a02aeb236c
Former-commit-id:06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f] Former-commit-id:9f19e3f712
148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
/*
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* Copyright 1995, University Corporation for Atmospheric Research
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* See ../COPYRIGHT file for copying and redistribution conditions.
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*/
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/* $Id: fsStats.c,v 1.11.18.3 2005/06/24 21:05:18 steve Exp $ */
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#include "ldmconfig.h"
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#include "fsStats.h"
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#if __ultrix
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/* ULTRIX 4.4 (MIPS), 4.3 (VAX), blatant kludge */
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#include <sys/param.h>
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#include <sys/mount.h>
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typedef struct fs_data STRUCT_STATFS;
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#if 1
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#define FSTATFS(fd, sbp) (errno = ENOSYS, -1)
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#else
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#define FSTATFS(fd, sbp) (statfs(".", (sbp)))
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#endif
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#define f_blocks fd_btot
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#define f_bavail fd_bfreen
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#endif
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#if __bsdi__ || __bsdi || __FreeBSD__ || (__APPLE__ && __MACH__)
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/* BSDI, ... */
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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typedef struct statfs STRUCT_STATFS;
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#define FSTATFS(fd, sbp) (fstatfs((fd), (sbp)))
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#define f_frsize f_bsize
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#endif
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#if defined(CRAY)
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/* UNICOS */
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#include <sys/statfs.h>
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typedef struct statfs STRUCT_STATFS;
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#define FSTATFS(fd, sbp) (fstatfs((fd), (sbp), (sizeof(struct statfs)), (0)))
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#define f_frsize f_bsize
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#define f_bavail f_bfree
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#endif
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#if (__sun && !__SVR4) || __hpux || __linux
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/* SunOS 4, HPUX, Linux */
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#include <sys/vfs.h>
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typedef struct statfs STRUCT_STATFS;
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#define FSTATFS(fd, sbp) (fstatfs((fd), (sbp)))
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#define f_frsize f_bsize
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/* On HP the f_bavail member seems to be wrong, and f_bfree
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* agrees with others f_bavail... */
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#endif
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#if _SYSTYPE_SVR4 || __SVR4 || _AIX || __osf__ || __sgi
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/* irix 5.3, SunOS 5, AIX, OSF1 */
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#include <sys/statvfs.h>
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typedef struct statvfs STRUCT_STATFS;
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#define FSTATFS(fd, sbp) (fstatvfs((fd), (sbp)))
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#endif
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int
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fsStats(int fd, off_t *fs_szp, off_t *remp)
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{
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STRUCT_STATFS sbuf;
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off_t frsize; /* multiplier */
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if(FSTATFS(fd, &sbuf) == -1)
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{
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return errno;
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}
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/* else */
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#if __ultrix
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frsize = 1024;
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#else
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frsize = sbuf.f_frsize;
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if(frsize <= 0)
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{
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/* f_frsize not supported ? */
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frsize = sbuf.f_bsize;
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}
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#endif
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if(fs_szp != 0)
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*fs_szp = frsize * sbuf.f_blocks;
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if(remp != 0)
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*remp = frsize * sbuf.f_bavail;
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return ENOERR;
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}
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#ifdef TEST_FSSTATS /* test driver */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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static void
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usage(const char *const av0)
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{
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(void)fprintf(stderr, "Usage: %s filename\n",
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av0);
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exit(EXIT_FAILURE);
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}
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main(int ac, char *av[])
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{
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int status = ENOERR;
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int fd;
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const char *const path = av[ac-1];
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off_t total;
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off_t avail;
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if(ac != 2)
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usage(av[0]);
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fd = open(path, O_RDONLY, 0);
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if(fd == -1)
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{
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status = errno;
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(void)fprintf(stderr, "open %s failed: %s\n",
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path, strerror(status));
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exit(EXIT_FAILURE);
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}
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status = fsStats(fd, &total, &avail);
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if(status != ENOERR)
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{
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(void)fprintf(stderr, "fsStats %s failed: %s\n",
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path, strerror(status));
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exit(EXIT_FAILURE);
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}
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printf("File system size: %10ld (%7ld k)\n",
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(long)total, (long)total/1024);
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printf(" space available: %10ld (%7ld k)\n",
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(long)avail, (long)avail/1024);
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exit(EXIT_SUCCESS);
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}
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#endif /* TEST_FSSTATS */
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