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.Dd May 11, 2016 .Dt PROG_GET_CRED 3PROC .Os .Sh NAME .Nm proc_get_cred .Nd get process credentials .Sh SYNOPSIS .Lb libproc n libproc.h .Ft int .Fo proc_get_cred .Fa "pid_t proc" .Fa "prcred_t *credp" .Fa "int ngroups" .Fc .Sh DESCRIPTION The .Fn proc_get_cred function is a convenient way to read the /proc cred file for the process .Fa proc .

p Up to .Fa ngroups supplemental groups will be read and written into .Fa credp in addition to the normal information. If .Fa ngroups is more than one, than it is up to the caller to have allocated enough space for .Fa credp . Callers could allocate it, using an expression similar to:

p .Dl credp = malloc(sizeof (prcred_t) + (ngroups - 1) * sizeof (gid_t));

p The definition of the .Sy prcred_t structure may be found in .Xr proc 4 . .Sh RETURN VALUES Upon successful completion, the .Fn proc_get_cred function returns .Sy 0 . Otherwise, .Sy -1 is returned to indicate an error occurred. .Sh INTERFACE STABILITY .Sy Uncommitted .Sh MT-LEVEL .Sy MT-Safe .Sh SEE ALSO .Xr libproc 3LIB , .Xr proc 4