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/* vi: set sw=4 ts=4: */
/*
* fgetflags.c - Get a file flags on an ext2 file system
* 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)
*
* This file can be redistributed under the terms of the GNU Library General
* Public License
*/
/*
* History:
* 93/10/30 - Creation
*/
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_EXT2_IOCTLS
#include <fcntl.h>
#include <sys/ioctl.h>
#endif
#include "e2p.h"
#ifdef O_LARGEFILE
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
#else
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
#endif
int fgetsetflags (const char * name, unsigned long * get_flags, unsigned long set_flags)
{
#ifdef 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)) {
goto notsupp;
}
fd = open (name, OPEN_FLAGS);
if (fd == -1)
return -1;
if (!get_flags) {
f = (int) set_flags;
r = ioctl (fd, EXT2_IOC_SETFLAGS, &f);
} else {
r = ioctl (fd, EXT2_IOC_GETFLAGS, &f);
*get_flags = f;
}
if (r == -1)
save_errno = errno;
close (fd);
if (save_errno)
errno = save_errno;
return r;
notsupp:
#endif /* HAVE_EXT2_IOCTLS */
errno = EOPNOTSUPP;
return -1;
}
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