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/*
* fsetflags.c - Set 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"
/*
* Deal with lame glibc's that define this function without actually
* implementing it. Can you say "attractive nuisance", boys and girls?
* I knew you could!
*/
#ifdef __linux__
#undef HAVE_CHFLAGS
#endif
#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 fsetflags (const char * name, unsigned long flags)
{
#if HAVE_CHFLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS)
unsigned long bsd_flags = 0;
#ifdef UF_IMMUTABLE
if (flags & EXT2_IMMUTABLE_FL)
bsd_flags |= UF_IMMUTABLE;
#endif
#ifdef UF_APPEND
if (flags & EXT2_APPEND_FL)
bsd_flags |= UF_APPEND;
#endif
#ifdef UF_NODUMP
if (flags & EXT2_NODUMP_FL)
bsd_flags |= UF_NODUMP;
#endif
return chflags (name, bsd_flags);
#elif APPLE_DARWIN && HAVE_EXT2_IOCTLS
int f = (int) flags;
return syscall(SYS_fsctl, name, EXT2_IOC_SETFLAGS, &f, 0);
#elif HAVE_EXT2_IOCTLS
struct stat buf;
int fd, r, f, save_errno = 0;
if (!stat(name, &buf) &&
!S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
errno = EOPNOTSUPP;
return -1;
}
fd = open(name, OPEN_FLAGS);
if (fd == -1) {
if (errno == ELOOP || errno == ENXIO)
errno = EOPNOTSUPP;
return -1;
}
if (!fstat(fd, &buf) &&
!S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) {
close(fd);
errno = EOPNOTSUPP;
return -1;
}
f = (int) flags;
r = ioctl(fd, EXT2_IOC_SETFLAGS, &f);
if (r == -1) {
if (errno == ENOTTY)
errno = EOPNOTSUPP;
save_errno = errno;
}
close(fd);
if (save_errno)
errno = save_errno;
return r;
#else
errno = EOPNOTSUPP;
return -1;
#endif
}
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