasonably fast. .Sh RETURN VALUES The .Fn kvm_nlist function returns the number of invalid entries found. If the kernel symbol table was unreadable, -1 is returned. .Sh SEE ALSO .Xr kldsym 2 , .Xr kvm 3 , .Xr kvm_close 3 , .Xr kvm_getargv 3 , .Xr kvm_getenvv 3 , .Xr kvm_geterr 3 , .Xr kvm_getprocs 3 , .Xr kvm_open 3 , .Xr kvm_openfiles 3 , .Xr kvm_read 3 , .Xr kvm_write 3