.TH LLAPI_PROJECT_OPEN 3 2025-07-01 "Lustre User API" "Lustre Library Functions"
.SH NAME
llapi_project_open \- open project mapping file
.SH SYNOPSIS
.nf
.B #include <lustre/lustreapi.h>
.sp
.BI "int llapi_project_open(const char *" name ", struct ll_project_handle *" hdl ",
.BI "                       char *" mode );
.fi
.SH DESCRIPTION
The
.B llapi_project_open()
function opens the file specified by
.BR name .
if
.I name
is NULL then it will use the path in
.BR LIBLUSTREAPI_PROJECT ,
if available, and will default back to
.B /etc/projid
otherwise.
.SH RETURN VALUES
.TP
.B 0
on success
.TP
-ve
error code on failure and sets errno appropriately.
.SH ERRORS
.TP 15
.B -EINVAL
if
.I name
is not NULL, but begins with '\0'.
.TP
.B -ENOMEM
if it fails to allocate enough space for the new
.BR ll_project_handle .
.SH AVAILABILITY
.B llapi_project_open()
is part of the
.BR lustre (7)
user application interface library since release 2.17.0
.\" Added in commit v2_16_55-17-g75c6d5636d
.SH SEE ALSO
.BR lfs_project (1),
.BR llapi_project_close (3),
.BR llapi_project_fgetnam (3),
.BR llapi_project_fgetprjid (3),
.BR llapi_project_get (3),
.BR llapi_project_getnam (3),
.BR llapi_project_getprjid (3),
.BR llapi_project_put (3),
.BR projid (5),
.BR lustreapi (7)