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annotate lib/getmountlist.c @ 882:ae7a0fd5363f

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Remove leaked global path_mounts.
author Rob Landley <rob@landley.net>
date Fri, 26 Apr 2013 01:59:13 -0500
parents 8eb26e828756
children 849e14fecf2b
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fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
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1 /* getmountlist.c - Get a linked list of mount points, with stat information.
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2 *
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3 * Copyright 2006 Rob Landley <rob@landley.net>
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4 */
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6 #include "toys.h"
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7
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8 #include <mntent.h>
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9
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10 // Get a list of mount points from /etc/mtab or /proc/mounts, including
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11 // statvfs() information. This returns a reversed list, which is good for
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12 // finding overmounts and such.
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13
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14 struct mtab_list *getmountlist(int die)
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15 {
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16 FILE *fp;
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17 struct mtab_list *mtlist, *mt;
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18 struct mntent me;
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ae7a0fd5363f Remove leaked global path_mounts.
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19 char evilbuf[2*PATH_MAX], *path_mounts = "/proc/mounts";
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20
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21 mtlist = 0;
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22 if (!(fp = setmntent(path_mounts, "r"))) {
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23 if (die) error_exit("cannot open %s", path_mounts);
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24 } else {
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25 while (getmntent_r(fp, &me, evilbuf, sizeof(evilbuf))) {
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26 mt = xzalloc(sizeof(struct mtab_list) + strlen(me.mnt_fsname) +
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27 strlen(me.mnt_dir) + strlen(me.mnt_type) + 3);
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28 mt->next = mtlist;
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29 // Get information about this filesystem. Yes, we need both.
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30 stat(me.mnt_dir, &(mt->stat));
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31 statvfs(me.mnt_dir, &(mt->statvfs));
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32 // Remember information from /proc/mounts
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33 mt->dir = stpcpy(mt->type, me.mnt_type) + 1;
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34 mt->device = stpcpy(mt->dir, me.mnt_dir) + 1;
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35 strcpy(mt->device, me.mnt_fsname);
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36 mtlist = mt;
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37 }
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38 }
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39 endmntent(fp);
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40 return mtlist;
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41 }