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 November 27, 2023 15.Dt PROG_GET_CRED 3PROC 16.Os 17.Sh NAME 18.Nm proc_get_cred 19.Nd get process credentials 20.Sh LIBRARY 21.Lb libproc 22.Sh SYNOPSIS 23.In libproc.h 24.Ft int 25.Fo proc_get_cred 26.Fa "pid_t proc" 27.Fa "prcred_t *credp" 28.Fa "int ngroups" 29.Fc 30.Sh DESCRIPTION 31The 32.Fn proc_get_cred 33function is a convenient way to read the /proc cred file for the process 34.Fa proc . 35.Pp 36Up to 37.Fa ngroups 38supplemental groups will be read and written into 39.Fa credp 40in addition to the normal information. 41If 42.Fa ngroups 43is more than one, than it is up to the caller to have allocated enough 44space for 45.Fa credp . 46Callers could allocate it, using an expression similar to: 47.Pp 48.Dl credp = malloc(sizeof (prcred_t) + (ngroups - 1) * sizeof (gid_t)); 49.Pp 50The definition of the 51.Sy prcred_t 52structure may be found in 53.Xr proc 5 . 54.Sh RETURN VALUES 55Upon successful completion, the 56.Fn proc_get_cred 57function returns 58.Sy 0 . 59Otherwise, 60.Sy -1 61is returned to indicate an error occurred. 62.Sh INTERFACE STABILITY 63.Sy Uncommitted 64.Sh MT-LEVEL 65.Sy MT-Safe 66.Sh SEE ALSO 67.Xr libproc 3LIB , 68.Xr proc 5 69