archie/prospero/lib/pfs/stat.c

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2024-05-27 16:13:40 +02:00
/*
* Copyright (c) 1991-1994 by the University of Southern California
*
* For copying and distribution information, please see the file
* <usc-license.h>.
*/
#include <usc-license.h>
/* Stuff that handles stat, scrounged from other places */
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <pfs.h> /* for prototypes for these functions */
/* Stat and get a modification time. Returns 0 upon failure. */
extern time_t
mtime(const char native_dirname[])
{
struct stat st_buf;
if(stat(native_dirname, &st_buf) == 0)
return st_buf.st_mtime;
else
return 0;
}
/* Is it a directory? 1 = yes, 0 = no, -1 = failure? */
extern int
is_dir(const char native_filename[])
{
struct stat st_buf;
if(stat(native_filename, &st_buf) == 0)
return S_ISDIR(st_buf.st_mode) ? 1 : 0;
else
return -1;
}
/* Return age of file in seconds -1 on failure*/
int
stat_age(const char *path) {
time_t then;
return ((then = mtime(path)) ? time((time_t *) 0)-then : -1);
}