Last change
on this file since 845 was 821, checked in by Bruno Cornec, 18 years ago |
Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)
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File size:
1.6 KB
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1 | /*
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2 | * fgetversion.c - Get a file version on an ext2 file system
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3 | * fsetversion.c - Set a file version on an ext2 file system
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4 | *
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5 | *
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6 | * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
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7 | * Laboratoire MASI, Institut Blaise Pascal
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8 | * Universite Pierre et Marie Curie (Paris VI)
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9 | *
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10 | * This file can be redistributed under the terms of the GNU Library General
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11 | * Public License
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12 | */
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13 |
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14 | /*
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15 | * History:
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16 | * 93/10/30 - Creation
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17 | */
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18 |
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19 | #if HAVE_ERRNO_H
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20 | #include <errno.h>
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21 | #endif
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22 | #if HAVE_UNISTD_H
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23 | #include <unistd.h>
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24 | #endif
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25 | #include <fcntl.h>
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26 | #include <sys/ioctl.h>
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27 |
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28 | #include "e2p.h"
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29 |
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30 | #ifdef O_LARGEFILE
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31 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
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32 | #else
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33 | #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
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34 | #endif
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35 |
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36 | /*
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37 | To do fsetversion: unsigned long *ptr_version must be set to NULL.
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38 | and unsigned long version must be set to a value
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39 | To do fgetversion: unsigned long *ptr_version must NOT be set to NULL
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40 | and unsigned long version is ignored.
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41 | TITO.
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42 | */
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43 |
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44 | int fgetsetversion (const char * name, unsigned long * get_version, unsigned long set_version)
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45 | {
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46 | #if HAVE_EXT2_IOCTLS
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47 | int fd, r, ver, save_errno = 0;
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48 |
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49 | fd = open (name, OPEN_FLAGS);
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50 | if (fd == -1)
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51 | return -1;
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52 | if (!get_version) {
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53 | ver = (int) set_version;
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54 | r = ioctl (fd, EXT2_IOC_SETVERSION, &ver);
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55 | } else {
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56 | r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
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57 | *get_version = ver;
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58 | }
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59 | if (r == -1)
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60 | save_errno = errno;
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61 | close (fd);
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62 | if (save_errno)
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63 | errno = save_errno;
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64 | return r;
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65 | #else /* ! HAVE_EXT2_IOCTLS */
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66 | errno = EOPNOTSUPP;
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67 | return -1;
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68 | #endif /* ! HAVE_EXT2_IOCTLS */
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69 | }
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