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 PROG_GET_CRED 3PROC 16.Os 17.Sh NAME 18.Nm proc_get_cred 19.Nd get process credentials 20.Sh SYNOPSIS 21.Lb libproc 22.In libproc.h 23.Ft int 24.Fo proc_get_cred 25.Fa "pid_t proc" 26.Fa "prcred_t *credp" 27.Fa "int ngroups" 28.Fc 29.Sh DESCRIPTION 30The 31.Fn proc_get_cred 32function is a convenient way to read the /proc cred file for the process 33.Fa proc . 34.Pp 35Up to 36.Fa ngroups 37supplemental groups will be read and written into 38.Fa credp 39in addition to the normal information. 40If 41.Fa ngroups 42is more than one, than it is up to the caller to have allocated enough 43space for 44.Fa credp . 45Callers could allocate it, using an expression similar to: 46.Pp 47.Dl credp = malloc(sizeof (prcred_t) + (ngroups - 1) * sizeof (gid_t)); 48.Pp 49The definition of the 50.Sy prcred_t 51structure may be found in 52.Xr proc 4 . 53.Sh RETURN VALUES 54Upon successful completion, the 55.Fn proc_get_cred 56function returns 57.Sy 0 . 58Otherwise, 59.Sy -1 60is returned to indicate an error occurred. 61.Sh INTERFACE STABILITY 62.Sy Uncommitted 63.Sh MT-LEVEL 64.Sy MT-Safe 65.Sh SEE ALSO 66.Xr libproc 3LIB , 67.Xr proc 4 68