29 		return pr_perror("fopen(/proc/self/maps)");  in get_file_dev_and_inode()
38 			return pr_perror("unable to parse: %s", buf);  in get_file_dev_and_inode()
56 		return pr_perror("fsopen(tmpfs)");  in ovl_mount()
59 		return pr_perror("FSCONFIG_CMD_CREATE");  in ovl_mount()
63 		return pr_perror("fsmount");  in ovl_mount()
69 		return pr_perror("move_mount");  in ovl_mount()
75 		return pr_perror("mkdir");  in ovl_mount()
79 		return pr_perror("fsopen(overlay)");  in ovl_mount()
84 		return pr_perror("fsconfig");  in ovl_mount()
86 		return pr_perror("fsconfig");  in ovl_mount()
89 		return pr_perror("fsmount");  in ovl_mount()
110 		return pr_perror("openat");  in test()
114 		return pr_perror("mmap");  in test()
119 		return pr_perror("statx");  in test()
149 		pr_perror("mount");  in main()