patch by Tito which unifies common get/set functions into 1 get/set function and cuts down on the size used significantly :)
This commit is contained in:
69
e2fsprogs/e2p/fgetsetversion.c
Normal file
69
e2fsprogs/e2p/fgetsetversion.c
Normal file
@@ -0,0 +1,69 @@
|
||||
/*
|
||||
* fgetversion.c - Get a file version on an ext2 file system
|
||||
* fsetversion.c - Set a file version 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
|
||||
*/
|
||||
|
||||
#if HAVE_ERRNO_H
|
||||
#include <errno.h>
|
||||
#endif
|
||||
#if HAVE_UNISTD_H
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
#include <fcntl.h>
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
#include "e2p.h"
|
||||
|
||||
#ifdef O_LARGEFILE
|
||||
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
|
||||
#else
|
||||
#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
|
||||
#endif
|
||||
|
||||
/*
|
||||
To do fsetversion: unsigned long *ptr_version must be set to NULL.
|
||||
and unsigned long version must be set to a value
|
||||
To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
|
||||
and unsigned long version is ignored.
|
||||
TITO.
|
||||
*/
|
||||
|
||||
int fgetsetversion (const char * name, unsigned long * get_version, unsigned long set_version)
|
||||
{
|
||||
#if HAVE_EXT2_IOCTLS
|
||||
int fd, r, ver, save_errno = 0;
|
||||
|
||||
fd = open (name, OPEN_FLAGS);
|
||||
if (fd == -1)
|
||||
return -1;
|
||||
if (!get_version) {
|
||||
ver = (int) set_version;
|
||||
r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
|
||||
} else {
|
||||
r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
|
||||
*get_version = ver;
|
||||
}
|
||||
if (r == -1)
|
||||
save_errno = errno;
|
||||
close (fd);
|
||||
if (save_errno)
|
||||
errno = save_errno;
|
||||
return r;
|
||||
#else /* ! HAVE_EXT2_IOCTLS */
|
||||
errno = EOPNOTSUPP;
|
||||
return -1;
|
||||
#endif /* ! HAVE_EXT2_IOCTLS */
|
||||
}
|
Reference in New Issue
Block a user