/* vi: set sw=4 ts=4: */ /* * Utility routines. * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <stdio.h> #include <mntent.h> #include "libbb.h" #define MTAB_MAX_ENTRIES 40 #ifdef CONFIG_FEATURE_MTAB_SUPPORT void erase_mtab(const char *name) { struct mntent entries[MTAB_MAX_ENTRIES]; int count = 0; FILE *mountTable = setmntent(bb_path_mtab_file, "r"); struct mntent *m; /* Check if reading the mtab file failed */ if (mountTable == 0 /* Bummer. fall back on trying the /proc filesystem */ && (mountTable = setmntent("/proc/mounts", "r")) == 0) { bb_perror_msg(bb_path_mtab_file); return; } while (((m = getmntent(mountTable)) != 0) && (count < MTAB_MAX_ENTRIES)) { entries[count].mnt_fsname = strdup(m->mnt_fsname); entries[count].mnt_dir = strdup(m->mnt_dir); entries[count].mnt_type = strdup(m->mnt_type); entries[count].mnt_opts = strdup(m->mnt_opts); entries[count].mnt_freq = m->mnt_freq; entries[count].mnt_passno = m->mnt_passno; count++; } endmntent(mountTable); if ((mountTable = setmntent(bb_path_mtab_file, "w"))) { int i; for (i = 0; i < count; i++) { int result = (strcmp(entries[i].mnt_fsname, name) == 0 || strcmp(entries[i].mnt_dir, name) == 0); if (result) continue; else addmntent(mountTable, &entries[i]); } endmntent(mountTable); } else if (errno != EROFS) bb_perror_msg(bb_path_mtab_file); } #endif