All rights reserved.
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.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
$FreeBSD: releng/10.2/share/man/man9/pget.9 265928 2014-05-12 19:42:16Z pluknet $
.Dd May 3, 2014 .Dt PGET 9 .Os .Sh NAME .Nm pget .Nd locate a process by number .Sh SYNOPSIS n sys/param.h n sys/proc.h .Ft int .Fn pget "pid_t pid" "int flags" "struct proc **pp" .Sh DESCRIPTION This function takes a .Fa pid as its argument, which can be either a process or thread id, and fills a pointer to the .Vt proc structure in .Fa *pp . In the latter case, a process owning the specified thread is looked for. The operation is performed by invoking the .Xr pfind 9 function. The found process is returned locked. For the .Dv PGET_HOLD case, it is returned unlocked (but held). The .Fn pget function can perform additional manipulations, depending on a .Fa flags argument.
p The .Fa flags argument is the logical OR of some subset of: l -tag -width ".Dv PGET_NOTINEXEC" t Dv PGET_HOLD If set, the found process will be held and unlocked. t Dv PGET_CANSEE If set, the found process will be checked for its visibility. See .Xr p_cansee 9 . t Dv PGET_CANDEBUG If set, the found process will be checked for its debuggability. See .Xr p_candebug 9 . t Dv PGET_ISCURRENT If set, the found process will be checked that it matches the current process context. t Dv PGET_NOTWEXIT If set, the found process will be checked that it does not have the process flag .Dv P_WEXIT set. t Dv PGET_NOTINEXEC If set, the found process will be checked that it does not have the process flag .Dv P_INEXEC set. t Dv PGET_NOTID If set, .Fa pid is not assumed as a thread id for values larger than .Dv PID_MAX . t Dv PGET_WANTREAD If set, the found process will be checked that the caller may get a read access to its structure. A shorthand for
q Dv PGET_HOLD | PGET_CANDEBUG | PGET_NOTWEXIT . .El .Sh RETURN VALUES If the process is found in the specified way, then zero is returned, otherwise an appropriate error code is returned. .Sh SEE ALSO .Xr p_candebug 9 , .Xr p_cansee 9 , .Xr pfind 9