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#include "libbb.h"
#include "xmount.h"
#ifdef __linux__
/* xmount and xumount short-circuited to mount and umount2 in xmount.h */
#elif defined(__FreeBSD_kernel__)
static void build_iovec(struct iovec **iov, int *iovlen, const char *name,
void *val, size_t len)
{
int i;
if (*iovlen < 0)
return;
i = *iovlen;
*iov = realloc(*iov, sizeof **iov * (i + 2));
if (*iov == NULL) {
*iovlen = -1;
return;
}
(*iov)[i].iov_base = strdup(name);
(*iov)[i].iov_len = strlen(name) + 1;
i++;
(*iov)[i].iov_base = val;
if (len == (size_t)-1) {
if (val != NULL)
len = strlen(val) + 1;
else
len = 0;
}
(*iov)[i].iov_len = (int)len;
*iovlen = ++i;
}
int FAST_FUNC xmount(const char *source, const char *target,
const char *filesystemtype, unsigned long mountflags,
const void *data UNUSED_PARAM)
{
struct iovec *iov = NULL;
int iovlen = 0;
char *fspath, *from;
int ret;
fspath = realpath(target, NULL);
from = realpath(source, NULL);
build_iovec(&iov, &iovlen, "fstype", (void*)filesystemtype, (size_t)-1);
build_iovec(&iov, &iovlen, "fspath", fspath, (size_t)-1);
if (!strcmp(filesystemtype, "nullfs"))
/* nullfs uses a "target" instead of "from" */
build_iovec(&iov, &iovlen, "target", from, (size_t)-1);
else
build_iovec(&iov, &iovlen, "from", from, (size_t)-1);
ret = nmount(iov, iovlen, mountflags);
free(from);
free(fspath);
return ret;
}
int FAST_FUNC xumount(const char *target, int flags)
{
return unmount(target, flags);
}
int FAST_FUNC xswapon(const char *path, int swapflags UNUSED_PARAM)
{
return swapon(path);
}
int FAST_FUNC xswapoff(const char *path)
{
return swapoff(path);
}
#endif
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