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#include <mntent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cowbuilder_util.h"
/**
* @return 0 if not mounted, 1 if something under the mountpoint is mounted.
*/
int check_mountpoint(const char* mountpoint) {
/* Check if a subdirectory under buildplace is still mounted, which may happen when there's a stale bind mount or whatnot. */
FILE *mtab = NULL;
struct mntent * part = NULL;
if ((mtab = setmntent("/etc/mtab", "r")) != NULL)
{
while ((part = getmntent(mtab) ) != NULL)
{
if ( part->mnt_fsname != NULL )
{
if (strstr(part->mnt_dir, mountpoint) == part->mnt_dir)
{
printf("E: Something (%s) is still mounted under %s; unmount and remove %s manually\n",
part->mnt_dir, mountpoint, mountpoint);
endmntent(mtab);
return 1;
}
}
}
endmntent(mtab);
}
return 0;
}
/**
* Remove double slash "//" from pc->buildplace and use "/"
* dest needs to be large enough to hold buildplace string.
*/
void canonicalize_doubleslash(const char* buildplace,
char* dest) {
char prev=0;
int i, j;
for (i = 0, j = 0; buildplace[i]; ++i)
{
if (prev == '/' && buildplace[i] == '/')
{
continue;
}
prev = dest[j++] = buildplace[i];
}
dest[j] = '\0';
}
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