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author | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
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committer | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
commit | 008d0be72b2f160382c6e880765e96b64a050c65 (patch) | |
tree | 36f48a98a3815a408e2ce1693dd182af90f80305 /release/src/router/busybox/libbb/find_mount_point.c | |
parent | 611becfb8726c60cb060368541ad98191d4532f5 (diff) | |
download | tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.gz tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.bz2 |
imported original firmware WRT54GL_v4.30.11_11_US
Diffstat (limited to 'release/src/router/busybox/libbb/find_mount_point.c')
-rw-r--r-- | release/src/router/busybox/libbb/find_mount_point.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/find_mount_point.c b/release/src/router/busybox/libbb/find_mount_point.c new file mode 100644 index 00000000..2d9481a6 --- /dev/null +++ b/release/src/router/busybox/libbb/find_mount_point.c @@ -0,0 +1,81 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) tons of folks. Tracking down who wrote what + * isn't something I'm going to worry about... If you wrote something + * here, please feel free to acknowledge your work. + * + * 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 + * + * Based in part on code from sash, Copyright (c) 1999 by David I. Bell + * Permission has been granted to redistribute this code under the GPL. + * + */ + +#include <stdio.h> +#include <string.h> +#include "libbb.h" + + +#include <mntent.h> +/* + * Given a block device, find the mount table entry if that block device + * is mounted. + * + * Given any other file (or directory), find the mount table entry for its + * filesystem. + */ +extern struct mntent *find_mount_point(const char *name, const char *table) +{ + struct stat s; + dev_t mountDevice; + FILE *mountTable; + struct mntent *mountEntry; + + if (stat(name, &s) != 0) + return 0; + + if ((s.st_mode & S_IFMT) == S_IFBLK) + mountDevice = s.st_rdev; + else + mountDevice = s.st_dev; + + + if ((mountTable = setmntent(table, "r")) == 0) + return 0; + + while ((mountEntry = getmntent(mountTable)) != 0) { + if (strcmp(name, mountEntry->mnt_dir) == 0 + || strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */ + break; + if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */ + break; + if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */ + break; + } + endmntent(mountTable); + return mountEntry; +} + + +/* END CODE */ +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/ |