106 lines
2.0 KiB
C
106 lines
2.0 KiB
C
/*
|
|
* fgetflags.c - Get a file flags on an ext2 file system
|
|
*
|
|
* Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
|
|
* Laboratoire MASI, Institut Blaise Pascal
|
|
* Universite Pierre et Marie Curie (Paris VI)
|
|
*
|
|
* %Begin-Header%
|
|
* This file may be redistributed under the terms of the GNU Library
|
|
* General Public License, version 2.
|
|
* %End-Header%
|
|
*/
|
|
|
|
/*
|
|
* History:
|
|
* 93/10/30 - Creation
|
|
*/
|
|
|
|
#ifndef _LARGEFILE_SOURCE
|
|
#define _LARGEFILE_SOURCE
|
|
#endif
|
|
#ifndef _LARGEFILE64_SOURCE
|
|
#define _LARGEFILE64_SOURCE
|
|
#endif
|
|
|
|
#include "config.h"
|
|
#if HAVE_ERRNO_H
|
|
#include <errno.h>
|
|
#endif
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#if HAVE_EXT2_IOCTLS
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#endif
|
|
|
|
#include "e2p.h"
|
|
|
|
#ifndef O_LARGEFILE
|
|
#define O_LARGEFILE 0
|
|
#endif
|
|
#ifndef O_NOFOLLOW
|
|
#define O_NOFOLLOW 0
|
|
#endif
|
|
|
|
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW)
|
|
|
|
int fgetflags (const char * name, unsigned long * flags)
|
|
{
|
|
#if HAVE_STAT_FLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS)
|
|
struct stat buf;
|
|
|
|
if (stat (name, &buf) == -1)
|
|
return -1;
|
|
|
|
*flags = 0;
|
|
#ifdef UF_IMMUTABLE
|
|
if (buf.st_flags & UF_IMMUTABLE)
|
|
*flags |= EXT2_IMMUTABLE_FL;
|
|
#endif
|
|
#ifdef UF_APPEND
|
|
if (buf.st_flags & UF_APPEND)
|
|
*flags |= EXT2_APPEND_FL;
|
|
#endif
|
|
#ifdef UF_NODUMP
|
|
if (buf.st_flags & UF_NODUMP)
|
|
*flags |= EXT2_NODUMP_FL;
|
|
#endif
|
|
|
|
return 0;
|
|
#elif APPLE_DARWIN && HAVE_EXT2_IOCTLS
|
|
int f, save_errno = 0;
|
|
|
|
f = -1;
|
|
save_errno = syscall(SYS_fsctl, name, EXT2_IOC_GETFLAGS, &f, 0);
|
|
*flags = f;
|
|
return (save_errno);
|
|
#elif HAVE_EXT2_IOCTLS
|
|
int fd, r, f, save_errno = 0;
|
|
|
|
fd = open(name, OPEN_FLAGS);
|
|
if (fd == -1) {
|
|
if (errno == ELOOP || errno == ENXIO)
|
|
errno = EOPNOTSUPP;
|
|
return -1;
|
|
}
|
|
r = ioctl(fd, EXT2_IOC_GETFLAGS, &f);
|
|
if (r == -1) {
|
|
if (errno == ENOTTY)
|
|
errno = EOPNOTSUPP;
|
|
save_errno = errno;
|
|
}
|
|
*flags = f;
|
|
close(fd);
|
|
if (save_errno)
|
|
errno = save_errno;
|
|
return r;
|
|
#else
|
|
errno = EOPNOTSUPP;
|
|
return -1;
|
|
#endif
|
|
}
|