Last change
on this file since 1997 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:
1.3 KB
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini swapon/swapoff implementation for busybox
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4 | *
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5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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6 | *
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7 | * Licensed under the GPL v2, see the file LICENSE in this tarball.
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8 | */
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9 |
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10 | #include "busybox.h"
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11 | #include <mntent.h>
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12 | #include <dirent.h>
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13 | #include <errno.h>
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14 | #include <string.h>
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15 | #include <sys/swap.h>
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16 |
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17 |
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18 | static int swap_enable_disable(const char *device)
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19 | {
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20 | int status;
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21 | struct stat st;
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22 |
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23 | xstat(device, &st);
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24 |
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25 | /* test for holes */
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26 | if (S_ISREG(st.st_mode))
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27 | if (st.st_blocks * 512 < st.st_size)
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28 | bb_error_msg_and_die("swap file has holes");
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29 |
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30 | if (bb_applet_name[5] == 'n')
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31 | status = swapon(device, 0);
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32 | else
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33 | status = swapoff(device);
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34 |
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35 | if (status != 0) {
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36 | bb_perror_msg("%s", device);
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37 | return 1;
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38 | }
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39 |
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40 | return 0;
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41 | }
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42 |
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43 | static int do_em_all(void)
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44 | {
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45 | struct mntent *m;
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46 | FILE *f;
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47 | int err;
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48 |
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49 | f = setmntent("/etc/fstab", "r");
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50 | if (f == NULL)
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51 | bb_perror_msg_and_die("/etc/fstab");
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52 |
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53 | err = 0;
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54 | while ((m = getmntent(f)) != NULL)
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55 | if (strcmp(m->mnt_type, MNTTYPE_SWAP) == 0)
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56 | err += swap_enable_disable(m->mnt_fsname);
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57 |
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58 | endmntent(f);
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59 |
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60 | return err;
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61 | }
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62 |
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63 | #define DO_ALL 0x01
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64 |
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65 | int swap_on_off_main(int argc, char **argv)
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66 | {
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67 | int ret;
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68 |
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69 | if (argc == 1)
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70 | bb_show_usage();
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71 |
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72 | ret = bb_getopt_ulflags(argc, argv, "a");
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73 | if (ret & DO_ALL)
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74 | return do_em_all();
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75 |
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76 | ret = 0;
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77 | while (*++argv)
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78 | ret += swap_enable_disable(*argv);
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79 | return ret;
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80 | }
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