// SPDX-License-Identifier: ISC /* Linux half of the system-prompt host block (see sysinfo.h). */#include <sys/vfs.h> #include <stddef.h>#include <stdio.h>#include <stdint.h>#include <unistd.h> #include "sysinfo.h"#include "banned.h" uint64_tclm_cli_sysinfo_physmem(void){	long pages = sysconf(_SC_PHYS_PAGES);	long pagesz = sysconf(_SC_PAGESIZE); 	if (pages <= 0 || pagesz <= 0)		return 0;	return (uint64_t)pages * (uint64_t)pagesz;} const char *clm_cli_sysinfo_hints(void){	return "\n\nuserland notes for this host:\n"	       "- GNU userland: grep -E, grep -r --include, sed -i, and "	       "ps --forest all work.\n"	       "- Privileges come from sudo(1) or doas(1), whichever is "	       "installed.";} /* f_type magics from statfs(2); only the ones worth telling an agent * about, since a RAM-backed /tmp spends memory rather than disk. */voidclm_cli_sysinfo_fstype(const char *path, char *buf, size_t len){	struct statfs sfs;	const char *name = ""; 	if (statfs(path, &sfs) == 0) {		switch ((unsigned long)sfs.f_type) {		case 0x01021994UL:			name = "tmpfs";			break;		case 0x858458f6UL:			name = "ramfs";			break;		case 0xef53UL:			name = "ext";			break;		case 0x9123683eUL:			name = "btrfs";			break;		case 0x58465342UL:			name = "xfs";			break;		case 0x2fc12fc1UL:			name = "zfs";			break;		case 0x6969UL:			name = "nfs";			break;		case 0x794c7630UL:			name = "overlayfs";			break;		default:			break;		}	}	(void)snprintf(buf, len, "%s", name);}