143051d27SRobert Mustacchi.\" 243051d27SRobert Mustacchi.\" This file and its contents are supplied under the terms of the 343051d27SRobert Mustacchi.\" Common Development and Distribution License ("CDDL"), version 1.0. 443051d27SRobert Mustacchi.\" You may only use this file in accordance with the terms of version 543051d27SRobert Mustacchi.\" 1.0 of the CDDL. 643051d27SRobert Mustacchi.\" 743051d27SRobert Mustacchi.\" A full copy of the text of the CDDL should have accompanied this 843051d27SRobert Mustacchi.\" source. A copy of the CDDL is also available via the Internet at 943051d27SRobert Mustacchi.\" http://www.illumos.org/license/CDDL. 1043051d27SRobert Mustacchi.\" 1143051d27SRobert Mustacchi.\" 1243051d27SRobert Mustacchi.\" Copyright 2015 Joyent, Inc. 1343051d27SRobert Mustacchi.\" 1443051d27SRobert Mustacchi.Dd May 11, 2016 1543051d27SRobert Mustacchi.Dt PSYSENTRY 3PROC 1643051d27SRobert Mustacchi.Os 1743051d27SRobert Mustacchi.Sh NAME 1843051d27SRobert Mustacchi.Nm Psysentry , 1943051d27SRobert Mustacchi.Nm Psysexit 2043051d27SRobert Mustacchi.Nd set system call entry and exit actions 21ab618543SJohn Levon.Sh LIBRARY 2243051d27SRobert Mustacchi.Lb libproc 23ab618543SJohn Levon.Sh SYNOPSIS 2443051d27SRobert Mustacchi.In libproc.h 2543051d27SRobert Mustacchi.Ft int 2643051d27SRobert Mustacchi.Fo Psysentry 2743051d27SRobert Mustacchi.Fa "struct ps_prochandle *P" 2843051d27SRobert Mustacchi.Fa "int which" 2943051d27SRobert Mustacchi.Fa "int stop" 3043051d27SRobert Mustacchi.Fc 3143051d27SRobert Mustacchi.Ft int 3243051d27SRobert Mustacchi.Fo Psysexit 3343051d27SRobert Mustacchi.Fa "struct ps_prochandle *P" 3443051d27SRobert Mustacchi.Fa "int which" 3543051d27SRobert Mustacchi.Fa "int stop" 3643051d27SRobert Mustacchi.Fc 3743051d27SRobert Mustacchi.Sh DESCRIPTION 3843051d27SRobert MustacchiThe 39b31ca922SChris Fraire.Fn Psysentry 4043051d27SRobert Mustacchiand 41b31ca922SChris Fraire.Fn Psysexit 4243051d27SRobert Mustacchifunctions controls what actions the process handle 4343051d27SRobert Mustacchi.Fa P 4443051d27SRobert Mustacchishould take upon executing a system call. 4543051d27SRobert Mustacchi.Pp 4643051d27SRobert MustacchiThe system allows a process to be stopped on both entry and exit of a 4772d3dbb9SYuri Pankovsystem call. 4872d3dbb9SYuri PankovFor information on the state of the process when it is stopped due to system 4972d3dbb9SYuri Pankovcall tracing, see the 5043051d27SRobert Mustacchi.Sy PCSENTRY 5143051d27SRobert Mustacchiand 5243051d27SRobert Mustacchi.Sy PCSEXIT 5343051d27SRobert Mustacchisections of 54*bbf21555SRichard Lowe.Xr proc 5 . 5543051d27SRobert Mustacchi.Pp 5643051d27SRobert MustacchiThe value of the 5743051d27SRobert Mustacchi.Fa stop 5843051d27SRobert Mustacchiparameter controls whether or not the system call listed in 5943051d27SRobert Mustacchi.Fa which 6072d3dbb9SYuri Pankovcauses the process to stop. 6172d3dbb9SYuri PankovA value of non-zero indicates the process should stop; 6272d3dbb9SYuri Pankova value of 0 indicates it should not. 6343051d27SRobert Mustacchi.Pp 6443051d27SRobert MustacchiThe value of 6543051d27SRobert Mustacchi.Fa which 6672d3dbb9SYuri Pankovindicates which system call the change applies to. 6772d3dbb9SYuri PankovA value of 0 applies to all system calls. 6872d3dbb9SYuri PankovNote, the system does not supply a stable mapping from system call names to 6972d3dbb9SYuri Pankovidentifiers. 7043051d27SRobert Mustacchi.Pp 7172d3dbb9SYuri PankovThese functions only apply to actively running processes. 7272d3dbb9SYuri PankovThey do not function on handles that refer to core files, zombie processes, 7372d3dbb9SYuri Pankovor ELF objects. 7443051d27SRobert Mustacchi.Sh RETURN VALUES 7543051d27SRobert MustacchiUpon successful completion, the 76b31ca922SChris Fraire.Fn Psysentry 7743051d27SRobert Mustacchiand 78b31ca922SChris Fraire.Fn Psysexit 7943051d27SRobert Mustacchifunctions return the previous disposition of the system call -- 8043051d27SRobert Mustacchi.Sy 0 8143051d27SRobert Mustacchiif it was not set to stop and 8243051d27SRobert Mustacchi.Sy 1 8343051d27SRobert Mustacchiif it was -- 8472d3dbb9SYuri Pankovand the system call state is updated. 8572d3dbb9SYuri PankovOtherwise, 8643051d27SRobert Mustacchi.Sy -1 8743051d27SRobert Mustacchiis returned, 8843051d27SRobert Mustacchi.Dv errno 8943051d27SRobert Mustacchiis updated with the error that occurred, and the system call state is 9043051d27SRobert Mustacchinot updated. 9143051d27SRobert Mustacchi.Sh ERRORS 9243051d27SRobert MustacchiThe 9343051d27SRobert Mustacchi.Fn Psysentry 9443051d27SRobert Mustacchiand 9543051d27SRobert Mustacchi.Fn Psysexit 9643051d27SRobert Mustacchifunctions will fail if: 9743051d27SRobert Mustacchi.Bl -tag -width Er 9843051d27SRobert Mustacchi.It Er EINVAL 9943051d27SRobert MustacchiThe value of 10043051d27SRobert Mustacchi.Fa which 10143051d27SRobert Mustacchiis invalid, e.g. it is less than zero or greater than the largest defined 10243051d27SRobert Mustacchisystem call. 10343051d27SRobert Mustacchi.It Er ENOENT 10443051d27SRobert MustacchiThe handle 10543051d27SRobert Mustacchi.Fa P 10643051d27SRobert Mustacchirefers to a process that is a zombie, a core file, or an ELF object. 10743051d27SRobert Mustacchi.El 10843051d27SRobert Mustacchi.Sh INTERFACE STABILITY 10943051d27SRobert Mustacchi.Sy Uncommitted 11043051d27SRobert Mustacchi.Pp 11143051d27SRobert MustacchiNote, while the 11243051d27SRobert Mustacchi.Fn Psysentry 11343051d27SRobert Mustacchiand 11443051d27SRobert Mustacchi.Fn Psysexit 11543051d27SRobert Mustacchifunctions are uncommitted, the mapping of system calls to system call 11643051d27SRobert Mustacchinumbers is 11743051d27SRobert Mustacchi.Sy Not-an-Interface 11843051d27SRobert Mustacchiand may change at any time. 11943051d27SRobert Mustacchi.Sh MT-LEVEL 12043051d27SRobert MustacchiSee 12143051d27SRobert Mustacchi.Sy LOCKING 12243051d27SRobert Mustacchiin 12343051d27SRobert Mustacchi.Xr libproc 3LIB . 12443051d27SRobert Mustacchi.Sh SEE ALSO 12543051d27SRobert Mustacchi.Xr libproc 3LIB , 126*bbf21555SRichard Lowe.Xr proc 5 , 127*bbf21555SRichard Lowe.Xr attributes 7 128