1 /* 2 * fsetversion.c - Set a file version on an ext2 file system 3 * 4 * Copyright (C) 1993, 1994 Remy Card <card (at) masi.ibp.fr> 5 * Laboratoire MASI, Institut Blaise Pascal 6 * Universite Pierre et Marie Curie (Paris VI) 7 * 8 * %Begin-Header% 9 * This file may be redistributed under the terms of the GNU Library 10 * General Public License, version 2. 11 * %End-Header% 12 */ 13 14 /* 15 * History: 16 * 93/10/30 - Creation 17 */ 18 19 #ifndef _LARGEFILE_SOURCE 20 #define _LARGEFILE_SOURCE 21 #endif 22 #ifndef _LARGEFILE64_SOURCE 23 #define _LARGEFILE64_SOURCE 24 #endif 25 26 #include "config.h" 27 #if HAVE_ERRNO_H 28 #include <errno.h> 29 #endif 30 #if HAVE_UNISTD_H 31 #include <unistd.h> 32 #endif 33 #include <fcntl.h> 34 #include <sys/ioctl.h> 35 36 #include "e2p.h" 37 38 #ifdef O_LARGEFILE 39 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) 40 #else 41 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) 42 #endif 43 44 int fsetversion (const char * name, unsigned long version) 45 { 46 #if HAVE_EXT2_IOCTLS 47 #if !APPLE_DARWIN 48 int fd, r, ver, save_errno = 0; 49 50 fd = open (name, OPEN_FLAGS); 51 if (fd == -1) 52 return -1; 53 ver = (int) version; 54 r = ioctl (fd, EXT2_IOC_SETVERSION, &ver); 55 if (r == -1) 56 save_errno = errno; 57 close (fd); 58 if (save_errno) 59 errno = save_errno; 60 return r; 61 #else 62 int ver = (int)version; 63 return syscall(SYS_fsctl, name, EXT2_IOC_SETVERSION, &ver, 0); 64 #endif 65 #else /* ! HAVE_EXT2_IOCTLS */ 66 extern int errno; 67 errno = EOPNOTSUPP; 68 return -1; 69 #endif /* ! HAVE_EXT2_IOCTLS */ 70 } 71
