mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
#include "busybox.h"
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <mntent.h>
|
|
#include <fstab.h>
|
|
#include <sys/mount.h>
|
|
|
|
extern const char mtab_file[]; /* Defined in utility.c */
|
|
|
|
|
|
void erase_mtab(const char *name)
|
|
{
|
|
struct mntent entries[20];
|
|
int count = 0;
|
|
FILE *mountTable = setmntent(mtab_file, "r");
|
|
struct mntent *m;
|
|
|
|
/* Check if reading the mtab file failed */
|
|
if (mountTable == 0
|
|
#if ! defined BB_FEATURE_USE_PROCFS
|
|
) {
|
|
#else
|
|
/* Bummer. fall back on trying the /proc filesystem */
|
|
&& (mountTable = setmntent("/proc/mounts", "r")) == 0) {
|
|
#endif
|
|
perror(mtab_file);
|
|
return;
|
|
}
|
|
|
|
while ((m = getmntent(mountTable)) != 0) {
|
|
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(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)
|
|
perror(mtab_file);
|
|
}
|
|
|
|
void write_mtab(char *blockDevice, char *directory,
|
|
char *filesystemType, long flags, char *string_flags)
|
|
{
|
|
FILE *mountTable = setmntent(mtab_file, "a+");
|
|
struct mntent m;
|
|
|
|
if (mountTable == 0) {
|
|
perror(mtab_file);
|
|
return;
|
|
}
|
|
if (mountTable) {
|
|
int length = strlen(directory);
|
|
|
|
if (length > 1 && directory[length - 1] == '/')
|
|
directory[length - 1] = '\0';
|
|
|
|
#ifdef BB_FEATURE_USE_PROCFS
|
|
if (filesystemType == 0) {
|
|
struct mntent *p = findMountPoint(blockDevice, "/proc/mounts");
|
|
|
|
if (p && p->mnt_type)
|
|
filesystemType = p->mnt_type;
|
|
}
|
|
#endif
|
|
m.mnt_fsname = blockDevice;
|
|
m.mnt_dir = directory;
|
|
m.mnt_type = filesystemType ? filesystemType : "default";
|
|
|
|
if (*string_flags) {
|
|
m.mnt_opts = string_flags;
|
|
} else {
|
|
if ((flags | MS_RDONLY) == flags)
|
|
m.mnt_opts = "ro";
|
|
else
|
|
m.mnt_opts = "rw";
|
|
}
|
|
|
|
m.mnt_freq = 0;
|
|
m.mnt_passno = 0;
|
|
addmntent(mountTable, &m);
|
|
endmntent(mountTable);
|
|
}
|
|
}
|