1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" 12.\" Copyright 2015 Joyent, Inc. 13.\" 14.Dd May 11, 2016 15.Dt PSETRUN 3PROC 16.Os 17.Sh NAME 18.Nm Psetrun , 19.Nm Lsetrun 20.Nd run a stopped process or thread 21.Sh LIBRARY 22.Lb libproc 23.Sh SYNOPSIS 24.In libproc.h 25.Ft int 26.Fo Psetrun 27.Fa "struct ps_prochandle *P" 28.Fa "int sig" 29.Fa "int flags" 30.Fc 31.Ft int 32.Fo Lsetrun 33.Fa "struct ps_lwphandle *L" 34.Fa "int sig" 35.Fa "int flags" 36.Fc 37.Sh DESCRIPTION 38The 39.Fn Psetrun 40function resumes the stopped process handle 41.Fa P 42and transitions the process to running. 43If 44.Fa sig 45is non-zero, then the 46.Fn Psetrun 47function causes the signal to be delivered. 48See 49.Xr signal.h 3HEAD 50for a list of valid signal identifiers. 51.Pp 52The 53.Fa flags 54member modifies the behavior of the resumed handle. 55The following values may be combined by a bitwise-inclusive-OR: 56.Bl -tag -width Dv -offset indent 57.It Dv PRCSIG 58Clears the current signal, if any. 59.It Dv PRCFAULT 60Clears the current fault, if any. 61.It Dv PRSTEP 62Indicates that the thread should single-step over the next machine 63instruction and upon completion, inject a trap. 64For the specific mechanics of single-stepping and what traps or signals will be 65injected, see the 66.Sy PRSTEP 67section of 68.Xr proc 5 . 69.It Dv PRSABORT 70Indicates that the thread should abort the system call that it is 71currently executing. 72This is only valid if the thread is stopped because it is asleep or right before 73a system call. 74This will cause the system call to return 75.Er EINTR . 76.El 77.Pp 78If 79both 80.Dv PRCSIG 81is specified and 82.Fa sig 83is non-zero, then the 84.Dv PRCSIG 85request takes priority, and it will be treated as though 86.Fa sig 87was passed the argument 88.Sy 0 . 89.Pp 90When the process is resumed all extent tracing flags and register 91changes will be synchronized with the process. 92For more information on resuming a thread see the 93.Sy PCRUN 94section in 95.Xr proc 5 . 96.Pp 97Note, the 98.Fn Psetrun 99function is only valid for active processes. 100It will fail on process handles that refer to core files, zombie processes, and 101ELF objects. 102.Pp 103The 104.Fn Lsetrun 105function is equivalent to the 106.Fn Psetrun 107function, except rather than operating on a process it operates on a 108thread. 109.Fn Lsetrun 110causes the specified thread, 111.Fa L , 112to resume execution. 113Whereas 114.Fn Psetrun 115causes all threads in the process to resume. 116.Sh RETURN VALUES 117Upon successful completion, the 118.Fn Psetrun 119and 120.Fn Lsetrun 121functions return 122.Sy 0 . 123Otherwise, 124.Sy -1 125is returned and 126.Sy errno 127is set to indicate the error. 128.Sh ERRORS 129For a full list of possible errors see the 130.Sy DIAGNOSTICS 131section in 132.Xr proc 5 . 133.Pp 134The 135.Fn Psetrun 136and 137.Fn Lsetrun 138functions will fail if: 139.Bl -tag -width Er 140.It Er EBUSY 141The process handle 142.Fa P 143is not currently stopped or it is not stopped due to an event of 144interest, a directed stop, or it is asleep in a system call. 145.El 146.Sh INTERFACE STABILITY 147.Sy Uncommitted 148.Sh MT-LEVEL 149See 150.Sy LOCKING 151in 152.Xr libproc 3LIB . 153.Sh SEE ALSO 154.Xr signal.h 3HEAD , 155.Xr libproc 3LIB , 156.Xr Pstatus 3PROC , 157.Xr proc 5 158