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/* getmountlist.c - Get a linked list of mount points, with stat information.
*
* Copyright 2006 Rob Landley <rob@landley.net>
*/
#include "toys.h"
#include <mntent.h>
// Get a list of mount points from /etc/mtab or /proc/mounts, including
// statvfs() information. This returns a reversed list, which is good for
// finding overmounts and such.
struct mtab_list *getmountlist(int die)
{
FILE *fp;
struct mtab_list *mtlist, *mt;
struct mntent me;
char evilbuf[2*PATH_MAX], *path_mounts = "/proc/mounts";
mtlist = 0;
if (!(fp = setmntent(path_mounts, "r"))) {
if (die) error_exit("cannot open %s", path_mounts);
} else {
while (getmntent_r(fp, &me, evilbuf, sizeof(evilbuf))) {
mt = xzalloc(sizeof(struct mtab_list) + strlen(me.mnt_fsname) +
strlen(me.mnt_dir) + strlen(me.mnt_type) + 3);
mt->next = mtlist;
// Get information about this filesystem. Yes, we need both.
stat(me.mnt_dir, &(mt->stat));
statvfs(me.mnt_dir, &(mt->statvfs));
// Remember information from /proc/mounts
mt->dir = stpcpy(mt->type, me.mnt_type) + 1;
mt->device = stpcpy(mt->dir, me.mnt_dir) + 1;
strcpy(mt->device, me.mnt_fsname);
mtlist = mt;
}
}
endmntent(fp);
return mtlist;
}
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