[LU-16786] Replace open call to WANT_FD with llapi_root_path_open()

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Assignee: Arshad Hussain
• Reporter: Arshad Hussain

Description

Replace open call to WANT_FD with newly added API llapi_root_path_open()

Example: A call to WANT_FD like below

if (path_or_device[0] == '/')
        rc = get_root_path(WANT_FD, NULL, &mnt_fd,
                           (char *)path_or_device, -1, NULL, NULL);
else
        rc = get_root_path(WANT_FD, (char *)path_or_device,
                   &mnt_fd, NULL, -1, NULL, NULL);

Will get replace by llapi_root_path_open()

rc = llapi_root_path_open((char *)path_or_device, &mnt_fd);

The changes are done under:

lustre/utils/liblustreapi_fid.c
lustre/utils/liblustreapi_hsm.c
lustre/utils/liblustreapi_pcc.c